Cxm Controls - Heat Controller HTV Series Installation, Operation & Maintenance Instructions Manual

Heat Controller, Inc.

CXM Controls

CXM CONTROL
For detailed control information, see CXM
Application, Operation and Maintenance
Manual.
FIELD SELECTABLE INPUTS
Test Mode: Test mode allows the service
technician to check the operation of the
control in a timely manner. By momentarily
shorting the test terminals, the CXM control
enters a 20 minute test mode period in
which all time delays are sped up 15 times.
Upon entering rest mode, the status LED will
flash a code representing the last fault. For
diagnostic ease at the thermostat, the alarm
relay will also cycle during test mode. The
alarm relay will cycle on and off similar to the
status LED to indicate a code representing
the last fault, at the thermostat. Test mode
can be exited by shorting the test terminals
for 3 seconds.
Retry Mode: If the control is attempting a
retry of a fault, the status LED will slow flash
(slow flash = one flash every 2 seconds) to
indicate the control is in the process of
retrying.
FIELD CONFIGURATION OPTIONS
Note: In the following field configuration
options, jumper wires should be clipped
ONLY when power is removed from the
CXM control.
Water Coil Low Temperature Limit
Setting: Jumper 3 (JW3-FP1 Low Temp)
provides field selection of temperature limit
setting for FP1 of 30°F or 10°F (refrigerant
temperature).
Not Clipped = 30°F, Clipped = 10°F
HTV/HTD/HTH SERIES
CXM CONTROLS
Air Coil Low Temperature Limit Setting:
Jumper 2 (JW2-FP2 Low Temp) provides
field selection of temperature limit setting for
FP2 of 30°F or 10°F (refrigerant
temperature). Note: This jumper should
only be clipped under extenuating
circumstances, as recommended by the
factory.
Not Clipped = 30°F, Clipped = 10°F
Alarm Relay Setting: Jumper 1 (JW1-AL2
Dry) provides field selection of the alarm
relay terminal AL2 to be jumpered to 24VAC
or to be a dry contact (no connection).
Not Clipped = AL2 connected to R.,
Clipped = AL2 dry contact (no
connection).
DIP SWITCHES
Note: In the following field configuration
options, DIP switches should only be
changed when power is removed from the
CXM control.
DIP Switch 1: Unit Performance Sentinel
Disable - provides field selection to disable
the UPS feature.
On = Enabled. Off = Disabled.
DIP Switch 2: Stage 2 Selection - provides
selection of whether compressor has an "on"
delay. If set to stage 2, the compressor will
have a 3 second delay before energizing.
Also, if set for stage 2, the alarm relay will
NOT cycle during test mode.
On = Stage 1. Off = Stage 2.
DIP Switch 3: Not Used.
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