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XIX. DEMAND DEFROST CONTROL AND

HIGH/LOW PRESSURE CONTROLS

The demand defrost control monitors the outdoor ambient 

temperature, outdoor coil temperature and the compressor run 

time to determine when a defrost cycle is required.

Enhanced Feature Demand Defrost Control:

 This defrost 

control has high and low pressure control inputs with unique 

pressure switch logic built into the microprocessor to provide 

compressor and system protection without nuisance lockouts. 

The control cycles the compressor off for 30 seconds at the 

beginning and the end of the defrost cycle to eliminate the 

increased compressor noise caused by rapidly changing sys-

tem pressures when the reversing valve switches. See next 

page for diagnostic flash codes and sensor resistance values 

at various temperatures.

DEFROST INITIATION

A defrost will be initiated when the three conditions below are 

satisfied:

1. The outdoor coil temperature is below 35°F as measured by 

a good coil sensor,

2. The compressor has operated for at least 34 minutes with 

the outdoor coil temperature below 35°F and

3. The measured difference between the ambient temperature 

and the outdoor coil temperature is greater than the calcu-

lated difference determined by the defrost control micro-

processor.

DEFROST TERMINATION

Once a defrost is initiated, the defrost will continue until four-

teen minutes has elapsed or the coil temperature has reached 

the selected termination temperature. The factory setting is 

70°F but can be changed to 50°F, 60°F, or 80°F by relocating 

the jumper on the control board.

TEMPERATURE SENSORS

The coil sensor is located on the outdoor coil near the point fed 

by the distribution tubes from the expansion device, on the top 

most cross-over tube. The ambient air sensor is located out-

side the control box so it can sense outdoor temperatures.
If the ambient sensor fails, the defrost control will initiate a 

defrost every 34 minutes of compressor run time with the coil 

temperature below 35°F.
If the coil sensor fails, the defrost control will not initiate a 

defrost.

TEST MODE

The test mode is initiated by shorting the TEST pins. The 

unit must have an active heat pump heating call to enter the 

test mode. In this mode of operation, the enable temperature 

is ignored and all timers are sped up. To initiate a manual 

defrost, short and hold the TEST pins. Remove the short when 

the system switches to defrost mode after the compressor 

noise abatement delay. The defrost will terminate on time 

(14  minutes)  or  when  the  termination  temperature  has  been 

reached.

Test Sequence of Operation:
1) Provide a heating call to the heat pump.
2) Short test pins to bypass anti-short cycle timer. (If unit is run

-

ning, this step is not necessary.)

3) Short test pins and hold them shorted to enter defrost mode.

4) Release test pins once control exits noise abatement delay.
5) Monitor coil temperature when control exits defrost.
6) Unit should return to heating mode.

TROUBLESHOOTING DEMAND DEFROST

During the test mode the coil temperature should be moni-

tored. If the system exits defrost at approximately the termina-

tion temperature, the control is operating normlly. If not, check 

the coil and ambient temperature sensor resistances, using 

the sensor temperature vs. resistance table at the end of this 

section.
Immerse the sensor in water and measure the resistance of 

the sensor. At 35°F the resistance of the sensor should be 

approximately 30,000 ohms.
Ensure that the coil sensor is properly installed that is not loose 

or touching the cabinet.

HIGH/LOW PRESSURE CONTROL MONITORING -

ENHANCED DEFROST CONTROL

Status of high and low pressure controls is monitored by the 

enhanced feature demand defrost control and the following 

actions are taken.

High Pressure Control –

 Provides active protection in both 

cooling and heating modes at all outdoor ambient tempera-

tures. The high pressure control is an automatic reset type and 

opens at approximately 610 psig and closes at approximately 

420 psig. The compressor and fan motor will stop when the 

high pressure control opens and will start again if the high side 

pressure drops to approximately 420 psig where the automatic 

reset high pressure control resets. If the high pressure control 

opens 3 times within a particular call for heating or cooling 

operation, the defrost control will lock out compressor and out-

door fan operation.

