Nordyne E3 user service Return Air and Filtering Systems, Tie Down Tab, Downflow Installation

	Power
	Supply	Refrigerant
	Wire
	Entrances	Line
		Knockouts
	Power
	Supply	Blower Selector
	Wire
Refrigerant		Switch (EH Only)
	Entrances
Line Knockouts	Tie Down Tab
Blower Selector
	Tie-Down Tab
Switch (EH Only)	(See Inset)	Low Voltage
		Wire Entrances
DOWNFLOW INSTALLATION		UPFLOW INSTALLATION

Figure 16. Downflow and Upflow Installations

NOTES:

•Before installing this furnace, consider all clearances for the installation and future servicing of the furnace. Refer to Table 1.

•The 2 Wire Relay Control is NOT recom- mended for upfl ow applications, instead, the AC/HP Relay Control (4-7 wire) should be used when converting some models to accept an air conditioner. See Relay Control installation instructions for further details.

Upflow Duct

Connector

Return Air and Filtering Systems

Furnaces may be installed with unducted or ducted return air. For unducted systems with air conditioners or heat pumps, the following optional equipment is recommended: upfl ow stand, coil cabinet, upfl ow duct connector, and wall mount grille. For ducted systems with air conditioners or heat pumps, the following optional equipment is recommended: coil cabinet and upfl ow duct connector.

NOTE: Refer to the instructions supplied with any additional accessories for further installa- tion details.

Filtering Methods - Non-Ducted Return Air

Furnace

Upflow Stand

Filter

(one obtained from furnace)

1.Without optional upflow stand: (see Figure 18)

-install a fi lter with a minimum unrestricted medium area of 324 square inches below the coil cabinet/furnace assembly that is accessible for monthly cleaning or replace- ment by the homeowner

2.With optional upflow stand: (see Figure 17) Stand must use two fi lters; one is supplied with the stand and the other MUST be removed from the furnace and placed in the stand - see upfl ow stand instructions for additional details.

Filtering Methods - Ducted Return Air

Figure 17. Over-the-Floor Return Air Sys-

tem with Upflow Stand

1.Install a fi lter with a minimum unrestricted medium area of 324 square inches below the coil cabinet/furnace assembly that is accessible for monthly cleaning or replace- ment by the homeowner

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