Acer 752 Laptop User Manual

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Acer 752 Laptop User Manual | Manualzz

G

Y

040-420

Contrc

with h

_.- - v----w

I

CONTENTS

P a g e

GENERAL . . . . . . , . . . . , . , . . . , . , . . . . , . , . . . . . . . . 2

MAJOR SYSTEM COMPONENTS . . . . . . . . . . . . 2-4

Processor Module . . . . . . . . . . . . . . . . . . . . . . . . ...2

Low-Voltage Relay Module . , . . . . . . , . , . , , . . . . . 2

Electronic Expansion Valve Module . . . . . . . . . . . 2

Options Module . . . . . . . . . . . . . . . . *. . . . . . . . . . . . 2

Keypad and Display Module

(Also Called HSIO or LID) . . . . . . . . . . . . . . . . . . 2

Page

Restart Procedure . . . . . . . . . . . . . . . . . . . . . . . ...48

l

POWER FAILURE EXTERNAL TO THE UNIT

Alarm Codes . . . . . . , . . . . . . . , . . . . . . . . . . , . . . . . 49

+. . . . . . . . . . . . 50

Electronic Expansion Valve . . . . . . . . . . . . . . . . , . 56

l

EXV OPERATION l

CHECKOUT PROCEDURE

Thermistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...60

a LOCATION l

THERMISTOR REPLACEMENT (Tl, T2, T7, T8)

(Compressor and Cooler)

Electronic Expansion Valve (EXV) . . . , . . . . . . . . 4

Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4

Compressor Protection Control

Module (CPCS) . . , . . . . . . . . . . . . . . . . . . . . . . . . . 4

Capacity Control . . . . , , . . . . . . . . . . . . . . . . . . +

Head Pressure Control . . 1

Pumpout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...27

Keypad and Display Module

(Also Called HSIO or LID)

ACCESSING FUNCTIONS AND :tiBFtiN?TI’dNS

28

SUMMARY DISPLAY

KEYPAD OPERATING INSTRUCTIONS

STATUS FUNCTION

TEST FUNCTION

HISTORY FUNCTION

SET POINT FUNCTION

SERVICE FUNCTION

SCHEDULE FUNCTION l

TROUBLESHOOTING l

TRANSDUCER REPLACEMENT

Control Modules . . . . . . . . . . . . . . . . . . . . . . . , . . . . 64

l

PROCESSOR MODULE (PSIO), 4IN/40UT

MODULE (SIO), LOW-VOLTAGE RELAY

MODULE (DSIO), AND EXV DRIVER MODULE

(DSIO)

. RED LED l l

GREEN LED

PROCESSOR MODULE (PSIO) l LOW-VOLTAGE RELAY MODULE (DSIO)

. 4IN/40UT MODULE (SIO)

ACCESSORY UNLOADER INSTALLATION

Installation . . . . . . . , . . . s

l

040-110, 130 (60 Hz) UNITS

(and associated modular units) l

130 (50 Hz), 150-210, 225, 250, and 280 UNITS

(and associated modular units)

68-7 1

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . .

48-67

Checking Display Codes . . . . . . . . . . . . . . . . . . . . .

48

Unit Shutoff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

48

Complete Unit Stoppage . . . . . . . . . . . . . . . . . . . .

48

Single Circuit Stoppage . . . . . . . . . . . . . . . . . . . . .

48

Lag Compressor Stoppage . . . . . . . . . . . . . . . . . .

48

FIELD WIRING . . . . . . . . . . . . , . . . . . . . . . . . . . . . 71-73

REPLACING DEFECTIVE PROCESSOR

MODULE (PSIO)

. . . . +

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...73

SAFETY CONSIDERATIONS

Installing, starting up, and servicing this equipment can be hazardous due to system pressures, electrical components, and equipment location (roof, elevated structures, etc.).

Only trained, qualified installers and service mechanics should install, start-up, and service this equipment.

When working on this equipment, observe precautions in the literature, and on tags, stickers, and labels attached to the equipment, and any other safety precautions that apply.

Follow all safety codes. Wear safety glasses and work gloves.

Use care in handling, rigging, and setting this equipment, and in handling all electrical components.

Electrical shock can cause personal injury and death.

Shut off all power to this equipment during installation and service. There may be more than one disconnect switch. Tag all disconnect locations to alert others not

This unit uses a microprocessor-based electronic control system. Do not use jumpers or other tools

to

short out components, or to bypass or otherwise depart from recommended procedures. Any short-to-ground of the control board or accompanying wiring may destroy the electronic modules or electrical components.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book 2

P C 9 0 3

Catalog No. 563-015 Printed in U S A.

Form 30GN-2T pg 1

1 - 9 4 Replaces: 30GB,GT-1

30GN-1T

T ,

-%a-

GENERAL

IMPORTANT: This publication contains controls, operation and troubleshooting data for 3OGNO40-420 and

30GT225, 250, and 280 FlotronicTM II chillers,

Circuits are identified as circuits A and B, and compressors are identified as Al, A2, etc. in circuit A, and BI, B2, etc. in circuit B.

Use this guide in conjunction with separate Installation Instructions booklet packaged with the unit,

The 30G Series standard Flotronic II chillers feature microprocessor-based electronic controls and an electronic expansion valve (EXV) in each refrigeration circuit.

NOTE: The 30GN040 and 045 chillers with a factoryinstalled brine option have thermal expansion valves (TXV) instead of the EXV.

Unit sizes 240,270, and 300-420 are modular units which are shipped as separate sections (modules A and B). Installation instructions specific to these units are shipped inside the individual modules. See Table 1 for a listing of unit sizes and modular combinations. For modules 24OB and 270B, follow all general instructions as noted for unit sizes OSO-

110. For all remaining modules, follow instructions for unit sizes 130-210.

Table 1 - Unit Sizes and Modular Combinations

UNIT MODEL

30G NO40

3OG NO45

30GN050

30EN060

30GN070

30GN080

NoT”o’NNs”L SE\WlK&N

6 0

70

8 0

40

4 5

50

-

-

-

-

ssE%~N

-

-

-

-

30GNlfO

30GN190

30GN210 1

30GT225

30GN240

30GT250

30GN270

30GT280

30GN330

30GN360

30GN390

30GN420

1

1 285

3 2 5

3 5 0

3 8 0

400

160

180

200 I

2 2 5

2 2 5

2 5 0

260

2 8 0

-

-

-

-

30GN130

-

1

30QN170

-

I

-

-

-

30GNlOO

-

30GNi 00

I

1 30GNi 3 0 1

30GNl70

3 0 G N f 70

30GN170

30GN190 3 0 G N f 90/30GN170*

30GN210

30GN210

30GN190

30GN210

*60 Hz units/50 Hz units.

The Flotronic II control

system

cycles compressor unloaders and/or compressors to maintain the selected leaving water temperature set point. It automatically positions the

EXV to maintain the specified refrigerant superheat entering the compressor cylinders. It also cycles condenser fans on and off to maintain suitable head pressure for each circuit. Safeties are continuously monitored to prevent the unit from operating under unsafe conditions. A scheduling function, programmed by the user, controls the unit occupied/ unoccupied schedule. The control also operates a test program that allows the operator to check output signals and ensure components are operable.

2

The contrwsm consists of a processor module (PSIO)9 a low-voltage relay module (DSIO-LV),

2

EXVs, an EXV driver module (DSIO-EXV), a 6-pack relay board, a keypad and display module (also called HSIO or LID), thermistors, and transducers to provide inputs to the microprocessor. An options module (SIO) is used to provide additional functions. This module is standard on 30GN modules and is a field-installed accessory on the 30GT Flotronic II units. See Fig. 1.

MAJOR SYSTEM COMPONENTS

Processor Module -

This module contains the operating software and controls the operation of the machine. It continuously monitors information received from the various transducers and thermistors and communicates with the relay modules and &pack relay board to increase or decrease the active stages of capacity. The processor module also controls the EXV driver module, commanding it to open or close each EXV in order to maintain the proper superheat entering the cylinders of each lead compressor. Information is transmitted between the processor module and relay module, the EXV driver module, and the keypad and display module through a 3-wire communications bus. When used, the options module is also connected to the communications bus.

For the Flotronic II chillers, the processor monitors system pressure by means of 6 transducers, 3 in each lead compressor. Compressor suction pressure, discharge pressure, and oil pressure are sensed. If the processor senses high discharge pressure or low suction pressure, it immediately shuts down all compressors in the affected circuit. During operation, if low oil pressure is sensed for longer than one minute, all compressors in the affected circuit are shut down.

At start-up, the coil pressure signal is ignored for 2 minutes. If shutdown occurs due to any of these pressure faults, the circuit is locked out and the appropriate fault code is displayed.

Low-Voltage Relay Module

- This module closes contacts to energize compressor unloaders and/or compressors. It also senses the status of the safeties for all compressors and transmits this information to the processor.

Electronic Expansion Valve Module

- This module receives signals from the processor and operates the electronic expansion valves.

Options Module -

This module allows the use of Flotronic II features such as dual set point, remote reset, demand limit, hot gas bypass, and accessory unloaders. The options module also aIlows for reset and demand limit to be activated from a remote 4-20 mA signal. The options module is installed at the factory on 040-210 and modular 240-

420 units. It is a field-installed accessory for 225, 250 and

280 units.

Keypad and Display Module (also called HSlO or LID) -

This device consists of a keypad with 6 function keys, 5 operative keys, 12 numeric keys, and an alphanumeric g-character LCD. Key usage is explained in

Accessing Functions and Subfunctions section on page 28.

Control Switch -

Control of the chiller is defined by the position of the LOCAL/ENABLE-STOP-CCN switch.

This is a 3-position manual switch that allows the chiller to be put under the control of its own Flotronic II controls, manually stopped, or put under the control of a Carrier Corn:f

,, fort Network (CCN), Switch allows unit operation as shown in Table 2.

c ’ _. ’

ELECTRONIC EXPANSION VALVES

DRIVER MODULE

(DSIO EXV)

L O W - V O L T A G E

R E L A Y M O D U L E

(DsroiLv)

T B - 7

I d g-PACK

RELAY BOARD

B

;rt’EFUCER

SOURCE (PSI)

\- -.-...-

GROUND FAULT INTERRUPTER

KEYPAD;DISPLAY

M O D U L E (HSIO/LID)

208/230-, 460-f%!-3-60-V O N L Y

LEGEND

CCN - cZarrier Comfort Network

TB

-1 “ e r m i n a l B l o c k

Fig. 1 - 30GN Control Panel (040-110, 240B, 270B Unit Shown)

C O O L E R I iEA1

RELAY, B

‘ E R

, T B - 3

FIELD

ZEol

CONNECl rlON

In the LOCAL/ENABLE position, the chiller is under local control and responds to the scheduling configuration and set point data input at its own local interface device (keypad and display module).

In the CCN position, the chiller is under remote control and responds only to CCN network commands. The occupied/ unoccupied conditions are defined by the network. All keypad and display functions can be read at the chiller regardless of position of the switch.

CCN run or

stop

condition is established by a command from the CCN network. It is not possible to force outputs from the CCN network, except that an emergency stop command shuts down the chiller immediately and causes ‘ ‘ALARM

52” to be displayed.

Table 2 - LOCAL/ENABLE-STOP-CCN

Switch Positions and Operation

S W I T C H

P O S I T I O N

STOP

LOCAL/ENABLE

CCN :t2 1

I

U N I T

OPERATION

CONFIGURATION AND

SET POINT CONTROL

Keypad Control 1 CCN Control

I Unit Cannot Run Read/Write

Unit Can Run

1 Read Only

Read/Limited Write Read Only

Unit Cannot Run Read Only

Unit Can Run R e a d O n l v

ReadlWrite

Read/Limited Write

Electronic Expansion Valve (EXV)

- The microprocessor controls the EXV through the EXV driver module. Inside the expansion valve is a linear actuator stepper motor.

The lead compressor in each circuit has a thermistor and a pressure transducer located in the suction manifold after the compressor motor. The thermistor measures the temperature of the superheated gas entering the compressor cylinders. The pressure transducer measures the refrigerant pressure in the suction manifold. The microprocessor converts the pressure reading to a saturated temperature. The difference between the temperature of the superheated gas and the saturation temperature is the superheat. The microprocessor controls the position of the electronic expansion valve stepper motor to maintain 29 F (16 C) superheat.

At initial unit start-up, the EXV position is at zero. After that, the microprocessor keeps accurate track of the valve position in order to use this information as input for the other control functions. The control monitors the superheat and the rate of change of superheat to control the position of the valve. The valve stroke is very large, which results in very accurate control of the superheat.

Sensors -

The Flotronic TM II chiller control system gathers information from sensors to control the operation of the chiller. The units use

6 standard pressure transducers and

4 standard thermistors to monitor system pressures and temperatures at various points within the chiller. Sensors are listed in Table 3.

Table 3 - Thermistor and Transducer Locations

Sensor

T:

Ti

TIO

Sensor

D P T - A

S P T - A

O P T - A

DPT-I3

S P T - B

O P T - B

THERMISTORS

Location

Cooler Leaving Water Temp

Cooler Entering Water Temp

Compressor Suction Gas Temp Circuit A

Compressor Suction Gas Temp Circuit B

Remote Temperature Sensor (Accessory)

PFIESSURETRANSDUCERS

Location

Compressor Al Discharge Pressure

Compressor Al Suction-Pressure

Compressor Al Oil Pressure

Compressor Bl Discharge Pressure

Compressor Bi Suction Pressure

Compressor Bl Oil Pressure

Compressor Protection Control Module (CPCS)

- Each compressor on models 30GN070 (50 Hz), 080-

100, and 240B, 270B, has its own CPCS as standard equipment. All 30GN040-060 and 070 (60 Hz) units feature the

CPCS as an accessory, and CR (control relay) as standard equipment. See Fig. 2. The 30GN130-2 10 and associated modular units and the 30GT225, 250, and 280 Flotronic II units have a CR as standard equipment. The CPCS or CR is used to control and protect the compressors and crankcase heaters. The CPCS provides the following functions: compressor contactor control crankcase heater control compressor ground current protection status communication to processor board high-pressure protection

The CR provides all of the same functions as the CPCS with the exception of compressor ground current protection. Ground current protection is accomplished by using a

CGF (compressor ground fault) board in conjunction with the CR. The CGF provides the same ground fault function as the CPCS for units where the CPCS is not utilized.

One large relay is located on the CPCS board. This relay

(or CR) controls the crankcase heater and compressor contactor. The CPCS also provides a set of signal contacts that the microprocessor monitors to determine the operating status of the compressor. If the processor board determines that the compressor is not operating properly through the signal contacts, it will lock the compressor off by deenergizing the proper 24-v control relay on the relay board. The

CPCS board contains logic that can detect if the current-toground of any compressor winding exceeds 2.5 amps. If this condition occurs, the CPCS module shuts down the compressor.

A high-pressure switch with a trip pressure of 426 +

7 psig (2936 +_ 48 kPa), is wired in series with the CPCS.

If this switch opens during operation, the compressor stops and the failure is detected by the processor when the signal contacts open. The compressor is locked off. If the lead compressor in either circuit is shut down by the high pressure switch or ground current protector, all compressors in the circuit are locked off.

PROTECTION BOARD

Fig. 2 - Compressor Protection Control Module

4

OPERATION DATA

Capacity Control

- The control system cycles compressor to give capacity control steps as shown in

Tables 4A-4D. The unit controls leaving chilled water temperature. Entering water temperature is used by the microprocessor in determining the optimum time to add or subtract steps of capacity, but is not a control set point.

The chilled water temperature set point can be automatically reset by the return temperature reset or space and outdoor air temperature reset features. It can also be reset from an external 4-20 mA signal with a loop isolator, or from a network signal.

The operating sequences shown are some of many possible loading sequences for the control of the leaving water temperature. If a circuit has more unloaders than another, that circuit will always be the lead circuit.

UNIT

3 0 G N

“““ft Hr) y-yy

,

040 (60 Hz)

045 (60 Hz)

AIt

040 (50 Hz)

0:; pg~l

,

040 (50 Hz) o;y;,y

,

045 (50 Hz)

050f”, Hz)

045 (50 Hz)

050 (60 Hz)

Alt,Bl**

:

:

5

045 (50 Hz)

050A\6$Hz)

045 (50 Hz)

yfyy2

I

045 (50 Hz)

:

i

7

*Unloaded compressor.

tCompressor unloader, standard.

**Compressor unloader, accessory.

ttTwo unloaders, both unloaded.

1

z

6

7

32

4

1

:

5

:

: i

: i

1

:

4

5

:

4 i

1

;

4

:

1

:

CONTROL

STEPS

Table

4A

- Capacity

Control Steps, 040-070

LOADING SEQUENCE A

%

Displacement

(AwrW

Compressors

A l *

::

1~~

2 5

APB1

Al :Bl

A l *

%

1 0 0

Al”B1

Al ,kl

A l ”

s;

1;:

2 4

Al”B1

Al ,k

Al*

::

1::

-

-

-

-

-

i:

1::

Al% *

Al ‘,Bl

Al ,Bl

-

-

-

-

-

-

A l *

Al

Al *,Bl

Al ,Bl

Al*

:A

8°F

1 0 0

;:

is;

1 0 0

1 8

Al% *

Al ‘,Bl

Al ,Bl

A2-y y&tgi

Al ,i31

A2.p

: :

5 6

2

1 0 0

-

-

-

-

-

-

Al;Bl*

Al +,Bl

Al *,Bl

Al ,Bl

-

-

-

-

-

-

-

::

1%

-

-

-

-

-

-

-

-

-

-

-

-

::

5 3 i:

1 0 0

-

-

-

-

3 8

LOADING SEQUENCE B

%

Displacement tAppro

Compressors

-

-

-

-

-

-

-

2 5

5 0

Bl*

1::

-

-

-

AIBlil *

Al’,Bl

-

-

-

-

Bl*

:;

El

1 0 0

A l & *

Al ,‘sl*

Al .Bl

El z7

6 4

1::

-

-

-

Bl”

Al% *

Al,k

Al .Bl

-

-

-

-

-

-

-

-

-

-

Al ,Bl

5

UNIT

3 0 G N

050 (50 Hz)

060G Hz)

050 (50 Hz)

“g pgy

I

050 (50 Hz)

060A\~**Hz)

050 (50 Hz)

06g$,y

I

060 (50 Hz)

070fc Hz)

060 (50 Hz)

07Odpto**Hz)

060 (50 Hz) oypg~)

,

6

1

1

1

Y

Table 4A - Capacity Control Steps, 040-070 (cant)

I

LOADING SEQUENCE A LOADING SEQUENCE B

%

Displacement tApw0

Compressors

I

I a

Compressors

.

.

1 8

?I

5 6

1:;

7 3

2 8

.

Al*

Al”B1

Al ,k

Al*

-

-

-

-

B l *

A l % *

Al’,Bl

Al ,Bl

A&t!

#$Vg,

Al ,‘sl yi!

Al&l’

Al ,‘sl*

Al ,Bl

-

-

-

-

-

-

-

-

-

-

1 5

-

-

-

-

-

A;p

Al~~Bl*

A$t!g’

Al ,‘sl

Al*

Al”Bl

Al ,i31

Al*

Al% *

Al ‘.Bl

Al @I

A:$

AV$B1

Al .Bi

-

-

-

-

-

-

-

zi

6 6

8 3

1 0 0

-

-

1 8 z:

8600

1 0 0

-

-

-

-

-

-

-

-

i

-

-

Bs’lt,t

“d,i;t)

Al’,Bi

-

-

-

-

-

Bl*

Al&’

Al .i31*

Ai,Bl

Ei:

8 3

1 0 0

*Unloaded compressor.

j-Compressor unloader, standard.

**Compressor unloader, accessory.

ttTwo unloaders, both unloaded.

. .

i

;.

UNIT

30GN

060

(50 Hz)

“‘“G Hz) oy&ya

,

070 (50

Hz)

Al t**,Bl**

*Unloaded compressor.

tCompressor unloader, standard.

**Compressor unloader,

accessory.

ttTwo unloaders, both unloaded.

Table 4A - Capacity Control Steps, 040-070 (cant)

LOADING SEQUENCE A

%

Displacement tApprod

1 6

Compressors

T

LOADING S

%

Displacement

(Approx) i!

2:

:i

1 0 0

2

6 5 i;

1 0 0

Al*

A-FBI

Al

Al ,k l

,A2,Bl

Al ,A2.B1

Al”

ii:

8 3

1 0 0

-

-

-

-

-

WENCE B

Al’,61

-

B l *

Al% l

Al fB1

Al ,Bl

Al *,A2,Bl*

Al *,A2,Bl

Al ,A2,Bl

-

-

-

-

-

Al& *

Al ,‘sl*

Al ,Bl

Al*,A2,Bl*

Al .A2.B1*

Ai’,A2’,Bl

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

1 5

::

5 7 ii

-

-

-

-

-

ylf,t

Al& l

Al :Bt

Al ,A2,Bl*

Al .A2.B1

A&’

Al :Bl

Al ,A2,Bl*

Al ,A2,Bl

-

-

,

UNIT

3 0 G N

080 (60 Hz)

Aly*,Blv

08Aqy;,y

,

Table 4B - Capacity Control Steps, 080-110 and Associated Modular Units

I

LOADING SEQUENCE A

Compressors r

LOADING SEQUENCE B

%

Displacement

(4wW

Compressors

-

-

-

-

-

-

A l *

Al

Al*,Bl*

Al *,Bi

Al ,Bl

Al *,A2,Bl

Al .A2.B1

Aiti

A l ”

Al+yBl*

AA’;Jgl

Al ,Bl

Al *.A2.B1

Al ,A2,Bl

-

-

-

-

-

z!

:: iii

1 0 0

-

-

-

-

-

-

-

-

Bl*

Bi

Ai*,Bl*

Al,Bl*

Al ,Bl

Al .A2.81*

Ai,A2,Bi

-

-

-

-

y-/i+

A$-hJ

Ai,Bl

Al ,A2,61*

Al ,A2,Bl

Al t t

Ai*.

Be’lt,t

Al+yBl*

Al ++,Bl

Al *,Bl

Al ,Bl

Al *.A2.B1

Al ,k2,Bl

A l *

Al% *

Al $1

Al ,Bl

Al *,A2,Bl*

Al *,A2,Bl

Al ,A2,Bl

Al t t

A l *

-

-

A;{:;:)

Al’,Bl

Ai,A2,Bl*

Al ,A2,Bl

-

Bl*

A&*

Al,‘Bl*

Al ,Bl

Al *,A2,Bi *

Al ,A2,Bl*

, ,

-

-

Al+?Bl*

AWtSg

Al ,Bl

Al ++,A2,Bl l

A4l&pi’&

Al .A2,Bl

-

-

-

-

-

-

-

-

A;.$!

-

-

-

-

-

-

-

-

-

B1 t t

Bl*

AIB:l *

Ai,61

Al *,A2,Bl++

A;;“A’;“Wt

Ai.A;,Bl y&f

080 ( S O H z )

Aif”*,6if**

Al+?Bl*

AJ&t,$

Al ,Bl

Al ++,A2,Bl*

AAit,-bA&l

Al ,A2,Bl

*Unloaded compressor.

+Compressor unloader, standard

**Compressor unloader, accessory

++Two unloaders, both unloaded.

NOTE: These capacity control steps may vary due to lag compressor sequencing.

AIBlk *

Ai,Bl

Al *,A2,B1++

“d;“A’;“B’lt’t

Ai,Ai,Bi

-

-

UNIT

30GN

090 (60

Hz)

Aly*,Blt

Table 4B - Capacity Control Steps, 080-110 and Associated Modular Units (cant)

CONTROL

STEPS

l-

LOADING !

%

Displacement

VNwW iQUENCE A

Compressors

Al*

:;

E

5 3

65: ii

9 1

Al% *

Al ‘,Bl

Al ,Bl

Al *,A2,Bl*

Al *,AZ,Bl

Al ,A2,Bl

Al *,A2,Bl *,B2

Al *,A2,Bl ,B2

Al ,AZ,Bl,B2

A2.p

-

-

-

-

-

-

-

-

-

A;,%&1

Al*:B 1

A;!tf2UJ$

Al*A2 bl

Al tT,A2,i31 ,B2

Al *,A2,Bl ,B2

Al ,A2,Bl ,B2

-

-

-

-

-

-

-

-

-

-

-

-

LOADING 1

%

Displacement

(Approx)

:QUENCE B

Compressors

Bl*

;; ii

2; r3:

::

1 0 0

-

-

-

-

-

-

-

-

-

-

-

Al%*

Al,Bl*

Al ,Bl

Al *,Bl l

,B2

Al ,Bl *,B2

Al,Bl,B2

Al *,A2,Bl *,B2

Al ,A2,Bi *,B2

Al .A2.B1 .B2

-

-

-

-

-

-

-

-

-

-

-

-

A;,:&>

Al’,Bl

Al ,Bl tT,B2

Al ,Bl *,B2

Al ,Bl ,B2

Al ,A2,Bl t-t,82

Al .A2.B1 *.B2

Al’,A&Bl ,B2

Bitt

BP’

090 (60

Hz)

Alt**,BlY*

Al *,A2,Bl

Al ,A2,Bl

Al tt,A2,Bl ,B2

Al*,A2,Bl ,B2

Al ,A2,Bl ,B2

A l *

Al%1 *

Al ‘,Bl

Al ,Bi

Al *,A2,Bl*

Al *,A2,Bl

Al ,A2,Bl

Al *,A2,Bl:,B2

Al *.A2.B1 .B2

Al ,k2,Bi ,B2

A;:!

Al;; Bl

Al*,Bl

Al ,Bl

Al tt,A2,81 l

Al tt,AP,Bl

Al *,A2,61

Al ,A2,Bl

Altt,A2,Bl*,B2

Al tt,A2,Bi ,B2

Al *,A2,Bl ,B2

Al .A2.61 .B2

*Unloaded compressor.

tCompressor unloader, standard.

**Compressor unloader, accessory

TtTwo unloaders, both unloaded.

NOTE: These capacity control steps may vary due to lag compressor sequencing.

-

-

-

-

-

-

-

-

-

-

-

8 0

8 2

9 1

“d,:;tJ

Ai,Bl

AAli BB’lt,t~~2

Ai,Bl ,B2

Al ,A2,Bl TT,B2

Al .A2.Bl*.B2

Al’,Ai, Bl ,B2

Bi*

Al& *

Al ,Bl*

Al ,Bl

Al*,Bl*,B2

Al,Bl*,B2

Al ,Bl ,B2

Al*,A2,Bl *,B2

Al .A2.Bl *.B2

Al’,Ai,Bi ,B2

-

-

-

-

-

-

9

UNIT

3 0 G N

090 (50 Hz)

Alt,Bly

Table 4B - Capacity Control Steps, 080-110 and Associated Modular Units (cant)

CONTROL

STEPS r

LOADING

%

Displacement

(APPW

-

-

Compressors

-

-

-

-

-

-

T

LOADING SEQUENCE B

%

Displacement

(4wW

Compressors

7

:;’ ii

4 3

-

-

-

-

-

-

-

-

-

-

-

Pii

6 0

7”:

Ei

1 0 0

Al*,BlTT,BZ

“d;B~ltt~~2

A1’,Bl*k

Al *,A2,Bitt,Bl

Al ,A2,BlTt,Bl

A$!!

BB’.p

090 (50 Hz)

Al t**,Bl t**

Al;; Bl

Al +I

Al ,Bl

Al tt,AZBl tt

Altt,A2,Bl*

AlTT,A2,Bl

Al *,A2,Bl

Al ,A2,Bl

Al tt,A2,Bl *,B2

Al TT,A2,Bl ,B2

Al*,A2,Bl ,B2

Al .A2,Bl .B2

Al*

A;;:;H

Al’,Bl*

Al*,Bltt,B2

Al ,Bi TT,B2

Al ,Bl”,B2

Al ,Bl ,B2

Al tt,AZBl tt,B2

Al *,A2,Bl j-T,B2

Al ,A2,Bl TT,B2

Al ,A2,61*,62

Al ,A2,Bl B2

A l *

100, 2408,

Al% *

Al (61

Al ,Bl

Al *,A2,Bl*

;;*J.p;

Al *,A2,& *,B2

Al *,A2,Bl ,B2

Al ,A2,Bl ,B2

“Alt!

