HI-LO

Adjustment Screws

(use 3/32” Hex

Allen Wrench)

Regulator

Vent Cover

Electric

Solenoid

Coil

LO

 

HI

 

INLET

 

 

ON

1/8” NPT

 

Inlet Pressure

OFF

Tap with 3/16” Hex

Allen Wrench Plug

 

TWO-STAGE

Gas Control

GAS CONTROL VALVE

Knob

CAUTION

Never jumper these terminals. This shorts out valve coil and may burn out heat anticipator in thermostat.

Wiring LO

Terminals (3) C

HI

Ground

Terminals (2)

OUTLET

1/8”NPT

Outlet Pressure Tap with 3/16” Hex Allen Wrench Plug

15.0) ELECTRICAL CONNECTIONS

ELECTRIC SHOCK HAZARD

Disconnect electrical power and gas supply before servicing.

This appliance must be connected to a properly grounded electrical source.

Failure to do so may result in death or serious injury.

1.All electric wiring shall conform to the latest edition of the National Electrical Code (ANSI/NFPA No. 70), or the code legally authorized in the locality where the installation is made.

2.The unit must be electrically grounded in accordance with the National Electrical Code (ANSI/NFPA No. 70-latest edition). In Canada, refer to current standard C22.1 Canadian Electrical Code Part 1.

3.The wiring providing power to the heater shall be connected to a permanently live electrical circuit, one that is not controlled by a light switch.

4.The power supply to the unit should be protected with a fused disconnect switch or circuit breaker. A service switch, as required by local codes, shall be located in the vicinity of the heater (check local codes for allowable distances) and should be identified as Heater Service Switch. All electrical wiring must be located in accordance with the required Clearances to Combustibles below the heater as listed on the nameplate on the heater.

5.Connection to the power supply is provided by a 18/3 gauge x 72” long cord with grounded 3 prong plug.

6.The post purge function of the burner (fan on for 30 seconds after the call for heat) will only be enabled when using a 24 Volt thermostat. With the line Voltage thermostat post purge operation is disabled.

2-Stage Thermostat

24V 2 stage thermostat connection

 

 

 

 

 

 

 

 

HI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LO

 

 

 

 

 

 

43269060 rev A

The two stage heater terminals must

72” grounded 3 prong

only be supplied with 24V

electrical cord

Liquid tight fitting must be tight to prevent ingress of moisture

Form #43343530

 

July 08

–31–

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Gas-Fired Products N7/L7, 100, 40, 150, 175, 200 manual Electrical Connections, GAS Control Valve