Low Pressure Control –

 Provides active protection in both 

heating and cooling modes at all outdoor ambient tempera-

tures. The low pressure control is an automatic reset type 

and opens at approximately 15 psig and closes at approxi-

mately 40 psig. Operation is slightly different between cool-

ing and heating modes.

Cooling Mode:

 The compressor and fan motor will 

stop when the low pressure control opens and will start 

again when the low side pressure rises to approximate-

ly 40 psig after the low pressure control automatically 

resets. If the low pressure switch opens 3 times within 

a particular call for cooling operation, the defrost control 

will lock out compressor and outdoor fan operation.

Heating Mode:

 The compressor and outdoor fan motor 

will stop when the low pressure control opens and 

will start again when the low side pressure rises to 

approximately 40 psig when the low pressure control 

automatically resets. If the low pressure switch trips 

3 times within 120 minutes of operation during a par-

ticular call for heating operation, the defrost control 

will lock out compressor and outdoor fan operation. If 

the lock-out due to low pressure occurs at an outdoor 

ambient temperature below 5°F, the defrost control will 

automatically exit the lock-out mode when the outdoor 

ambient temperature rises to 5°F. This feature is nec-

essary since the low pressure control could possibly 

have opened due to the outdoor ambient being very 

low rather than an actual system fault.

Exiting Lock-Out Mode:

 To exit the lock-out mode, remove 

24 volts to the defrost control by removing power to the unit 

or by shorting the two defrost control pins together.

ENHANCED FEATURE DEFROST CONTROL 

Содержание RHPD Series

Страница 1: ...ON OF THIS UNIT READ THESE INSTRUCTIONS THOROUGHLY BEFORE ATTEMPTING INSTALLATION OR OPERATION FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN IMPROPER INSTALLATION ADJUSTMENT SERVICE OR MAINTENANC...

Страница 2: ...9 VII Ductwork 40 VIII Filters 40 IX Conversion Procedure 40 X Condensate Drain 40 XI Condensate Drain Outdoor Coil 41 XII Electrical Wiring 41 A Power Wiring 41 RXJJ Series Heater Kit Installation In...

Страница 3: ...ONAL INJURY OR DEATH WARNING THE UNIT MUST BE PERMANENTLY GROUNDED A GROUNDING LUG IS PROVIDED IN THE ELECTRIC HEAT ACCESS AREA FOR A GROUND WIRE FAILURE TO GROUND THIS UNIT CAN RESULT IN FIRE OR ELEC...

Страница 4: ...nting outside of the building The information on the rating plate is in compliance with the FTC and DOE rating for single phase units The following infor mation is for three phase units which are not...

Страница 5: ...ostatic Expansion Valve TXV The Bi Flow TXV is specifically designed to operate with R 410A heat pumps Replacement of the TXV should only be made with the factory specified bi flow R 410A valve Do not...

Страница 6: ...090 THRU 102 MODELS 50 1270 mm RETURN COVER SUPPLY COVER DRAIN PAN SERVICE DISCONNECT KNOCKOUT FIGURE 2 UNIT DIMENSIONS ST A1273 01_D 00 SERVICE PORT DOOR POWER ENTRY RECEPTACLE 29 1 4 743 mm 32 3 4...

Страница 7: ...7 mm FIGURE 4 REAR VIEW 55 3 8 1407 mm 59 1 2 1511 mm 14 356 mm 26 3 4 679 mm 59 1 8 1507 mm 6 1 2 165 mm 6 5 8 321 mm 5 1 2 140 mm 28 1 2 724 mm 6 3 8 162 mm 36 3 8 924 mm 86 3 4 2203 mm 90 1 8 2289...

Страница 8: ...No Type 1 Scroll 1 Scroll 1 Scroll 1 Scroll Outdoor Sound Rating dB 5 88 88 88 88 Outdoor Coil Fin Type Louvered Louvered Louvered Louvered Tube Type MicroChannel MicroChannel MicroChannel MicroChann...

