Sterling GG-90 Unit Type UT, Capacity CA, Supply Voltage SV, Motor Type MT, Furnace Type FT

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Low Profile Tubular Gas-Fired Unit Heater Model Number Description

Digit

Item

G X X

X

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Prefix

 

UT

 

CA

 

FT

FM

GT

AL

GC

SV

MT

DL

 

AS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Internal use Only)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1, 2 - Unit Type [UT]

GG - Residential Tubular Propeller UH

3, 4, 5 - Capacity [CA]

030 - 30,000 BTU/HR

045 - 45,000 BTU/HR

060 - 60,000 BTU/HR

075 - 75,000 BTU/HR

090 - 90,000 BTU/HR

105 - 105,000 BTU/HR

120 - 120,000 BTU/HR

11 - Supply Voltage [SV]

1 - 115/1/60

4 - 208/3/60

7 - 575/3/60

2 - 208/1/60

5 - 230/3/60

Z - Other

3 - 230/1/60

6 - 460/3/60

 

Note: Supply Voltage [SV] 2 thru 7 includes a field mounted step down transformer.

12 - Motor Type [MT]

1 - Open Drip Proof (Standard)

2 - Totally Enclosed [Capacities 060 through 120 Only]

6 - Furnace Type [FT]

A - Right Hand Access

7 - Furnace Material [FM]

1 - Aluminized Steel (Standard)

2 - 409 Stainless Steel

8 - Gas Type [GT]

N - Natural Gas

P - Propane (LP) Gas

9 - Altitude [AL]

P - Canadian Hi-Alt. 2000-4500 Ft.

S - 0-4999 Ft.

T - 5000-11,999 Ft.

Note: Unit installations over 2000 ft. require gas input deration in the field. Refer to unit installation instructions.

10 - Gas Control [GC]

A - Single Stage (Standard)

B - Two Stage (CA = 060 through 120 Only)

13 - Development Level [DL]

A - Revision Level - Production Onset

14, 15 + - Accessories [AS]

FACTORY INSTALLED

S3 - Stainless Steel Flue Collector

Z1 - Special

FIELD INSTALLED (AS-____)

A7 - Pressure Regulator (1/2 - 2 psi)

G1 - 1 Stage 87K Mercury Free Thermostat

G2 - 1 Stage 87K Mercury Free Thermostat w/TG511A Guard Kit G3 - 1 Stage T834N Mercury Free Thermostat/Fan Switch

G5 - 2 Stage TH5220D Mercury Free Thermostat w/Subbase

G6 - Locking Thermostat Cover

G8 - 1 Stage T6169C Line Voltage Thermostat w/Subbase

G9 - 1 Stage T822K Mercury Free Thermostat

P5 - 24V SPST Relay - Specify Purpose

VC-4 - 4" Vent Cap

VC-5 - 5" Vent Cap [Capacity 075-120 Category I Horizontal Vent Only]

X7-4 - Concentric Vent Kit [Capacities 030-075)

X7-5 - Concentric Vent Kit [Capacities 090-120]

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Contents Tubular GAS Fired Direct Spark Propeller Unit Heaters Receiving InstructionsTable of Contents DescriptionGeneral Safety Information Performance DATA† Page Installation Installation GAS Piping Pipe SizingGas Pipe Size Pipe Installation Gas Piping RequirementsThermostat Wiring and Location Electrical ConnectionsElectrical Connections Electrical Connections Electrical Connections Electrical Connections Electrical Connections Additional Requirements for Canadian Installations VentingVenting into an unlined masonry chimney is prohibited Venting General Guidelines Venting CategoriesStandard Combustion Vertically VENTED, Category I FigureCategory I Horizontal Venting Requirements Vent Support Horizontally VENTED, Category III Figure Vertically VENTED, Category III Type B Draft Hood Connector Venting Venting Carbon Monoxide Separarted Combustion Installation Venting CategoryCombustion AIR Venting and Piping Exhaust VentingConcentric Vent Box Dimensions Separated CombustionConcentric Vent Installation Horizontal Intake/Vent Installation Vertical Termination AIR Inlet CollarExhaust AIR Collar Horizontal TerminationOperation Explanation of Controls See FigureShut Down Main Burner Orifice Schedule Primary AIR Shutter AdjustmentGAS Input Rate Tubular Unit Heater High Altitude DerationPeriodic Service Never over oil the motor or premature failure may occurTubular Propeller Troubleshooting Guide Symptoms Possible Causes Corrective ActionRealign power venter wheel Check operation of switch, did the switch LED Status Indicates CHECK/REPAIR Pattern Status CHECK/REPAIR ItemDescription Propeller Parts HOW to Order Replacement Parts 5 Capacity CA 14, 15 + Accessories ASUnit Type UT Supply Voltage SVPRE-INSPECTION Information With power and gas offWith power and gas on GeneralHvac Products