Goodman Mfg ACVC9/AMVC95, GCVC9/GMVC95 service manual Circulator Blower Speed Adjustment Switches

BLOWER PERFORMANCE SPECIFICATIONS

Circulator Blower Speed Adjustment Switches

Sw itch Bank: S3

Cooling Speed	DIP Sw itch No.
Taps	1	2
A	OFF	OFF
B	ON	OFF
C	OFF	ON
D*	ON	ON
(*Indicates factory setting)
Sw itch Bank: S4
Heating Speed	DIP Sw itch No.
Taps	7	8
A	OFF	OFF
B*	ON	OFF
C	OFF	ON
D	ON	ON

(*Indicates factory setting)

Sw itch Bank: S3

Adjust Taps	DIP Sw itch No.
	3	4
Normal*	OFF	OFF
10%	ON	OFF
-10%	OFF	ON
Normal	ON	ON

(*Indicates factory setting)

Note: There are dual 7-segment LED's adjacent to the selection dipswitches. The airflow rounded to the nearest 100 CFM, is displayed on the dual 7-segment LED's. The CFM display alternates with the operating mode.

Example:

If the airlfow demand is 1230 CFM, the LED's will display 12. If the airflow demand is 1275 CFM, the LED's will display 13.

Note: Continuous fan speed will be 30% of the furnace's maximum airflow capability. If the fur- nace maximum CFM capaibility is 1760 CFM, the continuous fan speed will be 0.30 X 1760 CFM = 530 CFM.

Example: If the furnace maximum CFM capaibility is 1760 CFM, the continuous fan speed will be 0.30 X 1760 CFM = 530 CFM.

Dehumidification Enable Switch

ON		OFF
9			DEHUM	Move to the ON position
10			Unused	to enable dehumidification
	S5

Note: The optional usage of a dehumidistat allows the furnace’s circulator blower to operate at a slightly lower speed (85% of desired speed) during a combined thermostat call for cooling and dehumidistat call for dehumidification. This can be done through an independent dehumidistat or through a thermostat’s DEHUM terminal (if available). This lower blower speed enhances dehumidification of the conditioned air as it passes through the AC coil. For proper function, a dehumidistat applied to this furnace must operate on 24 VAC and utilize a switch which opens on humidity rise.

1.Units are shipped without filter(s). CFM in chart is without filter(s).

2.All furnaces shipped with heating speed set at "B" and cooling speed set at "D". Installer should adjust blower speed as needed. The first task is to determine the proper aiflow for the cooling system.

3.For most cooling applications, about 400 CFM per ton is desirable.

4.The chart is for information only. For satisfactory operation, external static pressure not to exceed value shown on rating plate.

5.Do not operate above 0.5" w.c. ESP in heating mode. Operating between 0.5" w.c. and 0.8" w.c. is tabulated for cooling purposes only.

6.* Motor CFM minimum.

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