Sterling RF-75 User Manual

(S) DSLPRFM-1J30-06933 Rev. AINSTALLER'S RESPONSIBILITYInstaller Please Note: This equipment has been test fired and inspected. It has beenshippe

10ELECTRICAL CONNECTIONS (continued)Figure 9 - Tubular Propeller Units Equipped with a Rollout SwitchTubular 30 thru 90 Unit Sizes with Natural and Pr

11VENTING*All unit heaters must be vented! All Venting installations shall be in accordance with the latest edition of Part 7,Venting of Equipment of

12VERTICALLY VENTED UNIT HEATERS(CATEGORY I)Observe the following precautions when venting the unit:The unit heater shall be connected to a factory bu

13Minimum Clearances forTermination LocationsStructureVent SystemsTermination Clearance RequirementsDoor, window or any gravity vent inletForced air i

14Table 4 - Category I Horizontal Venting RequirementsVent Maximum Number Maximum Horizontal Minimum ExtensionUnit Diameter Elbows Vent Length Vertica

15Figure 14 - Vent SupportD- 06839A

16HORIZONTALLY VENTED UNIT HEATERS (CATEGORY III)All venting of residential tubular unitheaters must comply with the latestedition of CSA .10.96 (2nd

17Figure 15 - Category III Horizontal Venting Requirements Using Single Wall Vent PipeFigure 15A - Category III Horizontal Venting Requirements Using

18Figure 16Figure 17VENTING (continued)

19VENTING (continued)Figure 18Figure 19

2TABLE OF CONTENTSThe following terms are used throughout this manual, in addition to the ETL requirements to bring attention to thepresence of potent

20OPERATIONPOWER VENTED PROPELLER UNITSDIRECT SPARK IGNITIONEXPLANATION OF CONTROLS (See Figure 20):1. Each Unit Heater comes equipped with a power ve

21PRIMARY AIR SHUTTER ADJUSTMENTPrimary air adjustment is made at the factory. No field adjustments are necessary.GAS INPUT RATECheck the gas input r

229.39.29.08.98.78.58.38.1NATURAL GASMAINTENANCE3. Remove service panel.4. To clean or replace the burners, remove the fourscrews holding the manifold

231.Check with local gas supplier for proper orificesize and replace. Refer to “Operation”.1. Replace orifice.2. Test and reset manifold pressure.1. C

241. Relocate thermostat away from outsidewall or drafts.2. Check thermostat circuit for open and closeon terminal strip on heater “R” and “W”.3. Chec

251. Incorrect manifold pressure or input.2. Air throughput too high.1. Unit is over fired.2. Air flow is low.3. Defective switch.4. Defective control

26No Cycling or appliance poweror thermostat call for heatsince appliance failure hasoccured.Line voltage power cancause product damage,severe injury

27IDENTIFICATION OF PARTSRESIDENTIAL TUBULAR 30-90 MBH UNIT SIZES1Vestible Panel/Tube Ass’y(Heat Exchanger)2 Manifold Bracket Sub-Ass’y3 Manifold4 Ins

28IDENTIFICATION OF PARTSRESIDENTIAL TUBULAR 30-90 MBH UNIT SIZESFigure 23 - Internal Furnace ComponentsFigure 21 - Propeller Parts Figure 22 - Compon

29HOW TO ORDER REPLACEMENT PARTSPlease send the following information to your local representative: if further assistance is needed, contact themanufa

3GENERAL SAFETY INFORMATION Failure to comply with the generalsafety information may result in extensiveproperty damage, severe personal injury, ordea

30Customer ____________________________________ Job Name & Number _________________________PRE-INSPECTION INFORMATIONWith power and gas off.Typ

4Table 1 - Performance and Dimensional Data - Tubular 30 thru 90 Propeller Unit HeaterFigure 2 - Dimensional Drawing – Tubular 30 thru 90 Propeller Un

5INSTALLATION Do not install unit heaters incorrosive or flammable atmospheres! Prematurefailure of, or severe damage to the unit willresult! Avoid l

6INSTALLATION (continued)The Unit Heater may be mounted byfastening the hanging brackets directlyto ceiling joists or by suspending fromfour rods. See

7GAS PIPING To avoid damage or possible personal injury, do not connect gas piping to this unituntil a supply line pressure/leak test has been complet

8 Do not over tighten the inlet gaspiping into the valve. This may cause stresses thatwill crack the valve!NOTICE: Use pipe joint sealant resistant to

9ELECTRICAL CONNECTIONSTHERMOSTAT WIRING AND LOCATION:NOTICE: The thermostat must be mounted on avertical, vibration-free surface, free from air curre