Heat Controller HCG**V1E, HMG**X1E, HMG**F1E Refrigerant Line Connections, Nitrogen

7.Insert the plug (from horizontal drain pan) into the open and unused drain hole in the drain pan at the bottom of the unit to block bypass air.

8.Remove the corresponding drain line knockout from the coil access door to allow access to the horizontal drain.

9.Replace the door and attach the drain line

3.Remove the release paper from the other side of the gasket and attach to the circuit breaker recess area.

4.Press firmly along all four sides of the cover to ensure gasket and cover are securely attached to the access door.

Refrigerant Line Connections

Circuit Breaker Cover Installation

The air handler circuit breaker cover is designed to protect the breakers of an installed heater kit from debris and condensation.The cover attaches to the breaker recess of the air handler upper access door using a double-sided adhesive gasket. See Figure 5. The heater kit circuit breaker toggles are still accessible and can be switched with the cover in place.

There are 2 different circuit breaker cover sizes:

•2-breaker cover for 2, 2.5, 3, 3.5, & 4 ton air handlers.

•3-breaker cover for 5 ton air handlers.

After the heater kit is properly installed, remove the appropriate knockouts in the upper air handler access door and follow these instructions to install the breaker cover:

1.Clean any oil, dirt, or insulation fibers from the recess area of the air handler access door.This step is important for ensuring the gasket adheres properly to the sheet metal door.

2.Remove release paper from one side of the gasket and attach to back side of the breaker cover. NOTE: For proper alignment, It is recommended to leave the center section of the gasket in place when attaching the gasket to the breaker cover. Remove the center section after the gasket is applied to the breaker cover.

Circuit
Breakers
Recess
Circuit
Breaker
Cover
Air
Handler A
ccess
	Door

Figure 5. Circuit Breaker Cover

WARNING:

NITROGEN

HEALTH	1
FLAMMABILITY	0
REACTIVITY	0

0 Minimal Hazard 1 Slight Hazard

The coil in the air handler is factory shipped with a nitrogen charge. Avoid direct face exposure or contact with valve when gas is escaping. Always ensure adequate ventilation is present during the depressurization process. Address any uncertainties before proceeding. Failure to comply with this warning could result in equipment damage, personal injury, or death.

•The installer should make every effort to ensure the field installed refrigerant containing components of the system have been installed in accordance with these instructions and sound installation practices for reliable system operation and longevity.

•The air handler coil does not contain a refrigerant charge.

Refer to the installation instructions supplied with the outdoor unit for refrigerant charge information.

•Always refer to the installation instructions supplied with the outdoor unit for piping requirements. The suction and liquid lines must be sized in accordance with the condensing unit specifications. See Figure 12 (page 17) for liquid and suction line locations.

•When connecting refrigerant linesets together, it is recommended that dry nitrogen be flowing through the joints during brazing.This will prevent internal oxidation and scaling from occurring.

•Refrigerant tubing should be routed in a manner that minimizes the length of tubing and the number of bends in the tubing. It should be supported in a manner that prevents it from vibrating or abrading during system operation.Tubing should be kept clean of foreign debris during installation.

•If precise forming of refrigerant lines is required, a copper tubing bender is recommended. Avoid sharp bends and contact of the refrigerant lines with metal surfaces.

•Refrigerant lines should be wrapped with pressure sensitive neoprene or other suitable material where they pass against sharp sheet metal edges.

•HMG**F1E,HMG**X1E&HCG**V1ESeriesairhandlers are charged through service valves on the end of the liquid tube for each circuit. These must be removed before brazing the line sets.

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