Al% *

Al ‘,Bl

Al ,Bl

Al *,A2,Bl*

Al *,A2,Bf

Al ,A2,Bl

Al *,A2,Bi*,B2

Al *,A2,Bl ,B2

Al ,A2,Bl ,B2

-

100,24OB,

270B (60 Hz)

Alt**,Blt

AltAt Bl

Al*,&

Al ,Bl

Al Tt,A2,Bl*

Al Tt,A2,Bl

Al *,A2,61

Al ,A2,Bt

Al tt,A2,Bl *,B2

Al Tt,A2,Bl ,B2

Al *.A2.B1 .B2

Al ,A2,i31,‘82

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

100,24OB,

270B (60 Hz)

Alt,Blt^*

i

1 0

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Ai,-Bi

Al*.Bltt.B2

Al ,A2,BltT,B2

Al .A2.B1 *.B2

Al’,A$Bl ,B2

*Unloaded compressor

+Compressor unloader, standard.

**Compressor unloader, accessory.

TtTwo unloaders, both unloaded.

NOTE: These capacity control steps may vary due to lag compressor sequencing

1 0

UNIT

3 0 G N

100, 2406,

270B (60 Hz)

Alr*,Blr

Table

40 - Capacity Control Steps, 080-I IO and Associated Modular Units (cant)

LOADING SEQUENCE A

%

Displacement

(Awr ox)

Compressors

8

Altt

A l *

r

LOADING

%

Displacement

(Apex)

8

EQUENCE B

Compressors

Bitt

Bl*

:i

1 0 0

A$;g

Al ,bl

Al tt,A2,61*

Al tt,A2,61

Al *,A2,Bl

Al ,A2,Bl

Al tt,A2,Bl *,B2

Al tt,A2,Bl ,B2

Al *,A2,Bi $32

Al .A2.B1 .B2

:A

20”

::

;“7

E-

100

Al “B: tt

Ai,Bl*

Al ,Bl

Al*,Bltt,B2

“A;“B’lt”tb;2

Al’,Bl ,b2

Al *,A2,Bl tt,B2

Al ,A2,Bi tt,B2

Al ,A2,Bl l

,BZ

Al .A2,Bl ,B2

Bl*

:;

2 6

Al*

100, 240B,

2708 (50 Hz)

A1tW-t

100, 240B,

2708 (50 Hz)

Aft**,Blt

i

E

1 4

;

9

::

1 0 0

7

A l % *

Al :Bl

A1 ,Bl

A l *,A2,Bl*

Al *,A2,Bl

Al ,A2,Bl

Al *,A2,Bl *,B2

Al*.A2.81 .B2

Al ,‘A2@1,82

Al t t

A l *

Wtf2Z$’

-

-

-

-

-

-

-

-

-

-

-

-

Al% *

Al,bl*

Al ,Bl

Ad;g *‘8822

Al’,Bl*b2

Al *,A2$1 *,B2

Al .A2.B1 l

.B2

Al’,Ai,Bl ,B2

-

-

-

-

-

-

-

-

-

-

-

-

-

-

100, 2408,

270B (50 Hz)

Alt,Blt**

:

::

1 2

:

5

6

8’

9

::

-

-

-

-

-

-

-

-

-

-

-

-

-

Al ,kI2,i31

Altt,A2,Bl *,B2

Al tt,A2,Bl ,B2

Al *,A2,Bl ,B2

Al .A2.Bl.B2

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Bitt

Bl*

Ai,F;hJ

Al’,Bl

Al*,Bl tt.132

Al ,‘Bl ff,‘B2

Al ,Bl *,B2

Al ,Bl,B2

Al*,A2,Bl tt,B2

Al ,A2,Bl tt,B2

Al .A2,Bl *.B2

Altt

A l *

:

100, 2408,

270B (50 Hz)

Alr*,Blt”*

ii i

::

E

::

1 6

;

9

A;,;h; 1

Al ,‘sl

Al tt,AZBl tt

A l tt,A2,Bl*

“A’p/pg

A1*iI2 bl

Al tt,/i2,Eil tt,B2

Altt,A2,Bl*,B2

Altt,A2,Bl ,B2

Al l

,AZ,Bl ,B2

Al ,A2,Bl ,B2

Al :li t+

Ai,Bi*

Al,Bl

Al tt,Bl tt,B2

Al *,Bl tt,B2

AAlj “B’(t;3122

Al’,Bl ,b2

Al tt,AZBl tt,B2

Al *,A2,Bl tt,B2

Al ,A2,Bl tt,B2

Al ,A2,Bl *,B2

Al ,A2,Bl ,B2

*Unloaded compressor.

tCompressor unloader, standard

**Compressor unloader, accessory.

tfTwo unloaders, both unloaded.

NOTE: These capacity control steps may vary due to lag compressor sequencing.

11

UNIT

30GN

110 (60 Hz)

Al t**,Bl Y

Table 48 - Capacity Control Steps, 080-110 and Associated Modular Units (cant)

LOADING SEQUENCE A

%

Displacement

(ApprW

1 4

Compressors

Al*

r

LOADING SEQUENCE B

%

Displacement

(Amrox)

Compressors

81”

;A

:: s6:

2

Al

&I *

Al ‘,Bl

Al ,Bi l

,A2,Bl*

Al *,A2,Bi

Al ,A2,Bl

Al*,A2,Bl*,B2

Al *.A2.B1 .B2

Al ,A2,Bl ,i32

A/p -

Al51 *

Al,Bl*

Al ,Bl

;;*gg

Ai’,Bl ,B2

Al*,A2,Bl*,B2

Al ,A2,Bl *,B2

Al ,A2,Bl ,B2

-

A;;;#

Al ,Bl

Al Tt,A2,Bl*

Al t-/-,A2,Bl

Al*,A2,Bl

Al ,A2,Bi

Al Tt,A2,Bl *,B2

Al -ft,A2,Bi ,B2

Al *.A2.B1 .B2

Al ,k2,Bl ,B2

-

-

-

-

-

-

-

-

-

-

1

-

-

-

-

-

-

-

-

B1 t t

Bl*

-

-

-

-

-

-

-

-

-

-

A’tt

A l ”

-

-

-

-

-

-

-

Al !% tt

Ai ,Bi*’

Al ,Bl

Al*,BlTT,B2

“A; BB’~t;3”2’

Al’,Bl ,B2

Al *,A2,Bl tT,B2

Al ,A2,Bl tT,B2

Al ,A2,Bl *,B2

Al ,A2,Bl ,B2 y&v

A;;hgl A;,=.$

Al ,Bl

A’tt,AZBl t t

Al tt,A2,Bl*

$-t&Z3

Al ,A2,Bl

Al tt,A2,Bl *,B2

Al Tt,A2,Bl ,B2

Al*.A2.B1 .B2

Al ,A2,Bl ,B2

Al*

Ai,Bl

Al *,Bl tT,B2

“A; B!&lW22’

Ai,Bl ,B2

Al ttNB’ttB2

Al *,A2,Bl tt,B2

A-l ,A2,Bl tT,B2

Al .A2.B1 *.B2

Al’,Ai,Bl ,i32

Bl*

110 (50 Hz)

Alt,Blt

A l % *

Al’,Bl

Al ,Bl

Al *,A2,Bl*

Al l

,A2,Bl

Al ,A2,61

Al *,A2,Bl *,B2

Al *,A2,Bl ,B2

Al .A2Bl .B2

*Unloaded compressor.

TCompressor unloader, standard

**Compressor unloader, accessory.

TtTwo unloaders, both unloaded.

NOTE: These capacity control steps may vary due to

lag

compressor sequencing

100

Al%

Al ,Bt*

Al

Al ,Bi l

,Bl *,B2

Al ,Bl *,B2

Al ,Bl ,B2

Al *,A2,Bl *,B2

Al .A2,Bl*.B2

A;,Ai,Bl ,B2

-

12

UNIT

3 0 G N

110 (50 Hz)

Alt**,Blt

110 (50 Hz)

Alt,Blv

110 (50 Hz)

Alt**,Blt**

Table 4B - Capacity Control Steps, 080-110 and Associated Modular Units (cant)

CONTROL

STEPS

: z

::

1 2

9 i

LOADING

%

Displacement

UWrW

SEQUENCE A

Compressors

-

-

-

-

-

-

-

-

-

-

a

A2.p

*$#l

Al ,Bl

“A:tkA2’i3BI~

AleA2 Bl

Al tf,A2,Bl ,B2

Al *,A2,Bl ,B2

Al ,AZ,Bi ,B2

-

-

-

-

-

-

-

-

-

-

-

-

*;$T

A l ; ; B l

Al *,Bl

Al ,Bl

*&Wf22il”l’

Al*A2 Bl

Al tt,A2,Bi ,B2

Al *,A2,Bl ,B2

Al ,A2,Bl ,B2

T

LOADING :

%

Displacement

(Arwox)

-

-

-

-

-

-

-

-

-

-

-

a

,QUENCE B

Compressors

-

-

-

-

-

-

-

-

-

-

-

Be’lt,t

*;,F;:t

Al’,Bl

“A;W&3$

Ai,Bi ,B2

Al ,A2,Bl tt,B2

Al ,A2,Bf *,82

Al .A2,Bl ,B2

“B’p

~,;~~J

AI’,Bl

Al ,BltT,B2

Al ,Bl *,B2

Al ,Bi ,B2

Al ,A2,Bl tt,B2

Al ,A2,B1 *,B2

Al .A2.B1 .B2

*Unloaded compressor.

TCompressor unloader, standard.

**Compressor unloader,

accessory

TTTwo unloaders, both unloaded.

NOTE: These capacity control steps may vary due to lag compressor sequencing

13

UNIT

30GN

130, 240A,

130, 240A,

130, 240A,

Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units

T-

LOADING EQUENCE A

r

LOAD11 EQUENCE B

%

Displacement

Mvrox)

Compressors

Al*

%

Displacement

VVwr ox)

Compressors

Bl*

:‘: :i

:fz

2;

;i

Ei

1 0 0

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Al% *

Al ‘,Bl

Al ,Bl

Al *,A2,Bl*

Al *,A2,Bl

Al ,A2,Bl

Al *,A2,Bi *,B2

Al*,A2,Bl ,B2

Al .A2.B1 .B2

’ Al’tt ’

Al*

AlgBl’

A$t;l”i’

Al ,kH

Al tt,A2,Bi *

Al tt,A2,B1

Al *,A2,Bl

Al ,A2,Bl

Al tj-,A2,Bi*,B2

Al tt,A2,Bl ,B2

Al *.A2.B1 .B2

A? ,iI2,-Bl ;B2

-

-

-

-

-

-

-

-

-

-

-

-

-

-

yp

z

2;

; :

-

-

-

-

-

-

-

-

K

100

-

-

-

-

-

-

-

Al&’

Al ,k*

Al

Al ,Bl l

,Bl l

,B2

Al ,Bi *,B2

Al ,Bl ,B2

Al?,A2,Bl *,B2

Al ,A2,Bf*,B2

Al ,A2,Bl ,B2

-

‘-

-

-

-

-

-

-

-

-

-

-

BJ.fJ

;-y;;;;

Ai,Bi*

Al ,Bl

Al *,Bl tt,B2

“A;B&t$&2

Al’,Bl ,k2

Al *,A2,Bl tt,B2

Al ,A2,Bl tt,B2

Al ,A2,Bl *,B2

Al ,A2,Bl ,B2

BB’!!

Al*%++

130, 240A,

AlRBl’

AAlt,t&’

Al ,kl

Al ttA2,Bl tt

Al tt,A2,Bl*

Al tt,A2,Bi

Al *.A2.B1

Al ,iI2,‘Bi

Al ttAW1 tt,B2

Al tt,A2,Bl *,B2

Al tt,A2,Bl ,B2

Al *.A2,Bl .B2

Al ,k2&,82

A l *

130,24OA,

A&l *

Al ‘,Bl

Al ,Bl

Al *,A2,Bl l

Al *,A2,Bl

Al ,A2,Bl

Al *,A2,Bl *,B2

Al*,A2,Bl ,B2

Al ,A2,Bl ,B2

Al *,A2,A3,Bl *,B2

Al *,A2,A3,Bl ,B2

Al .A2.A3.Bi

.B2

*Unloaded compressor tCompressor unloader, standard.

**Compressor unloader, accessory ttTwo unloaders, both unloaded

NOTE: These capacity control steps may vary due to lag compressor sequencing+

Al.,Bl

Al t-t-41 tt,B2

Al *,Bl tt,B2

“A; BB’~~~~2

Altt,A2,Bltt,B2

Al

Al’,Bl ,k2 l

,A2,Bl tt,B2

Al ,A2,Bl tt,B2

Al .A2.B1 *.B2

Al’,A2’,Bl ,i32

B l *

Al& *

Al,kl*

Al ,Bl

Al *,Bl *,B2

Al ,Bl *,B2

Al ,Bl ,B2

Al*,A2,Bl *,B2

Al ,A2,Bl*,B2

Al ,A2,Bl ,B2

Al *,A2,A3,Bl *,B2

Al qA2qA3.81 *.B2

1 4

UNIT

3 0 G N

130, 24OA,

130,24OA,

Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant)

CONTROL

STEPS r

LOADING SEQUENCE A

%

Compressors

Displacement

hwrox)

6

“drt,t

-

-

-

-

-

-

-

AlPtlBl*

Al tt,Bl

Al l

,Bl

Al ,Bl

Al tt,A2,Bl*

“A’:t;P22~7El

Al*A2 Bl

Al tt,A2,Bl *,B2

Altt,A2,Bl ,B2

Al *,A2,Bi ,B2

Al ,A2,Bl ,B2

Al tt,A2,A3,Bl *,B2

Al tt,A2,A3,Bl ,B2

Al *,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

T

LOADING SEQUENCE B

%

Displacement

(Awrox)

-

-

-

-

-

-

-

-

-

-

-

Compressors

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Bitt

Bi*‘

AIB& *

Al’,Bl

Al *,Bl tt,B2

Al ,Bl tt,B2

Al ,Bl *,B2

Al ,Bl ,B2

Al ,A2,Bl tt,B2

Al ,A2,Bl*,B2

Al ,A2,Bl ,B2

Al ,A2,A3,Bl tt,B2,B3

Al ,A2,A3,Bi *,B2,B3

Al ,A2,A3,Bl ,B2,B3

A$v B;.p

130, 240A,

Al;t:Bl*

A;;Jbg’

Al ,Bl

Al tt,A2,Bl*

A;~tA$2’~1

Al*A2 Bl

Altt,;22,Bl*,B2

Al tt,A2,Bl ,B2

Al *,A2,Bi ,B2

Al ,A2,Bl ,B2

Al tt,A2,A3,Bl*,B2

Altt,A2,A3,Bi ,B2

Al*,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2

A l ’

Al

Al *,Bl*

Al *,Bl

Al ,Bl

Ai*,A2,Bl*

Al l

,A2,Bl

Al ,A2,Bi

Al *,A2,Bi l

,B2

Al *,A2,Bl ,B2

Al ,A2,Bl ,B2

Al*,A2,A3,Bl *,B2

Al *,A2,A3,81 ,B2

Al ,A2,A3,Bl ,B2

*Unloaded compressor.

tCompressor unloader, standard.

**Compressor unloader, accessory ttTwo unloaders, both unloaded.

NOTE: These capacity control steps may vary due to lag compressor sequencing.

-

AIBIL *

Al

Ai,Bi l

,Bl tt,B2

Al .Bl tt.B2

At ,Bf’*;B2

Al ,Bl ,B2

Al .A2.B1 tt.B2

Ai ,A2,Bl’*;B2

Al ,A2,Bl ,B2

Al ,A2,A3,Bl tt,B2

Al ,A2,A3,Bl l

,B2

Al ,A2,A3,Bl ,B2

-

-

-

-

Bi*

A&l *

Al ,Bl*

Al ,Bl

Al *,Bl *,B2

Al ,Bl *,B2

Al

Al ,Bl ,B2 l

,A2,Bl l

,B2

Al ,A2,Bl *,B2

Al

Al ,A2,Bl ,B2 l

,A2,A3,Bl *,B2

Al ,A2,A3,Bl*,B2

Al ,A2,A3,Bl ,B2

15

UNIT

3 0 G N

Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant)

LOADING EQUENCE A

r

LOADING EQUENCE 8

%

Displacement

(Apwxl

6

::

:“;

-

-

-

-

-

-

-

-

zi

4 9

5 3 ii i: i i :

9 5

1 0 0

-

Compressors

y-p

AlPtlBl’

“Att;l”l’

Al ,‘sl

AWh$Y;

Al ,A2,&

Altt,A2,Bi*,B2

Al tt,A2,Bl ,B2

Al *,A2,Bl ,B2

Al ,A2,Bl ,B2

Al tt,A2,A3,Bl ,B2

Al *,A2,A3,Bl ,B2

Al .A2.A3.81

.B2

-

-

-

-

-

-

-

-

-

-

-

-

-

%

Displacement

UQwrox)

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Compressors

-

-

-

-

-

-

-

-

-

-

-

B1 tt

BP-

AIBL *

Ai,Bl

Al *,Bl ft,B2

“Ai”B’lt”tb;’

Al’, Bl ,b2

Al ,A2,Bl *,B2

Al ,A2,Bl ,B2

Al ,A2,A3,Bl *,B2

Al .A2,A3,Bl ,B2

$y!

Bitt

Bl*

AIBIL *

Al ;kBl

Al *,Bl tt,B2

“A;B~ltti3”2’

Al’,Bl*i32

Al ,A2,Bi *,B2

Al ,A2,Bl ,B2

Al ,A2,A3,Bl *,B2

Al ,A2,A3,Bl ,B2

-

-

-

-

B l *

150 (60 Hz)

Aly*,Blt**

15Aq y4

I

Al;Bl*

Al tt’,Bl

Al *,Bi

Al ,Bl

A l tt,A2,Bl

Al *,A2,Bl

Al ,A2,81

Al tt,A2,Bl *,B2

Al tt,A2,Bl ,B2

Al *,A2,Bl ,B2

Al ,A2,Bl ,B2

Altt,A2,A3,Bi ,B2

Al *,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2

Ai*

A l % *

Al ‘,Bl

Al ,Bl

Ai*,A2,Bl*

Al *,A2,Bl

Al ,A2,Bl

Ai*,A2,Bl*,B2

Al*,A2,Bl,B2

Al ,A2,Bl ,B2

Al *,A2,A3,Bl *,B2

Al *.A2,A3.B1

.B2

Al ,k2,k3,Bl ,,B2

Al tt

A l *

Al;; Bl

A l * , &

Al ,Bl

Wh‘v‘&E&’

Al ,h2,1Bl

Al tt,A2,Bl ,B2

Al *,A2,Bl ,B2

Af ,A2,Bl ,B2

Al tt,A2,A3,Bi ,B2

Al *,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2

*Unloaded compressor.

tCompressor unloader, standard

**Compressor unloader, accessory.

ttTwo unloaders, both unloaded

NOTE: These capacity control steps may vary due to lag compressor sequencing

16

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Al&q*

Al ,‘sl*

Al ,Bl

Al *,Bl *,B2

Al ,Bl *,B2

Al ,Bl ,B2

Al *,A2,Bl *,B2

Al ,A2,Bl *,B2

Al ,A2,Bl ,B2

Al *,A2,A3,Bl *,B2

Al ,A2,A3,Bl *,B2

Al ,A2,A3,Bl ,B2

-

-

-

-

-

-

-

-

-

-

-

UNIT

SIZE

150 (50 Hz)

Alt,Bly*

Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant)

SEQUENCE B

LOADING SEQUENCE A

%

Displacement

Compressors

(4wrox)

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

A2.p

Compressors

Bitt

Bl-*.

“A;“B’:t;3”2’

Al’,Bl*‘BP

Al ,A2,Bl’tt,B2

Al ,A2,Bl *,B2

Al ,A2,Bl ,B2

Al ,A2,A3,Bltt,B2

Al ,A2,A3,Bl*,B2

Al ,A2,A3,Bl ,B2

“B’.p

150 (50 Hz)

Alr*,Blt*”

170, 270A, 300B,

,

A+;~;1

Al ,‘Bl

Al tt,A2,81

Al *,A2,Bl

Al ,A2,Bl

Al tt,A2,Bl ,B2

Al *,A2,Bi ,B2

Al ,A2,Bl ,B2

Al tt,A2,A3,Bl ,B2

Al *,A2,A3,Bl ,B2

Al .A2,A3,Bl ,B2

A l *

A l % *

Al*‘.Bl

Al ,‘Bl

Al *,A2,Bl*

Al ‘,A2,Bl

Al ,A2,Bl

Al *,A2,Bl *,B2

Al *,A2,Bi ,B2

Al ,A2,Bl ,B2

Al *,A2,A3,Bl *,B2

Al *,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2

Al*.A2.A3,Bl *.B2.83

Al ‘,Ai,A$Bl,82,83

Al ,A2,A3,Bl ,B2,B3

A$!!

170, 270A, 3008,

AltyBl*

A&tttt;’

Al ,kl

Al tt,A2,Bl* y&t3g

Al ,i2,kl

Altt,A2,Bl *,B2

Al tt,A2,Bl ,B2

Al *,A2,61 ,B2

Al ,A2,Bl ,B2

Al tt,A2,A3,Bl *,B2

Al tt,A2,A3,Bl ,B2

Al *,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2

Al tt,A2,A3,Bl *,B2,B3

Altt,A2,A3,Bl ,B2,B3

Al*,A2,A3,Bl ,B2,B3

Al ,A2,A3,Bl ,B2,B3

*Unloaded compressor.

tCompressor unloader, standard.

**Compressor unloader, accessory ttTwo unloaders, both unloaded.

NOTE: These capacity control steps may vary due to lag compressor sequencing.

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

A~i~~~~

AljBl

Al .Bl tt.B2

Ai ,B1’*;[32

Al ,Bl ,B2

Al ,A2,Bl tt,B2

Al ,A2,Bl *,B2

Al ,A2,Bl ,B2

Al ,A2,A3,Bl tt,B2

Al ,A2,A3,Bl *,B2

Al ,A2,A3,Bl,B2

Bl”

A&*

Al ,‘sl*

Al ,Bl

Al *,Bl *,B2

Al ,Bl *,B2

Al ,Bl ,B2

Al *,A2,Bi l

,B2

Al ,A2,Bl *,B2

Al ,A2,Bl ,B2

Al *,A2,Bl *,B2,83

Al,A2,Bl*,B2,B3

Al ,A2,Bl ,B2,B3

Al *,A2,A3,Bl *,B2,B3

Al ,A2,A3,Bl *,B2,B3

Al ,A2,A3,Bl ,B2,83

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

1 7

UNIT

SIZE

Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant)

170, 270A,300B,

LOADING SEQUENCE A

%

Displacement Compressors

(Aiwrox)

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Al tt

Al*

r

LOADING SEQUENCE B

6

Compressors

yp

;-;,q

Ai,Bi*

Al ,Bl

Al*,BItt,B2

“Ai”B’lttb”2’

Al’,Bl*BP

Al *,A2,Bi tt,B2

Al ,A2,Bl tt,B2

Al ,A2,Bl l

,B2

Al ,A2,Bl ,B2

Al *,A2,Bi -ft,B2,B3

Al ,A2,Bltt,B2,B3

Al ,A2,Bl *,B2,B3

Al ,A2,Bl ,B2,B3

Al *,A2,A3,Bl tt,B2,B3

Al ,A2,A3,Bl tt,B2,63

Al ,A2,A3,Bi l

,B2,B3

Al .A2.A3.Bl .B2.B3

B;$+

Al;Bl*

“Alt;tbT’

~l*;;{#

Al ,Bl

Alft,A2,Bl*

A&t$$V;

Ai,Bl*

Al ,Bl

Al *,Bl tT,B2

“A’iBe’~~~22

170,27OA, 300B,

Al ,A2,Bl

Altt,A2,Bl*,B2

Al tt,A2,Bl ,B2

Al *,A2,B1 ,B2

Al ,A2,Bl ,B2

Al tt,A2,A3,Bi *,B2

Al tt,A2,A3,Bl ,B2

Al”,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2

Al tf,A2,A3,Bl *,B2,B3

Al tt,A2,A3,Bl ,B2,B3

Al*,A2,A3,Bl ,B2,83

Al .A2,A3.B1

.B2,B3

Al*

Al’,Bl ,B2

Al *,A2,Bl tt,B2

Al ,A2,Bl tt,B2

Al ,A2,Bi *,B2

Al ,A2,Bl ,B2

Al *,A2,Bl tT,B2,B3

Al ,A2,Bltt,B2,B3

Al ,A2,81*,82,83

Al ,A2,Bl ,B2,B3

Al*,A2,A3,Bl tt,B2,B3

Al ,A2,A3,Bltt,B2,B3

Al ,A2,A3,Bl *,B2,B3

Al ,A2,A3,Bl ,B2,B3

Bl*

170,27OA,

9

300B,

33oA/,$cH350 Hz)

Al% *

Al ‘,Bl

Al ,Bl

Al *,A2,Bl*

Al *,A2,Bl

Al ,A2,Bl

Al *,A2,Bl *,B2

Al *,A2,Bl ,B2

Al ,A2,Bl ,B2

Al *,A2,A3,Bl *,B2

Al *,A2,A3,Bl ,B2

Al ,A2,A3,Bi ,B2

Al *,A2,A3,Bl *,B2,B3

Al *,A2,A3,Bl ,B2,B3

Al ,A2,A3,Bl ,B2,83

*Unloaded compressor.

tcompressor unloader, standard.

**Compressor unloader, accessory.

ttTwo unloaders, both unloaded.

NOTE: These capacity control steps may vary due to lag compressor sequencing

A&*

Al ,Bl*

Al ,Bl

Al *,Bl *,B2

Al ,Bl *,B2

Al ,Bl ,B2

Al *,A2,Bl *,B2

Al ,A2,Bl *,B2

Al ,A2,Bl ,B2

Al *,AZ,Bl *+B2,B3

Al ,A2,Bl*,B2,B3

Al ,A2,Bl ,B2,83

Al *,A2,A3,Bl *,B2,B3

Al ,A2,A3,Bl*,B2,B3

Al ,A2,A3,Bl ,B2,B3

18

U N I T

SIZE

Table 4C - Capacity Control Steps, 130210 and Associated Modular Units (cant)

CONTROL

STEPS

l-

LOAD11

%

Displacement

(Approx) i

SEQUENCE A

Compressors r

LOAD11

%

Displacement i SEQUENCE B

Compressors

170, 270A, 300B,

33OA/z, t”fB,:“O Hz)

I

170, 270A, 3008,

33OA/z, t”609+{,50 Hz)

,

z; i:

-

-

-

-

-

-

-

-

:

11

1 9

; :

:i

3 7

:i

::

7 2

;:

9 6

1 0 0

-

-

-

-

-

-

-

-

-

-

-

-

-

A)$

Al+yBl*

Altt;3B11

Al ,Bl

Al tt,A2,61*

*‘-J-&W~’

Al ,1A2,Bl

Al tt,A2,Bl *,B2

Al tt,A2,Bl ,B2

Al *,A2,Bl ,B2

Al ,A2,Bl ,B2

Al tt,A2,A3,Bl *,B2

AlTt,A2,A3,Bl ,B2

Al *,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2

Al tt,A2,A3,Bl *,B2,83

Altt,A2,A3,Bl ,B2,B3

Al*,AZ,A3,Bl ,B2,B3

Al ,A2,A3,Bl ,B2,B3

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

*;p

(APP~~x)

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Al’,Bl

Al *,BlTj-,B2

Al ,Bl tt,B2

A l . B l *.B2

Ai,Bl ,b2

Al*.A2,Bl tt,B2

Al ,A2,Bl ff,B2

Al ,A2,Bl *,B2

Al ,A2,Bl ,B2

Al *,A2,BItt,B2,B3

Al ,A2,Bltt,BZ,B3

Al ,A2,Bl *,B2,83

Al ,A2,Bl,B2,B3

Al *,A2,A3,Bltt,B2,B3

Al .A2.A3,Bl tt,B2,B3

Ai ,Ai,A$,Bt’*;82,63

Al ,A2,A3,Bl ,B2,B3

BB’!J

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

I31

Al*,Bltt

*~i~~~~

Al;T’Bl*

Al +,Bl

Al l

,Bl

Al ,Bl

Al t-),*2,61 *

“A! tA$2f,’

;;*;,’ ‘j

Ai,Bl*

Al ,Bl

Al tt,Bl

t-t,82

Al *,Bl tt,B2

“d;“B’W@&’

170,27OA, 3008,

330~A~~~f\; ff Hz)

,

81 i i ;

:A

1 0 0

Al*A2 Bl

Alft,A2,B’ltt,B2

Al tt,A2,Bl *,B2

Altt,A2,Bl ,B2

Al *,A2,Bl ,B2

Al ,A2,Bl ,B2

Al tT,A2,A3,Bl tt,B2

Al tt,A2,AS,Bf *,B2

Al tt,A2,A3,Bl ,B2

Al *,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2

Altt,A2,A3,Bltt,B2,B3

Altt,A2,A3,Bl*,B2,B3

Al tt,A2,A3,Bl ,B2,B3

Al *,A2,A3,Bl ,B2,B3

Al ,A2,A3,Bi ,BZ,B3

Al’,Bl*‘BZ

Al *,A2,Bi tt,B2

Al ,A2,Bl TT,B2

Al ,A2,Bl*,E32

Al ,A2,Bl ,B2

Al tt,A2,Bl tt,B2,B3

Al *,A2,Bl tt,B2,B3

Al ,A2,Bi tt,B2,B3

Al ,A2,Bi *,B2,83

Al ,A2,Bl ,B2,83

Al Tt,A2,A3,Bl tt,B2,B3

Ai*,A2,A3,Bltt,B2,B3

Al ,A2,A3,BlTt,B2,B3

Al ,A2,A3,Bl *,B2,B3

Al ,A2,A3,Bl ,B3,83

*Unloaded compressor.

j-Compressor unloader, standard

**Compressor unloader, accessory ttTwo unloaders, both unloaded.

NOTE: These capacity control steps may vary due to lag compressor sequencing.