Страница 9: ...No Type 1 Scroll 1 Scroll 1 Scroll 1 Scroll Outdoor Sound Rating dB 5 88 88 88 88 Outdoor Coil Fin Type Louvered Louvered Louvered Louvered Tube Type MicroChannel MicroChannel MicroChannel MicroChann...

Страница 10: ...r No Type 1 Scroll 1 Scroll 1 Scroll 1 Scroll Outdoor Sound Rating dB 5 88 88 88 88 Outdoor Coil Fin Type Louvered Louvered Louvered Louvered Tube Type MicroChannel MicroChannel MicroChannel MicroChan...

Страница 11: ...r No Type 1 Scroll 1 Scroll 1 Scroll 1 Scroll Outdoor Sound Rating dB 5 88 88 88 88 Outdoor Coil Fin Type Louvered Louvered Louvered Louvered Tube Type MicroChannel MicroChannel MicroChannel MicroChan...

Страница 12: ...sor No Type 1 Scroll 1 Scroll 1 Scroll 1 Scroll Outdoor Sound Rating dB 5 88 88 88 88 Outdoor Coil Fin Type Louvered Louvered Louvered Louvered Tube Type MicroChannel MicroChannel MicroChannel MicroCh...

Страница 13: ...essor No Type 1 Scroll 1 Scroll 1 Scroll 1 Scroll Outdoor Sound Rating dB 5 88 88 88 88 Outdoor Coil Fin Type Louvered Louvered Louvered Louvered Tube Type MicroChannel MicroChannel MicroChannel Micro...

Страница 14: ...essor No Type 1 Scroll 1 Scroll 1 Scroll 1 Scroll Outdoor Sound Rating dB 5 88 88 88 88 Outdoor Coil Fin Type Louvered Louvered Louvered Louvered Tube Type MicroChannel MicroChannel MicroChannel Micro...

Страница 15: ...essor No Type 1 Scroll 1 Scroll 1 Scroll 1 Scroll Outdoor Sound Rating dB 5 88 88 88 88 Outdoor Coil Fin Type Louvered Louvered Louvered Louvered Tube Type MicroChannel MicroChannel MicroChannel Micro...

Страница 16: ...essor No Type 1 Scroll 1 Scroll 1 Scroll 1 Scroll Outdoor Sound Rating dB 5 88 88 88 88 Outdoor Coil Fin Type Louvered Louvered Louvered Louvered Tube Type MicroChannel MicroChannel MicroChannel Micro...

Страница 17: ...essor No Type 1 Scroll 1 Scroll 1 Scroll 1 Scroll Outdoor Sound Rating dB 5 88 88 88 88 Outdoor Coil Fin Type Louvered Louvered Louvered Louvered Tube Type MicroChannel MicroChannel MicroChannel Micro...

Страница 18: ...essor No Type 1 Scroll 1 Scroll 1 Scroll 1 Scroll Outdoor Sound Rating dB 5 88 88 88 88 Outdoor Coil Fin Type Louvered Louvered Louvered Louvered Tube Type MicroChannel MicroChannel MicroChannel Micro...

Страница 19: ...ssor No Type 1 Scroll 1 Scroll 1 Scroll 1 Scroll Outdoor Sound Rating dB 5 88 88 88 88 Outdoor Coil Fin Type Louvered Louvered Louvered Louvered Tube Type MicroChannel MicroChannel MicroChannel MicroC...

Страница 20: ...essor No Type 1 Scroll 1 Scroll 1 Scroll 1 Scroll Outdoor Sound Rating dB 5 88 88 88 88 Outdoor Coil Fin Type Louvered Louvered Louvered Louvered Tube Type MicroChannel MicroChannel MicroChannel Micro...

