Table of Contents
Advertisement
Motor Speed Adjustment
Each WMAHV blower motor has been preprogrammed for
operation at 4 distinct airflow levels when operating in cooling/
heat pump mode or electric heat mode. These 4 distinct levels
may also be adjusted slightly lower or higher if desired.
The adjustment between levels and the trim adjustments are
made by changing the DIP switch(s) either to an OFF or ON
position.
DIP Switch Functions
The WMAHV blower motor has an electronic control that contains
an 8-position DIP switch. The functions of these DIP switches are
shown in the following chart.
CFM Delivery
The following table shows the CFM output for DIP switch combinations 1 and 2, and for 5 and 6.
Model
Switch 1
WMAHV 1200
Off
On
Off
On
WMAHV 1600
Off
On
Off
On
WMAHV 2000
Off
On
Off
On
Thermostat—Fan Only Mode
During Fan Only Operations, the CFM output is 30% of the
cooling setting.
CFM Trim Adjustment
Minor adjustments can be made through the DIP switch
combination of 7 and 8. The following table shows the DIP switch
position for this feature.
NOTE: The airflow will not make the decreasing adjustment in
Electric Heat mode.
CFM
Switch 7
+10%
On
-15%
Off
NOTE: If no adjustment is required, DIP switches 7 and 8 should
be left in the OFF position.
Switch 2
Electric Heat CFM
Off
1,200
Off
1,000
On
800
On
600
Off
1,600
Off
1,400
On
1,200
On
1,000
Off
1,900
Off
1,600
On
1,400
On
1,200
Switch 8
Off
On
DIP Switch Number
1
2
3
4
5
6
7
8
Switch 5
Switch 6
Off
Off
On
Off
Off
On
On
On
Off
Off
On
Off
Off
On
On
On
Off
Off
On
Off
Off
On
On
On
Humidity Control
When using a humidistat (normally closed), cut jumper PJ6 on the
control board. The humidistat will only affect the cooling airflow
by adjusting the airflow to 85%.
2-Stage Heating
When using staged electric heat, cut jumper PJ4 on the control
board.
Function
Electric Heat
N/A
Indoor Thermostat
Cooling/Heat Pump CFM
CFM Trim Adjust
Cooling/Heat Pump CFM
1,200
1,000
800
600
1,600
1,400
1,200
1,000
2,000
1,800
1,600
1,200
21
Advertisement
Table of Contents
