Troubleshooting guide

MAGNUM VERSION 8 MANUAL REVISION 3.1
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When this option is selected the Reheat Relay Outputs must be setup as follows:
These Hot Gas Reheat relays are required and they must be placed in the proper sequence to work
correctly.
The following Setpoints must be active: #129 “RH CUTIN”, #130 “RH CUTOUT ADJ”, #131 “RH START
DLY”, #132 “RH BLEED DLY”, #133 “RH STAGE DLY”.(see Section 13 for full Setpoint descriptions).
Hot Gas Reheat sequence of operations:
(The names in the above example will be used to indicate the status of the relays: 1-6 REHEAT, 1-7 R-
Hvalve, and 1-8 R-Hbleed)
Condition 1-6 REHEAT 1-7 R-Hvalve 1-8 R-Hbleed
The reheat state is OFF. The compressor is running and the RH TEMP
is greater than Setpoint #129 plus #130.
ON OFF OFF
The reheat state is STARTING. The compressor is running and the RH
TEMP is less than Setpoint #129. It will remain in this state until the
time is greater than Setpoint #131, and then will move to the ON state.
ON ON ON
The reheat state is ON. The reheat will remain in this state until the
reheat temperature is greater than Setpoint #129 plus #130. When the
temperature is greater the state will be changed to BLEED.
OFF ON ON
The reheat state is BLEED. It will remain in this state until the time is
greater than Setpoint #132, it will then move to the OFF state.
ON OFF ON