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Allied 4SCU20LX, Руководство по установке

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507523-01

Page 5 of 19

Issue  1946

SENSING

LINE

TWO-PIECE PATCH PLATE

(UNCASED COIL ONLY)

VAPOR

LINE

DISTRIBUTOR

ASSEMBLY

DISTRIBUTOR

TUBES

LIQUID

LINE

MALE EQUALIZER

LINE FITTING

EQUALIZER

LINE

CHECK

EXPANSION

VALVE

TEFLON®

RING

STUB END

TEFLON

®

RING

SENSING BULB

LIQUID LINE

ORIFICE

HOUSING

LIQUID LINE

ASSEMBLY WITH

BRASS NUT

Figure 3. Remove Existing Expansion Valve 

(uncased coil shown)

Flushing Line Sets

If the unit will be installed in an existing system that uses 

an indoor unit or line sets charged with R-22 refrigerant, 

installer must perform the following flushing procedure.

NOTE: 

Existing system components (including line set 

and indoor coil) must be an AHRI match with the unit in 

order to fulfill unit warranty requirements.

Refrigerant must be reclaimed in accordance with 

national and local codes.

 WARNING

Do 

NOT

 attempt to flush and re-use existing line sets 

or indoor coil when the system contains contaminants 

(i.e., compressor burn out).

 CAUTION

“Clean refrigerant” is any refrigerant in a system that 

has not had compressor burnout. If the system has 

experienced burnout, it is recommended that the 

existing line set and indoor coil be replaced.

NOTE

In lieu of R-410A, an industry-standard flushing agent 

may also be used.

NOTE

LOW

HIGH

EXISTING

INDOOR

UNIT

GAUGE

MANIFOLD

CYLINDER CONTAINING

CLEAN R-410A TO  BE

USED FOR FLUSHING

(Positioned to deliver liquid

refrigerant)

LIQUID LINE SERVICE

VALVE

INLET

DISCHARGE

TANK

RETURN

CLOSED

OPENED

RECOVERY

CYLINDER

RECOVERY MACHINE

NEW

OUTDOOR

UNIT

VAPOR LINE

SERVICE VALVE

VAPO
R

LIQUID

1

A

B

C

D

A

Cylinder with clean R-410A (positioned to deliver liquid refrigerant) to the 

vapor service valve.

B

Refrigerant gauge set (low side) to the liquid line valve.

C

Refrigerant gauge set center port to inlet on the recovery machine with 

an empty recovery tank connected to the gauge set.

D

Connect recovery tank to recovery machine per machine instructions.

Figure 4.  

1.  Connect gauges and equipment as shown in Figure 4.

2.  Set the recovery machine for liquid recovery and start 

the recovery machine. Open the gauge set valves to 

allow the recovery machine to pull a vacuum on the 

existing system line set and indoor unit coil.

3.  Position the cylinder of clean R-410A for delivery of 

liquid refrigerant and open its valve to allow liquid 

refrigerant to flow into the system through the vapor 

line valve. Allow the refrigerant to pass from the 

cylinder and through the line set and the indoor unit 

coil before it enters the recovery machine.

4.  After all of the liquid refrigerant has been recovered, 

switch the recovery machine to vapor recovery so 

that all of the R-410A vapor is recovered. Allow the 

recovery machine to pull the system down to 0.

5.  Close the valve on the inverted R-410A drum and the 

gauge set valves. Pump the remaining refrigerant out 

of the recovery machine and turn the machine off.

Содержание 4SCU20LX

Страница 1: ...e personal injury or death WARNING ELECTRICAL SHOCK HAZARD Risk of electrical shock Disconnect all remote power supplies before installing or servicing any portion of the system Failure to disconnect power supplies can result in property damage personal injury or death WARNING Sharp metal edges can cause injury When installing the unit use care to avoid sharp edges WARNING Read this entire instruc...

