Sure Flame SL11B Installation and user guide

SL11B
&
S1500
CONSTRUCTION HEATERS
PRODUCTS
October 14, 2003
SERVICE AND MAINTENANCE MANUAL No. 934-6644
PLEASE RETAIN FOR FUTURE REFERENCE
A DIVISION OF HAUL-ALL EQUIPMENT LTD.
LETHBRIDGE, ALBERTA

SL11B & S1500 Manual 934-6644 - Page 2

SL11B & S1500 Manual 934-6644 - Page 3
SL11B & S1500
CONSTRUCTION HEATERS
Failure to comply with the precautions and instructions
provided with this heater, can result in death, serious
bodily injury and property loss or damage from hazards
of fire, explosion, burn, asphyxiation, carbon monoxide
poisoning, and/or electrical shock.
Only persons who can understand and follow the
instructions should use or service this heater.
If you need assistance or heater information such as
an instruction manual, labels, etc. Contact the
manufacturer.
Fire, burn, inhalation, and explosion hazard. Keep solid
combustibles, such as building materials, paper or
cardboard, a safe distance away from the heater as
recommended by the instructions. Never use the heater
in spaces which do or may contain volatile or airborne
combustibles, or products such as gasoline, solvents,
paint thinner, dust particles or unknown chemicals.
Not for home or recreational vehicle use
WARNING
WARNING
GENERAL HAZARD WARNING

SL11B & S1500 Manual 934-6644 - Page 4
READ THIS
WARNING
FIRST!
Theheaterisdesignedandapprovedforuseasaconstructionheater
under CAN 2.14-2000. The primary purpose of construction heaters
is to provide temporary heating of buildings under construction,
alteration, or repair and to provide temporary emergency heat.
Properly used the heater provides safe economical heating. Prod-
ucts of combustion are vented into the area being heated.
The heater is not designed as an Unvented Gas Fired Room Heater
under ANSI-Z21.11.2 and should not be used in the home.
ANSI A119.2(NFPA 501C)-1987 Recreational Vehicle Standard
prohibits the installation or storage of LP-Gas containers even
temporarilyinsideanyrecreationalvehicle.Thestandardalsoprohib-
its the use of Unvented Heaters in such vehicles.
Gas inspection authorities in Canada require that the
installation and maintenance of heaters and accessories be
accomplished by qualified gas fitters.
Installation must comply with CAN/CGA-B149.2 Installation
Code for Propane Burning Equipment.
Installation must comply with CAN/CGA-B149.1 Installation
Code for Natural Gas Burning Equipment.
We cannot anticipate every use which may be made for our heaters.
CHECK WITH YOUR LOCAL FIRE SAFETY AUTHORITY IF YOU
HAVE QUESTIONS ABOUT LOCAL REGULATIONS.
Other standards govern the use of fuel gases and heat producing
productsinspecificapplications.Yourlocalauthoritycanadviseyou
about these.
FOR YOUR SAFETY
DO NOT USE THIS HEATER IN A SPACE WHERE
GASOLINE OR OTHER LIQUIDS HAVING
FLAMMABLE VAPOURS ARE STORED OR USED.

SL11B & S1500 Manual 934-6644 - Page 5
SL11B & S1500
CONSTRUCTION HEATERS
CONTENTS
Specifications ..........................................................................................6
Installation...............................................................................................7
Installation Using A Propane Supply Tank ..............................................8
Installation For Natural Gas Applications ................................................8
Operating Instructions.............................................................................9
Sequence Of Operation ........................................................................10
Common Installation And Operational Problems ..................................10
Safety Features..................................................................................... 11
Design Related Additional Safety Features ..........................................12
On-site Safety Problems .......................................................................12
Preventive Maintenance .......................................................................13
SL11B/S1500 Heater Parts ...................................................................16
SL11B Connection Wiring Diagram ......................................................18
SL11B Ladder Wiring Diagram .............................................................19
S1500 Connection Wiring Diagram ......................................................20
S1500 Ladder Wiring Diagram .............................................................21
Lpg - Propane Fuel Vaporization Rate .................................................22
Maximum Btu Content (Propane) .........................................................22
Pressure & Flow Equivalents ................................................................22

