SunSpan SRHS-40-20AN, SRHS-40-15AN, SRHS-40-20AL, SRHS-45-20AN, SRHS-45-20AL Installation, Operation & Maintanance Manual
...
Form SRH-IOM-1
500011
Residential Garage Heater
Installation, Operation, & Maintenance
Instruction Manual
(Mount a copy of these instructions adjacent to the heater)
MODEL IDENTIFICATION
Record the information from the product identification label here for future reference.
Heater Model No.: _________________________ Heater Serial No.: ________________________
Rating: __________ BTUH Type of Gas: Nat ___ LP/Propane ___ Date Installed ____________
FOR YOUR SAFETY
IF YOU SMELL GAS:
1. Extinguish any open FLAME.
2. Do NOT try to light any appliance.
3. OPEN windows.
4. Do NOT touch electrical switches; do
NOT use any telephone in the house.
FOR YOUR SAFETY
Do not store or use GASOLINE or other FLAMMABLE VAPORS or LIQUIDS in the vicinity of
this or any other appliance.
This unit is not to be installed in indoor living/sleeping areas.
5. CALL your gas supplier immediately
from a NEIGHTBOR’S home. Follow the
gas supplier’s instructions.
6. IF you can’t reach your gas supplier,
CALL the FIRE DEPARTMENT.
!! WARNING !!
THESE INSTRUCTIONS must be carefully read and completely understood BEFORE
attempting to install , operate, or perform maintenance service on this GAS-FIRED
APPLIANCE. Installation and Service MUST be performed by a QUALIFIED service agency,
installer, contractor, or gas supplier. Failure to comply with the manufacturer’s instructions can
result in unsafe operation, property damage, personal injury, and/or death. A gas-fired
appliance can expose you to substances in fuel or from fuel combustion which have been
determined by the State of California to cause cancer, birth defects, or other reproductive
harm. Contact factory for further information. Keep these instructions for future reference.
EXPLANATION OF HAZARD INTENSITY LEVELS
DANGER: Failure to comply WILL result in severe personal injury, death, and/or property damage.
WARNING: Failure to comply could result in severe personal injury, death, and/or property damage.
CAUTION: Failure to comply could result in minor personal injury, and/or property damage.
This manual is to be left with the owner after installation of this unit.
OWNER: Store this manual in a safe place to furnish your serviceman with the necessary
information for servicing.
QUESTIONS? Call the SunSpan factory at 1-866-664-3824.
Monday – Friday 8 a.m. to 5 p.m. Eastern Time
Copyright © 2005, SunSpan
SRH pg. 2
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WARNINGS
WARNING CAUTION
FIRE OR EXPLOSION HAZARD
Can cause property damage, severe injury or
death.
Read manual carefully before installing, or
servicing this equipment, or serious injury or
death may result.
Check minimum clearance to combustibles to
make certain that heater is in a safe location.
Combustible items located too close to the
heater could cause a serious fire hazard. In
storage areas, signs for maximum permissible
stacking height to maintain clearance from the
heater to combustible materials must be
posted adjacent to the heater thermostats or in
the absence of such thermostats in a
conspicuous location.
Operating the heater in an atmosphere
containing combustible dust or flammable
vapors is dangerous and may potentially result
in injury or death.
Heaters must be oriented in such a way as to
maintain minimum clearances to vehicles
parked underneath them.
This heater expands and contracts with each
cycle. The installation of the gas connection
and mounting hardware must accommodate
this movement; otherwise, a fire or explosion
hazard may occur.
This heater is equipped with an automatic
ignition and does not contain a pilot. DO NOT
attempt to light the burner manually, this could
result in serious personal injury or fire hazard.
MECHANICAL HAZARD
• DO NOT use high pressure to test the gas
pipes with the burner still attached. This will
cause damage to the controls within the
burner requiring them to be replaced.
If heater is being operated in an atmosphere
with a negative pressure or an atmosphere
containing contaminants, an outside
combustion air supply is required. Failure to
provide outside combustion air may allow
excessive heat to back up to the blower wheel
and bearings severely shortening service life.
• Correct inlet pressure is important to efficiency
and long lasting operation of the burner.
The burner, tubing, and accessories expand
and contract with each cycle. The system
must be installed so that the mounting
hardware and gas line will accommodate
these changes.
