Engineered air DG series Manual de usuario descargar pdf (Pagina 23)

A G-TRAC MANUAL

Page 18 Revised: 03/17/99

CHECK OUT FOR G-TRAC-1 NORMAL OPERATION

**Following flow chart covers many general operating/troubleshooting situations. If a more detailed manual is needed, contact the nearest EngA

Factory.

24 VAC power to terminals H and N

Is 24 VAC preset on ‘HS” and N?

Yes No

Supply fan should start within 34 sec. if

supply fan controlled by “SA” terminal

Yes No

Heat call light is ‘ON’?

Yes No

Normal summer operation

- Faulty G-TRAC-1, or

- Motor faulty

- Low limit open or faulty

- Belt broken

Controller not calling for heat. Supply

fan should come on within 34 sec.

Yes No

Normal operation. If heat light comes on

within 2 min. of fan starting, fan may shut

off while burner prepares for pre-purge.

- Pre-purge light and heat call light

should both be ‘ON’,

- Burner is in pre-purge mode up to 7

min.

- Burner enabled light should come on

and burner should fire and modulate

the gas valve.

Is burner enable light coming on

after 7 minutes?

Yes No

Normal operation Faulty G-TRAC

Does gas valve modulate up or down

when set point is turned up or down?

Yes No

Disconnect R, B, W on V9055 modulating

gas valve and jumper R to B. Valve should

go to high fire. If it doesn’t, valve is faulty.

- Air switch must be

open before heat call.

- After A/S closes

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Engineered air DG series Manual de usuario Pagina 23

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