International comfort products RHS150H0CA0AAA RHS Series 12.5 Tons 230V Commercial Packaged Gas/Electric Unit Use and Care Manual

RHS Series

3 to 8.5 Ton

Package Electric Heat Pump Units

With R--410A Refrigerant

3 to 6 Ton

7--1/2 to 8--1/2 Ton

TABLE OF CONTENTS

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . .

2

UNIT ARRANGEMENT AND ACCESS . . . . . . . . . . . . . . .

3

WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PRE--START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

40

42

SUPPLY FAN (BLOWER) SECTION . . . . . . . . . . . . . . . . .

4

HEAT PUMP REFRIGERATION SYSTEM . . . . . . . . . . . .

8

R--410A REFRIGERANT . . . . . . . . . . . . . . . . . . . . . . . . .

COOLING CHARGING CHARTS . . . . . . . . . . . . . . . . . .

CONVENIENCE OUTLETS . . . . . . . . . . . . . . . . . . . . . . .

HEAT PUMP CONTROLS . . . . . . . . . . . . . . . . . . . . . . . .

13

14

19

19

PROTECTIVE CONTROLS . . . . . . . . . . . . . . . . . . . . . . .

COMMERCIAL DEFROST CONTROL . . . . . . . . . . . . .

20

21

ELECTRIC HEATERS . . . . . . . . . . . . . . . . . . . . . . . . . . .

SMOKE DETECTORS . . . . . . . . . . . . . . . . . . . . . . . . . . .

ECONOMIZER SYSTEMS . . . . . . . . . . . . . . . . . . . . . . .

24

26

32

START-UP, GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . .

OPERATING SEQUENCE . . . . . . . . . . . . . . . . . . . . . . . .

FASTENER TORQUE VALUES . . . . . . . . . . . . . . . . . . .

APPENDIX I. MODEL NUMBER SIGNIFICANCE . . . . .

APPENDIX II. PHYSICAL DATA . . . . . . . . . . . . . . . . . . .

APPENDIX III. FAN PERFORMANCE . . . . . . . . . . . . . .

42

43

46

47

48

50

APPENDIX IV. ELECTRICAL INFORMATION . . . . . . .

APPENDIX V. WIRING DIAGRAM LIST . . . . . . . . . . . .

60

68

APPENDIX VI. MOTORMASTER SENSOR

LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

UNIT START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . .

69

71

Service and Maintenance Instructions

516 08 2301 00

6/25/09

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install, repair, or service air-conditioning equipment. Untrained personnel can perform the basic maintenance functions of replacing filters. Trained service personnel should perform all other operations.

When working on air-conditioning equipment, observe precautions in the literature, tags and labels attached to the unit, and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for unbrazing operations.

Have fire extinguishers available for all brazing operations.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions attached to the unit. Consult local building codes and National

Electrical Code (NEC) for special requirements.

Recognize safety information. This is the safety--alert symbol . When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, and

CAUTION. These words are used with the safety--alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death.

WARNING signifies a hazard which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

!

WARNING

ELECTRICAL OPERATION HAZARD

Failure to follow this warning could result in personal injury or death.

Before performing service or maintenance operations on unit, turn off main power switch to unit. Electrical shock and rotating equipment could cause injury.

!

WARNING



Units with convenience outlet circuits may use multiple disconnects. Check convenience outlet for power status before opening unit for service.

Locate its disconnect switch, if appropriate, and open it. Tag--out this switch, if necessary.

!

WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could cause personal injury, death and/or equipment damage.

R--410A refrigerant systems operate at higher pressures than standard R--22 systems. Do not use R--22 service equipment or components on

R--410A refrigerant equipment.

!

WARNING

PERSONAL INJURY AND ENVIRONMENTAL

HAZARD

Failure to follow this warning could cause personal injury or death. Relieve pressure and recover all refrigerant before system repair or final unit disposal. Wear safety glasses and gloves when handling refrigerants. Keep torches and other ignition sources away from refrigerants and oils.

!

CAUTION

CUT HAZARD

Failure to follow this caution may result in personal injury.

Sheet metal parts may have sharp edges or burrs.

Use care and wear appropriate protective clothing, safety glasses and gloves when handling parts and servicing air conditioning units.

2

FIGURE 1

FIGURE 2

UNIT ARRANGEMENT AND ACCESS

General

Fig. 1 and Fig. 2 show general unit arrangement and access locations.

Typical Access Panel Location

Blower Access Panel Location

(3 to 6 Ton)

(7--1/2 to 10 Ton)

Routine Maintenance

These items should be part of a routine maintenance program, to be checked every month or two, until a specific schedule for each can be identified for this installation:

Quarterly Inspection (and 30 days after initial start)

S

Return air filter replacement

S

Outdoor hood inlet filters cleaned

S

Belt tension checked

S

Belt condition checked

S

Pulley alignment checked

S

Fan shaft bearing locking collar tightness checked

S

Outdoor coil cleanliness checked

S

Condensate drain checked

Seasonal Maintenance

These items should be checked at the beginning of each season (or more often if local conditions and usage patterns dictate):

Air Conditioning/Heat Pump

S

Outdoor fan motor mounting bolts tightness

S

Compressor mounting bolts

S

Outdoor fan blade positioning

S

Control box cleanliness and wiring condition

S

Wire terminal tightness

S

Refrigerant charge level

S

Indoor coil cleaning

S

Supply blower motor amperage

Electric Heating

S

Power wire connections

S

Fuses ready

S

Manual--reset limit switch is closed

Economizer or Outside Air Damper

S

Inlet filters condition

S

Check damper travel (economizer)

S

Check gear and dampers for debris and dirt

Air Filters and Screens

Each unit is equipped with return air filters. If the unit has an economizer, it will also have an outside air screen. If a manual outside air damper is added, an inlet air screen will also be present.

Each of these filters and screens will need to be periodically replaced or cleaned.

Return Air Filters

Return air filters are disposable fiberglass media type.

Access to the filters is through the small lift--out panel located on the rear side of the unit, above the evaporator/return air access panel. (See Fig. 1.)

To remove the filters:

1. Grasp the bottom flange of the upper panel.

2. Lift up and swing the bottom out until the panel disengages and pulls out.

3. Reach inside and extract the filters from the filter rack.

4. Replace these filters as required with similar replacement filters of same size.

To re--install the access panel:

1. Slide the top of the panel up under the unit top panel.

2. Slide the bottom into the side channels.

3. Push the bottom flange down until it contacts the top of the lower panel (or economizer top).

IMPORTANT: DO NOT OPERATE THE UNIT WITHOUT

THESE FILTERS!

Outside Air Hood

Outside air hood inlet screens are permanent aluminum--mesh type filters. Check these for cleanliness.

Remove the screens when cleaning is required. Clean by washing with hot low--pressure water and soft detergent and replace all screens before restarting the unit. Observe the flow direction arrows on the side of each filter frame.

Economizer Inlet Air Screen

This air screen is retained by spring clips under the top edge of the hood. (See Fig. 3.)

3

FIGURE 3

Filter Installation

17 1/4”

DIVIDER

OUTSIDE

AIR

CLEANABLE

ALUMINUM

FILTER

FILTER

HOOD

BAROMETRIC

RELIEF

FILTER

CLIP

To remove the filter, open the spring clips. Re--install the filter by placing the frame in its track, then closing the spring clips.

Manual Outside Air Hood Screen

This inlet screen is secured by a retainer angle across the top edge of the hood. (See Fig. 4.)

FIGURE 4

Screens Installed on Outdoor Air Hood

(7.5 to 8.5 Ton Shown)

SUPPLY FAN (BLOWER) SECTION

!

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause personal injury or death.

Before performing service or maintenance operations on the fan system, shut off all unit power and tag--out the unit disconnect switch. Do not reach into the fan section with power still applied to unit.

Supply Fan (Direct--Drive)

For unit sizes 036 -- 060 (3--5 Ton), the Standard Static supply fan system consists of a direct--drive forward--curved centrifugal blower wheel attached to the motor shaft. The motor has taps to provide the servicer with the selection of one of five motor torque/speed ranges to best match wheel performance with attached duct system. See Fig. 5 Direct--Drive Fan Assembly) and

Fig. 6 (EMC Motor Connectors).

FIGURE 5

Direct Drive Supply Fan Assembly

EMC Motor

95°

Motor Plug Position

(95° from vertical)

EMC Power

Transformer

(460, 575v)

To remove the screen, loosen the screws in the top retainer and slip the retainer up until the filter can be removed. Re--install by placing the frame in its track, rotating the retainer back down and tighten all screws.

FIGURE 6

EMC Motor Connectors

L2

YEL

L1

BLU

Gnd

GRN/YEL

C L G N

Com

BRN

Motor

Power

Connections

Speed

Taps

1 2 3 4 5

VIO

Default Connection

4

FIGURE 7

EMC Unit Wiring

460, 575-v Units

ECM Motor – The direct--drive motor is an X13

Electronically Commutated motor (ECM). An ECM contains electronic circuitry to convert single--phase line

AC voltage into a 3--phase DC voltage to power the motor circuit. The motor circuit is a DC brushless design with a permanent magnet rotor. On the X13 design, the electronic circuitry is integral to the motor assembly and cannot be serviced or replaced separately.

208/230-v Units

Table 1 – RHS Standard Static Motor Tap Programing

(percent of full--load torque)

Unit Size

036

048

060

Tap 1

32

46

73

Tap 2

38

58

82

Factory Default: Tap 1 (VIO)

Tap 3

45

61

85

Tap 4

50

69

90

Tap 5

100

100

100

208/230--v units use a 230--v motor. 460--v units use a

230--v motor with a stepdown transformer (mounted on the end of the fan housing, see Fig. 5). 575--v units use a

460--v motor with an autotransformer. Motor power voltage is connected to motor terminals L and N (see

Fig.6 and Fig. 7); ground is connected at terminal G. The motor power voltage is ALWAYS present; it is not switched off by a motor contactor.

Motor operation is initiated by the presence of a 24--v control signal to one of the five motor communications terminals. When the 24--v signal is removed, the motor will stop. The motor control signal is switched by the defrost board’s IFO output.

To select another speed:

1. Disconnect main power to the unit.

2. Remove the motor signal lead (VIO) at the motor communications terminal.

3. Reconnect the motor signal lead to the desired speed terminal.

4. Connect main power to the unit.

Motor “rocking” on start--up – When the motor first starts, the rotor (and attached wheel) will “rock” back and forth as the motor tests for rotational direction. Once the correct rotation direction is determined by the motor circuitry, the motor will ramp up to specified speed. The

“rocking” is a normal operating characteristic of ECM motors.

Evaluating motor speed – The X13 ECM is a constant torque motor design. The motor speed is adjusted by the motor control circuitry to maintain the programmed shaft torque. Consequently there is no specific speed value assigned to each control tap setting. At the Position 5 tap, the motor speed is approximately 1050 RPM (17.5 r/s) but it will vary depending on fan wheel loading.

Selecting speed tap – The five communications terminals are each programmed to provide a different motor torque output. See Table 1. Factory default tap selection is

Position 1 for lowest torque/speed operation.

Troubleshooting the ECM motor – Troubleshooting the

X13 ECM requires a voltmeter.

1. Disconnect main power to the unit.

2. Remove the motor power plug (including the control

BRN lead) and VIO control signal lead at the motor terminals.

3. Restore main unit power.

4. Check for proper line voltage at motor power leads

BLK (from L terminal) and YEL (from N terminal).

5

Unit Voltage

208/230

460

575

Table 2 – Motor Test Volts

Motor Voltage

230

230

460

Min---Max Volts

190---250

210---250

420---500

5. Apply a jumper at unit control terminals R to G to initiate a demand for motor operation. Check for 24--v output at defrost board terminal IFO.

6. Check for proper control signal voltage at motor signal leads VIO and BRN. Signal should be 22 to 28--v.

7. Disconnect unit main power.

8. Reconnect motor power and control signal leads at the motor terminals.

9. Restore unit main power.

Motor should start and run. If it does not, remove the motor assembly. Replace with same motor part number; do not substitute with an alternate design as torque/speed programming will not be same as on original factory motor.

Replacing the ECM Motor – Before removing the ECM belly--band mounting ring, measure the distance between the base of the motor shaft and the edge of the mounting ring. Remove the motor mounting band and transfer to the replacement motor. Position the mounting band at distance measured in first step. Snug the mounting bolt but do not tighten yet.

Insert the motor shaft into the fan wheel hub. Then secure the three motor mount arms to the support cushions.

Torque the arm mounting screws to 60 in--lbs (6.8 N--m).

Center the fan wheel in the fan housing. Torque the fan wheel hub setscrew to 120 in--lbs (13.6 N--m).

Ensure the motor terminals are located at a position below the 3 o’clock position (see Fig. 5). Tighten the motor belly--band bolt to 80 in--lbs (9.0 N--m).

Supply Fan (Belt--Drive)

The belt--drive supply fan system consists of a forward--curved centrifugal blower wheel on a solid shaft with two concentric type bearings, one on each side of the blower housing. A fixed--pitch driven pulley is attached to the fan shaft and an adjustable--pitch driver pulley is on the motor. The pulleys are connected using a “V” type belt. (See Fig. 8.)

FIGURE 8

Belt Drive Motor Monitoring

Belt

Check the belt condition and tension quarterly. Inspect the belt for signs of cracking, fraying or glazing along the inside surfaces. Check belt tension by using a spring--force tool (such as Browning’s Part Number “Belt

Tension Checker” or equivalent tool); tension should be

6--lbs at a

5

/

8

--in. deflection when measured at the centerline of the belt span. This point is at the center of the belt when measuring the distance between the motor shaft and the blower shaft.

NOTE: Without the spring--tension tool, place a straight edge across the belt surface at the pulleys, then deflect the belt at mid--span using one finger to a deflection.

1

/

2

--in.

Adjust belt tension by loosening the motor mounting plate front bolts and rear bolt and sliding the plate toward the fan (to reduce tension) or away from fan (to increase tension). Ensure the blower shaft and the motor shaft are parallel to each other (pulleys aligned). Tighten all bolts when finished.

To replace the belt:

1. Use a belt with same section type or similar size. Do not substitute a “FHP” type belt. When installing the new belt, do not use a tool (screwdriver or pry--bar) to force the belt over the pulley flanges, this will stress the belt and cause a reduction in belt life.

2. Loosen the motor mounting plate front bolts and rear bolts.

3. Push the motor and its mounting plate towards the blower housing as close as possible to reduce the center distance between fan shaft and motor shaft.

4. Remove the belt by gently lifting the old belt over one of the pulleys.

5. Install the new belt by gently sliding the belt over both pulleys and then sliding the motor and plate away from the fan housing until proper tension is achieved.

6. Check the alignment of the pulleys, adjust if necessary.

7. Tighten all bolts.

8. Check the tension after a few hours of runtime and re--adjust as required.

Adjustable--Pitch Pulley on Motor

The motor pulley is an adjustable--pitch type that allows a servicer to implement changes in the fan wheel speed to match as--installed ductwork systems. The pulley consists of a fixed flange side that faces the motor (secured to the motor shaft) and a movable flange side that can be rotated around the fixed flange side that increases or reduces the pitch diameter of this driver pulley. (See Fig.

9.)

6

FIGURE 9

Supply Fan Pulley Adjustment

FIGURE 10

Tightening Locking Collar

As the pitch diameter is changed by adjusting the position of the movable flange, the centerline on this pulley shifts laterally (along the motor shaft). This creates a requirement for a realignment of the pulleys after any adjustment of the movable flange. Also reset the belt tension after each realignment.

Check the condition of the motor pulley for signs of wear.

Glazing of the belt contact surfaces and erosion on these surfaces are signs of improper belt tension and/or belt slippage. Pulley replacement may be necessary.

To change fan speed:

1. Shut off unit power supply.

2. Loosen belt by loosening fan motor mounting nuts.

(See Fig. 8.)

3. Loosen movable pulley flange setscrew. (See Fig. 9.)

4. Screw movable flange toward fixed flange to increase speed and away from fixed flange to decrease speed.

Increasing fan speed increases load on motor. Do not exceed maximum speed specified.

5. Set movable flange at nearest keyway of pulley hub and tighten setscrew to torque specifications.

To align fan and motor pulleys:

1. Loosen fan pulley setscrews.

2. Slide fan pulley along fan shaft. Make angular alignment by loosening motor from mounting.

3. Tighten fan pulley setscrews and motor mounting bolts to torque specifications.

4. Recheck belt tension.

Bearings

This fan system uses bearings featuring concentric split locking collars. The collars are tightened through a cap screw bridging the split portion of the collar. The cap screw has a Torx T25 socket head. To tighten the locking collar: Hold the locking collar tightly against the inner race of the bearing and torque the cap screw to 65--70 in--lb

(7.4--7.9 Nm). See Fig. 10.

Motor

When replacing the motor, also replace the external--tooth lock washer (star washer) under the motor mounting base; this is part of the motor grounding system. Ensure the teeth on the lock washer are in contact with the motor’s painted base. Tighten motor mounting bolts to

120 +/-- 12 in--lbs.

Changing fan wheel speed by changing pulleys: The horsepower rating of the belt is primarily dictated by the pitch diameter of the smaller pulley in the drive system

(typically the motor pulley in these units). Do not install a replacement motor pulley with a smaller pitch diameter than provided on the original factory pulley. Change fan wheel speed by changing the fan pulley (larger pitch diameter to reduce wheel speed, smaller pitch diameter to increase wheel speed) or select a new system (both pulleys and matching belt(s)).

Before changing pulleys to increase fan wheel speed, check the fan performance at the target speed and airflow rate to determine new motor loading (bhp). Use the fan performance tables or use the Packaged Rooftop Builder software program. Confirm that the motor in this unit is capable of operating at the new operating condition. Fan shaft loading increases dramatically as wheel speed is increased.

To reduce vibration, replace the motor’s adjustable pitch pulley with a fixed pitch pulley (after the final airflow balance adjustment). This will reduce the amount of vibration generated by the motor/belt--drive system.

7

HEAT PUMP REFRIGERATION

SYSTEM

!

WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could cause personal injury, death and/or equipment damage.

This system uses R--410A

R refrigerant which has higher pressures than R--22 and other refrigerants.

No other refrigerant may be used in this system.

Gauge set, hoses, and recovery system must be designed to handle R--410A refrigerant. If unsure about equipment, consult the equipment manufacturer.

Outdoor Coil

The RHS outdoor coil is fabricated with round tube copper hairpins and plate fins of various materials and/or coatings (see “Appendix I -- Model Number Significance” to identify the materials provided in this unit). All unit sizes use composite--type two--row coils. Composite two--row coils are two single--row coils fabricated with a single return bend end tubesheet.

Indoor Coil

The indoor coil is traditional round--tube, plate--fin technology. Tube and fin construction is of various optional materials and coatings (see Model Number

Format). Coils are multiple--row.

Outdoor Coil Maintenance and Cleaning

Recommendation

Routine cleaning of coil surfaces is essential to maintain proper operation of the unit. Elimination of contamination and removal of harmful residues will greatly increase the life of the coil and extend the life of the unit. The following maintenance and cleaning procedures are recommended as part of the routine maintenance activities to extend the life of the coil.

Remove Surface Loaded Fibers

Surface loaded fibers or dirt should be removed with a vacuum cleaner. If a vacuum cleaner is not available, a soft non--metallic bristle brush may be used. In either case, the tool should be applied in the direction of the fins.

Coil surfaces can be easily damaged (fin edges can be easily bent over and damage the coating of a protected coil) if the tool is applied across the fins.

NOTE: Use of a water stream, such as a garden hose, against a surface loaded coil will drive the fibers and dirt into the coil. This will make cleaning efforts more difficult.

Surface loaded fibers must be completely removed prior to using low velocity clean water rinse.

Periodic Clean Water Rinse

A periodic clean water rinse is very beneficial for coils that are applied in coastal or industrial environments.

However, it is very important that the water rinse is made with very low velocity water stream to avoid damaging the fin edges. Monthly cleaning as described below is recommended.

!

CAUTION

PERSONAL INJURY AND UNIT DAMAGE

HAZARD

Failure to follow this caution may result in personal injury or equipment damage.

Only approved cleaning is recommended.

Routine Cleaning of Indoor Coil Surfaces

Periodic cleaning with environmentally sound coil cleaner is essential to extend the life of coils. This cleaner is available from our FAST parts as part number 1178704 for a one gallon container, and part number 1178705 for a 5 gallon container. It is recommended that all coils, including standard aluminum, pre--coated, copper/copper or E--coated coils be cleaned with a environmentally sound coil cleaner as described below. Coil cleaning should be part of the unit’s regularly scheduled maintenance procedures to ensure long life of the coil.

Failure to clean the coils may result in reduced durability in the environment.

Avoid the use of

S coil brighteners

S acid cleaning prior to painting

S high pressure washers

S poor quality water for cleaning

Environmentally sound coil cleaner is nonflammable, hypoallergenic, non bacterial, and a USDA accepted biodegradable agent that will not harm the coil or surrounding components such as electrical wiring, painted metal surfaces, or insulation. Use of non--recommended coil cleaners is strongly discouraged since coil and unit durability could be affected.

Clean coil as follows:

1. Turn off unit power, tag disconnect.

2. Remove top panel screws on outdoor coil end of unit.

3. Remove coil corner post. See Fig. 11. To hold top panel open, place coil corner post between top panel and center post. See Fig. 12.

8

FIGURE 11

Cleaning Condener Coil (Size 036 -- 060 shown)

OUTDOOR

COIL

FIGURE 12

Propping Up Top Panel

4. For Sizes 036--072: Remove screws securing coil to compressor plate and compressor access panel.

5. For Sizes 090--102: Remove fastener holding coil sections together at return end of condenser coil.

Carefully separate the outdoor coil section 3 to 4 in.

from the inner coil section. See Fig. 13.

FIGURE 13

Separating Coil Sections

OUTDOOR

COIL

6. Use a water hose or other suitable equipment to flush down between the 2 coil sections to remove dirt and debris. Clean the outer surfaces with a stiff brush in the normal manner.

7. Secure inner and outer coil rows together with a field--supplied fastener.

8. Reposition the outer coil section and remove the coil corner post from between the top panel and center post. Reinstall the coil corner post and replace all screws.

Environmentally Sound Coil Cleaner Application

Equipment

S

2--1/2 gallon garden sprayer

S

Water rinse with low velocity spray nozzle

!

CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in corrosion and damage to the unit.

Harsh chemicals, household bleach or acid or basic cleaners should not be used to clean outdoor or indoor coils of any kind. These cleaners can be very difficult to rinse out of the coil and can accelerate corrosion at the fin/tube interface where dissimilar materials are in contact.

If there is dirt below the surface of the coil, use a environmentally sound coil cleaner

!

CAUTION


Failure to follow this caution may result in reduced unit performance.

High velocity water from a pressure washer, garden hose, or compressed air should never be used to clean a coil. The force of the water or air jet will bend the fin edges and increase airside pressure drop.

Environmentally Sound Coil Cleaner Application

Instructions

1. Proper eye protection such as safety glasses is recommended during mixing and application.

2. Remove all surface loaded fibers and dirt with a vacuum cleaner as described above.

3. Thoroughly wet finned surfaces with clean water and a low velocity garden hose, being carefull not to bend fins.

4. Mix environmentally sound coil cleaner in a 2

1

/

2 gallon garden spryer according to the instructions included with the cleaner. The optimum solution temperature is 100°F (38°C).

NOTE: Do NOT USE water in excess of 130°F (54°C), as the enzymatic activity will be destroyed.

5. Thoroughly apply environmentally sound coil cleaner solution to all coil surfaces including finned area, tube sheets and coil headers.

6. Hold garden sprayer nozzle close to finned areas and apply cleaner with a vertical, up--and--down motion.

Avoid spraying in horizontal pattern to minimize potential for fin damage.

7. Ensure cleaner thoroughly penetrates deep into finned areas.

8. Interior and exterior finned areas must be thoroughly cleaned.

9

9. Finned surfaces should remain wet with cleaning solution for 10 minutes.

10. Ensure surfaces are not allowed to dry before rinsing.

Reapply cleaner as needed to ensure 10--minute saturation is achieved.

11. Thoroghly rinse all surfaces with low velocity clean water using downward rinsing motion of water spray nozzle. Protect fins from damage from the spray nozzle.

Indoor Coil

Cleaning the Indoor Coil

1. Turn unit power off. Install lockout tag. Remove indoor coil access panel.

2. If economizer or two--position damper is installed, remove economizer by disconnecting Molex plug and removing mounting screws.

3. Slide filters out of unit.

4. Clean coil using a commercial coil cleaner or dishwasher detergent in a pressurized spray canister.

Wash both sides of coil and flush with clean water.

For best results, back--flush toward return--air section to remove foreign material. Flush condensate pan after completion.

5. Reinstall economizer and filters.

6. Reconnect wiring.

7. Replace access panels.

FIGURE 14

Filter

Drier

Typical Unit Piping Schematic (102 unit with 4--row indoor coil)

LPS/LOC

2B

Refrigeration System Components

Each heat pump refrigeration system includes a compressor, accumulator, reversing valve, dual--function outdoor coil with vapor header check valve, cooling liquid line with filter drier and check valve, dual--function indoor coil with vapor header check valve, and heating liquid line with check valve and strainer. Unit sizes 036--072 have a single compressor--circuit; unit sizes 090 and 102 have two compressor--circuits. See Fig. 14 for typical unit piping schematic (unit size 102 (4--row indoor coil) with two compressor--circuits is depicted).

