AEG CGA 75 WOK Specifications download pdf (Page 29)

29UH-PRC002-EN

Electric

Power

Sequence of Operation

Typical wiring diagrams and sequence of

operations for indoor units with

intermittent pilot ignition are shown

below. On duct furnaces, the fan motor

and associated controls shown in the

wiring diagrams are not integral to the

unit. It is essential, however, that the air

handling system be interlocked with the

duct furnace to prevent duct furnace

operation without airflow.

Single-Stage Control

With power applied to the unit:

1

The thermostat calls for heat.

2

The pilot valve opens.

3

The ignitor sparks continuously to ignite

the pilot.

4

The sensor proves pilot ignition and

shuts off the ignitor.

5

With the pilot lit, the main gas valve

opens.

6

Main burners are lit at 100 percent of

unit’s rated input.

7

The fan time delay relay (optional on

duct furnaces) allows the heat exchanger

to come up to operating temperature. At

this time, the fan time delay relay closes

and activates the fan motor.*

8

The unit continues to fire until the

thermostat is satisfied and no longer

calls for heat.

9

The main and pilot valves close.

10

The fan time delay relay remains closed,

keeping the fan operating to dissipate

residual heat from the heat exchanger. At

this time, the fan time delay relay opens

and deactivates the fan motor.

NOTE: This unit is equipped with a

blocked vent shutoff (spill) switch. If the

venting system becomes blocked or

there is continuous spillage, the vent

shutoff switch will shut off the unit

heater.

*See Fan Controls on page 27.

• Caution - Disconnect power before

servicing.

• Unit must be grounded.

• Use copper conductors only.

• If any of the original wire as supplied

with the appliance must be replaced, it

must be replaced with wiring material

having a temperature rating of at least

125°C.

• Refer to installation instructions for

venting, gas piping and start-up

procedures.

• - - - Indicates Field Wiring.

• ___ Indicates Factory Wiring.

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