All models of low-intensity heaters include a
turbulator, which must be located in the last
ten (10) feet (3.0 m) of the burner tube
[exception: 15-foot (4.6 m) units have the
turbulator in the first 10 feet (3.0 m).]
Before servicing the burner or removing the
cover panel, all electrical and gas supplies
must be disconnected.
Give consideration to construction such as
partitions, storage racks, hoists, etc., and their
relation to the installation of the heater.
The heater must be installed and serviced
ONLY by trained gas installation and service
personnel.
Failure to follow these instructions may result in injury or property damage.
RH Residential Heaters shall not be used in the following environments:
• Indoor living/sleeping quarters
• Enclosed swimming pools
• Outdoors
NOTE: Contact factory if in any doubt.
IMPORTANT
• Explosion-proof environments
• Process heating
• Contaminated atmosphere applications.
SRH pg. 3
TABLE OF CONTENTS
This instruction manual may not cover all details or variations in this equipment, or cover every
possible situation to be met in connection with installation, operation, or maintenance. Should
problems arise that are not covered sufficiently in these instructions, the purchaser is advised to
contact the engineering department for further information.
SECTION TITLES – summary of information included PAGE(S)
WARNINGS – precautions and important safety information
TABLE OF CONTENTS
INSTALLATION CODES – applicable codes and warnings
CLEARANCE TO COMBUSTIBLES – minimum distances from heater to combustible objects
MOUNTING CONSIDERATIONS – minimum heater mounting heights, high altitude considerations
OVERVIEW DRAWINGS – overview of venting, suspension, location, and typical installation
BASIC SYSTEM CONFIGURATIONS – straight and U-tube configurations with component identification
COMBUSTION CHAMBERS/HEAT EXCHANGERS – components and specifications
COMBUSTION AIR SUPPLY – application, construction, dimensions, and illustrations
EXHAUST VENTING – application, construction, dimensions, and illustrations
U-TUBE INSTALLATION – suspension and orientation of U-tube heaters
2
3
4-5
6
7
8-9
10
11
12
13
14
U-BEND REFLECTOR INSTALLATION – exploded view and instructions
TUBE ASSEMBLY TIPS – helpful tips to assemble tubes
INSTALLATION – preparation and installation
ELECTRICAL SUPPLY AND THERMOSTATIC CONTROL – electrical ratings, schematics, 24 and 120 VAC
thermostat arrangements, illustrations
GAS SUPPLY AND GAS PRESSURE – gas piping, inlet and manifold pressures
STARTUP – procedures
BURNER TROUBLESHOOTING – flowchart
MAINTENANCE – basic procedures
REPLACEMENT PARTS – exploded view and part descriptions
All rights reserved. No part of this work covered by the copyrights herein may be reproduced or copied by any means:
graphic, electronic or mechanical, including photocopying, recording, taping, information storage and retrieval systems
without written permission.
15
16-17
18-19
20-21
22
23
24-25
26
27
SRH pg. 4
Initial adjustment and light-off MUST be performed by qualified,
trained, and experienced personnel familiar with combustion systems,
electrical and gas control/safety circuitry, and overall installation.
Instructions provided by the company or individual responsible for the
complete installation of the entire system take precedence over those
provided by this instruction manual. If these instructions conflict with
local codes or regulations, contact the factory at the on the cover
BEFORE start-up. The installer MUST be familiar with all of the
various requirements and is responsible for compliance with
applicable codes.
AGENCY DESIGN CERTIFICATION:
CSA International (formerly A.G.A. and CGA).
• United States: A.G.A. Requirement No. 7-89
INSTALLATION CODES (1 OF 2)
!! WARNING: READ THIS FIRST !!
• Canada: CSA 2.32a-M99
GENERAL INSTALLATION & GAS CODES:
Heater must be installed ONLY for use with type of gas appearing on
its rating plate.
• United States: In the absence of local codes, installation must
comply with the National Fuel Gas Code ANSI Z223.1 (NFPA-54) -
latest edition.
• Canada: In the absence of local codes, installation must comply
with CAN/CGA B149.1 and B149.2 Installation Codes in Canadalatest edition.
GAS SUPPLY LINES:
A 1/8 inch NPT plugged tap must be installed in the gas line
connection immediately upstream of the burner farthest from the gas
supply meter to check and confirm the system’s gas pressure.