Страница 21: ...High Temp Btuh kW Rating 112 000 32 82 112 000 32 82 System Power KW COP 9 03 3 3 9 03 3 3 Low Temp Btuh kW Rating 68 000 19 92 68 000 19 92 System Power KW COP 8 3 2 26 8 3 2 26 Compressor No Type 1...

Страница 22: ...essor No Type 1 Scroll 1 Scroll 1 Scroll 1 Scroll Outdoor Sound Rating dB 5 88 88 88 88 Outdoor Coil Fin Type Louvered Louvered Louvered Louvered Tube Type MicroChannel MicroChannel MicroChannel Micro...

Страница 23: ...essor No Type 1 Scroll 1 Scroll 1 Scroll 1 Scroll Outdoor Sound Rating dB 5 88 88 88 88 Outdoor Coil Fin Type Louvered Louvered Louvered Louvered Tube Type MicroChannel MicroChannel MicroChannel Micro...

Страница 24: ...mpressor No Type 1 Scroll 1 Scroll 1 Scroll 1 Scroll Outdoor Sound Rating dB 5 88 88 88 88 Outdoor Coil Fin Type Louvered Louvered Louvered Louvered Tube Type MicroChannel MicroChannel MicroChannel Mi...

Страница 25: ...ompressor No Type 1 Scroll 1 Scroll 1 Scroll 1 Scroll Outdoor Sound Rating dB 5 88 88 88 88 Outdoor Coil Fin Type Louvered Louvered Louvered Louvered Tube Type MicroChannel MicroChannel MicroChannel M...

Страница 26: ...ompressor No Type 1 Scroll 1 Scroll 1 Scroll 1 Scroll Outdoor Sound Rating dB 5 88 88 88 88 Outdoor Coil Fin Type Louvered Louvered Louvered Louvered Tube Type MicroChannel MicroChannel MicroChannel M...

Страница 27: ...ompressor No Type 1 Scroll 1 Scroll 1 Scroll 1 Scroll Outdoor Sound Rating dB 5 88 88 88 88 Outdoor Coil Fin Type Louvered Louvered Louvered Louvered Tube Type MicroChannel MicroChannel MicroChannel M...

Страница 28: ...8 000 19 92 68 000 19 92 68 000 19 92 System Power KW COP 8 3 2 26 8 3 2 26 8 3 2 26 Compressor No Type 1 Scroll 1 Scroll 1 Scroll Outdoor Sound Rating dB 5 88 88 88 Outdoor Coil Fin Type Louvered Lou...

Страница 29: ...0 230 460 460 460 Phase 3 3 3 3 3 3 3 3 3 RPM 3450 3450 3450 3450 3450 3450 3450 3450 3450 HP Compressor 1 7 7 7 7 7 7 7 7 7 Amps RLA Comp 1 25 3 25 3 25 3 25 3 25 3 25 3 9 6 9 6 9 6 Amps LRA Comp 1 1...

Страница 30: ...460 575 575 575 575 575 575 Phase 3 3 3 3 3 3 3 3 3 RPM 3450 3450 3450 3450 3450 3450 3450 3450 3450 HP Compressor 1 7 7 7 7 7 7 7 7 7 Amps RLA Comp 1 9 6 9 6 9 6 7 1 7 1 7 1 7 1 7 1 7 1 Amps LRA Comp...

Страница 31: ...Phase 3 3 3 3 3 3 3 3 3 RPM 3450 3450 3450 3450 3450 3450 3450 3450 3450 HP Compressor 1 7 1 2 7 1 2 7 1 2 7 1 2 7 1 2 7 1 2 7 1 2 7 1 2 7 1 2 Amps RLA Comp 1 28 8 28 8 28 8 28 8 28 8 28 8 12 5 12 5...

Страница 32: ...575 575 Phase 3 3 3 3 3 3 3 3 3 RPM 3450 3450 3450 3450 3450 3450 3450 3450 3450 HP Compressor 1 7 1 2 7 1 2 7 1 2 7 1 2 7 1 2 7 1 2 7 1 2 7 1 2 7 1 2 Amps RLA Comp 1 12 5 12 5 12 5 9 7 9 7 9 7 9 7 9...

