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1. Thermostat calls for heat, connection is
made between the (“R” terminal) red and
“W” terminal) white thermostat wires.
2. Heating relay is energized; closes
providing power to the heating speed
motor tap; opens, interrupting power to
continuous run motor tap. Pump relay is
energized; A1 to A3 closes.
3. When room temperature is satisfied,
thermostat breaks connection between
red and white wires.
4. Relays are de-energized; pump stops, fan
shuts off (or switches to continuous run
speed when continuous run employed).
Cooling Cycle
1. Thermostat calls for cooling, connection
is made between (“R” terminal) red and
(“Y” terminal) yellow thermostat wires.
2. Cooling condenser circuit energized
provided field supplied freeze thermostat
is closed.
3.
Connection is made between (“G”
terminal) green and (“R” terminal) red
thermostat wire.
4. When thermostat satisfied, connection
between red and yellow broken at
thermostat.
5. Cooling condenser circuit is de-energized.
Fan shuts off (or switches to continuous
run speed when continuous run
employed).
Continuous Run Cycle (Fan ON)
1.
Connection is made between (“G”
terminal) green
and (“R” terminal) red
thermostat wire.
2. Continuous run relay is energized; fan
operates on continuous run speed.
(factory set to high speed).
Continuous Run Cycle (full time)
1. Connection is made between F1 and F2
terminals on the board.
2. Fan operates on continuous run speed.
(factory set to low speed).
SEQUENCE OF OPERATION (MAXe UNITS) .
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 (“W1” and or “W2” terminal)
thermostat wires as set up by installer.
2 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 or W2
input. If 2-stage timed heat is selected
at control board, fan speed will not
increase to the “W2” value until after a
programmed 5 minute delay
3 If R + D (optional aquastat circuit) are
interrupted, motor remains at
continuous low input value until circuit
is made.
4 When room temperature is satisfied,
thermostat breaks connection
between “R” and “W1” / “W2” wires.
5 Relays are de-energized; pump stops,
fan shuts off (or switches to
continuous run speed when
continuous run employed).
Cooling Cycle
1
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.
Содержание MaxAir 100 LV
Страница 31: ...Page 31 WIRING DIAGRAM STANDARD UNITS...
Страница 32: ...Page 32 WIRING DIAGRAM MAXe UNITS...
Страница 33: ...Page 33 FAN COIL DIMENSIONS AND RETURN AIR SIZE LOCATION...
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Страница 41: ...Page 41 2 AND 2 5 TON EVAPORATOR COIL SIZES 70 IPCE 24 30A...
Страница 42: ...Page 42 SAMPLE PIPING SCHEMATICS...
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