Bard GSVS 242-A, 302-A, 361-A, 421-A water source heat pump Installation instructions

INSTALLATION

INSTRUCTIONS

WATER SOURCE

HEAT PUMPS

Models: GSVS242-A, GSVS302-A

GSVS361-A, GSVS421-A

Earth Loop Fluid

Temperatures 25° - 110°

Ground Water Temperatures 45° - 75°

BARD MANUFACTURING COMPANY

Bryan, Ohio 43506

Since 1914...Moving ahead, just as planned.

Manual: 2100-317D

Supersedes: 2100-317C

File:

Date:

Volume I, Tab 8

11-22-02

CONTENTS

Getting Other Informations and Publications ...... 1

General Information

Water Source Nomenclature .................................. 2

Heater Package Nomenclature .............................. 5

Open Loop (Well System Applications)

Note ............................................................. 20

Water Connection ................................................. 20

Well Pump Sizing ................................................. 20

Start Up Prodecure for Open Loop System .......... 22

Water Corrosion ................................................... 22

Remedies of Water Problems .............................. 23

Lake and/or Pond Installations ............................. 24

Application and Location

General ............................................................... 6

Shipping Damage ................................................... 6

Application .............................................................. 6

Location ............................................................... 6

Ductwork ............................................................... 6

Filters ............................................................... 8

Condensate Drain ................................................... 8

Piping Access to Unit ............................................. 8

Sequence of Operation

Cooling ............................................................. 25

Heating Without Electric Heat .............................. 25

Heating With Electric Heat ................................... 25

Emergency Heat ................................................... 25

Lockout Circuits .................................................... 25

Pressure Service Ports ......................................... 25

System Start Up ................................................... 25

Pressure Tables .................................................... 28

Quick Reference Troubleshooting Chart .............. 29

Wiring Instructions

General ............................................................... 9

Control Circuit Wiring ............................................. 9

Wall Thermostats ................................................... 9

Thermostat Indicator Lamps ................................. 10

Emergency Heat Position ..................................... 10

Blower Control Setup ............................................ 10

Humidity Control ................................................... 10

CFM Light ............................................................. 10

Wiring Diagrams ............................................. 12-16

Service

Service Hints ........................................................ 30

Unbrazing System Components ........................... 30

Troubleshooting ECM Blower Motors ............. 31-32

Closed Loop (Earth Coupled Groung Loop

Applications)

Note ............................................................. 17

Circulation System Design ................................... 17

Start Up Procedure for Closed Loop System ....... 18

Accessories

Add-On DPM26A Pump Module Kit ..................... 33

General ............................................................. 33

Installation ............................................................ 33

Ground Source Heat Pump

Performance Report ....................................... 34-35

Wiring Diagram ..................................................... 36

Figures

Figure 1 Unit Dimensions ................................... 4

Figure 2 Field-Conversion to Left Hand Return .. 7

Figure 3 Filter Components ................................ 8

Figure 4 Piping Access ....................................... 8

Figure 5 Blower Control Board ......................... 11

Figure 6 Circulation System Design ................. 17

Figure 7 ............................................................ 18

Figure 8 Performance Model GPM-1 Loop

Pump Module ..................................... 19

Figure 9 Performance Model GPM-2 Loop

Pump Module ..................................... 19

Figure 10 Water Connection Components ......... 21

Figure 11 Cleaning Water Coil ............................ 22

Figure 12 Lake or Pond Installation .................... 24

Figure 13 ............................................................ 26

Figure 14 Control Board ..................................... 26

Figure 15 ............................................................ 27

Figure 16 Pressure Tables .................................. 28

Figure 17 DPM26A Pump and GSVS Unit ......... 33

Tables

Table 1 Specifications ....................................... 2

Table 2 Indoor Blower Performance .................. 3

Table 2A Flow Rates for Various Fluids ............... 3

Table 3 Water Coil Pressure Drop .................... 3

Table 4 Electrical Specifications Optional Field

Installed Heater Package ..................... 5

Table 5 Control Circuit Wiring ........................... 9

Table 6 Wall Thermostat and Subbase

Combinations ....................................... 9

Table 7 Proper Location of Taps ..................... 10

Table 8 Constant Flow Valves ......................... 20

GETTING OTHER INFORMATION AND PUBLICATIONS

These publications can help you install the air conditioner or heat pump. You can usually find these at your local library or purchase them directly from the publisher. Be sure to consult current edition of each standard.

National Electrical Code ................... ANSI/NFPA 70

Standard for the Installation ........... ANSI/NFPA 90A of Air Conditioning and

Ventilating Systems

Standard for Warm Air ................... ANSI/NFPA 90B

Heating and Air

Conditioning Systems

Load Calculation for Residential .... ACCA Manual J

Winter and Summer

Air Conditioning

Duct Design for Residential .......... ACCA Manual D

Winter and Summer Air Conditioning and Equipment Selection

Closed-Loop/Ground Source Heat Pump .... IGSHPA

Systems Installation Guide

Grouting Procedures for Ground-Source ..... IGSHPA

Heat Pump Systems

Soil and Rock Classification for .................. IGSHPA the Design of Ground-Coupled

Heat Pump Systems

Ground Source Installation Standards ......... IGSHPA

Closed-Loop Geothermal Systems .............. IGSHPA

– Slinky Installation Guide

FOR MORE INFORMATION, CONTACT

THESE PUBLISHERS:

ACCA Air Conditioning Contractors of America

1712 New Hampshire Avenue

Washington, DC 20009

Telephone: (202) 483-9370

Fax: (202) 234-4721

ANSI American National Standards Institute

11 West Street, 13th Floor

New York, NY 10036

Telephone: (212) 642-4900

Fax: (212) 302-1286

ASHRAE American Society of Heating Refrigerating, and Air Conditioning Engineers, Inc.

1791 Tullie Circle, N.E.

Atlanta, GA 30329-2305

Telephone: (404) 636-8400

Fax: (404) 321-5478

NFPA National Fire Protection Association

Batterymarch Park

P.O. Box 9101

Quincy, MA 02269-9901

Telephone: (800) 344-3555

Fax: (617) 984-7057

IGSHPA International Ground Source

Heat Pump Association

490 Cordell South

Stillwater, OK 74078-8018

Manual 2100-317

Page 1

WATER SOURCE PRODUCT LINE NOMENCLATURE

GS V S 36 1 A

Electrical Characteristics

A = 230/208-60-1

Modification Code

Approximate Capacity Size On High Speed

S = Single Capacity Compressor

V = Vertical

Ground Source Heat Pump

M O D E L

E l e c t ir c a l R a it n g ( 6 0 Z / V P H )

O p e r a it n g V o tl a g e R a n g e

M i n i m u m C i r c u ti A m p a c ti y

+ F i e l d W i r e S i z e

+ + D e l a y F u s e M a x o r C i r c u ti B r e a k e r

T o t a l U n ti A m p s 2 3 0 / 2 0 8

C O M P R E S S O R

V o tl s

R a t e d L o a d A m p s 2 3 0 / 2 0 8

B r a n c h C i r c u ti S e l e c it o n C u r r e n t

L o c k R o t o r A m p s 2 3 0 / 2 0 8

B L O W E R M O T O R a n d E V A P O R A T O R

B l o w e r M o t o r – H P / S p d .

B l o w e r M o t o r – A m p s / C F M

F a c e A r e a S q .

F t /.

R o w s / F i n s P e r I n c h

+ 75°C copper wire

TABLE 1

SPECIFICATIONS

G S V S 2 4 2 A

2 3 0 / 2 0 8 1

2 5 3 1 9 7

1 5 .

0

# 1 4

2 0

8 .

1 / 9 .

1

G S V S 3 0 2 A

2 3 0 / 2 0 8 1

2 5 3 1 9 7

1 7 .

0

# 1 4

2 5

1 0 .

8 / 1 1 .

8

2 3 0 / 2 0 8

6 .

5 / 7 .

5

1 0 .

0

4 5 / 4 5

2 3 0 / 2 0 8

8 .

5 / 9 .

5

1 1 .

0

5 4 / 5 4

G S V S 3 6 1 A

2 3 0 / 2 0 8 1

2 5 3 1 9 7

2 0 .

0

# 1 2

3 0

1 3 .

9 / 1 4 .

5

2 3 0 / 2 0 8

1 1 .

0 / 1 1 .

6

1 3 .

5

7 2 .

5 / 7 2 .

5

1 .

6 / 8 0 0

3 .

1 6 / 3 / 1 5

2 .

3 / 1 0 0 0

3 .

1 6 / 3 /

1 / 2 / V a ir a b l e

1 5

++ HACR type circuit breaker

2 .

9 / 1 2 0 0

3 .

1 6 / 4 / 1 1

G S V S 4 2 1 A

2 3 0 / 2 0 8 1

2 5 3 1 9 7

2 4 .

0

# 1 0

3 5

1 7 .

7 / 1 9 .

1

2 3 0 / 2 0 8

1 4 .

2 / 1 5 .

6

1 6 .

0

8 8 / 8 8

3 .

5 / 1 2 5 0

3 .

1 6 / 4 / 1 1

Manual 2100-317

Page 2

M o d e l

E S P I n c h e s W C

.

0 0

.

1 0

.

2 0

.

3 0

.

4 0

.

5 0

.

