Sure Flame SE405 Installation and user guide

PRODUCTS
July 29, 2011 Rev: 1.2 No.974-9885
SERVICE AND MAINTENANCE MANUAL
PLEASE RETAIN FOR FUTURE REFERENCE
A Division of Haul-All Equipment Ltd.
4115 - 18 Avenue North
Lethbridge, Alberta T1H 5G1
www.sureflame.ca
CONSTRUCTION HEATERS
SE405

Page 2 P/N:974-9885 SE405 Manual Rev. 1.2
SE405 CONSTRUCTION HEATER
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

SE405 Manual Rev. 1.2 P/N:974-9885 Page 3SE405 Manual Rev. 1.2 P/N:974-9885 Page 3
READ THIS
WARNING
FIRST !
The heater is designed and approved for use as a construction heater
under ANSI Z83.7a-2007. The primary purpose of construction heat-
ers is to provide temporary heating of buildings under construction,
alteration, or repair and to provide temporary emergency heat. Prop-
erly used, the heater provides safe economical heating. Products 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
temporarily inside any recreational vehicle. The standard also prohib-
its the use of Unvented Heaters in such vehicles.
Installation must comply with local codes, or in the absence of
local codes, with the National Fuel Gas Code ANSI Z223.1/NFPA
54 and the Standard for the Storage and Handling of Liquified
Petroleum Gases ANSI/NFPA 58.
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
products in specific applications. Your local authority can advise you
about these.

Page 4 P/N:974-9885 SE405 Manual Rev. 1.2
FOR YOUR SAFETY
DO NOT USE THIS HEATER IN A SPACE WHERE
GASOLINE OR OTHER LIQUIDS HAVING
FLAMMABLE VAPOURS ARE STORED OR USED.
SE405 CONSTRUCTION HEATER
CONTENTS
Specifications ........................................................................................... 5
Installation ............................................................................................... 6
Installation Using A Propane Supply Tank ................................................ 7
Installation For Natural Gas Applications ................................................. 7
Operating Instructions .............................................................................. 8
Preventative Maintenance ......................................................................... 9
Troubleshooting ...................................................................................... 10
SE405 Connection Wiring Diagram ........................................................ 12
SE405 Ladder Wiring Diagram ............................................................... 13
SE405 Heater Parts ............................................................................... 14
LPG - Propane Fuel Vaporization Rate ................................................... 16

SE405 Manual Rev. 1.2 P/N:974-9885 Page 5SE405 Manual Rev. 1.2 P/N:974-9885 Page 5
SPECIFICATIONS
Model No. SE405 Construction Heaters
Gases: Natural or Propane
Capacity: 400,000 Btu/h (120 kW) maximum
Orifice Size: 11/64” (x6)
Inlet Air Flow: 1150 cfm (545 l/s) at 20°C (68°F)
Outlet Air Flow: 1800 cfm (850 l/s) at 186°C (367°F)
Electrical Rating: 120 volts, 60 Hz., 7.5 amps, single phase
Minimum Temperature: -30°C (-22°F)
Maximum Duct Length: 25’ (7.6 m)
Duct Diameter: 18”
Max. Duct Static Pressure: .49”
Gas Supply:
Inlet Pressure Manifold Pressure
Max. W.C. Min.W.C. Max.W.C.
14" (3500 Pa) 8.0" (2000 Pa) 5.0" (1250 Pa)
(Minimum inlet pressure is for purpose of input adjustment)

Page 6 P/N:974-9885 SE405 Manual Rev. 1.2
INSTALLATION
The Sure Flame Model SE405 Construction Heater is a direct fired gas heater
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 ventilation
is provided.
1 Install the heater in a horizontal position at least 10 feet (3m) from any
LP-gas container. Allow the following clearances from any combustible
materials:
Front Outlet: 12 feet (3.7 m) Sides: 2 feet (0.6 m)
Intake: 2 feet (0.6 m) Top: 5 feet (1.5 m)
Front Outlet must not be directed at any LP-gas container within 20 feet
(6 m).
The heater is designed for use with up to 25 feet of 18” ductwork.
Ductwork must be able to handle temperatures of up to 300°F. Only
duckwork supplied by the manufacture shall be use with this heater.
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" psi) 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 Connect the heater to an adequate 120 volt electrical supply as specified
on the rating plate. For protection against shock hazard the supply cord
must be plugged directly into a properly grounded three-prong receptacle.
Note: Low Voltage (long extension cord or too many items on circuit) will
shorten motor life.

