Airmax MaxAir 100 LV, Installation And Maintenance Instructions Manual

Page: 23 / 48

Page 23
L1,L2 SELECTIONS WHEN 0-10V INPUT ACTIVE
SET MAX
AIRFLOW
(DIP-SW2)
COMMAND INPUT
RANGE
COMMAND
OUTPUT RANGE
L1,L2=0
0-10V 0-100%
L1=1,L2=0
0-10V 0-83%
L1=0,L2=1
0-10V 0-66%
L1,L2=1
0-10V 0-50%
TABLE3
NOTE: POWER TO THE CONTROLLER MUST BE CYCLED FOR THE DISCRETE OR 0-
10V SWITCH STATE TO BE RECOGNIZED. THE SELECTED STATE BECOMES
EFFECTIVE AFTER POWER IS RESTORED.
B.
ONE AND TWO STAGE HEATING SYSTEM SELECTOR
1. "1&2-STG HT" (SW1-1): In this position, single-stage and true two-stage heat
control from a thermostat is operational. The Heating inputs (W1, W2) will operate the
system as follows:
1. OPERATING With a FURNACE ("Y" not Active in Heating)
D & W1 active : When "1&2-Stg HT" and D AND W1 are active, the selected
output PWM % shown under W1 in TABLES A and B, above, occurs after a 15
sec delay after any W activates.
D & W2 active : When "1&2-Stg HT" AND D AND W2 are active, the selected
output PWM % shown under W2 in TABLES A and B occurs after a 15 sec time
delay after W1 or W2 activate.
W2 has precedence over W 1: If either W1 and W2 , or W2 alone, is active, the
W2 command output occurs.
STAGING DELAY: There is no time delay when sequentially staging from W1
to W2 or back (i.e. without an OFF-CYCLE).
For convenience, when a single stage HEAT system is applied, an on-board
SHUNT connects W1 to W 2 for operation at the W2 airflow whenever any W is
active.
NOTE: THE SHUNT MUST BE REMOVED WHEN A TWO STAGE HEATING SYSTEM IS APPLIED.
When either or both W1 and W2 are active and D is NOT active, the
output will be per the column
(W1 or W2) & NOT D in Tables A and B.
2-stage WIRING: True 2-stage (2-wire: W1, W2) operation requires the W1 and
W2 terminals of the thermostat to be wired to W1 and W2, respectively, on the
DCC7235.