Setting Unit Airflow; Table 13 Recommended Airflow - Bard WA Series Installation Instructions Manual

Setting Unit Airflow

The unit is set from the factory at the rated speed.
Most units have three selectable speed taps that can
be utilized. The rated speed is the lowest speed. The
two higher speed taps can be used for higher duct
static applications so that the unit can maintain the
recommended airflow as shown in Table 13. The higher
speeds can also be used when higher sensible cooling
is desired. To change to the higher speed taps, move
the orange/black wire on the blower speed terminal
block (purple wire on some models) to either MED or
HI. Refer to Table 14 on page 28 for the corresponding
airflow of each tap. In the case of the units with a
purple wire, only one higher speed tap is available
(MED).
Model
W18A, W18L
W24A, W24L
W30A, W30L
W36A, W36L
* Rated CFM and ESP on factory speed connection.
Recommended Airflow
Nominal Nominal
Recommended
Rated Rated
Airflow Range
CFM* ESP*
600 .10 550 - 725
800 .10 700 - 950
950 .15 900 - 1125
1150 .15 1000 - 1200
NOTE: Be sure to adjust the system static or
blower speed to maintain airflows above the
minimum recommendations to prevent freeze
up conditions if Balanced Climate mode is
activated.
Do not operate the unit in Balanced Climate mode if
running high static applications as indicated in the
blower performance table. If Balanced Climate mode
is activated as described on page 18, the unit will
run in this mode at all times unless there is a call for
ventilation or electric heat. At that time, the unit will
automatically activate a higher speed tap.
TABLE 13
Factory Speed
Connection
Rated
Minimum Airflow:
Balanced Climate Mode
380
500
605
685
Manual 2100-689
Page 27 of 32