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5
Each Heatcraft Quick Response Controller board power is supplied by a transformer in the evaporator on which
it is mounted. Do not run any 24 VAC wires between Heatcraft Quick Response Controller boards on the evaporators.
Configuration
M
S
S
S
M
= Master Evaporator
S
= Slave Evaporator
If there are multiple evaporators on a system, the program for
each SLAVE evaporator must be changed to identify it as a SLAVE.
To do so, press the “
PROGRAM REVIEW
” button repeatedly until
“
SLA
” appears then use the “
SELECT
” knob to select “YES” and
press “
ENTER
”. All Heatcraft Quick Response Controller boards are
shipped with the factory default as a MASTER evaporator. Place all
boards in the “
SERVICE
” mode while you program the setpoints to
avoid errors and alarms which may cause troubles at startup.
VERY IMPORTANT:
This must be done for each slave board, prior
to starting the system.
Multiple Evaporator Configuration (Master/slave)
Up to 4 evaporators can be connected as a master/slave
configuration.
DO NOT remove the room sensor from any of the Heatcraft
Quick Response Controller boards programmed as Master.
PROGRAM
REVIEW
SELECT
Summary of Contents for H-IM-QRC
Page 31: ...31 Wiring TYPICAL ELECTRIC DEFROST WIRING DIAGRAM ...
Page 37: ...37 Notes ...
Page 38: ...38 Notes ...
Page 39: ...39 Notes ...