Dual--function outdoor and indoor coils are designed to provide parallel coil circuits during evaporator--function operation and converging coil circuits during condenser--function operation.

Refrigerant flow metering in the evaporator--function sequence is provided by multiple fixed--bore metering devices that are located in the tee nipples between the liquid header and the entrance to each coil circuit. The

Thel metering device is swaged into the nipple tube between the liquid header end and the side--port tube.

See Fig. 15. During evaporator--function operation, flow is straight through the nipple and into each evaporator circuit. Flow continues through the parallel evaporator circuits and into the vapor header.

1B Cooling Liquid Lines

Acutrol

DFT 1 Acutrol

1A

2D

DFT 2

HPS

Comp 2

Outdoor Coil

2A

Heating Mode Liquid Lines

2C

HPS

Comp 1

1C Strainer

1D

Indoor Coil

10

FIGURE 15

Heat Pump -- Flow as Evaporator Function

To

Evaporator

Coil

Circuits

Metering

Orifice

FIGURE 17

Heat Pump -- Flow as Condenser Function/

Entering Second Pass

To

Condensing

Circuit

From

Liquid

Header

Converging circuit flow in the condenser--function operation is accomplished with the check valve in the vapor header and the liquid transfer header connected to the side ports on all but one of the tee nipples in each circuit. During condenser--function operation, hot gas from the compressor discharge enters the header until it reaches the check valve which blocks further flow. The hot gas exits the header through the tubes above the check valve and enters these coil circuits. At the outlet of these desuperheating and condensing circuits, the refrigerant enters the tees from the coil end. The refrigerant exits the tee at the side port and enters the liquid transfer header (see Fig. 16). The refrigerant moves through the liquid transfer header and exits through the remaining tubes, through the side ports on the tees (see

Fig. 17) and back into the coil circuits where additional condensing occurs. These circuits exit into the vapor header behind the check valve and exit through the remaining tube on the vapor header. In this last pass through the coil, the refrigerant is subcooled. Subcooled liquid exits at the last tee (see Fig. 18) where the side port is connected to the specific mode liquid line.

FIGURE 16


Exiting First Pass

From

Condenser

Coil Circuits

To

Transfer

Header

From

Transfer

Header

FIGURE 18


Exiting Subcooler Pass

DFT Location

(Outdoor Coils only)

From

Subcooler

Circuit

To

Liquid

Line

Each liquid line has a check valve to prevent backflow through the liquid line in its opposite mode. This ensures correct flow direction through filter driers and strainers and prevents emptying of off--mode liquid lines into evaporator--function coil circuits.

Reversing Valve and Check Valve Position

See Fig. 14 on page 10.

Table 3 – Cooling Mode (each circuit)

Component

Reversing Valve

Check Valve A

Check Valve B

Check Valve C

Check Valve D

Status/Position

Energized

Closed

Open

Closed

Open

Table 4 – Heating Mode (each circuit)

Component

Reversing Valve

Check Valve A

Check Valve B

Check Valve C

Check Valve D

Status/Position

De--energized

Open

Closed

Open

Closed

11

Table 5 – Defrost Mode

RHS036---102 / Circuit 2

Component

Defrost Thermostat

Outdoor Fan(s)

Reversing Valve

Check Valve A

Check Valve B

Check Valve C

Check Valve D

Status/Position

Closed

Off

Energized

Closed

Open

Closed

Open

Troubleshooting Refrigerant Pressure Problems and Check Valves

Refer to Fig. 14, on page 10, and the Cooling Mode and

Heating Mode tables (Tables 3 and 4) on page 11.

Coil Metering Devices

The metering devices are multiple fixed–bore devices swaged into the horizontal outlet tubes from the liquid header, located at the entrance to each evaporator coil circuit path. These are non–adjustable. Service requires replacing the entire liquid header assembly.

Check for possible blockage of one or more of these metering devices by creating a low load condition on the evaporator--function coil and then observing the frosting pattern on the finned portion of the coil.

To check the indoor coil, disconnect the supply fan signal

(036--072 direct--drive fans) or contactor (IFC) coil, then

FIGURE 19

CoreMax Access Port Assembly

SEAT

1/2-20 UNF RH

0.596

30°

5/8” HEX

.47

start the circuit in a Cooling Mode (jumper R to Y1 or Y2) and observe the frosting pattern on the face of the indoor coil. A frost pattern should develop uniformly across the face of the indoor coil starting at each tube at the nipple locations.

To check the outdoor coil, disconnect the outdoor fan motor. Start the circuit in a Heating Mode (jumper R to W1 or W2) and observe the frost pattern on the face of the outdoor coil.

Failure to develop frost at an outlet tube can indicate a plugged or a missing orifice.

Refrigerant System Pressure Access Ports

There are two access ports in each circuit -- on the suction tube near the compressor and on the discharge tube near the compressor. These are brass fittings with black plastic caps. The hose connection fittings are standard 1/4 SAE Male Flare couplings.

The brass fittings are two--piece High Flow valves, with a receptacle base brazed to the tubing and an integral spring--closed check valve core screwed into the base.

(See Fig. 19.) This check valve is permanently assembled into this core body and cannot be serviced separately; replace the entire core body if necessary. Service tools are available that allow the replacement of the check valve core without having to recover the entire system refrigerant charge. Apply compressor refrigerant oil to the check valve core’s bottom o--ring. Install the fitting body with 96 +/--10 in--lbs of torque; do not overtighten.

CORE

(Part No. EC39EZ067)

WASHER

O-RING

1/2" HEX

This surface provides a metal to metal seal when torqued into the seat. Appropriate handling is required to not scratch or dent the surface.

45°

DEPRESSOR PER ARI 720

+.01/-.035

FROM FACE OF BODY

7/16-20 UNF RH

12

R--410A REFRIGERANT

This unit is designed for use with R--410A refrigerant. Do not use any other refrigerant in this system.

R--410A refrigerant is provided in pink (rose) colored cylinders. These cylinders are available with and without dip tubes; cylinders with dip tubes will have a label indicating this feature. For a cylinder with a dip tube, place the cylinder in the upright position (access valve at the top) when removing liquid refrigerant for charging. For a cylinder without a dip tube, invert the cylinder (access valve on the bottom) when removing liquid refrigerant.

Because R--410A refrigerant is a blend, it is strongly recommended that refrigerant always be removed from the cylinder as a liquid. Admit liquid refrigerant into the system in the discharge line. If adding refrigerant into the suction line, use a commercial metering/expansion device at the gauge manifold; remove liquid from the cylinder, pass it through the metering device at the gauge set and then pass it into the suction line as a vapor. Do not remove R--410A refrigerant from the cylinder as a vapor.

Refrigerant Charge

Amount of refrigerant charge is listed on the unit’s nameplate. Refer to the GTAC2--5 Charging, Recovery,

Recycling and Reclamation training manual and the following procedures.

Unit panels must be in place when unit is operating during the charging procedure. If unit is equipped with a head pressure control device, bypass it to ensure full fan operation during charging.

Charge checking and adjustments must be made while the system is operating in Cooling only.

No Charge

Use standard evacuation techniques for R--410A refrigerant. After evacuating system, weigh in the specified amount of refrigerant.

Low--Charge Cooling

Using Cooling Charging Charts, Fig. 20 vary refrigerant until the conditions of the appropriate chart are met. Note the charging charts are different from type normally used.

Charts are based on charging the units to the correct superheat for the various operating conditions. Accurate pressure gauge and temperature sensing device are required. Connect the pressure gauge to the service port on the suction line. Mount the temperature sensing device on the suction line and insulate it so that outdoor ambient temperature does not affect the reading. Indoor--air cfm must be within the normal operating range of the unit.

To Use Cooling Charging Charts

Take the outdoor ambient temperature and read the suction pressure gauge. Refer to chart to determine what suction temperature should be. If suction temperature is high, add refrigerant. If suction temperature is low, carefully recover some of the charge. Recheck the suction pressure as charge is adjusted.

SIZE DESIGNATION

036

048

060

072

090

102

NOMINAL TONS

REFERENCE

3

4

5

6

7.5

8.5

EXAMPLE:

Model RHS036

Outdoor Temperature . . . . . . . . . . .

85_F (29_C)

Suction Pressure . . . . . . . . .

140 psig (965 kPa)

Suction Temperature should be

Compressors

Lubrication

. .

55_F (13_C)

Compressors are charged with the correct amount of oil at the factory.

!

CAUTION


Failure to follow this caution may result in damage to components.

The compressor is in a R--410A refrigerant system and uses a polyolester (POE) oil. This oil is extremely hygroscopic, meaning it absorbs water readily. POE oils can absorb 15 times as much water as other oils designed for HCFC and CFC refrigerants. Avoid exposure of the oil to the atmosphere.

Replacing Compressor

The compressor used with R--410A refrigerant contains a

POE oil. This oil has a high affinity for moisture. Do not remove the compressor’s tube plugs until ready to insert the unit suction and discharge tube ends.

Compressor mounting bolt torque is 65--75 in--lbs (7.3--8.5

Nm).

13

14

FIGURE 20

Cooling Charging Charts

COOLING CHARGING CHARTS

RHS036

RHS048

Figure 20 (cont.)


RHS060

RHS072

15

Figure 20 (cont.)


RHS090

RHS102

16

Compressor Rotation

!

CAUTION

PERSONAL INJURY HAZARD

Failure to follow this caution may result in personal injury.

Outdoor Fan Location

See Fig. 21.

1. Shut off unit power supply. Install lockout tag.

2. Remove condenser--fan assembly (grille, motor, and fan).

3. Loosen fan hub setscrews.

4. Adjust fan height as shown in Fig. 21.

5. Tighten setscrews to 84 in--lbs (9.5 Nm).

6. Replace condenser--fan assembly.

FIGURE 21

Outdoor Fan Adjustment

On 3--phase units with scroll compressors, it is important to be certain compressor is rotating in the proper direction. To determine whether or not compressor is rotating in the proper direction:

1. Connect service gauges to suction and discharge pressure fittings.

2. Energize the compressor.

3. The suction pressure should drop and the discharge pressure should rise, as is normal on any start--up.

NOTE: If the suction pressure does not drop and the discharge pressure does not rise to normal levels:

4. Note that the evaporator fan is probably also rotating in the wrong direction.

5. Turn off power to the unit.

6. Reverse any two of the unit power leads.

7. Reapply power to the compressor.

The suction and discharge pressure levels should now move to their normal start--up levels.

NOTE: When the compressor is rotating in the wrong direction, the unit makes an elevated level of noise and does not provide cooling.

Filter Drier

Replace whenever refrigerant system is exposed to atmosphere. Only use factory specified liquid--line filter driers with working pressures no less than 650 psig. Do not install a suction--line filter drier in liquid line. A liquid--line filter drier designed for use with R--410A refrigerant is required on every unit.

Conduit

0.14 in + 0.0 / -0.03

Troubleshooting Cooling System

Refer to Table 6 for additional troubleshooting topics.

17

Table 6 –

Heating and Cooling Troubleshooting

PROBLEM

Compressor and

Outdoor Fan

Will Not Start.

Compressor Will Not

Start But Outdoor

Fan Runs.

Compressor Cycles

(Other Than

Normally Satisfying

Thermostat).

Compressor Operates

Continuously.

Compressor Makes

Excessive Noise.

Excessive Head

Pressure.

Head Pressure

Too Low.

Excessive Suction

Pressure.

Suction Pressure

Too Low.

CAUSE

Power failure.

Fuse blown or circuit breaker tripped.

Defective thermostat, contactor, transformer, control relay, or capacitor.

Insufficient line voltage.

Incorrect or faulty wiring.

Thermostat setting too high.

High pressure switch tripped.

Low pressure switch tripped.

Freeze-up protection thermostat tripped.

Faulty wiring or loose connections in compressor circuit.

Call power company.

Replace component.

REMEDY

Replace fuse or reset circuit breaker. Determine root cause.

Determine cause and correct.

Check wiring diagram and rewire correctly.

Lower thermostat setting below room temperature.

See problem ‘‘Excessive head pressure.’’

Check system for leaks. Repair as necessary.

See problem ‘‘Suction pressure too low.’’

Check wiring and repair or replace.

Compressor motor burned out, seized, or internal overload open.

Defective run/start capacitor, overload, start relay.

One leg of 3-phase power dead.

Refrigerant overcharge or undercharge.

Defective compressor.

Insufficient line voltage.

Blocked outdoor coil or dirty air filter.

Defective run/start capacitor, overload, or start relay.

Defective thermostat.

Faulty outdoor-fan (cooling) or indoor-fan

(heating) motor or capacitor.

Determine cause. Replace compressor or allow enough time for internal overload to cool and reset.

Determine cause and replace compressor.

Replace fuse or reset circuit breaker. Determine cause.

Recover refrigerant, evacuate system, and recharge to nameplate.

Replace and determine cause.



Determine cause and replace.

Replace thermostat.

Replace.

Restriction in refrigerant system.

Dirty air filter.

Unit undersized for load.

Thermostat set too low (cooling).

Low refrigerant charge.

Air in system.

Outdoor coil dirty or restricted.

Compressor rotating in the wrong direction.

Locate restriction and remove.

Replace filter.

Decrease load or increase unit size.

Reset thermostat.

Locate leak; repair and recharge.

Recover refrigerant, evacuate system, and recharge.

Clean coil or remove restriction.

Reverse the 3-phase power leads as described in

Start-Up.

Dirty outside air or return air filter (heating).

Dirty outdoor coil (cooling).

Refrigerant overcharged.

Air in system.

Replace filter.

Clean coil.

Recover excess refrigerant.

Recover refrigerant, evacuate system, and recharge.

Condensing air restricted or air short-cycling.



Check for leaks; repair and recharge.

Compressor scroll plates defective.

Restriction in liquid tube.

High heat load.

Replace compressor.

Remove restriction.

Check for source and eliminate.

Compressor scroll plates defective.

Refrigerant overcharged.

Dirty air filter (cooling).

Dirty or heavily iced outdoor coil (heating).


Metering device or low side restricted.

Replace compressor.

Recover excess refrigerant.

Replace filter.

Clean outdoor coil. Check defrost cycle operation.

Check for leaks; repair and recharge.

Remove source of restriction.

Insufficient indoor airflow (cooling mode).

Temperature too low in conditioned area.

Increase air quantity. Check filter and replace if necessary.

Reset thermostat.

Field-installed filter drier restricted.

Outdoor ambient below 25_F (cooling).

Replace.

Install low-ambient kit.

Outdoor fan motor(s) not operating (heating).

Check fan motor operation.

18

CONVENIENCE OUTLETS

!

WARNING



Units with convenience outlet circuits may use multiple disconnects. Check convenience outlet for power status before opening unit for service.

Locate its disconnect switch, if appropriate, and open it. Tag--out this switch, if necessary.

Non--powered convenience outlets are offered on RHS models: They provide a 125--volt GFCI (ground--fault circuit--interrupter) duplex receptacle rated at 15--A behind a hinged waterproof access cover, located on the end panel of the unit. See Fig. 22.

FIGURE 22

Convenient Outlet Location

Convenience

Outlet

GFCI

Mount the weatherproof cover to the backing plate as shown in Fig. 23. Remove two slot fillers in the bottom of the cover to permit service tool cords to exit the cover.

Check for full closing and latching.

FIGURE 23

Weatherproof Cover Installation

COVER – WHILE-IN-USE

WEATHERPROOF

RECEPTACLE

NOT INCLUDED

Control Box

Access Panel

Installing Weatherproof Cover –

A weatherproof while-in-use cover for the factory-installed convenience outlets is now required by UL standards.

This cover cannot be factory-mounted due its depth; it must be installed at unit installation. For shipment, the convenience outlet is covered with a blank cover plate.

The weatherproof cover kit is shipped in the unit’s control box. The kit includes the hinged cover, a backing plate and gasket.

DISCONNECT ALL POWER TO UNIT AND

CONVENIENCE OUTLET.

Remove the blank cover plate at the convenience outlet; discard the blank cover.

Loosen the two screws at the GFCI duplex outlet, until approximately

1

/

2

-in (13 mm) under screw heads are exposed. Press the gasket over the screw heads. Slip the backing plate over the screw heads at the keyhole slots and align with the gasket; tighten the two screws until snug (do not over-tighten).

BASE PLATE FOR

GFCI RECEPTACLE

Non--powered Convenient Outlet: This type requires the field installation of a general--purpose 125--volt 15--A circuit powered from a source elsewhere in the building.

Observe national and local codes when selecting wire size, fuse or breaker requirements and disconnect switch size and location. Route 125--v power supply conductors into the bottom of the utility box containing the duplex receptacle.

Maintenance: Periodically test the GFCI receptacle by pressing the TEST button on the face of the receptacle.

This should cause the internal circuit of the receptacle to trip and open the receptacle. Check for proper grounding wires and power line phasing if the GFCI receptacle does not trip as required. Press the RESET button to clear the tripped condition.

Using unit--mounted convenience outlets: Units with unit--mounted convenience outlet circuits will often require that two disconnects be opened to de--energize all power to the unit. Treat all units as electrically energized until the convenience outlet power is also checked and de--energization is confirmed. Observe National Electrical

Code Article 210, Branch Circuits, for use of convenience outlets.

HEAT PUMP CONTROLS

Controls Terminal Board

The Controls Terminal Board (CTB) is a large printed circuit board that is located in the center of the unit control box. This printed circuit board contains multiple termination strips and connectors to simplify factory control box wiring and field control connections. Terminals are clearly marked on the board surface. See Fig 24.

The CTB contains no software and no logic. But it does include seven configuration jumpers that are cut to

19

configure the board to read external optional and accessory controls, including that the unit is a heat pump.

FIGURE 24

Controls Terminal Board (CTB)

Jumper

JMP1

JMP2

JMP3

JMP4

JMP5

JMP6

JMP7

Table 7 – Jumper Configuration

Control Function

Phase Monitor

Occupancy Control

Smoke Detector Shutdown

Remote Shutdown

Heat Pump / Reheat

Heat Pump / Reheat

Heat Pump / Reheat

Note

RHS default: Cut

RHS default: Cut

RHS default: Cut

Jumpers JMP5, JMP6 and JMP7 are located in notches across the top of the CTB (see Fig. 24 ). These jumpers are factory cut on all heat pump units. Visually check these jumpers to confirm that they have been cut.

PROTECTIVE CONTROLS

Compressor Protection

Overcurrent

The compressor has internal linebreak motor protection.

Overtemperature

The compressor has an internal protector to protect it against excessively high discharge gas temperatures.

High Pressure Switch

The system is provided with a high pressure switch mounted on the discharge line. The switch is stem--mounted and brazed into the discharge tube. Trip setting is 630 psig +/-- 10 psig (4344 +/-- 69 kPa) when hot. Reset is automatic at 505 psig (3482 kPa).

Loss of Charge Switch

The system is protected against a loss of charge and low evaporator coil loading condition by a loss of charge switch located on the liquid line and a freeze protection thermostat on the indoor coil.

The switch is stem--mounted. Loss of Charge Switch trip setting is

27 psig +/-- 3 psig (186 +/-- 21 kPa). Reset is automatic at

44 +/-- 3 psig (303 +/-- 21 kPa).

Freeze Protection Thermostat trip setting is 30_F +/-- 5_F

(--1_C +/-- 3_C). Reset is automatic at 45_F +/-- 5_F (7_C

+/--3_C).

Supply (Indoor) Fan Motor Protection

Disconnect and lockout power when servicing fan motor.

2.9 and 3.7 bhp motors are equipped with an overtemperature or protection device. The type of device depends on the motor size. See Table 8.

Table 8 – Overload Device per Motor Size

Motor Size (bhp)

1.7

2.4

2.9

3.7

4.7

Overload Device

Internal Linebreak

Internal Linebreak

Thermix

Thermix

External

(Circuit Breaker)

Reset

Automatic

Automatic

Automatic

Automatic

Manual

The High Static option supply fan motor is equipped with a pilot--circuit Thermix combination overtemperature/ overcurrent protection device. This device resets automatically. Do not bypass this switch to correct trouble.

Determine the cause and correct it.

The Thermix device is a snap--action overtemperature protection device that is imbedded in the motor windings.

It is a pilot--circuit device that is wired into the unit’s 24–v control circuit. When this switch reaches its trip setpoint, it opens the 24–v control circuit and causes all unit operation to cease. This device resets automatically when the motor windings cool. Do not bypass this switch to correct trouble. Determine the cause and correct it.

The External motor overload device is a specially--calibrated circuit breaker that is UL recognized as a motor overload controller. It is an overcurrent device.

When the motor current exceeds the circuit breaker setpoint, the device opens all motor power leads and the motor shuts down. Reset requires a manual reset at the overload switch. This device (designated IFCB) is located on the side of the supply fan housing, behind the fan access panel.

20

Troubleshooting supply fan motor overload trips: The supply fan used in RHS units is a forward--curved centrifugal wheel. At a constant wheel speed, this wheel had a characteristic that causes the fan shaft load to

DECREASE when the static pressure in the unit--duct system increases and to INCREASE when the static pressure in the unit--duct system decreases (and fan airflow rate increases). Motor overload conditions typically develop when the unit is operated with an access panel removed, with unfinished duct work, in an economizer--open mode, or a leak develops in the duct system that allows a bypass back to unit return opening.

Outdoor Fan Motor Protection

The outdoor fan motor is internally protected against overtemperature.

Control Circuit, 24--V

The control circuit is protected against overcurrent conditions by a circuit breaker mounted on control transformer TRAN. Reset is manual.

COMMERCIAL DEFROST CONTROL

The Commercial Defrost Control Board (DFB) coordinates thermostat demands for supply fan control, 1 or 2 stage cooling, 2 stage heating, emergency heating and defrost control with unit operating sequences. The DFB also provides an indoor fan off delay feature (user selectable).

See Fig. 25 for board arrangement.

FIGURE 25

Defrost Control Board (DFB) Arrangement

DIP

Switches

Speed-Up

Jumpers

The DFB is located in the RHS’s main control box (see

Fig. 26). All connections are factory--made through harnesses to the unit’s CTB, to IFC (belt--drive motor) or to ECM (direct--drive motor), reversing valve solenoids and to defrost thermostats. Refer to Table 9 for details of

DFB Inputs and Outputs. Detailed unit operating sequences are provided in the Operating Sequences section starting on page 62.

FIGURE 26

Defrost Control Board (DFB) Location

21

Inputs

Point Name

G Fan

Y1 Cool 1

Y2 Cool 2

W1 Heat 1

W2 Heat 2

R Power

C Common

DFT1

DFT 2

Outputs

Point Name

IFO Fan On

OF OD Fan On

RVS1

RVS2

COMP 1

COMP 2

HEAT 2

COM

Table 9 – RHS Defrost Board I/O and Jumper Configurations

Type of I/O

DI, 24---vac

DI, 24---vac

DI, 24---vac

DI, 24---vac

DI, 24---vac

24---vac

24---vac

DI, 24---vac

DI, 24---vac

Type of I/O

DO, 24---vac

DO, 24---vac

DO, 24---vac

DO, 24---vac

DO, 24---vac

DO, 24---vac

DO, 24---vac

24---vac

Connection Pin Number

P2---3

P2---5

P2---4

P2---7

P2---6

P3---1

P3---2

DFT---1 to DFT---1

DFT---2 to DFT---2


P3---9

OF

P3---7 to P3---5

P3---6 to P3---4

P3---10

P3---8

E---HEAT

P3---3

Unit Connection

LCTB---G

LCTB---Y1

LCTB---Y2

LCTB---W1

LCTB---W2

CONTL BRD---8

CONTL BRD---4

Unit Connection

REHEAT---2

OFR

FPT --- REHEAT---6

REHEAT---8

HC---1 (TB4---1)

HC---1 (TB4---3)

Note

Note

Energize in COOL

Energize in COOL

Configuration

Point Name

Select Jumper

2 Compressor

Type of I/O

24---vac

24---vac


P1---1

P1---3

Unit Connection Note

Use for RHS***D

Speed--Up Configuration

Point Name

Speed---Up Jumper

Speed---Up Jumper

Type of I/O Connection Pin Number

JMP17

JMP18

Jumper for 1--3 secs: Factory Test, defrost runs for 9 secs

Jumper for 5--20 secs: Forced Defrost, defrost runs for 30 secs if DFT2 is open

Reversing valve control — The DFB has two outputs for unit reversing valve control. Operation of the reversing valves is based on internal logic; this application does not use an “O” or “B” signal to determine reversing valve position. Reversing valves are energized during the

Cooling stages and de--energized during Heating cycles.

Once energized at the start of a Cooling stage, the reversing valve will remain energized until the next

Heating cycle demand is received. Once de--energized at the start of a Heating cycle, the reversing valves will remain de--energized until the next Cooling stage is initiated.

Unit Connection

Defrost — The defrost control mode is a time/temperature sequence. There are two time components: The continuous run period and the test/defrost cycle period.