6 0

TABLE 2

INDOOR PLOWER PERFORMANCE (CFM)

G S V S 2 4 2 A G S V S 3 0 2 A G S V S 3 6 1 A

8 0 0

8 0 0

8 0 0

8 0 0

8 0 0

8 0 0

8 0 0

1 0 0 0

1 0 0 0

1 0 0 0

1 0 0 0

1 0 0 0

1 0 0 0

1 0 0 0

1 2 0 0

1 2 0 0

1 2 0 0

1 2 0 0

1 2 0 0

1 2 0 0

1 2 0 0

ESP = External Static Pressure (Inches of water)

G S V S 4 2 1 A

1 2 5 0

1 2 5 0

1 2 5 0

1 2 5 0

1 2 5 0

1 2 5 0

1 2 5 0

TABLE 2A

FLOW RATES FOR VARIOUS FLUIDS

V A R I O U S F L U I D S

F l o w r a t e r e q u i r e d G P M f r e s h w a t e r

F l o w r a t e r e q u i r e d G P M 1 5 % S o d i u m C h l o ir d e

F l o w r a t e r e q u i r e d G P M 2 5 % G S 4

G S V S 2 4 2 A

3

5

5

M O D E L S

G S V S 3 0 2 A G S V S 3 6 1 A

4

6

6

5

7

7

G S V S 4 2 1 A

5

8

8

M o d e l

G P M

7

8

5

6

9

3

4

1 0

1 1

1 2

1 3

1 4

1 5

TABLE 3

WATER COIL PRESSURE DROP

-

-

-

-

-

-

G S V S 2 4 2

P S I G F t .

H d .

1 .

0 0

1 .

4 2

1 .

8 3

2 .

2 4

2 .

6 6

-

-

2 .

3 1

3 .

2 8

4 .

2 2

5 .

1 7

6 .

1 4

-

-

-

-

-

-

-

-

-

-

-

-

-

-

G S V S 3 0 2

P S I G F t .

H d .

-

1 .

0 0

1 .

4 3

1 .

8 6

2 .

3 0

2 .

7 3

-

-

2 .

3 1

3 .

3 0

4 .

2 9

5 .

3 1

6 .

3 0

-

-

-

-

-

-

-

G S V S 3 6 1 , G S V S 4 2 1

P S I G F t .

H d .

-

-

1 .

8 0

3 .

2 8

4 .

7 7

6 .

2 6

7 .

7 5

-

-

4 .

1 5

7 .

5 7

1 1 .

0 1

1 4 .

4 6

1 7 .

9 0

9 .

2 4

-

-

-

-

-

2 1 .

3 4

-

-

-

-

-

Manual 2100-317

Page 3

FIGURE 1 – UNIT DIMENSIONS

U n i t s

A L L

W i d t h

A

2 7 "

S u p p l y R e t u r n

D e p t h H e i g h t

2

B

6 " 4

C

8 "

D u c t

D

F l a n

E g e W i d

F t h H e i g

G h t

1 3 7 / 8 " 1 3 7 / 8 " 2 2 1 / 2 " 2 2 1 / 4 "

H

6 "

I

4 1 / 4 "

J

1 1 / 2 "

MIS-1238

HEATER PACKAGE NOMENCLATURE

EH 3 GSV A A 14 C

C = Circuit Breaker

Nominal KW

A = 240/208-1-60

Modification Code

GSV = Ground Source Vertical

3 = 3 Ton

Electric Heater

TABLE 4

ELECTRICAL SPECIFICATIONS

OPTIONAL FIELD-INSTALLED HEATER PACKAGES

H e a t e r P a c k a g e

M o d e l N o .

H e a t e r

P a c k a g e

V o l t s / P h a s e

6 0 H Z

H

C e a a p t e r a

A M P S

A m p s , c i t y @

K W

K W a n d

2 4 0 V o l t s

B T U

E

E

E

H

H

H

3

3

3

G

G

G

S V

S V

S V

A

A -

A -

A 0

A 0

A 1

5 C

9 C

4 C

2 4 0 / 2 0 8 1

2 4 0 / 2 0 8 1

2 4 0 / 2 0 8 1

1 8

3 7 .

5 6 .

.

8

5

3

4

9 .

.

1 3 .

5

0

5

1

3

4

5

0

6 ,

, 3

, 6

0

4 5

9 0

3 5

H

C e a a p t a

A M P S

1 6

3 2

4 8

.

3

.

5

.

7 e r c i t

A m p s , y

1

K W a n d

@ 2 0 8 V o l t s

K

3

6

.

.

0 .

W

3

7

1

8

5

3

1

2

3

B

1

3 ,

4 ,

,

T

5

0

5

U

2 5

1 8

4 3

M i n i m u m

C i r c u i t

A m p a c i t y

2 3

4 6

7 0 .

.

5

.

9

4

M a x i m u m

H A C

B r e

R a k

C e i r r c u i t

N o n H A C R

F i e l d

W i r e

S i z e

2 5

5 0

8 0

1 0

6

3

Manual 2100-317

Page 5

APPLICATION AND LOCATION

GENERAL

Units are shipped completely assembled and internally wired, requiring only duct connections, thermostat wiring, 230/208 volt AC power wiring, and water piping. The equipment covered in this manual is to be installed by trained, experienced service and installation technicians. Any heat pump is more critical of proper refrigerant charge and an adequate duct system than a cooling only air conditioning unit.

These instructions and any instructions packaged with any separate equipment required to make up the entire heat pump system should be carefully read before beginning the installation. Note particularly any tags and/or labels attached to the equipment.

While these instructions are intended as a general recommended guide, they do not in any way supersede any national and/or local codes.

Authorities having jurisdiction should be consulted before the installation is made.

SHIPPING DAMAGE

Upon receipt of the equipment, the carton should be checked for external signs of shipping damage. If damage is found, the receiving party must contact the last carrier immediately, preferably in writing, requesting inspection by the carrier’s agent.

APPLICATION

Capacity of the unit for a proposed installation should be based on heat loss calculations made in accordance with methods of the Air Conditioning Contractors of

America, formerly National Warm Air Heating and

Air Conditioning Association. The air duct system should be sized and installed in accordance with

Standards of the National Fire Protection Association for the Installation of Air Conditioning and Venting systems of Other than Residence Type NFPA No.

90A, and residence Type Warm Air Heating and Air

Conditioning Systems, NFPA No. 90B.

LOCATION

The unit may be installed in a basement, closet, or utility room provided adequate service access is insured. The unit is shipped from the factory as a right hand return and requires access clearance of two feet minimum to the access panels on this side of the unit. If unit is to be field converted to left hand return the opposite side will require access clearance of two feet minimum.

Manual 2100-317

Page 6

Unit may be field converted to left hand return by removing four (4) screws that secure the control panel cover, removing two (2) screws that hold the control panel in place, sliding the control panel through the compressor compartment and re-securing the control panel on the opposite side of the water coil. (See

Figure 2.) The two (2) access doors from the right hand return can be transferred to the left-hand return side and the one (1) left hand panel can be transferred to the right hand side.

Unit casing suitable for 0 inch clearance with 1 inch duct clearance for at least the first 4 feet of duct.

These units are not approved for outdoor installation and therefore must be installed inside the structure being conditioned. Do not locate in areas subject to freezing in the winter or subject to sweating in the summer.

Before setting the unit, consider ease of piping, drain and electrical connections for the unit. Also, for units which will be used with a field installed heat recovery unit, consider the proximity of the unit to the water heater or storage tank. Place the unit on a solid base, preferably concrete, to minimize undesirable noise and vibration. DO NOT elevate the base pan on rubber or cork vibration eliminator pads as this will permit the unit base to act like a drum, transmitting objectionable noise.

DUCTWORK

If the unit is to be installed in a closet or utility room which does not have a floor drain, a secondary drain pan under the entire unit is highly recommended.

DO NOT install the unit in such a way that a direct path exists between any return grille and the unit.

Rather, insure that the air entering the return grille will make at least one turn before entering the unit or coil. This will reduce possible objectionable compressor and air noise from entering the occupied space.

Design the ductwork according to methods given by the Air Conditioning Contractors of America. When duct runs through unconditioned spaces, it should be insulated with vapor barrier. It is recommended that flexible connections be used to connect the ductwork to the unit in order to keep the noise transmission to a minimum.

FIGURE 2

FIELD-CONVERSION TO LEFT HAND RETURN

REMOVE SINGLE AND

DOUBLE DOORS

Q

REMOVE 4 SCREWS SECURING

COVER

R

REMOVE 2 SCREWS HOLDING

CONTROL BOX TO CORNER PANEL

S

PASS CONTROL PANEL THROUGH

COMPRESSOR SECTION

T

RE-SECURE CONTROL PANEL ON

OPPOSITE SIDE IN SAME MANNER

AS ORIGINALLY ATTACHED

REPOSTIION DOORS SO

DOUBLE DOORS ARE ON

CONTROL PANEL SIDE, AND

SINGLE DOOR ON OPPOSITE

SIDE

MIS-1209

TOP VIEW

Manual 2100-317

Page 7

FILTER

This unit must not be operated without a filter. It comes equipped with a disposable filter which should be checked often and replaced if dirty. Insufficient air flow due to undersized duct systems or dirty filters can result in nuisance tripping of the high or low pressure control. Refer to Table 2 for correct air flow and static pressure requirements. (See Figure 3.)