1 9

-

UNIT

SIZE

190,36OA/B,

39oEpt Hz)

I

190,36OA/B,

39;: jfj’;,“”

,

190, 360A/B,

39;; (BGp*w

,

Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant)

r

l-

LOADIN< SEQUENCE B

CKEL

Compressors

%

Displacement

OVvW

Compressors

-

-

-

-

Ah

Al j2,B-i

Al ,A2,Bl ,B2

Al ,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2,63

Al* yp;

Al *,A2,81

Al ,A2,B1

Al *,A2,Bl ,B2

Al ,A2,81 ,B2

Al *,A2,A3,Bl ,B2

Al ,A2,A3,81 ,B2

Al *,A2,A3,Bi ,B2,B3

Al ,A2,A3,Bl ,B2,B3

-

-

-

-

-

-

-

-

-

-

-

-

A l *

Al

Al *,Bl *

Al *,Bl

Al,Bl

Al *,A2,Bl*

Al *,A2,Bl

Al ,A2,Bi

Al *,A2,Bl *,B2

Al *,A2,Bl ,B2

Al

Al ,A2,Bl ,B2 l

,A2,A3,Bl *,B2

Al *,A2,A3,Bl ,B2

Al

Al ,A2,A3,Bl ,B2 l

,A2,A3,Bl*,B2,B3

Al *,A2,A3,Bl ,B2,B3

Al ,A2,A3,Bl ,B2,83

2

41

5 6

1;:

-

-

-

-

-

-

-

-

A1B’Bl

Al ,&I ,B2

Al ,A2,Bl ,B2

Al .A2.B1 .B2.B3

Al ,A2,d3& ,@2,B3

-

-

-

-

-

-

-

-

-

-

-

Bl*

AIBf& *

Ai,Bl

Al ,Bl *,B2

Al,Bl,B2

Al ,A2,Bl *,B2

Al ,A2,Bl ,B2

Al ,A2,Bl *,B2,B3

Al ,A2,Bl ,B2,B3

Al ,A2,A3,Bl *,B2,83

Al ,A2,A3,Bl ,B2,B3

Bl*

Al& l

Al,i31*

Al ,Bl

Al *,Bl*,B2

Al ,Bl*,B2

Al ,Bl ,B2

Al*,A2,Bi *,B2

Al ,A2,Bl *,B2

Al ,A2,Bl ,B2

Al *,A2,Bl l

,B2,B3

Al ,A2,Bl *,B2,B3

Al ,A2,Bl ,B2,B3

Al *,A2,A3,Bl *,B2,83

Al ,A2,A3,Bl l

,B2,B3

Al ,A2,A3,Bl ,B2,B3

A%1

Al ,EkB2

Al ,A2,Bl ,B2

Al ,A2,Bl ,B2,B3

Al ,A2,A3,Bl ,B2,B3

-

-

190,36OA,

39OE31(6CC Hz)

,

A%1

Al ,A2,Bi

Al ,A2,Bl ,B2

Al ,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2,B3

A l * fk;

190,36OA,

39;; j:;,W

I

;;*A$&

Al *,A2,& ,B2

Al

Al ,A2,Bl ,B2 l

,A2,A3,Bi ,B2

Al ,A2,A3,Bl ,B2

Al *,A2,A3,Bl ,B2,B3

Al ,A2,A3,Bl ,B2,B3

*Unloaded compressor.

tCompressor unloader, standard.

**Compressor unloader, accessory.

TtTwo unloaders, both unloaded

NOTE: These capacity control steps may vary due to lag compressor sequencing

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

20

UNIT

SIZE

190,36OA,

39:: (8514w

,

Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant)

CONTROL

S T E P S

r

LOADING SEQUENCE A

%

Displacement Compressors

UVvW

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

l-

LOAD11

%

Displacement

PWprox)

1 1

:; ii

5 0

61

7; a 3

9 4

100

i SEQUENCE B

Compressors

Bl*

AIBt& *

Ai,Bl

Al ,Bl *,B2

Al,Bl,B2

Al ,A2,Bl *,B2

Al ,A2,Bl ,B2

Al ,A2,Bl *,B2,B3

Al ,A$,A$,Bi l

,82,83

Al ,A2,A3,Bl ,B2,B3

Bl*

A l *

190,36OA,

=J”8”1 y

,

Al%

l

Al’,BI

Al ,Bl

Al*,A2,Bi*

Al *,A2,Bl

Al ,A2,Bl

Al *,A2,Bl *,B2

Al *,A2,Bl ,B2

Al ,A2,Bl ,B2

Al *,A2,A3,Bl *,B2

Al *,A2,A3,Bi ,B2

Al ,A2,A3,Bl ,B2

Al *,A2,A3,Bl *,B2,83

Al *,A2,A3,Bl ,B2,63

At ,A2,A3,B t ,B2,B3

A&*

Al,i31*

Al

Al ,Bl l

,Bl *,B2

;-,BB’;g

Al *,i2,B? *,B2

Al ,A2,Bi *,B2

Al ,A2,Bi ,B2

Al *,A2,Bl *,B2,83

Al ,A2,Bl *,B2,B3

AI ,A2,Bl ,B2,B3

Al*,A2,A3,Bl*,B2,B3

AI .A2.A3.Bl

*.B2.B3

1 4

210,39QA,

420%:

(86p Hz)

I

210, 390A,

42y3g HZ)

,

210, 390A,

42of,Bs(f~~ Hz)

1

-

-

-

-

-

-

-

-

-

A&

Al ,A2,Bl

Al ,A2,Bl ,B2

Al ,A2,A3,81 ,B2

AI ,A2,A3,Bl ,B2,B3

Al ,A2,A3,A4,Bl ,B2,B3

A l *

Al

Al”B1

Al ,kl l

,A2,Bl

Al

Al ,A2,Bl l

,A2,Bl ,B2

Al

Al ,A2,Bl ,B2 l

,A2,A3,Bl ,B2

Al

At ,A2,A3,Bt ,B2 l

,A2,A3,61 ,B2,B3

Al

Al ,A2,A3,Bl ,B2,B3 l

,A2,A3,A4,Bi ,B2,B3

Al ,A2,A3,A4,Bl ,B2,B3

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

AK1

Al $1 ,B2

Al ,A2,Bl ,B2

Al ,A2,Bl ,B2,B3

Al ,A2,A3,Bl ,B2,B3

Al ,A2,A3.A4,Bl ,B2.B3

-

-

-

-

-

-

-

-

-

-

-

-

-

Bl*

Al’:1 *

Ai,Bi

Al,Bl*,B2

Al ,Bl ,B2

At ,A2,BI l

,B2

Al ,A2,Bl ,B2

Al ,A2,Bl l

,B2,B3

Al ,A2,Bl ,B2,B3

Al ,A2,A3,Bl *,B2,83

Al ,A2,A3,Bl ,B2,B3

Al ,A2,A3,A4,Bl *,B2,B3

Al ,A2,A3,A4,Bl ,B2,B3

*Unloaded compressor.

j-Compressor unloader, standard.

**Compressor unloader, accessory.

ttTwo unloaders, both unloaded.

NOTE: These capacity control steps may vary due to lag compressor sequencing.

2 1

r-

UNIT

SIZE

210, 390A,

420AIB (60 Hz)

Al**,Bl**

Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant)

LOAD11

i

SEQUENCE A

Compressors

Al*

Al% *

Al ‘,Bl

Al,Bi

Al *,A2,Bl*

Al *,A2,Bl

Al ,A2,Bf

Al”,AP,Bi *,B2

Al l

,A2,Bl ,B2

Al ,A2,Bl ,B2

Al *,A2,A3,Bl ‘,B2

Al *,A2,A3,Bi ,B2

Al ,A2,A3,Bl ,B2

Al *,A2,A3,Bl *,E32,B3

Al *,A2,A3,Bl ,B2,B3

Al ,A2,A3,Bi ,B2,B3

Al *,A2,A3,A4,Bl *,B2,B3

Al *.A2.A3.A4.B1

,B2,B3

Al ,k2,A3,A4,Bl ,B2,B3 f

LOADING SEQUENCE B

%

Displacement Compressors

(Approx)

9

Bl*

i;

Al% *

Al .Bl*

Al’,Bl

Al*.Bl*,B2

Al ,Bl *,B2

Al ,Bl ,B2

Al *,A2,Bl *,B2

Al ,A2,Bl *,B2

Al ,A2,Bl ,B2

Al *,A2,Bl *,B2,B3

Al ,A2,Bl*,B2,B3

Al ,A2,Bl ,B2,B3

Al *,A2,A3,Bl *,B2,83

Al ,A2,A3,Bl *,B2,B3

Al ,A2,A3,Bl ,B2,B3

AY*,A2,A3,A4,Bi *,B2,B3

Al ,A2,A3,A4,Bl*,B2,B3

Al ,A2,A3,A4,Bl ,B2,B3

210, 390A,

420/U; f-5; Hz)

,

210, 390A,

42Ofy;; w

,

A&

Al ,A2,Bl

Al ,A2,Bl ,B2

Al ,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2,B3

Al ,A2,A3,A4,Bl ,B2,B3

A l ”

Al”B1

Al ,Bl

Al *,A2,Bl

Al ,A2,Bl

Al *,A2,Bl ,B2

Al ,A2,Bl ,B2

Al*,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2

Al *,A2,A3,Bl ,B2,B3

Al ,A2,A3,Bi ,B2,83

Al*,A2,A3,A4,Bl ,B2,B3

Al ,A2,A3,A4,Bl ,B2,B3

-

-

-

-

-

-

210, 390A,

42Of,~gw

,

210,39OA,

42\yE gyp)

I

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Al*

Al% *

Al ‘,Bl

Al ,Bl

Al*,A2,Bl*

Al

Al *,A2,Bl

Al ,A2,Bl l

,A2,Bl *,B2

Al *,A2,Bl ,I32

Al ,A2,Bl ,B2

Al *,A2,A3,Bl *,B2

Al *,A2,A3,Bi ,B2

Al ,A2,A3,Bl ,B2

Al *,A2,A3,Bl *,B2,B3

Al *,A2,A3,Bl ,B2,83

Al ,A2,A3,Bl ,B2,83

Al*,A2,A3,A4,Bl*,B2,83

Al *,A2,A3,A4,Bl ,WB3

Al .A2.A3.A4.B1

BZB3

*Unloaded compressor tCompressor unloader, standard

**Compressor unloader, accessory ttTwo unloaders, both unloaded.

NOTE: These capacity control steps may vary due to lag compressor sequencing.

22

-

-

-

-

-

-

-

A&

Al $1 ,B2

Al ,A2,B1 ,B2

Al ,A2,Bl ,B2,B3

Al .A2.A3.Bl .B2.B3

Al ,A2,A3,A4,Bl ,B2,B3

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Bl*

AIB& *

Al’,Bl

Al ,Bl *,B2

Al ,Bl ,B2

Al ,A2,Bl *,B2

Al ,A2,Bl ,B2

Al ,A2,Bl *,B2,B3

Al ,A2,Bl ,B2,B3

Al ,A2,A3,Bl *,B2,B3

Al ,A2,A3,Bl ,B2,B3

Al ,A2,A3,A4,B1 *,B2,B3

Al ,A2,A3,A4,Bl ,B2,B3

B l *

Al& *

Al .Bl*

Al’,Bi

Al*.Bl*,B2

Al ,Bl *,B2

Al

Al ,Bl ,B2 l

,A2,Bl *,B2

Al ,A2,Bl *,B2

Al ,A2,Bl ,B2

Al *,A2,Bl *,B2,B3

Al ,A2,Bl *,B2,B3

Al ,A2,Bl ,B2,83

Al *,A2,A3,Bl*,B2,B3

Al ,A2,A3,Bl *,B2,B3

Al ,A2,A3,Bl ,B2,83

Al*,A2,A3,A4,Bl*,B2,83

Al ,A2,A3,A4,81*,B2,B3

Al ,A2,A3,A4,Bl ,B2,B3

A

UNIT

30GT

225 (60 Hz) r

Table 4D - Capacity Control Steps, 225, 250,280

LOAC

%

Displacement

(Awox)

1 2

2

4 6

E

1:;

\IG SEQUENCE A

Compressors

*1A’B1

Al ,A2,61

Al ,A2,Bl ,B2

Al ,A2,A3,Bl ,B2

Al ,A2,A3,Bf ,B2,B3

Al ,A2,A3,A4,Bl ,B2,B3

Al.A2.A3.A4.Bl.B2.B3.84

Al*

Al?Bl

Al ,Bl

Al *,A2,Bl

Al ,A2,Bl

Al

Al *,A2,Bl ,B2

Al ,A2,Bl ,B2 l

,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2

Al *,A2,A3,Bl ,B2,B3

Al ,A2,A3,Bl ,B2,83

Al *,A2,A3,A4,Bl ,B2,B3

Al ,A2,A3,A4,Bl ,B2,B3

Al*,A2,A3,A4,Bl,B2,B3,B4

Al ,A2,A3,A4,Bl ,B4,63,A4

A l *

Al _

Al *,Bl*

Al,Bl*

Al,Bl

Al *,A2,Bl*

Al *,A2,Bl

Al ,A2,Bl

Al *,A2,Bl *,B2

Al ,A2,Bl *,B2

Al ,A2,Bl ,B2

Al *,A2,A3,Bl *,B2

Al *,A2,A3,Bl ,B2

Al

Al ,A2,A3,Bl ,B2 l

,A2,A3,Bl l

,B2,B3

Al ,A2,A3,Bl *,B2,B3

Al ,A2,A3,Bl ,B2,B3

Al *,A2,A3,A4,Bl *,B2,B3

Al*,A2,A3,A4,Bl ,B2,83

Al ,A2,A3,A4,Bl ,B2,B3

Al*,A2,A3,A4,Bl*,B2,83,84

Al.A2.A3.A4.Bl*.B2.B3.84

A1’,Ai,A$A4,Bl ,B2,B3,B4 r

LOADING SEQUENCE B

%

Displacement

hwrox)

1 2

Compressors

A&

Al $1 ,B2

Al ,A2,Bl ,B2

Al ,A2,Bl ,B2,B3

Al ,A2,A3,Bl ,B2,B3

Al ,A2,A3,Bl ,B2,B3,B4

Al,A2,A3,A4,Bl,B2,B3,B4

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Bl*

Ai&*

Al ‘,Bl

Al ,Bl

Al *,Bl *,B2

Al ,Bl *,B2

Al,Bl,B2

Al *,A2,Bl *,B2

Al *,A2,Bl ,B2

Al ,A2,Bl ,B2

Al *,A2,Bl *,B2,83

Al ,A2,Bl*,B2,83

Al

Al ,A2,Bl ,B2,B3 l

,A2,A3,Bl*,B2,B3

Al *,A2,A3,Bl ,B2,83

Al ,A2,A3,Bl ,B2,83

Al *,A2,A3,Bl *,B2,83,84

Al ,A2,A3,Bl*,B2,B3,B4

Al ,A2,A3,Bl ,B2,B3,B4

Al*,A2,A3,A4,Bl*,B2,B3,B4

Al*,A2,A3,A4,Bl,B2,83,B4

At ,A2,A3,A4,Bl ,A2,B3,B4

225 (50 Hz)

A%

Al ,A2,Bl

Al ,A2,Bl ,B2

Al ,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2,B3

Al ,A2,A3,A4,Bl ,B2,B3

Al,A2,A3,A4,Bi,B2,B3,84

Al*

Ali’Bl

Al ,Bl

Al *,A2,Bl

Al ,A2,Bl

At *,A2,Bl ,B2

Al ,A2,Bl ,B2

Al *,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2

Al *,A2,A3,Bl ,B2,B3

Al ,A2,A3,Bl ,B2,B3

Al *,A2,A3,A4,Bl ,B2,B3

Al ,A2,A3,A4,Bl ,B2,B3

Al*,A2,A3,A4,Bl ,B2,B3,B4

Al,A2,A3,A4,Bl,B2,B3,84

*Unloaded compressor.

TCompressor unloader, standard.

**Compressor unloader, accessory

TtTwo unloaders, both unloaded.

NOTE: These capacity control steps may vary due to lag compressor sequencing

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

AL

Al $1 ,B2

Al ,A2,Bl ,B2

Al ,A2,Bl ,B2,83

Al ,A2,A3,Bl ,B2,B3

Al ,A2,A3,Bl ,B2,B3,B4

Al,A2,A3,A4,Bl,B2,B3,B4

-

-

-

-

-

-

-

-

-

-

-

-

23

UNIT

30GT

250 (60

Hz) r

Table 4D - Capacity Control Steps, 225, 250,280 (cant)

LOAC

JG SEQUENCE A

l-

LOAC

Compressors

4G SEQUENCE B

Compressors

Al*

Al% *

Al ,Bl*

Al ,Bl

Al *,A2,81*

Al *,A2,Bl

Al ,A2,Bl

Al *,A2,Bl *,B2

Al ,A2,B1 *,B2

Al ,A2,Bl ,B2

A l *,A2,A3,Bf*,B2

Al *,A2,A3,Bl ,B2

Al ,A2,A3,Bi ,B2

Al*,A2,A3,Bi*,B2,63

Al*,A2,A3,Bl ,B2,B3

Al ,A2,A3,Bl ,B2,B3

Al *,A2,A3,A4,Bl*,B2,83

Al *,A2,A3,A4,Bl ,B2,B3

Al ,A2,A3,A4,Bl ,B2,B3

Al*,A2,A3,A4,Bl*,B2,83,B4

Al*.A2.A3.A4.Bl.B2.63.84

Al ,A2,A3,A4,Bl ,B2,B3&4

Bl*

Al*B&*

Al,Bl*

Al ,Bl

Al *,A2,Bl*

Al *,A2,Bl

Al ,A2,Bl

Al *,A2,Bl *,B2

Al ,A2,Bl *,B2

Al ,A2,Bl ,B2

Al *,A2,A3,BI *,B2

Al*,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2

Al’,A2,A3,Bi*,B2,B3

Al *,A2,A3,Bl ,B2,B3

Al ,A2,A3,Bl ,B2,83

Al*,A2,A3,A4,Bl*,B2,B3

Al *,A2,A3,A4,B1 ,B2,B3

Al ,A2,A3,A4,Bl ,B2,B3

Al*,A2,A3,A4,Bl*,B3,B3,64

Ai*,A2,A3,A4,Bl ,B2,B3,B4

Al,A2,A3,A4,Bl,B2,B3,84

2 2

3 2

A%1

Al ,A2,Bl

Al ,A2,Bl ,B2

Al ,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2,B3

Al .A2.A3,A4.B1

.B2.B3

2 9

3 2 t:

5 4

5 7

100 s7:

:i

9 6

A l *

Al!‘Bl

Al ,Bl

“A:*gB;

Al *,A2,Bl ,B2

Al ,A2,Bl ,B2

Al *,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2

Al *,A2,A3,Bl ,B2,B3

Al ,A2,A3,Bl ,B2,B3

Al *,A2,A3,A4,Bl ,B2,B3

Al ,A2,A3,A4,Bi ,B2,B3

A1*,A2,A3,A4,Bl ,B2,B3,B4

Al,A2,A3,A4,Bl ,B2,B3,B4

A l *

Al% *

Al ,bl l

Al ,Bl

Al*,A2,Bl*

Al *,A2,01

Al

Al ,A2,Bl l

,A2,Bl *,B2

Al ,A2,Bl*,B2

Al ,A2,Bl ,B2

Al *,A2,A3,Bl*,B2

Al *,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2

Al*,A2,A3,Bl*,B2,B3

Al ,A2,A3,Bl *,B2,63

Al ,A2,A3,Bl ,B2,83

Al *,A2,A3,A4,Bl*,B2,B3

Al*,A2,A3,A4,Bl,B2,B3

Al ,A2,A3,A4,Bl ,B2,B3

Al*,A2,A3,A4,Bl*,B2,B3,B4

Al,A2,A3,A4,Bl*,B2,B3,B4

Al,A2,A3,A4,Bl,B2,63,84

*Unloaded compressor.

JCompressor un!oader, standard

**Compressor unloader, accessory ttTwo unloaders, both unloaded.

NOTE: These capacity control steps may vary due to lag compressor sequencing.

-

-

-

-

-

-

-

-

-

AK31

Al $1 ,B2

Al ,A2,Bl ,B2

Al ,A2,Bl ,B2,B3

Al ,A2,A3,Bl ,B2,83

Al .A2.A3.Bl

.B2,B3.B4

Al ,A2,d3,A4,Bl ,B2,B3,B4

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Bl”

Al% *

Al ‘,Bl

Al ,Bl

Al *,Bl*,B2

A l , B l “,B2

Al

Al ,Bl ,B2 l

,A2,Bl *,B2

Al *,A2,Bl ,B2

Al ,A2,Bl ,B2

Al *,A2,Bl *,B2,B3

Al ,A2,Bl *,B2,B3

Al ,A2,Bl ,B2,B3

Al*,A2,A3,Bl*,B2,B3

Al*,A2,A3,Bl ,B2,B3

Al ,A2,A3,Bl ,B2,83

Al*,A2,A3,Bl *,B2,B3,B4

Al,A2,A3,Bl*,B2,83,84

Al ,A2,A3,Bi ,B2,B3,B4

Al*,A2,A3,A4,Bl*,B2,B3,B4

Al*,A2,A3,A4,Bl,B2,B3,84

Al ,A2,A3,A4,Bl,B2,63,84

2 4

UNIT

3 0 G T

CONTROL

S T E P S

Table 4D - Capacity Control Steps, 225, 250, 280 (cant)

1G SEQUENCE A

r

LOADING SEQUENCE B

Compressors Compressors

250 (50 Hz)

280 (60 Hz)

250 f& Hz),

Al**

Al

Al ,A2,61

Al ,A2,Bl ,B2

Al ,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2,B3

Al ,A2,A3,A4,Bl ,B2,83

Al,A2,A3,A4,Bl,B2,B3,B4

A l ”

AlA’Bl

Al

Al ,Bl l

,A2,Bl

Al ,A2,Bl

Al *,A2,Bl ,I32

Al ,A2,Bl ,B2

Al*,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2

At*,A2,A3,Bl ,B2,B3

Al

Al ,A2,A3,Bl ,B2,B3 l

,A2,A3,A4,Bi ,B2,B3

Al ,A2,A3,A4,Bl ,B2,B3

Al*,A2,A3,A4,Bl,B2,83,84

Al,A2,A3,A4,Bl,B2,B3,B4

A l *

250 $;; Hz),

Al**,Bl**

Al% *

Al ,Bi*

Al ,Bl

Al *,A2,Bl*

Al ‘.A2.B-l

Al ,A2,Bl

Ai *.A2.B1 *,B2

Al ,A2,Bl *,B2

Al ,A2,Bl ,B2

Al *,A2,A3,Bl *,B2

Al l

,A2,A3,Bl ,B2

Al ,A2,A3,Bl ,B2

Al*,A2,A3,Bl *,B2,B3

Al ,A2,A3,Bi *,B2,B3

Al ,A2,A3,Bl ,B2,83

Al *,A2,A3,A4,Bl *,B2,B3

Al *,A2,A3,A4,Bl ,B2,83

Al ,A2,A3,A4,Bl ,B2,B3

Ai*,A2,A3,A4,Bl*,B2,B3,B4

Ai,A2,A3,A4,Bl*,B2,B3,B4

Ai,A2,A3,A4,Bl,B2,B3,B4

*Unloaded compressor.

-

-/-Compressor unloader, standard.

““Compressor unloader, accessory ttTwo unloaders, both unloaded

NOTE: These capacity control steps may vary due to lag compressor sequencing

AK1

Al $1 ,B2

Al ,A2,Bi ,B2

Al ,A2,Bl ,B2,B3

Al ,A2,A3,Bl ,B2,B3

Al ,A2,A3,A4,Bl ,B2,83

Al,A2,A3,A4,Bl,B2,B3,84

-

-

-

-

-

-

Bi*

-

-

-

-

-

-

-

A&*

Al ‘,Bl

Al

Al ,Bi l

,Bl*,B2

Al ,Bi *,B2

Al ,Bl ,B2

Al*,A2,Bl *,B2

Al l

,A2,Bl ,B2

Al ,A2,Bl ,B2

Al *,A2,Bl *,B2,B3

Al ,A2,Bl *,B2,B3

Al ,A2,Bl ,B2,63

Al*,A2,A3,Bi *,B2,B3

Al*,A2,A3,Bl ,B2,B3

Al ,A2,A3,Bl ,B2,B3

Al *,A2,A3,Bi*,B2,B3,B4

Al ,A2,A3,Bl*,B2,B3,B4

Al ,A2,A3,Bl ,B2,B3,B4

Al*,A2,A3,A4,Bl*,B2,B3,B4

Ai*,A2,A3,A4,Bi,B2,83,B4

Al ,A2,A3,A4,Bi ,B2,B3,B4

2 5

Head Pressure Control

- The microprocessor controls the condenser fans in order to maintain the lowest condensing temperature possible, thus the highest unit efficiency.

Instead of using the conventional head pressure control methods, the fans are controlled by the position of the EXV and suction superheat.

As the condensing temperature drops, the EXV opens to maintain the proper suction superheat. Once the EXV is fully open, if the condensing temperature continues to drop, the suction superheat begins to rise. Once the suction superheat is greater than 40 F (22.2 C), a fan stage is removed after 2 minutes,

As the condensing temperature rises, the EXV closes to maintain the proper suction superheat. Once the EXV has closed to 39.5% open (300 steps open), a fan stage is added after 2 minutes.

During start-up, all the condenser fans are started when the condensing temperature reaches 95 F (35 C) to prevent excessive discharge pressure during pulldown. See Table 5 for condenser fan sequence of operation.

