Emerson 36H User Manual

 Gas Valve Cross Reference   

Gas flow to the pilot burner is controlled by a safety valve which 

is manually operated and held in by current generated from a 

thermocouple placed in the pilot flame.  When the thermostat 

calls for heat the main valve is energized.

The thermostat calls for heat and simultaneously energizes the 

pilot valve and the Proven Pilot control. Sparking from the ignition 

electrode to the pilot burner ignites the gas at the pilot burner. 

Flame is sensed by the flame detection circuit which energizes 

the main valve. Main burner gas is ignited and sparking ceases 

once a pilot flame is detected.

THERMOSTAT

LIMIT

HOT

LINE VOLTAGE

120 VAC

NEUTRAL

COMMON (“C”)

W

R

25 VAC

H.V. LEAD

IGNITION

ELECTRODE

(PILOT)

SENSE

ELECTRODE

T

H

P

V

M

V

C
P

M

M

V

P

V

T

R

G

N

D

F

P

LINE VOLTAGE

LOW VOLTAGE

OF

F

PIL

OT

ON

TR

TH

TR

TH

PILOT

ADJ.

Thermostat

TH, TH-TR to Thermostat

TH-TR, TR to Transformer

Line

24 VAC

Hot

Transformer

Electrical Cut Out (E.C.O.) Switch or 

Supplementary Limit in appliance

R

W

NOTE: If appliance does not 

have E.C.O. Switch 

or supplementary limit, 

jumper E.C.O. terminals

Jumper

Power Unit

ECO Terminals (

2)