CONDENSATE DRAIN

Determine where the drain line will run. This drain line contains cold water and must be insulated to avoid droplets of water from condensing on the pipe and dripping on finished floors or the ceiling under the unit. A trap MUST BE installed in the drain line and the trap filled with water prior to start up. The use of plugged tees in place of elbows to facilitate cleaning is highly recommended.

Drain lines must be installed according to local plumbing codes. It is not recommended that any condensate drain line be connected to a sewer main.

The drain line enters the unit through the FPT coupling on the coil side of the unit.

PIPING ACCESS TO UNIT

Water piping to and from the unit enters the unit casing from the coil side of the unit under the return air filter rack. Piping connections are made directly to the unit and are 3/4” FPT. (See Figure 4.)

FIGURE 3

FIGURE 4

MIS-1212

Manual 2100-317

Page 8

MIS-1210

WIRING INSTRUCTIONS

GENERAL

All wiring must be installed in accordance with the

National Electrical Code and local codes. In Canada, all wiring must be installed in accordance with the

Canadian Electrical Code and in accordance with the regulations of the authorities having jurisdiction.

Power supply voltage must conform to the voltage shown on the unit serial plate. A wiring diagram of the unit is attached to the inside of the electrical cover. The power supply shall be sized and fused according to the specifications supplied. A ground lug is supplied in the control compartment for equipment ground.

The unit rating plate lists a Maximum Time Delay

Fuse” or “HACR” type circuit breaker that is to be used with the equipment. The correct size must be used for proper circuit protection and also to assure that there will be no nuisance tripping due to the momentary high starting current of the compressor motor.

Table 5 should be used to determine proper gauge of control circuit wring required.

TABLE 5

CONTROL CIRCUIT WIRING

R a t e d V A o f

C o n t r o l C i r c u i t

T r a n s f o r m e r

5 0

T r a n s f o r m e r

S e c o n d a r y

F L A @ 2 4 V

2 .

1

M a x i m u m T o t a l

D i s t a n c e o f

C o n t r o l C i r c u i t

W i r i n g i n F e e t

2 0 g a u g e

1 8 g a u g e

1 6 g a u g e

1 4 g a u g e

1 2 g a u g e -

-

-

-

-

4

6

5

0

1 0 0

1 6 0

2 5 0

Example: 1. Control Circuit transformer rated at 50

VA

2. Maximum total distance of control circuit wiring 85 feet.

From Table 5, minimum of 16 gauge wire should be used in the control circuit wiring.

CONTROL CIRCUIT WIRING

The minimum control circuit wiring gauge needed to insure proper operation of all controls in the unit will depend on two factors.

1. The rated VA of the control circuit transformer.

WALL THERMOSTATS

The following all thermostats and subbases should be used as indicated, depending on the application.

2. The maximum total distance of the control circuit wiring.

TABLE 6

WALL THERMOSTAT AND SUBBASE COMBINATIONS

P a r t N o .

M o d e l N o .

D e s c r i p t i o n C o n t r o l D i a g r a m

8 4 0 3 0 1 7

8 4 0 4 0 0 9

8 4 0 3 0 2 7

8 4 0 3 0 3 5

8 4 0 3 0 4 2

8 4 0 3 0 4 5

T 8 7 4 R 1 1 2 9

Q 6 7 4 L 1 1 8 1

1 F 9 2 3 7 1

1 F 9 4 8 0

T 8 5 1 1 G

T 8 4 1 A 1 7 6 1

T h e r m o s t a t

S u b b a s e

1 s t a g e c o o l ,

1 s t

S y s t e m

F a n s s t a g w i e t c f h : i s w i x e t c d

2 s t a g e h e a t h :

, 2 n d

E m .

s t a g e h e a t

H e a t H e a t a n t i c i p a t o r s

O f f C o o l

O n O f f

T h e r m o s t a t 2 s t a g e c o o l ,

7 d a y

3 s t a g e h e a t

E l e c t r o n i c

2 s e t u p / m a s e t n u

a l o r b a c k a u t o m a t i c p e r i o d s

5 o r p r o g r a m i n g c h a n g e o v e r

T h e r m o s t a t 2 s t a g e c o o l , 2 s t a g e h e a t

E l e c t r o n i c

1 s e t u p / m a s e t n u

a l o r b a c k a p u e t r i o m o d a t i c c h a n g e o v e r

7 d a y p r o g r a m i n g

T h e r m o s t a t 1

E l s t a e c t r g e o n i c c o o l , m a

2 n u s t a g e a l o r a h e a t u t o m a t i c c h a n g e o v e r

T h e r m o s t a t 1

1 s t a g e c o o l , 2 s t a g e h e a t s t a g e

H e a t a n t f i x e d , 2 i c i p a t o r n s d s t a g e a d j u s t a b l e

S y s

F a n t e m

S w i t

S w i c h : t c h :

O n -

E m .

O f f

H e a t H e a t O f f C o o l

4 0 9 1 5 0 0

4 0 9 1 5 0 1

4 0 9 1 5 0 2

4 0 9 1 5 0 3

4 0 9 1 5 0 4

Manual 2100-317

Page 9

THERMOSTAT INDICATOR LAMPS

STANDARD INDICATOR LAMPS

The lamp marked “EM” or “EMER.” comes on and stays on whenever the system switch is placed in the emergency heat position.

The lamp marked “CHECK” or “MALF.” will flash if the high pressure switch opens and locks out compressor operation. The “CHECK” or “MALF.” lamp will come on and stay on if the low pressure

switch closes and locks out compressor operation. To reset either the high or low pressure switch, place the thermostat in the off position then back to the on position.

OPTIONAL INDICATOR LAMPS

The lamp marked “PUMP” comes on and stays on anytime the compressor is on.

The lamp marked “AUX” comes on and stays on anytime electric heaters are on.

EMERGENCY HEAT POSITION

The operator of the equipment must manually place the system switch in this position. This is done when there is a known problem with the unit, or when the

“CHECK” or “MALF.” lamp comes on indicating a problem.

BLOWER CONTROL SETUP

Due to the unique functions that the ECM blower motor is able to perform each installation requires that the jumpers on the blower control board be checked and possibly moved based on the final installation.

(See Figure 5.) Check Table 7 to verify the ADJUST,

HEAT, COOL, and DELAY taps are set in the proper location for the installation.

HUMIDITY CONTROL

With the use of optional humidistat 8403-038 cut jumper on blower control board marked “cut to enable” (refer to

U on Figure 5) to allow the humidistat to reduce the blower airflow in the dehumidify mode. By reducing the airflow the air coil runs colder and thus extracts more moisture. This can increase latent capacity from 5 to 13% based on the R/

H conditions of the structure being conditioned. Refer to control circuit diagram for wiring of humidistat.

CFM LIGHT

The light marked CFM on the blower control board

(refer to

V on Figure 5) alternates between blinking 1 second per approximately 100 CFM of air delivered by the blower, and a solid light with 1 second off period between modes.

TABLE 7

1 .

A d j u s t

N o r m

( + )

( )

T e s t

-

-

-

-

U n i t

J u m s p h

J u m p e r e r i p p e d i i n n t t h h i i w i t h j u m p e r s s p o s i t i o n i n c i n r e t h a i s s e p s p o s i t i o n d e c r e a s e s o s i t i o n a i r f l o w a i r f l o w

1 5 %

1 5 %

N o t u s e d i n t h i s a p p il c a t i o n .

2 .

H e a t

A .

B .

C .

D .

-

-

-

0 k W u n i t s h i p p e d w i t h j u m p e r i n t h i s p o s i t i o n

4 .

5 k W

9 k W h e h e a t a t e r e r p a p a c c k a k a g e g i e n s i n s t a t a ll e ll d e d j u m p e r j u m p e r i n i n t t h i s h i s p o p o s i t i o n s i t i o n

1 4 k W h e a t e r p a c k a g e i n s t a ll e d j u m p e r i n t h i s p o s i t i o n

3 .

C o o l

A .

B .

C .

D .

-

-

-

U n

J u i t m s h i p p e d p e r i n t h i w i s t h j u m p p o s i t i o n e r i n t w h e n h i a s n p o s i t i o n y h e a t e r

N

N o o t t u u s s e e d d i n t h i s a p p il c a t i o n i n t h i s a p p il c a t i o n p a c k a g e i n s t a ll e d

4 .

D e l a y

A .

B .

C .

D .

-

-

-

-

N o d e l a y u n i t s h i p p e d w i t h j u m p e r i n t h i s p o s i t i o n

1

2 m i n .

1 / 2 b l m i o w n .

e r d e l a y s h o r t r u n o n o n s h u t s t a r t d o w n w i t h 5 6 % w i t h 7 5 % a i r f l o a w i r p f l o w l u s t a p B d e l a y

1 m i n .

p r e r u n o n s t a r t w i t h 3 8 % a i r f l o w p l u s t a p B a n d C d e l a y

Manual 2100-317

Page 10

FIGURE 5

MIS-1211

Manual 2100-317

Page 11

Manual 2100-317

Page 12

Manual 2100-317

Page 13

Manual 2100-317

Page 14

Manual 2100-317

Page 15

Manual 2100-317

Page 16

CLOSED LOOP

(EARTH COUPLED GROUND LOOP APPLICATIONS)

NOTE:

Unit shipped from factory with 27 PSIG low pressure switch wired into control circuit and must be rewired to 15 PSIG low pressure

switch for closed loop applications. This unit is designed to work on earth coupled ground loop systems, however, these systems operate at entering water (without antifreeze) temperature with pressures well below the pressures normally experienced in water well systems.