• United States: Installation must comply with the National Fuel Gas
Code ANSI Z223.1 (NFPA-54)-latest edition.
• Canada: Installation must comply with CAN/CGA B149.1 AND
B149.2 Installation Codes in Canada-latest edition.
SRH pg. 5
INSTALLATION CODES (2 OF 2)
!! WARNING: READ THIS FIRST !!
MANUAL GAS SHUT-OFF (CANADA ONLY):
A manual shut-off valve shall be of the plug, ball, or eccentric type
and it shall not be subjected to either a temperature or pressure
greater than its certified rating. A readily accessible manual shut-off
valve shall be installed to control the supply of gas to each heater and
the valve shall be located, in either the drop or riser, as close as
possible to the valve train of a commercial or industrial type
appliance.
ELECTRICAL:
All electric work, particularly grounding, must conform with all local
requirements and:
• United States: National Electric Code ANSI/NFPA 70-latest edition
• Canada: Canadian Electric Code CSA C22.1 – latest edition.
VENTING:
Refer to the following standards for proper location, sizing, and
installation of vents as well as information on clearance requirements
when passing through walls for venting purposes:
• United States : National Fuel Gas Code ANSI Z223.1 (NFPA-54)-
latest edition.
• Canada: CAN/CGA B149.1 and B149.2 Installation Codes in
Canada – latest edition.
SRH pg. 6
!! WARNING !! !! WARNING !! !! WARNING !!
CLEARANCE TO COMBUSTIBLES
The minimum clearances
as shown in the diagram
below MUST be
maintained from vehicles
parked below this heater.
The radiant heat can
damage painted surfaces.
Minimum clearance specified below MUST BE maintained to combustible materials and any
1
2
3
4
5
CLEARANCES APPLICABLE
other material that may be damaged by temperatures of 90°F above (50°C above) ambient
room temperature. The specified distance MUST BE maintained from the top surface of
carpeting, tile, etc.
Minimum clearance to combustibles are also specified on each heater’s serial plate located
next to the blower on the burner.
According to section 9.18.2(3) of the National Fuel Gas Code, “In locations used for storage
of combustible materials, signs shall be posted to specify the maximum permissible stacking
height to maintain required clearances from the heater to combustibles.”
CHILDREN AND ADULTS SHOULD BE ALERTED TO THE HAZARDS OF HIGH
SURFACE TEMPERATURES ON THE HEATER, AND SHOULD STAY AWAY TO AVOID
BURNS OR CLOTHING IGNITION.
CLOTHING OR OTHER FLAMMABLE MATERIALS SHOULD NEVER BE HUNG FROM
THE HEATER, OR PLACED ON OR NEAR THE HEATER. CERTAIN MATERIALS OR
ITEMS, WHEN STORED UNDER THE HEATER, WILL BE SUBJECTED TO RADIANT
HEAT AND COULD BE SERIOUSLY DAMAGED.
FOR ALL HEATERS
Inches (Centimeters)
TOP OF REFLECTOR
12 (31)
END OF BURNER
12 (31)
Failure to comply with
these clearances could
result in fire, property
damage, personal injury,
and/or death. Supervise
young children when in
The area in all directions
surrounding the heater
MUST be kept clear from
combustible materials,
and other flammable
vapors and liquids.
the same room as the
heater.
Top, Front, and Rear clearances are measured from reflector.
TOP
REARFRONT
BELOW
Below clearance is measured from bottom of tube.
REFLECTOR WIDTH =
15.75" (40 cm)
FRONT
TOP
REAR
BELOW
FRONT
BELOW
TOP
REAR
Clearance to combustibles measurements are given in inches and (centimeters).
END OF U-BEND
50 (127)
SERIES MBTUH (kW) FRONT REAR BELOW
40 (11.7)
45 (13.2)
SRH
50 (14.6)
55 (16.1)
60 (17.6)
MINIMUM MOUNTING HEIGHT: Bottom of tube to floor: 8 ft. (2.4 m) U.S.A., 7 ft. (2.1 m) Canada
DIAGRAMS NOT DRAWN TO SCALE
0° to 30° Reflector Angle
24 (61) 24 (61) 40 (102)
24 (61) 24 (61) 50 (127)
SRH pg. 7
MOUNTING CONSIDERATIONS
• Clearance to combustibles must be observed at all times.
