Amana GSH13024 Installation Manual download pdf (Page 8)

BRANCH CIRCUIT AMPACITY

15 20 25 30 35 40 45 50

SUPPLY WIRE LENGTH -

FEET

200 64443322

150 86644433

100 108866644

50 141210108866

2. Wire size based on 60° C rated wire insulation and 30° C

Ambient Temperature (86° F).

3. For more than 3 conductors in a raceway or cable, see the

N.E.C. for derating the ampacity of each conductor.

STARTUP, ADJUSTMENTS, AND CHECKS

WARNING

HIGH VOLTAGE!

DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING

THIS UNIT.

MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE

TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR

DEATH.

START-UP P ROCEDURE AND C HECKLIST

With power turned off at all disconnects:

1. Turn thermostat system switch to “COOL” and fan switch

to “AUTO”. Next, turn the temperature setting as high as it

will go.

2. Inspect all registers and set them to the normal open

position.

3. Turn on the electrical supply at the disconnect.

4. Turn the fan switch to the “ON” position. The blower should

operate after a 7-second delay.

5. Turn the fan switch to “AUTO” position. The blower should

stop after a 65-second delay.

6. Slowly lower the cooling temperature until the unit starts.

The compressor, blower and fan should now be operating.

Allow the unit to run 10 minutes, make sure cool air is being

supplied by the unit.

7. Turn the temperature setting to the highest position,

stopping the unit. The indoor blower will continue to run for

65-seconds.

8. Turn the thermostat system switch to “OFF” and disconnect

all power when servicing the unit.

HEAT PUMP START-UP PROCEDURE

1. Check the cooling mode for the heat pump in the same

manner as above. The reversing valve is energized when

the thermostat is placed in the cooling position. A clicking

sound should be noticeable from the reversing valve. By

lowering the temperature setting to call for cooling, the

contractor is energized. The compressor, blower and fan

should then be running. After the cooling mode is checked

out, turn the thermostat system switch to “OFF”.

2. Turn the thermostat system switch to “HEAT” and fan switch

to “AUTO”.

3. Slowly raise the heating temperature setting. When the

heating first stage makes contact, stop raising the

temperature setting.. The compressor, blower and fan

should now be running with the reversing valve in the de-

energized (heating) position. After giving the unit time to

settle out, make sure the unit is supplying heated air.

4. If the outdoor ambient is above 80°F, the unit may trip on

its high pressure cut out when on heating. The compressor

should stop. The heating cycle must be thoroughly

checked, so postpone the test to another day when

conditions are more suitable. DO NOT FAIL TO TEST.

5. If the outdoor ambient is low and the unit operates properly

on the heating cycle, you may check the pressure cutout

operation by blocking off the indoor return air until the unit

trips.

6. If unit operates properly in the heating cycle, raise the

temperature setting until the heating second stage makes

contact. Supplemental resistance heat, if installed should

now come on. Make sure it operates properly.

NOTE: If outdoor thermostats are installed, the outdoor

ambient must be below the set point of these thermostats

for the heaters to operate. It may be necessary to jumper

these thermostats to check heater operation if outdoor

ambient is mild.

7. For thermostats with emergency heat switch, return to step

6. The emergency heat switch is located at the bottom of

the thermostat. Move the switch to emergency heat. The

heat pump will stop, the blower will continue to run, all

heaters will come on and the thermostat emergency heat

light will come on. 3-phase models are single stage heat

only.

8. If checking the unit in the wintertime, when the outdoor coil

is cold enough to actuate the defrost control, observe at

least one defrost cycle to make sure the unit defrosts

completely.

FINAL SYSTEM CHECKS

1. Check to see if all supply and return air grilles are adjusted

and the air distribution system is balanced for the best

compromise between heating and cooling.

2. Check for air leaks in the ductwork.

3. See Sections on Air Flow Measurement and Adjustment

and Checking Charge.

4. Make sure the unit is free of “rattles”, and the tubing in the

unit is free from excessive vibration. Also make sure tubes

or lines are not rubbing against each other or sheet metal

surfaces or edges. If so, correct the trouble.

5. Set the thermostat at the appropriate setting for cooling

and heating or automatic changeover for normal use.

6. Be sure the Owner is instructed on the unit operation,

filter, servicing, correct thermostat operation, etc.

The foregoing “Start-up Procedure and Check List” is recom-

mended to serve as an indication that the unit will operate nor-

mally.

COMPONENTS

Crankcase Heater

This item is “ON” whenever power is supplied to the unit and the

crankcase heater thermostat is closed. Crankcase heater

thermostat closes at 67° and opens at 85°. It warms the compressor

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Amana GSH13024 Installation Manual Page 8

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