SE405 Manual Rev. 1.2 P/N:974-9885 Page 7SE405 Manual Rev. 1.2 P/N:974-9885 Page 7
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 Arrange the propane supply system to provide for vapour withdrawal from
the operating container. Supplying liquid propane to the heater is danger-
ous and will damage the components. Another regulator must be
installed on the heater to reduce the pressure from this regulator to a
maximum inlet pressure of 1/2 psi.
3 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.
4 Turn off the propane supply valve at the container when the heater is not
in use.
5 The installation must conform with local codes, or in the absence of local
codes, with the Standard for the Storage and Handling of Liquedied
Petroleum Gases, ANSI/NFPA 58.
6 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 standards.
INSTALLATION FOR
NATURAL GAS APPLICATIONS
1 When installing 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 The installation of this heater to a natural gas supply must conform with
all applicable local codes, or in the absence of local codes, with the
National Fuel Gas Code ANSI Z223.1/NFPA 54.

Page 8 P/N:974-9885 SE405 Manual Rev. 1.2
HEATER OPERATING INSTRUCTIONS
1) Set GAS SELECTOR VALVE to gas being used. The conversion shall
only 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 valve is in the "ON" position.
3) Connect Power - 120 volt supply. Open gas supply.
4) Set switch to "HEAT" mode.
5) Push "START" button.
6) If equipped with a thermostat, set thermostat to desired temperature.
To stop, push the "STOP" button and turn gas off. Fan will continue
operating for 60 seconds.
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.
THE INSTALLATION AND MAINTENANCE OF THE
HEATER MUST BE ACCOMPLISHED BY A
QUALIFIED SERVICE PERSON.
FAN OPERATING INSTRUCTIONS
1) Set switch to "FAN" mode.
2) Push "START" button.
To stop push the "STOP" button.

SE405 Manual Rev. 1.2 P/N:974-9885 Page 9SE405 Manual Rev. 1.2 P/N:974-9885 Page 9
PREVENTIVE MAINTENANCE
Sure Flame construction heaters are built to withstand the rigours of operating
on construction sites, in mining applications, and in a multitude of other
locations where heaters are used. To maintain the reliable performance
required it is necessary to do a certain amount of regular maintenance.
PERIODIC MAINTENANCE:
Weekly:
Gas Hose Check for cracks or damaged connectors
Obstruction of Air flow Clean & remove debris
Monthly:
Cords & Connectors Check for cracks, exposed wires & dirt in
electrical connectors. Clean with water and
dry out before connecting power.
Physical Integrity Check for damage to body, louvers and
inlet screens that may impact combustion
quality.
End of season:
Manifold Pressure Check for nominal pressure specified in
specification label. Adjust regulator
pressure if necessary.
Fan Blade Remove dirt buildup. Replace damaged or
unbalanced blades.
Strainer Inspect and clean if necessary.
Combustion Chamber &
Flame Rod
Remove nose cone and inspect inside for
integrity. Remove accumulated carbon
deposits with a wire brush. Clean flame
rod with solvent or emery cloth. Inspect
insulator for cracks. Check flame rod tip for
1/8” gap to ground. Install nose cone.
Gas leaks Using soapy water or gas leak detector
check all gas connections for leaks
Air Tubes Verify that air tubes are not blocked and
that they are securely attached with a 1/8”
gap from the combustion chamber wall.
Wiring &
Drain holes
Check the electrical box for loose or
overheated wires and connectors. Using a
dry cloth or compressed air clean bottom
drain holes if necessary. Check for
integrity of cover seal.

Page 10 P/N:974-9885 SE405 Manual Rev. 1.2
TROUBLESHOOTING CHART
Motor does not start
Symptom Problem
No electrical supply
Fuse or transformer failure (motor starts when
manual button on motor relay is pressed)
Start switch failure. (After engaging power relay
test button green light turns on)
Power relay failure
Stop switch failure
Motor relay failure. Motor won’t start (starts after
manual button is pressed in motor relay).
Motor failure
Thermostat failure (starts OK with Jumper Plug)
Thermostat and jumper not connected
Green light is on. Motor does not start in
Heat mode, but does start in Fan mode.
Error light on flame controller is on or
flashing
Flame control failure
Motor starts, but no flame
S
y
mptom Problem
Flame control failure
Flame rod wet
Manual valve closed
Limit switch failure. No continuity between
terminals
Air switch failure, air switch set to too high a
pressure, or air switch tubes blocked or in wrong
position
Solenoid valve failure
Second stage regulator set too high, solenoid
valve will not open
Upstream regulators installed backwards
Flame control failure
Poor quality power (such as from a generator).
Dirty signal or wrong hertz
Motor running in reverse (incorrect wiring on
replacement)
Ignitor failure. Cracked ceramic or Incorrect gap
to burner plate (should be 1/8")
Burner not grounded
Hose diameter too small and/or hose too long,
blocked hose
Low inlet pressure
Gas selector valve set to wrong fuel
Second stage regulator set too low
Main regulator setting too low
No green power light (after pressing start
button)
Green light is on. Motor does not start in
Heat mode, but does start in Fan mode.
No error lights on flame controller
Green light comes on when start button
pressed, but goes off when released
Green light is on. Motor does not start in
either Heat or Fan mode
Blower Motor starts, but burner does not
ignite. Flame controller error light flashes 2
times. No gas odor at heater outlet.
Blower Motor starts, but burner does not
ignite. Flame controller error light flashes 3
times. No gas odor at heater outlet.
Blower Motor starts, but burner does not
ignite. Flame controller error light flashes 3
times. Gas odor at heater outlet.