THE CIRCULATION SYSTEM DESIGN

Equipment room piping design is based on years of experience with earth coupled heat pump systems.

The design eliminates most causes of system failure.

Surprisingly, the heat pump itself is rarely the cause.

Most problems occur because designers and installers forget that a closed loop earth coupled heat pump system is NOT like a household plumbing system.

Most household water systems have more than enough water pressure either from the well pump of the

PIPE TO GROUND LOOP

PIPE FROM

GROUND LOOP

PUMP

MODULE municipal water system to overcome the pressure of head loss in 1/2 inch or 3/4 inch household plumbing.

A closed loop earth coupled heat pump system, however, is separated from the pressure of the household supply and relies on a small, low wattage pump to circulate the water and antifreeze solution through the earth coupling, heat pump and equipment room components.

The small circulator keeps the operating costs of the system to a minimum. However, the performance of the circulator MUST be closely matched with the pressure of head loss of the entire system in order to provide the required flow through the heat pump.

Insufficient flow through the heat exchanger is one of the most common causes of system failure. Proper system piping design and circulator selection will eliminate this problem

Bard supplies a work sheet to simplify head loss calculations and circulator selection. Refer to

“Circulating Pump Worksheet” section in manual

2100-099.

FIGURE 6

WATER

IN

MIS-1213

WATER OUT HOSE CLAMPS

BARB X INSERT

BRASS ADAPTERS

1” FLEXIBLE HOSE

OPTIONAL VISUAL

FLOW METER

NOTE: IF USED

SUPPORT WITH A

FIELD-FABRICATED

WALL BRACKET

Manual 2100-317

Page 17

MIS-1704

START UP PROCEDURE FOR CLOSED

LOOP SYSTEM

1. Be sure main power to the unit is OFF at disconnect.

2. Set thermostat system switch to OFF, fan switch to

AUTO.

3. Move main power disconnect to ON. Except as required for safety while servicing, DO NOT

OPEN THE UNIT DISCONNECT SWITCH.

4. Check system air flow for obstructions.

A. Move thermostat fan switch to ON. Blower runs.

B. Be sure all registers and grilles are open.

C. Move thermostat fan switch to AUTO.

Blowing should stop.

5. Flush, fill and pressurize the closed loop system as outlined in manual 2100-099.

6. Fully open the manual inlet and outlet valves.

Start the loop pump module circulator(s) and check for proper operation. If circulator(s) are not operating, turn off power and diagnose the problem.

7. Check fluid flow using a direct reading flow meter or a single water pressure gauge, measure the pressure drop at the pressure/temperature plugs across the water coil. Compare the measurement with flow versus pressure drop table to determine the actual flow rate. If the flow rate is too low,

Manual 2100-317

Page 18 recheck the selection of the loop pump module model for sufficient capacity. If the module selection is correct, there is probably trapped air or a restriction in the piping circuit.

8. Start the unit in cooling mode. By moving the thermostat switch to cool, fan should be set for

AUTO.

9. Check the system refrigerant pressures against the cooling refrigerant pressure table in the installation manual for rated water flow and entering water temperatures. If the refrigerant pressures do not match, check for air flow problem then refrigeration system problem.

10. Switch the unit to the heating mode. By moving the thermostat switch to heat, fan should be set for

AUTO.

11. Check the refrigerant system pressures against the heating refrigerant pressure table in installation manual. Once again, if they do not match, check for air flow problems and then refrigeration system problems.

NOTE: If a charge problem is determined (high or

low):

A. Check for possible refrigerant leaks.

B. Recover all remaining refrigerant from unit and repair leak.

C. Evacuate unit down to 29 inches of vacuum

D. Recharge the unit with refrigerant by weight.

This is the only way to insure a proper charge.

DIAL FACE PRESSURE GAUGE

WITH GAUGE ADAPTOR

FIGURE 7

THERMOMETER

WATER COIL CONNECTION

AT HEAT PUMP

MIS-1219

1” AND 3/4” MPT

BARB X INSERT BRASS ADAPTER

SELF SEALING

PETE’S TEST PLUG

TEST PLUG CAP

35

30

25

20

15

10

5

0

0

FIGURE 8

PERFORMANCE MODEL GPM-1 LOOP PUMP MODULE

5 10 15 20

Flow (GPM)

25 30 35

70

FIGURE 9

PERFORMANCE MODEL GPM-2 LOOP PUMP MODULE

60

50

40

30

20

10

0

0 5 10 15 20

Flow (GPM)

25 30 35

Manual 2100-317

Page 19

OPEN LOOP

(WELL SYSTEM APPLICATIONS)

NOTE:

Unit shipped from factory with 27 PSIG low pressure switch wired into control circuit for open loop applications.

WATER CONNECTIONS

It is very important that an adequate supply of clean, noncorrosive water at the proper pressure be provided before the installation is made. Insufficient water, in the heating mode for example, will cause the low pressure switch to trip, shutting down the heat pump.

In assessing the capacity of the water system, it is advisable that the complete water system be evaluated to prevent possible lack of water or water pressure at various household fixtures whenever the heat pump turns on. All plumbing to and from the unit is to be installed in accordance with local plumbing codes.

The use of plastic pipe, where permissible, is recommended to prevent electrolytic corrosion of the water pipe. Because of the relatively cold temperatures encountered with well water, it is strongly recommended that the water lines connecting the unit be insulated to prevent water droplets form condensing on the pipe surface.

Refer to piping, Figure 10. Slow closing Solenoid

Valve (6) with a 24 V coil provides on/off control of the water flow to the unit. Refer to the wiring diagram for correct hookup of the valve solenoid coil.

Constant Flow Valve (7) provides correct flow of water to the unit regardless of variations in water pressure. Observe the water flow direction indicated by the arrow on the side of the valve body.

Following is a table showing which valve is the be installed with which heat pump.

TABLE 8

CONSTANT FLOW VALVES

P a r t N o .

M i n .

A v a i l a b l e

P r e s s u r e P S I G

F l o w R a t e

G P M

8

8

8

8

6

6

6

6

0

0

0

0

3

3

3

3

-

-

-

-

0

0

0

0

0

0

1

1

7

8

0

1

1

1

1

1

5

5

5

5

(

(

(

(

1

1

1

1

)

)

)

)

4

5

6

8

8 6 0 3 0 1 9 1 5 ( 1 ) 3

(1) The pressure drop through the constant flow valve will vary depending on the available pressure ahead of the valve. Unless minimum of 15 psig is available immediately ahead of the valve, no water will flow.

Manual 2100-317

Page 20

Strainer (5) installed upstream of constant flow valve

(7) to collect foreign material which would clog the flow valve orifice.

The figure shows the use of shutoff valves (9) and

(11), on the in and out water lines to permit isolation of the unit from the plumbing system should future service work require this. Globe valves should not be used as shutoff valves because of the excessive pressure drop inherent in the valve design. Instead us gate or ball valves as shut offs so as to minimize pressure drop.

Drain cock (8) and (10), and tees have been included to permit acid cleaning the refrigerant-to-water coil should such cleaning be required. See WATER

CORROSION.

Drain cock (12) provides access to the system to check water flow through the constant flow valve to insure adequate water flow through the unit. A water meter is used to check the water flow rate.

WELL PUMP SIZING

Strictly speaking, sizing the well pump is the responsibility of the well drilling contractor. It is important, however, that the HVAC contractor be familiar with the factors that determine what size pump will be required. Rule of thumb estimates will invariably lead to under or oversized well pumps.

Undersizing the pump will result in inadequate water to the whole plumbing system but with especially bad results to the heat pump – NO HEAT / NO COOL calls will result. Oversized pumps will short cycle and could cause premature pump motor or switch failures.

The well pump must be capable of supplying enough water and at an adequate pressure to meet competing demands of water fixtures. The well pump must be sized in such a way that three requirements are met:

1. Adequate flow rate in GPM.

2. Adequate pressure at the fixture.

3. Able to meet the above from the depth of the well-feet of lift.

The pressure requirements put on the pump are directly affected by the diameter of pipe being used, as well as, by the water flow rate through the pipe.

The worksheet included in manual 2110-078 should guarantee that the well pump has enough capacity. It should also ensure that the piping is not undersized which would create too much pressure due to friction loss. High pressure losses due to undersized pipe will reduce efficiency and require larger pumps and could also create water noise problems.

FIGURE 10

WATER CONNECTION COMPONENTS

MIS-1221

5

8

9

6

7

12

10

11

Manual 2100-317

Page 21

SYSTEM START UP PROCEDURE FOR

OPEN LOOP APPLICATIONS

1. Be sure main power to the unit is OFF at disconnect.

2. Set thermostat system switch to OFF, fan switch to

AUTO.

3. Move main power disconnect to ON. Except as required for safety while servicing – DO NOT OPEN

THE UNIT DISCONNECT SWITCH.