Страница 33: ...460 460 460 Phase 3 3 3 3 3 3 3 3 3 RPM 3450 3450 3450 3450 3450 3450 3450 3450 3450 HP Compressor 1 10 10 10 10 10 10 10 10 10 Amps RLA Comp 1 32 6 32 6 32 6 32 6 32 6 32 6 14 8 14 8 14 8 Amps LRA Co...

Страница 34: ...575 575 575 Phase 3 3 3 3 3 3 3 3 3 RPM 3450 3450 3450 3450 3450 3450 3450 3450 3450 HP Compressor 1 10 10 10 10 10 10 10 10 10 Amps RLA Comp 1 14 8 14 8 14 8 11 1 11 1 11 1 11 1 11 1 11 1 Amps LRA C...

Страница 35: ...60 460 460 575 575 575 Phase 3 3 3 3 3 3 3 3 3 RPM 3450 3450 3450 3450 3450 3450 3450 3450 3450 HP Compressor 1 7 7 7 7 7 7 7 7 7 Amps RLA Comp 1 25 3 25 3 25 3 9 6 9 6 9 6 7 1 7 1 7 1 Amps LRA Comp 1...

Страница 36: ...575 Phase 3 3 3 3 3 3 3 3 3 RPM 3450 3450 3450 3450 3450 3450 3450 3450 3450 HP Compressor 1 7 1 2 7 1 2 7 1 2 7 1 2 7 1 2 7 1 2 7 1 2 7 1 2 7 1 2 Amps RLA Comp 1 28 8 28 8 28 8 12 5 12 5 12 5 9 7 9...

Страница 37: ...575 575 575 Phase 3 3 3 3 3 3 3 3 3 RPM 3450 3450 3450 3450 3450 3450 3450 3450 3450 HP Compressor 1 10 10 10 10 10 10 10 10 10 Amps RLA Comp 1 32 6 32 6 32 6 14 8 14 8 14 8 11 1 11 1 11 1 Amps LRA Co...

Страница 38: ...will not disturb owner or neighbors 5 Locate unit so roof runoff water does not pour directly on the unit Provide gutter or other shielding at roof level Do not locate unit in an area where excessive...

Страница 39: ...must be pro vided 5 The unit should be placed on a solid and level roofcurb or platform of adequate strength See Figure 8 6 The location of the unit on the roof should be such as to provide proper acc...

Страница 40: ...ors and clearance to combustible mate rial of 0 for the first 3 feet 0 91 m of discharge duct Clearance to unit top and side is 0 VIII FILTERS This unit is provided with 4 2 20 20 51 mm 508 mm 508 mm...

Страница 41: ...The outdoor coil during heating operation will sweat or run water off The outdoor coil will also run water off during the defrost cycle See Section VI Installation Page 48 for mounting precau tions X...

Страница 42: ...42 Zy...

Страница 43: ...43...

Страница 44: ...44...

Страница 45: ...45 FIGURE 12 FIGURE 13...

Страница 46: ...46 FIGURE 14 FIGURE 15 FIGURE 16...

Страница 47: ...520 0 1 5 8 7 03 7 5 520 21 7 50267 7 21 8 7 520 32 5 6833 6 3 5 57 675 7 21 8 7 77 1 6 3 5 57 21 8 7 520 21 7 50267 7 675 7 21 8 7 77 1 32 5 175 87 2 6 3 5 57 21752 92 7 87 2 3 5 57 21 8 7 187 FIGUR...

Страница 48: ...FLOW DATA Belt drive blower models have motor sheaves set for proper CFM at a typical external static See Airflow Data Tables to determine if adjustments are necessary TABLE 1 COPPER WIRE SIZE AWG 1...

Страница 49: ...n the cool mode fan auto and the room tem perature higher than the thermostat setting A Indoor blower contactor is energized through thermostat contact G B Compressor contactor is energized through th...

