Comfort-aire FMG****F1E Series User Manual download pdf (Page 10)

STARTUP & ADJUSTMENTS

WARNING:

The evaporator coil is shipped from the factory

with a nitrogen charge. Use caution when

preparing coils for ﬁeld connections. If repairs

make it necessary for evacuation and charging,

it should only be attempted by qualified,

trained personnel thoroughly familiar with this

equipment. Some local codes require licensed

installation service personnel to service this

type of equipment. Under no circumstances

should the equipment owner attempt to install

and/or service this equipment. Failure to comply

with this warning could result in equipment

damage, personal injury, or death.

NITROGEN

HEALTH

FLAMMABILITY

REACTIVITY

0 Minimal Hazard

1 Slight Hazard

Before You Start the Unit

Prior to start-up, complete the following inspections:

√ Verify the unit is level and mounted securely to the wall.

Also make sure the air handler is properly located with

adequate clearances for servicing the unit as listed in

Table 1 (page 3).

√ Check condensate drain line(s) for proper drainage.

√ Verify the surrounding area and top of the unit is free

from obstructions and debris.

√ Check all duct connections. Make sure the duct work

is adequately sealed to prevent air leakage.

√ Check all coil connections for leaks.

√ Verify that the line voltage power leads are securely

connected and the unit is properly grounded.

√ Verify the thermostat is wired correctly. Make sure all

low voltage wires are securely connected to the correct

leads of the low voltage terminal strip.

√ Verify the power supply branch circuit overcurrent

protection is sized properly.

√ Verify ﬁlter is properly and securely installed.

IMPORTANT: Before you start unit, perform the following

procedures to install the initial charge on units that are

factory shipped with a nitrogen holding charge:

1. Read all installation instructions ﬁrst.

2. Purge the nitrogen holding charge.

3. Evacuate the unit to 350 - 500 microns.

4. Allow the unit to remain under vacuum for at least 30

minutes.

5. Inspect the unit rating plate for the proper type of

refrigerant and quantity.

6. Weigh in the proper amount of new (or reclaimed)

refrigerant.

Refrigerant Charging

The system refrigerant charge can be checked and

adjusted through the service ports provided at the front

panel. Use only gauge lines which have a Schrader

depression device present to actuate the valve.

Air Circulation

Running the Blower Continuously

Set the thermostat’s system mode to OFF and the

thermostat’s fan mode to ON. The blower motor should

run continuously. Check for air delivery at the register(s).

Ensure that there are no obstructions at the registers or

in the ducts.

Turning the Blower Off

Set thermostat’s fan mode to AUTO, the blower will shut

down immediately.

NOTE: If blower is turning opposite of arrow direction, shut

off main power to the unit and switch any two ﬁeld wires

at the disconnect. DO NOT alter unit wiring.

System Cooling

1. Set the thermostat’s system mode to COOL and fan

mode to AUTO. Lower the thermostat’s temperature

mode below room temperature and observe that the

blower energizes. Check the air being discharged at

the register is cooler than room temperature. Verify

unit refrigerant pressures are in order. Blower should

be turning in direction indicated by arrow. NOTE: If

refrigerant pressures are abnormal and blower is rotating

in the opposite direction of the arrow, shut off main

power to the unit and switch any two ﬁeld wires at the

disconnect. Verify proper rotation of both compressor and

blower. DO NOT alter unit wiring. Listen for any unusual

noises. Locate the source and correct as needed.

2. Allow the unit to run for several minutes and then set

the thermostat’s temperature above room temperature.

Verify the blower cycles off with the thermostat.

System Heating

1. Set the thermostat’s system mode to HEAT and the fan

mode to AUTO. Increase the thermostat’s temperature

above room temperature and observe that the blower

energizes. Check the air being discharged at the register

is warmer than room temperature.

2. Allow the unit to run for several minutes and then set

the thermostat’s temperature below room temperature.

Verify the blower cycles off with the thermostat.

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 19 20

Comments to this Manuals

No comments

Comfort-aire FMG****F1E Series User Manual Page 10

Comments to this Manuals

Related products and manuals for Air equipment Comfort-aire FMG****F1E Series