SE400 & SE400T
CONSTRUCTION HEATERS
October 24, 2011 Rev: 1.1 974-9909
SERVICE AND MAINTENANCE MANUAL
PLEASE RETAIN FOR FUTURE REFERENCE
PRODUCTS
A Division of Haul-All Equipment Ltd.
4115 - 18 Avenue North
Lethbridge, Alberta T1H 5G1
www.sureflame.ca
SE400 CONSTRUCTION HEATER
GENERAL HAZARD WARNING
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.
WARNING
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.
WARNING
Not for home or recreational vehicle use
Page 2 P/N:974-9909 SE400 & SE400T Manual Rev. 1.1
READ THIS
WARNING
FIRST !
The heater is designed and approved for use as a construction heater
under CSA 2.14a-2007. 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. 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 prohibits 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 local codes, and with the Natural
Gas and Propane Installation Code CSA-B149.1.
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.
SE400 & SE400T Manual Rev. 1.1 P/N:974-9909 Page 3
SE400/SE400T CONSTRUCTION HEATER
FOR YOUR SAFETY
DO NOT USE THIS HEATER IN A SPACE WHERE
GASOLINE OR OTHER LIQUIDS HAVING
FLAMMABLE VAPOURS ARE STORED OR USED.
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
SE400 Connection Wiring Diagram ........................................................ 12
SE400 Ladder Wiring Diagram ............................................................... 13
SE400T Connection Wiring Diagram ...................................................... 14
SE400T Ladder Wiring Diagram ............................................................. 15
SE400 Heater Parts ............................................................................... 16
LPG - Propane Fuel Vaporization Rate ................................................... 18
Page 4 P/N:974-9909 SE400 & SE400T Manual Rev. 1.1
SPECIFICATIONS
Model No. SE400/SE400T 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: 32’ (9.8 m)
Duct Diameter: 16” or 18”
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)
SE400 & SE400T Manual Rev. 1.1 P/N:974-9909 Page 5
INSTALLATION
The Sure Flame Model SE400 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 32 feet of 16” or 18” ductwork.
Ductwork must be able to handle temperatures of up to 200°C (392°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.
Page 6 P/N:974-9909 SE400 & SE400T Manual Rev. 1.1
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 dangerous 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 and with CSA-B149.1
Natural Gas and Propane Installation Code.
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 and with CSA-B149.1 Natural Gas and Propane
Installation Code.
SE400 & SE400T Manual Rev. 1.1 P/N:974-9909 Page 7
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 second.
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 Natural Gas and Propane Installation Code CSAB149.1.
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.
Page 8 P/N:974-9909 SE400 & SE400T Manual Rev. 1.1
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
Gas leaks Using soapy water or gas leak detector
Air Tubes Verify that air tubes are not blocked and
Wiring &
Drain holes
SE400 & SE400T Manual Rev. 1.1 P/N:974-9909 Page 9
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.
check all gas connections for leaks
that they are securely attached.
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.
TROUBLESHOOTING CHART
Motor does not start
Symptom Problem
No gr een powe r ligh t (after p ress ing start
button)
Green light comes on when start button
pressed, but goes off when released
Green light i s on. Motor does not start in
either Heat or Fan mode
Green light i s on. Motor does not start in
Heat mode, but does start in Fan mode.
No error lights on flame controller
No electrical supply
Fuse or transformer failure (motor starts when
manual button on motor relay is pressed)
Start s witch failure. (After engaging power re lay
test button green light turns on)
Power relay failure
Sto p switch fail ure
Motor relay failure. Motor won’t start (starts after
manual button is pressed in motor relay).
Motor failure
Thermostat failure (starts OK with Ju mper Plug)
Thermostat and jumper not connected
Green light i s on. Motor does not start in
Heat mode, but does start in Fan mode.
Error light on flame controller is on or
flashing
Motor starts, but no flame
Symptom Problem
Blower Motor starts, but burner does not
ignite. F lame controller error light flashes 2
times. No gas odor at heater outlet.
Blower Motor starts, but burner does not
ignite. F lame controller error light flashes 3
times. No gas odor at heater outlet.
Blower Motor starts, but burner does not
ignite. F lame controller error light flashes 3
times. Gas odor at heater outlet.
Flame co ntro l failure
Flame co ntro l failure
Flame rod wet
Manual valve closed
Limit s witch failure. No con tinuity between
terminals
Air proving switch failure, air switch set too high,
or restricted duct switch set too low; Tu bes or air
restrictor blocked or in negative pressure
posi tion
Solenoid valve failure
Seco nd s tage regulator set too high, sole noid
valve will not open
Upstream regulators installed backw ards
Flame co ntro l failure
Poor quality po wer (s uch as from a ge nera tor).
