Sterling QVF 175 - User Manual

INSTALLATION INSTRUCTIONS & PARTS LIST
STERLING GAS FIRED PROPELLER UNIT HEATERS
(S) IIPLM-20
J30-05367
Model No.
Serial No.
FOR YOUR SAFETY
The use and storage of gasoline or other ß ammable vapors and liquids in open containers in
the vicinity of this appliance is hazardous.
FOR YOUR SAFETY
If you smell gas :
1 . Open w indo w s.
2. Don Õ t touch electrical s w itches.
3. E x tinguish any open ß ame.
4 . Immediately call your gas supplier.
ATTENTION: READ THIS MANUAL AND ALL LABELS ATTACHED TO THE UNIT CAREFULLY BEFORE
ATTEMPTING TO INSTALL, OPERATE OR SERVICE THESE UNITS! CHECK UNIT DATA PLATE FOR TYPE OF
GAS AND ELECTRICAL SPECIFICATIONS AND MAKE CERTAIN THAT THESE AGREE WITH THOSE AT POINT OF
INSTALLATION. RECORD THE UNIT MODEL AND SERIAL No.(s) IN THE SPACE PROVIDED. RETAIN FOR FUTURE
REFERENCE.
INSTALLER'S RESPONSIBILITY
Installer Please Note: This equipment has been test fired and inspected. It has been
shipped free from defects from our factory. Ho w ever , during shipment and installation ,
problems such as loose w ires , lea k s or loose fasteners may occur. It is the installer's
responsibility to inspect and correct any problems that may be found.
Install, operate and maintain unit in accordance with manufacturer's
instructions to avoid exposure to fuel substances or substances from incomplete
combustion which can cause death or serious illness. The state of California
has determined that these substances may cause cancer, birth defects, or other
reproductive harm.
Improper installation, adjustment, alteration, service or maintenance
can cause property damage, injury or death. Read the installation, operating and
maintenance instructions thoroughly before installing or servicing this equipment.
APPROVED FOR USE IN CALIFORNIA WHEN EQUIPPED WITH SPARK IGNITION.
RECEIVING INSTRUCTIONS
Inspect shipment immediately w hen
received to determine if any damage
has occurred to the unit during
shipment. After the unit has been
uncrated , chec k for any visible
damage to the unit. If any damage
is found , the consignee should sign
the bill of lading indicating such
damage and immediately file claim
for damage w ith the transportation
company.
260 NORTH ELM ST. , W ESTFIELD , MA 0 1 0 8 5
TEL : ( 41 3) 56 4 -55 4 0 FA X : ( 41 3) 562-53 11
www .sterlinghvac.com
MODELS : QV F (30 , 4 5 , 60 , 75 , 1 00 , 1 25 , 1 50 ,
1 75 , 200 , 225 , 250 , 300 , 350 , 4 00) (S , M)
1 0 / 07
HVAC PRODUCTS

Summary

INITIAL SAFETY AND HANDLING

Installers Responsibility

Installer must inspect and correct any issues during shipment or installation.

Receiving Instructions

Inspect unit immediately for any damage that occurred during shipment.

GENERAL SAFETY INFORMATION

Critical Safety Warnings

Essential warnings cover installation, operation, fuel, grounding, and environmental hazards.

INSTALLATION GUIDELINES

Mounting Height & Clearances

Specifies minimum mounting heights and clearances from combustible materials.

Location-Specific Installation

Guidelines for aircraft hangars, public garages, and parking structures.

Air Distribution Strategy

Directs airflow to areas of maximum heat loss, avoiding obstructions.

INSTALLATION DETAILS

Combustion Air Requirements

Details air needs for combustion and requirements for tight buildings.

GAS SUPPLY PIPING

Pipe Sizing and Pressure

Instructions for determining gas pipe size based on input and length, and managing pressure.

PIPE INSTALLATION PROCEDURES

Gas Connection Standards

Procedures for connecting gas piping, including shutoff valves and test ports.

VENTING REQUIREMENTS

Venting Safety and Installation

Essential safety and installation guidelines for proper venting of flue gases.

ELECTRICAL CONNECTIONS

Thermostat Installation and Wiring

Guidance on mounting and wiring thermostats for optimal control.

Control System Adjustments

Instructions for setting heat anticipators and fan time delay controls.

UNIT OPERATION - STANDING PILOT

Controls Overview (Standing Pilot)

Describes the functions of the gas control valve, limit switch, and fan switch.

Pilot Lighting Procedure

Step-by-step instructions for safely lighting the pilot burner and starting the unit.

Unit Shut-Down Procedure

Procedure for safely turning off the unit heater.

UNIT OPERATION - SPARK IGNITION

Controls Overview (Spark Pilot)

Details the dual automatic gas valve and electric ignition system.

Spark Ignition Start-Up

Steps for starting the unit using the spark ignition system.

GAS INPUT AND BURNER TUNING

Gas Input Rate Verification

How to calculate and verify the unit's gas input rate.

Primary Air Shutter Adjustment

Procedure for adjusting the air shutter for optimal burner flame.

MAINTENANCE AND SERVICE

Pilot and Pressure Adjustments

Guides for adjusting pilot flame size and manifold gas pressure.

Routine Maintenance Tasks

Steps for cleaning, inspection, and servicing the unit's components.

PARTS IDENTIFICATION

Component Diagrams

Visual identification of key unit parts and assemblies through diagrams.

TROUBLESHOOTING GUIDE

Symptom-Based Solutions

Lists common operational issues and their solutions for gas unit heaters.

SUPPORT AND WARRANTY

Ordering Replacement Parts

Information required to order replacement parts from the manufacturer.

Limited Warranty Policy

Details the terms and conditions of the product's limited warranty.

GAS EQUIPMENT START-UP PROCEDURE

Pre-Operation Checks

Ensures the unit is ready for operation with power and gas off.

Operational Checks

Verifies proper operation of heating functions and the blower with power and gas on.

Sterling QVF 175 Specifications

General

Brand	Sterling
Model	QVF 175
Category	Gas Heater
Language	English