Instruction manual

16
Control Board Taps and Dehumidify Resistor
.
4. If desired, adjust ADJUST tap from NORM: (+) will increase
airflow by 10% or (-) will decrease airflow by 12%
5. Reconnect all power supplies.
Application Table—Variable Speed Motor
The versatility of the variable speed motor enables the
performance of the BCS2 with variable speed to be tailored to
the different modes of operation encountered in heating and
cooling All BCS2's with variable speed are capable of operation
at more than one nominal airflow rate. The operation of a variable
blower at different airflow rates is determined by the control
board taps and the thermostat (see the Application Table). Before
beginning the setup, become familiar with the information found
in this table.
The data in the application table is categorized by unit size and
mode of operation. Use the information provided to determine
the CFM taps needed for cooling and heating.
A. Dehumidify LED
B. Dehumidify resistor
DEHUMIDIFY
CUT TO ENABLE
COOLHEATADJUST
NORM A
B
C
D
A
B
C
D
(+)
(–)
TEST
D1
A
B
Application Table—Variable Speed Motor Control Board Taps
Energized Thermostat
Ter m in al
Cool Heat
Model Mode HUM EM W1 O Y2/Y1 G A B C D A B C D
CFMCFMCFMCFMCFMCFMCFMCFM
WAHMV24 Continuous
Blower
X 400 350 350 350
Cooling ** X X 800 700 600 400
Heating X 800 700 600 400
Auxillary
Heat
X X *** *** *** *** 800 800 600 600
Emergency
Heat
X X *** *** *** *** 800 800 600 600
WAHMV36 Continuous
Blower
X 600 500 400 350
Cooling ** X X 1,200 1,000 800 600
Heating X 1,200 1,000 800 600
Auxillary
Heat
X X *** *** *** *** 1,200 1,200 800 800
Emergency
Heat
X X *** *** *** *** 1,200 1,200 800 800