4. Check system air low for obstructions.

A. Move thermostat fan switch to ON. Blower runs.

B. Be sure all registers and grilles are open.

C. Move thermostat fan switch to AUTO. Blower should stop.

5. Fully open the manual inlet and outlet valves.

6. Check water flow.

A. Connect a water flow meter to the drain cock between the constant flow valve and the solenoid valve. Run a hose from the flow meter to a drain or sink. Open the drain cock.

B. Check the water flow rate through constant flow valve to be sure it is the same as the unit is rated for. (Example: 4 GPM for a GSVS302-A.)

C. When water flow is okay, close drain cock and remove the water flow meter. The unit is now ready to start.

7. Start the unit in cooling mode. By moving the thermostat switch to cool, fan should be set for

AUTO.

A. Check to see the solenoid valve opened.

8. Check the system refrigerant pressures against the cooling refrigerant pressure table in the installation manual for rated water flow and entering water temperatures. If the refrigerant pressures do not match, check for air flow problem that refrigeration system problem.

9. Switch the unit to the heat mode. By moving the thermostat switch to heat, fan should be set for

AUTO.

A. Check to see the solenoid valve opened again.

10. Check the refrigerant system pressures against the heating refrigerant pressure table in installation manual. Once again, if they do not match, check for air flow problems and then refrigeration system problems.

NOTE: If a charge problem is determined (high or low):

A. Check for possible refrigerant loss.

B. Discharge all remaining refrigerant from unit.

C. Evacuate unit down to 29 inches of vacuum.

D. Recharge the unit with refrigerant by weight.

This is the only way to insure proper charge.

Manual 2100-317

Page 22

WATER CORROSION

Two concerns will immediately come to light when considering a water source heat pump, whether for ground water or for a closed loop application: Will there be enough water? And, how will the water quality affect the system?

Water quantity is an important consideration and one which is easily determined. The well driller must perform a pump down test on the well according to methods described by the Nation Well Water

Association. This test, if performed correctly, will provide information on the rate of low and on the capacity of the well. It is important to consider the overall capacity of the well when thinking about a water source heat pump because the heat pump may be required to run for extended periods of time.

The second concern, about water quality, is equally important. Generally speaking, if the water is not offensive for drinking purposes, it should pose no problem for the heat pump. The well driller or local water softening company can perform tests which will determine the chemical properties of the well water.

Water quality problems will show up in the heat pump in one of more of the following ways:

1. Decrease in water flow through the unit.

2. Decreased heat transfer of the water coil (entering to leaving water temperature difference is less).

There are four main water quality problems associated with ground water. These are:

1. Biological Growth. This is the growth of microscopic organisms in the water and will shop up as a slimy deposit throughout the water system.

Shock treatment of the well is usually required and this is best left up to the well driller. The treatment consists of injecting chlorine into the well casing and flushing the system until all growth is removed.

2. Suspended Particles in the Water. Filtering will usually remove most suspended particles (fine sand, small gravel) from the water. The problem with suspended particles in the water is that it will erode metal parts, pumps, heat transfer coils, etc.

So long as the filter is cleaned and periodically maintained, suspended particles should pose no serious problem. Consult with your well driller.

3. Corrosion of Metal. Corrosion of metal parts results from either highly corrosive water (acid water, generally not the case with ground water) of galvanic reaction between dissimilar metals in the presence of water. By using plastic plumbing or dielectric unions galvanic reaction is eliminated.

The use of corrosion resistant materials such as the

Cupro nickel coil) through the water system will reduce corrosion problems significantly.

4. Scale Formation. Of all the water problems, the formation of scale by ground water is by far the most common. Usually this scale is due to the formation of calcium carbonate by magnesium carbonate or calcium sulfate may also be present.

Carbon dioxide gas (CO

2

), the carbonate of calcium and magnesium carbonate, is very soluble in water.

It will remain dissolved in the water until some outside factor upsets the balance. This outside influence may be a large change in water temperature or pressure. When this happens, enough carbon dioxide gas combines with dissolved calcium or magnesium in the water and falls out of solution until a new balance is reached. The change in temperature that this heat pump produces is usually not high enough to cause the dissolved gas to fall out of solution. Likewise, if pressure drops are kept to a reasonable level, no precipitation of carbon dioxide should occur.

REMEDIES OF WATER PROBLEMS

Water Treatment. Water treatment can usually be economically justified for close loop systems. However, because of the large amounts of water involved with a ground water heat pump, water treatment is generally too expensive.

Acid Cleaning the Water Coil or Heat Pump

Recovery Unit. If scaling of the coil is strongly suspected, the coil can be cleaned up with a solution of

Phosphoric Acid (food grade acid). Follow the manufacturer’s directions for mixing, use, etc. Refer to the “Cleaning Water Coil”, Figure 12. The acid solution can be introduced into the heat pump coil through the hose bib A. Be sure the isolation valves are closed to prevent contamination of the rest of the system by the coil. The acid should be pumped from a bucket into the hose bib and returned to the bucket through the other hose bib B. Follow the manufacturer’s directions for the product used as to how long the solutionis to be circulated, but it is usually circulated for a period of several hours.

LAKE AND POND INSTALLATIONS

Lakes and ponds can provide a low cost source of water for heating and cooling with a ground water heat pump. Direct usage of the water without some filtration is not recommended as algae and turbid water can foul the water to freon heat exchanger. Instead, there have been very good results using a dry well dug next to the water line or edge. Normal procedure in installing a dry well is to backhoe a 15 to 20 foot hole adjacent to the body of water (set backhoe as close to the water’s edge as possible). Once excavated, a perforated plastic casing should be installed with gravel backfill placed around the casing. The gravel bed should provide adequate filtration of the water to allow good performance of the ground water heat pump.

The following is a list of recommendations to follow when installing this type of system:

A. A lake or pond should be at least 1 acre (40,000 a square feet) in surface area for each 50,000 BTUs of ground water heat pump capacity or have 2 times the cubic feet size of the dwelling that you are trying to heat (includes basement if heated).

B. The average water depth should be a least 4 feet and there should be an area where the water depth is at least 12 to 15 feet deep.

C. If possible, use a submersible pump suspended in the dry well casing. Jet pumps and other types of suction pumps normally consume more electrical energy than similarly sized submersible pumps.

Pipe the unit the same as a water well system.

FIGURE 11

CLEANING WATER COIL

PUMP

HOSE BIB (A)

HOSE BIB (B)

ISOLATION VALVE

ISOLATION VALVE

MIS-1222

Manual 2100-317

Page 23

D. Size the pump to provide necessary GPM for the ground water heat pump. A 12 GPM or greater water flow rate is required on all modes when used on this type system.

E. A pressure tank should be installed in dwelling to be heated adjacent to the ground water heat pump.

A pressure switch should be installed at the tank for pump control.

F. All plumbing should be carefully sized to compensate for friction losses, etc., particularly if the pond or lake is over 200 feet from the dwelling to be heated or cooled.

G. Keep all water lines below low water level and below the frost line.

H. Most installers use 4 inch filed tile (rigid plastic or corrugated) for water return to the lake or pond.

I. The drain line discharge should be located at least

100 feet from the dry well location.

J. The drain line should be installed with a slope of 2 inches per 10 feet of run to provide complete drainage of the line when the ground water heat pump is not operating. This gradient should also help prevent freezing of the discharge where the pipe terminates above the frost line.

K. Locate the discharge high enough above high water level so the water will not back up and freeze inside the drain pipe.

L. Where the local conditions prevent the use of a gravity drainage system to a lake or pond, you can instead run standard plastic piping out into the pond below the frost and low water level.

WARNING

Thin ice may result in the vicinity of the discharge line.

For complete information on water well systems and lake and pond applications, refer to Manual 2100-078 available from your distributor.

FIGURE 12

LAKE OR POND INSTALLATION

WELL CAP

12’

to

15’

LAKE

or

POND

WATER LEVEL

GRAVEL FILL

ELECTRICAL LINE

PITLESS ADAPTER

TO PRESSURE

TANK

DROP

PIPE

WATER SUPPLY

LINE

15’ to 20’

DEEP

PERFORATED

PLASTIC CASING

SUBMERSIBLE

PUMP

MIS-1607

Manual 2100-317

Page 24

SEQUENCE OF OPERATION

COOLING

When thermostat system switch is placed in COOL it completes a circuit from “R” to “O”, energizing the reversing valve solenoid. On a call for cooling, the cooling bulb completes a circuit from “R” to “Y”, energizing the compressor contactor starting the compressor. The “R” to “G” circuit for blower operation is automatically completed on any call for cooling operation, or can be energized by manual fan switch on subbase for constant air circulation.

HEATING WITHOUT ELECTRIC HEAT

When thermostat system switch is placed in HEAT it opens the circuit from “R” to “O”, de-energizing the reversing valve solenoid. On a call for heating, it completes a circuit from “R” to “Y”, energizing the compressor contactor starting the compressor. The

“R: to “G” circuit for blower operation is automatically completed on any call for heating operation, or can be energized by manual fan switch on subbase for constant air circulation.

HEATING WITH ELECTRIC HEAT

The first stage of heating is the same as heating without electric heat. When the second stage thermostat bulb makes, a circuit is completed between

“R” to “W1”, energizing the heater package time delay relay(s). The electric heater elements will remain energized until the second stage bulb is satisfied at which time the circuit between “R” to

“W1” will open de-energizing the heat package time delay relay(s).

