17
ASPT/ASUF Thermostat Connections
NOTES:
1) OUTDOOR THERMOSTAT (OT-1) SHOULD BE THE
FIRST TO CLOSE AND THE LAST TO OPEN.
2) JUMPER W1 AND W2 TOGETHER IF OT-2 IS NOT
USED.
3) REMOVE WIRE WHEN USING OUTDOOR THERMO-
STAT.
NOMENCLATURE:
OT - OUTDOOR THERMOSTAT (OPTIONAL)
EHR - EMERGENCY HEAT RELAY (OPTIONAL)
COLOR CODES
RD - RED
YL - YELLOW
BL - BLUE
BR - BROWN
OR - ORANGE
WH - WHITE
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING.
MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO
MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
The following composite wiring diagrams detail various con-
figurations in which the ASPT/ASUF air handlers can be used.
Examples include single-stage cooling and heat pump with
single or two-stage electric heating. All these configurations
can be applied with convenient connections to outdoor ther-
mostat applications.
The following sections will be detailed:
•
Single-Stage Cooling
•
Heat Pump
Each diagram details the connections between room ther-
mostat and ASPT air handlers, and the connections between
the ASPT air handlers and the Condensing Unit (or Heat
Pump) with optional connections to Outdoor Thermostats.
For each configuration, refer to the explanation of the proper
jumper(s) to remove for the corresponding blower speed that
will result in the programmed EEM™ motor.
IMPORTANT: WHEN MATCHING THE ASPT AIR
HANDLERS TO A SINGLE SPEED COOLING OR
HEAT PUMP UNIT, REMEMBER TO CONNECT “Y”
FROM THE THERMOSTAT TO THE “Y2” ON THE
LOW VOLTAGE TERMINAL BOARD.
An equivalent thermostat can be used in place of the
manufacturer’s thermostat part number.
COOLING UNIT WITH OPTIONAL HEAT KITS OF 10 kW AND BELOW
G
R
C
W1
Y
W
W2
Y2
Y1
O
G
R
TB
YL
BL
TO CONDENSING UNIT
24V CONNECTION
BL
YL
YL
WH
GR
RD
#18 GA. 4 WIRES WITH COOLING
3 WIRES WITHOUT
ASPT UNIT
ASUF UNIT
