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506 01 2303 01

Specifications are subject to change without notice.

INSTALLATION GUIDELINE

Replacement /Retrofit – R22 to R--410A

Split system heat pumps are intended to be installed with

matching indoor sections only. The CHS heat pump

outdoor units are matched only with same-size FHS

indoor sections. Existing R-22 indoor coils cannot be

converted to R-410A heat pump duty. Only the existing

refrigerant piping is a candidate for retrofit use.

Acid test –

If the existing system is being replaced

because of a compressor electrical failure, assume acid is

in system. If system is being replaced for any other

reason, use an approved acid test kit to determine acid

level. If even low levels of acid are detected, install a 100

percent activated alumina suction line filter drier in

addition to the replacement liquid-line filter drier. Operate

this system in COOLING ONLY. Remove the suction line

filter drier as soon as possible, with a maximum of 72 hr

of operation.

Recommendation: Install a ball valve in the liquid line at

the filter drier location when installing a suction filter in

the suction line.

Evaluate existing refrigerant piping –

Reuse of existing

refrigerant piping involves three issues: quality (strength) of
existing tubing, cleanliness and tube size. R--410A operates
at pressures that are 50 to 70% higher than the operating

pressures in R--22 systems. It is important that the existing

piping set be in excellent physical condition to be considered

suitable for re--use with R--410A. If the physical condition of

the existing piping set is not excellent, then remove the

existing piping and replace with new piping. Refer to Step 5

for a discussion on selecting pipe sizes for these CHS heat

pumps; refer to Table 2 for recommended pipe sizes.

If the existing piping set is suitable for re--use with

R--410A based on its condition, determine the relative

locations and elevation differences between outdoor

section (CHS) and indoor section (FHS) and then check

the sizes of the existing lines against the recommended

pipe sizes in Table 2 and the MAXIMUM vapor riser pipe

size use data in Table 3. Do not use pipe sizes that exceed

these maximum vapor riser sizes as oil return at part load

conditions in vertical rises may be an issue. Replace any

riser sections with reduced pipe sizes if existing pipe sizes

exceed these maximum tube size limits.

Installation –

1. Remove the existing evaporator coil or fan coil and

install the replacement coil.

2. Drain oil from low points and traps in vapor line

tubing if they were not replaced.

3. Remove the existing outdoor unit. Install the new out-

door unit according to these installation instructions.

4. Flush the interconnection piping system with dry

Nitrogen to eliminate as much trace of mineral oil as

possible.

5. Install the factory-supplied liquid-line filter drier at

the indoor coil just upstream of the TXV.

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment

damage or improper operation.
Never install suction--line filter drier in the liquid--line

of a R--410A refrigerant system.

CAUTION

6. If required, install a 100% activated alumina suction

line filter drier at the outdoor unit.

7. Evacuate and charge the system according to the in-

structions in this installation manual.

8. Operate the system for 10 hr. In COOLING MODE

ONLY. Monitor the pressure drop across the suction

line filter drier. If pressure drop exceeds 3 psig

(21kPa), replace suction-line and liquid-line filter

driers. Be sure to purge system with dry nitrogen and

evacuate when replacing filter driers. Continue to

monitor the pressure drop across suction-line filter

drier. Repeat filter changes is necessary. Never leave

suction-line filter drier in system longer than 72 hr

(actual time).

Rated Indoor Airflow (cfm)

The table below lists the rated indoor airflow used for the

AHRI efficiency rating for the units covered in this

document.

CHS with FHS

Model Numbers

Full Load Airflow (cfm)

CHS072*A/B --- FHS072

2400

CHS072*G/H --- FHS072

2400

CHS091 --- FHS090

3000

CHS121*A/B --- FHS120

3000

CHS121*G/H --- FhS120

3000

Содержание CHS072

Страница 1: ...16 OPERATING SEQUENCE 26 Indoor Supply Fan 26 Cooling Unit Without Economizer 26 Cooling Unit With Economizer 27 Heating 27 Defrost Cycle 27 Supplemental Heating Emergency Heating 28 Cooling and Heat...

Страница 2: ...death WARNING signifies hazards 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 NOT...

Страница 3: ...n CHS and indoor section FHS and then check the sizes of the existing lines against the recommended pipe sizes in Table 2 and the MAXIMUM vapor riser pipe size use data in Table 3 Do not use pipe size...

Страница 4: ...of Gravity Unit Height CHS072 444 201 134 61 97 44 90 41 123 56 22 559 25 635 13 330 42 3 8 1076 CHS091 483 219 162 74 110 50 85 39 125 57 20 508 24 610 21 533 42 3 8 1076 CHS121 575 261 186 84 126 5...

Страница 5: ...2 1100 Motor Hp 1 4 1 4 1 4 1 4 1 4 Diameter in 22 22 22 22 22 Nominal Airflow Cfm Total 6 000 6 000 6 000 6 000 6 000 Watts Total 610 610 610 610 610 OUTDOOR COIL Qty 1 Round Tube Plate Fin RTPF Face...

