White Rodgers 921 User Manual

6

A typical system wiring diagram is shown below. Use the 
water heater manufacturer’s wiring diagram for details of the 

installation. Always follow the instructions supplied with the 
water heater, and those of the water heater manufacturer.

HIGH

LIMIT

SWITCH

AIR

PRESSURE

SWITCH

COMBUSTION

BLOWER

BLACK

WHITE

GREEN

TO POWER SUPPLY

DISCONNECT

AND OVERLOAD

PROTECTION

IGNITOR AND

FLAME PROBE

ASSEMBLY

INSET

Intelli-Vent

™

 Wiring Diagram

Typical Installation

(Consult Appliance Manufacturer's Instructions For Details)

BOTTOM VIEW

INTELLI-VENT     CONTROL

TM

FLAMMABLE

VAPOR

SENSOR

(IF EQUIPPED)