Sterling SC User Manual

08/13STBII-3J30-09053Unit No.Serial No.ATTENTION: READ THIS MANUAL AND ALL LABELS ATTACHED TO THE UNIT CAREFULLY BEFORE ATTEMPTING TO INSTALL, OPERATE

10 Never operate the unit beyond the specified limits or severe damage to, and or premature failure of, the unit will result!BLOWER SET UPThe drive ra

11IVL442.8-3.8AK514.7Turns OpenIVL341.9-2.9AL646.0AL747.0AL848.0AK565.2AL10410.0MOTOR PULLEYS BLOWER PULLEYSPulley Table 1725 RPM Motors (1/3 to 2 H.P

12HAZARDOUS VOLTAGE! DISCONNECT ALL ELECTRIC POWER INCLUDING REMOTE DISCONNECTS BEFORE SERVICING. Failure to disconnect power before servicing can cau

13ELECTRICAL CONNECTIONS (continued)Figure 6d - Separated Combustion Tubular Blower Units 100-150 with Single Stage Ignition,

14ELECTRICAL CONNECTIONS (continued)Figure 6e - Separated Combustion Tubular Blower Units 100-150 with Two Stage Ignition,

15ELECTRICAL CONNECTIONS (continued)Figure 6f - Separated Combustion Tubular Blower Units 175-400 with Single Stage Ignition, Natur

16ELECTRICAL CONNECTIONS (continued)Figure 6g - Separated Combustion Tubular Blower Units 175-400 with Two Stage Ignition, Natural

17VENTINGObserve the following precautions when venting the unit:1. Use flue pipe of the same size as the flue connections on the gas unit heater (Se

18Horizontal venting arrangements are designed to be used with single wall vent pipe. Horizontal venting arrangements must terminate external to the b

19VENTING (continued)COMBUSTION AIR VENTING AND PIPING Never operate unit heaters without combustion air and fl ue gas piping in place or severe pers

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

20VENTING (continued)5. Any run of single wall vent pipe passing through an unheated space must be insulated with an insulation suitable to 550°

21Figure 8B - Horizontal Arrangement - Single Wall Vent System to Single Wall Termination

22Figure 9A - Vertical Arrangement - Single Wall Vent System to Double Wall Termination

23OPERATIONSEPARATED COMBUSTION BLOWER UNITS DIRECT SPARK IGNITIONEXPLANATION OF CONTROLS:1. The unit heater is equipped with a power vent system tha

24OPERATIONPRIMARY AIR SHUTTER ADJUSTMENTPrimary air adjustment is made at the factory. No fi eld adjustments are necessary.GAS INPUT RATE2. PROPANE G

25TUBULAR UNIT HEATER HIGH ALTITUDE DERATIONThis Tubular Unit Heater has been manufactured utilizing standard burner orifi ces and a normal manifold pr

26Table 9 - Separated Combustion Tubular Blower Troubleshooting GuideSYMPTOMS POSSIBLE CAUSE(S) CORRECTIVE ACTIONA. Flame pops back. 1. Burner orifi ce

27Table 9 - Separated Combustion Tubular Blower Troubleshooting Guide (continued)SYMPTOMS POSSIBLE CAUSE(S) CORRECTIVE ACTIONH. Condensation. 1. Impr

28Table 9 - Separated Combustion Tubular Blower Troubleshooting Guide (continued)SYMPTOMS POSSIBLE CAUSE(S) CORRECTIVE ACTIONN. Not enough heat. 1. In

29Table 9 - Separated Combustion Tubular Blower Troubleshooting Guide (continued)SYMPTOMS POSSIBLE CAUSE(S) CORRECTIVE ACTIONS. Power ventor will not

3GENERAL SAFETY INFORMATION Failure to comply with the general safety information may result in extensive property damage, severe personal injury, or

30Table 9A - Separated Combustion Tubular Blower Troubleshooting with LED Indicator AssistanceNo Cycling or appliance power or thermostat call for hea

31MAINTENANCEPERIODIC SERVICE2. Turn off the manual gas valve and electrical power to the unit heater.3. To clean or replace the burners, remove bur

32LIMITED WARRANTYSeparated Combustion Tubular Blower Unit Heaters1. The "Manufacturer" warrants to the original owner at original installa

33IDENTIFICATION OF PARTS SEPARATED COMBUSTION BLOWER UNIT HEATERSFigure 13 - Vestibule Panel / Tube Assembly Figure 14 - Electrical Control Panel Ass

34Figure 15 - Power Venter Assembly (100/250 Unit Sizes Shown)Figure 17 - Turbulator/High Limit LocationFigure 16 - Power Venter Assembly (300/400 Uni

35SEPARATED COMBUSTION TUBULAR BLOWERUNIT NUMBER DESCRIPTIONDIGIT T X X X –1234567891011121314+ITEM PREFIX UT CA FT FM GT AL GC SV MT MS AS(Internal U

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

4Table 1 - Performance and Dimensional Data - Separated Combustion Tubular Blower Unit HeaterUnit Capacity (MBH) 100 125 150 175 200 250 300 350 400PE

5INSTALLATION Do not install unit heaters in corrosive or fl ammable atmospheres! Premature failure of, or severe damage to the unit will result! Avoid

6INSTALLATION (continued)Table 2 - Heat Throw DataStandard Heater 30° Nozzle 60° Nozzle 90° NozzleDegree of NozzleDistance From Floor to Bottom of Uni

7Figure 3A - Heater Mounting**All hanging hardware and wood is not included with the unit (To be fi eld supplied).NOTE: Threaded rod is 3/8".Figur

8 To avoid damage or possible personal injury, do not connect gas piping to this unit until a supply line pressure/leak test has been completed. Conne

9INSTALLATION (continued)Figure 4 - Pipe Installation, Standard Controls Never use an open fl ame to detect gas leaks. Explosive conditions may exist w