background image

14

RVS/Heat Stage 2

O/B W2

Heat Stage 1

W/W1

Compressor Low

Y1

Compressor High

Y/Y2

Fan

G

24VAC Hot Heating

Rh

24VAC Hot Cooling

Rc

Dry Contact 1

D1

Dry Contact 2

D2

24VAC Common

C

Humidify

HUM

Outdoor Air Temp

OAT

Remote Room Sensor

RRS

OAT/RRS Com

OAT/RRS

Outdoor Sensor *

Humidifier Solenoid 

Valve  *

Remote Room 

Sensor *

O

Y1

W1

G

W2

C

Y2

R

W1

Y1

O

Y/Y2

R

C

DH

 REMOVE J2
JUMPER FOR
HEAT STAGING

REMOVE J1 FOR
DEHUMIDIFY
MODES

2 STAGE 

HEAT PUMP

THERMIDISTAT

FAN 

COIL

A08055

Fig. 10 -- Edge Thermidistat Models TP--PRH--01 or TP--NRH--01)

Wiring with 2--Stage Heat Pump (non--communicating)

O

O/B W2

W2

W/W1

W/W1

W2

 *

Heat/Cool Stage 1

Y1 / W2

Y1

Heat/Cool Stage 2

Y/Y2

Y/Y2

Y/Y2

Fan

G

G

24VAC Hot Heating

Rh

R

R

24VAC Hot Cooling

Rc

Dry Contact 1

D1

Dry Contact 2

D2

DHUM

24VAC Common

C

COM

C

Humidify

HUM

Outdoor Air Temp

OAT

Remote Room Sensor

RRS

OAT/RRS Com

SRTN

Outdoor Sensor *

Humidifier Solenoid 

Valve  *

Remote Room 

Sensor *

Variable Speed

Furnace

Thermidistat

2-Stage

Heat Pump

*  Indicates connection may not be required / available.

Heat Stage 3 (furnace)

RVS Cooling

A09337

Fig. 11 -- Thermidistat Model TP--PRH--01 or TP--NRH--01 with

Variable Speed Furnace and 2--Stage Heat Pump

(non--communicating)

D

C

B

A

User Interface

D

C

B

A

D

C

B

A

Communicating HP

OA

T

R

Y

O

W

C

HUM

C

Humidifier

24v

ac

Furnace or Fan Coil

A08091

Fig. 12 -- Infinity Furnace or Fan Coil Wiring with Communicating 2--Stage HP

  LEGEND

 

24v Factory Wiring

 

24v Field Wiring

 

Field Splice Connection

A09306

25H

PA

6

Summary of Contents for 25HPA6

Page 1: ...mation 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 these 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 hazards which could result...

Page 2: ... presale literature There can be no deviation Consult the Service Manual Air Conditioners and Heat Pumps Using Puron Refrigerant to obtain required unit changes for specific applications and for R 22 retrofit Check Equipment and Job Site Unpack Unit Move to final location Remove carton taking care not to damage unit Inspect Equipment File claim with shipping company prior to installation if shipme...

Page 3: ...IMPORTANT Flow arrow must point toward outdoor unit Make Piping Connections WARNING PERSONAL INJURY AND UNIT DAMAGE HAZARD Failure to follow this warning could result in personal injury or death Relieve pressure and recover all refrigerant before system repair or final unit disposal Use all service ports and open all flow control devices including solenoid valves CAUTION UNIT DAMAGE HAZARD Failure...

Page 4: ...EQUIRED FOR LONG LINE APPLICATIONS Over 80 ft 24 38 m REQUIRED FOR SEA COAST APPLICATIONS Within 2 miles 3 22 km Crankcase Heater Standard Standard Standard Evaporator Freeze Protection Standard with Infinityt Control Low Ambient not allowed with non communicating thermostat No No Liquid Line Solenoid Valve No Yes No Low Ambient Control Standard with Infinity Control Low ambient not allowed with n...

Page 5: ...frigerant tubing and indoor coil are now ready for leak testing This check should include all field and factory joints Evacuate Refrigerant Tubing and Indoor Coil CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation Never use the system compressor as a vacuum pump Refrigerant tubes and indoor coil should be evacuated using the recommended d...

