Roberts Gorden 400, 200, 350, 150, 300, 175, 225 250 service manual Burner Compartment, Burner Injectors

COMBAT® UHA UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL

14.2 Burner Compartment

The burner compartment is a sealed compartment. Following any work, re-seal the compartment with the gas pipe rubber seal fully in place and all screws fitted and tight.

Burner compartment

cover

Flame probe

Viewing port

for flame probe

Remove flexible

air duct from spigot

Ignition electrode

NOTE: Flexible duct only applies

for models UHAS.

Viewing port

for ignition electrode

Remove

access plate Rubber Seal

Remove screws and pull off burner cover

14.2.1 Burner Injectors

Ensure gas tight fitting of injectors.

Ensure correct alignment with burners.

Ensure all pipe joints are gas tight.

	UHA[S]	UHA[S]	UHA[S]	UHA[S]	UHA[S]	UHA[S]	UHA[S]	UHA[S]
MODEL	150	175	200	225	250	300	350	400
Orifice Quantity	7	8	9	10	11	12	14	14
Natural Gas (G20)
Orifice Marking	43	43	2.25 mm	2.25 mm	2.25 mm	40	40	40
P/N	91930043	91930043	91930225	91930225	91930225	91930040	91930040	91930040
Propane (G31)
Orifice Marking	1.35 mm	1.35 mm	54	54	54	1.45 mm	53	53
P/N	91930135	91930135	91930054	91930054	91930054	91930145	91930053	91930053

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