Страница 50: ...ing mode TROUBLESHOOTING DEMAND DEFROST During the test mode the coil temperature should be moni tored If the system exits defrost at approximately the termina tion temperature the control is operatin...

Страница 51: ...appropriate wiring diagram included in this manual LED 1 LED 2 Control Board Status OFF OFF No Power ON ON Coil Sensor Failure OFF ON Ambient Sensor Failure FLASH FLASH Normal OFF FLASH Low Pressure...

Страница 52: ...RZHU 6KHDYH 0RWRU 6KHDYH 9 93 93 HOW 7XUQV 2SHQ 530 127 6 DFWRU VKHDYH VHWWLQJV DUH VKRZQ LQ EROG W SH 6HQVLEOH 0 3RZHU N 7RWDO 0 5HVLVWDQFH QFKHV RI DWHU N3D R QRW VHW PRWRU VKHDYH EHORZ PLQLPXP RU P...

Страница 53: ...DYH 9 93 93 HOW 7XUQV 2SHQ 530 127 6 DFWRU VKHDYH VHWWLQJV DUH VKRZQ LQ EROG W SH LUIORZ 5 2 255 7 21 7256 7RWDO 0 6HQVLEOH 0 3RZHU N 5 2 3 5 250 1 5 3 20321 17 5 2 5 6 67 1 HW RLO RUL RQWDO FRQRPL HU...

Страница 54: ...IXVHU 5 51 RQFHQWULF GDSWHU 5 0 OXVK RQFHQWULF LIIXVHU 5 51 RQFHQWULF GDSWHU 5 0 URS 6HQVLEOH 0 3RZHU N 7RWDO 0 5HVLVWDQFH QFKHV RI DWHU N3D R QRW VHW PRWRU VKHDYH EHORZ PLQLPXP RU PD LPXP WXUQV RSHQ...

Страница 55: ...VHU 5 51 RQFHQWULF GDSWHU 5 0 OXVK RQFHQWULF LIIXVHU 5 51 RQFHQWULF GDSWHU 5 0 URS 6HQVLEOH 0 3RZHU N 5HVLVWDQFH QFKHV RI DWHU N3D 7RWDO 0 R QRW VHW PRWRU VKHDYH EHORZ PLQLPXP RU PD LPXP WXUQV RSHQ VK...

Страница 56: ...HU 5 DPSHU 2SHQ RQFHQWULF LIIXVHU 5 51 LIIXVHU 5 0 OXVK RQFHQWULF LIIXVHU 5 51 LIIXVHU 5 0 URS 5HVLVWDQFH QFKHV RI DWHU N3D 7RWDO 0 R QRW VHW PRWRU VKHDYH EHORZ PLQLPXP RU PD LPXP WXUQV RSHQ VKRZQ 5H...

Страница 57: ...WRU 3 ORZHU 6KHDYH 0RWRU 6KHDYH 9 93 93 HOW 7XUQV 2SHQ 530 127 6 DFWRU VKHDYH VHWWLQJV DUH VKRZQ LQ EROG W SH 5 2 3 5 250 1 5 3 5 2 255 7 21 7256 LUIORZ HW RLO RUL RQWDO FRQRPL HU 5 DPSHU 2SHQ RQFHQWU...

Страница 58: ...9 25 25 33 77 20 6 23 8 72 76 80 90 80 90 26 30 30 30 46 46 60 70 60 70 DD15CP 1 10 8 14 4 36 84 49 13 30 0 34 6 84 89 90 100 100 100 38 44 40 45 46 46 60 70 60 70 DD20CP 2 14 9 19 8 50 83 67 55 41 3...

Страница 59: ...36 84 49 13 30 0 34 6 86 91 90 100 100 110 38 44 40 45 48 48 60 70 60 70 DD20CP 2 14 9 19 8 50 83 67 55 41 3 47 6 100 108 110 110 110 110 52 60 60 60 48 48 60 70 60 70 DD30CP 2 21 6 28 8 73 69 98 25...