EMERGENCY HEAT

When thermostat system switch is placed in EMER, the compressor circuit “R” to “Y” is locked out.

Control of the electric heaters is from “R” to “W1” through the thermostat second stage heating bulb.

Blower operation is controlled by an interlock circuit with the electric heater time delay relay and the blower control. The electric heater elements will remain energized until the second stage bulb is satisfied at which time the circuit between “R” and

“W1” will open de-energizing the heat package time delay relay (s) and the blower.

LOCKOUT CIRCUITS

Each unit has two separate lockout circuits, one for the high pressure switch and one for the low pressure switch. Lockout circuits operate the same in either cooling or heating operation.

High pressure lockout circuit: Consists of a normally closed switch and an impedance circuit. As long as the switch is closed the circuit “R” to “Y” which controls the compressor contactor is complete.

If the pressure rises above the set point of the switch

(approximately 355 PSIG) the switch will open and the impedance circuit will lockout the circuit even after the pressure drops below the set point and switch closes. The circuit will remain in lockout until the thermostat system switch is set in the OFF position and all low voltage to the control circuit is off.

Low pressure lockout circuit: Consists of a normally open switch and a relay used in a latching circuit. As long as the switch is open the circuit “R” to “Y” which controls the compressor contactor is complete. If the pressure drops below the set point of the switch (approximately 15 to 27 PSIG) the switch will close and the relay will lockout the circuit even after the pressure rises above the set point and switch opens. The circuit will remain in lockout until the thermostat system switch is set in the OFF position and all low voltage to the control circuit is off.

PRESSURE SERVICE PORTS

High and low pressure service ports are installed on all units so that the system operating pressures can be observed. Pressure tables can be found later in the manual covering all models. It is imperative to match the correct pressure table to the unit by model number.

SYSTEM START-UP

Step 1 – Close disconnect switch(es) and set the thermostat to cool and the temperature to the highest setting.

Step 2 – Check for proper airflow across the indoor coil.

Step 3 – Connect the service gauges and allow the unit to run for at least 10 minutes or until pressures are stable. Check pressures to the system pressure table attached to the unit service panel.

Step 4 – Fill out Ground Source Heat Pump

Performance Report.

Manual 2100-317

Page 25

COMPRESSOR

HIGH PRESSURE SWITCH

DISCHARGE SERVICE PORT

FIGURE 13

DESUPERHEAT COIL

LOW VOLTAGE

TERMINAL STRIP

BLINKER

BLOWER BOARD

LOW PRESSURE

LOCKOUT RELAY

EMERGENCY HEAT

RELAY

TRANSFORMER

GROUND TERMINAL

Manual 2100-317

Page 26

WATER COIL

LOW VOLTAGE IN

HIGH VOLTAGE IN

MIS-1224

LOW PRESSURE

SWITCHES

REVERSING VALVE

EXPANSION VALVE

SUCTION SERVICE PORT

FIGURE 14

CONTROL PANEL

COMPRESSOR CAPACITOR

COMPRESSOR CONTACTOR

HIGH PRESSURE

LOCKOUT RELAY

FIGURE 15

Manual 2100-317

Page 27

FIGURE 16

PRESSURE TABLES

COOLING

Fluid Temperature Entering Water Coil Degree F

G S V S 2 4 2 A

G S V S 3 0 2 A

G S V S 3 6 1 A

G S

M

V o d

S 4 e l

2 1 A

R e t u r n A i r

T e m p e r a t u r e

7 5

6 2 d e g .

d e g .

D B

W B

8 0

6 7 d e g .

d e g .

D B

W B

8 5

7 2 d e g .

d e g .

D B

W B

7 5

6 2 d e g .

d e g .

D B

W B

8 0

6 7 d e g .

d e g .

D B

W B

8 5

7 2 d e g .

d e g .

D B

W B

7 5

6 2 d e g .

d e g .

D B

W B

8 0

6 7 d e g .

d e g .

D B

W B

8 5

7 2 d e g .

d e g .

D B

W B

7 5

6 2 d e g .

d e g .

D B

W B

8 0

6 7 d e g .

d e g .

D B

W B

8 5

7 2 d e g .

d e g .

D B

W B

P r e s s u r e

L o w S i d e

H i g h S i d e

L o w S i d e

H i g h S i d e

L o w

H i g h

S i d e

S i d e

L o w S i d e

H i g h S i d e

L o w S i d e

H i g h S i d e

L o w S i d e

H i g h S i d e

L o w

H i g h

S i d e

S i d e

L o w

H i g h

S i d e

S i d e

L o w

H i g h

S i d e

S i d e

L o w

H i g h

S i d e

S i d e

L o w

H i g h

S i d e

S i d e

L o w

H i g h

S i d e

S i d e

4 5

7 4

1 1 6

7 9

1 1 9

8 5

1 2 4

5

1

0

8

3

6

6

5 5

1

8

4

7

8

6 0 6 5

7 5

1 2 8

7 6

1 4 0

8 0

1 3 1

8 1

1 4 3

7 7

1 5 1

7 8

1 6 3

8 2

1 5 5

8 3

1 6 7

8 8

1 6 1

8 9

1 7 3

7 0

7 9

1 7 5

8 4

1 7 9

7 5

8 0

1 8 6

8 5

1 9 1

8 0 8 5

8 1

1 9 8

8 2

2 1 0

8 7

2 0 3

8 8

2 1 5

9 0

1 8 6

9 1

1 9 8

9 3

2 1 0

9 4

2 2 3

8 3

1 2 0

6 9

1 1 2

7 2

1 1 4

7 7

1 1 7

7 4

1 1 5

8 0

1 1 8

6 9

1 2 6

7 4

1 2 9

8 0

1 3 3

7 3

1 2 5

7 8

1 2 8

8 4

1 3 2

8 0

1 2 3

7 5

1 2 6

8 1

1 3 0

7 4

1 3 6

7 9

1 3 9

1

1

7

3

8

4

6

7

2

2

7 5

1 4 6

8 0

1 5 0

8 4

1 4 4

8 6

1 5 5

7 1

1 3 4

7 2

1 4 5

7 7

1 4 9

8 3

1 5 4

1

1

7

3

7

4

0

7

5

0

8 1

1 4 5

7 1

1 4 8

7 2

1 5 9

7 6

1 5 1

7 7

1 6 3

1

8

5

2

7

8 3

1 6 9

1

1

1

1

1

1

7

5

8

6

8

6

7

5

7

6

8

6

6

7

1

1

7

7

3

6

8

0

4

6

1

1

1

1

1

1

7

6

8

7

8

7

7

6

7

7

8

7

7

8

2

2

8

9

4

7

9

2

5

8

7 3

1 7 0

7 8

1 7 4

1

7

8

4

1

7 9

1 8 6

8 4

1 8 1

8 5

1 9 2

7 5

1 9 3

1

2

8

9

8

0

0

7

6

4

7 8

1 7 9

8 3

1 8 4

8 9

1 9 0

7 5

1 7 9

8 0

1 8 3

8 6

1 9 0

7 6

2 0 4

8 1

2 0 9

8 7

2 1 6

7 9

1 8 9

8 4

1 9 5

9 0

2 0 2

7 7

1 8 9

8 0

2 0 0

2

8

0

5

6

2

8

1

1

1

8 6

2 1 7

9 1

2 1 4

9 2

2 2 5

8 7

2 0 2

7 8

2 0 1

7 9

2 1 2

8 1

1 9 5

8 2

2 0 6

8 8

2 1 4

2

2

8

1

8

2

3

8

9

6

8 2

2 2 2

2

2

2

2

2

8

2

9

3

8

2

8

2

9

3

7

8

3

7

0

3

4

9

0

8

2

2

2

7

1

8

2

8

2

7

5

2

0

8

8

7 8

2 2 6

8 3

2 3 2

8 9

2 4 0

7 9

2 3 7

8 4

2 4 3

9 0

2 5 2

9 0

8 3

2 2 1

8 9

2 2 7

9 5

8 4

2 3 3

9 0

2 3 9

9 5

2 3 5

9 6

2 4 8

1

2 4 5

2 5 1

2

0

8 5

9 1

9

6

0

7

0

1

2 5 6

2 6 3

2

0

8 6

9 2

9

7

5

8

3

8 3

2 3 2

8 8

2 3 9

9 4

2 4 9

8 1

2 3 4

8 4

2 4 3

8 9

2 5 0

9 5

2 6 0

8 2

2 4 5

8 5

2 4 1

8 6

2 5 2

9 1

2 5 0

9 2

2 6 2

8 0

2 4 8

2

8

5

5

5

2

8

5

1

9

8 6

2 6 6

9 1

2 6 4

9 2

2 7 5

8 2

2 7 0

2

2

8

7

9

8

7

8

3

7

8 5

2 5 4

9 1

2 6 1

9 6

2 7 2

8 3

2 5 6

8 7

2 6 4

9 3

2 7 4

1 1 0

8 7

2 6 8

9 3

2 7 5

9 9

2 8 5

HEATING

M o d e l

G S V S 2 4 2 A

G S V S 3 0 2 A

G

G

S

S

V

V

S

S

3

4

6

2

1

1 -

A

A

R e t u r n A i r

T e m p e r a t u r e

7

7

7

7

0

0

0

0 d e d e d e d e g .

g .

g .

g .

