Manual 2100-549Q
Page
52 of 69
CFM
FLOW INDEX
(Light Blink Code)
450
100
425
89
400
83
375
76
350
59
325
50
300
40
275
32
250
25
225
12
200
9
175
4
150
1
To adjust the airflow ventilation rate (NO CO
2
CONTROL/NON-
MODULATING), determine the "FLOW INDEX" needed for the intake
and exhaust blowers for the required CFM. Use a small phillips-head
screwdriver to make adjustments.
1. Locate two (2) 0-10Vdc motor control boards in control panel.
2. On
intake
motor control board, observing "GREEN STATUS LIGHT",
turn manual adjust potentiometer counterclockwise to increase
"FLOW INDEX" or clockwise to reduce "FLOW INDEX" to match
desired setting. (NOTE: After long pause, the green status light will
blink long-blinks for the "TEN COUNT" of the "FLOW RATE INDEX",
which then is immediately followed by fast blinks which indicate
the second digit. For example, a Flow Index of 23 would be two long
blinks, followed by 3 fast blinks of the green status light.)
3. On
exhaust
motor control board, observing "GREEN STATUS LIGHT",
turn manual adjust potentiometer counterclockwise to increase
"FLOW INDEX" or clockwise to reduce "FLOW INDEX" to match
desired setting. (See NOTE in Step 2.)
CFM
Vdc Signal from
CO
2
Control
450
10
425
8.87
400
8.31
375
7.61
350
6.73
325
5.91
300
5.15
275
4.58
250
4.06
225
2.91
200
2.57
175
2.24
150
1.74
125
0.96
100
0.77
After determining the air volume rates needed for the intended
application (maximum and minimum), use this table to program CO
2
control output voltages in correlation to the CO
2
levels needed when Bard
CO
2
Control 8403-067 is applied.
FIGURE 29A
ERV “Manual Mode” Jumper Pin on “M” Terminal
FIGURE 29B
ERV “Modulating Mode” Jumper Pin on “P” Terminal