SL11B & S1500 Manual 934-6644 - Page 6
SPECIFICATIONS
SL11B & S1500 Construction Heaters
Certified to CSA 2.14-2000 Gas Fired Unvented Construction Heater
Gases: Natural or Propane
Capacity: SL11B 1,000,000 Btu/h
S1500 1,500,000 Btu/h Maximum
850,000 Btu/h Minimum
Orifice Size: 43 DMS x 46)
Blower: 7,000 cfm
Electrical Rating: 115 volts, 60 Hz, 15 amps, single phase
Gas Supply: SL11B
Inlet Pressure Manifold Pressure
Max.W.C. Min.W.C. Max.W.C.
Propane 14 inch 8 inch 1.8 inch
Natural 14 inch 8 inch 4.8 inch
(Minimum inlet pressure is for purpose of input adjustment)
Gas Supply: S1500
Inlet Pressure Manifold Pressure
Max.W.C. Min.W.C. Max.W.C. Min.W.C
Propane 14 inch 8 inch 2.7 inch 0.75 inch
Natural 14 inch 8 inch 7.2 inch 2.0 inch

SL11B & S1500 Manual 934-6644 - Page 7
INSTALLATION
The Sure Flame Models SL11B & S1500 are direct fired gas heaters
intended to be used primarily for the temporary heating of buildings under
construction, alteration, or repair. Since all the products of combustion are
released into the area being heated, it is imperative that adequate ventila-
tion be provided. The flow of supply air and combustion gases must not be
obstructed in any way. Do not use the heater with ductwork as this will
restrict the flow of supply air.
1 Install the heater in a horizontal position at least 6 feet from any LP-
gas container, and allow the following clearance from any combusti-
ble materials:
Front Outlet: 20 feet (6 M) Sides: 2 feet (0.6 M
Intake: 2 feet (0.6 M) Top: 4 feet (1.2 M)
Front Outlet must not be directed at any LP-gas container within 20
feet (6M).
Also make sure that no flammable vapours are present in the space
where the heater is being used.
2 When connecting the heater to a natural gas or propane supply line
ensure that the pressure at the heater inlet is within the specified range.
Excessive pressure (over 1/2" psig) will damage the controls and void
the warranty.
3 Visually inspect the hose assembly and ensure that it is protected from
traffic, building materials, and contact with hot surfaces. If it is evident
that there is excessive abrasion or wear, or the hose is cut, it must be
replaced.
4 After installation, check the hose assembly for gas leaks by applying a
water and soap solution to each connection.
5 Connecttheheatertoanadequate115voltelectricalsupplyasspecified
on the rating plate. For protection against shock hazard the supply cord
must be plugged directly into a properly grounded three-prong recep-
tacle.
6 In all applications install the heater in such manner that it is not
directly exposed to water spray, rain and/or dripping water.

