Bard WG3S1-A, Installation Instructions Manual

Page: 38 / 59

Manual 2100-483E
Page
38 of 59
32. INDOOR BLOWER OPERATION
The indoor blower motor is a constant CFM variable
speed direct drive motor. The motor is programmed to
respond to individual thermostatic inputs that will
determine the speed/airflow at which the motor
operates. The motor software maintains the rated
airflow across the range of allowable static whether the
system is ducted or free blow. It will also maintain the
temperature rise across the gas heat exchanger at the
mid-point of the allowable rise range automatically.
There are not adjustments that can be made in the field
to adjust the airflows for any mode of operation.
TABLE 9
INDOOR BLOWER PERFORMANCE
1
L E D O M
d e t a R
P S E
x a M
P S E
2
s u o u n i t n o C
M F C
3
d e t a R
e g a t S t s 1
M F C g n i l o o C
4
d e t a R
e g a t S d n 2
M F C g n i l o o C
M F C g n i t a e H
6 5
U T B 0 0 0 , 0 5
t u p n I
U T B 0 0 0 , 5 7
t u p n I
U T B 0 0 0 , 0 0 1
t u p n I
U T B 0 0 0 , 5 2 1
t u p n I
1 S 3 G W 5 1 . 0 0 5 . 0 0 0 8 0 0 8 0 0 1 1 0 2 0 1 0 5 2 1 5 6 3 1 0 1 4 1
1 S 4 G W 0 2 . 0 0 5 . 0 5 2 8 0 0 1 1 0 0 5 1 0 2 0 1 0 5 2 1 5 6 3 1 0 1 4 1
1 S 5 G W 0 2 . 0 0 5 . 0 0 5 8 0 0 3 1 0 0 7 1 0 2 0 1 0 5 2 1 5 6 3 1 0 1 4 1
FIGURE 17
FURNACE CONTROL BOARD AND BLOWER CONTROL
1
Motor will deliver consistent CFM through voltage supply range with no deterioration
(197-253V for 230/208V models, 414-506V for 460V models).
2
Continuous CFM is the total air being circulated during continuous (manual) fan mode.
3
Will occur automatically with a call for “Y1” signal from thermostat.
4
Will occur automatically with a call for “Y2” signal from thermostat.
5
Will occur automatically with a call for “W” signal from thermostat.
6
Constant CFM of Variable Speed Motor should maintain mid-rise temperature differential through range of allowable static.