The temperature component is provided by the defrost thermostat(s) (DFT1 and DFT2 (090--102 only) mounted on the outdoor coil.

Note

Auxiliary (Electric) Heat control — The RHS unit can be equipped with one or two auxiliary electric heaters, to provide a second stage of Heating. The DFB will energize this Heating system for a Stage 2 Heating command

(heaters operate concurrently with both compressors in the Stage 2 Heating cycle), for an Emergency Heating sequence (compressors are off and only the electric heaters are energized) and also during the Defrost cycle

(to eliminate a “cold blow” condition in the space).

Compressor control — The DFB receives inputs indicating

Stage 1 Cooling, Stage 2 Cooling (sizes 090 and 102 only) and Stage 1 Heating from the space thermostat; it generates commands to start compressors with or without reversing valve operation to produce Stage 1 Cooling

(one compressor), Stage 2 Cooling (both compressors run) or Stage 1 Heating (both compressors run).

The continuous run period is a fixed time period between the end of the last defrost cycle (or start of the current

Heating cycle) during which no defrost will be permitted.

This period can be set at 30, 60, 90 or 120 minutes by changing the positions of DIP switches SW1 and SW2

(see Fig. 27 and Table 10). The default run periods are 30 minutes for unit sizes 036--072 and 90 minutes for unit sizes 090--102.

22

FIGURE 27

DIP Switch Settings -- Defrost Board

At the end of the continuous run period, the defrost control will test for a need to defrost. On unit sizes

036--072 (single compressor designs), DFT1 controls the start and termination of the defrost cycle. If DFT1 is still open, the defrost test/run window is closed and the control repeats the continuous run period. If DFT1 is closed, the defrost cycle is initiated. The defrost period will end when DFT1 opens (indicating the outdoor coil has been cleared of frost and ice) or a 10 minute elapsed period expires, whichever comes first.

On unit sizes 090--102 (two circuit designs), DFT2

(located on the bottom circuit of the outdoor coil) controls the start and termination of the defrost cycle. If DFT2 is still open, the defrost test/run window is closed and the control repeats the continuous run period. If DFT2 is closed, the defrost cycle is initiated in Circuit 2. The defrost period will end when DFT2 opens (indicating the outdoor coil has been cleared of frost and ice) or a 10 minute elapsed period expires, whichever comes first.

On sizes 090--102, Circuit 1’s defrost thermostat DFT1

(located on the upper circuit of the outdoor coil) cannot initiate a unit defrost cycle; only DFT2 may do this. But once Circuit 2 is in defrost, the DFB will monitor the status of DFT1. If DFT1 closes during a Circuit 2 defrost cycle,

Circuit 1 will also enter a defrost cycle. Circuit 1’s defrost cycle will end when DFT1 opens (indicating the upper portion of the outdoor coil is cleared of frost and ice) or the Circuit 2 defrost cycle is terminated.

At the end of the unit defrost cycle, the unit will be returned to Heating cycle for a full continuous run period.

Switch No.

1

1

0

J

90 minutes

2

J

1

1

0

J

60 minutes

2

J

Table 10 – Dip Switch Position

1

0

1

J

2

J

1

0

1

J

30 minutes 120 minutes

2

J

If the space heating load is satisfied and compressor operation is terminated, the defrost control will remember where the run period was interrupted. On restart in

Heating, the defrost control will resume unit operation at the point in the run period where it was last operating.

Defrost Thermostats — These are temperature switches that monitor the surface temperature of the outdoor coil circuits. These switches are mounted on the liquid tube exiting the outdoor coil heating circuits. These switches close on temperature drop at 30_F (--1_C) and reset open on temperature rise at 80_F (27_C).

Indoor Fan Off Delay — The DFB can provide a 30 sec delay on Indoor Fan Off if the thermostat’s fan selector switch is set on AUTO control. DIP Switch SW3 on the

DFB selects use of the fan off time delay feature. Setting

SW3 in the OPEN position turns the Fan Off Delay feature on; setting SW3 in the CLOSED position disables this feature. The delay period begins when Y1 demand or W1 demand by the space thermostat is removed.

Defrost Speedup Functions — The DFB permits the servicer to speed--up the defrost cycle. There are two speed--up sequences: relative speed--up and an immediate forced defrost. Speed--up sequences are initiated by shorting jumper wires JMP17 and JMP18 together (see Fig. 25); use a straight--edge screwdriver.

Shorting the jumpers for a period of 1 to 3 secs reduces the defrost timer periods by a factor of 0.1 sec/minute.

(For example, the 90 min run period is reduced to 9 secs.)

The DFB will step the unit through a Heating cycle and a

Defrost cycle using these reduced time periods. This mode ends after the Defrost cycle.

Shorting the jumpers for a period of 5 to 20 secs bypasses the remaining continuous run period and places the unit in a Forced Defrost mode. If the controlling DFT is closed when this mode is initiated, the unit will complete a normal defrost period that will terminate when the controlling DFT opens or the 10 minute defrost cycle limit is reached. If the controlling DFT is open when this mode is initiated, the Defrost cycle will run for 30 secs. Both modes end at the end of the Defrost cycle.

3

1

0

J

Fan Delay

On

Off

23

ELECTRIC HEATERS

RHS units may be equipped with field--installed accessory electric heaters. The heaters are modular in design, with heater frames holding open coil resistance wires strung through ceramic insulators, line--break limit switches and a control contactor. One or two heater modules may be used in a unit.

FIGURE 28

Typical Access Panel Locatin (3--6 Ton)

DISCONNECT MOUNTING

LOCATION

NOTE: The value in position 9 of the part number differs between the sales package part number (value is 1) and a bare heater model number (value is 0).

FIGURE 29

Typical Component Locatin (3--6 Ton)

DISCONNECT

MOUNTING

LOCATION

EMT OR RIGID CONDUIT

(FIELD-SUPPLIED)

SINGLE

POINT BOX

CENTER

POST

MANUAL RESET

LIMIT SWITCH

HEATER

COVERS

MAIN

CONTROL

BOX

BRACKET AND

CONDUIT

DRIP BOOT

SINGLE POINT

BOX

MOUNTING

SCREW

HEATER

MODULE

(LOCATION 1)

HEATER

MODULE

(LOCATION 2)

CONTROL WIRE TERMINAL BLOCK

HEATER

MOUNTING

BRACKET

FIGURE 30

Typical Module Insulation

UNIT BLOCK-OFF

PANEL

OUTDOOR

ACCESS PANEL

INDOOR

ACCESS

PANEL

Heater modules are installed in the compartment below the indoor (supply) fan outlet. Access is through the indoor access panel. Heater modules slide into the compartment on tracks along the bottom of the heater opening. See Fig. 28, Fig. 29 and Fig. 30.

Not all available heater modules may be used in every unit. Use only those heater modules that are UL listed for use in a specific size unit. Refer to the label on the unit cabinet re approved heaters.

Unit heaters are marked with Heater Model Numbers. But heaters are ordered as and shipped in cartons marked with a corresponding heater Sales Package part number.

See Table 11 for correlation between heater Model

Number and Sales Package part number.

TRACK

FLANGE

C

Table 11 – Heater Model Number

R H E A T E R 0 0 1 A 0 0 Bare Heater Model Number

Heater Sales Package PNO

Includes:

Bare Heater

Carton and packing materials

Installation sheet

C R H E A T E R 1 0 1 A 0 0

Single Point Boxes and Supplementary Fuses —

When the unit MOCP device value exceeds 60--A, unit--mounted supplementary fuses are required for each heater circuit. These fuses are included in accessory

Single Point Boxes, with power distribution and fuse blocks. The single point box will be installed directly under the unit control box, just to the left of the partition separating the indoor section (with electric heaters) from the outdoor section. The Single Point Box has a hinged access cover. See Fig. 31.

24

FIGURE 31

CONTROL

BOX

BUSHING

Typical Single Point Insulation

SINGLE

POINT BOX

MOUNTING

SCREWS

DRIP BOOT

BRACKET

MOUNTING

SCREWS

POWER

WIRES

FOAM

BUSHING

HEATER

RELAYS

HEATER

MOUNTING

SCREWS

23 21

ALLIED PA

CORP.

MODEL NO.

ERIAL NO.

OD

13

NDITIONING

UIP ACCESS

346N.

23

P / N 2-

1

3

5610-4

22.2

REV

On RHS units, all fuses are 60--A. Single point boxes containing fuses for 208/230--V applications use UL Class

RK5 250--V fuses (Bussman FRNR 60 or Shawmut TR

60R). Single point boxes for 460--V and 575--V applications use UL Class T 600--V fuses (Bussman JJS

60 or Shawmut A6T 60). (Note that all heaters are qualified for use with a 60--A fuse, regardless of actual heater ampacity, so only 60--A fuses are necessary.)

Unit heater applications not requiring supplemental fuses require a special Single Point Box without any fuses.

Connect power supply conductors to heater conductors and field--supplied base unit power tap leads (see text below re: “Completing Heater Installation”) inside the empty Single Point Box using UL--approved connectors.

Safety Devices — Electric heater applications use a combination of line--break/auto--reset limit switches and a pilot--circuit/manual reset limit switch to protect the unit against over--temperature situations.

Line--break/auto--reset limit switches are mounted on the base plate of each heater module. See Fig. 32. These are accessed through the indoor access panel. Remove the switch by removing two screws into the base plate and extracting the existing switch.

Pilot--circuit/manual reset limit switch is located in the side plate of the indoor (supply) fan housing. See Fig. 29.

Completing Heater Installation

Field Power Connections — Tap conductors must be installed between the base unit’s field power connection lugs and the Single Point Box (with or without fuses).

Refer to unit wiring schematic. Use copper wire only. For connection using the Single Point Box less fuses, connect the field power supply conductors to the heater power leads and the field--supplied tap conductors inside the

Single Point Box. Use UL--approved pressure connectors

(field--supplied) for these splice joints.

FIGURE 32

Typical Location of Heater Limit Switches

(3--Phase heater shown)

23

13

ALLIED PA

MODEL NO.

ERIAL NO.

OD

11

21

NDITIONING

UIP ACCESS

346N .

P / N

23

2-

1

3

5610-4

REV

Line-Break

Limit Switches

Low--Voltage Control Connections — Pull the low--voltage control leads from the heater module(s) --

VIO and BRN (two of each if two modules are installed; identify for Module #1) -- to the 4--pole terminal board TB4 located on the heater bulkhead to the left of Heater #1.

Connect the VIO lead from Heater #1 to terminal TB4--1.

Connect the VIO lead from Heater #2 to terminal TB4--2.

Connect both BRN leads to terminal TB4--3. See Fig. 33.

FIGURE 33

Accessory Electric Heater Control Connections

DEFROST

BOARD

E-HEAT

P3-3

ORN

BRN

TB4

ORN

1

VIO

Field

Connections

VIO

BRN

3

BRN BRN

Elec Htr

VIO HR2 BRN

VIO HR1 BRN

HR1: On Heater 1 in Position #1

HR2: On Heater 2 in Position #2 (if installed)

25

SMOKE DETECTORS

Smoke detectors are available as factory--installed options on RHS models. Smoke detectors may be specified for Supply Air only without or with economizer.

All components necessary for operation are factory--provided and mounted.

The unit is factory--configured for immediate smoke detector shutdown operation; additional wiring or modifications to unit terminal board may be necessary to complete the unit and smoke detector configuration to meet project requirements.

System

The smoke detector system consists of a four--wire controller and one or two sensors. Its primary function is to shut down the rooftop unit in order to prevent smoke from circulating throughout the building. It is not to be used as a life saving device.

Controller

The controller (see Fig. 34) includes a controller housing, a printed circuit board, and a clear plastic cover. The controller can be connected to one or two compatible duct smoke sensors. The clear plastic cover is secured to the housing with a single captive screw for easy access to the wiring terminals. The controller has three LEDs (for

Power, Trouble and Alarm) and a manual test/reset button

(on the cover face).

FIGURE 34

Controller Assembly inlet and an exhaust tube. The sampling tube (when used) and exhaust tube are attached during installation. The sampling tube varies in length depending on the size of the rooftop unit. The clear plastic cover permits visual inspections without having to disassemble the sensor.

The cover attaches to the sensor housing using four captive screws and forms an airtight chamber around the sensing electronics. Each sensor includes a harness with an RJ45 terminal for connecting to the controller. Each sensor has four LEDs (for Power, Trouble, Alarm and

Dirty) and a manual test/reset button (on the left--side of the housing).

FIGURE 35

Smoke Detector Sensor

Exhaust tube

Duct smoke sensor

Exhaust gasket

Sensor housing and electronics

See

Detail A

Intake gasket

Plug

TSD-CO2

(ordering option)

Sampling tube

(ordered separately)

Coupling

Detail A

Cover gasket

(ordering option)

Sensor cover

Controller housing and electronics

Conduit couplings

(supplied by installer)

Duct smoke sensor controller

Conduit nuts

(supplied by installer)

Conduit support plate

Terminal block cover

Cover gasket

(ordering option)

Controller cover

Fastener

(2X)

Alarm

Trouble

Power

Test/reset switch

Sensor

The sensor (see Fig. 35) includes a plastic housing, a printed circuit board, a clear plastic cover, a sampling tube

26

Magnetic test/reset switch

Alarm

Trouble

Power

Dirty

Air is introduced to the duct smoke detector sensor’s sensing chamber through a sampling tube that extends into the HVAC duct and is directed back into the ventilation system through a (shorter) exhaust tube. The difference in air pressure between the two tubes pulls the sampled air through the sensing chamber. When a sufficient amount of smoke is detected in the sensing chamber, the sensor signals an alarm state and the controller automatically takes the appropriate action to shut down fans and blowers, change over air handling systems, notify the fire alarm control panel, etc.

The sensor uses a process called differential sensing to prevent gradual environmental changes from triggering false alarms. A rapid change in environmental conditions, such as smoke from a fire, causes the sensor to signal an alarm state but dust and debris accumulated over time does not.

For installations using two sensors, the duct smoke detector does not differentiate which sensor signals an alarm or trouble condition.

Smoke Detector Locations

Supply Air — The Supply Air smoke detector sensor is located to the left of the unit’s indoor (supply) fan. See

Fig. 36. Access is through the fan access panel. There is no sampling tube used at this location. The sampling tube inlet extends through the side plate of the fan housing

(into a high pressure area). The controller is located on a bracket to the right of the return filter, accessed through the lift--off filter panel.

FIGURE 36

Typical Supply Air Smoke Detector Sensor Location

FIOP Smoke Detector Wiring and Response

All units: FIOP smoke detector is configured to automatically shut down all unit operations when smoke condition is detected. See Fig. 37, Typical Smoke

Detector System Wiring.

Highlight A: JMP 3 is factory--cut, transferring unit control to smoke detector.

Highlight B: Smoke detector NC contact set will open on smoke alarm condition, de--energizing the ORN conductor.

Highlight C: 24--v power signal via ORN lead is removed at Smoke Detector input on CTB (Control Terminal

Board); all unit operations cease immediately.

Highlight D: On smoke alarm condition, the smoke detector NO Alarm contact will close, supplying 24--v power to GRA conductor.

Highlight E: GRA lead at Smoke Alarm input on CTB provides 24--v signal to FIOP DDC control.

Smoke Detector Sensor

FIGURE 37

Typical Smoke Detector System Wiring

B

D

C

A

E

27

Sensor and Controller Tests

Sensor Alarm Test

The sensor alarm test checks a sensor’s ability to signal an alarm state. This test requires that you use a SD--MAG test magnet, approximately 1” long x 1/4” thick x1/4” wide, located in a plastic bag in the unit control box.

!

CAUTION

OPERATIONAL TEST HAZARD

Failure to follow this caution may result in personnel and authority concern.

This test places the duct detector into the alarm state. Unless part of the test, disconnect all auxiliary equipment from the controller before performing the test. If the duct detector is connected to a fire alarm system, notify the proper authorities before performing the test.

Sensor Alarm Test Procedure

1. Hold the test magnet where indicated on the side of the sensor housing for seven seconds.

2. Verify that the sensor’s Alarm LED turns on.

3. Reset the sensor by holding the test magnet against the sensor housing for two seconds.

4. Verify that the sensor’s Alarm LED turns off.

Controller Alarm Test

The controller alarm test checks the controller’s ability to initiate and indicate an alarm state.

!

CAUTION



This test places the duct detector into the alarm state. Disconnect all auxiliary equipment from the controller before performing the test. If the duct detector is connected to a fire alarm system, notify the proper authorities before performing the test.

Controller Alarm Test Procedure

1. Press the controller’s test/reset switch for seven seconds.

2. Verify that the controller’s Alarm LED turns on.

3. Reset the sensor by pressing the test/reset switch for two seconds.

4. Verify that the controller’s Alarm LED turns off.

Dirty Controller Test

The dirty controller test checks the controller’s ability to initiate a dirty sensor test and indicate its results.

!

CAUTION



Pressing the controller’s test/reset switch for longer than seven seconds will put the duct detector into the alarm state and activate all automatic alarm responses.

Dirty Controller Test Procedure

1. Press the controller’s test/reset switch for two seconds.

2. Verify that the controller’s Trouble LED flashes.

Dirty Sensor Test

The dirty sensor test provides an indication of the sensor’s ability to compensate for gradual environmental changes. A sensor that can no longer compensate for environmental changes is considered 100% dirty and requires cleaning or replacing. You must use a factory provided SD--MAG test magnet to initiate a sensor dirty test. The sensor’s Dirty LED indicates the results of the dirty test as shown in Table 12.

!

CAUTION



Holding the test magnet against the sensor housing for more than seven seconds will put the duct detector into the alarm state and activate all automatic alarm responses.

Table 12 – Dirty LED Test

FLASHES

1

2

3

4

DESCRIPTION

0---25% dirty. (Typical of a newly installed detector)

25---50% dirty

51---75% dirty

76---99% dirty

Dirty Sensor Test Procedure

1. Hold the test magnet where indicated on the side of the sensor housing for two seconds.

2. Verify that the sensor’s Dirty LED flashes.

28

!

CAUTION



Changing the dirty sensor test operation will put the detector into the alarm state and activate all automatic alarm responses. Before changing dirty sensor test operation, disconnect all auxiliary equipment from the controller and notify the proper authorities if connected to a fire alarm system.

Changing the Dirty Sensor Test

By default, sensor dirty test results are indicated by:

S

The sensor’s Dirty LED flashing.

S

The controller’s Trouble LED flashing.

S

The controller’s supervision relay contacts toggle.

The operation of a sensor’s dirty test can be changed so that the controller’s supervision relay is not used to indicate test results. When two detectors are connected to a controller, sensor dirty test operation on both sensors must be configured to operate in the same manner.

To Configure the Dirty Sensor Test Operation

1. Hold the test magnet where indicated on the side of the sensor housing until the sensor’s Alarm LED turns on and its Dirty LED flashes twice (approximately 60 seconds).

2. Reset the sensor by removing the test magnet then holding it against the sensor housing again until the sensor’s Alarm LED turns off (approximately 2 seconds).

Remote Station Test

The remote station alarm test checks a test/reset station’s ability to initiate and indicate an alarm state.

!

CAUTION



This test places the duct detector into the alarm state. Unless part of the test, disconnect all auxiliary equipment from the controller before performing the test. If the duct detector is connected to a fire alarm system, notify the proper authorities before performing the test.

SD--TRM4 (CRSDTEST001A00) Remote Alarm Test

Procedure

1. Turn the key switch to the RESET/TEST position for seven seconds.

2. Verify that the test/reset station’s Alarm LED turns on.

3. Reset the sensor by turning the key switch to the

RESET/TEST position for two seconds.

4. Verify that the test/reset station’s Alarm LED turns off.

Remote Test/Reset Station Dirty Sensor Test

The test/reset station dirty sensor test checks the test/reset station’s ability to initiate a sensor dirty test and indicate the results. It must be wired to the controller as shown in Fig. 38 and configured to operate the controller’s supervision relay. For more information, see “Changing the Dirty Sensor Test.”

FIGURE 38

Remote Test/Reset Station Connections

12

1

TB3

1

2

3 14

Supervision relay contacts [3]

13

19

18 Vdc (

+)

Wire must be added by installer

15

2

Smoke Detector Controller

−

+

Auxiliary equipment

5

4

Power

Alarm

1

Reset/Test

3

SD-TR14

Trouble

18 Vdc (

−)

20 2

!

CAUTION



If the test/reset station’s key switch is left in the

RESET/TEST position for longer than seven seconds, the detector will automatically go into the alarm state and activate all automatic alarm responses.

!

CAUTION



Holding the test magnet to the target area for longer than seven seconds will put the detector into the alarm state and activate all automatic alarm responses.

Dirty Sensor Test Using an SD--TRM4

1. Turn the key switch to the RESET/TEST position for two seconds.

2. Verify that the test/reset station’s Trouble LED flashes.

29

CONTROL OR INDICATOR

Magnetic test/reset switch

Alarm LED

Trouble LED

Dirty LED

Power LED

Table 13 – Detector Indicators

DESCRIPTION

Resets the sensor when it is in the alarm or trouble state. Activates or tests the sensor when it is in the normal state.

Indicates the sensor is in the alarm state.

Indicates the sensor is in the trouble state.

Indicates the amount of environmental compensation used by the sensor

(flashing continuously = 100%)

Indicates the sensor is energized.

Detector Cleaning

Cleaning the Smoke Detector

Clean the duct smoke sensor when the Dirty LED is flashing continuously or sooner if conditions warrant.

!

CAUTION



If the smoke detector is connected to a fire alarm system, first notify the proper authorities that the detector is undergoing maintenance then disable the relevant circuit to avoid generating a false alarm.

1. Disconnect power from the duct detector then remove the sensor’s cover. (See Fig. 39.)

2. Using a vacuum cleaner, clean compressed air, or a soft bristle brush, remove loose dirt and debris from inside the sensor housing and cover.

Use isopropyl alcohol and a lint--free cloth to remove dirt and other contaminants from the gasket on the sensor’s cover.

3. Squeeze the retainer clips on both sides of the optic housing then lift the housing away from the printed circuit board.

4. Gently remove dirt and debris from around the optic plate and inside the optic housing.

5. Replace the optic housing and sensor cover.

6. Connect power to the duct detector then perform a sensor alarm test.

FIGURE 39

Sensor Cleaning Diagram

Sampling tube

Airflow

HVAC duct

Sensor housing

Optic plate

Retainer clip

Optic housing

Indicators

Normal State

The smoke detector operates in the normal state in the absence of any trouble conditions and when its sensing chamber is free of smoke. In the normal state, the Power

LED on both the sensor and the controller are on and all other LEDs are off.

Alarm State

The smoke detector enters the alarm state when the amount of smoke particulate in the sensor’s sensing chamber exceeds the alarm threshold value. (See

Table 13.) Upon entering the alarm state:

S

The sensor’s Alarm LED and the controller’s Alarm LED turn on.

S

The contacts on the controller’s two auxiliary relays switch positions.

S

The contacts on the controller’s alarm initiation relay close.

S

The controller’s remote alarm LED output is activated

(turned on).

S

The controller’s high impedance multiple fan shutdown control line is pulled to ground Trouble state.

The SuperDuct duct smoke detector enters the trouble state under the following conditions:

S

A sensor’s cover is removed and 20 minutes pass before it is properly secured.

S

A sensor’s environmental compensation limit is reached

(100% dirty).

30

S

A wiring fault between a sensor and the controller is detected.

An internal sensor fault is detected upon entering the trouble state:

S

The contacts on the controller’s supervisory relay switch positions. (See Fig. 40.)

S

If a sensor trouble, the sensor’s Trouble LED and the controller’s Trouble LED turn on.

S

If 100% dirty, the sensor’s Dirty LED turns on and the controller’s Trouble LED flashes continuously.

S

If a wiring fault between a sensor and the controller, the controller’s Trouble LED turns on but not the sensor’s.

FIGURE 40

Controller Assembly

Alarm

Trouble

Power

Test/reset switch

NOTE: All troubles are latched by the duct smoke detector. The trouble condition must be cleared and then the duct smoke detector must be reset in order to restore it to the normal state.

Resetting Alarm and Trouble Condition Trips:

Manual reset is required to restore smoke detector systems to Normal operation. For installations using two sensors, the duct smoke detector does not differentiate which sensor signals an alarm or trouble condition. Check each sensor for Alarm or Trouble status (indicated by

LED). Clear the condition that has generated the trip at this sensor. Then reset the sensor by pressing and holding the reset button (on the side) for 2 seconds. Verify that the sensor’s Alarm and Trouble LEDs are now off. At the controller, clear its Alarm or Trouble state by pressing and holding the manual reset button (on the front cover) for 2 seconds. Verify that the controller’s Alarm and

Trouble LEDs are now off. Replace all panels.

Troubleshooting

Controller’s Trouble LED is On

1. Check the Trouble LED on each sensor connected to the controller. If a sensor’s Trouble LED is on, determine the cause and make the necessary repairs.

