Goodman Mfg GKS9 service manual Side Return, Bottom Return

PRODUCT DESIGN

Thermostats:

NOTE: Complete lineup of thermostats can be found in the Thermostat Specification Sheets.

Filters:

Filters are required with this furnace and must be provided by the installer. The filters used must comply with UL900 or CAN/ULCS111 standards. Installing this furnace without filters will void the unit warranty.

Upflow Filters

This furnace has provisions for the installation of return air filters at the side and/or bottom return. The furnace will accommodate the following filter sizes depending on cabinet size:

SIDE RETURN

Cabinet	Nominal	Approx.
Width	Filter Size	Flow Area
(in.)	(in.)	(in2)
All	16 x 25 x 1	400

BOTTOM RETURN

Cabinet	Nominal	Approx.
Width	Filter Size	Flow Area
(in.)	(in.)	(in2)
17-1/2	14 x 25 x 1	350
21	16 x 25 x 1	400
24-1/2	20 x 25 x 1	500

Refer to Minimum Filter Area tables to determine filter area requirement. NOTE: Filters can also be installed elsewhere in the duct system such as a central return.

		COOLING AIRFLOW REQUIREMENT (CFM)
		600	800	1000	1200	1400	1600	2000
	0453_X*	376*	384	480	576	---	---	---
Airflow	0703_X*	---	564*	564*	564*	672	---	---
	0704_X*	---	---	564*	564*	672	768	---
Input	0904_X*	---	---	752*	752*	752*	768	---
	0905_X*	---	---	---	752*	752*	768	800
	1155_X*	---	---	---	940*	940*	940*	800

*Minimum filter area dictated by heating airflow requirement.

		COOLING AIRFLOW REQUIREMENT (CFM)
		600	800	1000	1200	1400	1600	2000
	0453_X*	188*	192	240	288	---	---	---
Airflow	0703_X*	---	282*	282*	282*	336	---	---
	0704_X*	---	---	260*	260*	336	384	---
Input	0904_X*	---	---	376*	376*	376*	384	---
	0905_X*	---	---	---	376*	376*	384	480
	115_X*	---	---	---	470*	470*	470*	480

*Minimum filter area dictated by heating airflow requirement.

Disposable Minimum Filter Area (in2)	Permanent Minimum Filter Area (in2)
[Based on a 300 ft/min filter face velocity]	[Based on 600 ft/min filter face velocity]

10