Страница 60: ...8 14 4 36 84 49 13 30 0 34 6 94 100 100 110 110 110 38 44 40 45 57 57 70 80 70 80 DD20CP 2 14 9 19 8 50 83 67 55 41 3 47 6 108 116 125 125 125 125 52 60 60 60 57 57 70 80 70 80 DD30CP 2 21 6 28 8 73 6...

Страница 61: ...84 49 13 30 0 34 6 91 96 100 110 100 110 38 44 40 45 53 53 60 80 60 80 DD20CP 2 14 9 19 8 50 83 67 55 41 3 47 6 105 113 110 110 125 125 52 60 60 60 53 53 60 80 60 80 DD30CP 2 21 6 28 8 73 69 98 25 60...

Страница 62: ...8 8 98 25 34 6 63 70 70 44 45 20 25 25 DD40DNV 2 39 6 135 10 47 6 80 90 90 60 60 20 25 25 RHPDZS090ADC No Heat 20 25 25 20 25 25 DD10DNV 1 9 9 33 77 11 9 35 40 40 15 15 20 25 25 DD15DNV 1 14 4 49 13 1...

Страница 63: ...DNV 1 9 9 33 77 11 9 37 40 45 15 15 23 30 30 DD15DNV 1 14 4 49 13 17 3 44 50 50 22 25 23 30 30 DD20DNV 2 19 8 67 55 23 8 52 60 60 30 30 23 30 30 DD30DNV 2 28 8 98 25 34 6 66 70 70 44 45 23 30 30 DD40D...

Страница 64: ...DNV 1 9 9 33 77 11 9 42 45 50 15 15 27 35 40 DD15DNV 1 14 4 49 13 17 3 49 60 60 22 25 27 35 40 DD20DNV 2 19 8 67 55 23 8 57 60 60 30 30 27 35 40 DD30DNV 2 28 8 98 25 34 6 70 80 80 44 45 27 35 40 DD40D...

Страница 65: ...DNV 1 9 9 33 77 11 9 40 45 45 15 15 25 30 35 DD15DNV 1 14 4 49 13 17 3 47 50 50 22 25 25 30 35 DD20DNV 2 19 8 67 55 23 8 55 60 60 30 30 25 30 35 DD30DNV 2 28 8 98 25 34 6 68 80 80 44 45 25 30 35 DD40D...

Страница 66: ...14 20 20 RHPDZS090AYB No Heat 15 20 20 15 20 20 RHPDZS090AYC No Heat 15 20 20 15 20 20 RHPDZS090AYF No Heat 14 20 20 14 20 20 RHPDZS090AYG No Heat 15 20 20 15 20 20 RHPDZS090AYH No Heat 15 20 20 15 20...

Страница 67: ...Incorrect voltage At compressor terminals voltage must be 10 of nameplate marking when unit is operating Defective overload protector Replace check for correct voltage Refrigerant undercharge Add ref...

Страница 68: ...TO INSTALL LOW AMBIENT ACCESSORY CRANKCASE HEATER ATTACHED TO CC1 L2 AND CC1 AUX 52 COMPRESSOR MOTOR THERMALLY PROTECTED ALL 3 PHASE MODELS ARE PROTECTED UNDER PRIMARY SINGLE PHASE CONDITIONS TRANSFOR...

Страница 69: ...SURE SWITCH OUTSIDE AIR SENSOR OUTDOOR COIL TEMPERATURE SENSOR OUTDOOR FAN MOTOR PLUG POWER TRANSFORMER RETURN AIR SENSOR RUN CAPACITOR ROOFTOP UNIT CONTROL REVERSING VALVE SPARK ELECTRODE TERMINAL BL...

Страница 70: ...70 T2 T3 T1 COMP AUX 4 5 6 2 1 3 W FIGURE 22...

