Sterling TC User Manual
Page 2

2
TABLE OF CONTENTS
The following terms are used throughout this manual, in addition to the ETL requirements to bring attention to the 
presence of potential hazards, or to important information concerning the product:
Indicates an imminently hazardous
situation which, if not avoided, will result in 
death, serious injury, or substantial property 
damage.
 
Indicates an imminently hazard-
ous situation which, if not avoided, could result 
in death, serious injury, or substantial property 
damage.
Indicates an imminently hazardous
situation which, if not avoided, may result in minor 
injury or property damage.
NOTICE: Used to notify of special instructions on 
installation, operation, or maintenance which are 
important to equipment but not related to personal 
injury.
DESCRIPTION………………. ....................................... 2
GENERAL SAFETY INFORMATION
 Installation Codes………………………………… 2, 3
 Special Precautions………………………………. 2, 3
PERFORMANCE AND DIMENSIONAL DATA .............. 4
INSTALLATION
 Locating Units………………………………………… 5
 Combustion Air……………………………………… . 5
 Heat Throw Data……………………………………. . 6
 Clearances…………………………………….. ......... 7
 Suspension of Units………………………………. .... 7
 Gas Piping……………………………………… ........ 8
 Pipe Installation……………………………………. ... 9
BLOWER SET UP AND ADJUSTMENT……………... 10
 
MOTOR AND PULLEY .............................................. 11
ELECTRICAL CONNECTIONS…………………. ...12-16 
VENTING ..............................................................17-21 
OPERATION
 Explanation of Controls…………………………… . 22
 Start-Up, Shut Down………………......…………....22
 Main Burner Orifi ce Schedule…………….……….23
 Gas Input Rate and Adjustments…………….. 23, 24
TROUBLESHOOTING GUIDE ..............................25-28
 
LED Indicator Troubleshooting .............................. 29
MAINTENANCE… ...................................................... 30
WARRANTY…............................................................ 31
IDENTIFICATION OF PARTS ................................32-33
UNIT NUMBER DESCRIPTION ................................. 35
START-UP INSPECTION SHEET ............................... 36
NOTICE: It is the equipment owners responsibility to provide any scaffolding or other apparatus required to 
perform emergency service or annual/periodic maintenance to this equipment.
DESCRIPTION
The Power Vented Gas Fired Blower Unit Heaters are 
factory assembled, high static pressure type, centrifugal 
blower units designed for heavy duty applications such 
as continuous operation or where a single unit heater 
must do the entire heating job in a large area.These 
blower type unit heaters may be used with the standard 
adjustable louvers, with short duct runs or discharge 
nozzles for spot heating. These blower type unit heaters 
may be used where low sound levels are required. The 
designs are certified by ETL as providing a minimum 
of 83% thermal efficiency, and approved for use in 
California. Do not alter these units in any way. If you 
have any questions after reading this manual, contact 
the manufacturer.
Figure 1 - Tubular Blower Unit Heater
See Identifi cation of Parts, Figures 12 through 18.
