Allied ML14XP1-036 설치 지침 매뉴얼 - 페이지 11

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STEP 4 – ELECTRICAL – (Continued) – High Voltage and Field Control Wiring

The following illustration provides an example of control wiring connections when using a standard thermostat.

HIGH VOLTAGE / GROUND WIRES

Any excess high voltage field wiring should be trimmed and secured away from any low voltage field wiring. To facilitate a conduit, a cutout is

located in the bottom of the control panel. Connect conduit to the control panel using a proper conduit fitting.

TYPICAL CONTROL WIRING

Install low voltage wiring from outdoor to indoor unit and from thermostat to indoor unit as illustrated.

A - Run 24VAC control wires through hole with grommet.

B - Make 24VAC thermostat wire connections to CMC1.

WIRE RUN LENGTH

LESS THAN 100' (30 METERS)

MORE THAN 100' (30 METERS) 16

HIGH VOLTAGE

FIELD WIRING

Low Voltage Wiring

Thermostat

POWER

COMMON

1ST. STAGE AUX.

HEAT

INDOOR BLOWER

(SOME CONNECTIONS MAY NOT APPLY. REFER

TO SPECIFIC THERMOSTAT AND INDOOR UNIT.)

NOTE - Wire tie provides low voltage wire strain relief and maintains separation of field-installed low and high voltage circuits.

STEP 5 – UNIT START-UP

IMPORTANT

If unit is equipped with a crankcase heater, it should

be energized 24 hours before unit start-up to prevent

compressor damage as a result of slugging.

1 - Rotate fan to check for binding.

2 - Inspect all factory- and field-installed wiring for

loose connections.

3 - After evacuation is complete, open the liquid line

and vapor line service valve stems to release the

refrigerant charge (contained in outdoor unit) into

the system.

4 - Replace the stem caps and tighten to the value

listed in table 2.

5 - Check voltage supply at the disconnect switch. The

voltage must be within the range listed on the unit's

nameplate. If not, do not start the equipment until

you have consulted with the power company and

ROUTING HIGH VOLTAGE, GROUND AND CONTROL WIRING

AWG# INSULATION TYPE

TEMPERATURE RATING

35ºC MINIMUM.

LOW VOLTAGE

FACTORY

FIELD WIRING

WIRING

Outdoor Unit

Indoor Unit

POWER

COMMON

1ST. STAGE AUX.

HEAT

REVERSING VALVE

COMPRESSOR

NOTE - Do not bundle any excess 24VAC control wires inside control panel.

NOTE - For proper voltages, select thermostat wire (control wires) gauge per

table below.

Low Voltage Wiring (with Auxiliary Heat)

Thermostat

POWER

COMMON

EMERGENCY

HEAT

1ST. STAGE AUX.

HEAT

INDOOR BLOWER

(SOME CONNECTIONS MAY NOT APPLY. REFER TO

SPECIFIC THERMOSTAT AND INDOOR UNIT.)

FIGURE 11

the voltage condition has been corrected.

6 - Connect manifold gauge set for testing and

charging.

7 - Set the thermostat for a cooling demand. Turn

on power to the indoor indoor unit and close the

outdoor unit disconnect switch to start the unit.

8 - Recheck voltage while the unit is running. Power

must be within range shown on the unit nameplate.

9 - Check system for sufficient refrigerant using the

procedures outlined under Checking Refrigerant

Charge.

OPERATING MANIFOLD GAUGE SET AND SERVICE

VALVES

The liquid and vapor line service valves are used for re-

moving refrigerant, flushing, leak testing, evacuating,

checking charge and charging.

Each valve is equipped with a service port which has a

factory-installed valve stem. Figures 15 and 16 provide

information on how to access and operate both angle- and

ball-type service valves.

Page 11

Outdoor Unit

Indoor Unit

POWER

COMMON

EMER.

HEAT

RELAY

OUTDOOR

T'STAT

1ST. STAGE AUX.

HEAT

REVERSING VALVE

COMPRESSOR