D

D

D

D

B

B

B

B

P r e s s u r e

L o w

H i g h

S i d e

S i d e

L o w

H i g h

S i d e

S i d e

L o w

H i g h

S i d e

S i d e

L o w

H i g h

S i d e

S i d e

Fluid Temperature Entering Water Coil Degree F

4 5

3 8

1 6 9

3 5

1 8 1

3 3

1 7 7

3 0

1 9 2

5 0

7 3

1 7 5

4 0

1 8 7

3 8

1 7 3

3 5

1 9 9

5 5

4 8

1 8 0

4 5

1 9 4

4 3

1 8 9

4 0

2 0 5

6 0

5 3

1 8 6

5 0

2 0 1

4 8

1 9 6

4 5

2 1 1

6 5

5 8

1 9 1

5 6

2 0 7

5 3

2 0 2

5 0

2 1 7

7 0

6 3

1 9 7

6 1

2 1 4

5 8

2 0 8

5 5

2 2 3

7 5

6 8

2 0 3

6 6

2 2 1

6 3

2 1 4

6 0

2 2 9

8 0

7 3

2 0 8

7 2

2 2 7

6 8

2 2 0

6 5

2 3 5

8 5

7 8

2 1 4

7 7

2 3 4

7 3

2 2 6

7 0

2 4 1

9 0

8 3

2 1 9

8 2

2 4 1

7 8

2 3 2

7 5

2 4 7

9 5

8 8

2 2 5

8 7

2 4 7

8 3

2 3 9

8 0

2 5 4

1 0 0

9 3

2 3 0

9 3

2 5 4

8 8

2 4 5

8 5

2 6 0

Manual 2100-317

Page 28

˜

Ð

Denotes common cause

Denotes occasional cause

QUICK REFERANCE TROUBLESHOOTING CHART FOR WATER TO AIR HEAT PUMP

Line Voltage

POWER SUPPLY

Control Circuit Compressor

WATER COIL SECTION

Water

Refrigerant System Solenoid

Rev.

Valve Water Coil

INDOOR SECTION

Indoor Blower Motor and Coil

AUX.

Heat Gen.

Compressor Will Not Run

No Power at Contactor

Å Å Å Å

Compressor Will Not Run

Power at Contactor

Compressor "Hums"

But Will Not Start

Å Å Å

Å Å Å

Compressor Cycles on Overload

Å Å Å

Ë Ë

Ë

Å Å Å Å

Å Å Å

Ë Å Å Å Å

Å Å Å Ë Ë Å Å

Thermostat Check Light

Lite-Lockout Relay

Compressor Off on High

Pressure Control

Compressor Off on Low

Pressure Control

Å

Ë Å

Ë

Compressor Noisy

Ë Å

Å Å

Ë

Ë Ë Å

Å

Å

Ë Ë Å Å Ë

Å

Å

Å

Ë

Å

Å

Å

Å

Å

Å

Å

Head Pressure Too High

Å Å Å

Head Pressure Too Low

Suction Pressure Too High

Å

Å

Å

Å Å

Å Ë

Suction Pressure Too Low

Å Ë Å

I.D. Blower Will Not Start

Å Å Å Å Å Å Å Ë Ë Å

I.D. Coil Frosting or Icing

Å Å

High Compressor Amps

Å Å Å Å Ë Å Å Å Å

Excessive Water Usage

Compressor Runs Continuously

– No Cooling

Liquid Refrigerant Flooding Back

To Compressor

Compressor Runs Continuously

– No Heating

Reversing Valve Does Not Shift

Liquid Refrigerant Flooding Back

To Compressor

Aux. Heat on I.D. Blower Off

Excessive Operation Costs

Ice in Water Coil

Å Å

Å Å

Ë Ë

Ë Ë

Å Å Ë

Ë

Å

Å

Å

Å

Å

Ë

Å Å

Å Å

Å Å

Å

Ë

Å

Å Å

Å

Ë Ë

Å

Å

Ë

Ë

Ë

Ë

Ë Ë

Ë

Ë

Ë Ë Ë Ë

Ë

Å

Å

Ë Ë

Ë

Å

Ë Ë

Ë Å

Å

Å Å

Å Ë

Å

Ë

Ë Ë Ë

Å

Ë Ë Ë

Å Ë

Ë

Å

Å Ë Å Å Å Å Å Å

Ë Å

Å

Å

Å

Å

Å

Å

Å

Å

Ë

Å

Ë Ë Ë

Ë Ë

Ë

Å

Ë

Ë

Ë

Ë Ë Ë

Å Ë

Å Å

Å Å

Å Å Å Å

Å Å Å Å

Å Å Å Å

Å Å Å Å

Ë

Ë

Ë

Ë

Ë

Å

Ë Ë

SERVICE

SERVICE HINTS

1. Caution homeowner to maintain clean air filters at tall times. Also, not to needlessly close off supply and return air registers. This reduces air flow through the system, which shortens equipment service life as well as increasing operating costs.

2. Check all power fuses or circuit breakers to be sure that they are the correct rating.

UNBRAZING SYSTEM COMPONENTS

If the refrigerant charge is removed from a scroll equipped unit by bleeding the high side only, it is sometimes possible for the scrolls to seal, preventing pressure equalization through the compressor. This may leave low side shell and suction line tubing pressurized. If the brazing torch is then applied to the low side while the low side shell and suction line contains pressure, the pressurized refrigerant and oil mixture could ignite when it escapes and contacts the brazing flame. To prevent this occurrence, it is important to check both the high and low side with manifold gauges before unbrazing.

WARNING

Both the high and low side of the scroll compressor must be checked with manifold gauges before unbrazing system components. Failure to do so could cause pressurized refrigerant and oil mixture to ignite if it escapes and contacts the brazing flame causing property damage, bodily harm or death.

Manual 2100-317

Page 30

TROUBLESHOOTING ECM BLOWER MOTORS

CAUTION

Disconnect power from unit before removing or replacing connectors, or servicing motor.

Wait at least 5 minutes after disconnection power before opening motor.

S Y M P T O M

M o t o r r o c k s s l i g h t l y w h e n s t a r t i n g .

M o t o r w o n ' t

!

N o m o v e s t a r t m e n t

C A

!

U S E

T h i s

/ i s

P R O C E D U R E n o r m a l s t a r t u p f o r I C M

!

M o t o r r o c k s , b u t w o n ' t s t a r t

!

!

!

!

!

!

!

C h e c k p o w e r a t m o t o r

C h e c k l o w v o l t a g e ( 2 4 V A C R t o C ) a t m o t o r

C h e c k l o w v o l t a g e c o n n e c t i o n s ( G , Y , W , R , C ) a t m o t o r

C h e

T e s t

C

R h u e n c c k f o r w i t h a k

M m o s o t i t u n u s e a t e d p i n s i n c t e m p o r a r y j u m p e r o r r e f o r

C t h i g e h t c k s h a f t o n n e c t o r s o n b e t w e e n R m

G o t o r h a r n e s s

!

!

C h e c k f o r l o o s e o r c o m p il a n t m o t o r m o u n t

M a k e s u r e b l o w e r w h e e l i s t i g h t o n s h a f t

M o t o r t e s t e d o s c i l l a t e s u p o f f o f b l o w e r

!

!

N o i s y b l o w e r o f c

" H u n t s " o r " p u f f s " a n d a b i n e t d o w n w h i l e b e i n g a t h i g h C F M ( s p e e d )

!

I t i s n o r m a l f o r m o t o r t o o s c i ll a t e w i t h n o l o a d o n s h a f t .

!

!

C h e c k f o r l o o s e b l o w e r h o u s i n g , p a n e l s , e t c .

H i g h s t a t i c c r e a t i n g h i g h b l o w e r s p e e d ?

– C h e c a b i c k n e t f o r s o r a i r p w a n h i s t e l s .

il n g t h r o u g h s e a m s i n d u c t s ,

– C h e c k f o r c a b i n e t / d u c t d e f o r m a t i o n

!

D o e s r e m o v i n g p a n e l o r f i l t e r r e d u c e " p u f f i n g " ?

– R e d u c e r e s t i c t i o n

– R e d u c e m a x i m u m a i r f l o w

E v i d e n c e o f

!

M o m o i t o s r t u

M o i s t u r e f a i l u r r e i s e o f m a p r e s e n t l f u n c t i o n h a s o c c u r e d

!

E v i d e n c e o f m o i s t u r e p r e s e n t i n s i d e a i r a n d m o v e r

D O

!

C h e c k o u t

!

m o t o r , c o n t r o l s , w i r i n g a n d c o n n e c t t h o r

O r i e o u n t g h l y b e f o r e c o n n e c t o r s r e p l a c i n g d o w n s o m o t o r w a t e r c a n ' t g e t i n ; i o n s

!

!

i n s t a ll " d r i p l o o p s "

U s e f o r a u t h o r i z e d r e p l a c e m e n t m o t o r

K e e p s t a t i c p r e s s u r e a n d c o n t r o l m t o a m i n i m u m : o d e l n u m b e r s

– R e c o m m e n d h i g h e f f i c i e n c y , l o w s t a t i c f i l t e r s

–

–

–

R e c o m m e n d k e e p i n g f i l t e r s c l e a n

D e s m a x i i g m n u d u c t m w o r k c o m f o r t f o r m i n i m u m s t a t i c ,

L o o k f o r a n i m p r o v e m e d n t , r e c o m w h e r e m e n d d u c t n e c e s s a r y , w o r k i n r e p l a c e m e n t .