SL11B & S1500 Manual 934-6644 - Page 8
INSTALLATION USING A
PROPANE SUPPLY TANK
1 When installing the heater for use with propane gas, set the gas
selector valve to “Propane” and lock in position.
2 The supply container must be equipped with a UL listed Gas Pressure
Regulator. This is essential to reduce the gas pressure to a safe
transmittable pressure. This pressure must further be reduced so the
gas pressure does not exceed the maximum input pressure of the
heater. This can be accomplished by placing a suitably sized second
stage gas regulator on the valve train at the heater. This regulator
should also be a UL listed LP Gas Pressure Regulator.
3 Arrange the propane supply system to provide for vapour withdrawal
from the operating container. Supplying liquid propane to the heater is
dangerous and will damage the components.
4 Ensure that for the surrounding temperature the size and capacity of
the propane supply container is adequate to provide the rated Btu/h
input to the heater.
5 Turn off the propane supply valve at the container when the heater is
not in use.
6 The installation must conform with local codes, or in the absence of
local codes, with CAN/CGA-B149.2 Propane Installation Code.
7 When the heater is to be stored indoors the propane container must be
disconnected from the heater and the container moved away and
stored in accordance with the above National Standard.
INSTALLATION FOR
NATURAL GAS APPLICATIONS
1 Wheninstalling the heater for use with natural gas,set the gas selector
valve to the “Natural” position.
2 A regulator must be installed on the heater to ensure that the pressure
to the heater does not exceed 1/2 psi inlet pressure.
3 Theinstallationofthis heatertoanaturalgassupply mustconformwith
all applicable local codes or, in the absence of local codes, with the
CAN/CGA-B149.1 Natural Gas Installation Code.

SL11B & S1500 Manual 934-6644 - Page 9
OPERATING INSTRUCTIONS
1 Set GAS SELECTOR VALVE to gas being used. The conversion shall
be done by the owner or lessor of the equipment.
NOTE: When using Propane Gas the Selector Valve must be locked
in position.
2 Ensure the FIRING VALVE (valve nearest the burner) is in the “ON”
position.
3 Connect power - 115 volt supply.
4 Open gas supply.
5 Push START Button and hold. White light will come on immediately.
After 5 second purge, red light will come on. When red light comes on,
release START button. If red light fails to remain on repeat sequence.
6 Set thermostat to desired temperature. ( S1500 only )
7 To stop, turn gas off, then push STOP button.
The appliance area should be kept clear and free from combustible
materials, gasoline, and other flammable vapours and liquids.
Ensure that the flow of supply air and combustion gases is not obstructed.
The installation and operation of the heater shall comply with the code
requirements specified by the authorities having jurisdiction.
General criteria for the use of construction heaters may be found in the
applicable sections of the National Standard of Canada Propane Installa-
tion Code CAN/CGA-B149.2.
THE INSTALLATION AND MAINTENANCE OF THE
HEATER MUST BE ACCOMPLISHED
BY A QUALIFIED SERVICE PERSON.

SL11B & S1500 Manual 934-6644 - Page 10
SEQUENCE OF OPERATION
1 Push start button and hold.
2 Motor relay, and control relay #1 close simultaneously.
3 Fan starts.
4 Fan reaches full speed, air switch closes, and white light comes on.
5 Control relay closes.
6 Gas valves energized, and spark is initiated.
7 Flame rod senses a proven flame, and red light comes on.
8 Release start button.
The following instruction (#9) is for Model S1500 only.
9 Setthermostattodesiredtemperature,heaterwillcyclefromlowtohigh
flame thermostatically.
COMMON INSTALLATION AND
OPERATIONAL PROBLEMS
1 LOW VOLTAGE
Thisisoneofthemost common problems and isusuallytheresultofthe
supply cord having too small a wire gauge for its length. Low voltage
results in the motor overheating, burnt relay contacts, or a relay that will
not maintain contact.
2 SUPPLY LINE TOO SMALL
3 INSUFFICIENT VAPORIZATION AT SUPPLY
Normally caused by too small size of supply tank.
4 IMPROPER GAS SUPPLY PRESSURE
Usually a result of supply pressure being too high because of improper
or lack of regulation.
5 DIRTY GAS SUPPLY
Dirty gas can cause strainers to plug or form a build-up in the burner
orifice.