30GN040-050

30GN060,070

30GN080,090

FAN ARRANGEMENT

Table 5 - Condenser Fan Sequence

I I

FAN NUMBER(S)

1

2

3

FAN CONTACTOR

WI

FC-Al

FC-Bi

FC-A2

I

4 FGB2

FC-Al

5 6

FGB2

FC-Al

I

I

CONTROLLED BY

Compressor Al

Compressor Bl

First Stage

Microprocessor

Second Stage

MicrODrOceSSOr

Compressor Al

Compressor Bi

First Stage

Microprocessor

Second Stage

Microprocessor

Compressor Al

Compressor Bi

. -_----

30GNl00,110 (and associated modular units)

30GN130-170 (and associated modular units)

WWER

30GN190,210 (and associated modular units)

1

2

3

4

5, 7, 6, 8

3, 4, 5, 6, 7, a

5 7

6,

8

FC-Al

F C - 8 1

F C - A 2

F&B2

FC-AS, FGB3

FC-A2, FC-A3 ,

FGB2, FC-B3

FC-Al

FC-Bl

Compressor Al

Compressor Bl

First Stage

Microprocessor

Second Stage

Compressor

T h i r d Stage

Microprocessor

Compressor Al

Compressor Bl

I

5, 7

6 . 8

3, 9

4, 10

1 , 3, 9, 11

2, 4 , 10, 1 2

I

I

FC-A2, FC-A3

FC-Al

FC-Bi

FC-A2

FC-B2

FC-A2, FGA3

FGB2, FC-B3

I

I

Compressor Al

Comwessor Bl

Frist Stage

Microprocessor

Second Stage

Microprocessor

*Control box.

26

L

/ ‘: i

/; k.

w

30GT225

30GT250 (60 Hz)

30GT250 (50 Hz) AND 30GT280

Table 5 - Condenser Fan Sequence (cant)

FAN ARRANGEMENT

FAN NUMBER(S)

7, 8

9, 1 0

5,

6

11, 1 2

1, 2, 3 , 4

13, 14, 15, 16

1, 2, 3, 4, 5, 6

11, 12, f3, 14, 15, 1 6

7, 8, 10

9, 17, 1 8

5, 6

11, 12, 19

1, 2, 3, 4, 13,

14, 15, 16, 20

1 , 2, 3, 4, 5, 6, 11, 12, 13,

14, 15, 16, 19, 2 0

7, 8, 1 0

9, 17, 1 8

5,

6

II, 12, 19,20

1, 2, 3, 4, 13,

14, 15, 16, 21, 22

1, 2, 3, 4, 5, 6, 11, 12, 13,

14, 15, 16, 19, 20, 21, 2 2

FAN C~;;jACToR CONTROLLED BY

FC-1

FC-4

FC-2

FC-5

FC-3

FC-6

FC-2, FC-3

FC-5, FC-6

F C - 1

FC-4

FC-2

FC-5

FC-3, FC-6, FC-7

FC-;&F6c;3kF;-5,

-3 -

FC-1

FC-4

FC-2

FC-5

FC-3, FC-6, FC-7

FC-2, FC-3, FC-4,

FC-5, FC-6, FC-7

Compressor Al

Compressor 61

First Stage

Microprocessor

Second Stage

Microprocessor

T h i r d S t a g e

Microprocessor

Compressor Al

Compressor Bl

First Stage

Microprocessor

Second Stage

Microprocessor

T h i r d S t a g e

Microprocessor

Compressor Al

Compressor Bl

First Stage

Microprocessor

Second Stage

Microprocessor

T h i r d S t a g e

Microprocessor

*Control box.

tPower box.

Pumpout -

When the lead compressor in each circuit is started or stopped, that circuit goes through a pumpout cycle to purge the cooler and refrigerant suction lines of refrigerant.

The pumpout cycle starts immediately upon starting the lead compressor and continues until the saturated suction temperature is 10” F (5.5” C) below the saturated suction temperature at start-up, is 10” F (5.5” C) below the cooler leaving fluid temperature, or reaches a saturated suction temperature of -15 F (-26 C). No pumpout is necessary if the saturated suction temperature is below -15 F (-26 C). At this point, the EXV starts to open and continues to open gradually to provide a controlled start-up to prevent liquid flood-back to the compressor.

At shutdown, the pumpout cycle continues until the saturated suction temperature for that circuit is 10” F (5.5” C) below the saturated suction temperature when pumpout is initiated, or saturated suction temperature reaches -15 F

(-26 C). At that point, the compressor shuts down and the

EXV continues to move until fully closed.

27

Keypad and Display Module (Also Called HSIO or LID)

- The only function of this module is to allow the operator to communicate with the processor. It is used to enter configurations and set points and to read data, perform tests, and set schedules. This device consists of a keypad with 6 function keys, 5 operative keys, 12 numeric keys

(0 to 9, 0, and -), and an alphanumeric g-character LCD

(liquid crystal display). See Fig+ 3. See Table 6 for key usage.

ACCESSING FUNCTIONS AND SUBFUNCTIONS - See

Tables 6 - 8. Table 7 shows the 6 functions (identified by name) and the subfunctions (identified by number).

Fig. 3 - Keypad and Display Module

SUMMARY DISPLAY - When keypad has not been used for 10 minutes, display automatically switches to the rotating summary display. This display has 4 parts, listed below, which appear in continuous rotating sequence.

DISPLAY

TUE 15:45

1 E X P A N S I O N

TODAY IS TUE, TIME IS 1545 (3:45 PM)

CLOCK ON

UNIT IS ON VIA CLOCK SCHEDULE

C O O L 1 NUMBER OF STAGES IS 1

I

2 ALARMS 1 2 ALARMS DETECTED

AUTOMATIC DISPLAY OPERATION/DEFAULT DIS-

PLAY - In this mode, the keypad displays the current time

(24”hour format), current operating modes, cooling capacity stages, and total number of alarms.

COOL x

DOW

- Day of Week

- Hour(s)

K - Minute(s)

MODE X

The default display is displayed every 2 seconds if there has been no manual input from the keypad for 10 minutes.

Table 6 - Keypad and Display Module Usage

FUNCTION

K E Y S

OPERATIVE

K E Y S

USE

STATUS - For displaying diagnostic codes and q

SRVC current operating information about the machine.

HISTORY - For displaying run time, cycles and previous alarms.

SERVICE - For entering specific unit configuration information.

ElEST

TEST - For checking inputs and outputs for

ElCHD proper operation.

SCHEDULE - For entering occupied/unoccupied schedules for unit operation

SET POINT - For entering operating set points and day/time information.

USE

EXPAND - For displaying a non-abbreviated expansion of the display

CLEAR - For clearing the screen of all displays

UP ARROW - For returning to previous display p o s i t i o n ,

DOWN ARROW - For advancing to next display p o s i t i o n .

A

ENTER - For entering data

KEYPAD OPERATING INSTRUCTIONS (Refer to

Table 9.)

1. White keys on left side of keypad are shown and operated in these instructions according to the following exq

, then the white key marked H .

2. The standard display uses abbreviations. Expanded information scrolls through the display whenever q key is pressed.

3. All functions are made up of a group of subfunctions.

To enter a subfunction, first press subfunction number desired. Then press the function key in which the subfunction resides. To move within that subfunction, press the q or m arrow. For example, a mpl enters the Temperature Information subfunction.

4. At any time, another subfunction may be entered by entering the subfunction number, then the function key.

5. Prior to starting unit, check leaving fluid set point for correct setting. Refer to Set Point Function section on page 39.

6. Depending on system configuration, all displays may not be shown. All displays are shown unless marked with the following symbol.

*Must be configured.

For additional unit start-up procedures, see separate Installation, Start-Up and Service Instructions supplied with unit.

28

su6FUNFT’oN

3

4

1

2

5

6

7

8

9

1 0

II

Status

A u t o m a t i c

Display

Alarm

D i s p l a y

;g;faQeratiw) plWe$Y

Set Points

(Current Operating)

Temperatures

Pressures

A n a l o g

I n p u t s outputs

-

Table

7

- Functions and Subfunctions

-

-

-

-

-

Test

TEST c l

outputs

Compressors and Unloaders

-

-

-

FUNCTIONS

Schedule

C H D

ICI

Override

Clock Set

Period 1

P e r i o d 2

P e r i o d 3

Period 4

Period 5

Period 6

Period 7

P e r i o d 8

HOLIDAYS

Service

c

SRVC l

-

-

-

-

Log On and

Log Off

V e r s i o n

(Software)

Factory

Configuration

F i e l d

Configuration

Service

Configuration

-

-

History

HIST

0

R u n T i m e

Starts

-

z

-

-

-

Alarm

History

-

-

-

-

-

-

-

-

Set Point

c

S E T l

S e t P o i n t s

(Chiller Fluid)

Reset

S e t P o i n t s

Demand Limit

S e t P o i n t s

Date and

T i m e

-

OPERATION

To access a function, press subfunction no and function name key. Display shows subf u n c t i o n @+oup.

To move to other elements, scroll up or down using arrow keys. NOTE: These displays do not show if control is not configured for reset.

Table 8 - Accessing Functions and Subfunctions

I

KEYPAD

ENTRY I

DISPLAY

RESPONSE

I p--jH

R E S E T

CRST2xx

CREF2xx

CRSTi x x

CREFlxx

I

When the last element in a subfunction has been displayed, the first element is repeated.

To move to next subfunction it is not necessary to use subfunction number Press function name key to ad-

Vance display through all subfunctions within a function and then back to the first

To move to another function, either depress function name key for desired function

(display shows the first s u b f u n c t i o n ) ,

Access a’ipecif ic subfunction by’using the subfunction number and the function name kev.

SET c l

SET

c l

SET

III

STAT

III

R E S E T

CRST2xx

DEMAND

T I M E

S E T

X ALARMS

DESCRIPTION

Reset Set Points

Cooling Maximum

Reset xx

Cooling Maximum

Reference xx

Cooling Minimum

Reference xx

Cooling Minimum

Reference xx

Reset Set

(ZtZi:SxxMaxirnurn

D e m a n d S e t

P o i n t s

Current Time and

Day of Week

U n i t S e t P o i n t s

-

R o t a t i n g D i s p l a y

Capacity Stages

29

2 ALARMS

3 MODES

4 STAGE

5 SET POINT

6 TEMPERATURE

I

LEGEND

CCN

- Carrier Comfort Network

E X V

- Electronic Expansion Valve

M O P

- Maximum Operating Pressure

Table 9 - Keypad Directory

KEYPAD ENTRY

STATUS

DISPLAY 1 COMMENT

Refer to Automatic Display Operation on page 28

Number of Tripped Alarms X A L A R M S

ALARM X

ALARM X

ALARM X

ALARM X

ALARM X

Displays Tripped Alarms

>

Number of Modes in Effect

X MODES

MODE X

MODE X

MODE X

MODE X

Displays Mode in Effect

S T A G E

S T A G E X

C A P T X

CAPA X

CAP0 X

L M T X *

LOAD X*

CIRA X

CIRB X

S M Z X

S E T P O I N T

SP x

M S P X

T W X

>

Capacity Staging Information

Number of Requested Stages

P e r c e n t o f T o t a l C a p a c i t y

Percent Circuit A Capacity

Percent Circuit 6 Capacity

Demand Limit Set Point

L o a d L i m i t S e t P o i n t

Circuit A Compressor Relay Status

Circuit B Compressor Relay Status

Load/Unload Factor for Compressors

Factor = 1 Unloader Factor = 0 6

Fluid Set Point Information

S e t P o i n t

Modified Set Point = Set Point + Reset

Cooler Leaving Fluid Temperature

T E M P S

EWTX

L W T X

S C T A X

S S T A X

CTA X

SHA X

Temperature Information

Cooler Entering Fluid Temperature

Cooler Leaving Fluid Temperature

Circuit A Saturated Condenser Temperature

Circuit A Saturated Suction Temperature

Compressor Al Suction Temperature

Circuit A Suction Superheat

*Must be configured j-If a p p l i c a b l e

3 0

6

;,;

SUBFUNCTION

6 TEMPERATURE (cant)

I

7 PRESSURE

8 ANALOG

9 1NPUTS

Table 9 - Keypad Directory (cant)

KEYPADENTRY

STATUS (cant)

DISPLAY

SCTB X

COMMENT

Circuit B Saturated Condenser Temperature

cl 4

qt cl 4 cl 4

0 4

S S T B X

C T B X

SHB X

R S T X *

Circuit B Saturated Suction Temperature

Compressor Bl Suction Temperature

Circuit B Suction Superheat

Reset Temperature

PRESSURE Refrigerant System Pressure (psig)

D P A X Circuit A Discharge Pressure

S P A X x x x x

OPA X

Circuit A Suction Pressure

Circuit A Discharge/Suction

Circuit A Oil Pressure Differential

Circuit B Discharge Pressure

DPB X

S P B X x x x x

O P B X

Circuit 8 Suction Pressure

Circuit B Discharge/Suction

Circuit B Oil Pressure Differential

ANALOG

REF X

L M T X *

R S T X *

I N P U T

SPW x*

DLI X*

DL2 X*

Status of Analog Inputs

Transducer Supply Voltage

Demand 4-20 mA Signal

Reset 4-20 mA Signal

Status of Switch Inputs

D u a l S e t P o i n t S w i t c h

D e m a n d L i m i t S w i t c h 1

D e m a n d L i m i t S w i t c h 2

31

SUBFUNCTION

10 OUTPUTS

Table 9 - Keypad Directory (cant)

STATUS (cant)

DISPLAY

OUTPUTS Status of Outputs

COMMENT

Alarm Relay K3 ALMR X

FRAI X

FRA2 X

FRBI X

FRB2 X

CHWP X*

Fan Relay Kl

Fan Relay K2

Fan Relay K4

Fan Relay K5

Cooler Water Pump Relay K6

ULAI X

ULA2 X*

ULBI X

ULB2 X*

E X V A X

E X V B X

HGBA X*

HGBB X

M M A X *

M M B X

Unloader Al t

Unloader A2T

Unloader Bl t

Unloader B2T

EXVA Percent Open

EXVB Percent Open

Hot Gas Bypass Relay Circuit A

Hot Gas Bypass Relay Circuit B

Motormaster@ A Output Percent

Motormaster B Output Percent

TEST

To use Test function, LOCAL/ENABLE-STOP-CCN switch must be in STOP position To operate a test, scroll to desired test

Then, press m to start test. Press m to stop test.

KEYPAD ENTRY

SUBFUNCTION

1 OUTPUTS

DISPLAY

OUTPUTS

8 8 8.8.8 8.8.8

ALMR X

FRAI X

FRA2 X

FRBl X

FRl32 X

CHWP X*

EXVA X

E X V B X

HGBRA X*

HGBRB X*

M M A X *

M M B X *

COMMENT

Test Outputs

Display Check

Energize Alarm Relay K3

Energize Fan Relay Al Kl

Energize Fan Relay A2 K2

Energize Fan Relay Bi K4

Energize Fan Relay 82 K5

Energize Cooler Water Pump K6

Enter Desired EXVA Position

Enter Desired EXVB Position

Energize Hot Gas Bypass Relay A

Energize Hot Gas 8ypass Relay B

Enter Desired Motormaster@ A Output Signal

Enter Desired Motormaster B Output Signal

32

Table 9 - Keypad Directory (cant)

TEST (cant)

During compressor test, compressors start and run for

10 seconds. Compressor service valves and liquid line valves must be open. Energize crankcase heaters 24 hours prior to performing compressor tests.

SUBFUNCTION

2 COMPRESSORS AND

UNLOADERS

KEYPAD ENTRY DISPLAY

C O M P

CPA1 X

CPA2 X*

CPA3 X*

COMMENT

Compressor and Unloader Test

Test Compressor Al

Test Compressor A2T

Test Compressor A3t

CPA4 X*

CPBl X

CPB2 x*

CPB3 X*

CPB4 X*

ULAl X

ULA2 X*

Test Compressor A4t

Test Compressor Bl

Test Compressor B2t

Test Compressor B3T

Test Compressor B4T

Energize Unloader Al T

Energize Unloader A2T

ULBl X

ULB2 X*

SCHEDULE

Energize Unloader Bl t

Energize Unloader B2t

T h e S c h e d u l e f u n c t i o n k e y CHD is used to configure the occupancy schedule The clock select subfunction

El can be used for unoccupied shutdown or unoccupied setback depending on the cooling set point control configuration. The Schedule function described is for clock 1, which is the internal clock. Password required for all subfunctions except override.

SUBFUNCTION 1 KEYPAD ENTRY

1 OVERRIDE

For example, to extend current occupied mode for 3 hrs, press:

I

ppii-j

I

DISPLAY

OVRD X

OVRD 3

I

COMMENT

Number of Override Hrs (0 - 4 Hrs)

Extended Occupied Time

2 CLOCK SELECT

/qzq

CLOCK XX Type of Clock Control

0 = No Clock, 1 = Clock 1 (Internal)

LEGEND

~~”

- Carrier Comfort Network

- Electronic Expansion Valve

M O P

- Maximum Operating Pressure

*Must be configured tlf a p p l i c a b l e .

33

To toggle between inputs (Yes/No) Press: Fi Fi

Table 9 - Keypad Directory

SCHEDULE (cant)

DISPLAY

PERIOD 1

OCC HH.MM

UN0 HH.MM

MON X

T U E X

WED x

THU X

FRl X

S A T X

SUN X

HOL X

4 PERIOD 2

COMMENT

Period 1 Time Schedule

O c c u p i e d T i m e

U n o c c u p i e d T i m e

M o n d a y F l a g

Tuesday Flag

Wednesday Flag

Thursday Flag

Friday Flag

Saturday Flag

Sunday Flag

Holiday Flag

/qH r i o 1 PERIOD 2 i m e S c h e d u l e

5 PERIOD 3 . . . 9 PERIOD 7

10 PERIOD 8

11 HOLIDAYS

~~ r i o 1 PERIOD 8 i m e S c h e d u l e

HOLIDAYS

DAT MM.DD

Define Calendar Holidays

H o l i d a y D a t e 1

New = Unassigned Holiday Date

DAT MM.DD

NN Holiday Date 30

For example: To enter July 4th holiday press: 07 04 01 q

. Display shows Jul 04 For further information on the Schedule function and its operation, refer to Schedule Function section on page 45.

SERVICE

To view and modify configurations, the password must be entered under the log on subfunction.

SUBFUNCTION

1 LOG ON AND LOG OFF

KEYPAD ENTRY r;lH

DISPLAY

L O G O N

COMMENT

Enter Password/Disable Password Protection

At this time, configurations may be modified. When finished viewing and/or modifying configur

LOG OFF

2 VERSION

EHTR

0

p-&q

E X I T L O G

VERSION x x x x x x x x c

4 l

X rtions, log out as follows:

Disable Password Protection

Logged Off/Enable Password Protection

Software Information

Version No. of Software (CESRXX)

Language Options

See legend on page 30

3 4

F.-’

I’ .

i j,

Fc,s;B,:

Table 9 - Keypad Directory (cant)

SERVICE (cord)

The next 3 subfunctions provide the ability to modify configurations Refer to separate Installation, Start-Up, and Service Instructions supplied with unit for further information on c h a n g i n g c o n f i g u r a t i o n s .

To change a configuration, enter the new configuration and press 4 while on the correct configuration.

SUBFUNCTiON

3 FACTORY

CONFIGURATION

KEYPAD ENTRY

Clt

DISPLAY

FACT CFG x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x

COMMENT

Factory Configuration Codes

Configuration Code 1

Configuration Code 2

Configuration Code 3

Configuration Code 4

Configuration Code 5

Configuration Code 6

4 FIELD

CONFIGURATION

5 SERVICE

CONFIGURATION ct

[It ct clt c lt

0t qt at qt clt

Cl+

Clt

p-&q

c lt c lt c l+ qt clt

clt

clt

Clt c lt

SRV CFG x x x x x x x x x x x x x x x x

REFRIG X

T D T Y P X

OPS x

LPS x

FANTYP X

SH X

M O P X

FLD CFG

EN0 X

B U S X

BAUD X

FLUID X

UNITS X

LANG X

NULA X

NULB X

HGB X

S E Q T X

SEQF X

OPS x

HEADM X

M M X

CSPTYP X

CRTYP X

E R T Y P X

L S T Y P X

RAMP X

LOCK X

CPC x

A d j u s t a b l e F i e l d C o n f i g u r a t i o n

CCN Element Address

CCN Bus Number

CCN Baud Rate

C o o l e r F l u i d S e l e c t

Display Unit Select

Display Language Select

No Circuit A Unloaders

No. Circuit B Unloaders

Hot Gas Bypass Select

L o a d i n g S e q u e n c e S e l e c t

Lead/Lag Sequence Select

Oil Pressure Switch Select

Head Pressure Control Method

Motormaster@ Select

C o o l i n g S e t P o i n t C o n t r o l S e l e c t

Cooling Reset Control Select

External Reset Sensor Select

Demand Limit Control Select

Ramp Load Select

Cooler Pump Interlock Select

Cooler Pump Control Select

Service Configurations

Configuration Code 7

Configuration Code 8

Refrigerant

Pressure Transducer Select

Oil Transducer Set Point

Low Pressure Set Point

F a n S t a g i n g S e l e c t

EXV Superheat Set Point

EXV MOP Set Point

3 5

Table 9 - Keypad Directory (cant)

SUBFUNCTION

1 RUN TIME

2 STARTS

KEYPAD ENTRY r;lm

1

2

1

DISPLAY

RUN TIME

HR X

HRA X

HRB X

S T A R T S

CY x

CYA X

CYB X

COMMENT

Run Time lnformation

Total Hrs Unit Has a Comp Operating

C i r c u i t A R u n T i m e

C i r c u i t B R u n T i m e

Starts Information

Cycles from Stage 0 to Stage 1

Circuit A Starts

Circuit B Starts

3 ALARM HISTORY I I 3 I lH4

Alarm Description ALARM X

ALARM X

ALARM X

J

>

SET POINT

To read a set point, go to proper subfunction and read desired set point To

LOCAL/ENABLE-STOP-CCN switch must be in LOCAL or STOP position,

SUBFUNCTION KEYPAD ENTRY

DISPLAY

c h a n g e a set point, enter new set point value, t h e n press

COMMENT

1 SET POINTS

SET POINT

CSPl x

J n i t S e t P o i n t

C h i l l e r F l u i d S e t P o i n t 1

2 RESET SET POINTS

ALARM X

ALARM X

CSP2 x

H S P A X

H S P B X

CRAMP X t

R E S E T

C R S T 2 X *

CREF2 X*

CRSTI X*

CREFI X*

Chiller F l u i d S e t P o i n t 2

Head

Pressure Set Point Circuit A

Head Pressure Set Point Circuit B

Pulldown Limit

Reset Set Points

Cooling Max Reset

Max Reset Occurs at X mA or Degree

Cooling Minimum Reset

Min Reset Occurs at X mA or Degree

3 DEMAND SET POINTS

4 DATE AND TIME

DEMAND

DLSl X*

DLS2 X*

DMAX X*

RMAX X*

DMIN X*

RMIN X*

SHED X”

DATE.TIME

DAY HR.MIN

MM.DD YR

36

Demand Set Points

Demand Switch 1 Set Point

Demand Switch 2 Set Point

4-20 mA Maximum Demand Limit

Max Demand Limit Occurs at X mA

4-20 mA Minimum Demand Limit

Minimum Demand Limit Occurs at X mA

CCN Loadshed Amount

Date, Time and Day of Week

Day 1 = Mon, 2 = Tues 7 = Sun

Hours are displayed in 24-hr time. Decimal point serves as colon.

Month.Day.Year.

When entering date, enter a decimal point between entries. Each entry must be two numbers.

i

STATUS FUNCTION - This function shows the rotating display, current status of alarm (diagnostic) codes, capacity stages, operating modes, chilled water set point, all measured system temperatures and pressures, superheat values, pressure switch positions, analog inputs, and switch inputs.

These subfunctions are defined on pages 37 and 38.

faults have been detected. Each fault is assigned a code number which is reported with the alarm. See Table 10 for code definitions. The codes indicate failures that cause the unit to shut down, terminate an option (such as reset) or result in the use of a default value as set point.

Up to 5 alarm codes can be stored at once. To view them in sequence, press mm to enter the alarm displays and then press q to move to the individual alarm displays. Press q after a code has been displayed. The meaning of the code scrolls across the screen. See Example 1

Example 1 - Reading Alarm Codes

K

E Y P A D

ENTRY

DISPLAY

RESPONSE

‘MvoEo;2;;5 p-jq

0 S T A G E S

2 ALARMS

2 A L A R M S

COMMENTS

Keypad has not been used for a t l e a s t 1 0 m i n u t e s . A l t e r n a t i n g summary display appears on screen

2 alarms detected

A L A R M 9 First alarm code

COOLER LEAVING

FLUID THERMISTOR

F A I L U R E

Explanation of alarm code

A L A R M 4 2

Second alarm code Cooler freeze protection

COOLER FREEZE

P R O T E C T I O N

Explanation of alarm code

When a diagnostic (alarm) code is stored in the display and the machine automatically resets, the code is deleted.

Codes for safeties which do not automatically reset are not deleted until the problem is corrected and the machine is switched to STOP, then back to LOCAL/ENABLE or CCN.

mbi (Modes) - The operating mode codes are displayed to indicate the operating status of the unit at a given time. See Table 10.

Table 10 - Operationat and Mode Display Codes

The operating modes are displayed by name or code number, to indicate the operating status of the unit at a given time. The modes are:

CODE 1 DESCRlPTlON

LOCAL OFF

CCN OFF

CLOCK OFF

LOCAL ON

Unit is off. LOCAL/ENABLE-STOP-CCN switch is in OFF position, or LOCAL/ENABLE-STOP-CCN switch may be in LOCAL position with external ON/

OFF switch in OFF position

I

Unit is off due to CCN network command. LOCAL/

ENABLE-STOP-CCN switch is in CCN position.

Unit is off due to internal clock schedule. LOCAL/

ENABLE-STOP-CCN switch is in LOCAL position.

Unit is on. LOCAL/ENABLE-STOP-CCN switch is in LOCAL position If external ON/OFF switch is used, i t w i l l b e i n O N b o s i t i o n .

CCN ON

Unit is on due to CCN command LOCAUENABLE-

STOP-CCN switch is in CCN position.

CLOCK ON

I

Unit is on due to internal clock schedule or occupied override function. LOCALIENABLE-STOP-

CCN switch is in LOCAL position.

Dual set point is in effect In this mode, unit continues to run in unoccupied condition, but leaving water set point is automatically increased to a higher

M O D E 7

level (CSP2 set Point is in SET function)

MODE 8

I

Temperature reset is in effect. In this mode, unit is using temperature reset to adjust leaving water set point upward, and unit is currently controlling to the modified set point. The set point can be modified based on return water, outdoor-air temperature or space temperature

MODE 9

MODE 10

MODE II

MODE 12

Demand limit is in effect. This indicates that cap a c i t y o f u n i t i s b e i n g l i m i t e d b y d e m a n d l i m i t c o n trol option Because of this limitation, unit may not be able to produce the desired leaving water temperature

L o a d l i m i t i s i n e f f e c t . T h i s i n d i c a t e s t h a t c a p a c i t y o f a system of units is being limited by a CCN loadshed command Due to this limitation, unit may not be able to produce the desired leaving water temperature.

Not aoalicable.

I I

Ramp load (pulldown) limiting is in effect. In this mode, the r&e at which leaving water temperature is dropped is limited to a predetermined value to prevent compressor overloading, See CRAMP set point in the

S E T f u n c t i o n i n T a b l e 9 T h e pulldown l i m i t c a n b e modified, if desired, to any rate from 2 F to 2 F

( lo to lo Q/minute

MODE 13

Timed override is in effect This is a 1 to 4 hour temporary override of the programmed schedule, forcing unit to occupied mode Override can be implemented with unit under LOCAL or CCN control

Override expires after each use saturated suction temperature is 20” F (11” C) for

’ water or 30” F (16” C) for brine or more below

leav-

MODE 14

1

Low cooler suction protection is in effect In this mode, circuit capacity is not allowed to increase if cooler ing fluid temperature, and saturated suction temperature is less than 32 F (0’ C). If these conditions

CCN - CarrierComfort Network p e r s i s t b e y o n d 1 0 m i n u t e s , c i r c u i t i s s h u t d o w n a n d fault code 44 or 45 is displayed.

use

To enter the MODES subfunction, depress MFI and the q key to determine if more than one mode applies. See Example 2

to

read current mode with expansion.