Страница 6: ...eter mm 560 560 560 560 560 Nominal Airflow L s 2832 2832 2832 2832 2832 Watts Total 610 610 610 610 610 OUTDOOR COIL Qty 1 Round Tube Plate Fin RTPF Face Area sq m total 1 6 1 6 2 1 2 6 2 6 Rows Fins...

Страница 7: ...S POSITION Week of manufacture fiscal calander Manufacturing location 5 Sequence number Year of manufacture 15 2015 1 2 6 10 3 4 POSITION NUMBER TYPICAL 1 2 3 4 5 6 7 8 9 10 0 5 1 5 C 1 2 3 4 5 C15033...

Страница 8: ...is unrestricted on all sides and above S The unit may be mounted on a level pad directly on the base channels or mounted on raised pads at support points See Tables 1A and 1B for unit operating weigh...

Страница 9: ...cal separation between the indoor and outdoor units check to ensure that the separation is within allowable limits Relocate equipment if necessary Provide Safety Relief If local codes dictate an addit...

Страница 10: ...ghtglass in each circuit is recommended Locate the sightglass es between the outlet of the filter drier and the TXV inlet Refer to Table 5 for recommendations on refrigeration specialties Select the f...

Страница 11: ...chrader valve cores see Fig 7 Before making any brazed connections to the unit service valves remove both Schrader valve caps and cores and save for re installation Connect a source for nitrogen to on...

Страница 12: ...Check all factory and field electrical connections for tightness Field supplied wiring shall conform with the limitations of minimum 63 F 33 C rise All units except 208 230 v units are factory wired...

Страница 13: ...A behind a hinged waterproof access cover located on the end panel of the unit See Fig 10 Control Box Access Panel Pwd CO Transformer Convenience Outlet GFCI Pwd CO Fuse Switch C11038 Fig 10 Convenie...

Страница 14: ...tion board and the indoor unit connection board If the thermostat does not require a 24 v source no C connection required use a thermostat cable or equivalent with minimum of four leads One additional...

Страница 15: ...7 39 5 8 39 2 0 7 15 20 15 82 Legend and Notes for Table 8 LEGEND BRKR Circuit breaker CO Convenient outlet FLA Full Load Amps LRA Locked Rotor Amps MCA Minimum Circuit Amps Protection NEC National El...

Страница 16: ...d low side pressures to equalize before starting compressor If pressures do not equalize readily charge vapor on low side of system to assure charge in the evaporator Refer to GTAC II Module 5 Chargin...

Страница 17: ...hich occurs up to 90 minutes later Advanced Scroll Temperature Protection will reset automatically before the motor protector resets which may take up to 2 hours Start Unit Disconnect the field low vo...

Страница 18: ...12 18 24 30 36 42 48 54 60 20 40 60 80 100 120 140 50 100 150 200 250 300 350 400 450 500 550 600 Temperature at Liquid Valve C F Pressure at Liquid Valve PSIG Kpa 6 Ton Heat Pump Charging Chart R410a...

Страница 19: ...AGE CHARGING CHART PURON COMPRESSOR FULL LOAD ALL CONDENSER FANS OPERATING 60 54 48 42 36 30 24 18 12 6 0 6 140 120 100 80 60 40 20 Pressure at Liquid Valve PSIG Kpa Temperature at Liquid Valve C F PN...

Страница 20: ...2 18 24 30 36 42 48 54 60 20 40 60 80 100 120 140 50 100 150 200 250 300 350 400 450 500 550 600 Temperature at Liquid Valve C F Pressure at Liquid Valve PSIG Kpa 7 5 Ton Heat Pump Charging Chart R410...

Страница 21: ...2 18 24 30 36 42 48 54 60 20 40 60 80 100 120 140 50 100 150 200 250 300 350 400 450 500 550 600 Temperature at Liquid Valve C F Pressure at Liquid Valve PSIG Kpa 10 Ton Heat Pump Charging Chart R410a...

Страница 22: ...AGE CHARGING CHART PURON COMPRESSOR FULL LOAD ALL CONDENSER FANS OPERATING 60 54 48 42 36 30 24 18 12 6 0 6 140 120 100 80 60 40 20 Pressure at Liquid Valve PSIG Kpa Temperature at Liquid Valve C F PN...

Страница 23: ...506 01 2303 01 23 Specifications are subject to change without notice C11043 Fig 20 CHS072 121 A B Single Circuit Single Stage Wiring Diagram 208 230 3 60 shown...

Страница 24: ...24 506 01 2303 01 Specifications are subject to change without notice C150345 Fig 21 CHS072 G H Single Circuit Two Stage Wiring Diagram 208 230 460 3 60 shown...

Страница 25: ...506 01 2303 01 25 Specifications are subject to change without notice C150346 Fig 22 CHS121 G H Single Circuit Two Stage Wiring Diagram 208 230 460 3 60 shown...

Страница 26: ...G H uses two compressors in tandem on a single circuit in conjunction with two single stage Comfort Alert Modules CADM CHS072 G H When thermostat calls for Stage 1 Cooling terminal Y1 is energized Th...

Страница 27: ...ctions and economizer accessory installation instructions for operating sequences when system is equipped with accessory economizer Heating When the thermostat calls for first stage heating terminal W...