• In all cases, minimum installation height: 8 ft. (240 cm) U.S.A., 7 ft. (214
cm) Canada, from floor ground level.
• The heater must be controlled by a thermostat, timer, or other
automatically operated device. On/off switches or direct wiring to a
circuit breaker are not allowed.
• Verify the buildings overhead structure has sufficient strength and
proper suspension means to support the weight of the heater
• Observe and verify all chains are plumb and vertical. A chain that is not
plumb and vertical may cause damage to the heater.
• To maximize the heater’s effectiveness to cover the space to be heated,
it is recommended the heater be hung as high as possible and along an
uncluttered wall to give the heater’s reflector the widest possible “view”.
• Leave enough space around the burner box to permit future servicing.
• Choose a location allowing easy installation of the vent piping system.
• Each suspension point must be capable of supporting a minimum of 150
lbs. (65 kg).
• Allow for heater’s movement during expansion and contraction through
the operation cycle.
• Heaters shall not be installed in living/sleeping areas.
• U-tube heaters must have a reflector installed over the U-bend tube.
• If a heater is to be installed at a high elevation, in excess of 2000 feet
(610 m) above sea level, the installer is advised to verify it has been
properly factory modified for this application in accordance with the
National Fuel Gas Code.
CAUTION: HIGH ELEVATION
SRH pg. 8
NOTE:
WHEN GAS PRESSURE EXCEEDS
14" (35cm) W.C., A FIRST STAGE
REGULATOR MUST BE INSTALLED.
GAS CONNECTION DIAGRAM
ALL HANGING CHAINS MUST BE PLUMB
AND VERTICAL IN ALL DIRECTIONS WHEN
VENT CAP
MUST BE 6 IN. (15cm)
HIGHER THAN SNOW
DEPTH
ROOF FLASHING
(NOT SUPPLIED)
OVERVIEW DRAWINGS (1 OF 2)
5"
(13cm)
1/2" (1.27cm) O.D. FLEXIBLE GAS CONNECTOR
15"
(38cm)
6.5"
(17cm)
FIRST TUBE SUSPENSION POINT SHOULD BE
(18) IN. (46cm) FROM THE BURNER BOX
INITIALLY INSTALLED
BURNER
12"(30cm) MIN.
24" (61cm) LONG STAINLESS STEEL
CLEARANCE
LOCAL CODES MAY REQUIRE AN ADDITIONAL
SHUT-OFF COCK BE INSTALLED IN THE
GAS LINE AHEAD OF THE DRIP LEG
DRIP LEG
GAS COCK
(SUPPLIED BY OTHERS)
HANGER BRACKETS MUST BE
SPACED AT LEAST 4 FT. (1.2m) APART
WITH (2) BRACKETS FOR EVERY
SECTION OF RADIANT TUBING
4 FT. (1.2m)
MIN.
8FT.
(2.4m)
29 IN.
(74cm)
MAX.
TYP.
VENT CAP MUST BE
6" (15cm) HIGHER
THAN SNOW DEPTH
"B" VENT PIPE ADAPTOR
HEAT EXCHANGER 4 IN.
(10.2cm) O.D. X 5 OR 10 FT.
(1.5m OR 3.0m) LONG
REFLECTOR
INDEPENDENTLY ADJUSTABLE
COMBUSTION CHAMBER
4 IN. (10.2cm) O.D. X 10 FT. (3m) LONG
ADDITIONAL COMBUSTION AIR SUPPLY
SINGLE WALL 26 GA. (.044cm) MINIMUM
GALVANIZED SHEET METAL PIPE OR
SCHEDULE 40 PVC (SEAM TO BE AT TOP)
(NOT SUPPLIED)
INLET AIR SLEEVE
(SEAM TO BE ON TOP)
4 IN. (10.2cm) I.D. FLEX DUCT
18 IN. (46cm) LONG WITH
(2) HOSE CLAMPS
SUPPLY PIPING MUST NOT EXCEED AN EQUIVALENT
OF 35 LINEAR FT. (10.7m) FOR 40-60 MBTUH (11.7-17.6kW).
NO MORE THAN TWO 90° ELBOWS MAY BE USED.
A 90° ELBOW IS EQUIVALENT TO 10 LINEAR FT. (3m).