37

Example 2 - Reading Current Operating Modes

KEYPAD

ENTRY

I

DISPLAY

RESPONSE I

TUE 15:45

LOCAL ON

C O O L 1

0 A L A R M S

COMMENTS

Keypad has not been used for at least 10 minutes Rotating summary display appears on screen p-lH 2 MODES

There are 2 modes currently in effect

LOCAL ON

Unit is on by chiller on/off switch

M O D E 8 Temperature reset is in effect l-ii 1;;;;1 (Stage) - This subfunction displays the capacity stage number. See Tables 4A-4D for compressor loading sequence. To enter the STAGE subfunction, press p--&q and use the q to display the stage number.

Additional m provides the following information:

Percent of total unit capacity being utilized.

Percent of each circuit capacity being utilized.

Demand limit set point in effect (can be any value between 0% and 100%).

Load limit set point in effect. This is a CCN function for controlling operation of multiple units between 0% and

100% of total capacity of all units combined.

Status

of each compressor relay. When a compressor is on, the number of that compressor is displayed. If a compressor is off, a 0 is displayed. For example: In a given circuit, if compressors 1 and 3 are running, and 2 and 4 are not running, 0301 is displayed for that circuit.

Load/Unload factor for compressors. This factor is an indication of when a step of capacity is added or subtracted. Its value can range from slightly less than -1 .O

to slightly more than + 1 .O. When load/unload factor reaches + 1.0, a compressor is added. When the load/ unload factor reaches -1 .O, a compressor is subtracted.

If compressor unloaders are used, at -.6 a compressor is unloaded and at + .6, a compressor is loaded up.

mF[ (Set Point) - This subfunction displays leaving water temperature and leaving chilled water set point. If unit is programmed for dual set point, the chilled water set point currently in effect (either occupied or unoccupied) is displayed. If reset is in effect, the unit operates to the modified chilled water set point. This means the leaving water temperature may not equal the chilled water set point The modified chilled water set point can also be displayed in the

Status function. To enter the set point subfunction, depress mb[ and use the q to display modified leaving chilled water set point followed by leaving water set point and actual cooler leaving fluid temperature.

plays the readings at temperature sensing thermistors.

To read a temperature, enter Fi Fi , then scroll to desired temperature using the m key. See Table 9 for the order of readouts.

flH (Pressure) - This subfunction displays suction, discharge and net oil pressure at lead compressor of each circuit of unit.

m H (Analog Inputs) - This subfunction displays analog inputs, if any. Enter m Fi , then use the q

. The transducer supply voltage, 4-20 mA reset signal can be displayed. This is useful for problem diagnosis prior to using the test function.

m bi - This subfunction displays status

(ON/OFF) of input switch where applicable. Status of dual set point switch, and demand limit switches 1 and 2 can be displayed. This is useful for problem diagnosis prior to using the test function.

~~ (Outputs) - This function displays ON/OFF status of alarm relay, all fan relays, and chilled water pump relay. It also displays ON/OFF status of compressor unloaders (if used). The position of each EXV (in percent open) can be displayed.

TEST FUNCTION - The test function operates the diagnostic program. To initiate test function, the LOCAL/

ENABLE-STOP-CCN switch must be in STOP position.

To reach a particular test, enter its subfunction number, then scroll to desired test by pressing the ( key. Press

B to start a test. Press exit a test. Pressing the q or q or H to terminate or q key after a test has started advances system to next test, whether current test is operating or has timed out, Once in the next step, you may start test by pressing H or advance past it by pressing I)I .

While the unit is in test, you may leave test function and access another display or function by pressing appropriate keys. However, a component that is operating when another function is accessed remains operating. You must re-enter test function and press the ) key to shut down the component. Components with a timed operating limit time

out

normally even if another function is accessed.

Keypad entry riF[ allows the operator to make the following checks by using m :

LID display check. Propezisplay is 8.8.8.8.8.8.8.8 .

Operation of remote alarm.

Operation of condenser fans.

Operation of chilled water pump.

Operation of EXVs. To drive EXV fully open, enter m m m (100% open). To drive EXV fully closed, enter u (0% open).

c compressor unloader operational tests.

During compressor operational tests, compressor starts and runs for 10 seconds. Compressor service valves must be open. Energize crankcase heaters 24 hours prior to performing compressor tests.

Since test function checks only certain outputs, it is good practice to also check all inputs and outputs accessible through the status function. These are located at F\ F[ , m H, and mm (see Table 9). If keypad is not used for 10 minutes, unit automatically leaves test function and resumes rotating display. See Example 3.

38

.

Example 3 - Using Test Function

KEYPAD DISPLAY

ENTRY

I RESPONSE

C O M P

COMMENTS

Factory/field test of compressors subfunction of test function

Circuit A, Compressor 1A test

CPA 1 OFF

CPA 1 ON cl+

CPA 1 OFF

CPA 2 OFF

Pressing ENTR starts the test: when the compressor should be running the display shows CPA1 on

If the test is allowed to time out (10 seconds) the display will show CPA1 off

Pressing the down arrow key advances the system to Circuit A, compressor 2 test

NOTE: Once a compressor has been run using the EST function, it is not allowed to run again for 30 seconds.

E l

HISTORY FUNCTION - Keystrokes mb] and subsequent [ keystrokes display total unit run time and total run time for each circuit.

Keystrokes m m and subsequent m keystrokes display total unit starts and the total starts for each circuit.

Keystrokes Fi b[ and subsequent q keystrokes display the last 5 alarms along with a description of each alarm.

SET POINT FUNCTION - Set points are entered through the keypad. Set points can be changed within the upper and lower limits, which are fixed. The ranges are listed below.

Chilled Water Set Point

Water:

38 to 70 F (3.3 to 21 C)

Brine:

15 to 70 F (-9.4 to 21 C)

Pulldown Set Point

0.2 to 2.0 F (0.11 to 1.1 C)/min.

Reset Set Points

Maximum Reset Range:

0” to 20” F (0” to 11” C)

Maximum Reset Reference Range:

Return Fluid Reset 0” to 20” F

(0” to 11” C)

External Temperature Reset 20 to 125 F

(-6.6 to 51.6 C)

External Signal Reset 4 to 20 mA

Minimum Reset Reference Range:

Return Fluid Reset 0” to 20” F

(0” to 11” C)

External Temperature Reset 20 to 125 F

(-6.6 to 51.6 C)

External Signal Reset 4 to 20 mA

Demand Limit Set Points

Switch Input:

Step 1 - 0 to 100% Capacity Reduction

Step 2 - 0 to 100% Capacity Reduction

External Signal:

Maximum Demand Limit 4 to 20 mA

Minimum Demand Limit 4 to 20 mA

Set points are grouped in subfunctions as follows: a. The first value shown is the occupied chilled water set point.

b. The next value displayed depends on how the schedule function has been programmed. (See pages 45-

47.) If dual set point has been selected, the next set point after m has been pressed is the unoccupied chilled water set point. If single set point or inactive schedule has been selected in the schedule function, then when q is pressed, the display shows the modified chilled water set point.

c. The final value displayed when the q is pressed is the cooling ramp loading rate. This is the maximum rate at which the leaving chilled water is allowed to drop, and can be field set from 0.2 to 2.0 F

(. 11” to 1.1” C)/minute. This value is not displayed unless the function is enabled (see Adjustable Field

Configurations on page 45).

Reading and Channinrr Set Points - Example 4 shows how to read and change the chilled water set point. Other set points can be changed by following the same procedure.

Refer to Table 9 for the sequence of display of set points in each subfunction.