2. Check the wiring between the sensor and the controller. If wiring is loose or missing, repair or replace as required.

Controller’s Trouble LED is Flashing

1. One or both of the sensors is 100% dirty.

2. Determine which Dirty LED is flashing then clean that sensor assembly as described in the detector cleaning section.

Sensor’s Trouble LED is On

1. Check the sensor’s Dirty LED. If it is flashing, the sensor is dirty and must be cleaned.

2. Check the sensor’s cover. If it is loose or missing, secure the cover to the sensor housing.

3. Replace sensor assembly.

Sensor’s Power LED is Off

1. Check the controller’s Power LED. If it is off, determine why the controller does not have power and make the necessary repairs.

2. Check the wiring between the sensor and the controller. If wiring is loose or missing, repair or replace as required.

Controller’s Power LED is Off

1. Make sure the circuit supplying power to the controller is operational. If not, make sure JP2 and JP3 are set correctly on the controller before applying power.

2. Verify that power is applied to the controller’s supply input terminals. If power is not present, replace or repair wiring as required.

Remote Test/Reset Station’s Trouble LED Does Not flash When Performing a Dirty Test, But the Controller’s Trouble LED Does

1. Verify that the remote test/station is wired as shown in

Fig. 38. Repair or replace loose or missing wiring.

2. Configure the sensor dirty test to activate the controller’s supervision relay. See “To Configure the

Dirty Sensor Test Operation” for details.

Sensor’s Trouble LED is On, But the Controller’s

Trouble LED is OFF

Remove JP1 on the controller.

31

ECONOMIZER SYSTEMS

The RHS units may be equipped with a factory--installed or accessory (field--installed) economizer system.

Available with a logic control system See Fig. 41 for component locations. See Fig. 42 for economizer section wiring diagrams.

FIGURE 41

Component Locations

WIRING

HARNESS

ACTUATOR

ECONOMI$ER IV

CONTROLLER

OUTSIDE AIR

TEMPERATURE SENSOR

LOW AMBIENT

SENSOR

FIGURE 42

Economizer Wiring

Economizer 2 Position Damper

Unit Without Economizer or

2 Position Damper

32

Table 14 – Economizer Input/Output Logic

Demand Control

Ventilation (DCV)

Below set

(DCV LED Off)

Above set

(DCV LED On)

INPUTS

Enthalpy*

Outdoor

High

(Free Cooling LED Off)

Low

(Free Cooling LED On)

High

(Free Cooling LED Off)

Low

(Free Cooling LED On)

Return

Low

High

Low

High

Y1 Y2

On On

On Off

Off Off

On On

On Off

Off Off

On On

On Off

Off Off

On On

On Off

Off Off

Compressor

Stage

1

Stage

2

On

On

Off

On

Off

Off

On

On

Off

On

Off

Off

On

Off

Off

Off

Off

Off

On

Off

Off

Off

Off

Off

OUTPUTS

Occupied

Minimum position

N Terminal†

Damper

Modulating** (between min.

position and full-open)

Minimum position

Modulating†† (between min.

position and DCV maximum)

Modulating***

Unoccupied

Closed

Modulating** (between closed and full-open)

Closed

Modulating†† (between closed and DCV maximum)

Modulating†††

*

†

For single enthalpy control, the module compares outdoor enthalpy to the ABCD setpoint.

Power at N terminal determines Occupied/Unoccupied setting: 24 vac (Occupied), no power (Unoccupied).

** Modulation is based on the supply-air sensor signal.

†† Modulation is based on the DCV signal.

*** Modulation is based on the greater of DCV and supply-air sensor signals, between minimum position and either maximum position (DCV) or fully open (supply-air signal).

††† Modulation is based on the greater of DCV and supply-air sensor signals, between closed and either maximum position (DCV) or fully open

(supply-air signal).

FIGURE 43

Economizer Functional View

Economizer

Table 14 provides a summary of Economizer.

Troubleshooting instructions are enclosed.

A functional view of the economizer is shown in Fig. 43.

Typical settings, sensor ranges, and jumper positions are also shown.

Economizer Standard Sensors

Outdoor Air Temperature (OAT) Sensor

The outdoor air temperature sensor (HH57AC074) is a 10 to 20 mA device used to measure the outdoor-air temperature. The outdoor-air temperature is used to determine when the Economizer can be used for free cooling. The sensor is factory-installed on the Economizer in the outdoor airstream. (See Fig. 41.) The operating range of temperature measurement is 40_ to 100_F (4_ to

38_C). See Fig. 46.

Supply Air Temperature (SAT) Sensor

The supply air temperature sensor is a 3 K thermistor located at the inlet of the indoor fan. (See Fig. 44.) This sensor is factory installed. The operating range of temperature measurement is 0° to 158_F (--18_ to 70_C).

33

FIGURE 44

Supply Air Sensor Location

SUPPLY AIR

TEMPERATURE

SENSOR

MOUNTING

LOCATION

SUPPLY AIR

TEMPERATURE

SENSOR

The temperature sensor looks like an eyelet terminal with wires running to it. The sensor is located in the “crimp end” and is sealed from moisture.

Outdoor Air Lockout Sensor

The Economizer is equipped with an ambient temperature lockout switch located in the outdoor airstream which is used to lock out the compressors below a 42_F (6_C) ambient temperature. (See Fig. 41.)

Economizer Control Modes

Determine the Economizer control mode before set up of the control. Some modes of operation may require different sensors. (See Table 15.) The Economizer is supplied from the factory with a supply--air temperature sensor and an outdoor-- air temperature sensor. This allows for operation of the Economizer with outdoor air dry bulb changeover control. Additional accessories can be added to allow for different types of changeover control and operation of the Economizer and unit.

Table 15 – Economizer Sensor Usage

APPLICATION

Outdoor Air

Dry Bulb

Differential

Dry Bulb

Single Enthalpy

Differential

Enthalpy

CO

2 for DCV

Control using a

Duct-Mounted CO

Sensor

2

Economizer WITH OUTDOOR AIR DRY

BULB SENSOR

Accessories Required

None. The outdoor air dry bulb sensor is factory installed.

DNTEMPSN002A00*

AXB078ENT

AXB078ENT and DNENTDIF004A00*

DNCBDIOX005A00††

* DNENTDIF004A00 and DNTEMPSN002A00 accessories are used on many different base units. As such, these kits may contain parts that will not be needed for installation.

† 33ZCSENCO2 is an accessory CO

2 sensor.

** 33ZCASPCO2 is an accessory aspirator box required for duct-mounted applications.

†† DNCBDIOX005A00 is an accessory that contains both

33ZCSENCO2 and 33ZCASPCO2 accessories.

Outdoor Dry Bulb Changeover

The standard controller is shipped from the factory configured for outdoor dry bulb changeover control. The outdoor air and supply air temperature sensors are included as standard. For this control mode, the outdoor temperature is compared to an adjustable setpoint selected on the control. If the outdoor-air temperature is above the setpoint, the economizer will adjust the outside air dampers to minimum position. If the outdoor-air temperature is below the setpoint, the position of the outside air dampers will be controlled to provided free cooling using outdoor air. When in this mode, the LED next to the free cooling setpoint potentiometer will be on.

The changeover temperature setpoint is controlled by the free cooling setpoint potentiometer located on the control.

(See Fig. 45.) The scale on the potentiometer is A, B, C, and D. See Fig. 46 for the corresponding temperature changeover values.

FIGURE 45

Economizer Controller Potentiometer and LED

Locations

FIGURE 46

Outside Air Temperature Changeover Setpoints

19

13

12

11

18

17

16

15

14

LED ON

D

LED OFF

LED ON

C

LED OFF

LED ON

B

LED OFF

10

9

40 45 50 55 60 65 70 75 80

DEGREES FAHRENHEIT

LED ON

A

LED OFF

85 90 95 100

34

FIGURE 47

Outside Air Damper Leakage

30

25

20

15

10

5

0

0.13 0.20 0.22 0.25 0.30 0.35 0.40 0.45 0.50

STATIC PRESSURE (in. wg)

Differential Dry Bulb Control

For differential dry bulb control the standard outdoor dry bulb sensor is used in conjunction with an additional accessory dry bulb sensor (part number

DNTEMPSN002A00). The accessory sensor must be mounted in the return airstream. (See Fig. 49.) Wiring is provided in the economizer wiring harness.

Outdoor Enthalpy Changeover

For enthalpy control, accessory enthalpy sensor (part number AXB078ENT) is required. Replace the standard outdoor dry bulb temperature sensor with the accessory enthalpy sensor in the same mounting location. (See

Fig. 41.) When the outdoor air enthalpy rises above the outdoor enthalpy changeover setpoint, the outdoor-air damper moves to its minimum position. The outdoor enthalpy changeover setpoint is set with the outdoor enthalpy setpoint potentiometer on the Economizer controller. The setpoints are A, B, C, and D. (See Fig. 49.)

The factory-installed 620-ohm jumper must be in place across terminals S

R controller (see Fig. 42).

and SR+ on the Economizer

In this mode of operation, the outdoor-air temperature is compared to the return-air temperature and the lower temperature airstream is used for cooling. When using this mode of changeover control, turn the enthalpy setpoint potentiometer fully clockwise to the D setting.

(See Fig. 45.)

FIGURE 48

Return Air Temperature or Enthalpy Sensor

Mounting Location

ECONOMI$ERIV

CONTROLLER

ECONOMI$ERIV

FIGURE 49

Enthalpy Changeover Setpoints

85

(29)

90

(32)

95

(35)

100

(38)

105

(41)

110

(43)

46

CONTROL

CURVE

CONTROL POINT

APPROX.

deg. F (deg. C)

AT 50% RH

42

44

C

D

A

B

73 (23)

70 (21)

67 (19)

63 (17)

30

32

3

4

36

38

40

1

4

16

18

20

22

ENTHALPY BTU PER POUND DRY AIR

26

65

(18)

24

60

(16)

A

55

(13)

B

50

(10)

C

70

(21)

1

0

0

9

0

75

(24)

80

70

80

(27)

6

0

50

12

45

(7)

D

40

(4)

35

(2)

40

RELATIVE HUMIDITY (%)

30

20

10

GROMMET

RETURN AIR

SENSOR

RETURN DUCT

(FIELD-PROVIDED)

D

C

B

A

35

(2)

40

(4)

45

(7)

50

(10)

55

(13)

60

(16)

65

(18)

70

(21)

75

(24)

80

(27)

85

(29)

90

(32)

95

(35)

100

(38)

APPROXIMATE DRY BULB TEMPERATURE--degrees F (degrees C)

105

(41)

110

(43)

HIGH LIMIT

CURVE

35

FIGURE 50

Economizer Control

N1

P1

T1

N

P

T

AQ1

AQ

SO+

SO

SR+

SR

EXH

Set

10V 2V

EXH

Open

Min

Pos

DCV

Max

10V 2V

DCV

2V

Free

Cool

B

A

DCV

Set

10V

C

D

TR

TR1

24

Vac

HOT

+

24 Vac

COM

_

1

3

EF

2

5

4

EF1

Differential Enthalpy Control

For differential enthalpy control, the Economizer controller uses two enthalpy sensors (AXB078ENT and

DNENTDIF004A00), one in the outside air and one in the return air duct. The economizer controller compares the outdoor air enthalpy to the return air enthalpy to determine economizer use. The controller selects the lower enthalpy air (return or outdoor) for cooling. For example, when the outdoor air has a lower enthalpy than the return air, the economizer opens to bring in outdoor air for free cooling.

Replace the standard outside air dry bulb temperature sensor with the accessory enthalpy sensor in the same mounting location. (See Fig. 41.) Mount the return air enthalpy sensor in the return air duct. (See Fig. 48.)

Wiring is provided in the economizer wiring harness. (See

Fig. 41.) The outdoor enthalpy changeover setpoint is set with the outdoor enthalpy setpoint potentiometer on the

Economizer controller. When using this mode of changeover control, turn the enthalpy setpoint potentiometer fully clockwise to the D setting.

Indoor Air Quality (IAQ) Sensor Input

The IAQ input can be used for demand control ventilation control based on the level of CO

2 measured in the space or return air duct.

Mount the accessory IAQ sensor according to manufacturer specifications. The IAQ sensor should be wired to the AQ and AQ1 terminals of the controller.

Adjust the DCV potentiometers to correspond to the DCV voltage output of the indoor air quality sensor at the user-determined setpoint. (See Fig. 51.)

FIGURE 51

CO

2

Sensor Maximum Range Settings

6000

5000

4000

3000

2000

1000

800 ppm

900 ppm

1000 ppm

1100 ppm

0

2 3 4 5 6 7 8

DAMPER VOLTAGE FOR MAX VENTILATION RATE

If a separate field-supplied transformer is used to power the IAQ sensor, the sensor must not be grounded or the

Economizer control board will be damaged.

When using demand ventilation, the minimum damper position represents the minimum ventilation position for

VOC (volatile organic compounds) ventilation requirements. The maximum demand ventilation position is used for fully occupied ventilation.

When demand ventilation control is not being used, the minimum position potentiometer should be used to set the occupied ventilation position. The maximum demand ventilation position should be turned fully clockwise.

Exhaust Setpoint Adjustment

The exhaust setpoint will determine when the exhaust fan runs based on damper position (if accessory power exhaust is installed). The setpoint is modified with the

Exhaust Fan Setpoint (EXH SET) potentiometer. (See

Fig. 45.) The setpoint represents the damper position above which the exhaust fans will be turned on. When there is a call for exhaust, the Economizer controller provides a 45 ±15 second delay before exhaust fan activation to allow the dampers to open. This delay allows the damper to reach the appropriate position to avoid unnecessary fan overload.

Minimum Position Control

There is a minimum damper position potentiometer on the economizer controller. (See Fig. 45.) The minimum damper position maintains the minimum airflow into the building during the occupied period.

When using demand ventilation, the minimum damper position represents the minimum ventilation position for

VOC (volatile organic compound) ventilation requirements. The maximum demand ventilation position is used for fully occupied ventilation.

When demand ventilation control is not being used, the minimum position potentiometer should be used to set the occupied ventilation position. The maximum demand ventilation position should be turned fully clockwise.

Adjust the minimum position potentiometer to allow the minimum amount of outdoor air, as required by local

36

codes, to enter the building. Make minimum position adjustments with at least 10_F temperature difference between the outdoor and return-air temperatures.

To determine the minimum position setting, perform the following procedure:

1. Calculate the appropriate mixed air temperature using the following formula:

(T

O x

OA

100

) + (T

R x

RA

100

) =T

M

T

O

= Outdoor-Air Temperature

OA = Percent of Outdoor Air

T

R

= Return-Air Temperature

RA = Percent of Return Air

T

M

= Mixed-Air Temperature

As an example, if local codes require 10% outdoor air during occupied conditions, outdoor-air temperature is

60_F, and return-air temperature is 75_F.

(60 x .10) + (75 x .90) = 73.5_F

2. Disconnect the supply air sensor from terminals T and

T1.

3. Ensure that the factory-installed jumper is in place across terminals P and P1. If remote damper positioning is being used, make sure that the terminals are wired according to Fig. 42 and that the minimum position potentiometer is turned fully clockwise.

4. Connect 24 vac across terminals TR and TR1.

5. Carefully adjust the minimum position potentiometer until the measured mixed air temperature matches the calculated value.

6. Reconnect the supply air sensor to terminals T and

T1.

Remote control of the economizer damper is desirable when requiring additional temporary ventilation. If a field-supplied remote potentiometer (Honeywell part number S963B1128) is wired to the economizer controller, the minimum position of the damper can be controlled from a remote location.

To control the minimum damper position remotely, remove the factory-installed jumper on the P and P1 terminals on the economizer controller. Wire the field-supplied potentiometer to the P and P1 terminals on the economizer controller. (See Fig. 50.)

Damper Movement

Damper movement from full open to full closed (or vice versa) takes 2

1

/

2 minutes.

Thermostats

The economizer control works with conventional thermostats that have a Y1 (cool stage 1), Y2 (cool stage

2), W1 (heat stage 1), W2 (heat stage 2), and G (fan).

The economizer control does not support space temperature sensors. Connections are made at the thermostat terminal connection board located in the main control box.

Occupancy Control

The factory default configuration for the economizer control is occupied mode. Occupied status is provided by the black jumper from terminal TR to terminal N. When unoccupied mode is desired, install a field--supplied timeclock function in place of the jumper between TR and N. When the timeclock contacts are closed, the

Economizer control will be in occupied mode. When the timeclock contacts are open (removing the 24--v signal from terminal N), the Economizer will be in unoccupied mode.

Demand Control Ventilation (DCV)

When using the economizer for demand controlled ventilation, there are some equipment selection criteria which should be considered. When selecting the heat capacity and cool capacity of the equipment, the maximum ventilation rate must be evaluated for design conditions. The maximum damper position must be calculated to provide the desired fresh air.

Typically the maximum ventilation rate will be about 5 to

10% more than the typical cfm required per person, using normal outside air design criteria.

A proportional anticipatory strategy should be taken with the following conditions: a zone with a large area, varied occupancy, and equipment that cannot exceed the required ventilation rate at design conditions. Exceeding the required ventilation rate means the equipment can condition air at a maximum ventilation rate that is greater than the required ventilation rate for maximum occupancy.

A proportional-anticipatory strategy will cause the fresh air supplied to increase as the room CO even though the CO the time the CO setpoint.

2

2

2 level increases setpoint has not been reached. By level reaches the setpoint, the damper will be at maximum ventilation and should maintain the

In order to have the CO

2 sensor control the economizer damper in this manner, first determine the damper voltage output for minimum or base ventilation. Base ventilation is the ventilation required to remove contaminants during unoccupied periods. The following equation may be used to determine the percent of outside air entering the building for a given damper position. For best results there should be at least a 10 degree difference in outside and return-air temperatures.

(T

O x

OA

100

) + (T

R x

RA

100

T

O

= Outdoor-Air Temperature

OA = Percent of Outdoor Air

) =T

M

T

R

= Return-Air Temperature

RA = Percent of Return Air

T

M

= Mixed-Air Temperature

37

Once base ventilation has been determined, set the minimum damper position potentiometer to the correct position.

The same equation can be used to determine the occupied or maximum ventilation rate to the building. For example, an output of 3.6 volts to the actuator provides a base ventilation rate of 5% and an output of 6.7 volts provides the maximum ventilation rate of 20% (or base plus 15 cfm per person). Use Fig. 51 to determine the maximum setting of the CO

2 sensor. For example, an

1100 ppm setpoint relates to a 15 cfm per person design.

Use the 1100 ppm curve on Fig. 51 to find the point when the CO

2 sensor output will be 6.7 volts. Line up the point on the graph with the left side of the chart to determine that the range configuration for the CO

2 sensor should be

1800 ppm. The Economizer controller will output the 6.7

volts from the CO

2 sensor to the actuator when the CO

2 concentration in the space is at 1100 ppm. The DCV setpoint may be left at 2 volts since the CO

2 sensor voltage will be ignored by the Economizer controller until it rises above the 3.6 volt setting of the minimum position potentiometer.

Once the fully occupied damper position has been determined, set the maximum damper demand control ventilation potentiometer to this position. Do not set to the maximum position as this can result in over-ventilation to the space and potential high humidity levels.

Use setting 1 or 2. (See Table 16.)

1. Press Clear and Mode buttons. Hold at least 5 seconds until the sensor enters the Edit mode.

2. Press Mode twice. The STDSET Menu will appear.

3. Use the Up/Down button to select the preset number.

(See Table 16.)

4. Press Enter to lock in the selection.

5. Press Mode to exit and resume normal operation.

The custom settings of the CO

2 sensor can be changed anytime after the sensor is energized. Follow the steps below to change the non-standard settings:

1. Press Clear and Mode buttons. Hold at least 5 seconds until the sensor enters the Edit mode.

2. Press Mode twice. The STDSET Menu will appear.

3. Use the Up/Down button to toggle to the NONSTD menu and press Enter.

4. Use the Up/Down button to toggle through each of the nine variables, starting with Altitude, until the desired setting is reached.

5. Press Mode to move through the variables.

6. Press Enter to lock in the selection, then press Mode to continue to the next variable.

CO

2

Sensor Configuration

The CO

2 sensor has preset standard voltage settings that can be selected anytime after the sensor is powered up.

(See Table 16.)

Dehumidification of Fresh Air with DCV (Demand

Controlled Ventilation) Control

If normal rooftop heating and cooling operation is not adequate for the outdoor humidity level, an energy recovery unit and/or a dehumidification option should be considered.

Table 16 – CO2 Sensor Standard Settings

SETTING EQUIPMENT

1

2

3

4

Interface w/Standard

Building Control System

5

6

7

Economizer

8

Health & Safety

9

Parking/Air Intakes/

Loading Docks

LEGEND:

ppm — Parts Per Million

OUTPUT

Proportional

Proportional

Exponential

Proportional

Proportional

Exponential

Exponential

Proportional

Proportional

VENTILATION

RATE

(cfm/Person)

Any

20

—

20

15

—

Any

Any

15

ANALOG

OUTPUT

0-10V

4-20 mA

2-10V

7-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

CO

CONTROL RANGE

(ppm)

0-2000

OPTIONAL

RELAY SETPOINT

(ppm)

1000

RELAY

HYSTERESIS

(ppm)

50

0-2000

0-2000

0-1100

0- 900

0-1100

0- 900

0-9999

0-2000

1000

1100

1100

900

1100

900

5000

700

50

50

50

500

50

50

50

50

38

Economizer Preparation

This procedure is used to prepare the Economizer for troubleshooting. No troubleshooting or testing is done by performing the following procedure.

NOTE: This procedure requires a 9--v battery, 1.2

kilo--ohm resistor, and a 5.6 kilo--ohm resistor which are not supplied with the Economizer.

IMPORTANT: Be sure to record the positions of all potentiometers before starting troubleshooting.

1. Disconnect power at TR and TR1. All LEDs should be off. Exhaust fan contacts should be open.

2. Disconnect device at P and P1.

3. Jumper P to P1.

4. Disconnect wires at T and T1. Place 5.6 kilo--ohm resistor across T and T1.

5. Jumper TR to 1.

6. Jumper TR to N.

7. If connected, remove sensor from terminals SO and

+. Connect 1.2 kilo--ohm 4074EJM checkout resistor across terminals SO and +.

8. Put 620--ohm resistor across terminals SR and +.

9. Set minimum position, DCV setpoint, and exhaust potentiometers fully CCW (counterclockwise).

10. Set DCV maximum position potentiometer fully CW

(clockwise).

11. Set enthalpy potentiometer to D.

12. Apply power (24 vac) to terminals TR and TR1.

Differential Enthalpy

To check differential enthalpy:

1. Make sure Economizer preparation procedure has been performed.

2. Place 620--ohm resistor across SO and +.

3. Place 1.2 kilo--ohm resistor across SR and +. The

Free Cool LED should be lit.

4. Remove 620--ohm resistor across SO and +. The

Free Cool LED should turn off.

5. Return Economizer settings and wiring to normal after completing troubleshooting.

Single Enthalpy

To check single enthalpy:


2. Set the enthalpy potentiometer to A (fully CCW). The

Free Cool LED should be lit.

3. Set the enthalpy potentiometer to D (fully CW). The

Free Cool LED should turn off.


DCV (Demand Controlled Ventilation) and Power

Exhaust

To check DCV and Power Exhaust:


2. Ensure terminals AQ and AQ1 are open. The LED for both DCV and Exhaust should be off. The actuator should be fully closed.

3. Connect a 9--v battery to AQ (positive node) and AQ1

(negative node). The LED for both DCV and Exhaust should turn on. The actuator should drive to between

90 and 95% open.

4. Turn the Exhaust potentiometer CW until the Exhaust

LED turns off. The LED should turn off when the potentiometer is approximately 90%. The actuator should remain in position.

5. Turn the DCV setpoint potentiometer CW until the

DCV LED turns off. The DCV LED should turn off when the potentiometer is approximately 9--v. The actuator should drive fully closed.

6. Turn the DCV and Exhaust potentiometers CCW until the Exhaust LED turns on. The exhaust contacts will close 30 to 120 seconds after the Exhaust LED turns on.


DCV Minimum and Maximum Position

To check the DCV minimum and maximum position:


2. Connect a 9--v battery to AQ (positive node) and AQ1

(negative node). The DCV LED should turn on. The actuator should drive to between 90 and 95% open.

3. Turn the DCV Maximum Position potentiometer to midpoint. The actuator should drive to between 20 and 80% open.

4. Turn the DCV Maximum Position potentiometer to fully CCW. The actuator should drive fully closed.

5. Turn the Minimum Position potentiometer to midpoint.

The actuator should drive to between 20 and 80% open.

6. Turn the Minimum Position Potentiometer fully CW.

The actuator should drive fully open.

7. Remove the jumper from TR and N. The actuator should drive fully closed.


Supply--Air Sensor Input

To check supply--air sensor input:


2. Set the Enthalpy potentiometer to A. The Free Cool

LED turns on. The actuator should drive to between

20 and 80% open.

3. Remove the 5.6 kilo--ohm resistor and jumper T to T1.

The actuator should drive fully open.

4. Remove the jumper across T and T1. The actuator should drive fully closed.

39


Economizer Troubleshooting Completion

This procedure is used to return the Economizer to operation. No troubleshooting or testing is done by performing the following procedure.