Страница 2: ... unit away from windows patios decks etc where unit operation sounds may disturb customer Leave some slack between structure and unit to absorb vibration Place a sound absorbing material such as Isomode under the unit if it will be installed in a location or position that will transmit sound or vibration to the living area or adjacent buildings In heavy snow areas do not locate the unit where drif...

Страница 3: ...ould be unobstructed by a wall or other barrier Table 2 Clearances 30 around Control Box 24 6 NOTE See Table 2 for specific minimum clearance guidelines Figure 2 DO LOCATE THE UNIT With proper clearances on sides and top of unit On a solid level foundation or pad unit must be level to within 1 4 in ft per compressor manufacturer specifications To minimize refrigerant line lengths DO NOT LOCATE THE...

Страница 4: ... important for proper system operation and reliability If the drier is shipped loose it must be installed by the installer in the field Unit warranty will be void if the drier is not installed Installation of Line Sets DO NOT fasten liquid or suction lines in direct contact with the floor or ceiling joist Use an insulated or suspension type of hanger Keep both lines separate and always insulate th...

Страница 5: ...E USED FOR FLUSHING Positioned to deliver liquid refrigerant LIQUID LINE SERVICE VALVE INLET DISCHARGE TANK RETURN CLOSED OPENED RECOVERY CYLINDER RECOVERY MACHINE NEW OUTDOOR UNIT VAPOR LINE SERVICE VALVE VAPOR LIQUID 1 A B C D A Cylinder with clean R 410A positioned to deliver liquid refrigerant to the vapor service valve B Refrigerant gauge set low side to the liquid line valve C Refrigerant ga...

Страница 6: ...Shown Sensing bulb insulation is required if mounted external to the coil casing sensing bulb installation for bulb positioning STUB END TEFLON RING LIQUID LINE ASSEMBLY WITH BRASS NUT DISTRIBUTOR ASSEMBLY 3 Install one of the provided Teflon rings around the stubbed end of the check expansion valve and lightly lubricate the connector threads and expose surface of the Teflon ring with refrigerant ...

Страница 7: ...ssure side to liquid line service valve service port B Connect gauge set center port to bottle of nitrogen with regulator C Remove core from valve in vapor line service port to allow nitrogen to escape NITROGEN HIGH LOW USE REGULATOR TO FLOW NITROGEN AT 1 TO 2 PSIG B A C WHEN BRAZING LINE SET TO SERVICE VALVES POINT FLAME AWAY FROM SERVICE VALVE Flow regulated nitrogen at 1 to 2 psig through the l...

Страница 8: ...VES POINT FLAME AWAY FROM SERVICE VALVE PREPARATION FOR NEXT STEP 7 WRAP SERVICE VALVES To help protect service valve seals during brazing wrap water saturated cloths around service valve bodies and copper tube stubs Use additionalwater saturated cloths underneath the valve body to protect the base paint 4 FLOW NITROGEN Flow regulated nitrogen at 1 to 2 psig through the refrigeration gauge set int...

Страница 9: ...he valve on the high side of the manifold gauge set in order to pressurize the line set and the indoor unit E After a few minutes open one of the service valve ports and verify that the refrigerant added to the system earlier is measurable with a leak detector F After the line set has been connected to the indoor and outdoor units check the line set connections and indoor unit for leaks Use the fo...

Страница 10: ...uid refrigerant Open the manifold gauge valve 1 to 2 psig in order to release the vacuum in the line set and indoor unit G Perform the following Close manifold gauge valves Shut off HFC 410A cylinder Reinstall service valve cores by removing manifold hose from service valve Quickly install cores with core tool while maintaining a positive system pressure Replace stem caps and finger tighten them t...

Страница 11: ...ench with a hex head extension to back the stem out counterclockwise as far as it will go Use a 3 16 hex head extension for liquid line service valves and a 5 16 extension for suction line service valves 3 Replace the stem cap Tighten finger tight then tighten an additional 1 6 turn To Close Liquid or Suction Line Service Valve 1 Remove the stem cap with an adjustable wrench 2 Use a service wrench...