Страница 28: ...gher space heating demand or when selected as emergency heat mode When the space heating demand decreases below the 2nd stage limit or emergency heat is turned off W2 is de energized and supplemental...

Страница 29: ...nit immediately under component s to be serviced and prevent lubri cant run offs through the louvered openings in the base pan 4 Perform required service 5 Remove and dispose of any oil contaminated m...

Страница 30: ...dilution during shutdown whenever compressor is not operating The heater is wired to cycle with the compressor the heater is off when compressor is running and on when compressor is off The crankcase...

Страница 31: ...t Connection Note Speed Up Jumper JMP17 Speed Up Jumper JMP18 Jumper for 1 3 secs Factory Test defrost runs for 12 seconds or less Jumper for 5 20 secs Forced Defrost defrost runs for 30 secs if DFT1...

Страница 32: ...l test for a need to defrost 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...

Страница 33: ...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 Fo...

Страница 34: ...2303 01 Specifications are subject to change without notice Fans Service Valves C11045 Fig 28 CHS072 Exterior LOC HPS High Flow Access Ports Outdoor Coil Defrost Thermostat DFT C150032 Fig 29 CHS072...

Страница 35: ...03 01 35 Specifications are subject to change without notice Fans Service Valves C11047 Fig 30 CHS091 Exterior LOC HPS High Flow Access Ports Outdoor Coil Defrost Thermostat DFT C150033 Fig 31 CHS091...

Страница 36: ...303 01 Specifications are subject to change without notice Fans Service Valves C11049 Fig 32 CHS121 Exterior LOC HPS High Flow Access Ports Outdoor Coil Defrost Thermostat DFT C150034 Fig 33 CHS121 A...

Страница 37: ...506 01 2303 01 37 Specifications are subject to change without notice LPS Defrost Thermostat DFT HPS High Flow Access Ports C150424 Fig 34 CHS121 G H Interior...

Страница 38: ...ER GRN ALERT YEL TRIP RED C10086 Fig 35 CADM Housing LED Locations The ALERT LED indicates an abnormal condition exists in the system through a flash code The ALERT LED will blink a number of times co...

Страница 39: ...Refer to Code 3 for troubleshooting Yellow ALERT Flash Code 3 Short Cycling Compressor is running only briefly LOCKOUT 1 If low pressure switch is open a Low refrigerant charge b Evaporator blower is...

Страница 40: ...t contactor coil falls below 0 5VAC when off Outdoor Fans Each fan is supported by a formed wire mount bolted to the fan deck and covered with a wire guard Fan motors have permanently lubricated beari...

Страница 41: ...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 i...

Страница 42: ...nned areas must be thoroughly cleaned 10 Finned surfaces should remain wet with cleaning so lution for 10 minutes 11 Ensure surfaces are not allowed to dry before rinsing Reapply cleaner as needed to...

Страница 43: ...utdoor fan cooling or indoor fan heating motor or capacitor Replace Restriction in refrigerant system Locate restriction and remove Compressor Operates Continuously Dirty air filter Replace filter Uni...

Страница 44: ...e with POE oils S Vacuum pumps will not remove moisture from oil S Use only factory specified liquid line filter driers with rated working pressures greater than 600 psig S Do not install a suction li...

Страница 45: ...1 208 230 3 60 38AU500363 460 3 60 38AU500362 575 3 60 38AU500435 CAS072 G H 2 208 230 3 60 38AU000443 460 3 60 38AU000443 575 3 60 38AU000444 CAS091 A B 1 208 230 3 60 38AU500363 460 3 60 38AU500362...

Страница 46: ..._F at lower ambient For heat pump units the speed control bypass relay SCB is used to bypass the speed control during the heating mode resulting in full fan speed at all times To override the speed co...

Страница 47: ...506 01 2303 01 47 Specifications are subject to change without notice C10801 Fig 38 Sensor Locations...

Страница 48: ...1 4 32 1 4 CHS121 LEFT SIDE 28 1 2 29 29 3 4 43 1 8 1 1 4 9 1 4 17 1 4 25 1 4 33 1 4 41 1 4 BACK 40 40 3 4 41 1 2 43 1 8 4 1 4 11 1 4 18 1 4 25 1 4 32 1 4 39 1 4 RIGHT SIDE 25 25 1 2 26 1 4 43 1 8 4...

Страница 49: ...506 01 2303 01 49 Specifications are subject to change without notice D K J H G F E C B A C10800 Fig 39 Wind Baffles...

Страница 51: ...ONS MADE AND CHECKED Y N ARE ALL WIRING TERMINALS including main power supply TIGHT Y N HAS CRANKCASE HEATER BEEN ENERGIZED FOR 24 HOURS Y N INDOOR UNIT HAS WATER BEEN PLACED IN DRAIN PAN TO CONFIRM P...

Страница 52: ...RECORD CHECK OUTDOOR UNIT FAN SPEED AND RECORD AFTER AT LEAST 10 MINUTES RUNNING TIME RECORD THE FOLLOWING MEASUREMENTS COOLING HEATING VAPOR PRESSURE SUCTION LINE TEMP AT COMPRESSOR LIQUID PRESSURE L...

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