1. Disconnect power at TR and TR1.

2. Set enthalpy potentiometer to previous setting.

3. Set DCV maximum position potentiometer to previous setting.

4. Set minimum position, DCV setpoint, and exhaust potentiometers to previous settings.

5. Remove 620--ohm resistor from terminals SR and +.

6. Remove 1.2 kilo--ohm checkout resistor from terminals SO and +. If used, reconnect sensor from terminals SO and +.

7. Remove jumper from TR to N.

8. Remove jumper from TR to 1.

9. Remove 5.6 kilo--ohm resistor from T and T1.

Reconnect wires at T and T1.

10. Remove jumper from P to P1. Reconnect device at P and P1.

11. Apply power (24 vac) to terminals TR and TR1.

WIRING DIAGRAMS

See Figure 52 and 53 for Typical Wiring Diagrams

FIGURE 52

208/230, 460, 575V -- 3 Phase

40

FIGURE 53

RHS Typical Unit Wiring Diagram -- Power (Unit 090 208/230--3--60)

41

PRE--START--UP

!

WARNING

PERSONAL INJURY HAZARD


1. Follow recognized safety practices and wear protective goggles when checking or servicing refrigerant system.

2. Do not operate compressor or provide any electric power to unit unless compressor terminal cover is in place and secured.

3. Do not remove compressor terminal cover until all electrical sources are disconnected.

4. Relieve all pressure from system before touching or disturbing anything inside terminal box if refrigerant leak is suspected around compressor terminals.

5. Never attempt to repair soldered connection while refrigerant system is under pressure.

6. Do not use torch to remove any component.

System contains oil and refrigerant under pressure. To remove a component, wear protective goggles and proceed as follows: a. Shut off electrical power to unit.

b. Recover refrigerant to relieve all pressure from system using both high--pressure and low pressure ports.

c. Cut component connection tubing with tubing cutter and remove component from unit.

d. Carefully unsweat remaining tubing stubs when necessary. Oil can ignite when exposed to torch flame.

!

WARNING



The unit must be electrically grounded in accordance with local codes and NEC ANSI/NFPA

70 (American National Standards

Institute/National Fire Protection Association.)

Proceed as follows to inspect and prepare the unit for initial start--up:

1. Remove all access panels.

2. Read and follow instructions on all WARNING,

CAUTION, and INFORMATION labels attached to, or shipped with, unit.

!

WARNING

PERSONAL INJURY AND ENVIRONMENTAL

HAZARD


Relieve pressure and recover all refrigerant before system repair or final unit disposal.

Wear safety glasses and gloves when handling refrigerants.

Keep torches and other ignition sources away from refrigerants and oils.

3. Make the following inspections: a. Inspect for shipping and handling damages such as broken lines, loose parts, or disconnected wires, etc.

b. Inspect for oil at all refrigerant tubing connections and on unit base. Detecting oil generally indicates a refrigerant leak. Leak--test all refrigerant tubing connections using electronic leak detector, halide torch, or liquid--soap solution.

c. Inspect all field--wiring and factory--wiring connections. Be sure that connections are completed and tight. Be sure that wires are not in contact with refrigerant tubing or sharp edges.

d. Inspect coil fins. If damaged during shipping and handling, carefully straighten fins with a fin comb.

4. Verify the following conditions: a. Make sure that condenser--fan blade are correctly positioned in fan orifice. See Condenser--Fan

Adjustment section for more details.

b. Make sure that air filter(s) is in place.

c. Make sure that condensate drain trap is filled with water to ensure proper drainage.

d. Make sure that all tools and miscellaneous loose parts have been removed.

START--UP, GENERAL

Unit Preparation

Make sure that unit has been installed in accordance with installation instructions and applicable codes.

Return--Air Filters

Make sure correct filters are installed in unit (see

Appendix II -- Physical Data). Do not operate unit without return--air filters.

Outdoor--Air Inlet Screens

Outdoor--air inlet screen must be in place before operating unit.

Compressor Mounting

Compressors are internally spring mounted. Do not loosen or remove compressor hold down bolts.

Internal Wiring

Check all electrical connections in unit control boxes.

Tighten as required.

42

Refrigerant Service Ports

Each unit system has two

1

/

4

” SAE flare (with check valves) service ports: one on the suction line, and one on the compressor discharge line. Be sure that caps on the ports are tight.

Compressor Rotation

On 3--phase units with scroll compressors, it is important to be certain compressor is rotating in the proper direction. To determine whether or not compressor is rotating in the proper direction:

1. Connect service gauges to suction and discharge pressure fittings.

2. Energize the compressor.

3. The suction pressure should drop and the discharge pressure should rise, as is normal on any start--up.

If the suction pressure does not drop and the discharge pressure does not rise to normal levels:

1. Note that the evaporator fan is probably also rotating in the wrong direction.

2. Turn off power to the unit and install lockout tag.

3. Reverse any two of the unit power leads.

4. Re--energize to the compressor. Check pressures.

The suction and discharge pressure levels should now move to their normal start--up levels.

NOTE: When the compressor is rotating in the wrong direction, the unit will make an elevated level of noise and will not provide cooling.

Cooling

Set space thermostat to OFF position. To start unit, turn on main power supply. Set system selector switch at

COOL position and fan switch at AUTO. position. Adjust thermostat to a setting below room temperature.

Compressor starts on closure of contactor. (090–102:

Second stage of thermostat will energize Circuit 2 contactor, start Compressor 2.)

Check unit charge. Refer to Refrigerant Charge section.

Reset thermostat at a position above room temperature.

Compressor will shut off. Evaporator fan will shut off after a 30--second delay.

To shut off unit -- set system selector switch at OFF position. Resetting thermostat at a position above room temperature shuts unit off temporarily until space temperature exceeds thermostat setting.

Heating

To start unit, turn on main power supply.

Set system selector switch at HEAT position and set thermostat at a setting above room temperature. Set fan at AUTO position.

First stage of thermostat energizes compressor heating

(090–102: both compressors will start). Second stage of thermostat energizes electric heaters (if installed). Check heating effects at air supply grille(s).

If electric heaters do not energize, reset limit switch

(located on supply--fan scroll) by pressing button located between terminals on the switch.

To shut off unit -- set system selector switch at OFF position. Resetting thermostat at a position below room temperature temporarily shuts unit off until space temperature falls below thermostat setting.

Ventilation (Continuous Fan)

Set fan and system selector switches at ON and OFF positions, respectively. Supply fan operates continuously to provide constant air circulation.

OPERATING SEQUENCE

Indoor (Supply) Fan

Continuous fan operation is selected at the thermostat.

Terminal G is energized. Defrost Board (DFB) receives this signal at P2--3 and it issues an output at P3--9.

036--060, Standard Static Drive option: 24--v signal at

P3--9 is applied to direct--drive motor communication signal terminal. Direct--drive motor starts and runs.

All Belt--Drive Fan options: Contactor coil IFC is energized; indoor fan motor starts.

Fan runs continuously until fan selection at thermostat is changed to AUTO. When the selector switch is switched to AUTO, the input at P2--3 is removed and the output at

P3--9 is removed; IFC is de--energized and IFM stops. If the fan selection is AUTO, indoor fan operation will be initiated by the DFB through P3--9 when Cooling or

Heating sequence is initiated. Termination of fan operation will be delayed by 30 secs (if Fan Delay is configured to

ON) after Cooling or Heating sequence is ended

Base Unit Controls

Cooling, Units Without Economizer

Continuous fan operation is selected at the thermostat.

Terminal G is energized. Defrost Board (DFB) receives this signal at P2--3 and it issues an output at P3--9.

036--060, Standard Static Drive option: 24--v signal at

P3--9 is applied to direct--drive motor communication signal terminal. Direct--drive motor starts and runs.

All Belt--Drive Fan options: Contactor coil IFC is energized; indoor fan motor starts.

Fan runs continuously until fan selection at thermostat is changed to AUTO. When the selector switch is switched to AUTO, the input at P2--3 is removed and the output at

P3--9 is removed; IFC is de--energized and IFM stops. If the fan selection is AUTO, indoor fan operation will be initiated by the DFB through P3--9 when Cooling or

Heating sequence is initiated. Termination of fan operation will be delayed by 30 secs (if Fan Delay is configured to

ON) after Cooling or Heating sequence is ended.

The outdoor fan motors run continuously while unit is in

Stage 1 or Stage 2 cooling.

090–102: If Stage 1 cooling does not satisfy the space load, the space temperature will rise until thermostat calls

43

for Stage 2 cooling (Y2 closes). DFB receives this input at P2--4. It issues outputs at P3--6 (RVS2) and P3--8

(COMP2). Reversing valve 2 switches to Cooling position.

Compressor 2 contactor (C2) is energized; Compressor 2 starts and Circuit 2 operates in Cooling mode.

When Cooling Stage 2 is satisfied, thermostat Y2 opens.

Compressor 2 contactor (C2) is de--energized;

Compressor 2 stops. RVS2 remains energized.

When Cooling Stage 1 is satisfied, thermostat Y1 opens.

Compressor 1 contactor (C1) is de--energized;

Compressor 1 stops.

Outdoor fan relay OFR is de--energized; outdoor fans stop. After the Fan Delay period, the Indoor fan contactor IFC is de--energized; indoor fan stops (unless Continuous Fan operation has been selected). RVS1 remains energized.

Reversing valve solenoids are energized in Cooling modes. Each solenoid will remain energized until the next

Heating mode is initiated for this circuit.

Heating, Units Without Economizer

036--072 (single compressor model): When the thermostat calls for heating, terminal W1 is energized.

DFB receives this input at P2–7. The DFB removes the output at P3–7 (RVS1) reversing valve solenoid is de--energized and reversing valve moves to Heating position. DFB issues outputs at P3–9 (IFO), OF, and

P3–10 (COMP1). The indoor fan motor or contactor (IFC) is energized; indoor fan motor starts. Outdoor fan relay

OFR is energized; outdoor fan motor runs. Compressor contactor C1 is energized; refrigeration circuit operates in

Heating mode.

090--102 (two compressor model): When the thermostat calls for heating, terminal W1 is energized. DFB receives this input at P2–7. The DFB removes the outputs at P3–7

(RVS1) and P3–6 (RVS2)); both reversing valve solenoids are de--energized and reversing valves move to Heating position. DFB issues outputs at P3–9 (IFO), OF, P3–10

(COMP1) and P3–8 (COMP2)). The indoor fan contactor

(IFC) is energized; indoor fan motor starts. Outdoor fan relay OFR is energized; both outdoor fan motors run.

Compressor contactors C1 and C2 are energized; both refrigeration circuits operate in Heating mode.

If Stage 1 heating does not satisfy the space load, the space temperature will fall until thermostat calls for Stage

2 heating (W2 closes). Terminal W2 is energized. DFB receives input at P2--6. DFB issues an output at EHEAT.

Heater contactor 1 (HC1) and heater contactor 2 (HC2) (if installed) are energized; all electric heaters are energized.

When space heating load is partially satisfied, thermostat terminal W2 is de--energized; this signal is removed at

DFB P2--6. DFB output at EHEAT is removed; heater contactors HC1 and HC2 are de--energized and all electric heat is terminated. Stage 1 heating continues.

When the space heating load is fully satisfied, thermostat terminal W1 is also de--energized. DFB removes outputs at P3--10 (COMP1), P3--8 (COMP2) and OF. All compressor and outdoor fan operations cease. After the

Fan Delay period, output P3--9 is removed and IFM

44 operations cease (unless Continuous Fan operation has been selected).

Reversing valve solenoids remain de--energized until the next call for Cooling mode is initiated.

Cooling, Unit With Economizer

For Occupied mode operation of Economizer, there must be a 24--v signal at terminal N (provided through harness plug PL6--3 from the unit’s IFC coil). Removing the signal at N places the Economizer control in Unoccupied mode.

During Occupied mode operation, indoor fan operation will be accompanied by economizer dampers moving to

Minimum Position setpoint for ventilation. If indoor fan is off, dampers will close. During Unoccupied mode operation, dampers will remain closed unless a Cooling

(by free cooling) or DCV demand is received.

When free cooling using outside air is not available, the unit cooling sequence will be controlled directly by the space thermostat as described above in Cooling, Unit

Without Economizer. Outside air damper position will be closed or Minimum Position as determined by occupancy mode and fan signal.

When free cooling is available as determined by the appropriate changeover command (dry bulb, outdoor enthalpy, differential dry bulb or differential enthalpy), a call for cooling (Y1 closes at the thermostat, signal through PL6--2 to Econo--1) will cause the economizer control to modulate the dampers open and closed to maintain the unit supply air temperature at 50_F to 55_F

(10_C to 12.8_C). Compressor will not run.

During free cooling operation, a supply air temperature

(SAT) above 50_F (10_C) will cause the dampers to modulate between Minimum Position setpoint and 100% open. With SAT from 50_F to 45_F (10_C to 7.2_C), the dampers will maintain at the Minimum Position setting.

With SAT below 45_F (7.2_C), the outside air dampers will be closed. When SAT rises to 48_F (8.9_C), the dampers will re--open to Minimum Position setting.

Should 100% outside air not be capable of satisfying the space temperature, space temperature will rise until Y2 is closed. The economizer control will call for compressor operation. Y2 signal is transferred to the DFB’s Y1 input

(P2--5). Stage 1 Cooling is initiated as described above in

Cooling, Unit Without Economizer. Dampers will modulate to maintain SAT at 50_F to 55_F (10_C to 12.8_C) concurrent with Compressor 1 operation.

When thermostat Stage 2 cooling is satisfied, DFB outputs for

COMP1 and OF will be removed and mechanical cooling sequence will terminate.

The Low Ambient Lockout Thermostat will block compressor operation with economizer operation below

42_F (5.6_C ) outside air temperature.

When space temperature demand is satisfied (thermostat

Y1 opens), the dampers will return to Minimum Damper position if indoor fan is running or fully closed if fan is off.

If accessory power exhaust is installed, the power exhaust fan motors will be energized by the economizer control as the dampers open above the PE--On setpoint

and will be de--energized as the dampers close below the

PE--On setpoint.

Damper movement from full closed to full open (or vice versa) will take between 1

1

/

2 and 2

1

/

2 minutes.

Heating With Economizer

During Occupied mode operation, indoor fan operation will be accompanied by economizer dampers moving to

Minimum Position setpoint for ventilation. If indoor fan is off, dampers will close. During Unoccupied mode operation, dampers will remain closed unless a DCV demand is received.

When the room temperature calls for heat (W1 closes), the heating controls are energized as described in

Heating, Unit Without Economizer above.

Defrost Cycle

During the Heating Mode, frost and ice can develop on the outdoor coil. Defrost sequence will clear the frost and ice from the coil by briefly reversing the Heating sequence periodically.

A window to test for a need to run the Defrost cycle opens

30 minutes after the end of the last Defrost cycle or the previous test window closed. If DFT2 is closed, the

Defrost cycle will start. Output at OF is removed; outdoor fans stop during the Defrost cycle. Output P3--6 (RVS2) is energized; reversing valve solenoid RVS2 is energized and reversing valve 2 changes position, placing Circuit 2 in a Cooling mode flow, directing hot gas into the outdoor coil where its heat melts the frost and looses the ice on the coil face.

During the Defrost cycle, output EHEAT is also energized

(if not already energized by a thermostat W2 demand); electric heaters will be energized.

During the Defrost Cycle, LED1 on the DFB will be illuminated.

The Defrost cycle ends when DFT2 opens (as liquid temperature exiting the coil rises above DFT2 setpoint) or the defrost cycle runs for 10 minutes. Output at EHEAT is removed; electric heaters will be de--energized (unless thermostat has a W2 demand). Output at OF is restored; outdoor fans start again. Output at P3--6 (RVS2) is removed; reversing valve 2 returns to Heating position.

During the Circuit 2 defrost cycle, Circuit 1 may also enter defrost cycle if DFT1 closes. When DFT1 closes, DFB output P3--7 (RVS1) is energized; reversing valve solenoid 1 is energized, causing reversing valve 1 to switch position and place Circuit 1 in a Cooling mode flow.

Defrost in Circuit 1 ends when DFT1 opens or defrost cycle in Circuit 2 is terminated.

Defrost cycle is fixed at a maximum 10 minute duration limit. The period to test and initiate a Defrost cycle can be selected at 30, 60, 90 or 120 minutes.

Emergency Heat

Emergency Heat is a non--staged heating cycle that uses the unit’s electric heaters only (no compression heating is energized). Emergency Heat is initiated when the defrost board receives an input signal at W2 (P2--6) but there is no input signal at W1 (P2--7). This signal combination can be provided by thermostat configuration, manual external switch selection or by servicer disconnecting the W1 field connection.

Upon initiation of the Emergency Heat sequence, the DFB will issue output signals at IFO (P3--9) and EHEAT; IFM will run and electric heaters will be energized.

When space heating load is satisfied, the input signal at

W2 (P2--6) will be removed. Output at EHEAT is removed; electric heaters are de--energized. After the Fan Delay period, the signal at IFO (P3--9) is removed; IFM stops.

Demand Controlled Ventilation

If a field--installed sensor is connected to the Economizer control, a Demand Controlled Ventilation strategy will operate automatically. As the level in the space increases above the setpoint (on the Economizer controller), the minimum position of the dampers will be increased proportionally, until the Maximum Ventilation setting is reached. As the space level decreases because of the increase in fresh air, the outdoor--damper will follow the higher demand condition from the DCV mode or from the free--cooling mode.

DCV operation is available in Occupied and Unoccupied periods with Economizer. However, a control modification will be required on the RHS unit to implement the

Unoccupied period function.

Supplemental Controls

Compressor Lockout Relay (CLO) – The CLO is available as a field-installed accessory. Each compressor has a

CLO. The CLO compares the demand for compressor operation (via a 24-v input from Y at CLO terminal 2) to operation of the compressor (determined via compressor current signal input at the CLO s current transformer loop); if the compressor current signal is lost while the demand input still exists, the CLO will trip open and prevent the compressor from restarting until the CLO has been manually reset. In the lockout condition, 24-v will be available at terminal X. Reset is accomplished by removing the input signal at terminal 2; open the thermostat briefly or cycle the main power to the unit.

Phase Monitor Relay (PMR) – The PMR protects the unit in the event of a loss of a phase or a reversal of power line phase in the three-phase unit power supply. In normal operation, the relay K1 is energized (contact set closed) and red LED indicator is on steady. If the PMR detects a loss of a phase or a phase sequence reversal, the relay

K1 is energized, its contact set is opened and unit operation is stopped; red LED indicator will blink during lockout condition. Reset of the PMR is automatic when all phases are restored and phase sequence is correct. If no

24-v control power is available to the PMR, the red LED will be off.

45

FASTENER TORQUE VALUES

See Table 17 for torque values.

Supply fan motor mounting

Supply fan motor adjustment plate

Motor pulley setscrew

Fan pulley setscrew

Blower wheel hub setscrew

Bearing locking collar setscrew

Compressor mounting bolts

Condenser fan motor mounting bolts

Condenser fan motor mounting bolts

Condenser fan hub setscrew

036---060 Direct---Drive:

Motor mount arm

Fan wheel hub setscrew

Motor belly band bolt

Table 17 – Torque Values

120 ¦ 12 in---lbs

120 ¦ 12 in---lbs

72 ¦ 5 in---lbs

72 ¦ 5 in---lbs

72 ¦5 in---lbs

65 to70 in---lbs

65 to75 in---lbs

65 to75 in---lbs

20 ¦ 2 in---lbs

84 ¦ 12 in---lbs

60 ¦ 5 in---lbs

120 ¦ 12 in---lbs

80 ¦ 5 in---lbs

13.6 ¦ 1.4 Nm

13.6 ¦ 1.4 Nm

8.1 ¦ 0.6 Nm

8.1 ¦ 0.6 Nm

8.1 ¦0.6 Nm

7.3 to 7.9 Nm

7.3 to 7.9 Nm

7.3 to 7.9 Nm

2.3 ¦ 0.2 Nm

9.5 ¦ 1.4 Nm

6.8 ¦ 0.5 Nm

13.6 ¦ 1.4 Nm

9.0 ¦ 0.6 Nm

46

APPENDIX I. MODEL NUMBER SIGNIFICANCE

MODEL SERIES

Position Number

R = Rooftop

R

1

MODEL NUMBER NOMENCLATURE

H

2

S

3

0

4

9

5

0

6

H

7

0

8

A

9

B

10

0

11

A

12

A

13

A

14

A = Air Conditioning (Cooling Only)

H = Heat Pump

G = Gas/Electric

S = Standard ASHRAE 90.1--2010 Efficiency

036 = 36,000 = 3 Tons

048 = 48,000 = 4 Tons

060 = 60,000 = 5 Tons

072 = 72,000 = 6 Tons

090 = 90,000 = 7.5 Tons (Dual Compressor)

102 = 102,000 = 8.5 Tons (Dual Compressor)

K = 208/230--1--60

H = 208/230--3--60

L = 460--3--60

S = 575--3--60

A = Standard

Serial Number Format

Type

Efficiency

Nominal Cooling Capacity

0 = No Heat

X = Direct drive X13 Motor (3--5 Ton)

A = Standard Static Option -- Belt Drive (6--8.5 Ton)

B = High Static Option (Belt Drive)

A = None

B = Economizer w/Bara--relief, OA Temp sensor

E = Economizer w/Bara--relief + CO2 Sensor, OA Temp sensor

H = Economizer w/Bara--relief, enthalpy sensor

L = Economizer w/Bara--relief + CO2 Sensor, enthalpy sensor

P = 2--Position damper w/Baro--relief

0A = No Options

4B = Non--Fused Disconnect

AT = Non--powered 115v C.O.

BR = Supply Air Smoke Detector

7C = Non--Fused Disconnect + Non--Powered 115v C.O.

7K = Non--Fused Disconnect + Non--Powered 115v C.O.+ SA Smoke detector

8A = Non--Fused Disconnect + SA Smoke detector

A = Aluminum / Copper Cond & Evap Coil

B = Precoat Alum/CU Cond & Alum / CU Evap

C = E--Coated Alum/Cu Cond & Alum / CU Evap

D = E--Coated Alum / Cu Cond & Evap

F = Copper/Copper Cond & Evap

Voltage

Heating Capacity

Motor Option

Outdoor Air Options / Control

Factory Installed Options

Condenser / Evaporator Coil Configuration

Unit Packaging

POSITION NUMBER

TYPICAL

2

0

3

9

8

3

9

4

1

G

POSITION

1

2---3

4---5

6---10

4

3

5

5

6

1

7

2

DESIGNATES

Manufacturing location (G = ETP, Texas, USA)

Year of manufacture (“08” = 2008)

Week of manufacture (fiscal calendar)

Sequential number

10

5

47

APPENDIX II. PHYSICAL DATA

Physical Data (Cooling) 3 -- 6 TONS

RHS036

Refrigeration System

# Circuits / # Comp. / Type

R---410A charge per circuit A/B (lbs---oz)

High---pressure Trip / Reset (psig)

Loss of Charge Pressure Trip / Reset (psig)

Evap. Coil

Oil A/B (oz)

Metering Device

Material

Coil type

Rows / FPI

Total Face Area (ft

2

)

Condensate Drain Conn. Size

Evap. Fan and Motor

1 / 1 / Scroll

9 --- 8 / ---

42 / ---

630 / 505

27 / 44

Cu / Al

3/8” RTPF

3 / 15

5.5

3/4”

RHS048

1 / 1 / Scroll

10 ---3 / ---

42 / ---

Fixed Orifice

1 / 1 / Scroll

12 --- 13 / ---

42 / ---

630 / 505

27 / 44

630 / 505

27 / 44

Cu / Al

3/8” RTPF

3 / 15

5.5

3/4”

RHS060

Cu / Al

3/8” RTPF

4/ 15

7.3

3/4”

Motor Qty / Drive Type

Max BHP

RPM Range

Motor Frame Size

Fan Qty / Type

Fan Diameter x Length (in)


Max BHP

RPM Range

Motor Frame Size

Fan Qty / Type



Max BHP

RPM Range

Motor Frame Size

Fan Qty / Type


Cond. Coil

Material

Coil type

Rows / FPI

Total Face Area (ft

2

)

Cond. fan / motor

Qty / Motor Drive Type

Motor HP / RPM

Fan diameter (in)

Filters

RA Filter # / Size (in)

OA inlet screen # / Size (in)

* RTPF = Round tube plate fin coil design.

