Airmax MaxAir 100e P2, Design, Installation And Maintenance Instructions

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when continuous run (Fan On) is
employed at the thermostat).
Cooling Cycle
1 Zone thermostat calls for cooling,
connection is made between (“R”
terminal) red (“G” terminal) green and
(“Y1”or “Y2” terminal, factory bridged)
thermostat wires, as selected by the
installer.
2 Corresponding zone damper opens
fully, other zone damper (if not calling)
powers to minimum open position and
the cooling condenser circuit is
energized provided field supplied
freeze thermostat is closed.
3 After Time delay fan motor starts at
value selected by installer and
corresponding “Y1” or “Y2” input
4 When room temperature is satisfied,
thermostat breaks connection between
“R”, “G” and “Y1” / “Y2” wires.
5 When both zone temperature are
satisfied the cooling condenser circuit
is de-energized, the zone dampers
revert to the full open position and the
fan shuts off (or switches to continuous
run speed when continuous run (Fan
On) is employed at the thermostat).
Continuous Run Cycle (Fan ON)
1 Zone thermostat connection is made
between (“G” terminal) green and (“R”
terminal) red.
2 Corresponding zone damper opens
fully, the other zone damper, if not
calling, powers to minimum position.
3
Continuous run relay is energized; fan
input value operates on continuous run
speed.
SEQUENCE OF OPERATION P3 .
Refer to Ladder Diagram and Wiring Schematic for relay locations.
Note: MaxAir ™ air handlers are equipped with a brushless dc fan motor. Speeds for heating,
cooling and continuous run are all field selectable. Refer to Electrical section for description.
Heating Cycle
1. Thermostat calls for heat, connection is made between the (“R” terminal) red and white
(“W” terminal) thermostat wires as set up by installer.
2. Corresponding zone damper opens fully, the other zone damper, if not calling, powers to
minimum open position. Heating relay is energized; providing power to relay A1, circulating
pump connection point. After “15 second delay” to allow plenum to warm up, fan motor
starts at value selected by installer and corresponding W1 input. Only upon call for second
zone and after timed default will the fan increase to the W2 value.
3. If R + D (optional aquastat circuit) are interrupted, motor remains at continuous low input
value until circuit is made.
4. When the zone temperature is satisfied, the zone thermostat breaks connection between
“R” and “W”. The off zone damper returns to the minimum open position.
5. When all thermostats are satisfied ,the relays are de-energized; pump stops, zone dampers
revert to their full open position, fan shuts off after a pre-programmed purge delay (or
switches to continuous run speed when continuous run (Fan On) is employed at the
thermostat).
Cooling Cycle
1. Zone thermostat calls for cooling, connection is made between (“R” terminal) red (“G”
terminal) green and (“Y1”, “Y1/Y2” terminal, factory bridged) thermostat wires, as selected
by the installer.
2. Corresponding zone damper opens fully, other zone damper (if not calling) powers to