SE405 Manual Rev. 1.2 P/N:974-9885 Page 11SE405 Manual Rev. 1.2 P/N:974-9885 Page 11
TROUBLESHOOTING CHART (cont.)
Heater starts but then fails
Symptom Problem
Flame rod failure
Flame control failure
Changeover valve set to propane when
connected to natural gas Low heat, High CO ;
Random shutdown;
Second stage regulator set too low
Main regulator setting too low
Strainer plugged or dirty
Outlet duct too long or obstructed
Limit switch failure
Heater sensitive to wind gusts Air switch set to too high a pressure
Nose cone gap too small
Changeover valve set to natural gas when
connected to propane.
Connected to liquid propane
Main regulator setting too high
Blower motor overheats in function
(Thermal protection in motor); Random
shutdown
Poor quality power (such as from a generator).
Dirty signal or wrong hertz
Other Problems
Symptom Problem
Motor relay failure
Start switch failure
Normal function; Heater stops only if
unplugged
Stop switch failure
Flame interrupts in function. Frost on
propane tank
Propane tank too small to vapourize fast enough,
tank freezes
Burner unstable Nose cone gap too big
Irregular flame in combustion chamber.
Excessive carbon deposit in combustion
chamber; Burner unstable
Burner orifices plugged or dirty
Gas odor when no call for heat. Solenoid valve leak
Excessive heater noise. Vibrations Damaged or unbalanced fan blade
Operates in only heater mode, or only fan
mode
Toggle switch failure
Air switch failure
Air switch set to too low a pressure
Heater starts, but flame goes out about 4
seconds after igniting
Motor runs as soon as heater is plugged
in.
Excessive Flame; Heater stops after a few
minutes of function (High Limit Switch
opens)
Normal function-when inlet obstructed
flame shooting out (High Limit Switch
opens)
Heater starts, but fails after running for a
period of time

Page 12 P/N:974-9885 SE405 Manual Rev. 1.2
Note:: All wires 18 Ga STR TEW 600Vunless otherwise specified.
SE405 Connection Wiring Diagram
HEAT
3
2
1
FAN
24
SP
G
BL
1
2
3
4
5
6
7
8
9
HV
FENWAL 35-61
10
11
B.GND
V2 (G)
R (24)
L1
IND
NC
V1
Psw
TH
120VAC
24VAC
Transformer
CO I L
NO
NO
POWER RELAY
01
2468
NO
START
NC
STOP
2
1
X2 X1
3
4
1
NC
2
NO
P
COM
AIR
SWITCH
+
-
Ground
Screw
CO I L
NO
NO
BLOWER RELAY
0
1
2468
BROWN
(24VAC)
BLUE
(Call for
Heat)
GREEN
(GROUND)
Thermostat Plug
COM
24VAC
Gas Valve
COM
M
BLK
HiLi
WHT
M
14Ga HV
Spark
Plug
Fuse 2A
GRN
GRN
GRN
BRN
BRN
BRN
BRN
BRN
BRN
ORG
ORG
YEL
YEL
YEL
YEL
BLK
BLK
PRL
PRL
PRL
PRL
PRL
PRL
BLU
BLU
BLU
BLU
BLU
RED
RED 250°C
RED 250°C
GRN 250°C
BLU
WHT
BRN
WHT
Error
LED
To CC
Rev 1.0

SE405 Manual Rev. 1.2 P/N:974-9885 Page 13SE405 Manual Rev. 1.2 P/N:974-9885 Page 13
SE405 Ladder Wiring Diagram
TH
V2
P.Sw
V1
L1
GND
IND
24VAC
Supply
Thermostat
Input
Pressure
Switch
Valve
Neutral
Valve
Power
Inducer
Output
Hi Voltage
Output
Burner
Ground
24VAC
R
HV
NC
Alarm
M
Blower Motor
Air Pressure Sw. (NO)
Burner
Ground
Igniter
Gas Valve
Solenoid
24VAC
Inducer Power
Supply
Hi Limit Sw.(NC)
Thermostat
Jumper
Blower Relay
(24VAC Coil)
Power Relay
(24VAC coil)
START
(GREEN)
Power ON Lamp
(Start Button)
2
1
X1 X2
01
0
1
68
86
24
P2
13
COM
M
120/24VAC
Transformer
24VAC
COM120V
Fuse
N
L1
HEAT
3
21
FAN
NC
STOP
(RED)
NO
NO
34
Power Relay
(contacts)
Blower Relay
contacts

