NOTE: Variable speed air handlers cannot be twinned.
Heater Kits
When electric heat packages with circuit breakers are
If a heater kit is installed:
The HMG**F1E series air handler is shipped from the factory without an electric heater kit installed. If Electric heat is desired, the H6HK heater kit may be purchased separately and field installed. Determine the correct size heater kit for your unit by referring to the list below or the units rating label.
24K & 30K BTUH | 15Kw max |
36K & 42K BTUH | 20Kw max |
48K & 60K BTUH | 30Kw max |
1.Connect the 2 wire plug of the air handler to the mating 2 wire plug of the heater kit.
2.Connect the line voltage leads to the circuit breaker or terminal block provided.
3.Connect the heater kit plug with the mating receptacle on the air handler control board.
If a heater kit is not installed:
1.Remove the 2 wire plug of the air handler by cutting the wires and discarding the plug.
2.Strip the ends of the 2 air handler wires and connect to the
Electronic Air Cleaner (EAC)
The unit has an output to power an electronic air cleaner when the blower is running. This output is rated to 1.0 amp at 208/240V.
Humidifier
The unit has an output to power a humidifier when the blower is running. This output is rated to 1.0 amp at 208/240V.
Optional Humidistat
(HMG**X1E & HCG**V1E Models Only)
The optional humidistat may be installed in the return air duct to provide excellent humidity control when needed and maximum system capacity and energy efficiency when humidity levels are normal. The humidistat senses when humidity in the return air stream is above a preset level (field adjustable) and sends a signal to the motor to reduce the airflow so that more moisture may be removed until the humidity level drops. The air handler is
Install the humidistat in the return air duct as directed in the installation instructions included with the kit. Wire the humidistat through the
Startup & Adjustments
WARNING:
NITROGEN
|
|
|
HEALTH | 1 |
|
|
|
|
|
|
|
FLAMMABILITY | 0 |
|
|
|
|
|
|
|
REACTIVITY | 0 |
|
|
|
|
0 Minimal Hazard | 1 Slight Hazard |
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.
Before You Start the Unit
Prior to start-up, complete the following inspections:
√Verify the unit is level and properly located with adequate clearances for servicing the unit. See Table 1 (page 4).
√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.Make sure all doors are installed before restoring power to the unit
√Verify the thermostat is wired correctly. Make sure all low voltage wires are securely connected.
√Verify the power supply branch circuit overcurrent protection is sized properly.
√Verify filter is properly and securely installed.
IMPORTANT: Before starting the unit, 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.Weigh in the proper amount of new (or reclaimed) refrigerant. Refer to the air conditioner or heat pump installation manual for the proper type and quantity of refrigerant.
13