Страница 12: ...ructions shipped with room thermostat Generally the thermostat should not be exposed to sunlight drafts or vibration and should not be mounted on exterior walls Low voltage wiring must be separated from high voltage wiring WARNING Low voltage connections should be in accordance to the wiring diagram Alarms Alarm information is provided on the outdoor unit access panel and in the Comfort Sync Wi Fi...

Страница 13: ... C Terminal OUTDOOR UNIT PROVIDED RAST 6 PIN CONNECTOR CONNECTS TO RAST 6 PIN CONNECTOR ROUTE CONTROL WIRING THROUGH GROMMET AND SECURE WITH CABLE TIE GROMMET AND CABLE TIE USE WATERTIGHT CONDUIT FOR HIGH VOLTAGE CONNECT CONDUIT TO CUTOUT AND ROUTE HIGH VOLTAGE WIRING INDOOR CONTROL Thermostat Figure 7 Control Wiring ...

Страница 14: ...Page 14 of 19 507523 01 Issue 1946 Figure 8 Control Board 7 SEGMENT DISPLAY PUSH BUTTON ...

Страница 15: ...t A blank space is provided on the unit rating plate to list the actual field charge Table 4 Refrigerant Charge Adjustment Liquid Line Set Diameter Oz Per 5 ft adjust from 15 ft line set 3 8 in 3 oz per 5 ft or 0 6 oz per 1 ft If line length is greater than 15 ft add this amount If line length is less than 15 ft remove this amount Mineral oils are not compatible with R 410A If oil must be added it...

Страница 16: ...nser Coils Grass cuttings leaves dirt dust lint from clothes dryers and foliage from trees can be drawn into coils by movement of the air Clogged condenser coils will lower the efficiency of your unit and could cause damage to the condenser Periodically debris should be brushed from the condenser coils Use a soft bristle brush with light pressure only DO NOT damage or bend condenser coil fins Dama...

Страница 17: ...anty replacement parts are required the warranty must be processed through a qualified distribution location Homeowner Information ELECTRICAL SHOCK HAZARD Turn OFF electric power to unit before performing any maintenance or removing panels or doors FAILURE TO DO SO COULD RESULT IN BODILY INJURY OR DEATH WARNING Thermostat Operation The wall mounted thermostat controls your air conditioner The ther...

Страница 18: ...T GRAY GRAY GRAY GRAY RED GRAY RED GRAY RED BLACK YELLOW BLUE BLACK THERMAL PROTECTION SWITCH GRAY GRAY RED BLACK BLUE BROWN NOTES 1 NOTE FOR USE WITH COPPER CONDUCTORS ONLY REFER TO UNIT RATING PLATE FOR MINIMUM CIRCUIT AMPICITY AND MAXIMUM OVERCURRENT PROTECTION SIZE 2 WARNING ELECTRIC SHOCK HAZARD CAN CAUSE INJURY OR DEATH UNIT MUST BE GROUNDED IN ACCORDANCE WITH NATIONAL AND LOCAL CODES 3 REFE...

Страница 19: ...IMUM CIRCUIT AMPICITY AND MAXIMUM OVERCURRENT PROTECTION SIZE 2 WARNING ELECTRIC SHOCK HAZARD CAN CAUSE INJURY OR DEATH UNIT MUST BE GROUNDED IN ACCORDANCE WITH NATIONAL AND LOCAL CODES 3 REFER TO COMPRESSOR IN UNIT FOR ACTUAL TERMINAL ARRANGEMENT 4 NOTE IF ANY WIRE IN THE APPLIANCE IS REPLACED IT MUST BE REPLACED WITH WIRE OF LIKE SIZE RATING INSULATION THICKNESS AND TERMINATION U W V 1 2 GRAY GR...

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