Page 14 P/N:974-9885 SE405 Manual Rev. 1.2
33
34
SE405 HEATER PARTS DIAGRAM
12
4
5
7
6
9
10
11
12
13
14
15
1617
18
19
20 22
27 23 24 25
26
28
29
30
31
41 42
43
44
45
47
49 50
51
5253
54
46

SE405 Manual Rev. 1.2 P/N:974-9885 Page 15SE405 Manual Rev. 1.2 P/N:974-9885 Page 15
Ref Part No. Description Ref Part No. Description
1 SE-4091 Top Cover 26 9831 Burner Head 2 9843 Limit Switch 27 SE-4712 Gas Line Assembly 4 SE-4018 Nose Cone 28 9834 Flare Adapter 5 SE-4725 Duct Adapter 29 SE-4718 Gas Selector Valve with Handle 6 SE-4507 Combustion Chamber 30 SE-4510 Inlet Coupling 7 SE-4518 Air T ube 31 9830 Gas Valve 9 SE-4027 Front Leg 33 SE-4715 Therm ostat Assem bly with Cord
10 SE-4090 Bottom Panel 34 2453 Thermostat 11 1525 Fan Blade 41 9872 Relay 12 9827 Motor 42 9879 Start Switch 13 6119 Semi-Pneumatic W heel 43 9880 Stop Switch 14 SE-4721 Wheel Assem bly 44 9881 Heat / Fan Switch 15 SE-4726 Blower Plate Assem bly 45 9882 Switch Gasket 16 SE-4509 Motor Mount 46 SE-4716 Therm ostat Jumper Plug 17 SE-4508 Control Box 47 WRS-163 Thermostat Receptacle 18 SE-4728 Right Inlet Panel 49 9828 Flame Control 19 SE-4723 Control Box Lid w/Jumper Plug 50 9823 Terminal Block 20 SE-4727 Left Inlet Panel 51 SE-4719 Air Switch 22 SE-4730 Electrode Assem bly 52 9884 Fuse, 2A/250V, Fast Acting 3AG 23 9833 Flare Elbow 53 9883 Fuse Holder 24 9832 Bowed Snap Ring 54 4510 24V 40VA Transformer 25 SE-4078 Burner Washer 55 SE-4521 18" duct adapter (not shown)

+40 F. +30 F. +20 F. +10 F. 0 F. -10 F -20 F. -30 F.
150 214,900 187,900 161,800 148,000 134,700 132,400 108,800 107,100
(600)
250 288,100 251,800 216,800 198,400 180,600 177,400 145,800 143,500
(1000)
500 478,800 418,600 360,400 329,700 300,100 294,800 242,300 238,600
(2000)
1000 852,800 745,600 641,900 587,200 534,500 525,400 431,600 425,000
(4000)
MAXIMUM BTU CONTENT
(PROPANE)
The following table shows the maximum BTU's that a cylinder contains.
CYLINDER SIZE BTU CONTENT
100 pound 2,159,100
250 gallon USA 22,922,500
500 gallon USA 45,845,000
1000 gallon USA 91,690,000
CAUTION: In extremely cold weather it is impossible to
completely empty a propane cylinder.
PRESSURE & FLOW EQUIVALENTS
1 Std. Atmosphere = 14.73 lb./sq. in. = 1.014 bar
1" Water Column (W.C.) = 0.58 oz./sq. in. = 2.49 millibar
11" Water Column = 0.4 lb./sq. in.= 27.39 millibar
1 lb./sq. in. (psig) = 27.71" W.C. = 0.0689 bar
1" Mercury = 0.49 psig = 33.86 millibar
1 Std. Cubic Ft./Hr. = 2,500 BTU/Hr. = 0.02832 cu. m/hr.
1 BTU/Hr. = 0.2931 Watts
LPG - PROPANE FUEL
VAPORIZATION RATE
The following chart shows the amount of BTU's that various sizes of tanks will
produce on the average at specific temperatures and regular atmospheric
conditions.
Tank Size
Gallons
(Pounds)
Maximum intermittent withdrawal rate (BTU/hr) without tank frosting*
if lowest outdoor temperature (average for 24 hours) reaches.
* Frosting on the outside of the tank acts as an insulator, reducing the
vaporization rate.