1 / Direct

1

600---1200

48

1 / Centrifugal

10 x 10

1 / Direct

1

600---1200

48

1 / Centrifugal

10 x 10

1 / Belt

2

1035---1466

56

1 / Centrifugal

10 x 10

Cu / Al

3/8” RTPF*

2 / 17

10.7

1 / direct

1/8 / 825

22

2 / 16 x 25 x 2

1 / 20 x 24 x 1

1 / Direct

1

600---1200

48

1 / Centrifugal

10 x 10

1 / Direct

1

600---1200

48

1 / Centrifugal

10 x 10

1 / Belt

2

1035---1466

56

1 / Centrifugal

10 x 10

Cu / Al

3/8” RTPF*

2 / 17

12.7118055

1 / direct

1/4 / 1100

22

2 / 16 x 25 x 2

1 / 20 x 24 x 1

1 / Direct

1

600---1200

48

1 / Centrifugal

11 x 10

1 / Direct

1

600---1200

48

1 / Centrifugal

11 x 10

1 / Belt

2.9

1208---1639

56

1 / Centrifugal

10 x 10

Cu / Al

3/8” RTPF*

2 / 17

15

1 / direct

1/4 / 1100

22

4 / 16 x 16 x 2

1 / 20 x 24 x 1

N/A

1 / Belt

1.5

878---1192

56

1 / Centrifugal

10 x 10

1 / Belt

2.9

1208---1639

56

1 / Centrifugal

10 x 10

Cu / Al

3/8” RTPF*

2 / 17

21.25

1 / direct

1/4 / 1100

22

4 / 16 x 16 x 2

1 / 20 x 24 x 1

RHS072

1 / 1 / Scroll

16 --- 13 / ---

56 / ---

630 / 505

27 / 44

Cu / Al

3/8” RTPF

4/ 15

7.3

3/4”

48

Physical Data (Cooling)

APPENDIX II. PHYSICAL DATA (cont.)

7.5 -- 8.5 TONS

RHS090

Refrigeration System

# Circuits / # Comp. / Type

R---410A refrig. charge per circuit A/B (lbs---oz)

Oil A/B (oz)

Metering Device

High---pressure Trip / Reset (psig)

Loss of Charge Pressure Trip / Reset (psig)

Evap. Coil

Material

Coil type

Rows / FPI

Total Face Area (ft

2

)

Condensate Drain Conn. Size

Evap. Fan and Motor


Max BHP

RPM Range

Motor Frame Size

Fan Qty / Type


2 / 2 / Scroll

10 --- 3 / 10 --- 3

42 / 42

Fixed Orifice

630 / 505

27 / 44

2 / 2 / Scroll

11 --- 2 / 11 --- 2

42 / 42

630 / 505

27 / 44

Cu / Al

3/8” RTPF

3 / 15

11.1

3/4”

1 / Belt

1.2

460---652

56

1 / Centrifugal

15 x 15

RHS102

Cu / Al

3/8” RTPF

4 / 15

11.1

3/4”

1 / Belt

1.2

460---652

56

1 / Centrifugal

15 x 15

1 / Belt

2.9

838---1084

56

1 / Centrifugal

15 x 15

1 / Belt

2.9

838---1084

56

1 / Centrifugal

15 x 15


Max BHP

RPM Range

Motor Frame Size

Fan Qty / Type


Cond. Coil

Material

Coil type

Rows / FPI

Total Face Area (ft

2

)

Cond. fan / motor

Qty / Motor Drive Type

Motor HP / RPM

Fan diameter (in)

Filters

* RTPF = Round tube plate fin coil design.

RA Filter # / Size (in)

OA inlet screen # / Size (in)

Cu / Al

3/8” RTPF*

2 / 17

25.1

2 / direct

1/4 / 1100

22.0

4 / 16 x 20 x 2

1 / 20 x 24 x 1

Cu / Al

3/8” RTPF*

2 / 17

25.1

2 / direct

1/4 / 1100

22.0

4 / 20 x 20 x 2

1 / 20 x 24 x 1

APPENDIX III. FAN PERFORMANCE

General Fan Performance Notes:

1. Interpolation is permissible. Do not extrapolate.

2. External static pressure is the static pressure difference between the return duct and the supply duct plus the static pressure caused by any FIOPs or accessories.

3. Tabular data accounts for pressure loss due to clean filters, unit casing, and wet coils. Factory options and accessories may add static pressure losses.

4. The Fan Performance tables offer motor/drive recommendations. In cases when two motor/drive combinations would work, we recommended the lower horsepower option.

5. For information on the electrical properties of motors, please see the Electrical information section of this book.

49

APPENDIX III. FAN PERFORMANCE

Table 18 – RHS036, ELECTRIC DRIVE,

X13 MOTOR, 3 TON HORIZONTAL SUPPLY

SPEED

(TORQUE)

TAP

CFM ESP BHP

1

2

3

4

5

1125

1200

1275

1350

1425

1500

900

1275

1350

1425

1500

900

975

1050

1425

1500

900

975

1050

1125

1200

900

975

1050

1125

1200

1275

1350

1500

900

975

1050

1125

1200

1275

975

1050

1125

1200

1275

1350

1425

1350

1425

1500

0.79

0.71

0.61

0.51

0.40

0.29

1.12

0.36

0.27

0.17

0.07

1.02

0.94

0.86

0.03

---

0.85

0.76

0.66

0.55

0.46

0.70

0.60

0.50

0.39

0.29

0.21

0.12

0.46

1.18

1.14

1.10

1.06

1.02

0.98

1.06

1.00

0.95

0.89

0.80

0.70

0.57

0.94

0.90

0.87

0.45

0.45

0.44

0.43

0.41

0.39

0.49

0.32

0.31

0.29

0.27

0.44

0.45

0.45

0.21

---

0.37

0.36

0.36

0.34

0.34

0.31

0.30

0.29

0.27

0.26

0.24

0.23

0.49

0.52

0.54

0.56

0.58

0.60

0.63

0.50

0.52

0.53

0.54

0.53

0.52

0.50

0.65

0.68

0.71


X13 MOTOR, 3 TON VERTICAL SUPPLY

SPEED

(TORQUE)

TAP

CFM ESP BHP

1

2

3

4

5

1125

1200

1275

1350

1425

1500

900

1275

1350

1425

1500

900

975

1050

1425

1500

900

975

1050

1125

1200

900

975

1050

1125

1200

1275

1350

1500

900

975

1050

1125

1200

1275

975

1050

1125

1200

1275

1350

1425

1350

1425

1500

0.57

0.47

0.35

0.26

0.13

0.08

1.04

0.15

0.07

---

---

0.93

0.80

0.68

---

---

0.64

0.53

0.42

0.32

0.24

0.44

0.35

0.24

0.15

0.08

0.02

---

0.22

1.10

1.00

0.90

0.82

0.75

0.70

0.92

0.80

0.71

0.62

0.52

0.43

0.27

0.67

0.60

0.62

0.38

0.37

0.36

0.34

0.33

0.32

0.47

0.25

0.24

---

---

0.42

0.41

0.39

---

---

0.30

0.29

0.28

0.27

0.26

0.22

0.21

0.20

0.19

0.19

0.18

---

0.41

0.50

0.49

0.49

0.50

0.51

0.54

0.46

0.45

0.45

0.45

0.44

0.44

0.42

0.57

0.60

0.64

50



SPEED

(TORQUE)

TAP

CFM ESP BHP

1

2

3

4

5

1500

1600

1700

1800

1900

2000

1200

1700

1800

1900

2000

1200

1300

1400

1900

2000

1200

1300

1400

1500

1600

1200

1300

1400

1500

1600

1700

1800

1200

1300

1400

1500

1600

1700

1800

1900

2000

1300

1400

1500

1600

1700

1800

1900

2000

0.71

0.58

0.45

0.31

0.16

0.03

0.98

0.36

0.21

0.06

---

0.98

0.91

0.82

---

---

0.97

0.88

0.77

0.64

0.50

0.75

0.63

0.48

0.33

0.19

0.05

---

1.02

0.97

0.92

0.87

0.82

0.77

0.71

0.65

0.58

0.92

0.86

0.79

0.70

0.62

0.52

0.37

0.21

0.62

0.61

0.60

0.58

0.56

0.52

0.59

0.54

0.52

0.49

---

0.59

0.60

0.62

---

---

0.58

0.59

0.59

0.59

0.57

0.48

0.46

0.44

0.41

0.39

0.36

---

0.60

0.64

0.67

0.71

0.75

0.79

0.84

0.88

0.92

0.62

0.64

0.66

0.68

0.70

0.71

0.69

0.67

FAN PERFORMANCE



SPEED

(TORQUE)

TAP

CFM ESP BHP

1

2

3

4

5

1500

1600

1700

1800

1900

2000

1200

1700

1800

1900

2000

1200

1300

1400

1900

2000

1200

1300

1400

1500

1600

1200

1300

1400

1500

1600

1700

1800

1200

1300

1400

1500

1600

1700

1800

1900

2000

1300

1400

1500

1600

1700

1800

1900

2000

0.46

0.31

0.20

0.07

---

---

0.89

0.13

0.01

---

---

0.89

0.78

0.59

---

---

0.80

0.69

0.50

0.38

0.24

0.50

0.36

0.19

0.10

0.02

---

---

0.94

0.85

0.73

0.65

0.55

0.47

0.42

0.39

0.38

0.80

0.67

0.57

0.43

0.31

0.23

0.12

0.01

0.58

0.56

0.54

0.52

---

---

0.60

0.48

0.46

---

---

0.59

0.61

0.60

---

---

0.55

0.55

0.54

0.52

0.50

0.39

0.37

0.35

0.33

0.32

---

---

0.62

0.65

0.68

0.70

0.72

0.75

0.78

0.82

0.88

0.63

0.64

0.65

0.65

0.66

0.65

0.63

0.62

51



SPEED

(TORQUE)

TAP

CFM ESP BHP

1

2

3

4

5

1875

2000

2125

2250

2375

2500

1500

2125

2250

2375

2500

1500

1625

1750

2375

2500

1500

1625

1750

1875

2000

1500

1625

1750

1875

2000

2125

2250

1500

1625

1750

1875

2000

2125

2250

2375

2500

1625

1750

1875

2000

2125

2250

2375

2500

0.96

0.74

0.51

0.27

0.02

---

1.44

0.44

0.20

---

---

1.41

1.28

1.13

---

---

1.40

1.25

1.08

0.90

0.67

1.19

1.01

0.82

0.60

0.38

0.16

---

1.49

1.38

1.28

1.18

1.11

0.97

0.72

0.47

0.20

1.35

1.24

1.11

0.90

0.69

0.43

0.17

---

0.88

0.85

0.80

0.75

0.70

---

0.89

0.75

0.71

---

---

0.87

0.89

0.89

---

---

0.86

0.88

0.86

0.84

0.80

0.74

0.73

0.70

0.66

0.62

0.57

---

0.90

0.95

1.00

1.05

1.09

1.11

1.07

1.02

0.96

0.93

0.96

0.98

0.96

0.92

0.86

0.81

---

FAN PERFORMANCE



SPEED

(TORQUE)

TAP

CFM ESP BHP

1

2

3

4

5

1875

2000

2125

2250

2375

2500

1500

2125

2250

2375

2500

1500

1625

1750

2375

2500

1500

1625

1750

1875

2000

1500

1625

1750

1875

2000

2125

2250

1500

1625

1750

1875

2000

2125

2250

2375

2500

1625

1750

1875

2000

2125

2250

2375

2500

0.56

0.35

0.19

0.01

---

---

1.25

0.13

---

---

---

1.19

1.03

0.80

---

---

1.18

1.00

0.75

0.51

0.30

1.00

0.72

0.46

0.28

0.14

0.00

---

1.26

1.16

0.99

0.80

0.67

0.48

0.26

0.11

---

1.09

0.89

0.65

0.45

0.26

0.12

---

---

0.87

0.83

0.80

0.77

---

---

0.89

0.75

---

---

---

0.88

0.91

0.90

---

---

0.88

0.90

0.87

0.83

0.79

0.70

0.65

0.60

0.55

0.51

0.52

---

0.90

0.96

1.01

1.05

1.07

1.07

1.03

1.00

---

0.93

0.96

0.94

0.93

0.89

0.86

---

---

52

APPENDIX III. FAN PERFORMANCE (cont.)

CFM

900

975

1050

1125

1200

1275

1350

1425

1500

RPM

574

597

621

646

671

696

723

749

776

Table 24 – RHS036, 3 TON HORIZONTAL SUPPLY, 3 PHASE BELT DRIVE

0.2

BHP

0.13

0.15

0.18

0.20

0.23

0.26

0.30

0.34

0.38

Med static --- 819 to 1251 rpm, 1.5 max bhp

High static --- 1035 to 1466 rpm, 2.0 max bhp

RPM

707

727

747

768

790

812

835

859

883

AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)

0.4

0.6

0.8

BHP

0.23

0.25

0.28

0.31

0.34

0.38

0.42

0.46

0.51

RPM

817

835

853

872

892

912

933

955

977

BHP

0.34

0.37

0.40

0.43

0.47

0.51

0.55

0.60

0.65

RPM

913

929

946

964

982

1001

1020

1040

1061

BHP

0.47

0.50

0.53

0.57

0.61

0.65

0.70

0.75

0.80

CFM

900

975

1050

1125

1200

1275

1350

1425

1500

RPM

1078

1093

1108

1123

1140

1157

1174

1192

1210

1.2

BHP

0.77

0.80

0.84

0.88

0.92

0.97

1.02

1.08

1.14

RPM

1151

1165

1180

1195

1210

1226

1243

1260

1278


1.4

1.6

1.8

BHP

0.93

0.97

1.01

1.05

1.10

1.15

1.20

1.26

1.33

RPM

1220

1233

1247

1261

1276

1292

1308

1325

1342

BHP

1.11

1.15

1.19

1.23

1.28

1.33

1.39

1.45

1.52

RPM

1284

1297

1311

1325

1339

1354

1370

1386

1403



NOTE: For Medium static applications order high static model and use field---supplied pulley and drives.

Table 25 – RHS036, 3 TON VERTICAL SUPPLY, 3 PHASE BELT DRIVE

CFM 0.2

900

975

1050

1125

1200

1275

1350

1425

RPM

594

618

642

668

695

722

750

778

BHP

0.15

0.17

0.19

0.22

0.25

0.29

0.33

0.37

1500 807 0.42



913

RPM

740

758

777

797

818

841

864

888


0.4

0.6

0.8

BHP

0.25

0.28

0.30

0.34

0.37

0.41

0.46

0.50

0.56

RPM

867

881

896

912

930

949

968

989

1011

BHP

0.37

0.40

0.43

0.47

0.51

0.55

0.60

0.65

0.71

RPM

981

991

1003

1017

1032

1048

1065

1083

1103

BHP

0.52

0.55

0.58

0.62

0.66

0.71

0.76

0.81

0.87

BHP

1.30

1.33

1.38

1.42

1.47

1.53

1.59

1.65

1.72

RPM

999

1015

1030

1047

1064

1082

1100

1119

1138

1.0

BHP

0.61

0.64

0.68

0.72

0.76

0.81

0.86

0.91

0.97

RPM

1346

1358

1371

1385

1399

1414

1429

1444

1461

2.0

BHP

1.49

1.53

1.58

1.62

1.68

1.73

1.80

1.86

1.93

RPM

1084

1092

1102

1113

1126

1140

1155

1171

1188

1.0

BHP

0.68

0.71

0.75

0.79

0.83

0.88

0.93

0.99

1.05

CFM

900

975

1050

1125

1200

1275

1350

1425

1500

RPM

1180

1186

1194

1204

1215

1227

1240

1254

1270

1.2

BHP

0.86

0.89

0.92

0.97

1.01

1.06

1.12

1.18

1.24

RPM

1269

1275

1281

1289

1298

1309

1321

1333

1347


1.4

1.6

1.8

BHP

1.05

1.08

1.12

1.16

1.21

1.26

1.32

1.38

1.45

RPM

1354

1358

1363

1370

1378

1387

1397

1409

1421

BHP

1.25

1.29

1.32

1.37

1.42

1.47

1.53

1.59

1.66

RPM

1434

1437

1441

1447

1454

1462

1471

1481

1492

BHP

1.47

1.51

1.54

1.59

1.64

1.69

1.75

1.82

1.89




Bold Face indicates field---supplied drive

1.Recommend using field---supplied fan pulley (part no. 1178447), motor pulley (part no. 1070551) and belt (part no.1178129).

RPM

1511

1513

1516

1520

1526

1533

1541

---

---

2.0

BHP

1.70

1.74

1.78

1.82

1.87

1.92

1.99

---

---

53

FAN PERFORMANCE (cont.)