Example 4 - Reading

and

Changing

Chilled Water Set Point

KEYPAD

E N T R Y

DISPLAY

RESPONSE

C O M M E N T S

S E T P O I N T

CSPl 44.0

System set points

Present occupied chilled water set point is 44 0 F

CSPI 420

CSP2 44.0

CSP2 50.0

R E S E T

~~~~~~~h~!$w~cupied chilled water set point is 42 0 F

P r e s e n t u n o c c u p i e d c h i l l e d w a t e r set point is 44.0 F

Press the Fi ri F[ l a y shows new unoccupied chilled water set point is 50.0 F

Displays the maximum reset and minimum reset set points The minimum and maximum reference reset set points can also be displayed.

These set points are not accessible when reset type has been configured for NONE in the service function

Temperature Reset Based on Return Water TemDerature -

The control system is capable of providing leaving water temperature reset based on return water temperature. Because the temperature difference between leaving water temperature and return water temperature is a measure of the building load, return water temperature reset is essentially an average building load reset method.

Under normal operation, the chiller maintairis a constant leaving water temperature approximately equal to chilled water set point. As building load drops from 100% down to

O%, entering cooler water temperature drops in proportion to load. Thus, temperature drop across the cooler drops from a typical 10 F (5.5 C) at full load to a theoretical 0” F (0” C) at no load. See Fig. 4.

At partial load, leaving chilled water temperature may be lower than required. If this is allowed to increase (reset), the efficiency of the chiller increases. Amount of reset can be defined as a function of cooler temperature drop, as shown in Fig. 4. This is a simple linear function that requires 4 pieces of input data for the set function:

39

I. Maximum Reset Amount (CRST2) - allowable range

0” to 20” F (0” to 11” C). This is maximum amount leaving chilled water set point is to be increased.

2. Maximum Reset Reference (CREF2) - allowable range

0” to 20” F (0” to 11” C). This is the cooler temperature drop at which reset reaches its maximum value.

3. Minimum Reset Amount (CRSTl) - allowable range

0” to 20” F (0” to 1 I” C). This is minimum amount leaving chilled water set point is to be increased when reset is initiated.

4. Minimum Reset Reference (CREFl) - allowable range

0” to 20” F (0” to 11” C). This is the cooler temperature drop at which reset is at its minimum value. (Reset begins here .)

NOTE: Reset set points are not accessible unless the reset function is enabled first. This is done as a field configuration. Select one of the 3 choices for type of reset: Return

Fluid Reset, External Temperature Reset, or 4-20 mA External Signal (with a loop isolator) Reset.

If dual set point control is enabled (see Field Wiring section on page 7 1), the amount of reset is applied to whichever set point is in effect at the time.

Example 5 demonstrates how to activate reset. Example

6 demonstrates how to change the type of reset. Assume that reset is to be based on return water temperature, the desired reset range is to be 2” to 10” F (1” to 5.5” C) and full load is a 10” F (5.5” C) drop across the cooler. See

Fig. 4.

Activating reset based on external temperature or

4-20 mA signal is done the same way, except the reference set point range is 20” to 125” F (-6.6” to 5 1.6” C), or 4 to

20 mA depending on which method was selected at the field configuration step.

f73c=)

-- /

35.3

Example 5 - Using Return Water

Temperature Reset

KEYPAD

ENTRY

DISPLAY

RESPONSE

COMMENTS

FLD CFG

C S P T Y P X

CRTYP 0

C R T Y P

S E T P O I N T

CPSl 44.0

CPSl 45 6

R E S E T

1

C R S T 2 0 0

C R S T 2 1 0 0

CREF2 0.0

CREF2 1.0

CRSTI 0 0

CRSTI 2.0

CREFl 0.0

CREFl 8 0

F i e l d c o n f i g u r a t i o n subfunction of s e r v i c e f u n c t i o n

S c r o l l p a s t s i n g l e / d u a l

Display shows no reset type has been selected

Return water temperature is selected and activated

System set points

P r e s e n t o c c u p i e d c h i l l e d water set point

Enter new chilled water set point

Reset set points

F;li;g maximum reset

0

Cooling maximum reset is 10 F

Cooling maximum reset reference is 0” F

Cooling maximum reset reference is 1 F

Cooling minimum reset is 0” F

Cooling minimum reset is 2 F

Cooling minimum reset reference is 0” F

Cooling minimum reset reference is 8 F

8

7

IO

9

18

16

MIN RESET REFERENCE (CREF

I

) q 13

100

8 0

6 0

2 3 4 5 6 7

RESET REFERENCE TEMPERATURE (COOLER EWT-LWT)

Fig. 4 - Cooling Return W a t e r Reset

40

8 9 IO

0

10 -

Y-

8-

?-

18

16

2-

I -

O-

8

6

Temperature Reset Based on External Temperature - If desired, temperature reset can be based on an external temperature, such as space or outdoor-air temperature. This requires a thermistor (TlO, Part No. 30GB660002) located in the space or outdoor air and wired to terminals as follows

(also see Field Wiring section on page 71):

4 in/4 out

Module - 57-15 and J7-16.

At the field configuration step, select external temperature reset by entering q when CRTYP 0 appears. Then enter set points as described previously in Example 5. See

Fig. 5.

Temperature Reset Based on 4-20 mA Signal- If desired, temperature reset can be based on a 4-20 mA signal. For proper connections, refer to Field Wiring section on page

71 and Fig. 6.

At the field configuration step, select 4-20 mA reset by entering q when CRTYP 0 appears. Then enter set points as described previously in Example 5. See Fig. 7,

Demand Limit, 2-Stage Switch Control - This control has been designed to accept demand limit signals from a building load shedding control. The demand limit function provides for 2 capacity steps. The keypad is used to set the 2 demand limit set points, which range from 100 to 0% of capacity. Capacity steps are controlled by 2 field-supplied relay contacts connected to the designated chiller terminals.

(See Field Wiring section on page 7 1 and Fig. 6.)

Example 6 - Changing Reset Type

To change type of reset, first log on as shown in

Table 11. Also refer to Set Point Function section, page 39, for information on entering reset set points using reset feature.

KEYPAD

ENTRY

DISPLAY

RESPONSE

FLD CFG

C S P T Y P 0

CRTYP 0

CRTYP 1

CRTYP 2

CRTYP 3

CRTYP 0

COMMENTS

F i e l d c o n f i g u r a t i o n s u b f u n c t i o n o f s e r v i c e f u n c t i o n

S c r o l l p a s t s i n g l e c o o l i n g set point

No reset has been s e l e c t e d

Return water temperature reset is selected and activated

Reset type is changed to space or outdoor-air temperature reset and activated

Reset type is changed to

4-20 mA signal reset and activated

Reset is deactivated

RESET REFERENCE

TEMP

ERATUR

E

(OUTDOOR AIR 1

OR

SPACE TEMP

Fig. 5 - Cooling External Temperature Reset

4 1

n

P O I N T NUMBER OF

FIRST

CHANNEL

--e-------1-

__-----a ---mm-

--

EKE

LIMIT

(ALARM C O D E 3 1 2

(MODE 91

_------

__---- - -

___---c---

_ _ - - - - .

---se

----

D

A

B d

H c 4

4 nw/4 OUJJU

d

In AOt

= RET

P W R

I z

“1

r A O +

DO+

- - - - - _ - - - - - - - -

‘-+p--------

(MODE 71

----

----__e-

RFt!EF

(ALARM COOE 21) 301

(MODE El f

__----a-

__----

LB---------

- -

LEGEND

C O M M - Communications Bus

PWR

- P o w e r

SW

- Switch

N O T E : F o r s p e c i f i c c o n n e c t i o n p o i n t s , see Fig. 24 - 29.

Fig 6 - 4 IN/4 OUT Options Module Wiring for Reset, Demand Limit, an! Dual Set Point

Table 11 - Service Functions

To view and modify configurations, the password must be entered under the log on subfunction.

SUB-

F U N C T I O N

I

K E Y F A D

E N T R Y

DISPLAY

COMMENT

P A S S W O R D

Enter

Password/

Disable Password

LOGGED ON Logged On

NOTE: Configurations may be modified at this time. When finished viewing and/or modifying configurations, log out as follows:

L O G G E D O N

L O G O F F

EXIT LOG

V E R S I O N x x x x x x x x

X

Disable Password

Protection

Logged Off/

Enable Password

Protection

Software

Information

Version No of Software

Language Options

To use Demand Limit, first enable loadshed, then enter demand limit set points. See Example 7A. Closing the first stage demand limit contact puts unit on the first demand limit level, that is, the unit does not exceed the percentage of capacity entered as demand limit stage 1. Closing contacts on second-stage demand limit relay prevents unit from exceeding capacity entered as demand limit stage 2. The demand limit stage that is set to the lowest demand takes priority if both demand limit inputs are closed.

The demand limit function must be enabled in order to function and may be turned off when its operation is not desired. The demand limit relays can, in off condition, remain connected without affecting machine operation.

-Demand Limit, 4-20 mA Signal - The controls can also accept a 4-20 mA signal for load shedding. Input for the signal are terminals shown below:

Externally powered (loop isolator required)

Positive lead to 57-5 - 4 In/4 Out Module

Negative lead to 57-6 - 4 In/4 Out Module

Internally powered

Positive lead to J7-6 - 4 In/4 Out Module

Negative lead to 57-7 - 4 In/4 Out Module

See Field Wiring section on page 71 and Fig. 6.

At field configuration step, select 4-20 mA loadshed by entering q when the LSTYP 0 display appears. See

Example 7B. Then enter set points as follows. In this example, set points are coordinates of the demand limit curve shown in Fig. 8.

42

Q

16

8

6

0

0

Example 7A - Using Demand Limit

(First Log On as Shown in Table 11)

KEYPAD

ENTRY

DISPLAY

RESPONSE

FLD CFG

ERTYP 0

LSTYP 0

L S T Y P 1

DEMAND

DLSl 100

DLSl 60

D L S 2 1 0 0

DLS2 40

COMMENTS

Field configuration subfunction of service function

Scroll past other elements i n t h e s u b f u n c t i o n

Loadshed is not enabled

Loadshed is now enabled for 2-stage switch control

Demand Limit set points subfunction of set point f u n c t i o n

Loadshed 1 currently set a t 1 0 0 %

Loadshed reset to 60%

Loadshed 2 currently set a t 1 0 0 %

Loadshed 2 reset to 40%

To Disable Demand Limit:

KEYPAD

ENTRY

DISPLAY

RESPONSE

FLD CFG

E R T Y P 0

L S T Y P 1

L S T Y P 0

COMMENTS

I

Field configuration subf u n c t i o n o f s e r v i c e f u n c t i o n

Scroll past other elements i n t h e s u b f u n c t i o n

Loadshed is enabled for

2-stage switch control

Loadshed is now disabled

NOTE: Select 3 for Carrier comfort Network (CCN) load limiting

Select 4 for CCN demand limiting.

16 18

2 4 6 8

IO

12 14

RESET REFERENCE SIGNAL (4 -20 MA INPUT)

Fig. 7 - 4-20 mA Cooling Temperature Reset

Example 7B - Using Demand Limit (4-20 mA)

(First Log On As Shown in Table 11)

KEYPAD

ENTRY ppiq

Cl

MH

DISPLAY

RESPONSE

FLD CFG

E R T Y P 0

LSTYP 0

L S T Y P 2

DEMAND

D M A X 1 0 0

D M A X 9 0

RMAX 20

R M A X 1 5

DMIN 0

DMIN 20

RMIN 4

RMlN 6

COMMENTS

F i e l d c o n f i g u r a t i o n s u b f u n c t i o n of service function

Scroll past other elements in t h e s u b f u n c t i o n

Loadshed is not enabled

Loadshed is now enabled for 4-20 mA signal control

D e m a n d L i m i t s e t p o i n t s

Maximum demand limit is 100%

Maximum demand limit is 90%

Maximum demand limit reference is 20 mA

Maximum demand limit reference is 15 mA

Minimum demand limit is 0%

Minimum demand limit is 20%

Minimum demand limit reference is 4 mA

Minimum demand limit reference is 6 mA

2 0

4 3

M A X D E M A N D

KIMAX)

= 90

Reading and Changing Time Displav - Time is entered and displayed in 24-hour time. The day of the week is entered as a number.

1 = Mon, 2 = Tue, 7 = Sun, etc.

m Kev is used as the colon when entering time. See Ex-

I ample 8.

Example 8 - Setting Time of Day and

Day of Week

KEYPAD

ENTRY

DISPLAY

RESPONSE

T I M E

MON 1600

TUE 13 05

JAN 01 90

APR 15 90

COMMENTS

T i m e d i s p l a y s u b f u n c t i o n o f s e t p o i n t f u n c t i o n

Current setting is

Monday, 4:00 p.m

New setting of

Tuesday, I:05 p m is entered and displayed

Current date is

Jan. 1, 1990

New setting

A p r i l 15, 1990 is entered and displayed

SERVICE FUNCTION - This function allows the technician to view and input configuration data. Factory configuration data, field configuration data and service configuration data may be viewed or entered through the keypad and display module. See Table 9 for a complete listing of configurable items. Whenever a processor module is replaced in the field, the complete list of configuration codes must be entered.

DEMAND

LlMlT SIGNAL

(4-20

MA INPUT)

Fig. 8 - 4-20 mA Demand Limiting

Logging On/Longing Off - The service function is password protected. Therefore, to gain entry to this function, allows the technician to view, change or enter configuration codes. To log off, perform the following keystrokes: word protected.

Software Information - Fi F/VI displays the version number of the software that resides in the processor module. Press m a second time to display the language options that are available in the field configuration group.

Table 11 s

Factorv Configuration Codes -mF[ allows entry into the factory configuration subfunction. Under this subfunction, there are 6 groups of configuration codes that are downloaded at the factory. Each group is made up of 8 digits. If processor module is replaced in the field, these 6 groups of configuration codes must be entered through the keypad and display module. Factory configuration codes (groups 1 through

6) that apply to the particular Flotronic’” II chiller being serviced are found on a label diagram located inside the control box cover. See Table 12 for a summary of factory configuration subfunction keystrokes.

44

Table 12 - Factory Configuration Keystrokes

To change a configuration enter the new configuration and press q while on the correct configuration.

S U B -

F U N C T I O N

3 FACTORY

C F G

DISPLAY

F A C T CFG

COMMENTS

F A C T O R Y

CONFlGURATlON

C O D E S

CJz;;g;ration

x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x

Configuration

C o d e 3

Configuration

C o d e 4

5 %FE

S R V C F G x x x x x x x x x x x x x x x x

S E R V I C E

CONW;;T’ON

Adiustable Field Configurations - After logging on, press ri H to enter subfunction. The subfunction allows operation of the chiller to be customized to meet the particular needs of the application. The chiller comes from the factory preconfigured to meet the needs of most applications.

Each item should be checked to determine which configuration alternative best meets the needs of a particular application. See Table 13 for factory loaded configuration codes and alternative configurations.

If processor module is replaced, the replacement module is preloaded with factory default configuration codes. Each configuration code must be checked and, if necessary, reconfigured to meet needs of the application. See

Table 13 for pre-loaded service replacement configuration codes.

Service Configuration Codes - Press r;lH to enter the service configuration subfunction. The first 2 items under this subfunction are 2 groups (8 digits each) of configuration codes that are downloaded at the factory. If processor module is replaced in the field, the 2 groups of configuration codes must be entered through the keypad and display module. The 2 groups of configuration codes (groups 7 and

8) that apply to the unit being serviced can be found on a label diagram inside the control box cover. See Table 12 for keystroke information to enter configuration codes 7 and 8.

SCHEDULE FUNCTION - This function provides a means to automatically switch chiller from an occupied mode to an unoccupied mode, When using schedule function, chilled water pump relay must be used to switch chilled water pump on and off. Connections for chilled water pump relay are:

TB3-3 and TB3-4 (040-210 and associated modular units) or TB5-3 and TB5-4 (225, 250, and 280 units). The chilled water pump relay starts chilled water pump but compressors do not run until remote chilled water pump interlock contacts are between TB6-1 and TB4-2 on 30GN040-210 and associated modular units, or between TB5-1 and TB5-2 on 3OGT225, 250, and 280 Flotronic” units are closed and leaving chilled water temperature is above set point. If a remote chilled water pump interlock is not used, the first compressor starts (upon a call for cooling) approximately one minute after chilled water pump is turned on.

45

Table 13 - Adjustable Field Configurations

FIELD CONFlGURATlON

ITEM AND CODES

FACTORY

CONFF$ikTlON

CCN element address

(Entered by CCN Technician)

CCN Bus Number

(Entered by CCN Technician)

CCN Baud Rate

(Entered by CCN Technician)

Cooler Fluid Select

1 = Water (38 to 70 F

[3.3 to 21 C] Set Point)

2 = Medium Brine (15 to 70 F f-9 to 21 C] Set Point)

Display Unit Select

0 = English

1 = Metric SI

Display Language Select

1 = English

No. Circuit A Unloaders

0 = No Unloaders

1 = One Unloader

2 = Two Unloaders

No. Circuit B Unloaders

0 = No Unloaders

1 = One Unloader

2 = Two Unloaders

Hot Gas Bypass Select

0 = N o V a l v e

Loading Sequence Select

1 = Equal Circuit Loading

2 = Staged Circuit Loading

Lead/Lag Sequence Select

1 = Automatic

Oil Pressure Switch Select

0 = Not Used

1 = Air Cooled

Head Pressure Control Type

0 = Not Used

1 = Air Cooled

Head Pressure Control Method

1 = EXV Controlled

2 = Set Point Control for

Both Circuits

3 = Set Point Control for

Circuit A; EXV Control for Circuit B

4 = Set Point Control for

Circuit B; EXV Control for Circuit A

C o o l i n g Set Point

Control Select

0 = Single Set Point Control

1 = External Switch

Controlled Set Point

2 = Clock Controlled

Set Point

Cooling Reset

0 = No Reset

Control Select i = Return Fluid Reset

2 = External Temperature

Reset -

3 = 4-20 mA Controlled

Reset

External Reset Sensor Select

0 = Thermistor Connected to

O p t i o n s M o d u l e

1 = Obtained Through CCN

Demand Limit Control Select

0 = No Demand Limiting

1 = Two External Switch Input

2 = External 4-20 mA Input

3 = CCN Load Limiting

(Multi-Unit)

4 = CCN Loadshed Interface

Ramo Load Select

~P@os~dol~ntrol)

1 = Enabled

Cooler Pump Interlock Select

0 = No Interlock

1 = With Interlock

Cooler Pump Control Select

0 = Not Controlled

1 = ON/OFF Controlled

EE

L E G E N D

- Carrier Comfort Network

- Electronic Expansion Valve

*And associated modular units

001

0 0 0

9 6 0 0

= Standard Models

I = Brine Models

0

I = 30GN190-HO*;

= 30GN040-170*

) =

30GT225,250,280

30GN040-070,

190-210';

30GT225,250,280

= 30GN080-170*

0

0

0

0

0

0

SERVICE

IEPLACEMENT

C O D E

001

0 0 0

9 6 0 0

1

1

0

0

0

1

0

0

0

1

1

0

0

0

0

0

0

0

The schedule function can be programmed for inactive, single set point, or dual set point operation.

When schedule is configured for inactive, chilled water pump relay remains energized continuously but is not used since chiller is usually controlled by remote chilled water pump interlock contacts.

When unit is configured for single set point operation, chilled water pump relay is energized whenever chiller is in occupied mode regardless of whether chiller is running. When chiller is in unoccupied mode, chilled water pump relay is not energized.

When unit is configured for dual set point, chilled water pump relay is energized continuously, in both occupied and unoccupied modes. Occupied mode places occupied chilled water set point into effect; unoccupied mode places unoccupied chilled water set point into effect.

The schedule consists of from one to 8 occupied time periods, set by the operator. These time periods can be flagged to be in effect or not in effect on each day of the week. The day begins at 00 .OO and ends at 24.00. The machine is in unoccupied mode unless a scheduled time period is in effect, If an occupied period is to extend past midnight, it must be programmed in the following manner: occupied period must end at 24:OO hours (midnight); a new occupied period must be programmed to begin at 0O:OO hours.

NOTE: This is true only if the occupied period starts at

0O:OO (midnight). If the occupied period starts at a time other than midnight, then the occupied period must end at

0O:OO hours (midnight) and new occupied period must be programmed to start at 0O:OO in order for the chiller to stay in the occupied mode past midnight.

The time schedule can be overridden to keep unit in occupied mode for one, 2, 3 or 4 hours on a one-time basis.

See Example 9.

All subfunctions of schedule function are password protected except the override subfunction, 17 b[ . Password entry into subfunctions f;l b[ through m m b[, is done through service function. See page 44, logging on/ logging off.

Figure 9 shows a schedule for an office building with the chiller operating on a single set point schedule. The schedule is based on building occupancy with a 3-hour off-peak cool-down period from midnight to 3 a.m. following the weekend shutdown. To learn how this sample schedule would be programmed, see Example 9.

NOTE: This schedule was designed to illustrate the programming of the schedule function and is not intended as a recommended schedule for chiller operation.

Example 9 - Using

the

Schedule Function

DISPLAY

O V R D 0

O V R D 3

No schedule override in effect

3 hours override in effect

Override cancelled

O V R O 0

C L O C K 0

C L O C K 1

C L O C K 6 5

Schedule function is inactive

Schedule function is enabled through local unit clock

Schedule function is enabled throuah CCN clock 65

PERIOD 1

Define schedule period 1

Start of occupied time

For this example, first period should stat-t here

/;tntnnr$ht) so no entry

UN0 00.00

Start of unoccupied time

(end of period) For this

&xampl& period 1 should end at 3:00 a m.

Period 1 ends at 3:00 a m

M O N N O

M O N Y E S

TUE YES

T U E N O

Monday is now flagged no for oeriod 1 To out oeriod I into’ effect on M&day,

Monday must be flagged

Yes

Monday is now fla period 1 to be in e a ged for ect

For this example, period 1 is to be in effect on Monday only All other days must be checked to be sure that thev are flagged no. If any day ii flagged yes, change to no

Tuesday is now flagged no for period 1

P E R I O D 2 Define schedule period 2 occ 00 00 Start of occupied time

C$uo$e;;me will start occ 7 00

UN0 00.00

UN0 18 00

M O N N O

MON YES

T U E N O

TUE YES

W E D Y E S

W E D N O

Start of unoccupied time

(end of period) For this example, period 2 should end at 18:00 (6:00 p m )

Period 2 ends at 18:OO

(6:00 p m )

Monday is now flagged no for period 2 To put period 2 into effect on Monday,

Monday must be flagged yes

Monday is now flagged for period 2 to be in effect

Tuesay is now flagged no for period 2 To put period 2 into effect on Tuesday,

Tuesday must be flagged yes

Tuesday is now flagged for period 2 to be in effect

For this example, period 2 is to be in effect only on

Monday and Tuesday

All other days must be checked to be sure that they are flagged no. If a day is flagged yes, change to no

Wednesday is now flagged no for period 2

CCN - Carrier Comfort Network

Example 9 continued next page.

4 6

Example 9 - Using the Schedule Function (cant)

KEENYTPRAYD

PROGRAMMING PERIOD 3:

I

D I S P L A Y

COMMENT

P E R I O D 3 occ 00 a0

Define schedule period 3

Start of occupied l i m e

Tyo$e;;rne will start occ 7 00

UN0 00 00

UN0 21 30

M O N N O

Start of unoccupied time

(end of period 3). For this example, period 3 should end at 21:30 (9:30 p m )

Period 3 ends at 22:30

(9:30 p m )

Check to be sure that

Monday and Tuesday are flagged for period 3

TUE NO

W E D N O

W E D Y E S

T H U R N O

Wednesday is flagged no, change to yes

W e d n e s d a y i s n o w flagged yes for period 3

Check to be sure that all other days are flagged no

FRI NO

SAT NO

S U N N O

Period 4 and 5 can be programmed in the same manner, flagging Thursday and Friday yes for period 4 and Saturday yes for period 5 a For this example, periods 6, 7, and 8 are not used: they should be programmed OCC 00.00, UN0

00.00.

NOTE: When a day is flagged yes for 2 overlapping periods, occupied time will take precedence over unoccupied time. Occupied times can overlap in the schedule with no consequence.

To extend an occupied mode beyond its normal termination for a one-time schedule override, program as shown below:

Holidav Schedule - Press 171 ri b[ to schedule up to

30 holiday periods. All holidays are entered with numerical values. First, the month (01 to 12), then the day (01 to 3 l), then the duration of the holiday period in days.

Examples: July 24 is 07.04.01.

Dee 25 - 26 is 12.25.02

If any of the 30 holiday periods are not used, the display shows NEW.

See Example 10.

Example 10 - Holiday Schedule Function

E N T E R

D I S P L A Y

H O L I D A Y

JAN01 02 (Includes Jan Ist and 2nd)

APR17 01 (Includes April 17th)

MAY21 01 (Includes May 21 st)

JUL03 01 (Includes July 3rd)

JULO4 01 (Includes July 4th)

SEP07 01 (Includes Sep 7th)

NOV26 02 (Includes Nov 26th and 27th)

DEC24 02 (Includes Dee 24th and 25th)

DECBO 02 (includes Dee 30th and 3lst)

N E W

MAY25 01 (Includes May 25th)

N E W

N E W

N E W

N E W

NEW (30TH HOLlDAY)

NEW indicates a holiday that has not been assigned yet.

YEC SAT IlJh

-

#30-G3 v

oo-

I -

2 -

3 -

4 -

5 -

6t-

8 -

9 -

IO -

II -

I2 -

I3 -

14 -

I5 -

I6 -

I7 -

18 -

1 9 -

20 -

21 -

PERIOD

1 I

‘EYo[

‘ERIO

3 m OCCUPIED

-

I UNOCCUPIED

Fig. 9 - Sample Time Schedule

47

TROUBLESHOOTING

The FlotronicTY II control has many features to aid the technicians in troubleshooting a Flotronic II Chiller. By using keypad and display module and status function, actual operating conditions of the chiller are displayed while unit is running. Test function allows proper operation of compressors, compressor unloaders, fans, EXVs and other components to be checked while chiller is stopped. Service function displays how configurable items are configured. If an operating fault is detected, an alarm is generated and an alarm code(s) is displayed under the subfunction m I;;;;] , along with an explanation of the fault. Up to 5 current alarm codes are stored. For checking specific items, see Table 9.

Checking

Display

Codes

- To determine how machine has been programmed to operate, check diagnostic information (( w ) and operating mode displays (/ Fi ).

If no dismay annears, follow procedures in Control Modules section+onlpage 64. If display is working, continue as follows:

1. Note all alarm codes displayed, F\ bi .

2. Note all operating mode codes displayed, MH .

3. Note leaving chilled water temperature set point in effect and current leaving water temperature, MFI .

If machine is running, compare the “in effect” leaving water temperature set point with current water temperature. Remember, if reset is in effect, the values may be different because machine is operating to the modified chilled water set point, If current temperature is equal to set point, but set point is not the one desired, remember that if dual set point has been selected in the schedule function, there are 2 set points to which the machine can be operating. Check the programming of schedule function to see if occupied or unoccupied set point should be in effect.

Unit Shutoff -

To shut unit off, move LOCAL/

ENABLE-STOP-CCN Switch to STOP position. Any refrigeration circuit operating at this time continues to complete the pumpout cycle. Lag compressors stop immediately, and lead compressors run to complete pumpout.

Complete Unit Stoppage

- Complete unit stoppage can be caused by any of the following conditions:

1

1. Cooling load satisfied

2. Remote ON/OFF contacts open

3. Programmed schedule

4. Emergency stop command from CCN

5. General power failure

6. Blown fuse in control power feed disconnect

7. Open control circuit fuse

8. LOCAL/ENABLE-STOP-CCN switch moved to STOP position

9. Freeze protection trip

10. Low flow protection trip

11. Open contacts in chilled water flow switch (optional)

12. Open contacts in any auxiliary interlock. Terminals that are jumpered from factory are in series with control switch. Opening the circuit between these terminals places unit in stop mode, similar to moving the control switch to STOP position. Unit cannot start if these contacts are open. If they open while unit is running, unit pumps down and stops.

13. Cooler entering or leaving fluid thermistor failure

14. Low transducer supply voltage

15. Loss of communications between processor module and other control modules

16. Low refrigerant pressure

Single Circuit Stoppage

- Single circuit stoppage can be caused by the following:

1 Low oil pressure in lead compressor

2. Open contacts in lead compressor high-pressure switch

3. Low refrigerant pressure

4. Thermistor failure

5. Transducer failure

6. Ground fault in lead compressor indicator (indicator is field-supplied on 040-060, 070 [60 Hz], 080- 110, and associated modular units)

7. High suction superheat

8. Low suction superheat

9. Lead compressor circuit breaker trip+ Stoppage of one circuit by a safety device action does not affect other circuit. When a safety device trips on a lead compressor, circuit is shut down immediately and EXV closes.

10. Ground fault for any circuit compressor (130-210,225,

250, 280, and associated modular units).

Lag Compressor Stoppage

- Lag compressor stoppage can be caused by the following:

1, Open contacts in high-pressure switch

2. Compressor ground fault (indicator is field-supplied on

040-060, 070 [60 Hz], 080- 110, and associated modular units)

3. Compressor circuit breaker trip

4. Not required to run to meet cooling load requirement

If stoppage occurs more than once as a result of any of the above safety devices, determine and correct the cause before attempting another restart.

Restart Procedure -

After cause for stoppage has been corrected, restart is either automatic or manual, depending on fault. Manual reset requires that LOCAL/ENABLE-

STOP-CCN switch be moved to STOP position, then back to original operating position. Some typical fault conditions are described below. For a complete list of fault conditions, codes, and reset type, see Table 14.

POWER FAILURE EXTERNAL TO THE UNIT - Unit restarts automatically when power is restored.

Typical Stoppage Faults and Reset Types

Chilled Water, Low Flow

Chilled Water, Low Temperature

Chilled Water Pump Interlock

Control Circuit Fuse Blown

High-Pressure Switch Open

Low Refrigerant Pressure

Low Oil Pressure

Discharne Gas Thermostat Open

Manual reset

Auto reset first time, manual if repeat

Manual reset

Unit restarts automatically when power is restored

Manual reset

Auto reset first time, then manual if within same day

Manual reset

Manual reset

48

Alarm Codes -

Following is a detailed description of each alarm code error and possible cause. Manual reset of an alarm is accomplished by moving LOCAWENABLE-

STOP-CCN Switch to STOP position, then back to LO-

CAL or CCN position. See Table 14 for listing of each alarm code.

Code 0

No alarms exist

Codes 1 - 8 Compressor failure

If DSIO-LV or -EXV relay module control relay feedback switch or signal is sensed as open during operation of a compressor, microprocessor detects this and stops compressor, energizes alarm light, and displays a code of I, 2,

3, 4, 5, 6, 7, or 8 depending on the compressor. Compressor locks off; to reset, use manual reset method.

If lead compressor in a circuit shuts down, the other compressors in the circuit stop and lock off. Only the alarm mode for lead compressor is displayed.

The microprocessor is also programmed to indicate compressor failure if feedback terminal on DSIO-LV or -EXV

53 terminal strip receives voltage when compressor is not supposed to be on.

Table 14 - Alarm Codes

DISPLAY

1

0

2 , 3 , 4

5

6, 7, 8

9

1 0

1 9

2 0

2 1

2 5

2 6

2 7

2 2

2 3

2 4

2 8

2 9

3 0

31

3 2

3 3

3 4

3 5

3 6

3 7

3 8

3 9

4 0

4 1

4 2

4 3

4 4

4 5

4 6

4 7

D E S C R I P T I O N

No Alarms Exist

Compressor Al failure

Compressor A2, A3, A4 failure

Compressor Bl failure

Compressor B2; 83, 84 failure

Leaving water thermistor failure

Entering water thermistor failure

Compressor Al sensor failure

Compressor Bl sensor failure

Reset thermistor failure

Discharge pressure transducer failure, circuit A

Discharge pressure transducer failure, circuit B

Suction pressure transducer failure, circuit A

Suction pressure transducer failure, circuit B

Oil pressure transducer failure, circuit A

Oil pressure transducer failure, circuit B

Transducer supply voltage low

Interlock switch oaen

4-20 mA reset input failure

4-20 mA demand limit failure

Loss of communication with DSIO-LV

Low refrigerant pressure circuit B oil pressure circuit A oil pressure c i r c u i t B

Cooler freeze protection

Low cooler water flow

Low suction temperature circuit A

Low suction temperature circuit B

High suction superheat circuit A

High suction superheat circuit B

4 8

4 9

50

5 1

5 2

Low suction superheat circuit A

Low suction superheat circuit B

Illegal configuration

Initial configuration required

Emergency stop by CCN command

ES

L E G E N D

- Compressor Protection Control Module

- Power Supply

ACTION TAKEN

B Y C O N T R O L

-

Circuit A shut down

Compressor shut down

Circuit B shut down

Compressor shut down

Unit shut down

Unit shut down

Circuit A shut down

Circuit B shut down

Normal set point used

Circuit A shut down

Circuit B shut down

Circuit A shut down

Circuit B shut down

Circuit A shut down

Circuit B shut down

Unit shut down

Unit shut down

Normal set point used

Demand limit ignored

Unit shut down

Loss of communication with DSIO-EXV

Loss of communication with 4 In/4 Out module

Not used

Low refrigerant pressure circuit A

I

Unit shut down

Unit shut down

-

Circuit A shut down

Circuit B shut down

Unit shut down

Unit shut down

C K T

PUMPDOWN

-

N o

N o

Yes

-

N o

Yes

Yes

N o

N o

N o

N O

N o

N o

N o

N o

N o

Yes

N o

Yes

Yes

Yes

Yes

Yes

N o

N o

N o

N o

N o

N o

N o

N o

-

Manual

Auto.

A u t o

A u t o

Auto.

Auto.

A u t o

A u t o

M a n u a l

A u t o

A u t o

Auto.

Manual

Manual

Manual

A u t o

A u t o

A u t o

A u t o

A u t o

I

A u t o

A u t o

*

-

*

Manual

M a n u a l

Manual

Manual

Manual