INLET AIR BOX
(NOT SUPPLIED)
OPTIONAL INLET
AIR SLEEVE (SEAM
TO BE ON TOP)
OVERVIEW DRAWINGS (2 OF 2)
SRH pg. 9
MAINTAIN 18 IN. (46cm) MINIMUM
CLEARANCE TO COMBUSTIBLES
FOR ENTIRE LENGTH OF PIPING
ADDITIONAL EXHAUST VENT PIPING 4" (10.2cm) I.D.
SINGLE WALL 26 GA. (.044cm) MINIMUM GALVANIZED
SHEET METAL (OR OTHER FACTORY-APPROVED
MATERIALS) (SEAM TO BE ON TOP) (NOT SUPPLIED)
MUST NOT EXCEED AN EQUIVALENT OF 35 LINEAR FT.
(10.7m) FOR 40-60 MBTUH (11.7-17.6kW). NO MORE
THAN 2 ELBOWS MAY BE USED. A 90° ELBOW IS
EQUIVALENT TO 10 LINEAR FT. (3m). A 45° ELBOW IS
EQUIVALENT TO 5 LINEAR FT. (1.5m).
2 FT. (61cm) MIN.
4"(10.2cm)
VENT CAP
ASSEMBLY
WALL
VENTING
KIT
WALL BRACE
USE APPROPRIATE FASTENER (NOT SUPPLIED)
FOR ATTACHING TO BUILDING MATERIAL
FOR ALL INDOOR VENT JOINTS: USE RTV SEALANT TO PREVENT HOT FLUE GAS LEAKAGE INTO THE
BUILDING (USE A SHEET METAL PIPE AND CRIMPER FOR JOINING IDENTICAL SIZE SHEET METAL PIPES),
USE THREE (3) #6 SHEET METAL SCREWS (SMS) PER VENT PIPE JOINT. THE VENT PIPE SEAM SHOULD
BE ON TOP WITH ONE SMS ON TOP AND ONE SMS 120 DEGREES FROM THE TOP ON EACH SIDE.
(3) 90 DEGREE BRACES EQUALLY SPACED
FLOW OF HOT GASES
2 FT. (61cm) MINIMUM
CLEARANCE ABOVE OR
BEYOND THE HIGHEST
STRUCTURE OF SURFACE
WITHIN 10 FT. (3m)
OF THE VENT
TUBE WELD SEAM
ON TOP
#12 TEK SCREW
TUBE WELD SEAM
ON TOP
3.0" (7.6cm) MIN.
4.0" (10.2cm) MAX.
HEAT EXCHANGER MOUNTING ARRANGEMENT
#12 TEK SCREW
4 PLACES
BURNER
WELD SEAM TO BE AT TOP
COMBUSTION CHAMBER
BURNER COUPLER
BURNER COUPLER MOUNTING ARRANGEMENT
FOR ALL JOINTS RTV
SILICONE ADHESIVE
SEALANT SHOULD BE
USED TO PREVENT
LEAKAGE OF HOT
FLUE GASSES.
(10 x 10 x 13cm) (OPTIONAL ACCESSORY)
4" x 4" x 5" Y-COUPLER
OPTIONAL COMMON VENTING THROUGH ROOF OR WALL
BOTH HEATERS MUST BE CONTROLLED
BY A SINGLE THERMOSTAT
FOR COMBUSTIBLE WALLS ONLY
USE A 2" (5.1cm) CLEARANCE
NON-COMBUSTIBLE VENTILATING
METAL THIMBLE (NOT SUPPLIED) .
FOR NON-COMBUSTIBLE WALLS
ONLY 4.25" (10.8cm) DIA. HOLE
FOR 4" (10.2cm) O.D. PIPE ADD
NON-COMBUSTIBLE PROTECTION
AROUND THE HOLE IF NECESSARY.
NOTE
This drawing is for general reference only! It shows only general design
guidelines and it does not provide construction details.
CAUTION
• A U-Tube heater may have a 180 degree U-bend interposed AFTER the
first ten (10) feet (3.0 m).
• Electrical wiring diagrams can be found in the ELECTRICAL SUPPLY
AND THERMOSTATIC CONTROL section.
• The heater must be controlled by a thermostat, timer or other
automatically operated device.
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