CFM 0.2

1200

1300

1400

1500

1600

1700

1800

1900

2000

RPM

671

705

740

776

813

851

888

927

965

BHP

0.23

0.28

0.33

0.38

0.45

0.52

0.60

0.69

0.78



949

984

1019

1054

RPM

790

820

851

883

916


0.4

0.6

0.8

BHP

0.34

0.39

0.45

0.51

0.58

0.66

0.75

0.84

0.94

RPM

892

919

947

977

1007

1038

1069

1102

1135

BHP

0.47

0.52

0.58

0.65

0.73

0.81

0.90

1.00

1.11

RPM

982

1007

1034

1061

1089

1118

1148

1179

1210

BHP

0.61

0.67

0.73

0.80

0.89

0.97

1.07

1.18

1.29

RPM

1064

1088

1113

1138

1165

1192

1221

1250

1280

1.0

BHP

0.76

0.82

0.89

0.97

1.05

1.15

1.25

1.36

1.48

CFM 1.2

1200

1300

1400

1500

1600

1700

1800

RPM

1140

1162

1186

1210

1236

1262

1289

BHP

0.92

0.99

1.06

1.14

1.23

1.33

1.44

1900

2000

1317

1345

1.55

1.68



1380

1408

RPM

1210

1232

1254

1278

1302

1328

1354


1.4

BHP

1.10

1.16

1.24

1.33

1.42

1.52

1.63

1.75

1.88

RPM

1276

1297

1319

1342

1365

1390

1415

1441

1467

1.6

BHP

1.28

1.35

1.43

1.52

1.62

1.72

1.84

1.96

2.10

RPM

1339

1360

1381

1403

1425

1449

1473

1498

1524

1.8

BHP

1.47

1.55

1.63

1.72

1.82

1.93

2.05

2.18

2.32




RPM

1399

1419

1439

1461

1483

1505

1529

---

---


CFM

1200

1300

1400

1500

1600

1700

1800

1900

2000

RPM

695

731

769

807

847

887

928

969

1010

0.2

BHP

0.25

0.30

0.36

0.42

0.49

0.57

0.66

0.76

0.87

RPM



818

849

880

913

948

983

1020

1057

1095


0.4

0.6

0.8

BHP RPM BHP RPM

0.37

0.43

0.49

0.56

0.63

0.72

0.82

0.92

1.04

930

955

982

1011

1042

1073

1106

1140

1175

0.51

0.57

0.63

0.71

0.79

0.88

0.98

1.09

1.21

1032

1053

1077

1103

1130

1158

1188

1219

1251

BHP

0.66

0.72

0.79

0.87

0.96

1.06

1.16

1.28

1.41

RPM

1126

1145

1166

1188

1213

1239

1266

1295

1325

2.0

1.0

BHP

1.68

1.75

1.84

1.93

2.04

2.15

2.27

---

---

BHP

0.83

0.89

0.97

1.05

1.14

1.24

1.35

1.48

1.61

CFM 1.2

1200

1300

1400

1500

1600

1700

RPM

1215

1231

1249

1270

1292

1315

BHP

1.01

1.08

1.16

1.24

1.34

1.44

1800

1900

2000

1341

1367

1395

1.56

1.68

1.82



1412

1437

1463

RPM

1298

1313

1329

1347

1367

1389


1.4

1.6

1.8

BHP

1.21

1.28

1.36

1.45

1.54

1.65

1.77

1.90

2.04

RPM

1378

1390

1405

1421

1440

1459

1481

1504

1528

BHP

1.42

1.49

1.57

1.66

1.76

1.88

2.00

2.13

2.28

RPM

1454

1465

1478

1492

1509

1527

---

---

---

BHP

1.64

1.71

1.79

1.89

1.99

2.11

---

---

---




RPM

1526

1536

---

---

---

---

---

---

---

2.0

BHP

1.87

1.94

---

---

---

---

---

---

---

54



CFM 0.2

1500

1625

1750

1875

2000

2125

2250

2375

2500

RPM

725

765

806

847

889

931

974

1018

1061

BHP

0.33

0.40

0.48

0.57

0.66

0.78

0.90

1.03

1.19



1027

1067

1107

1148

RPM

840

876

912

950

988


0.4

0.6

0.8

BHP

0.46

0.54

0.63

0.72

0.83

0.95

1.08

1.23

1.39

RPM

937

970

1004

1039

1075

1112

1149

1187

1226

BHP

0.60

0.68

0.78

0.88

1.00

1.13

1.27

1.43

1.59

RPM

1023

1054

1087

1120

1154

1189

1224

1261

1297

BHP

0.75

0.84

0.94

1.05

1.18

1.31

1.46

1.63

1.81

CFM 1.2

1500

1625

1750

1875

2000

2125

2250

RPM

1172

1201

1231

1262

1294

1326

1359

BHP

1.06

1.16

1.28

1.41

1.55

1.70

1.87

2375

2500

1393

1427

2.05

2.24



1453

1487

RPM

1239

1267

1296

1326

1357

1388

1420


1.4

BHP

1.23

1.34

1.46

1.60

1.74

1.90

2.08

2.27

2.47

RPM

1302

1329

1358

1387

1417

1447

1479

1511

1543

1.6

BHP

1.40

1.52

1.65

1.79

1.95

2.11

2.29

2.49

2.70

RPM

1361

1388

1416

1445

1474

1504

1534

1566

1597


1.8


CFM 0.2

1500

1625

1750

1875

2000

2125

2250

2375

2500

RPM

794

840

888

936

984

1033

1083

1133

1183

BHP

0.41

0.49

0.59

0.70

0.82

0.96

1.11

1.28

1.47



1124

1170

1217

1265

RPM

902

945

988

1033

1078


0.4

0.6

0.8

BHP

0.55

0.64

0.75

0.87

1.00

1.15

1.32

1.50

1.70

RPM

993

1034

1075

1117

1160

1204

1248

1293

1339

BHP

0.69

0.80

0.92

1.05

1.19

1.35

1.53

1.72

1.93

RPM

1074

1113

1153

1193

1235

1277

1319

1363

1406

BHP

0.85

0.96

1.09

1.23

1.39

1.56

1.74

1.95

2.17

BHP

1.58

1.71

1.84

1.99

2.15

2.33

2.51

2.72

2.94

CFM 1.2

1500

1625

1750

1875

2000

2125

2250

2375

RPM

1214

1251

1289

1327

1366

1406

1446

1487

BHP

1.16

1.30

1.44

1.60

1.78

1.97

2.18

2.40

2500 1529 2.64



1585

RPM

1277

1313

1350

1387

1426

1464

1504

1544


1.4

BHP

1.33

1.47

1.63

1.80

1.98

2.18

2.40

2.63

2.89

RPM

1336

1371

1407

1444

1482

1520

1559

1598

1638

1.6

BHP

1.50

1.65

1.81

1.99

2.19

2.40

2.62

2.87

3.13

RPM

1392

1427

1462

1498

1535

1573

1611

1650

---


1.8

BHP

1.67

1.83

2.01

2.19

2.40

2.62

2.85

3.11

---

RPM

1101

1131

1162

1194

1226

1260

1294

1329

1364

1.0

BHP

0.90

1.00

1.11

1.23

1.36

1.50

1.66

1.84

2.02

RPM

1418

1444

1472

1499

1528

1557

1587

1618

1649

2.0

BHP

1.77

1.90

2.04

2.20

2.36

2.55

2.74

2.95

3.18

RPM

1147

1185

1223

1263

1303

1343

1385

1427

1470

1.0

BHP

1.00

1.13

1.26

1.41

1.58

1.76

1.96

2.17

2.41

RPM

1445

1479

1514

1550

1586

1623

1661

---

---

2.0

BHP

1.85

2.02

2.20

2.40

2.61

2.84

3.09

---

---

55

CFM 0.2

1800

1950

2100

2250

2400

2550

2700

2850

3000

RPM

822

872

923

974

1026

1079

1132

1186

1240

BHP

0.51

0.62

0.75

0.90

1.06

1.25

1.46

1.69

1.94

Std static --- 878 to 1192 rpm, 1.5 max bhp



RPM

927

973

1019

1067

1115

1164

1214

1264

1315


Table 30 – RHS072, 6 TON HORIZONTAL SUPPLY


0.4

0.6

0.8

BHP

0.66

0.79

0.92

1.08

1.26

1.46

1.67

1.92

2.18

RPM

1018

1061

1104

1149

1195

1241

1289

1336

1385

BHP

0.82

0.95

1.10

1.27

1.46

1.67

1.90

2.15

2.43

RPM

1100

1140

1182

1224

1268

1312

1358

1404

1451

BHP

0.98

1.13

1.29

1.46

1.66

1.88

2.12

2.39

2.68

CFM 1.2

1800

1950

RPM

1244

1281

BHP

1.33

1.49

2100

2250

2400

2550

1320

1359

1400

1441

1.67

1.87

2.09

2.33

2700

2850

1483

1527

2.59

2.87

3000 1571 3.18




RPM

1308

1345

1382

1420

1460

1500

1541

1583

1626


1.4

1.6

1.8

BHP

1.51

1.68

1.87

2.08

2.31

2.55

2.83

3.12

3.44

RPM

1369

1405

1441

1479

1517

1557

1597

1638

1680

BHP

1.70

1.88

2.08

2.29

2.53

2.79

3.07

3.37

3.70

RPM

1427

1462

1498

1534

1572

1610

1650

---

---


Table 31 – RHS072, 6 TON VERTICAL SUPPLY

CFM 0.2

1800

1950

2100

2250

2400

2550

2700

2850

3000

RPM

907

965

1024

1083

1143

1203

1264

1326

1387

BHP

0.63

0.77

0.93

1.11

1.32

1.55

1.81

2.09

2.41




RPM

1006

1060

1115

1170

1227

1284

1342

1400

1459


0.4

0.6

0.8

BHP

0.80

0.95

1.12

1.32

1.54

1.78

2.06

2.36

2.69

RPM

1092

1143

1195

1248

1302

1357

1412

1469

1525

BHP

0.97

1.13

1.32

1.53

1.76

2.02

2.31

2.62

2.97

RPM

1169

1218

1268

1319

1371

1424

1478

1532

1587

BHP

1.90

2.09

2.29

2.51

2.76

3.03

3.32

---

---

BHP

1.14

1.32

1.52

1.74

1.99

2.26

2.56

2.89

3.25

CFM

1800

1950

2100

2250

2400

2550

2700

2850

3000

RPM

1304

1350

1398

1446

1496

1546

1597

1648

---

1.2

BHP

1.51

1.71

1.93

2.18

2.45

2.75

3.07

3.43

---

RPM

1365

1410

1457

1504

1552

1601

1651

---

---


1.4

1.6

1.8

BHP

1.69

1.91

2.14

2.40

2.68

2.99

3.33

---

---

RPM

1422

1467

1512

1559

1606

1654

---

---

---

BHP

1.88

2.11

2.35

2.62

2.92

3.24

---

---

---

RPM

1477

1520

1565

1611

1658

---

---

---

---





BHP

2.08

2.31

2.57

2.85

3.16

---

---

---

---

RPM

1174

1213

1253

1294

1336

1379

1422

1467

1512

1.0

BHP

1.15

1.31

1.48

1.66

1.87

2.10

2.35

2.63

2.93

RPM

1483

1517

1552

1587

1624

1662

---

---

---

2.0

BHP

2.10

2.30

2.51

2.74

2.99

3.27

---

---

---

RPM

1239

1287

1335

1385

1435

1487

1539

1592

1646

1.0

BHP

1.32

1.51

1.72

1.96

2.22

2.50

2.82

3.16

3.53

RPM

1528

1572

1616

1661

---

---

---

---

---

2.0

BHP

2.28

2.52

2.79

3.09

---

---

---

---

---

56


CFM 0.2

2250

2438

2625

2813

3000

3188

3375

3563

3750

RPM

423

444

465

487

510

534

557

582

606

BHP

0.28

0.34

0.40

0.47

0.55

0.65

0.75

0.86

0.99




RPM

509

525

543

561

580

600

621

642

664

Table 32 – RHS090, 7.5 TON HORIZONTAL SUPPLY


0.4

0.6

0.8

BHP

0.40

0.46

0.53

0.61

0.70

0.80

0.91

1.03

1.17

RPM

587

600

614

629

646

663

681

700

720

BHP

0.52

0.59

0.67

0.76

0.86

0.96

1.08

1.21

1.35

RPM

659

669

680

693

707

722

738

755

773

BHP

0.66

0.73

0.82

0.91

1.02

1.13

1.26

1.39

1.54

CFM 1.2

2250

2438

2625

2813

3000

3188

RPM

788

794

802

811

821

832

BHP

0.94

1.03

1.13

1.24

1.36

1.49

3375

3563

3750

845

858

873

1.63

1.78

1.94




RPM

847

852

858

865

874

884

895

907

920


1.4

1.6

1.8

BHP RPM BHP RPM

1.09

1.19

1.30

1.41

1.54

1.68

1.82

1.98

2.15

903

907

911

917

925

933

943

954

966

1.25

1.36

1.47

1.59

1.72

1.87

2.02

2.19

2.36

957

959

963

967

974

981

990

1000

1011


Table 33 – RHS090, 3 PHASE, 7.5 TON VERTICAL SUPPLY

CFM 0.2

2250

2438

2625

2813

3000

3188

3375

RPM

447

470

494

518

543

568

593

BHP

0.31

0.37

0.45

0.53

0.62

0.72

0.84

3563

3750

619

645

0.97

1.11




RPM

528

548

569

590

612

635

658

681

705


0.4

0.6

0.8

BHP

0.43

0.50

0.58

0.67

0.77

0.89

1.01

1.15

1.30

RPM

597

615

634

653

673

694

716

737

760

BHP

0.54

0.62

0.71

0.82

0.93

1.05

1.19

1.33

1.49

RPM

658

675

692

710

729

749

769

789

810

BHP

1.41

1.52

1.64

1.77

1.91

2.06

2.22

2.40

2.58

BHP

0.66

0.75

0.85

0.96

1.08

1.21

1.36

1.52

1.68

CFM

2250

2438

2625

2813

3000

3188

3375

3563

3750

RPM

764

779

795

811

828

846

864

882

902

1.2

BHP

0.89

1.00

1.12

1.25

1.39

1.54

1.70

1.88

2.07

RPM

812

826

841

857

873

890

907

925

944


1.4

1.6

1.8

BHP

1.02

1.13

1.26

1.40

1.55

1.71

1.88

2.06

2.26

RPM

856

870

885

900

916

932

949

966

984

BHP

1.14

1.26

1.40

1.55

1.70

1.87

2.05

2.25

2.45

RPM

899

912

926

941

956

972

988

1005

1022





BHP

1.26

1.40

1.54

1.69

1.86

2.04

2.23

2.43

2.65

RPM

725

733

743

753

765

779

793

808

824

1.0

BHP

0.80

0.88

0.97

1.08

1.19

1.31

1.44

1.58

1.74

RPM

1009

1010

1012

1016

1021

1028

1035

1044

1054

2.0

BHP

1.58

1.70

1.82

1.96

2.11

2.26

2.43

2.61

2.80

RPM

713

729

745

763

780

799

818

837

857

1.0

BHP

0.78

0.88

0.99

1.11

1.24

1.38

1.53

1.70

1.88

RPM

939

952

966

980

995

1010

1026

1042

1059

2.0

BHP

1.39

1.53

1.68

1.84

2.02

2.21

2.40

2.62

2.84

57


CFM 0.2

2550

2763

2975

3188

3400

3613

3825

4038

4250

RPM

468

493

520

547

575

603

631

660

689

BHP

0.39

0.47

0.57

0.68

0.80

0.94

1.09

1.26

1.45




Table 34 – RHS102, 8.5 TON HORIZONTAL SUPPLY

RPM

546

567

589

613

637

662

688

714

741


0.4

0.6

0.8

BHP

0.52

0.61

0.72

0.83

0.96

1.11

1.27

1.45

1.65

RPM

618

635

654

675

696

719

742

766

790

BHP

0.66

0.76

0.87

1.00

1.14

1.29

1.46

1.65

1.86

RPM

684

699

716

733

752

773

794

816

838

BHP

0.80

0.91

1.03

1.17

1.31

1.48

1.66

1.85

2.07

CFM

2550

2763

2975

3188

3400

3613

3825

4038

4250

RPM

806

817

829

843

858

874

891

910

930

1.2

BHP

1.11

1.24

1.37

1.53

1.69

1.87

2.07

2.28

2.51

RPM

863

871

882

894

907

922

938

955

973


1.4

1.6

1.8

BHP

1.28

1.41

1.55

1.71

1.88

2.07

2.28

2.50

2.74

RPM

916

924

932

943

955

968

983

999

1015

BHP

1.45

1.59

1.74

1.90

2.09

2.28

2.49

2.72

2.97

RPM

968

974

981

990

1001

1013

1027

1041

1057





Table 35 – RHS102, 8.5 TON VERTICAL SUPPLY

CFM 0.2

2550

2763

2975

3188

3400

3613

3825

RPM

495

524

552

582

611

641

672

BHP

0.43

0.53

0.63

0.76

0.89

1.05

1.22

4038

4250

702

733

1.41

1.62




RPM

570

595

620

647

674

701

729

758

787


0.4

0.6

0.8

BHP

0.56

0.67

0.79

0.92

1.07

1.23

1.42

1.62

1.84

RPM

634

657

681

705

730

756

782

809

836

BHP

0.70

0.81

0.94

1.08

1.24

1.42

1.61

1.83

2.06

RPM

693

714

736

759

782

806

831

857

883

BHP

1.62

1.77

1.93

2.10

2.29

2.49

2.71

2.95

3.21

BHP

0.83

0.95

1.09

1.25

1.42

1.60

1.81

2.03

2.28

CFM

2550

2763

2975

3188

3400

3613

3825

4038

4250

RPM

795

814

834

855

876

898

921

944

968

1.2

BHP

1.09

1.24

1.40

1.57

1.76

1.97

2.20

2.45

2.71

RPM

841

859

878

898

919

940

962

984

1007


1.4

1.6

1.8

BHP

1.23

1.38

1.55

1.74

1.94

2.16

2.40

2.65

2.93

RPM

885

902

921

940

960

980

1001

1023

1045

BHP

1.36

1.53

1.71

1.90

2.12

2.34

2.59

2.86

3.15

RPM

926

943

961

979

998

1018

1039

1060

1081





BHP

1.50

1.68

1.86

2.07

2.29

2.53

2.79

3.07

3.36

58

RPM

747

760

774

789

806

824

843

864

885

1.0

BHP

0.96

1.07

1.20

1.34

1.50

1.67

1.86

2.06

2.29

RPM

1018

1022

1028

1036

1046

1057

1069

1083

1097

2.0

BHP

1.80

1.95

2.12

2.30

2.50

2.71

2.94

3.19

3.45

RPM

746

766

787

808

831

854

877

901

926

1.0

BHP

0.96

1.09

1.24

1.41

1.59

1.79

2.00

2.24

2.49

RPM

965

982

999

1017

1036

1055

1075

1096

1117

2.0

BHP

1.64

1.82

2.02

2.24

2.47

2.72

2.99

3.27

3.58

APPENDIX III. FAN PERFORMANCE (cont.)

UNIT

RHS

036

048

060

072

090

102

PHASE

3

3

3

3

3

3

MOTOR/DRIVE

COMBO

Medium Static*

High Static

Medium Static*

High Static

Medium Static*

High Static

Standard Static

Medium Static*

High Static

Standard Static

Medium Static*

High Static

Standard Static

Medium Static*

High Static

Table 36 – PULLEY ADJUSTMENT

0 0.5

1

MOTOR PULLEY TURNS OPEN

1.5

2 2.5

3

1251 1208 1165 1121 1078 1035 992

3.5

949

4

905

4.5

862

5

819

1466 1423 1380 1337 1294 1251 1207 1164 1121 1078 1035

1303 1265 1226 1188 1150 1112 1073 1035 997 958 920

1466 1423 1380 1337 1294 1251 1207 1164 1121 1078 1035

1380 1349 1317 1286 1254 1223 1192 1160 1129 1097 1066

1639 1596 1553 1510 1467 1424 1380 1337 1294 1251 1208

1192 1161 1129 1098 1066 1035 1004 972 941 909 878

1380 1349 1317 1286 1254 1223 1192 1160 1129 1097 1066

1639 1596 1553 1510 1467 1424 1380 1337 1294 1251 1208

652 633 614 594 575 556 537 518 498 479 460

838 813 789 764 739

1084 1059 1035 1010 986

715

961

690

936

665

912

640

887

616

863

591

838

652

838

633

813

614

789

594

764

575

739

1084 1059 1035 1010 986

556

715

961

537

690

936

518

665

912

498

640

887

479

616

863

460

591

838

NOTE: Do not adjust pulley further than 5 turns open.

--- Factory settings

* Available with the high static fan motor option and field supplied drives available from FAST

59

APPENDIX IV. ELECTRICAL INFORMATION

Table 37 – RHS036, 3 TONS........1--Stage Cooling

VOLTAGE

RANGE COMP (ea) OFM (ea)

V--Ph--Hz MIN MAX RLA LRA WATTS FLA

208--1--60 187 253 17.9

112 190 0.9

230--1--60 187 253 17.9

112 190 0.9

208--3--60 187 253 13.2

230--3--60 187 253 13.2

460--3--60 414 506

575--3--60 518 633

6.0

NA

88

88

44

NA

190

190

190

190

0.9

0.9

0.5

0.4

TYPE

DD--STD

DD--STD

DD--STD

HIGH

DD--STD

HIGH

DD--STD

HIGH

DD--STD

HIGH

Max

WATTS

980

980

980

2000

980

2000

980

2000

980

2000


IFM

Max

AMP Draw EFF at Full Load

7.8

7.8

7.8

5.5

7.8

84%

84%

84%

80%

84%

5.5

8.0

2.7

4.2

2.1

80%

84%

80%

84%

80%

VOLTAGE

RANGE

COMP (ea) OFM (ea)

V--Ph--Hz

MIN MAX

RLA LRA

208--1--60 187 253 21.8

117

WATTS

325

FLA

1.5

230--1--60 187 253 21.8

117 325 1.5

208--3--60 187 253 13.7

230--3--60 187 253 13.7

460--3--60 414 506

575--3--60 518 633

6.2

4.8

83

83

41

37

325

325

325

325

1.5

1.5

0.8

0.6

TYPE

DD---STD

DD---STD

DD---STD

HIGH

DD---STD

HIGH

DD---STD

HIGH

DD---STD

HIGH

Max

WATTS

980

980

980

2000

980

2000

980

2000

980

2000


IFM

Max

AMP Draw

EFF at Full Load

7.8

84%

5.5

8.0

2.7

4.2

7.8

7.8

5.5

7.8

2.1

84%

84%

80%

84%

80%

84%

80%

84%

80%

VOLTAGE

RANGE

COMP (ea) OFM (ea)

V--Ph--Hz MIN MAX RLA LRA WATTS FLA

208--1--60 187 253 26.2

134 325 1.5

230--1--60 187 253 26.2

134 325 1.5

208--3--60 187 253 15.6

110

230--3--60 187 253 15.6

110

460--3--60 414 506

575--3--60 518 633

7.7

5.8

52

39

325

325

325

325

1.5

1.5

0.8

0.6

TYPE

DD--STD

DD--STD

DD--STD

HIGH

DD--STD

HIGH

DD--STD

HIGH

DD--STD

HIGH

Max

WATTS

980

980

980

2770

980

2770

980

2770

980

2770

IFM

Max


7.8

7.8

7.8

84%

84%

84%

7.9

7.8

7.9

8.0

3.6

4.2

2.9

81%

84%

81%

84%

81%

84%

81%

5.2

7.6

2.6

4.0

2.0

FLA

7.4

7.4

7.4

5.2

7.4

5.2

7.6

2.6

4.0

2.0

FLA

7.4

7.4

7.4

5.2

7.4

FLA

7.4

7.4

7.4

7.5

7.4

7.5

7.6

3.4

4.0

2.8

60

V--Ph--Hz

VOLTAGE

RANGE

MIN MAX RLA LRA WATTS FLA

208--3--60 187 253 19.0

123

230--3--60 187 253 19.0

123

460--3--60 414 506

575--3--60 518 633

COMP (ea)

9.7

7.4

62

50

APPENDIX IV. ELECTRICAL INFORMATION

ELECTRICAL INFORMATION (cont.)


OFM (ea)

325

325

325

325

1.5

1.5

0.8

0.6

TYPE

STD

HIGH

STD

HIGH

STD

HIGH

STD

HIGH

Max

WATTS

1600

2770

1600

2770

1600

2770

1600

2770

IFM

Max


5.5

7.9

5.5

80%

81%

80%

7.9

2.7

3.6

2.5

2.9

81%

80%

81%

80%

81%

V--Ph--Hz

208--3--60

230--3--60

460--3--60

575--3--60

VOLTAGE

RANGE

MIN

187

MAX

253

187

414

518

253

506

633

Table 41 – RHS090, 7.5 TONS........2--Stage Cooling

COMP (Cir 1) COMP (Cir 2) OFM (ea)

RLA

13.1

13.1

6.1

4.4

LRA

83

83

41

33

RLA

13.1

13.1

6.1

4.4

LRA WATTS FLA

83 325 1.5

83

41

33

325

325

325

1.5

0.8

0.6

TYPE

STD

HIGH

STD

HIGH

STD

HIGH

STD

HIGH

Max

WATTS

1310

2770

1310

2770

1310

2770

1310

2770

IFM

Max

AMP

Draw

5.5

7.9

5.5

7.9

2.7

3.6

2.5

2.9

EFF at

Full

Load

80%

81%

80%

81%

80%

81%

80%

81%

FLA

5.2

7.5

5.2

7.5

2.6

3.4

2.4

2.8

FLA

5.2

7.5

5.2

7.5

2.6

3.4

2.4

2.8

V--Ph--Hz

208--3--60

230--3--60

460--3--60

575--3--60

VOLTAGE

RANGE

MIN

187

MAX

253

187

414

518

253

506

633

Table 42 – RHS102, 8.5 TONS........2--Stage Cooling

COMP (Cir 1) COMP (Cir 2) OFM (ea)

RLA

16.0

16.0

7.0

5.6

LRA

91

91

46

37

RLA

13.7

13.7

6.2

4.8

LRA WATTS FLA

83 325 1.5

83

41

37

325

325

325

1.5

0.8

0.6

TYPE

STD

HIGH

STD

HIGH

STD

HIGH

STD

HIGH

Max

WATTS

1310

2770

1310

2770

1310

2770

1310

2770

IFM

Max

AMP

Draw

5.5

7.9

5.5

7.9

2.7

3.6

2.5

2.9

EFF at

Full

Load

80%

80%

80%

80%

80%

80%

80%

81%

FLA

5.2

7.5

5.2

7.5

2.6

3.4

2.4

2.8

61

APPENDIX IV. ELECTRICAL INFORMATION (cont.)

Unit

RHS

036

V---Ph---Hz*

208/230---3---60

460---3---60

575---3---60

Table 43 – MCA/MOCP DETERMINATION NO C.O. OR UNPWRD C.O.

IFM

TYPE

208/230---1---60 DD---STD

DD---STD

MED**

HIGH

DD---STD

MED**

HIGH

DD---STD

MED**

HIGH

ELEC. HTR

Nom

(kW)

---

3.3/4.4

4.9/6.5

6.5/8.7

FLA

---

15.9/18.3

23.5/27.1

31.4/36.3

7.9/10.5

37.9/43.8

9.8/13.0

46.9/54.2

---

3.3/4.4

4.9/6.5

6.5/8.7

---

9.2/10.6

13.6/15.6

18.1/20.9

7.9/10.5

21.9/25.3

12.0/16.0 33.4/38.5

---

3.3/4.4

4.9/6.5

6.5/8.7

---

9.2/10.6

13.6/15.6

18.1/20.9

7.9/10.5

21.9/25.3

---

6.0

8.8

11.5

14.0

---

6.0

8.8

11.5

14.0

---

---

---

12.0/16.0 33.4/38.5

---

3.3/4.4

4.9/6.5

6.5/8.7

---

9.2/10.6

13.6/15.6

18.1/20.9

7.9/10.5

21.9/25.3

12.0/16.0 33.4/38.5

---

6.0

8.8

11.5

14.0

---

7.2

---

7.2

10.6

13.8

16.8

---

---

---

10.6

13.8

16.8

---

7.2

10.6

13.8

16.8

45.2/48.7

50.0/54.2

64.4/70.7

22.6

34.1/35.9

39.6/42.1

45.2/48.7

50.0/54.2

64.4/70.7

16.0

25.0

29.3

33.3

37.0

10.6

19.6

MCA

30.7

50.6/53.6

60.1/64.6

69.9/76.1

78.1/85.4

89.3/98.4

24.8

36.3/38.1

41.8/44.3

47.4/50.9

52.2/56.4

66.6/72.9

22.6

34.1/35.9

39.6/42.1

23.9

27.9

31.6

10.6

19.6

23.9

27.9

31.6

5.4

3.4

2.9

70/80

20

30

30

35

40

15

20

50/50

50/60

70/80

30

45/45

45/50

50/50

50/60

45/45

50/50

50/60

60/60

70/80

30

45/45

45/50

MOCP

45

60/60

70/70

70/80

80/90

90/100

30

20

25

30

35

25

30

35

15

15

15

15

WITHOUT C.O. or UNPWR C.O.

WITHOUT P.E.

WITH P.E.

DISC. SIZE DISC. SIZE

FLA

30

LRA

121

MCA

32.6

48/51 137/139 52.5/55.5

57/61 145/148 62.0/66.5

MOCP

50

60/60

70/70

FLA

32

LRA

123

51/53 139/141

59/63 147/150

66/72 152/157 71.8/78.0

74/81 159/165 80.0/87.3

80/80

80/90

68/74 154/159

76/83 161/167

84/92 215/229 91.2/100.3 100/110 86/95 217/231

25 97 26.7

35/37 106/108 38.2/40.0

40/43 111/113 43.7/46.2

46/49 115/118 49.3/52.8

50/54 119/122 54.1/58.3

63/69 130/136 68.5/74.8

22 109 24.5

33/34 118/120 36.0/37.8

38/40 123/125 41.5/44.0

43/46 127/130 47.1/50.6

47/51 131/134 51.9/56.1

61/66 142/148 66.3/72.6

22 120 24.5

33/34 129/131 36.0/37.8

38/40 134/136 41.5/44.0

43/46 138/141 47.1/50.6

47/51 142/145 51.9/56.1

61/66 153/159 66.3/72.6

16

24

30

5

3

3

10

19

23

26

19

23

26

30

28

32

36

10

53

60

64

67

70

54

61

65

68

71

60

67

71

74

77

5

8

12

17.0

26.0

30.3

34.3

38.0

11.6

20.6

24.9

28.9

32.6

11.6

20.6

24.9

28.9

32.6

7.4

5.4

4.9

15

25

25

30

25

25

30

35

60/60

70/80

20

30

35

35

40

15

35

15

15

15

50/50

50/60

60/60

70/80

30

45/45

50/50

50/60

30

45/50

50/50

50/60

60/60

70/80

30

45/45

31

7

5

5

12

20

24

27

27 99

37/39 108/110

43/45 113/115

48/51 117/120

52/56 121/124

65/71 132/138

24 111

35/37 120/122

40/42 125/127

45/48 129/132

50/53 133/136

63/69 144/150

24 122

35/37 131/133

40/42 136/138

45/48 140/143

20

24

27

31

30

33

37

12

50/53 144/147

63/69 155/161

17

26

54

61

65

68

72

75

78

7

10

14

69

72

61

68

71

55

62

66

*Nominal valves, listed as 208/240V, 480V or 600V as appropriate.

** Field supplied belts and pulleys required to achieve medium static.

See Legend and calculations on page 75.

62


Table 45 (cont.) MCA/MOCP DETERMINATION NO C.O. OR UNPWRD C.O.

UNIT

RHS

048

V---Ph---Hz

IFM

TYPE

208/230---1---60 DD---STD

208/230---3---60

460---3---60

DD---STD

MED**

HIGH

DD---STD

MED**

HIGH

ELEC. HTR WITHOUT C.O. or UNPWR C.O.

WITHOUT P.E.

WITH P.E.

Nom

(kW)

---

3.3/4.4

6.5/8.7

FLA

---

15.9/18.3

31.4/36.3

MCA

36.2

56.0/59.0

75.4/81.5

MOCP

50

60/60

80/90

DISC. SIZE

FLA

35

LRA

128

MCA

38.1

54/56 144/146 57.9/60.9

71/77 159/164 77.3/83.4

MOCP

50

60/70

80/90

DISC. SIZE

FLA

37

56/59

LRA

130

146/148

74/79 161/166

9.8/13.0

46.9/54.2

94.8/103.9 100/110 89/98 222/236 96.7/105.8 100/110 91/100 224/238

13.1/17.4

62.8/72.5 114.7/126.8 125/150 108/119 254/273 116.6/128.7 125/150 110/121 256/275

15.8/21.0

75.8/87.5 130.9/145.5 150/150 122/136 280/303 132.8/147.4 150/150 125/138 282/305

----26.0

30 26 94 27.9

40 28 96

4.9/6.5

6.5/8.7

13.6/15.6

18.1/20.9

12.0/16.0

33.4/38.5

15.8/21.0

43.8/50.5

43.0/45.5

48.7/52.2

67.8/74.2

80.8/89.2

50/50

50/60

70/80

90/90

42/44

47/50

64/70

76/84

108/110

112/115

127/133

182/195

44.9/47.4

50.6/54.1

69.7/76.1

82.7/91.1

50/50

60/60

70/80

90/100

44/46

49/52

67/72

79/86

110/112

114/117

129/135

184/197

---

4.9/6.5

---

13.6/15.6

6.5/8.7

18.1/20.9

12.0/16.0

33.4/38.5

15.8/21.0

43.8/50.5

---

4.9/6.5

---

13.6/15.6

23.8

40.8/43.3

46.5/50.0

65.6/72.0

78.6/87.0

23.8

40.8/43.3

30

50/50

50/50

70/80

80/90

30

50/50

23

39/41

44/47

62/68

74/82

23

106

120/122

124/127

139/145

194/207

117

25.7

42.7/45.2

48.4/51.9

67.5/73.9

80.5/88.9

25.7

39/41 131/133 42.7/45.2

30

50/50

50/60

70/80

90/90

30

50/50

26

41/44

46/50

64/70

76/84

26

108

122/124

126/129

141/147

196/209

119

41/44 133/135

6.5/8.7

18.1/20.9

12.0/16.0

33.4/38.5

15.8/21.0

43.8/50.5

-----

6.0

11.5

14.0

23.0

---

6.0

11.5

14.0

23.0

---

6.0

11.5

14.0

23.0

7.2

13.8

16.8

27.7

---

7.2

13.8

16.8

27.7

---

7.2

13.8

16.8

27.7

46.5/50.0

65.6/72.0

78.6/87.0

16.5

25.5

33.8

575---3---60

DD---STD

MED**

---

---

---

---

10.6

9.0

HIGH ----8.6




45.8

11.2

20.2

28.4

32.2

45.8

37.5

51.1

11.2

20.2

28.4

32.2

15

15

15

50

15

25

30

35

50

40

60

15

25

30

35

50/50

70/80

80/90

20

30

35

43

11

19

27

30

43

36

49

11

19

27

30

44/47 135/138 48.4/51.9

62/68 150/156 67.5/73.9

74/82 205/218 80.5/88.9

17 51 17.5

25

33

58

65

26.5

34.8

11

9

9

68

106

52

59

66

69

107

58

65

72

75

113

43

46

50

38.5

52.1

12.2

21.2

29.4

33.2

46.8

12.2

21.2

29.4

33.2

46.8

12.5

10.9

10.5

50/60

70/80

90/90

25

30

35

40

60

15

25

30

35

50

15

25

30

35

50

15

15

15

13

11

11

44

12

20

28

32

44

37

50

12

20

28

32

46/50 137/140

64/70 152/158

76/84 207/220

18 52

26

34

59

66

69

107

53

60

67

70

108

59

66

73

76

114

45

48

52

63



UNIT

RHS

V---Ph---Hz*

IFM

TYPE

208/230---1---60 DD---STD

208/230---3---60

DD---STD

MED**


WITHOUT P.E.