Page 6: ...ovide blower operation to match the capacities of the compressor during high and low stage cooling operation Tap selections on the furnace control board enable the installing technician to select the proper airflows for each stage of cooling Below is a brief summary of the furnace airflow configurations 1 The Y2 call for high stage cooling energizes the Cool tap on the control board The grey wire ...

Page 7: ...f 2 minutes in low stage adjust the set point at least 5 F 2 8 C below room ambient System Functions And Sequence Of Operation The 25HPA6 models utilize either an Infinity Communicating User Interface or a 2 stage cooling indoor thermostat With a call for first stage cooling the outdoor fan and low stage compressor are energized If low stage cannot satisfy cooling demand high stage is energized by...

Page 8: ...ing of the by pass port is controlled by an internal electrically operated solenoid The modulated scroll uses a single step of unloading to go from full capacity to approximately 67 capacity A single speed high efficiency motor continues to run while the scroll modulates between the two capacity steps Modulation is achieved by venting a portion of the gas in the first suction pocket back to the lo...

Page 9: ...nt temperature The outdoor fan output ODF will remain off for 20 seconds after termination This delay will allow time for the system to capture the heat from the outdoor coil and reduce the steam cloud effect that may occur on transition from defrost to heating cycle The outdoor fan output OFF delay of 20 seconds may be defeated to enable the fan to energize immediately at the time of termination ...

Page 10: ...ot use chart to adjust refrigerant charge NOTE In heating mode check refrigerant charge only when pressures are stable If in doubt remove charge and weigh in correct refrigerant charge NOTE When charging is necessary during heating season charge must be weighed in accordance with unit rating plate 0 6 oz ft 17 74 g m of 3 8 in liquid line above or below 15 ft 4 57 m respectively EXAMPLE To calcula...

Page 11: ...is no 230v at the compressor contactor s when the indoor unit is powered and cooling or heating demand exists the appropriate fault code is displayed Verify the disconnect is closed and 230v wiring is connected to the unit Compressor Voltage Sensing The control board input terminals labeled VS and L2 see Fig 6 are used to detect compressor voltage status and alert the user of potential problems Th...

Page 12: ...ating conditions The comparison is S In cooling if the outdoor air sensor indicates 10_F 5 6_C warmer than the coil sensor or the outdoor air sensor indicates 20_F 11_C cooler than the coil sensor the sensors are out of range S In heating if the outdoor air sensor indicates 35_F 19 4_C warmer than the coil sensor or the outdoor air sensor indicates 10_F 5 6_C cooler than the coil sensor the sensor...

Page 13: ...nect is closed and 230v wiring is connected to the unit Outdoor Air Temp Sensor Fault 53 Outdoor air sensor not reading or out of range Ohm out sensor and check wiring Outdoor Coil Sensor Fault 55 Coil sensor not reading or out of range Ohm out sensor and check wiring Thermistors out of range 56 Improper relationship between coil sensor and outdoor air sensor Ohm out sensors and check wiring Low S...

Page 14: ...2 Y1 Heat Cool Stage 2 Y Y2 Y Y2 Y Y2 Fan G G 24VAC Hot Heating Rh R R 24VAC Hot Cooling Rc Dry Contact 1 D1 Dry Contact 2 D2 DHUM 24VAC Common C COM C Humidify HUM Outdoor Air Temp OAT Remote Room Sensor RRS OAT RRS Com SRTN Outdoor Sensor Humidifier Solenoid Valve Remote Room Sensor Variable Speed Furnace Thermidistat 2 Stage Heat Pump Indicates connection may not be required available Heat Stag...

Page 15: ...ing into suction line with compressor operating 10 Manifold sets should be 700 psig high side and 180 psig low side with 550 psig low side retard 11 Use hoses with 700 psig service pressure rating 12 Leak detectors should be designed to detect HFC refrigerant 13 Puron refrigerant as with other HFCs is only compatible with POE oils 14 Vacuum pumps will not remove moisture from oil 15 Do not use liq...

Page 16: ...10 W Morris St S Indianapolis IN 46231 Printed in U S A Edition Date 05 09 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Catalog No 25HPA6 1SI Replaces New 25HPA6 ...

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