Install Instructions

11
The AEPF product uses a General Electric ECM
TM
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 ECM
TM
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 AEPF 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
2
3
N/A
4
Indoor Thermostat
5
6
7
8
Cooling & Heat Pump CFM
CFM Trim Adjust
Table 9
Electric Heat
CFM Delivery
Tables 10 and 11 show the CFM output for dipswitch
combinations 1-2, and 5-6.
Switch Switch
12
OFF OFF 1100 1210
ON OFF 850 935
OFF ON
700 775
AEPF3036
OFF OFF
2050 2150
and
ON OFF
1750 1835
AEPF4260
OFF ON
1600 1680
ON ON
1200 1260
Model
TABLE 10 - ELECTRIC HEAT CFM
AEPF1830
EMERGENCY
(ELECTRIC)
HEAT
HP
w/BACKUP
HEAT
Switch Switch
56
OFF OFF 2 ½ 1100
ON OFF 2 800
OFF ON
1 ½
600
AEPF3036
OFF OFF
5 1800
and
ON OFF
4 1580
AEPF4260
OFF ON
3 ½
1480
ON ON
3
1200
Table 11 - Cooling and Heat Pump CFM
Nominal Cooling
Tonnage
AEPF1830
Model 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
Humidity Control
When using a Humidistat (normally closed), cut jumper PJ6
on the control board. The Humidistat will only affect cooling
airflow by adjusting the Airflow to 85%.
Two Stage Heating
When using staged electric heat, cut jumper PJ4 on the
control board.