SL11B & S1500 Manual 934-6644 - Page 11
6 LACK OF PREVENTATIVE MAINTENANCE
Heaters must be cleaned as required, especially when used in a dirty
environment.
7 IMPROPER SUPPLY OF FRESH AIR
Recommended: Intake air for the heater be taken from outside the
enclosed area. This provides a slight pressurization and prevents any
problems associated with recirculation.
SAFETY FEATURES
Servicing of Sure Flame Construction Heaters normally involves one of
several built-in safety features. The Models SL11B & S1500 incorporate
devices to detect the following:
1 LOSS OF FLAME Gas supply is shut off if flame is lost to
prevent raw gas from leaving the heater.
2 OVERHEATING (a) Thermal overload protection in the
motor.
(b) High temperature limit switch in the
combustion chamber.
3 LOSS OF POWER Total shutdown with manual reset re-
quired. Any one of the safety devices will
create a loss of power situation.
4 BLOCKED AIR SUPPLY A switch detects the differential pressure
in the combustion chamber and shuts
down when insufficient.

SL11B & S1500 Manual 934-6644 - Page 12
DESIGN RELATED ADDITIONAL
SAFETY FEATURES
1 LOCKING POSITION FOR LPG ON GAS SELECTOR LEVER
Units used with LPG while the gas selector valve is positioned for
Natural Gas will throw significantly more heat than the rated Btu/h. This
is definitely a safety hazard.
2 LOW SKIN TEMPERATURE
Sure Flame Heaters are designed to have a low skin temperature. This
provides added safety in the workplace.
3 DURABLE CONSTRUCTION
TheModelsSL11B&S1500useastainlesssteelburnerforlonglifeand
consistent performance.
In order to maintain the highly efficient combustion of the Sure Flame
Heater, the combustion chamber must remain as manufactured. Any
changeordistortioncouldalterthe fuel/air mixtureandcreateunwanted
gases.
ON-SITE SAFETY PROBLEMS
1 SHORTING OUT OF DEFECTIVE COMPONENTS
This is a common problem which saves short term expense at the risk
of a large future cost. Any heaters found in this condition should be
removed immediately.
2 IMPROPER ENCLOSURES
When heaters are installed partially to the outside for fresh air intake,
strictadherencemustbemadetotheminimumclearancetocombustibles
givenontheinstructionplate.Woodframingaroundaheaterisarequest
for trouble.
3 SUPPLYING LIQUID PROPANE TO HEATER
This problem has occurred from time to time. To minimize the damage,
and possible personal injury, shut off the gas supply and let the heater
run until all of the liquid in the lines has been vaporized.

SL11B & S1500 Manual 934-6644 - Page 13
PREVENTIVE MAINTENANCE
Sure Flame Construction Heaters are built to withstand the rigours of
operating on construction sites, for mining applications, and a multitude of
other locations where heaters are used. To maintain the reliable perform-
ance required it is necessary to do a certain amount of regular mainte-
nance.
A VISUAL CHECKS
The following items should be checked for excessive wear or damage:
1) Wheels
2) Cords and Connectors
3) Wiring and Conduit
4) Heater Shell (including heat shield) and Control Box
5) Valve Train
It is recommended that units purchased as spares be
rotated periodically, so that each unit will be placed in
operation at least once every 90 days.
B BURNER
Flame Rod and Insulator - Cleanwithsoapand waterorsolventona
routine basis. Any build up on burner
should also be removed at this time.
Ground Wire - Ensure that the ground wire is secured to
the burner. This is necessary for the
flame detection system to operate.
Spark Plug - Clean with solvent and check spark gap.
C CONTROL BOX
The inside of the control box should be cleaned using a dry cloth or by
blowing compressed air. Do not use any liquid or aerosol spray
cleaners. Also check that all electrical connections are snug and tight.
D MOTOR
The electric motor on the SL11B & S1500 Heaters is fitted with sealed
bearings and no oiling is required. Keep the motor clean by blowing or
wiping off dust or dirt in order to prevent it from over heating.
E FAN
Check for dust or dirt build up on fan blades. Check the tightness of the
set screw and run the heater to check for fan vibration.