Manual

PROBABLE CAUSE

-

High-pressure switch trip, discharge gas thermostat trip, or wiring error

CPCS Ground Fault Protection

Thermistor or transducer failure or wiring error.

Transducer failure or wiring error

Unit voltage low or PSI faulty

Chilled water pump inoperative

I

Wiring error or improper or faulty module address code

-

Low refrigerant charge, plugged filter drier, faulty EXV

Low refri erant charge, plugged filter drier.

~, fau tv EXV

3

Faulty EXV, transducer, or thermistor

Faultv EXV, transducer, or thermistor.

Low oil level, circuit breaker trip, faulty EXV, crankcase heater, or Pressure Transducer

Low oil level, circuit breaker trip, fautty EXV, crankcase heater, or oressure transducer

Low water flow or faulty thermistor

Chilled water pump failure or faulty thermistor

Faulty EXV or thermistor

Circuit A shut down after 10 minutes

Circuit B shut down afler 10 minutes

Circuit A shut down

N o

N o

M a n u a l Faulty EXV or thermistor

Circuit B shut down

Circuit A shut down

Circuit 6 shut down

Unit cannot start

Unit cannot start

Unit shut down

Yes

Yes

Yes

Yes

-

-

Yes

Manual

Manual

M a n u a l

Manual

Manual

M a n u a l

C C N

I

Low charge, faulty EXV or thermistor, or plugged filter drier

Low charge, faulty EXV or thermistor, or plugged filter drier.

Faulty EXV or thermistor

Faultv EXV or thermistor

Configuration error

Configuration omitted

Network command.

*Reset automatic first time, manual if repeated same day

49

Possible causes of failure:

1.

High-Pressure Switch Open - High-pressure switch for each compressor is wired in series with 24-v power that energizes compressor control relay. If high-pressure switch opens during operation, compressor stops. This is detected by microprocessor through the feedback terminals.

3 .

4.

5 .

6.

DSIO-LV or DSIO-EXV Module Failure - If a DSIO-LV relay module relay fails open or closed, microprocessor detects this, locks compressor off and indicates an error.

Wiring Errors - If a wiring error exists causing CPCS,

CR, or feedback switch not to function properly, microprocessor indicates an error.

Processor (PSIO) Failure - If hardware that monitors feedback switch fails, or processor fails to energize relay module relay to on, an error may be indicated.

NOTE: The control does not detect circuit breaker failures. If a circuit breaker trips on lead compressor in a circuit, a low oil pressure failure is indicated. On the other compressors, no failure is indicated.

Ground Fault Module on 130-2 10, 225, 250, 280, and associated modular units (CGFA or CGFB) Open - Module contacts are in lead compressor circuits, but ground fault could be in any compressor in affected circuit.

Ground fault of any 040-l 10 and associated modular unit compressor (field-supplied accessory on 040-060 and 070,

60 Hz units; standard on 070, 50 Hz and 80-l 10 and associated modular units) will cause a trip.

Checkout Procedure - Shut off main power to unit. Turn on control power, then step through subfunction MFi to proper compressor number (i.e., failure code 5 is compressor Bl). Next, energize the step. If step works correctly, then failure code is caused by: l

HPS (high-pressure switch) open l

Misplaced feedback wire from 54 and J5 terminals

0 Ground wire and 24-v feeds reversed on one or more points on 53

Compressor Alarm Circuit

- For compressor Al alarm circuit, processor closes contacts between 54 terminals 2 and 3 to start compressor. See Fig. 10A - 10D. Safeties shown to left of 54 must be closed in order for power to reach compressor control relay, and the feedback input terminals on J3.

Failure of power to terminal 1 on 53, when contacts between 2 and 3 on J4 should be closed, causes a code 1 alarm.

Terminal 2 on 53 is the other leg of the compressor Al feedback channel. It is connected to the 24-v common.

NOTE: Similar connections for each compressor can be lowed on the unit wiring diagrams located on the unit.

fol-

Code 9

Leaving water thermistor failure

Code 10

Entering water thermistor failure

If temperature measured by these thermistors is outside range of -40 to 240 F (-40 to 116 C), unit shuts down after going through a normal pumpout. Reset is automatic if temperature returns to the acceptable range, and unit start-up follows normal sequence. Cause of fault is usually a bad thermistor, wiring error, or loose connection.

Code 19

Code 20

Compressor Al suction sensor failure

Compressor Bl suction sensor failure

On units with thermistors, if temperature measured by these thermistors is outside the range of -40 to 240 F (-40 to 116 C), affected circuit shuts down after going through a normal pumpout. Other circuit continues to run. Reset is automatic if temperature returns to the acceptable range,

50 and circuit start-up follows normal sequence. Cause of thisfault is usually a bad thermistor, wiring error or loose connection.

On units with transducers, if the saturated suction temperature is greater than the leaving water temperature plus

10” F (5.5 C) for more than 5 minutes, the affected circuit shuts down (after going through normal pumpout). The reset is automatic if the saturated suction temperature returns to the acceptable range and start-up follows the normal sequence. Cause of this fault is usually a bad transducer, a wiring error, or a loose connection.

Code 21

Reset thermistor failure (applies only to installations having external temperature reset)

If temperature measured by this thermistor is outside range of 40 to 240 F (-40 to 116 C), reset function is disabled and unit controls to normal set point. If temperature returns to the acceptable range, reset function is automatically enabled. Cause of this fault is usually a bad thermistor, wiring error or loose connection.

Code 22

Code 23

Code 24

Code 25

Code 26

Code 27

Compressor A 1 discharge pressure transducer failure

Compressor B 1 discharge pressure transducer failure

Compressor A 1 suction pressure transducer failure

Compressor B 1 suction pressure transducer failure

Compressor Al oil pressure transducer failure

Compressor Bl oil pressure transducer failure

If output voltage of any of these transducers is greater than 5 v, affected circuit shuts down without going through pumpout process. Other circuit continues to run. Reset is automatic if output voltage returns to the acceptable range, and circuit start-up follows normal sequence. Cause of fault is usually a bad transducer or a wiring error.

Code 28 Low transducer supply voltage

If transducer supply voltage is less than 4.5 v or greater than 5.5 v, unit shuts down without going through pumpout process. Reset is automatic if supply voltage returns to the acceptable range, and circuit start-up follows normal sequence. Cause of fault is usually a faulty transformer, or primary voltage is out of range.

The voltage supplied to the processor is polarized. When checking for proper voltage supply, be sure to consider this polarity. If voltage appears to be within acceptable tolerance, check to be sure the transformer supplying PSl is not grounded. Grounding the supply transformer can result in

serious damage to the control system.

Code 29

Chilled water pump interlock switch open

(applies only if unit is configured for use with a chilled water pump interlock).

Code can occur under any of these conditions:

1. Interlock switch fails to close chilled water pump starts within o n e minute after

2. Interlock switch opens during unit operation

3. Interlock voltage is detected, but unit is not configured for interlock

4. Interlock voltage is outside its valid range

If any of these conditions occur, all compressors are disabled and, if running, shutdown occurs without pumpout.

Chilled water pump also shuts down. Reset is manual, with

LOCAL/ENABLE-STOP-CCN switch. Most probable cause of this fault is shutdown or failure of chilled water pump to start. Other possibilities are improper configuration or wiring errors.

Code 30 Reset input failure (4 to 20 mA)

Code 31 Demand limit input failure (4 to 20 mA)

These codes apply only if unit is configured for these functions. If 4-20 mA signal is less than 4 or more than

20 mA, reset or demand limit function is disabled and unit functions normally. If mA signal returns to the acceptable range, function is automatically enabled.

Code 32 Loss of communication with compressor relay module (DISO-LV)

Code 33 Loss of communication with EXV relay module (DSIO-EXV)

If communication is lost with either of these modules, unit shuts down without pumpout. This alarm resets

auto-

matically when communication is restored. The unit starts up normally after alarm condition is reset. Probable cause of condition is a faulty or improperly connected plug, wiring error, or faulty module.

Loss of communication can be attributed to a grounded transformer with a secondary voltage of 21 vat supplying the PSIO, DSIO-LV, or 4 IN/4 OUT modules; the 12.5-vat transformer supplying the DSIO-EXV module; or the

24-vat transformer supplying PS 1 for the transformers. These

transformers should not be grounded, or serious damage to

controls can result. Check to be sure the transformers are not grounded.

NOTE: If a blank PSI0 module is downloaded without being connected to the modules DSIO, this alarm is energized.

Code 34 Loss of communication with 4 In/4 Out module

This applies only if one or more of the following options are used:

0 external temperature reset l

4-20 mA temperature reset l external switch controlled dual set point l switch controlled demand limit l 4-20 mA demand limit l hot gas bypass

If communication is lost with 4 IN/4 OUT module, the unit shuts off automatically, after finishing pumpout. Reset of alarm is automatic when communication is restored. Start-up after alarm is remedied follows a normal sequence. Probable cause of condition is a faulty or improperly connected plug, wiring error, or faulty module.

Loss of communication can be attributed to a grounded transformer with a secondary voltage of 21 vat supplying the PSIO, DSIO-LV, or 4 IN/4 OUT; the 12.5vat transformer supplying the DSIO-EXV module, or the 24-vat transformer supplying PS 1 for the transformers. These transformers

should not be grounded, or serious damage to controls can

result. Check to be sure the transformers are not grounded.

Code 36 Low refrigerant pressure, Circuit A

Code 37 Low refrigerant pressure, Circuit B

If suction pressure transducer senses a pressure below set point for more than 5 minutes at start-up or more than

2 minutes during normal operation, affected circuit shuts down without going through the pumpout process. Reset is automatic when pressure reaches 10 psig above set point if there have been no previous occurrences of this fault on the same day. If this is a repeat occurrence on same day, then reset is manual, with LOCAL/ENABLE-STOP-CCN switch,

Factory configured set point is 27 psig for standard chillers and 12 psig for brine chillers.

Possible causes of fault are low refrigerant charge, faulty

EXV, plugged filter drier, or faulty transducer.

Code 38 Failure to pump out, Circuit A

Code 39 Failure to pump out, Circuit B

The pumpout process is terminated when saturated suction temperature is 10” F (5.5” C) below temperature at be-

51 ginning of pumpout, or 10” F (5.5” C) below leaving water temperature or reaches a saturated suction temperature of

-15 F (-26 C). If appropriate saturated suction temperature is not met within 3 minutes (on 2 consecutive tries}, circuit shuts down without pumpout. Reset is manual with LOCAL/

ENABLE-STOP-CCN Switch, and start-up follows normal sequence.

Possible causes for this alarm are a bad thermistor or transducer or a faulty EXV.

Code 40 Low oil pressure, Circuit A

Code 41 Low oil pressure, Circuit B

If oil pressure differential is less than set point for more than 2 minutes at start-up, or more than one minute during normal operation, affected circuit shuts down without going through pumpout process, Reset is manual with LOCAL/

ENABLE-STOP-CCN switch, and start-up follows normal sequence.

Factory configured differential oil pressure is

6 psig.

Possible causes of fault are faulty compressor, EXV, crankcase heater or transducer, refrigerant overcharge, insufficient oil charge, or tripped circuit breaker.

Code 42 Cooler freeze protection

If cooler entering or leaving water temperature is below

34 F (1.1 C) for water or more than 8” F (4.4” C) below set point for brine, unit shuts down without pumpout. Chilled water pump continues to run if controlled by chiller controls. Reset is automatic when leaving water temperature reaches 6” F (3” C) above set point, providing there has been no prior occurrence of this fault the same day. If fault has occurred previously the same day, reset is manual with

LOCAL/ENABLE-STOP-CCN switch.

Possible causes of fault are low water flow or faulty thermistor.

Code 43 Low water flow

If any compressors are operating and entering water temperature is 3” F (1.7” C) or more below leaving water temperature for more than one minute, unit shuts down without pumpout. Chilled water pump also shuts down. Reset is manual with LOCAL/ENABLE-STOP-CCN switch, and start-up follows normal sequence.

This is a suitable method for sensing low water flow because entering water thermistor is in the cooler shell and responds more quickly to compressor operation than the leaving water thermistor in the leaving water nozzle, Possible causes of fault are faulty chilled water pump, control or thermistor.

Code 44 Low cooler suction temperature, Circuit A

Code 45 Low cooler suction temperature, Circuit B

If saturated suction temperature is less than 32 F (0°C) and is 20” F (11” C) for water or 30” F (16” C) for brine or more below leaving fluid temperature, mode 14 is displayed. Unit continues to run, but additional compressors are not allowed to start, If condition persists for more than

10 minutes, fault code is displayed, and unit shuts down without pumpout. Reset is manual with LOCAL/ENABLE-

STOP-CCN switch, and start-up follows normal sequence.

Possible causes of fault are low refrigerant charge, plugged filter drier, or a faulty EXV or thermistor.

Code 46 High suction superheat, Circuit A

Code 47

High suction superheat, Circuit B

If EXV is fully open, suction superheat is greater than

75 F (42 C) and saturated evaporator temperature is less than MOP (maximum operating pressure) for more than 5 minutes, unit shuts down after normal pumpout process.

Reset is manual with LOCAL/ENABLE-STOP-CCN switch, and start-up follows normal sequence.

Possible causes of fault are low refrigerant charge, plugged filter drier, or a faulty EXV or thermistor.

Code 48 Low suction superheat, Circuit A

Code 49

Low suction superheat, Circuit B

If EXV is at minimum position, suction superheat is less than 10” F (5.5” C) or saturated evaporator temperature is greater than MOP (maximum operating pressure) for more than 5 minutes, affected circuit shuts down after going through pumpout process, Reset is manual with LOCAL/ENABLE-

STOP-CCN switch, and start-up follows normal sequence.

Possible causes of fault are faulty EXV or thermistor.

Code 50 Illegal configuration

This fault indicates a configuration error. Unit is not allowed to start. Check all configuration data and set points and correct any errors.

Code 51 Initial configuration required i2G7

This fault indicates factory configuration has not been done, and unit is not allowed to start. Refer to unit wiring label diagrams for factory configuration codes, There are 8 groups of S-digit numbers that must be entered. The first

Enter each group, then press the H key. Use the empty screen. Unit should start after factory and field configurations are correctly entered.

The usual cause of this fault is replacement of the processor module. Refer to instructions accompanying the replacement module.

Code 52 Emergency stop by CCN command.

Unit goes through normal shutdown when this command is received, and goes through normal start-up when command is cancelled.

S T A N D A R D : 040-060 50 H z

040-070 60 H z r I -

,

1 C R ’ S

[CPCS ’ Sl

S T A N D A R D : 070 50 Hz

A C C E S S O R Y : 040-060 50 H z &I

C O M M

CPCS

CR

D G T

DSIO

HPS

K

PWR

SNB

TB

TRAN

U

-

-

-

-

LEGEND

Contactor

Circuit Breaker

Communications Bus

Compressor Protection

Control Module

Compressor Contactor Relay

Discharge Gas Thermostat (Optional)

Relay Module (Low Voltage)

High-Pressure Switch

Low Vottage

P l u g

P o w e r

S n u b b e r

T e r m i n a l B l o c k

Transformer

Unloader

Fig. IOA - 24-V Safety Circuit Wiring (040-070)

52

TE7 REO

I

I

24VAC

CONTROL 5CtlEliATIC

CN5

32MP

TNANZ

w

IlEO2 21V

S E C O N D A R Y

1

]TE?

DGT

DSIO

HPS

E!

PWR

GLN

U

LEGEND

- Contactor

- Communications Bus

-

Compressor Protection Control Module

-

Discharge Gas Thermostat (Optional)

- Relay Module (Low Voltage)

- l-tigh-Pressure Switch

- Low Voltage

- Plug

- Power

- Terminal Block

- Transformer

- Unloader

Fig. 1OB - 24-V Safety Circuit Wiring (080-110 and Associated Modular Units)

53

P

CGF

EM”

E?

kL

SNB

TB

TRAN

U

LEGEND

Ground Fault Module

Communications Bus

Compressor Contactor Relay

Relay Module (Low Voltage)

High-Pressure Switch

Low Voltage

P l u g

Snubber

Terminal Block

Transformer

Unloader

Fig. IOC - 24-V Safety Circuit Wiring (130-210 and Associated Modular Units)

54

PL12-7 Poll-7

LEGEND c -

C G F -

Z” 1

D G T -

DSIO -

E X V -

H P S -

/$ ::

Contactor

Ground Fault Module

C o m m o n

Control Relay

Discharge Gas Thermostat (Optional)

Relay Module (Low Voltage)

Electronic Expansion Valve

High-Pressure Switch

Low Volta e

;b I:

TB -

P l u g

Reset Button

Terminal Board

Fig. IOD - 24-V Safety Circuit Wiring (225, 250, and 280 Units)

5 5

1.

Electronic Expansion Valve

EXV OPERATION - These valves control the flow of liquid refrigerant into the cooler. They are operated by processor to maintain a specified superheat at lead compressor entering gas thermistor (located between compressor motor and cylinders). There is one EXV per circuit. See Fig. 11.

High-pressure liquid refrigerant enters valve through bottom. A series of calibrated slots are located in side of orifice assembly. As refrigerant passes through orifice, pressure drops and refrigerant changes to a 2-phase condition

(liquid and vapor). To control refrigerant flow for different operating conditions, sleeve moves up and down over orifice, thereby changing orifice size. Sleeve is moved by a linear stepper motor. Stepper motor moves in increments and is controlled directly by processor module. As stepper motor rotates, motion is transferred into linear movement by lead screw. Through stepper motor and lead screws,

760 discrete steps of motion are obtained. The large number of steps and long stroke result in very accurate control of refrigerant flow.

The biF\ subfunction shows EXV valve position as a percent of full open. Position should change constantly while unit operates. If a valve stops moving for any reason

(mechanical or electrical) other than a processor or thermistor failure, the processor continues to attempt to open or close the valve to correct the superheat. Once the calculated valve position reaches 60 (fully closed) for 040-210 and associated modular units, 145 (fully closed) for 225,

250, and 280 units, or 760 (fully open) it remains there. If

EXV position reading remains at 60, 145 or 760, and the thermistors and pressure transducers are reading correctly, the EXV is not moving. Follow EXV checkout procedure below to determine cause.

The EXV is also used to limit cooler suction temperature to 50 F (10 C). This makes it possible for chiller to start at higher cooler water temperatures without overloading compressor. This is commonly referred to as MOP (maximum operating pressure), and serves as a load limiting device to prevent compressor motor overloading, This MOP or load limiting feature enables the 30G FlotronicT’ II chillers to operate with up to 95 F (35 C) entering water temperatures during start-up and subsequent pull-down.

STEPPER

‘ D C )

CHECKOUT PROCEDURE - Follow steps below to diagnose and correct EXV problems.

1, Check EXV driver outputs. Check EXV output signals at appropriate terminals on EXV driver module (see

Fig. 12) as follows:

Connect positive test lead to terminal 1 on EXV driver.

Set meter for approximately 20 vdc. Enter outputs subfunction of test function by pressing riF[ , then advance to EXVA test by pressing q

8 times. Press

T;ip--p-&q*

The driver should drive the circuit A EXV fully open. During next several seconds connect negative test lead to pins 2, 3, 4 and 5 in succession. Voltage should rise and fall at each pin. If it remains constant at a voltage or at zero v, remove connector to valve and recheck.

Press m H to close circuit A EXV. If a problem still exists, replace EXV driver module. If voltage reading is correct, expansion valve should be checked. Next, test

EXVB. Connect positive test lead to pin 7 and the negative test lead to pin 8, 9, 10, 11 in succession during

EXVB test.

2. Check EXV wiring, Check wiring to electronic expansion valves from terminal strip on EXV driver. See

Fig. 12.

a. Check color coding and wire connections. Make sure they are connected to correct terminals at driver and

EXV plug connections.

b. Check for continuity and tight connection at all pin terminals.

c. Check plug connections at driver and at EXVs to be sure EXV cables are not crossed.

E X V D R I V E R

BOARD - J4

I

O R I F I C E

ASSEMBLY

(INSIDE P I S T O N

SLEEVE)

Fig. 11 - Electronil c Expansion Valve (EXV)

56

T

EXV - Electronic Expansion Valve

Fig. 12 - EXV Cable Connections to

EXV Driver Module, DSIO (EXV)

3. Check resistance of EXV motor windings. Remove plug at 54 terminal strip and check resistance between common lead (red wire, terminal D) and remaining leads,

A, B , C, and E (see Fig. 12). Resistance should be

25 ohms -1- 2 ohms.

Control of valve is by microprocessor. A thermistor and a pressure transducer located in lead compressor are used to determine superheat. The thermistor measures temperature of the superheated gas entering the compressor cylinders. The pressure transducer measures refrigerant pressure in the suction manifold. The microprocessor converts pressure reading to a saturation temperature. The difference between temperature of superheated gas and saturation temperature is the superheat.

i .‘I

Because the EXVs are controlled by the processor module, it is possible to track valve position. During initial start-up, EXV is fully closed. After start-up, valve position is tracked by processor by constantly observing amount of valve movement.

The processor keeps track of EXV position by counting the number of open and closed steps it has sent to each valve. It has no direct physical feedback of valve position. Whenever unit is switched from STOP to RUN position, both valves are initialized, allowing the processor to send enough closing pulses to the valve to move it from fully open to fully closed, then reset the position counter to zero.

4. The EXV test can be used to drive EXV to any desired position. When EXV opens, the metering slots begin to provide enough refrigerant for operation at these steps: step 60 for sizes 040-210 and associated modular units, or 145 for sizes 225, 250, and 280. This is fully closed position when circuit is operating. The fully open position is 760 steps.

5. Check thermistors and pressure transducers that control

EXV. Check thermistors and pressure transducers that control processor output voltage pulses to EXVs. See

Fig, 13 for locations.

Circuit A - Thermistor T7, Suction Pressure Transducer SPTA

Circuit B - Thermistor T8, Suction Pressure Transducer SPTB a. Use temperature subfunction of the status function

(m bi ) to determine if thermistors are reading correctly.

b. Check thermistor calibration at known temperature by measuring actual resistance and comparing value measured with values listed in Tables 15 and 16.

c. Make sure thermistor leads are connected to proper pin terminals at 57 terminal strip on processor module and that thermistor probes are located in proper position in refrigerant circuit. See Fig. 14 and 15.

d. Use the pressure subfunction of the Status function

( m Fl) to determine if pressure transducers are reading correctly. Connect a calibrated gage to lead compressor suction or discharge pressure connection to check transducer reading.

e. Make sure transducer leads are properly connected in junction box and at processor board. Check transformer 5 output. Check voltage transducer 5 vdc +

.2 v.

When above checks have been completed, check actual operation of EXV by using procedures outlined in Step 5.

6. Check operation of EXV.

a. Close liauid line service valve of circuit to be checked, and run ihrough the test step ( 17 Fi ) for lead comnressor in that circuit to pump down low side of sysiem. Repeat test step 3 tcmes-to ensure all refrigerant has been pumped from low side.

NOTE: Be sure to allow compressors to run for the full pumpout period.

b. Turn off compressor circuit breaker(s). Close compressor discharge service valves and remove any remaining refrigerant from low side of system.

c. Remove screws holding top cover of EXV. Carefully remove top cover. If EXV plug was disconnected during this process, reconnect it after cover is removed.

When removing top cover, be careful to avoid damaging motor leads.

d. Enter appropriate EXV test step for EXVA or

EXVB in the outputs subfunction of the test function

(jlF[). Press-mmriH to initiate test. With cover lifted off EXV valve body, observe operation of valve motor and lead screw. The motor should turn counterclockwise, and the lead screw should move up out of motor hub until valve is fully open. Lead screw movement should be smooth and uniform from fully closed to fully open position. Press l-+$0 check open to closed operation.

If valve is properly connected to processor and receiving correct signals, yet does not operate as described above, valve should be replaced.

Operation of EXV valve can also be checked without removing top cover. This method depends on operator’s skill in determining whether or not valve is moving. To use this method, initiate EXV test and open valve. Immediately grasp EXV valve body. As valve drives open, a soft, smooth pulse is felt for approximately 26 seconds as valve travels from fully closed to fully open. When valve reaches end of its opening stroke, a hard pulse is felt momentarily. Drive valve closed and a soft, smooth pulse is felt for the

26 seconds necessary for valve to travel from fully open to fully closed. When valve reaches end of its stroke, a hard pulse is again felt as valve overdrives by 50 steps. Valve should be driven through at least

2 complete cycles to be sure it is operating properly.

If a hard pulse is felt for the 26 second duration, valve is not moving and should be replaced.

The EXV test can be repeated as required by entering any percentage from 0 ( r;l ) to 100 to initiate movement.

If operating problems persist after reassembly, they may be due to out-of-calibration thermistor(s) or intermittent connections between processor board terminals and EXV plug. Recheck all wiring connections and volta g e signals,

Other possible causes of improper refrigerant flow control could be restrictions in liquid line, Check for plugged filter drier(s) or restricted metering slots in the EXV.

Formation of ice or frost on lower body of electronic expansion valve is one symptom of restricted metering slots.

However, frost or ice formation is normally expected when leaving fluid temperature from the cooler is below

40 F. Clean or replace valve if necessary.

NOTE: Frosting of valve is normal during compressor

Test steps and at initial start-up. Frost should dissipate after 5 to 10 minutes operation in a system that is operating properly. If valve is to be replaced, wrap valve with a wet cloth to prevent excessive heat from damaging internal components.

57

MUFFLERS

C O M P R E S S O R S

I I c r

CIRCUIT B

CIRCUIT A

LEGEND

D P T - Discharge Pressure Transducer

- Oil Pressure Transducer

:ppTT

- Suction Pressure Transducer

T

- Thermistor Number

Fig. 13 - Thermistor and Pressure Transducer Locations

FILTER

D R I E R

-

J

58

A I R

VENT

: LEAVING

W A T E R / B R I N E

THERMISTOR (Tl)

C O O L E R

F L U I D

B A F F L E

ENTERING

W A T E R / B R I N E

C O N N E C T I O N

SUCTION

C O N N E C T I O N

D R A I N

L E A V I N G

W A T E R / B R I N E

C O N N E C T I O N

I

C O O L E R

TUBE

(TYPICAL)

ENTERING

W A T E R / B R I N E

T H E R M I S T O R

INLET

C O N N E C T I O N

Fig. 14 - Thermistor Locations

(Circuits A and B, Lead Compressor Only)

COUPLING

A C C E S S O R Y

JACKETED

JACKETED

C A B L E

S E N S O R

TUBE

T H E R M I S T O R

W E L L poi-i,

(~~~%~~

1

I

I

AY

F E R R U L E S

INSIDE f

3/16” (4 8) DIA 114” (6.4)

OD COUPLING

WATER-SIDE TEMPERATURE SENSOR (Tl, T2, - ALL UNITS),

(T7, T8 - 225, 250, 280)

NOTE: BEND SLIGHTLY-

FOR INSERTION

INTO WELL

(76)

(4 6)

REFRIGERANT TEMPERATURE SENSOR (T7, T8 - 040-210 AND

ASSOCIATED MODULAR UNITS)

Fig. 15 - Thermistors

59

Thermistors -

All thermistors are identical in their temperature vs. resistance performance. Resistance at various temperatures are listed in Tables 15 and 16.

LOCATION - General location of thermistor sensors are shown in Fig. 13.

Cooler Leaving Water Thermistor (Tl) - Tl is located in leaving water nozzle. The probe is immersed directly in the water. All thermistor connections are made through a %-in.

coupling. See Fig. 15. Actual location is shown in Fig. 13 and 14.

Cooler Entering Water Thermistor (T2) - T2 is located in cooler shell in first baffle space near tube bundle. Thermistor connection is made through a %-in. coupling. See

Fig. 15. Actual location is shown in Fig. 13 and 14.

Compressor Suction Gas Temperature Thermistors (T7 and

T8) - T7 and T8 are located in lead compressor in each circuit in suction passage between motor and cylinders, above oil pump. They are well-type thermistors on 040-210 and associated modular units, or ferrule-type on 225, 250, 280 units. See Fig. 13 and 14.

THERMISTOR REPLACEMENT (Tl , T2, T7, TS) (Compressor and Cooler)

Thermistors are installed directly in fluid or refrigerant circuit. Relieve all refrigerant pressure using standard refrigerant practices or drain fluid before removing.

Proceed as follows (see Fig. 15):

To replace sensors Tl, T2, T7 (225,250,280), and T8

(225,250,280)

1. Remove and discard original thermistor and coupling.

IMPORTANT: Do not disassemble new coupling.

Install as received.

I

2. Apply pipe sealant to ‘/a-in. NPT threads on replacement coupling and install in place of original. Do not use packing nut to tighten coupling. This damages ferrules (see Fig. 15).

3. Insert new thermistor in coupling body to its full depth.

If thermistor bottoms out before full depth is reached, pull thermistor back out I/s in, before tightening packing nut. Hand tighten packing nut to position ferrules, then finish tightening 19’4 turns with a suitable tool. Ferrules are now attached to thermistor which can be withdrawn from coupling for unit servicing.

To replace thermistors T7 and T8 (040-210 and associated modular units):

Add a small amount of thermal conductive grease to thermistor well. Thermistors are friction-fit thermistors, which must be slipped into receiver located in the compressor pump end.

Pressure Transducers

- T

WO

tvpes of pressure transducers are used on 30G Flotronic’” Ii*chille&: a low pressure transducer and a high pressure transducer. The low pressure transducer is identified by a white dot on the body of the transducer, and the high pressure transducer by a red dot. See Fig. 16.

Three pressure transducers are mounted on each lead compressor: 2 low-pressure transducers to monitor compressor suction pressure and oil pressure, and a high-pressure transducer to monitor compressor discharge pressure (see

Fig. 17 for exact locations on compressor). Each transducer is supplied with 5 vdc power from a rectifier which changes

24 vat to 5 vdc.

TROUBLESHOOTING - If transducer is suspected of being faulty, first check supply voltage to transducer. Supply voltage should be 5 vdc + .2 v. If supply voltage is correct, compare pressure reading displayed on keypad and display module against pressure shown on a calibrated pressure gage. If the 2 pressure readings are not reasonably close, replace pressure transducer.

r

TRANSDUCER REPLACEMENT

Transducers are installed directly in the refrigerant circuit. Relieve all refrigerant pressure using standard refrigeration practices before removing.

1. Relieve refrigerant pressure using standard refrigeration practices.

2. Disconnect transducer wiring at transducer by pulling up on locking tab while pulling weather-tight connection pfug from end of transducer. Do not pull on trans-

ducer wires.

3. Unscrew transducer from !&in. male flare fitting. When installing new pressure transducer, do not use thread sealer. Thread sealer can plug transducer and render it inoperative.

4. Insert weathertight wiring plug into end of transducer until locking tab snaps in place.

5. Check for refrigerant leaks.

-75”

l/4” SAE FEMALE FLARE

WHITE DOT-LOW PRESSURE TRANSDUCER

RED DOT -HIGH PRESSURE TRANSDUCER

SAE - Society of Automotive Engineers

Fig. 16 - Pressure Transducer

60

!

TEMP:;fTURE

-2i.b

-24.0

-23.0

-22.0

-21.0

-20.0

::: too

5:o

1 7 . 0

1 8 . 0

1 9 . 0

20.0

21.0

22.0

23.0

24.0

25.0

26.0

27.0

28.0

29.0

30.0

55.0

56.0

57.0

58.0

59.0

60.0

47.0

48.0

49.0

50.0

51.0

52.0

53.0

54.0

39.0

40.0

41.0

42.0

43.0

44.0

45.0

46.0

31 .o

32.0

33.0

34.0

35.0

36.0

37.0

38.0

7x

8:0

9.0

10.0

1 1 . 0

1 2 . 0

1 3 . 0

14.0

i5.0

1 6 . 0

62.0

63.0

64.0

65.0

66.0

67.0

68.0

69.0

- 1 8 . 0

- 1 7 . 0

- 1 6 . 0

- 15.0

- 14.0

- 1 3 . 0

- 1 2 . 0

-11.0

- 10.0

- 9 . 0

-8.0

-7.0

-6.0

-5.0

-4.0

I;.;

- l : o

0 . 0

Table

15 - Thermistor Temperature (OF) vs Resistance/Voltage Drop; Flotronic’” II

VOLTAGE

D R O P ( V )

4 8 2 1

4818

4814

4806

4.800

4793

4786

4779

