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BI-FLOW
TXV/
CHECK
VALVE**

INDOOR COIL

COMPRESSOR

4-WAY
REVERSING
VALVE*

SUCTION
ACCUMULATOR

OUTDOOR
COIL

COOLING CYCLE FLOW

HEATING CYCLE FLOW

FIELD CONNECTED LINE

LIQUID
SENSOR

**NOTE: The indoor coil is shipped with an orifice.
The orifice must be replaced with a TXV kit.

CHECK VALVE

FILTER DRYER

(solid core)

* SHOWN IN COOLING POSITION

ORIFICE (heating)

FIGURE 13 - FLOW DIAGRAM - 060

—(10 & 12 SEER Single Phase)

INDOOR COIL

COMPRESSOR

4-WAY

REVERSING

VALVE*

SUCTION

ACCUMULATOR

OUTDOOR

COIL

COOLING CYCLE FLOW

HEATING CYCLE FLOW

* SHOWN IN COOLING POSITION

FIELD CONNECTED LINE

FIELD

CONNECTED LINE

LIQUID

SENSOR

Non Adjustable Thermal

Expansion Valve (Heating)

FILTER DRYER

(solid core).

Non Adjustable Thermal

Expansion Valve (Cooling)

FIGURE 14 - FLOW DIAGRAM - 024 thru 048

—(14 SEER)

515.16-N3Y

Unitary Products Group

Содержание E1RA Series

Страница 1: ...or in the Directory of Certified Unitary Heat Pumps published by the Air Conditioning and Refrigeration Institute Using unmatched com ponents may not only affect the performance of the system but may also void the warranty of the equipment Do not install any coil in a furnace which is to be operated during the heating season without attaching the refrigerant lines to the coil Allow ing the coil ch...

Страница 2: ...due to wind chill effect Provide ample clearance from shrubs to allow adequate air to pass across the outdoor coil without leaves or branches being pulled into the coil The outdoor unit may never go into the defrost cycle even with minor frost build up during the daytime in some areas of the United States if it is placed on the south side of the residence with no shade However the heat pump may lo...

Страница 3: ...ubing must be done with care to obtain reliable trouble free operation 1 Selection of proper refrigerant tubing grade and size 2 Refrigerant line routing cutting and fitting 3 Insulating the vapor line 4 Proper preparation of joint connections 5 Reassembling cleaning and brazing the joint connections 6 Connecting the refrigerant lines to the indoor coil and outdoor unit 7 Pressure leak test all jo...

Страница 4: ... Recommendations and Refrigerant Line Length for vapor and liquid line sizing cali bration of liquid line pressure loss or gain determination of vapor line velocity elevation limitations orifice connections system charging traps etc Total line lengths are limited to 75 feet due to the storage capacity of the accumulator Systems with total line lengths over 50 feet must be provided with 1 Low Volta...

Страница 5: ...t for volts frequency phase maxi mum fuse size and minimum branch circuit ampacity Refer to the wiring diagram inside the unit control box cover before connecting to power supply 1 The line voltage service wiring for the outdoor unit must include a disconnect switch located within sight of the outdoor unit 2 Use the correct size fuse or circuit breaker as listed on the unit rating plate and data s...

Страница 6: ...LTAGE BOX FAN MOTOR PLUG FIGURE 4 OUTDOOR UNIT CONTROL BOX SINGLE PHASE 10 12 SEER CONTACTOR DUAL RUN FAN CAPACITOR GROUND LUG ADJUSTABLE HIGH VOLTAGE CONDUIT PLATE DEFROST CONTROL BOARD FINGERED BUSHING LOW VOLTAGE BOX FAN MOTOR PLUG START RELAY START CAPACITOR FIGURE 5 OUTDOOR UNIT CONTROL BOX SINGLE PHASE 14 SEER Model 515 16 N3Y 6 Unitary Products Group ...

Страница 7: ...FIGURE 6 OUTDOOR UNIT CONTROL BOX THREE PHASE 10 SEER 036 and 048 Models FIGURE 7 OUTDOOR UNIT CONTROL BOX THREE PHASE 10 SEER 060 Model 515 16 N3Y Unitary Products Group 7 ...

Страница 8: ...T D O O R U N I T T H E R M O S T A T I N D O O R U N I T P O W E R W I R I N G 2 0 8 2 3 0 3 6 0 4 6 0 3 6 0 P O W E R W I R I N G 2 4 V C O N T R O L W I R I N G N E C C L A S S 2 L O W V O L T A G E T E R M I N A L B L O C K 3 4 I N A I R H A N D L E R W I T H E L E C T R I C H E A T 3 C h e c k t h e l o w v o l t a g e t e r m i n a l b l o c k o n t h e i n d o o r u n i t f o r t h e a c t ...

Страница 9: ...EFROST SAFETY LOCKOUT MODE The lock out control opens the circuits to the compressor contactor stopping the compressor in response to 400 High Pressure limit switch opening for more than one second The compressor will remain off until the high pressure switch re closes During the period the switch is open the control will provide a pulsed output at the X terminal to indicate the lock out condition...

Страница 10: ...ll remain in defrost until the defrost thermostat opens or 10 minutes expires If the thermostat is open when the short is removed the heat pump will exit defrost immediately 14 SEER WITH DEMAND DEFROST SAFETY LOCKOUT MODE The lock out control opens the circuits to the compressor contactor stopping the compressor in response to the high pressure 400 limit switch or the high discharge temperature sw...

Страница 11: ... DRYER solid core SHOWN IN COOLING POSITION ORIFICE heating FIGURE 13 FLOW DIAGRAM 060 10 12 SEER Single Phase INDOOR COIL COMPRESSOR 4 WAY REVERSING VALVE SUCTION ACCUMULATOR OUTDOOR COIL COOLING CYCLE FLOW HEATING CYCLE FLOW SHOWN IN COOLING POSITION FIELD CONNECTED LINE FIELD CONNECTED LINE LIQUID SENSOR Non Adjustable Thermal Expansion Valve Heating FILTER DRYER solid core Non Adjustable Therm...

Страница 12: ...llow the unit to go into a defrost cycle if the compressor is operating When the short is removed the heat pump will remain in defrost until the coil temperature reaches 75 F or 14 minutes expires If the liquid coil temperature happens to be above 75 F the short must be maintained to keep the unit in a defrost cycle It should be used since the unit WILL REMAIN in defrost until the short is removed...

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