Sterling RF-75, RF-60, RF-90, RF-45, RF-30 specifications ItemDescription

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IDENTIFICATION OF PARTS

RESIDENTIAL TUBULAR 30-90 MBH UNIT SIZES

	Item
	No.	ItemDescription

	1	Vestible Panel/Tube Ass’y
	1	(Heat Exchanger)
		(Heat Exchanger)

	2	Manifold Bracket Sub-Ass’y

	3	Manifold

	4	Inshot Burner

	5	*Standard Orifice
	5	Natural Gas or Propane (LP) Gas
		Natural Gas or Propane (LP) Gas

	6	Spark Ignitor

	7	Flame Sensor

	8	Gas Valve, Single Stage
	8	Natural or Propane (LP) Gas
		Natural or Propane (LP) Gas

	9	Manual Rollout Safety Switch

	10	Transformer, 50 VA, 115/24

	11	Air Pressure Switch

	12	Terminal Block Plate

	13	High Limit Switch
	13	w/Mounting Bracket
		w/Mounting Bracket

	14	Fan Motor

	15	OSHA Fan Guard

	16	Standard Fan

	17	Fan/Guard/Motor Mount
	17	Hardware Kit
		Hardware Kit

	18	**Flue Collector

	19	Power Venter (Drafter) Ass’y

	20	Flue Collar Ass’y

	21	Vinyl Tubing (Pressure Switch)

	22	Power Venter Mounting Plate

	23	Louver

	24	Louver Spring

	25	Control Board

	26	Service Panel

	27	Top Jacket Panel w/Insulation

	27	Bottom Jacket Panel w/Insulation

	29	Front Jacket

	30	Rear Jacket

	31	Front Hanger

	31	Rear Hanger

	32	Tube Support Bracket

	33	Green Ground Screw

* The orifices shown are for units operating at normal altitudes of 0 to 2000 ft. (610m).

** When replacing a flue collector, make sure that the flue collector box is sealed completely to the vestibule panel using RTV Sealant.

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Contents Receiving Instructions Tubular GAS Fired Direct Spark Propeller Unit HeatersDescription Table of ContentsGeneral Safety Information Dimensional Drawing Tubular 30 thru 90 Propeller Unit Heater Installation Installation GAS Piping Pipe SizingGas Pipe Size Gas Piping Requirements Pipe InstallationElectrical Connections Thermostat Wiring and LocationElectrical Connections Additional Requirements for Canadian Installations VentingVenting into an unlined masonry chimney is prohibited Within this manual Vertically Vented Unit Heaters CategoryVenting Categories Not apply to equipment specifiedVent Systems Termination Clearance Requirements Structure Vent Maximum Number Maximum Horizontal Minimum Extension Category I Horizontal Venting RequirementsVent Support Horizontally Vented Unit Heaters Category Type B Draft Hood Connector Venting Venting Shut Down OperationExplanation of Controls See Figure Determine and Correct the Cause of the flame roll-outTubular Unit Heater High Altitude Deration Primary AIR Shutter AdjustmentGAS Input Rate Main Burner Orifice ScheduleNever over oil the motor or premature failure may occur Periodic ServiceSymptoms Possible Causes Corrective Action Tubular Propeller Troubleshooting GuideRealign power ventor wheel Check for continuous 115v on terminal LED Status Indicates CHECK/REPAIR Troubleshooting with LED Indicator AssistanceItemDescription Propeller Parts HOW to Order Replacement Parts General With power and gas offWith power and gas on PRE-INSPECTION Information