4772

4764

4.757

4749

4740

4734

4724

4715

4705

4696

4.688

4676

4666

4657

4648

3547

3520

3493

3464

3437

3409

3382

3.353

3757

3729

3705

3.679

3653

3627

3600

3.575

3.323

3295

3.267

3238

3210

3 181

3152

3123

3.948

3927

3902

3.878

3854

3828

3805

3781

4125

4103

4082

4.059

4037

4017

3994

3.968

4278

4258

4241

4223

4202

4184

4.165

4145

4413

4397

4.381

4366

4348

4.330

4313

4.295

4527

4.514

4.501

4487

4472

4457

4442

4427

EEi

4'613

4602

4592

4579

4.567

4554

4540

RESISTANCE

(OHMS)

98010

20547

19960

19393

18843

18311

17796

17297

16814

16346

15892

15453

15027

14614

14214

13826

13449

33185

32176

31202

30260

29351

28473

27624

26804

26011

25245

24505

23789

23096

22427

21779

21153

55311

53526

51804

50143

48541

46996

45505

44066

42679

41339

40047

38800

37596

36435

35313

34231

94707

91522

88449

85486

82627

79871

77212

74648

72175

69790

67490

65272

63133

61070

59081

57162

1 3 0 8 4

1 2 7 3 0

12387

12053

11730

11416

11112

10816

10529

10250

9979

9717

9461

9213

8973

8739

8511

8291

8076

7868

7665

7468

7277

7091

6911

6735

6564

6399

6238

6 0 8 1

5929

868

850

832

815

798

782

765

750

734

1430

1401

1373

1345

1318

1291

1265

1240

1680

1647 t614

1582

1550

1519

1489 t 459

1214

1190

1165

1141

1118

1977

1937

1898

1860

1822

1786

1750

1715

ZE

2286

2239

2192

2147

2103

2060

2018

1 0 9 5

1 0 7 2

1 0 5 0

1 0 2 9

1 0 0 7

986

965

945

925

906

887

RESISTANCE

(OHMS)

3243

3170

3099

3031

2964

2898

2835

2773

3906

3814

3726

3640

3556

3474

3395

3318

4737

4622

4511

4403

4298

4196

4096

4000

5781

5637

5497

5361

5229

5101

4976

4855

2713

2655

2597

2542

2488

2436

VOLTAGE

D R O P ( V )

1 585

1562

1538

1 517

1496

1474

1453

1.431

1 408

1389

1369

1348

1 327

1308

1291

1 289

1 269

1 250

1230

1 211

1192

1173

1 155

1 136

1 118

1 100

1.082

f 064

1 047

1 0 2 9

1.012

0 995

0978

0 962

0945

0 929

0914

0 898

0883

0868

0853

2388

2360

2332

2.305

2277

2 251

2217

2189

2622

2593

2563

2533

2505

2.476

2447

2417

3 . 0 9 3

3.064

3034

3005

2977

2.947

2.917

2884

2857

2.827

2797

2766

2738

2708

2679

2 650

2.162

2136

2107

2080

2053

2028

2 001

1 973

1.946

1 919

1897

1870

1.846

1.822

1792

1 771

1.748

1724

1.702

1676'

1653

1 630

1 607

61

:3

89 x:

E xi

9 6

3;:

;i;

1 0 2

:::

1 0 5

1 0 6

1 2 6

127

1 2 8

1 2 9

1 3 0

1 3 1

1 2 0

1 2 1

122

1 2 3

1 2 4

1 2 5

113

1 1 4

1 1 5

1 1 6

1 1 7

1 1 8

1 1 9

2:

1 0 9

1 1 0

1 1 1

1 1 2

139

1 4 0

1 4 1

1 4 2

1 4 3

1 4 4

132

1 3 3

1 3 4

1 3 5

136

1 3 7

1 3 8

1 5 8

159

1 6 0

1 6 1

1 6 2

163

1 6 4

1 6 5

166

1 4 5

1 4 6

147

1 4 6

1 4 9

1 5 0

1 5 1

1 5 2

1 5 3

1 5 4

155

156

1 5 7

TEMPERATURE

(5

TX

;:

TZ

TI

79

EY

82 zi ii5

TEMPERATURE

F)

1 7 8

1 7 9

1 8 0

1 8 1

1 8 2

1 8 3

1 8 4

1 8 5

1 8 6

1 8 7

1 8 8

1 8 9

1 9 0

1 9 1

1 9 2

1 9 3

1 9 4

1 9 5

1 9 6

1 9 7

1 9 8

207

208

209

210

211

212

213

214

1 9 9

200

201

202

203

204

205

206

215

216

217

218

2 1 9

220

221

222

223

224

225

1 6 7

1 6 8

1 6 9

1 7 0

1 7 1

1 7 2

1 7 3

1 7 4

1 7 5

1 7 6

1 7 7

REWSTANCE

( O H M S )

5 8 1

5 7 0

5 6 1

5 5 1

5 4 2

5 3 3

5 2 4

5 1 6

5 0 8

5 0 1

4 9 4

487

7 1 9

705

690

6 7 7

6 6 3

6 5 0

6 3 8

6 2 6

6 1 4

6 0 2

5 9 1

1;:

4 6 7

4 6 1

4 5 6

4 5 0

4 4 5

4 3 9

4 3 4

4 2 9

424

4 1 9

4 1 5

4 1 0

4 0 5

4 0 1

3 9 8

350

344

338

332

325

318

311

304

3 9 1

386

382

377

372

367

361

356

297

289

282

: 2:

0526

0.520

0515

0.510

:%s

0 494

0488

0.425

0417

0 409

0401

0393

0384

0375

0366 z;;

0471

0465

0 459

0.453

0.446

0439

0432

VOLTAGE

D R O P ( V )

0.585

0579

0572

0566

0560

0554

0548

0542

0 649

0640

0632

0.623

0.615

0607

0600

0592

0 . 8 3 8

0824

0.810

0.797

0.783

0770

0758

0745

0734

0722

0.710

0.700

0.689

0678

0668

0659

TEMPERATURE

(C)

- 3 3

- 3 2

- 3 1

- 3 0

- 2 9

- 2 8

- 2 7

- 2 6

- 2 5

- 2 4

- 2 3

- 2 2

- 4 0

- 3 9

- 3 8

- 3 7

- 3 6

- 3 5

- 3 4

- 2 1

- 2 0

- 1 9

- 1 8

- 1 7

- 1 6

- 1 5

- 1 4

- 1 3

- 1 2

- 1 1

- 1 0

1;

- 7

1;

1;

- 2

- 1

0

: i z

109

3

Table 16 - Thermistor Temperature (“C) vs Resistance/Voltage Drop; Flotronic’” II

VOLTAGE

DROP (V)

4.896

Z~

4 . 8 7 4

4 . 8 6 6

4 8 5 7

4 8 4 8

4 8 3 8

4.828

4.817

4.806

4 794

4 . 7 8 2

4.769

4.755

4.740

4 725

4710

4.693

4.676

4 6 5 7

4 639

4

619

4 5 9 8

4 . 5 7 7

2.493

2.441

2.389

2337

2.286

2236

2.186

2.137

2087

2.039

1.991

2.917

2.864

2.810

2.757

2.704

2.651

2.598

2.545

3.337

3285

3234

3.181

3.129

3.076

3.023

2.970

3726

3 680

3.633

3.585

3.537

3.487

3438

3387

4.065

4026

3.986

3.945

3.903

3860

3816

3.771

4341

4310

4.278

4.245

4.211

4.176

4.140

4.103

4 554

4.531

4.507

4482

4.456

4.428

4400

4371

RESISTANCE

(Ohms)

168230

157440

147410

138090

129 410

121 330

113810

106 880

100 260

94165

88 480

83 170

78125

73 580

69 250

E 3:;

57 875

54 555

4 583

4389

4 204

4 028

3 861

3 701

3 549

3 404

3 266

3134

3 008

2 888

2 773

2 663

2 559

2 459

2 363

6 536

6 246

5 971

5 710

5 461

5 225

5 000

4 786

9485

9 044

8 627

8 231

7 855

7 499

7 161

6 840

21 163

20 079

19 058

18 094

17184

16 325

15515

14749

14026

13 342

12 696

12085

II 506

IO 959

10441

9 949

5 1 4 5 0

48 536

45 807

43 247

40 845

38 592

38 476

34 489

32 621

30 866

29 216

27 633

26 202

24 827

23 532

22313

TEMPERATURE

(Cl

46

4 7

48

6i

6 2

7 8

79

8 0

101

102 to3

104

105

106

107

1 387

1 337

1 290

1 244

1 200

1 158

1 118

1 079

1 871

1 801

1 734

1670

1609

1 550

1 493

1 439

1 041

1006

971

9 3 8

6 6 9

645

623

602

583

564

547

531

9 0 6

876

836

805

775

747

719

693

516

502

489

477

466

456

446

436

427

4 1 9

4 1 0

402

393

385

376

367

357

346

335

324

312

285

VOLTAGE

DROP (V)

1594

1553

1513

1474

1436

1.399

1.363

1.327

1.291

1.258

1.944

1898

1.852

1.807

1.763

1.719

1.677

1635

: :;;

I:160

1.129

0555

0545

0.535

0.525

0.515

0.506

0.496

0.486

0665

0648

0.632

0.617

0.603

0.590

0.577

0.566

0.476

0466

0454

0.442

0 429

0.416

0401

0386

0370

0.838

0813

0 789

0765

0743

0722

0702

0.683

: E:

1040

1012

0.984

0 949

0.920

0 892

0.865

RESISTANCE

(Ohms)

2 272

2184

62 r

. . i

-

THERMISTOR* REFRIGERANT

ENTERING TEMPERATURE

CYLINDERS

DISCHARGE

PRESSURE

TRANSDUCER*

EQUALIZER

LINE

OIL PRESSURE

TRANSDUCER*

SUCTION PRESSURE

TRANSDUCER*

SIGHT GLASS

(EACH COMPRESSOR)

Fig. 17 - Lead Compressor Transducer and Thermistor Locations

*Lead compressor only

6 3

Control Modules

Turn controller power off before servicing controls. This ensures safety and prevents damage to controller.

PROCESSOR MODULE (PSIO). 4 IN/4 OUT MODULE

(SIO), LOW-VOLTAGE TiELAY’MODULE (DSIO), AND

EXV DRIVER MODULE (DSIO) - The PSIO, DSIO and

SIO modules all perform continuous diagnostic evaluations of the condition of the hardware. Proper operation of these modules is indicated by LEDs (light emitting diodes) on the front surface of the DSIOs, and on the top horizontal surface of the PSI0 and SIO.

RED LED - Blinking continuously at a 3- to 5-second rate indicates proper operation. Lighted continuously indicates a problem requiring replacement of module. Off continuously indicates power should be checked. If there is no input power, check fuses. If fuse is bad, check for shorted secondary of transformer or for bad module. On the PSI0 module, if the light is blinking at a rate of twice per second, the module should be replaced.

GREEN LED - On a PSI0 and an SIO, this is the green

LED closest to COMM connectors. The other green LED on module indicates external communications, when used.

Green LED should always be blinking when power is on. It indicates modules are communicating properly. If green LED is not blinking, check red LED. If red LED is normal, check module address switches. See Fig. 18, Proper addresses are:

PSI0 (Processor Module) - 01 (different when CCN connected)

DSIO (Relay Module) - 19

DSIO (EXV Driver Module) - 31

SIO (4 In/4 Out Module) - 59

If

all modules indicate communication failure, check COMM plug on PSI0 module for proper seating. If a good connection is assured and condition persists, replace PSI0 module.

If only DSIO or SIO module indicates communication failure, check COMM plug on that mode for proper seating. If a good connection is assured and condition persists, replace DSIO or SIO module.

All system operating intelligence rests in PSI0 module , the module that controls unit. This module monitors conditions through input and output ports and through DSIO modules (low-voltage relay module and EXV driver module).

The machine operator communicates with microprocessor through keypad and display module. Communication between PSI0 and other modules is accomplished by a 3-wire sensor bus. These 3 wires run in parallel from module to module.

On sensor bus terminal strips, terminal 1 of PSI0 module is connected to terminal 1 of each of the other modules.

Terminals 2 and 3 are connected in the same manner. See

Fig, 19, If a terminal 2 wire is connected to terminal 1, system does not work.

In FlotronicTM II Chillers, processor module, low-voltage relay module, and keypad and display module are all powered from a common 21-vat power source which connects to terminals 1 and 2 of power input strip on each module. A separate source of 21-vat power is used to power options module through terminals 1 and 2 on power input strip. A separate source of 12.5 vat power is used to power EXV driver module through terminals 1 and 2 on power input strip.

64

Fig. 18 -

Module

Address

Selector Switch Locations

PSIO, SIO

ADDRESS

SELECTOR

PSI0

( pRocEMssOp

DSIO DSIO

(RELAY) (EXV

DRIVER)

HSIO

SIO

( L I D ) ( 4 I;W;UT

Fig. 19 - Sensor Bus Wiring

(Communications)

PROCESSOR MODULE (PSIO) (Fig. 20)

Inputs - Each input channel has 3 terminals; only 2 of the terminals are

used.

Application of machine determines which terminals are used. Always refer to individual unit wiring for terminal numbers.

Outputs

- Output is 24 vdc. There are 3 terminals, only 2 of which are used, depending on application. Refer to unit wiring diagram.

NOTE: Address switches (see Fig. 20) must be set at 01

(different when CCN connected).

fL.w-- 6%2

0

P-

C H A S S I S

G R O U N D

I

P

0

-( REAR)

N E T W O R K

SNNECTOR

A D D R E S S

S W I T C H E S

0

<

0

PSI0

’ (FORWARD)

S E N S O R B U S

C O N N E C T O R

J8

LOW VOLTAGE RELAY MODULE (DSIO) (Fig. 21)

Inputs - Inputs on strip 53 are discrete inputs (ON/OFF).

When 24vat power is applied across the 2 terminals in a channel it reads as on signal. Zero v reads as an off signal.

Outputs - Terminal strips J4 and JS are internal relays whose coils are powered-up and powered-off by a signal from microprocessor. The relays switch the circuit to which they are connected. No power is supplied to these connections by

DSIO module. L

--/%o-6 93

-

S E N S O R B U S C O N N E C T O R

/

RED STATUS LIGHT -b

2,4,6, AND 8 ARE GRQUND (C)

9e

I

RELAYS “, :

I

1 $i 1 !;i

NEL I2

I I

IO

9

%YoN

C&MON

2:

COMMON

NO

&MON

2:

7

/

A D D R E S S A D J U S T M E N T

(NOT SHOWN) ON UNDERSIDE

ii!“”

LEGEND

- Communications Bus

- Normally Closed

1 bb;n$ly Open

I%

Fig. 21 - Low-Voltage Relay Module (DSIO)

8

7

6

5

I -

PWR - Power

Fig. 20 - Processor Module (PSIO)

6 5

4 IN/4 OUT MODULE (SIO) (Fig. 22) - 4 In/4 Out module allows the following features to be utilized:

1. Temperature Reset by outdoor air or space temperature.

A remote thermistor (Part No, 30GB660002) is also required.

NOTE: This accessory is temperature reset.

not

required for return water

2. Temperature Reset by remote 4-20 mA signal.

3. Demand Limit by remote 2-stage switch.

4. Demand Limit by remote 4-20 mA signal

5. Dual Set Point by remote switch.

The options module is standard on 30GN040-210 and a s s o c i a t e d m o d u l a r c h i l l e r s a n d i s a v a i l a b l e a s a field-installed accessory on 3OGT225, 250, and 280

Flotronic T” II chillers.

Remember to reconfigure the chiller for each feature selected (see Table 13). For temperature reset, demand limit, and dual set point, desired set points must be entered through keypad and display module (see Set Point Function section on page 39).

See Table 17 for overall troubleshooting information.

L i

:

:

:

N

I

P

U

T

S

J 7

II a

:

* l l l l

: a

: a r

!8

0

T u

P

U

T

S

J6

COMM

P W R

ADDRESS

S W I T C H E S

LEGEND

EEM

- Communications Bus

- Power

Fig. 22 - 4 In/4 Out Module (SIO)

66

SYMPTOMS

COMPRESSOR DOES

NOT RUN

COMPRESSOR CYCLES OFF

ON LOW PRESSURE

COMPRESSOR SHUTS DOWN

~N&-l;l;PFlESSURE

UNIT OPERATES LONG OR

CONTINUOUSLY

SYSTEM NOISES

COMPRESSOR LOSES OIL

FROSTED SUCTION LINE

HOT LIQUID LINE

FROSTED LIQUID LINE

COMPRESSOR DOES NOT

UNLOAD fgF;RESSOR DOES NOT

Table 17 - Troubleshooting

CAUSE

Power line open

Control fuse open

High Pressure Switch (HPS) tripped

Tripped power breaker

L o o s e t e r m i n a l c o n n e c t i o n

Improperly wired controls

Low line voltage

Compressor motor defective

Seized compressor

Loss of charge

Bad transducer

Low refrigerant charge

High-pressure control erratic in action

Compressor discharge valve partially closed

Condenser fan(s) not operating

Condenser coil oluaaed or dirtv

Low refrigerant charge

Control contacts fused

Partially plugged or plugged expansion valve or filter driver

D e f e c t i v e i n s u l a t i o n

Service load

Piping vibration

Expansion valve hissing

Compressor noisy

Leak in system

Mechanical damage (blown piston or broken discharge valve)

Crankcase heaters not energized durina shutdown

Expansion valve admitting excess refrigerant

Shortaae of refriaerant due to leak

Shutoff valve partially closed or restricted

B u r n e d o u t c o i l

Defective capacity control valve

M i s w i r e d s o l e n o i d

Weak, broken, or

wrong valve body spring

M i s w i r e d s o l e n o i d

Defective capacity control valve

Plugged strainer (high side)

Stuck or damaged unloader piston or piston ring(s)

REMEDY

Reset circuit breaker

Check control circuit for ground or short.

R e p l a c e f u s e

Move LOCAL/ENABLE-STOP-CCN switch to STOP position then back to RUN or CCN position.

Check the controls. Find cause of trip and reset breaker

Check connections

Check wiring and rewire.

Check line voltage. Determine location of voltage drop and remedy deficiency

Check motor winding for open or shot-t.

Replace compressor if necessary.

Replace compressor.

Repair leak and recharge

Replace transducer.

Add refrigerant.

Replace control

Open valve or replace if defective.

Check wiring. Repair or replace motor(s) i f d e f e c t i v e .

C l e a n c o i l .

Add refrigerant,

Replace control

Clean or replace

Replace or repair.

Keep doors and windows closed.

Check valves. Replace if necessary.

Support piping as required

Add refrigerant.

Check for plugged liquid line filter drier.

Check valve plates for valve noise.

Replace compressor (worn bearings).

Check for loose compressor holddown bolts.

Repair leak.

Repair damage or replace compressor.

Replace heaters, check wiring and crankcase heater relay contacts.

Check cooler and compressor thermistors.

T e s t E X V .

Repair leak and recharge

Open valve or remove restriction.

R e p l a c e c o i l

Replace valve

Rewire correctly.

R e p l a c e s p r i n g

Rewire correctly

Replace valve.

Clean or replace strainer.

Clean or replace the necessary parts.

67

1

ACCESSORY UNLOADER INSTALLATION

Some of the 30G FlotronicT” II units come standard with unloader(s), and many permit additional unloader(s) to be added if desired. See Table 18.

IMPORTANT: Accessory hot gas bypass cannot be installed with accessory unloaders on units with more than 4 compressors.

If accessory unloaders are desired, an accessory unloader package is used. Package includes a suction cutoff unloader head package. The 24-v coil in the package can be used for

040-l 10, 130 (60 Hz) and associated modular units. A

115 v or 230 v coil must be used for 130 (50 Hz), 150-210,

225, 250, 280, and associated modular units. Coil voltage depends on control circuit voltage, Consult current Carrier price pages for appropriate part numbers.

NOTE: The accessory package will include all necessary components and wiring with the following exceptions: The field must provide screws, and on the 130-2 10, 225, 250,

280, and associated modular units, the field must also supply a 20 vdc (part number HK356ABOOl) unloader relay and wire (90” C or equivalent).

Table 18 - Standard and Accessory Unloaders

I

1 NO. OF ACCESSORY

30GN190-210*

3OGT225,250,280

0

0

Circuit A Circuit B

1

1 or2

1

1 1

1

1 1

*And associated modular units

Installation

1.

Be sure all electrical disconnects are open and tagged before any work begins. Inspect the package contents for any damage during shipping. File a claim with the shipper if damage has occurred.

2.

3.

4.

For ease of installation, factory-supplied wiring for the additional unloader is provided in the compressor harness.

Install the additional unloader cylinder head on the lead compressor, Al or El, according to instructions provided by the compressor manufacturer in the accessory package.

Continue installation per either 040-l 10, 130 (60 Hz) units or 130 (50 Hz), 150-210, 225, 250, and 280 units section as appropriate.

0 4

-0-l 10, 130 (60 Hz) UNITS (and associated modular units)

1.

Wire the solenoid before any field wiring begins. Wiring between components and control box must be enclosed in conduit. All local electrical codes and National

Electrical Code (NEC) must be followed. Factory wires are provided in the compressor harness to connect the solenoid. These wires are in the compressor control box.

2. Wire the control side. Open the left side control box door and remove inner panel. Using the holes provided and field-supplied screws, install field-supplied transformer above the DSIO-LV on the control panel.

3.

4.

Wire the primary side of the transformer in parallel with

TRAN3. See Fig. 23. This supplies transformer with proper line voltage. Be sure to connect proper tap of the transformer to ensure supply of proper secondary voltage.

Wire the secondary side of transformer to DSIO-LV -

J5-9, and a jumper from DSIO-LV - J5-9 to DSIO-LV -

54-9. Wire the secondary common to TB7-2. Connect the transformer ground to ground hole supplied near the transformer. These connections provide DSIO with necessary power to energize the solenoid coils.

When all connections are made, check for proper wiring and tight connections. Replace and secure inner panel.

Restore power to unit.

Configure the processor. With the addition of extra unloaders, the unit configuration has changed. To change the configuration of the processor, enter the service function using the keypad and display module. Before any changes can be made, the LOCAL/ENABLE-STOP-

CCN switch must be in the STOP position, and the servicer must log on to the processor.

a.

b,

Press pJl,,,l* Keypad LCD displays the word

PASSWORD.

p a y s

LOGGEDON.

C.

d.

To change configuration, press m H. Keypad LCD displays FLD CFG.

If an additional unloader was added to compressor

Al, press m until NULA 1 appears in keypad discircuit A. Keypad display now reads NULA 2.

If an additional unloader was added to compressor

B 1, press q until NULB 1 appears in keypad display. Press m bi for the number of unloaders on circuit B. Keypad display now reads NULB 2.

When configuration is complete, press mM. Keypad display reads LOGGEDON. Press m until key-

5.

6.

pad display reads LOG OFF. Press H . Keypad display reads EXIT LOG.

III

2 1 pEsTI. Keypad display reads OUTPUTS. Press I)I until display reads ULA 2 OFF. Press q

. Relay energizes. Press a and relay deenergizes. Press Li_] until display reads

ULB2 OFF. Press H . Relay energizes. Press q and relay deenergizes.

When unloader check has been performed, return LOCAL/

ENABLE-STOP-CCN to proper position. Close and secure control box door.

68

~13014 115v 0R 230y;f;~RO~ S

C H E M A T I

C i

-- 13 6 y

1’

1

!

1 r--‘---------‘-‘-“--“‘-“-----------~

IDS00

(LWl

-9RA

- VI0

I

!

I

I

I

I

1

I

I

L--a---

0

0

0

0

FROM 115V OR 23OV CONTROL SCHEMATIC

T R A N

‘.

\

\

\

\

\ \

\

ERCS

RED-

080-110 (SO/SO Hz) and 130 (60 Hz)

L E G E N D

- Contactor

- Compressor Protection Control System

- Control Relay

Rela Module

- Low u, oltage k z ~~.?ther

- Terminal Block

TL - Transformer

U

- Unloader

Fig. 23 - Accessory Unloader Control Wiring

69

130 (50 Hz), 150-210, 225, 250, AND 280 UNITS (and associated modular units)

1. Install control wiring. The minimum wire size for installation is 16 AWC (American Wire Gage). Refer to

Fig. 24 and 25 for proper wiring. Open the control box door. Locate unloader relays A and B (URA, URB) in place of the hot gas bypass relays as shown on the component arrangement diagram on the unit. Mount the relays with the field-supplied screws. Be careful not to damage the components and wiring in the area when mounting the relays.

2

Wire the control side. Wire the URA coil in series between 56-18 and J6- 19 of the 4 IN/4 OUT module with the wires provided. Wire the URB coil in series between J6-21 and J6-22 of the same module with the wires provided.

Locate the black wire in the control harness originating from TRANS labeled HGBPR-A-COM. Connect this wire to the URA terminal COM. Connect the wire labeled

HGBPR-A-NO to URA-NO. Connect the wire from

URA-NO to TB3-5. For an extra unloader on circuit

B, connect the wire labeled HGBPR-B-COM to UR-B-

COM, and the wire labeled HGBPR-B-NO to URB-

NO. Connect the wire from URB-NO to TB3-6.

3. Wire in the solenoid valves.

NOTE: Wires external to the control box must be run in conduit +

Terminal blocks are provided for easy field wiring. Use one of the isolated ‘/s-in. (22-mm) holes in the side of the compressor electrical box with a strain relief to run the wires to the solenoid coil. Connect URA between

TB3-5 and TB3-8. Connect URB between TB3-6 and

TB3-8. Check all of the electrical connections for proper location and tightness, and replace and secure the electrical box of the compressor,

4. Configure the microprocessor, Once the relays are mounted in the control box, the microprocessor must be configured for the unloader option. ‘To do so: a. Be sure the LOCAL/ENABLE-STOP-CCN switch is in the STOP position.

b. Log into the processor and enter the service funct i o n u s i n g t h e k e y p a d a n d d i s p l a y m o d u l e .

Type r\ I;;;;E] . The keypad LCD will display

“PASSWORD.” Enter ~~1~~~~, and the keypad LCD will display “LOGGEDON. ”

C,

To change the configuration, type 14 H, and the keypad LCD will display “FLD CFG.” Press m until either “NULA 0” or “NULA I” is displayed

(depending on the number of unloaders provided as standard), Then press m H (for 1 unloader on Al) or FiFi (for 2 unloaders on compressor Al). The display will now read either “NULA 1” or d.

‘ ‘NULA 2, ” as appropriate, Press I)I to get to the

NULB display, and change this setting in the same manner as with circuit A.

Once the configuration is complete, press m Fi, and the keypad LCD will display “LOGGEDON,”

Press @ until the keypad LCD display reads “LOG

OFF.” Press H and the keypad LCD will display

“EXIT LOG.”

5

for leaks, and the system is prepared for operation per the instructions for the compressor unloader head installation, check the output of the relays using the test function as follows: a. Press T;1H, and the display will read “COMP.” b. Press the q to scroll down until the display reads

“CPA1 OFF.” and the compressor should start.

and the compressor should stop.

f. Press H , and the solenoid should energize.

g. Press q and the solenoid should deenergize.

h. Use the a and H keys to check the remainder of the unloader coils.

6. Once the check has been performed, return the LOCAL/

ENABLE-STOP-CCN switch to the proper position.

7. Close and secure the control box door.

8. Start the unit and confirm that the chiller operates properly.

COM -

HGBPR -

KB 1

LEGEND

Communications Bus

- Terminal Block

Hot Gas Bypass Relay TLN - Transformer

Normally Open

- Unloader

S n u b b e r kl

- Unloader Relay

Fig. 24 - Flotronic’” II 115/230-V Unloader Wiring, 130 (50 Hz), 150-210, 225, 250, 280

7 0

GdYEL

&

- - - - - - - - cALARncooE31~ -

~gl

1 w m -

43 m

----

I ’

I ’

Fam&& r -

- - - tRoDEn

S W I T C H

{

‘-%F-----

-

~~ I I -

a

Qb

i

- - - ‘ I

I ’

I ’

I ’

I I

’ ! I I

(AIJM CODE 21,301 o(oocm

I r - - - - - - - -

L B qg&#g’ CALAM CWE 211

I ’ ’

l ’

I ’

I 1

I ’

I ’ ; balToysTER -

{

A - -

lmyTEF4 - - - - - -

- - - - - - - - m - w - - - - - - -

’ ] I

- - - - - I - - - - - - - - - - - - - - - - Y - -

I

LEGEND

EB

- Contactor

- Circuit Breaker

5&N

C O M M - Communications Bus UR

- Switch

- Transformer

- Unloader Relay

Fig. 25 - Accessory Unloader Control Wiring, 130 (50 Hz), 150~210,225,250, 280

FIELD WIRING

Refer to Fig, 26 - 36 for field wiring.

-k367

4 IN/4 O U T

M O D U L E

!

i t - 1

J7-2

STAGE 1 1

L v--w _--B-B 0

57-3

-----

- - m - w

57-6

I fl i-

STAGE2 1

L - -

u

J7-7

NOTE: Contacts must be rated for dry circuit application, capable of reliably switching a 5 vdc, 1 mA to 20 mA load

Fig. 26A - Demand Limit - Two External Switch

Inputs, 30GN040-210 and Associated Modular Units

4368

l- ----- -I I ----- cl 4

STAGE 1 1

L - - - - - - - - - - - -cl 5

T B 7

T B 7

STAGE2 1

r e m - - - H - - - - -clI

T B 7

L -------m-_

2

cl

T B 7

TB - Terminal Block

N O T E S :

1 Requires accessory options module package.

2 Contacts must be rated for dry circuit application, capable of reliably switching a 5 vdc,

1

mA to 20 mA load

Fig. 26B - Demand Limit - Two External Switch

Inputs, 30GT225, 250, 280 Units

71

r--

--- --

E X T E R N A L

3OGN040-210 AND ASSOCIATED MODULAR UNITS

u

+

3 m-7

----

4

T B - 7

FLOTRONIC II UNITS 30GT225,250,280

TB - Terminal Block

NOTE: The 30GT225,250,280 Flotronic’” II units require the accessory options module package for this feature

Fig. 27 - Demand Limit - 4-20 mA Signal

(Externally Powered)

--j370

4 IN/4

OUT

MODULE

30GN040-210 AND ASSOCIATED MODULAR UNITS

m-7

--- --cl5

T B - 7

30GT225,250,280 FLOTRONIC II UNITS

TB - Terminal Block

NOTE: The 30GT225,250,280 Flotronic II units require the accessory options module package for this feature.

Fig. 28 - Demand Limit - 4-20 mA Signal

(Internally Powered)

- /$W

4 IN/4

OUT

M O D U L E r 6 3 c l J7-15

1

I,

REMOTE

THERMISTOR

-

-

-

-

-

-

El J7-16

30GN040-210 AND ASSOCIATED MODULAR UNITS l-B-11

TB-11

3OGT225,250,280 FLOTRONIC II UNITS

TB - Terminal Block

NOTE: The 30GT225,250,280 Flotronic II units require the accessory options module package for this feature.

Fig. 29 - Remote Reset from Space or

Outdoor-Air Temperature

FIELD SUPPLIED

LOOP ISOLATOR

J7-13

E X T E R N A L

POWER

37-14

30GN040-210 AND ASSOCIATED MODULAR UNlTS

FIELD SUPPLIED -

LOOP ISOLATOR

+

-

3

u

I-B11

-

-

I I I

FLOTRONIC II UNITS

4

l-E-11

30GT225,250,280

TB - Terminal Block

NOTE:

The 30GT225,250,280 Flotronic II units require the accessory options module package for this feature.

Fig. 30 - Remote Reset from 4-20 mA Signal

(Externally Powered)

-a3

-73

-

J7-13

4-2omA

SIGNAL

GENERATOR

t

-

- El

J7-t4

30GN040-210 AND ASSOCIATED MODULAR UNITS

TB-11

-----

-

I

TE11

FLOTRONIC II UNITS 30GT225,250,280

TB - Terminal Block

NOTE: The 30GT225,250,280 Flotronic II units require the accessory options module package for this feature

Fig. 31 - Remote Reset from 4-20 mA Signal

(Internally Powered)

72

CONTACTS r+ +--A

REMOVE JUMPER

3

T&6

L -

30GNO40-210 AND ASSOCIATED MODULAR UNITS

----

\

-

$

,REMOVE JUMPER

FLOTRONIC I UNITS 30GT225,250,280

---- g3

TB6

T B - 7

10

TE7

TB - Terminal Block

N O T E S :

1 The 30GT225,250,280 Flotronic II units require the accessory options module for this feature.

2. Contacts must be rated for dry circuit application, capable of reliably switching a 5 vdc, 1 mA to 20 mA load

Fig. 32 - Remote On/Off

&-jQ - 13 a--

4 IN/4 OUT

M O D U L E

S W I T C H

,- - m - - - -f-J J7-10

i- - _ _ _ - _-a J7-lf

30GN040-210 AND ASSOCIATED MODULAR UNITS

1

-El TB-11

30GT225,250,280

T B - Terminal Block

--a-

2

-0

TBI1

FLOTRONIC’” II UNITS

NOTE: The 30GT225,250,280 Flotronic II units require the accessory options module for this feature

Fig. 33 - Remote Dual Set Point Control

43 7 6

1 ------

115/23ovv

CWP

cl-

3 -rB$J

- c l

-------_- __-- 4

-t-l

f

30GN040-210 AND ASSOClATED MODULAR UNITS

T5-3

TE5

--v-w 3

El

WI-- u

4 TE5

30GT225,250,280 FLOTRONIC II UNITS

CWP - Chilled Water Pump

T B - Terminal Block

NOTE: The maximum load allowed for the chilled water pump circuit is 125 va sealed, 1250 va inrush at 115 or 230 v

Fig. 34 - Chilled Water Pump

-43 77

I

I -

i

L

ALARM SHUTOFF

S W I T C H

a -

1 TB-3

-cl

------2 T 8 - 3 c l

30GN040-210 AND ASSOCIATED MODULAR UNITS

_d--

---- u

2 TB-5

30GT225,250,280 FLOTRONIC II UNITS

TB - T e r m i n a l B l o c k

NOTE: The maximum load allowed for the alarm circuit is 125 va sealed, 1250 va inrush at 115 or 230 v

Fig. 35 - Remote Alarm

-43 -78

CWPl (CWFS)

;-+--y---- --a TB-6

I - - -

- -

2

TB-6

30GN040-210 AND ASSOCIATED MODULAR UNITS

- - - - -

-El

TB-7

30GT225,250,280

-

8 TE7 u

FLOTRONIC I I UN ITS

CWPI - Chilled Water Pump Interlock

CWFS - Chilled Water Flow Switch (not required - low flow protection is provided by Flotronic II controls)

T B - Terminal Block

NOTE: Contacts must be rated for dry circuit application, capable of reliably switching a 5 vdc, 1 mA to 20 mA load.

Fig. 36 - Interlocks

REPLACING DEFECTIVE

PROCESSOR MODULE

The replacement part number is printed on a small label on front of the PSI0 module. The model and serial numbers are printed on the unit nameplate located on an exterior corner post. The proper software and unit configuration data is factory installed by Carrier in the replacement module. Therefore, when ordering a replacement processor module (PSIO), specify complete replacement part number, full unit model number, and serial number. If these numbers are not provided, the replacement module order is configured instead as a generic Flotronic’” 11 replacement module. This requires reconfiguration of the module by the installer.

7 3

Electrical shock can cause personal injury, Disconnect all electrical power before servicing.

Installation

1.

2.

Verify the existing PSI0 module is defective by using the procedure described in the Control Modules section on page 64.

Refer to Start-Up Checklist for Flotronic II Chiller Systems (completed at time of original start-up) found in job folder. This information is needed later in this

3 .

4 .

5 .

6 .

7 .

procedure. If checklist does not exist, fill out the ri H and Fi F\ configuration code sections on a new checklist. Tailor the various options and configurations as needed for this particular installation.

Check that all power to unit is off. Carefully disconnect all wires from defective module by unplugging the

6 connectors. It is not necessary to remove any of the individual wires from the connectors. Remove the green ground wire.

Remove defective PSI0 by removing its mounting screws with a Phillips screwdriver, and removing the module from the control box, Save the screws for later use.

Use a small screwdriver to set address switches Sl and

S2 on the new PSI0 module to exactly match the settings on the defective module.

Package the defective module in the carton of the new module for return to Carrier.

Mount the new module in the unit control box using a

Phillips screwdriver and the screws saved in Step 4 above.

8. Reinstall all 6 wire connectors and the green ground wire.

9. Carefully check all wiring connections before restoring power.

10. Verify the LOCAL/ENABLE-STOP-CCN switch is in

STOP position

11. Restore control power. Verify the red and green lights on top of PSI0 and front of each DSIO module respond as described in Control Modules section on page 64. The keypad and display module @IS10 or LID) should also begin its rotating display.

12. Using the keypad and display module, press [p-&q, to verify that the software version number matches the

ER (engineering requirement) number shown on the PSI0 label.

codes (CODE 1 through CODE 6) exactly match the codes listed for this unit model on the component arrangement label diagram on the control box door. If they are different or are all zeros, reenter the 6 codes.

If any changes are required, the PSI0 display becomes blank and reconfigures itself after pressing the H key while displaying CODE 6. The display returns in approximately 15 seconds.

NOTE: Codes with leading zeros in the configuration will be displayed starting with the first number greater than zero.

for this particular installation. Table 9 shows the factory configuration code default settings. Table 9 also shows the service replacement code default settings which are used if no model number was specified when ordering the replacement PSI0 module. It is strongly suggested that the Start-Up Checklist for Flotronic’” II Chiller

Systems (completed at time of original start-up) be used at this time to verify and/or reprogram the various options and configurations required for this job.

15. After completing the configuration steps outlined above, restore main power and perform a unit test as described in m H and r;lFl sections on page 38.

16, Complete this procedure and restore chiller to normal operation by returning the LOCAL/ENABLE-STOP-

CCN switch to desired position.

74

Copyright 1994 Carrier Corporation

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book 2 P C 9 0 3 Catalog No 563-015 Printed in U S A Form 30GN-2T Pg 76 l-94 Replaces: 30GEl,GT-1

30GN-1T

T ,

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