!

!

R e p l a c e m o t o r a n d

P e r f o r m p e r f o r m M o i s t u r e C h e c k

M o i s t u r e C h e c k

D O N ' T

!

A u t o m a t i c a ll y a s s u m e t h e m o t o r i s b a d

!

L o c a t e c o n n e c t o r s a b o v e 7 a n d 4 o ' c l o s k p o s t i o n s

!

!

!

(

R e p l a c e u n l e s s o n e a n a u t m o t h o r i o r o z e d f c o n t r o l m o d e r e p l a c e m e n t ) l n u m b e r w i t h a n o t h e r

U s e h i g h p r e s s u r e d r o p f i l t e r s .

S o m e h a v e 1 / 2 " H

2

O d r o p !

U s e r e s t r i c t e d r e t u r n s

Manual 2100-317

Page 31

S

M o t

!

!

!

S t a y s a t l o w C F M h e a t C F M d e s p i t e s y s s t e m c a ll f o r c o o l o r

!

!

Y M P T o r

O M s t a r t s

" H u n t s " o r

S t a y s a t b u t

V a r i e s u p a n d e r r a t i c a l l y d o w n o r i n t e r m i t t e n t p u f f s " a t h i g h C R M ( s p e e d ) h i g h C F M

B l o w e r w o n ' t r u n s s h u t o f f

C A U S E / P R O C E D U R E

!

!

!

!

!

C h e c k il n e v o l t a g e f o r v a r i a t i o n o r " s a g "

C h e c k l o w v a p p il c a t i o n s o l t a g e c o n n e c t i o n s ( G , Y , W , R , C ) a t u n s e

C h e c a t k e d

" B p i k " n s f o r i n e r m o t o r r a t i c h a r n

C F M e c s s o m c o n n e m a n d c t o r

( i n s v a r i a b l e m o t o r ; s p e e d

C h e c k o u t s y s t e m c o n t r o l s t h e r m o s t a t ?

P e r f o r m M o i s t u r e C h e c k

!

D o e s r e m o v i n g p a n e l o r f i l t e r r e d u c e " p u f f i n g " ?

– R e d u c e r e s t r i c t i o n

– R e d u c e m a x i m u m a i r f l o w

!

C h e c k l o w v o l t a g e ( t h e r m o s t a t ) w i r e s a n d c o n n e c t i o n s

!

!

V e r i f y f a n i s c o m p l e t e n o t i n d a l a y m o d e w a i t u n t i l d e l a y i s

" R " m i s s i n g / n o t c o n n e c t e d a t m o t o r

P e r f o r m m o t o r / c o n t r o l r e p l a c e m e n t c h e c k

!

!

" R " m i s s i n g / n o t c o n n e c t e d a t m o t o r

I s f a n i n d a l a y m o d e ?

w a i t u n t i l d e l a y t i m e c o m p l e t e

!

C u r r e n t l e a k a g e f r o m c o n t r o l s i n t o G , Y o r W ?

– C h e c r e l a y k f o r T r i a c s w i t c h e d t h e r m o s t a t o r s o il d s t a t e

S

!

D

!

!

Y M

O

P T

E x c e s

A i r

S i z e

O N s i v e t h e n o

N o i s e i s e e q u p m e n t w i s e l y

C h e c k o r i e n c o n n e c t o r s t a t i o n b e f o r e i n s e r t i n g m o t o r

C A U S E

!

D e t e r

/ P R O C E m i n e i f i t

D U R E i s a i r n o i s e , c a b i n e t ,

I n t e r v i e w c u s t o m e r i f n e c e s s r y .

d u c t o r m o t o r n o i s e .

!

H i g h s t a t i c c r e a t i n g h i g h b l o w e r s p e e d ?

–

–

–

I s a i r f l o w s e t p r o p e r l y ?

D o e s

C h e c k r e m o v i n g f i l t e r

/ r e p l a c e f i l t e r c a u s e b l o w e r t o s l o w d o w n ?

U s e l o w p r e s s u r e d r o p f i l t e r

– C h e c k / c o r r e c t d u c t r e s t i r c t i o n s

D O N ' T

!

!

O

P l v u e r g s i z e s y s t e m i n p o w e r t h e n c o m p e n s a t e w i t h l o w c o n n e c t o r b a c k w a r d s a i r f l o w

!

F o r c e p l u g s

M O I S T U R E C H E C K P R O C E D U R E

!

!

C

A o r r n n e c a n g e t o h r s a r a r n e e o r i e s s e s n t e d w i t h

" d

" d r o w i p l n " o o p " u n d e r m o t o r

!

C o n d e n s t e d r a i n p l u g g e d ?

!

!

!

C h e c k f o r l o w a i r f l o w ( t o o m u c h l a t e n t c a p a c i t y )

C

C h h e e c c k k f o a n r d u n p l d e u g r c h a l e a r g e d k s i n c o n r e d i u t r n t i o n d u c t s a n d c a b i n e t

!

!

!

C O M F O R T C H E C K P R O C E D U R E

!

!

C

L h o e w c s k t a p t i r o p c e r p r e a i r f l s s u r o w e f o s e r l t t o i n w g s e s t n o i s e

!

S e t l o w c o n t i n u o u s f a n C F M

U

U

T s s h e e e r h z u o m m i n i o s d i n g t a t s t i c a t o n n b t a r a n o d l d s l o

2 d c

s e a p e s t i i g o e d n n e

?

d c o f o o r il

I n g

C M u n i t s t h a t r e g u l a t e C F M

Manual 2100-317

Page 32

ACCESSORIES

ADD-ON DPM26A PUMP MODULE KIT

NOTE: This section applies only if a DPM26A Pump

Module is added. Refer to DPM26A instructions for complete installation details.

GENERAL

This high efficiency water source heat pump series was designed with a refrigerant to water heat exchanger commonly know as a desuperheater coil factory-installed for ease in installing optional DPMA pump module kit. The addition of this optional kit allows for heat recovery for hot water heating when connected to a home water heater. The amount of annual hot water supplied and thus additional energy cost savings will depend on the amount of hot water usage and the number of hours the heat pump operates. This pump kit is suitable for potable water.

INSTALLATION

1. Follow all local, state, and national codes applicable to the installation of the pump module kit.

2. Follow the installation instructions received with the DPM26A pump module kit.

3. Connect the water lines between the unit, pump module kit, and the water heater.

FIGURE 17

TYPICAL PUMP KIT CONNECTION TO UNIT

GSVS MODEL

DPM26A

WATER TO

WATER

HEATER

WATER TO UNIT

SERVICE

SHUTOFF VALVES

WATER FROM

WATER HEATER

SERVICE

SHUTOFF

VALVE

WATER FROM

PUMP KIT

MIS-1210

Manual 2100-317

Page 33

GROUND SOURCE HEAT PUMP

PERFORMANCE REPORT

This performance check report should be filled out by installer and retained with unit.

DATE

1.

UNIT:

Mfgr

THERMOSTAT:

Mfgr

2.

Person Reporting

3.

Company Reporting

4.

Installed By

5.

User’s (Owner’s) Name

Address

Model No.

Model No.

TAKEN BY:

Date Installed

S/N

P/N

6.

Unit Location

WATER SYSTEM INFORMATION

7.

Open Loop System (Water Well)

A.

If Open Loop where is water discharged?

8.

The following questions are for Closed Loop systems only

A.

Closed loop system designed by

B.

Type of antifreeze used

C.

System type: Series

D.

Pipe material

E.

Pipe Installed:

1. Horizontal

No. pipes in trench

2. Vertical

Closed Loop System

% Solution

Nominal Size

Parallel

Total length of pipe

Depth bottom pipe

Total length of bore hole ft ft ft

Manual 2100-317

Page 34

THE FOLLOWING INFORMATION IS NEEDED

TO CHECK PERFORMANCE OF UNIT.

Cooling

20.

21.

22.

23.

16.

17.

18.

19.

9.

10.

11.

12.

13.

14.

15.

FLUID SIDE DATA

Entering fluid temperature

Leaving fluid temperature

Entering fluid pressure

Leaving fluid pressure

Pressure drop through coil

Gallons per minute through the water coil

Liquid or discharge line pressure

Suction line pressure

Voltage at compressor (unit running)

Amperage draw at line side of contactor

Amperage at compressor common terminal

* Suction line temperature 6” from compressor

* Superheat at compressor

* Liquid line temperature at metering device

* Coil subcooling

24.

25.

26.

27.

28.

29.

30.

INDOOR SIDE DATA

Dry bulb temperature at air entering indoor coil

Wet bulb temperature of air entering indoor coil

Dry bulb temperature of air leaving indoor coil

Wet bulb temperature of air leaving indoor coil

* Supply air static pressure (packaged unit)

* Return air static pressure (packaged unit)

Other information about installation

Cooling

** Heating

F

F

F

F

A

A

PSIG

V

F

F

PSIG

PSIG

PSIG

GPM

PSIG

** Heating

F

F

F

F

WC

WC

** When performing a heating test insure that 2

nd

stage heat is not activated

* Items that are optional

Manual 2100-317

Page 35

Manual 2100-317

Page 36