Field Wiring - Re-Verber-Ray MP-25-80N Insert Manual

MP Series

Field Wiring

Field Supplied Control Wire: 18AWG plenum rated thermostat wire that is shielded w/ drain wire is
recommended for optimal performance.
Installing the Control Wire: Each heater includes a thermostat wire grommet to allow for thermostat wire
to be brought into the burner box. Insert the grommet into the low voltage wiring access hole. Feed the
thermostat wire through the grommet, piercing the rubber with the wire to ensure a tight seal. Ensure
enough wire length is available to make the proper connections. Tie the thermostat wire into a loose knot,
as shown in Figure 2.1. Ensure knot is loose enough to not cause any damage to the wire. This will allow
for a strain relief for the connections to the heater.
Figure 2.1 • Image for feeding the wire and showing the knot
Connections to the Heater: The control devices are connected to the Modulating Circuit Board (P/N:
TP-3250) via the thermostat terminal strips provided. The installer must select the appropriate thermostat
terminal strip to connect to the board depending on the control configuration desired. The unit will provide
the suitable voltage for each control device. DO NOT provide an external power supply to the thermostat
terminal strips. Damage to the circuit board may result and is not covered by warranty.
Three (3) thermostat terminal strips are included with each heater to allow for connections to the heater.
Note that only one terminal strip will be used for each application, as selected by the installer. The
remaining thermostat terminal strips can be discarded or kept with the manual for future reference.
• TP-3228 – 8 circuit terminal strip to be used with Diagram "A".
• TP-3225 – 5 circuit terminal strip to be used with Diagram "B".
• TP-3224 – 4 circuit terminal strip to be used with Diagram "C".
2.0 Installation • Thermostat and Other Controls • Field Wring
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