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IM 938-4 / Page 30 of 42
Premium (Programmable) Digital
Control Board – Jumper Placement
1– Jumper Placement to Select System Module
(See Jumper Detail)
A
– Place jumper across AC/HYD to select
Air Conditioner/Hydronic Heat.
B
– Place jumper across AC/E to select
Air Conditioner/Electric Heat.
C
– Place jumper across AC/HYD/E to select
Air Conditioner/Hydronic/Electric.
D
– Place jumper across HP to select Heat Pump
E
– Place jumper across HP/E to select Heat Pump/Electric.
2– Jumper Placement to Select Fan Control:
A
– When in Fan Cycle Mode, fan operates for 2 minutes.
Place jumper across 10, 20, 30, or 1 HR to select fan
cycle off minutes which will be overridden by the room
temperature.
3– Jumper Placement to Select Controller Type:
A
– Place jumper across LUI to select unit mounted touchpad
(Local User Interface).
B
– Place jumper across SLAVE to select SLAVE Control by
a master unit.
C
– Place jumper across T’STAT to select remote, wall-
mounted programmable, or non-programmable
thermostat.
4– Jumper Placement to Select
Hydronic Valve:
A
– Place jumper across NO to select Normally Open
Hydronic Valve.
B
– Place jumper across NC to select Normally Closed
Hydronic Valve.
B
Jumper Placement Detail
3
2
1
C
A
4
D
E
A
A
B
C
A
B
Wiring Diagram Legend
CT
=
Control Transformer
DM
=
Damper Motor
CM
=
Compressor Motor
IFM
=
Indoor Fan Motor
OFM =
Outdoor Fan Motor
HFLO =
Heat Fan Lockout Sensor
OCS =
Outdoor Coil Sensor
OAS =
Outdoor Air Sensor
ICS
=
Indoor Coil Sensor
IAS
=
Indoor Air Sensor
LUI
=
Local User Interface
HYV =
Hydronic Valve
REV =
Reversing Valve
EHC =
Electric Heat Contactor