Roberts Gorden TF-250, TF-350, TF-300, TF-120, TF-200, TF-160, TF-380 service manual

				SECTION 5: MAJOR COMPONENTS
Table 3: Component Package Guide
	Tubing Length Each Side		Core Packages (2 Required)
Model	Minimum	Hot Rolled with	Aluminized with	Aluminized with
		Aluminum Reflector	Aluminum Reflector	Stainless Steel Reflector
TF-120	20' (6 m)	CP20HRS	CP20ALUM	CP20ALUMSS
TF-160	20' (6 m)	CP20HRS	CP20ALUM	CP20ALUMSS
TF-200	30' (9 m)	CP30HRS	CP30ALUM	CP30ALUMSS
TF-250	40' (12 m)	CP40HRS	CP40ALUM	CP40ALUMSS
TF-300	50' (15 m)	CP30HRS + EXP20HRS	CP30ALUM + EXP20ALUM	CP30ALUMSS + EXP20ALUMSS
TF-350	50' (15 m)	CP30HRS + EXP20HRS	CP30ALUM + EXP20ALUM	CP30ALUMSS + EXP20ALUMSS
TF-380	60' (18 m)	CP30HRS + EXP30HRS	CP30ALUM + EXP30ALUM	CP30ALUMSS + EXP30ALUMSS

Additional tubing length may be added to heater. Tubing must be heat-treated, aluminized or porcelain coated. Any additional tubing lengths are considered as vent length for length determination. Maximum venting length for minimum heater length is 45' (13.7 m) total, or 22.5' (7 m) on each tube.

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