SL11B & S1500 Manual 934-6644 - Page 14
SL11B/S1500 TROUBLESHOOTING
For units incorporating Fenwall series 05-14 Ignition modules
An AC voltmeter is required to make these checks. Voltage is 115VAC on
the control circuit and the motor. Use extreme caution when checking
voltage.
1 Push start button and hold for 2 to 3 seconds.
2 Motor relay and control relay #1 close simultaneously.
1) If motor relay does not close check:
a) If there is power between the coil terminals of the motor starting
relay then the relay is faulty.
b) If there is no power between these two terminals then proceed to
check the delay timer.
c) If there is power between terminals 1 &2, and 2 & 3, but no power
between 2 & 6, then the timer is defective.
d) Ifthereisnopowerbetweenterminals2&3ofthetimerthencheck
the start switch.
e) If there is power at the red wire on the start switch and no power
at the middle terminal of the start switch, then the start switch is
faulty.
2) If control relay # 1 does not close then check:
a) IfthereispowerpresentatterminalsA&Bofthecontrolrelaythen
the control relay is defective.
b) If there is no power between these terminals then check the stop
switch.
c) If there is power on the common (middle) terminal of the stop
switch but no power on the NC terminal then the stop switch is
defective.
3 Fan Starts, if not check:
a) If there is power between the black and white wires inside the motor
junction box ( located on side of motor ) then the motor may need
manual resetting. Pushing the red button on the side of the junction
box. If this does not correct the problem then the motor is faulty.
b) Ifthereisnopoweratthesetwowireendsthencheckthemotorrelay
contacts, they may need cleaning or replacing, if burnt.
4 Fanreachesfullspeed,airswitchcloses,andwhitelightcomeson,ifnot
check:
a) If there is power on only one of the airswitch terminals while motor
is running, then the airswitch is staying open. First check
if either the upstream or down stream airtubes are plugged.
b) If both are free then check alignment ( tubes must be positioned
parallel to the direction of airflow ).

SL11B & S1500 Manual 934-6644 - Page 15
c) Ifaboveproceduresdonotcorrectproblem,thentheadjustingscrew
locatedonthesideoftheairswitchcanberotatedcounterclockwise,
just enough so that the fan stays running.
5 Control relay #2 closes, if not check:
a) If there is power between terminals A & B of relay #2, if power is
present then relay is faulty.
b) If there is power between terminals L1 & L2 of the Fenwall module,
but no power 2 seconds after startup between terminals V1 & V2 of
the Fenwall, then the Fenwall module is defective.
6 Gas valves are energized, and spark is initiated:
1) If gas valves do not open then check each gas valve individually:
a) Ifthereispowerbetweenthewiresleadingtothegasvalve,then
the gas valve is faulty.
b) If there is no power at terminal V1 of the Fenwall module 2
seconds after startup, but there is power at terminal L1 of the
Fenwall then the Fenwall module is faulty.
c) If there is no power at terminal L1 of the Fenwall module then
checkthefollowingcomponentsusingthepreviouslymentioned
tests for the limit switch, the airswitch and control relay #2.
2) If there is no spark then check:
a) Check the spark plug, gap should be at least 1/8".
b) Check if ignition wire is burnt or if it grounding out to the heater.
c) If there is power at terminal L1, and no power at terminal V1 of
the Fenwall then the Fenwall module is faulty.
7 Flame rod senses, and maintains flame, if not check:
a) If flame rod wire is connected to flame rod and not grounding out to
the heater.
b) ifflamerodwireisinsertedintotothecorrectlocationontheFenwall
module.
c) Theflamerodmustalwaysbescrewedintotheburnersecurely.The
probe part should not be touching the burner in any way thus
grounding out.
d) If the flame is too short and flame rod is not a bright orange colour,
then check if there is adequate manifold gas pressure.
e) If above checks are all good then the Fenwall module is defective.
The following instruction (#8) pertains to model S1500 only.
8 Setthermostattodesiredtemperature,heaterwillcyclefromlowtohigh
flame, if not:
a) If there is no power at the thermostat then the start switch is faulty.
b) If there is no power at the high flame side of the 2 stage regulator
then the thermostat is faulty.
c) If there is power at the high flame side of the 2 stage regulator then
the valve is faulty.

