Goodman Mfg Achieving 2% LOW Leakage Rate, ARUF/ARPF Motor, Aept Motor, Electric Heat CFM

IMPORTANT NOTE: THE EVAPORATOR COIL IS COATED WITH OILS THAT MAY DISSOLVE STYROFOAM AND CERTAIN TYPES OF PLASTICS. THEREFORE, A REMOVAL PUMP OR FLOAT SWITCH MUST NOT CONTAIN ANY OF THESE MATERIALS.

Tip: Priming the “P” trap may avoid improper draining at the initial installation and at the beginning of the cooling season.

ACHIEVING 2% LOW LEAKAGE RATE

Ensure that the Neoprene gasket with PSA remains intact on all surfaces that the access panels are secured to. These surfaces are the entire length of the wrapper and areas between the upper tie plate, upper and lower access panels. Be sure that upper access panel breaker insert gasket is intact and also flowrator gasket is installed on the lower access panel. An additional drain hole cover is required.

ARUF/ARPF MOTOR

Motor Speed Adjustment

The motors in all ARUF and ARPF motors are multi-speed PSC motors. The color of the wire coming from the motor to the “COM” terminal on the control board defines in which speed the motor will operate. The black wire represents high speed, the red wire represents low speed, and the blue wire (select models only) represents medium speed. To change speeds, remove the wire attached to the “COM” terminal on the control board, and swap it with the wire (on terminal “M1” or “M2”) with the color that will give the desired speed.

NOTE: In some models, not all speed taps are allowable for certain electric heat applications. Refer to air handler Series and Ratings plate for minimum speed.

AEPT MOTOR

This section references the operation characteristics of the AEPT model motor only. The ECM control board is factory set with dipswitch #4 in the “ON” position and all other dipswitches in the “OFF” position. For most applications this setting is to be changed according to the electric heat size and the outdoor unit selection.

The AEPT product uses a General Electric ECMTM motor. This motor provides many features not available on the traditional PSC motor. These features include:

•Improved Efficiency

•Constant CFM

•Soft Start and Stop

•Improved Humidity Control

Motor Speed Adjustment

Each ECMTM blower motor has been preprogrammed for operation at 4 distinct airflow levels when operating in Cooling, H.P. Heating, Backup Heating (Electric Heating), and Backup + H.P. Heating. Each mode has 4 levels to deliver different Air Flow CFM [L/s]. The adjustment is performed by changing the dipswitch(s) either to an “OFF” or “ON” position.

Dipswitch Functions

The AEPT air handler motor has an electronic control that contains an eight (8) position dip switch. The function of these dipswitches are shown in Table 9.

Dipswitch Number	Function
1	Electric Heat
2
3	N/A
4	Indoor Thermostat
5	Cooling & Heat Pump CFM
6
7	CFM Trim Adjust
8

Table 9

CFM Delivery

Tables 10 and 11 show the CFM output for dipswitch combinations 1-2, and 5-6.

	Model		Switch		Switch	EMERGENCY		HP
			1		2	(ELECTRIC)	w/BACKUP
						HEAT		HEAT
				OFF	OFF	1100		1210
	AEPT30			ON	OFF	850		935
				OFF	ON	700		775
AEPT36				OFF	OFF	2050		2150
	and			ON	OFF	1750		1835
AEPT60				OFF	ON	1600		1680
				ON	ON	1200		1260
		TABLE 10 - ELECTRIC HEAT CFM
	Model			Switch	Switch	Nominal Cooling		CFM
				5	6	Tonnage
				OFF	OFF	2 ½		1100
	AEPT30			ON	OFF	2		800
				OFF	ON	1 ½		600
	AEPT36			OFF	OFF	5		1800
	and			ON	OFF	4		1580
	AEPT60			OFF	ON	3 ½		1480
				ON	ON	3		1200

Table 11 - Cooling and Heat Pump CFM

Thermostat “Fan Only Mode”

During “Fan Only Mode” operation, the CFM output is 30% of the cooling setting.

CFM Trim Adjust

Minor adjustments can be made through the dip switch combination of 7-8. The following Table 12 shows the switch position for this feature.

CFM	Switch 7	Switch 8
+10%	ON	OFF
-15%	OFF	ON

Table 12

IO-230F 10 08/04