Страница 71: ...DISCONNECT SWITCH DEFROST RELAY FLAME SENSOR FAN PROVING FREEZE SENSOR FREEZE STAT GROUND FAULT CONVENIENCE OUTLET GROUND LUG GROUND HIGH PRESSURE CONTROL INDOOR BLOWER MOTOR INDUCED DRAFT MOTOR INTEG...

Страница 72: ...STALL LOW AMBIENT ACCESSORY CRANKCASE HEATER ATTACHED TO CC1 L2 AND CC1 AUX 52 COMPRESSOR MOTOR THERMALLY PROTECTED ALL 3 PHASE MODELS ARE PROTECTED UNDER PRIMARY SINGLE PHASE CONDITIONS TRANSFORMER F...

Страница 73: ...POWER SUPPLY L3 L2 L1 DISC OPTIONAL LAC OPT AR OPT 1 2 DR CCH AUX SW GND 1 3 L1 L2 L3 T1 T2 T3 IBM BC 10k ohms OAT 10k ohms OCT DR AR RV DR 6 4 BC 24 VAC US ALARM CODES CODE Description FAULT LEVEL 0...

Страница 74: ...EMOVE J3 AT DR 2 TO INSTALL LOW AMBIENT ACCESSORY CRANKCASE HEATER ATTACHED TO CC1 L2 AND CC1 AUX 52 COMPRESSOR MOTOR THERMALLY PROTECTED ALL 3 PHASE MODELS ARE PROTECTED UNDER PRIMARY SINGLE PHASE CO...

Страница 75: ...RC2 OFM1 OFM2 L1 L2 L3 T1 T2 T3 CC COMP POWER SUPPLY L3 L2 L1 DISC OPTIONAL VFD S LAC OPT AR OPT 1 2 DR CCH AUX SW GND 1 3 US 10k ohms OAT 10k ohms OCT DR AR RV DR 6 4 24 VAC ALARM CODES CODE Descrip...

Страница 76: ...76 PR T2 T3 T1 COMP AUX 4 5 6 2 1 3 FIGURE 28...

Страница 77: ...ENSOR DISCONNECT SWITCH DEFROST RELAY FLAME SENSOR FAN PROVING FREEZE SENSOR FREEZE STAT GROUND FAULT CONVENIENCE OUTLET GROUND LUG GROUND HIGH PRESSURE CONTROL INDOOR BLOWER MOTOR INDUCED DRAFT MOTOR...

Страница 78: ...78 PR T2 T3 T1 COMP VFD AUX 4 5 6 2 1 3 FIGURE 30...

Страница 79: ...CT SWITCH DEFROST RELAY FLAME SENSOR FAN PROVING FREEZE SENSOR FREEZE STAT GROUND FAULT CONVENIENCE OUTLET GROUND LUG GROUND HIGH PRESSURE CONTROL INDOOR BLOWER MOTOR INDUCED DRAFT MOTOR INTEGRATED FU...

Страница 80: ...325 350 425 475 525 450 200 40 0 60 0 80 0 20 0 100 0 140 0 160 0 180 0 200 0 220 0 120 0 80 70 60 SYSTEM CHARGE CHART HEATING 92 106139 04 00 CAUTION 1 RETURN AIR TEMPERATURE MUST BE WITHIN COMFORT C...

Страница 81: ...81 FIGURE 33...

Страница 82: ...0 200 0 210 0 220 0 CAUTION 1 RETURN AIR TEMPERATURE MUST BE WITHIN COMFORT CONDITIONSBEFORE FINAL REFRIGERANT CHECK INSTRUCTIONS 2 MEASURE PRESSURE AT COMPRESSOR SUCTIONAND L IOUID 3 MEASURE OUTDOOR...

Страница 83: ...83...

Страница 84: ...ct improvement Rheem reserves the right to make changes without notice Rheem Heating Cooling Water Heating P O Box 17010 Fort Smith Arkansas 72917 www rheem com Rheem Canada Ltd Lt e 125 Edgeware Road...

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