Reznor RA 140 Troubleshooting Guide download pdf (Page 18)

Form I-RA/D 140/235 (Version A), Page 18

Heating

Thermostat

Pump Power

Installation

Pump Power

To connect the electrical power from the heater to the pump,

• Use a 3 conductor, 14 gauge wire system - two 115 volt conductors

and a ground. Use BX if permitted, but make certain to follow

local codes for running conduit.

• Refer to the wiring diagram for connecting terminals.

Heater Power Installation

DANGER: Make sure that the main circuit is OFF before making any wiring

connections. All wiring must be done in accordance with appropriate Codes!

Main Power

To install main power to the system (check the table below and the rating

plate on the furnace for current requirements),

• Use #12 gauge stranded copper wire for RA and #8 gauge for RAD to

run a dedicated 115 volt, single phase, line from the power source to a

junction box mounted on the wall behind the heater or as required by

appropriate codes.

• Run the length of appropriate conduit from the heater to the junction

box.

• Connect the black wire to the hot lead.

• Connect the white wire to the neutral lead.

• Connect the green wire to the ground lead.

• Install a fused manual reset, line voltage switch (field supplied) in this

main line

• Electrical Ratings

A 24-volt thermostat is furnished as standard equipment.

DO NOT attempt to wire relays or other accessories to the thermostat con-

nections as these are not load terminals.

DO NOT install on or suspend the thermostat from the heater

DO NOT install thermostat on a cold outside wall

To install the thermostat,

• Locate the thermostat five feet above the floor on an inside wall,

not in the path of warm or cold air currents nor in corners where air

may be pocketed

• Remove the thermostat cover

• Make sure the heat anticipator dial is set at 0.2 amps

• Connect the wires through the back of the thermostat to the R & W

terminals

• Set the ON/OFF switch on the heater electrical box to the “OFF”

position and connect the thermostat wires to the two “T” terminals

on the ignition controller.

Total Minimum Maximum

Current Circuit Fuse Size

Model Amperes Ampacity (Supply)

RA140 13 16 20

RAD140 24 30 40

RA235 14 18 20

RAD235 24 30 40

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 51 52

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Reznor RA 140 Troubleshooting Guide Page 18

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