SL11B & S1500 Manual 934-6644 - Page 16
SL11B/S1500 HEATER PARTS
1
2
3
4
5
6
7
89
11
12
13
14
15
16
18 19 20 21
22
24
23
23A
26
31
15 SL11B Valve
Train
25
S1500
Valve Train
17
10
29 27
30
28
EFFECTIVE: AUG 7, 1992 REVISED: JUNE 16, 1997 Feb 9, 1998
32

SL11B & S1500 Manual 934-6644 - Page 17
SL11B/S1500 HEATER PARTS
Sept 13, 2002
Ref. Part No Description
1 S1505-55 Heater Body includes: 2, 4, 5
S1505-56 Heater Body includes: 2, 4
2 SL11B-90 Heat Shield
3 SL11B-53 Screen
4 SL11B-13 Nose Cone
5 BV85-50 1,500,000 BTU Burner
6 2143 Spark Plug
7 SL11B-86 Flame Rod
8 SL11B-35 Control Box Cover
9 2423 24" Fan Blade
10 5953 1 HP Electric Motor
11 6119 8" Semi Pneumatic Wheel
12 2528 Regulator(optional)
13 SL11B-82 1.5" Strainer (SL11B only)
S1500-83 1.25" Strainer (S1500 only)
14 4490 1.25" 2-Stage Regulating Valve (S1500 only)
15 2537 1.5" Solenoid Valve
16 S1505-81 Changeover Valve 17/32 Orifice
17 2539 1.5" Manual Shut-Off Valve
18 SL11B-58 Control Box
19 8864 Fenwal Ignition Control
20 5768 Terminal Blocks
21 2436 Motor Starting Relay
22 5989 Voltmeter
23 3337/9 ON Switch (Green)
23a 3337/8 OFF Switch (Red)
24 2453 Thermostat (S1500 only)
25 2505 White Light
26 2506 Red Light
27 5988 10-Second Delay On Break Timer
28 2446 HI Limit Thermoswitch
29 6440 Relay Clip
30 4512 Control Relay with clip
31 5355 Air Switch (0.5" W.C.)
32 2526 1-1/2" Appliance Regulator (SL11B only)

SL11B & S1500 Manual 934-6644 - Page 18
SL11B CONNECTION WIRING
DIAGRAM
V
TIMER
1 6 3 2
FENWALL
#05-142401-001
S1 E2 L2 V2 L1 NC V1
SP
7
A
M
B
57
AB
5
AIR SWITCH
HI LIMIT
SWITCH
POWER RELAY
FUSE
CB CB
Circuit braker
1.0A

SL11B & S1500 Manual 934-6644 - Page 19
V
STOP BUTTON
POWER LIGHT
FENWALL
#35-70XXX-XXX
S1 L2V2L1 V1
SP
M
VALVE TRAIN PILOT LIGHT
FLAME ROD
NCG
7
AB
5
RELAY 1
TIMER
1 6
3 2
A B
75
RELAY 2
POWER RELAY
AIR SWITCH
HI LIMIT
SWITCH
ERROR LIGHT
FC-
FC+
SOLENOID VALVE SOLENOID VALVE
FUSE
L N
SL11B LADDER WIRING DIAGRAM

SL11B & S1500 Manual 934-6644 - Page 20
S1500 CONNECTION WIRING
DIAGRAM
V
TIMER
1 6 3 2
FENWALL
#05-142401-001
S1 E2 L2 V2 L1 NC V1
SP
7
A
M
B
57
AB
5
AIR SWITCH
HI LIMIT
SWITCH
POWER RELAY
FUSE
to
THERMOSTAT
3 1
CB CB
Circuit braker
1.0A