WITH P.E.

Nom

(kW)

---

4.9/6.5

6.5/8.7

FLA

---

23.5/27.1

31.4/36.3

MCA

41.7

71.0/75.5

80.9/87.0

MOCP

60

80/80

90/100

DISC. SIZE

FLA

40

67/72

LRA

145

169/172

MCA

43.6

72.9/77.4

MOCP

60

80/80

DISC. SIZE

FLA

43

70/74

LRA

147

171/174

76/82 176/181 82.8/88.9

100/100 79/84 178/183

9.8/13.0

46.9/54.2 100.3/109.4 110/110 94/103 239/253 102.2/111.3 110/125 96/105 241/255

13.1/17.4

62.8/72.5 120.2/132.3 125/150 113/124 271/290 122.1/134.2 125/150 115/126 273/292

15.8/21.0

75.8/87.5 136.4/151.0 150/175 128/141 297/320 138.3/152.9 150/175 130/143 299/322

----28.4

40 28 121 30.3

45 30 123

4.9/6.5

13.6/15.6

7.9/10.5

21.9/25.3

12.0/16.0

33.4/38.5

15.8/21.0

43.8/50.5

45.4/47.9

55.8/60.0

70.2/76.5

83.2/91.5

50/50

60/70

80/80

90/100

44/46

53/57

67/72

79/86

135/137

143/146

154/160

209/222

47.3/49.8

57.7/61.9

72.1/78.4

85.1/93.4

50/60

60/70

80/80

90/100

46/48

56/59

69/75

81/88

137/139

145/148

156/162

211/224

19.9/26.5

55.2/63.8

97.4/108.2 100/110 92/102 231/249 99.3/110.1 100/125 94/104 233/251

----26.2

40 26 144 28.1

40 28 146

4.9/6.5

13.6/15.6

7.9/10.5

21.9/25.3

43.2/45.7

53.6/57.8

50/50

60/60

41/44

51/55

158/160

166/169

45.1/47.6

55.5/59.7

50/50

60/60

43/46

53/57

160/162

168/171

12.0/16.0

33.4/38.5

68.0/74.3

70/80 64/70 177/183 69.9/76.2

70/80 66/72 179/185

15.8/21.0

43.8/50.5

81.0/89.3

90/90 76/84 232/245 82.9/91.2

90/100 78/86 234/247

19.9/26.5

55.2/63.8

95.2/106.0 100/110 89/99 254/272 97.1/107.9 100/110 91/101 256/274

060

HIGH

DD---STD

---

4.9/6.5

---

13.6/15.6

7.9/10.5

21.9/25.3

12.0/16.0

33.4/38.5

28.5

45.5/48.0

55.9/60.1

70.3/76.6

40

50/50

60/70

80/80

28

44/46

53/57

67/73

170

184/186

192/195

203/209

30.4

47.4/49.9

57.8/62.0

72.2/78.5

45

50/60

60/70

80/80

30

46/48

56/60

69/75

172

186/188

194/197

205/211

15.8/21.0

43.8/50.5

83.3/91.6

90/100 79/86 258/271 85.2/93.5

90/100 81/89 260/273

19.9/26.5

55.2/63.8

97.5/108.3 100/110 92/102 280/298 99.4/110.2 100/125 94/104 282/300

---

6.0

11.5

14.0

23.0

25.5

---

7.2

13.8

16.8

27.7

30.7

18.0

27.0

35.3

39.0

52.7

56.4

25

30

40

40

60

60

19

27

34

38

50

54

62

69

76

79

117

123

19.0

28.0

36.3

40.0

53.7

57.4

25

30

40

45

60

60

20

28

36

39

52

55

63

70

77

80

118

124

460---3---60 MED**

HIGH

---

6.0

11.5

14.0

23.0

25.5

---

6.0

11.5

14.0

---

7.2

13.8

16.8

27.7

30.7

---

7.2

13.8

16.8

13.8

22.8

31.1

34.8

575---3---60

DD---STD

MED**

HIGH

23.0

25.5

---

---

---

27.7

30.7

---

---

---

48.5

52.2

11.9

9.9

10.7




13.0

22.0

30.3

34.0

47.7

51.4

20

25

35

35

50

60

20

25

35

35

50

60

15

15

15

13

21

29

32

45

48

14

22

30

33

46

49

12

10

11

69

76

83

86

124

130

82

89

96

99

137

143

45

52

63

14.0

23.0

31.3

35.0

48.7

52.4

14.8

23.8

32.1

35.8

49.5

53.2

13.8

11.8

12.6

20

25

35

40

50

60

20

25

35

40

50

60

20

15

15

14

22

30

33

46

49

15

23

31

34

47

50

14

12

13

138

144

47

54

65

70

77

84

87

125

131

83

90

97

100

64




UNIT

RHS

072

V---Ph---Hz*

208/230---3---60

460---3---60

IFM

TYPE

STD

MED**

HIGH

STD

MED**

Nom

(kW)

---

4.9/6.5

FLA

---

MCA

30.5

13.6/15.6

47.5/50.0

7.9/10.5

21.9/25.3

57.8/62.1

12.0/16.0 33.4/38.5

72.2/78.6

WITHOUT P.E.

DISC. SIZE

MOCP

45

60/60

60/70

80/80

FLA

30

45/47

55/59

68/74

LRA

146

160/162 49.4/51.9

168/171

179/185

MCA

32.4

59.7/64.0

74.1/80.5

WITH P.E.

MOCP

50

60/60

60/70

80/90

DISC. SIZE

FLA LRA

32

47/50

57/61

70/76

148

162/164

170/173

181/187

15.8/21.0 43.8/50.5

85.2/93.6

90/100 80/88 234/247 87.1/95.5

90/100 82/90 236/249

19.9/26.5 55.2/63.8

99.5/110.2

100/125 93/103 256/274 101.4/112.1 110/125 95/105 258/276

----32.8

50 32 183 34.7

50 34 185

4.9/6.5

13.6/15.6

49.8/52.3

7.9/10.5

21.9/25.3

60.1/64.4

12.0/16.0 33.4/38.5

15.8/21.0 43.8/50.5

74.5/80.9

87.5/95.9

60/60

70/70

80/90

90/100

48/50

57/61

71/76

83/90

197/199 51.7/54.2

205/208 62.0/66.3

216/222 76.4/82.8

271/284 89.4/97.8

60/60

70/70

80/90

90/100

50/52

60/63

73/79

85/92

199/201

207/210

218/224

273/286

19.9/26.5 55.2/63.8 101.8/112.5 110/125 96/106 293/311 103.7/114.4 110/125 98/108 295/313

----32.8

50 32 183 34.7

50 34 185

4.9/6.5

13.6/15.6

49.8/52.3

7.9/10.5

21.9/25.3

60.1/64.4

60/60

70/70

48/50

57/61

197/199

205/208

51.7/54.2

62.0/66.3

60/60

70/70

50/52

60/63

199/201

207/210

12.0/16.0 33.4/38.5

15.8/21.0 43.8/50.5

74.5/80.9

87.5/95.9

80/90

90/100

71/76

83/90

216/222

271/284

76.4/82.8

89.4/97.8

80/90

90/100

73/79

85/92

218/224

273/286

19.9/26.5 55.2/63.8 101.8/112.5 110/125 96/106 293/311 103.7/114.4 110/125 98/108 295/313

---

6.0

11.5

14.0

---

7.2

13.8

16.8

15.5

24.5

32.8

36.5

25

30

35

40

15

23

31

34

73

80

87

90

16.5

25.5

33.8

37.5

25

30

40

40

16

24

32

36

74

81

88

91

23.0

25.5

---

6.0

11.5

14.0

23.0

27.7

30.7

---

7.2

13.8

16.8

27.7

50.2

53.9

16.3

25.3

33.6

37.3

51.0

60

60

25

30

35

40

60

47

50

16

24

32

35

48

128

134

92

99

106

109

147

51.2

54.9

17.3

26.3

34.6

38.3

52.0

60

60

25

30

40

40

60

48

52

17

25

33

36

49

129

135

93

100

107

110

148

HIGH

25.5

---

6.0

11.5

14.0

23.0

25.5

30.7

---

7.2

13.8

16.8

27.7

30.7

54.7

16.3

25.3

33.6

37.3

51.0

54.7

575---3---60

STD

MED**

---

---

---

---

12.3

12.7

HIGH ----12.7




60

25

30

35

40

60

60

15

20

20

51

16

24

32

35

48

51

12

12

12

153

92

99

106

109

147

153

59

74

74

55.7

17.3

26.3

34.6

38.3

52.0

55.7

14.2

14.6

14.6

60

25

30

40

40

60

60

20

20

20

52

17

25

33

36

49

52

14

15

15

154

93

100

107

110

148

154

61

76

76

65




UNIT

RHS

090

V---Ph---Hz

208/23---3---60

460---3---60

IFM

TYPE

STD

MED**

HIGH

STD

MED**

Nom

(kW)

---

7.8/10.4

FLA

---

21.7/25.0

MCA

37.7

64.8/68.9

12.0/16.0 33.4/38.5

79.4/85.8

WITHOUT P.E.

MOCP

50

70/70

80/90

DISC. SIZE

FLA

40

65/68

78/84

LRA

193

215/218

226/232

MCA

41.5

68.6/72.7

83.2/89.6

WITH P.E.

MOCP

50

70/80

90/90

18.6/24.8 51.7/59.7 102.3/112.3 110/125 99/108 245/253 106.1/116.1

110/125

DISC. SIZE

FLA

44

69/73

82/88

LRA

197

219/222

230/236

103/113 249/257

24.0/32.0 66.7/77.0 121.1/133.9 125/150 116/128 260/270 124.9/137.7

125/150

31.8/42.4 88.4/102.0 148.2/165.2 150/175 141/157 370/397 152.0/169.0

175/175

----40.0

50 42 230 43.8

50

121/132

146/161

47

264/274

374/401

234

7.8/10.4

21.7/25.0

67.1/71.2

12.0/16.0 33.4/38.5

81.7/88.1

70/80

90/90

67/71

81/86

252/255

263/269

70.9/75.0

85.5/91.9

80/80

90/100

18.6/24.8 51.7/59.7 104.6/114.6 110/125 102/111 282/290 108.4/118.4

110/125

24.0/32.0 66.7/77.0 123.4/136.2 125/150 119/131 297/307 127.2/140.0

150/150

31.8/42.4 88.4/102.0 150.5/167.5 175/175 144/160 407/434 154.3/171.3

175/175

----40.0

50 42 230 43.8

50

7.8/10.4

21.7/25.0

67.1/71.2

12.0/16.0 33.4/38.5

81.7/88.1

70/80

90/90

67/71

81/86

252/255

263/269

70.9/75.0

85.5/91.9

80/80

90/100

72/75

85/91

47

72/75

85/91

256/259

267/273

106/115 286/294

123/135 301/311

148/164 411/438

234

256/259

267/273

18.6/24.8 51.7/59.7 104.6/114.6 110/125 102/111 282/290 108.4/118.4

110/125

24.0/32.0 66.7/77.0 123.4/136.2 125/150 119/131 297/307 127.2/140.0

150/150

31.8/42.4 88.4/102.0 150.5/167.5 175/175 144/160 407/434 154.3/171.3

175/175

---

13.9

16.5

27.8

---

16.7

19.8

33.4

17.9

38.8

42.7

59.7

20

40

45

60

19

38

42

57

95

112

115

128

19.7

40.6

44.5

61.5

25

45

45

70

33.0

41.7

---

13.9

16.5

27.8

33.0

39.7

50.2

---

16.7

19.8

33.4

39.7

67.6

80.7

18.7

39.6

43.5

60.5

68.4

70

90

25

40

45

70

70

65

77

20

39

43

58

65

135

195

114

131

134

147

154

69.4

82.5

20.5

41.4

45.3

62.3

70.2

45

50

70

80

70

90

25

106/115 286/294

123/135 301/311

148/164 411/438

21

40

44

59

67

79

22

41

45

60

68

97

114

117

130

137

197

116

133

136

149

156

575---3---60

HIGH

STD

MED**

---

17.0

34.0

---

17.0

34.0

---

41.7

---

13.9

16.5

27.8

33.0

41.7

50.2

---

16.7

19.8

33.4

39.7

50.2

---

20.4

40.9

---

20.4

40.9

---

81.5

18.7

39.6

43.5

60.5

68.4

81.5

13.5

39.0

64.6

13.9

39.4

65.0

13.9

HIGH 17.0

34.0

20.4

40.9

39.4

65.0




40

70

20

15

40

70

20

40

70

45

70

70

90

90

25

40

38

62

15

14

38

61

15

38

62

43

58

65

78

78

20

39

77

97

118

92

112

133

92

112

133

214

114

131

134

147

154

214

17.3

42.8

68.4

17.7

43.2

68.8

17.7

43.2

68.8

83.3

20.5

41.4

45.3

62.3

70.2

83.3

45

70

20

20

45

70

20

45

70

50

70

80

90

90

25

45

43

66

19

19

42

66

19

43

66

45

60

68

80

80

22

41

81

101

122

96

116

137

96

116

137

216

116

133

136

149

156

216

66




UNIT

RHS

102

V---Ph---Hz

208/230---3---60

460---3---60

IFM

TYPE

STD

MED**

HIGH

STD

MED**

Nom

(kW)

---

7.8/10.4

FLA

---

21.7/25.0

12.0/16.0 33.4/38.5

MCA

41.9

69.0/73.2

83.7/90.0

WITHOUT P.E.

MOCP

50

70/80

90/100

DISC. SIZE

FLA

44

82/88

LRA

201

234/240

MCA

45.7

69/72 223/226 72.8/77.0

87.5/93.8

WITH P.E.

MOCP

60

80/80

90/100

DISC. SIZE

FLA

48

73/77

86/92

LRA

205

227/230

238/244

18.6/24.8 51.7/59.7 106.5/116.5 110/125 103/112 253/261 110.3/120.3 125/125 107/117 257/265

24.0/32.0 66.7/77.0 125.3/138.2 150/150 120/132 268/278 129.1/142.0 150/150 125/137 272/282

31.8/42.4 88.4/102.0 152.4/169.4 175/175 145/161 378/405 156.2/173.2 175/175 150/165 382/409

----44.2

60 46 238 48.0

60 51 242

7.8/10.4

21.7/25.0

71.3/75.5

80/80

12.0/16.0 33.4/38.5

86.0/92.3

90/100

71/75 260/263 75.1/79.3

85/91 271/277 89.8/96.1

80/80

90/100

76/79

89/95

264/267

275/281

18.6/24.8 51.7/59.7 108.8/118.8 110/125 106/115 290/298 112.6/122.6 125/125 110/119 294/302

24.0/32.0 66.7/77.0 127.6/140.5 150/150 123/135 305/315 131.4/144.3 150/150 127/139 309/319

31.8/42.4 88.4/102.0 154.7/171.7 175/175 148/164 415/442 158.5/175.5 175/200 152/168 419/446

----44.2

60 46 238 48.0

60 51 242

7.8/10.4

21.7/25.0

71.3/75.5

80/80

12.0/16.0 33.4/38.5

86.0/92.3

90/100

71/75

85/91

260/263

271/277

75.1/79.3

89.8/96.1

80/80

90/100

76/79

89/95

264/267

275/281

18.6/24.8 51.7/59.7 108.8/118.8 110/125 106/115 290/298 112.6/122.6 125/125 110/119 294/302

24.0/32.0 66.7/77.0 127.6/140.5 150/150 123/135 305/315 131.4/144.3 150/150 127/139 309/319

31.8/42.4 88.4/102.0 154.7/171.7 175/175 148/164 415/442 158.5/175.5 175/200 152/168 419/446

---

13.9

16.5

27.8

---

16.7

19.8

33.4

19.2

40.0

43.9

60.9

25

45

45

70

20

39

43

58

100

117

120

133

21.0

41.8

45.7

62.7

25

45

50

70

22

41

45

60

102

119

122

135

33.0

41.7

---

13.9

16.5

27.8

33.0

39.7

50.2

---

16.7

19.8

33.4

39.7

68.8

81.9

20.0

40.8

44.7

61.7

69.6

70

90

25

45

45

70

70

66

78

21

40

44

59

67

140

200

119

136

139

152

159

70.6

83.7

21.8

42.6

46.5

63.5

71.4

80

90

25

45

50

70

80

68

80

23

42

46

61

69

142

202

121

138

141

154

161

575---3---60

HIGH

STD

MED**

---

17.0

34.0

---

17.0

34.0

---

41.7

---

13.9

16.5

27.8

33.0

41.7

50.2

---

16.7

19.8

33.4

39.7

50.2

---

20.4

40.9

---

20.4

40.9

---

82.7

20.0

40.8

44.7

61.7

69.6

82.7

HIGH 17.0

34.0

20.4

40.9

41.3

66.9




15.4

40.9

66.5

15.8

41.3

66.9

15.8

45

70

20

20

45

70

20

45

70

45

70

70

90

90

25

45

40

64

17

16

40

63

17

40

64

44

59

67

79

79

21

40

85

105

126

100

120

141

100

120

141

219

119

136

139

152

159

219

19.2

44.7

70.3

19.6

45.1

70.7

19.6

45.1

70.7

84.5

21.8

42.6

46.5

63.5

71.4

84.5

50

80

25

25

45

80

25

50

80

50

70

80

90

90

25

45

44

68

21

20

44

68

21

44

68

46

61

69

81

81

23

42

89

109

130

104

124

145

104

124

145

221

121

138

141

154

161

221

67



* Nominal valves, listed as 208/240V, 480V or 600V as appropriate.

** Available from Fast Parts.


1

Fuse or breaker

LEGEND:

CO

DISC

FLA

IFM

LRA

MCA

MOCP

-- Convenient outlet

-- Disconnect

-- Full load amps

-- Indoor fan motor

-- Locked rotor amps

-- Minimum circuit amps

-- Maximum over current protection

-- Power exhaust PE

UNPWRD CO -- Unpowered convenient outlet

NOTES:

1.In compliance with NEC requirements for multimotor and combination load equipment (refer to NEC Articles 430 and

440), the overcurrent protective device for the unit shall be fuse or HACR breaker. Canadian units may be fuse or circuit breaker.

1.Unbalanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the following formula to determine the percentage of voltage imbalance.

Example: Supply voltage is 230-3-60

Average Voltage =

=

Determine maximum deviation from average voltage.

(AB) 227 – 224 = 3 v

(BC) 231 – 227 = 4 v

(AC) 227 – 226 = 1 v

Maximum deviation is 4 v.

Determine percent of voltage imbalance.

% Voltage Imbalance

AB = 224 v

BC = 231 v

AC = 226 v

(224 + 231 + 226)

3

227

= 100 x

=

4

227

= 1.76%

% Voltage Imbalance = 100 x max voltage deviation from average voltage average voltage

681

3

This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately.

APPENDIX V. WIRING DIAGRAM LIST

Wiring Diagrams

SIZE

036

048

060

072

090

102

VOLTAGE

208/230---1---60

208/230---3---60

460---3---60

575---3---60

208/230---1---60

208/230---3---60

460---3---60

575---3---60

208/230---1---60

208/230---3---60

460---3---60

575---3---60

208/230---3---60

460---3---60

575---3---60

208/230---3---60

460---3---60

575---3---60

208/230---3---60

460---3---60

575---3---60

RHS

CONTROL

48TM501434.02

48TM501434.02

48TM501434.02

48TM501434.02

48TM501434.02

48TM501434.02

48TM501434.02

48TM501434.02

48TM501434.02

48TM501434.02

48TM501434.02

48TM501434.02

48TM501434.02

48TM501434.02

48TM501434.02

48TM501370.03

48TM501370.03

48TM501370.03

48TM501370.03

48TM501370.03

48TM501370.03

POWER

48TM501435.02

48TM501436.02

48TM501436.02

48TM501436.02

48TM501435.02

48TM501436.02

48TM501436.02

48TM501436.02

48TM501435.02

48TM501436.02

48TM501436.02

48TM501436.02

48TM501436.0

48TM501436.0

48TM501436.0

48TM501371.04

48TM501371.04

48TM501371.04

48TM501371.04

48TM501371.04

48TM501371.04

NOTE: Component arrangement on Control; Legend on Power Schematic

68

APPENDIX VI. MOTORMASTER SENSOR LOCATIONS

Sensor

Location

Sensor

Location

FIGURE 54

RHS036 Outdoor Circuiting

Sensor

Location

FIGURE 56


Sensor

Location

FIGURE 55


FIGURE 57

RHS072Outdoor Circuiting

69

70

APPENDIX VI. MOTORMASTER SENSOR LOCATIONS

Sensor

Location

FIGURE 58

RHS090/102 Outdoor Circuiting

START-UP CHECKLIST

(Remove and Store in Job File)

I. PRELIMINARY INFORMATION

MODEL NO.:

DATE:

SERIAL NO.:

TECHNICIAN:

II. PRE-START-UP (insert checkmark in box as each item is completed)

j

VERIFY THAT JOBSITE VOLTAGE AGREES WITH VOLTAGE LISTED ON RATING PLATE j

VERIFY THAT ALL PACKAGING MATERIALS HAVE BEEN REMOVED FROM UNIT j

REMOVE ALL SHIPPING HOLD DOWN BOLTS AND BRACKETS PER INSTALLATION INSTRUCTIONS j

VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS j

CHECK REFRIGERANT PIPING FOR INDICATIONS OF LEAKS; INVESTIGATE AND REPAIR IF NECESSARY j

CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS j

CHECK THAT RETURN (INDOOR) AIR FILTERS ARE CLEAN AND IN PLACE j

VERIFY THAT UNIT INSTALLATION IS LEVEL j

CHECK FAN WHEELS AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND SETSCREW

TIGHTNESS j

CHECK TO ENSURE THAT ELECTRICAL WIRING IS NOT IN CONTACT WITH REFRIGERANT LINES

OR SHARP METAL EDGES j

CHECK PULLEY ALIGNMENT AND BELT TENSION PER INSTALLATION INSTRUCTIONS

III. START-UP

ELECTRICAL

SUPPLY VOLTAGE L1-L2

CIRCUIT 1 COMPRESSOR AMPS L1

CIRCUIT 2 COMPRESSOR AMPS L1

INDOOR-FAN AMPS

OUTDOOR-FAN AMPS NO. 1

L2-L3

L2

L2

NO. 2

L3-L1

L3

L3

TEMPERATURES

OUTDOOR-AIR TEMPERATURE

RETURN-AIR TEMPERATURE

COOLING SUPPLY AIR

PRESSURES (Cooling Mode)

REFRIGERANT SUCTION, CIRCUIT 1

REFRIGERANT SUCTION, CIRCUIT 2

REFRIGERANT DISCHARGE, CIRCUIT 1

REFRIGERANT DISCHARGE, CIRCUIT 2

DB

DB

DB

PSIG

PSIG

PSIG

PSIG

WB

WB

WB

F

F

F

F j

VERIFY THAT 3-PHASE FAN MOTOR AND BLOWER ARE ROTATING IN CORRECT DIRECTION.

j

VERIFY THAT 3-PHASE SCROLL COMPRESSOR IS ROTATING IN THE CORRECT DIRECTION j

VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS

GENERAL

j

SET ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO MATCH JOB REQUIREMENTS

(IF EQUIPPED)

71

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