Dirty signal or wrong h ertz
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 diam eter t oo s mall and/or hose too long ,
bloc ked hose
Low inlet press ure
Gas selector valve set to wrong fuel
Seco nd s tage regula tor s et too low
Main regulator setting too low
Page 10 P/N:974-9909 SE400 & SE400T Manual Rev. 1.1
TROUBLESHOOTING CHART (cont.)
Heater s tarts but then fails
Symptom Problem
Heat er starts , but flam e goes out abou t 4
se co nds after ign it ing
Heat er starts, but fails aft er run ning fo r a
period of time
Heat er sens itive to wind gusts Restri cted duct switch set to too lo w a pressure
Excessive Flame; Heater stops after a few
minutes of function (High Limit Switch
opens)
Blow er motor overheats in function
(Thermal protection in moto r); Random
shutdown
Other Problems
Symptom Problem
Motor run s as soon as he ater is pl ugged
in.
Nor mal function; Heate r sto ps only if
unplugged
Flame interrupts in function. Frost on
propane tank
Burner unstable Nose cone gap too big
Irregular flame in combustion chamber.
Excessive carbon deposit in combustion
ch amber; Burner unstab le
Gas odor when no call fo r heat. Solenoid va lve leak
Exc essive hea ter no ise. Vibrations Damaged or u nbal anced fan blade
Operate s in only he ater mode , or o nly f an
mode
Normal function- when i nlet obst ructe d
flame shooting out (High Limit Switch
opens)
Flame rod failure
Flame co ntro l failure
Changeover valve set to propane when
conn ected to natu ral gas Lo w heat, High CO ;
Random shutdown;
Seco nd s tage regula tor s et too low
Main regulator setting too low
Strainer plugged or dirty
Outl et duct too long or ob structed
Limit s witch failure
Nose cone gap too small
Changeover valve set to natural gas when
conn ected to propa ne.
Connected to liquid propane
Main regulator setting too high
Poor quality po wer (s uch as from a ge nera tor).
Dirty signal or wrong h ertz
Motor relay failure
Start s witch fa ilure
Sto p switch fail ure
Propane tank too small to vapourize fast enough,
tank freezes
Burner orifices plugged or dirty
Toggl e switch failure
Air switch failure
Restricted duct switch set to too high a press ure
SE400 & SE400T Manual Rev. 1.1 P/N:974-9909 Page 11
SE400 Connection Wiring Diagram
PRL
Ground
Screw
1
C O I L
0
BLU
1
C O I L
0
COM
Transformer
BRN
Y
LA
E
R
R
E
W
LO
B
Y
LA
E
R
IC
G
LO
24VAC
Fuse 2A
Gas Valve
NO
NO
NO
NO
PRL
WHT
120VAC
24VAC
8
6
WHT
4
2
BLU
8
6
4
2
BLK
BLK
BLK
COM
M
ORG
Spark
Plug
14Ga HV
HV
YEL
YEL
ORG
GRN 16Ga
1
2
3
4
5
6
7
8
9
10
11
WHT 16Ga
-
M
RESTRICTED
P
O
C
DUCT SW.
B.GND
V2 (G)
R (24)
L1
IND
NC
V1
Psw
TH
+
WHT
C
1
N
BLK 16Ga
WHT 16Ga
WHT
O
2
N
PRL
YEL
24
BL
SP
G
PRL
PRL
BRN
BRN
BRN
BLK 16Ga
GRN
Error
LED
HiLi
RED 250°C
RED 250°C
GRN 250°C
BLU
L+
T
NO
R
BLU
COM
COM
L 35-61
A
W
N
E
F
BRN
BRN
RED
A
N O
T
S
L-
PRL
P
O
T
N C
S
NC
HEAT
3
2
1
FAN
YEL
BLU
M
+
AIR
PROVING
SW.
2
1
NC
RED
O
N
-
M
P
O
C
Rev 1.1
Page 12 P/N:974-9909 SE400 & SE400T Manual Rev. 1.1
Note:: All wires 18 Ga STR TEW 600Vunless otherwise specified.
SE400 Ladder Wiring Diagram
N
L1
Fuse
(GREEN)
24VAC
START
1
2
COM120V
120/24VAC
Transformer
X1
Power Relay
(24VAC coil)
1
Power ON Lamp
(Start Button)
X2
0
NO
Valve
Power
Valve
Neutral
Alarm
Thermostat
Input
Pressure
Switch
Inducer
Output
Burner
Ground
Hi Voltage
Output
24VAC
V1
V2
NC
TH
P.Sw
R
L1
IND
GND
HV
Hi Limit Sw.(NC)
24VAC
Supply
Inducer Power
Supply
STOP
(RED)
34
NC
Duct Restricting Sw.
P1
Igniter
Power Relay
(contacts)
68
Air Proving Sw.
P
NC NO
NO
2
M
COM
Gas Valve
Solenoid
24VAC
2
HEAT
M
Blower Motor
FAN
3
1
Blower Relay
(24VAC Coil)
01
86
Blower Relay
contacts
Burner
Ground
24
SE400 & SE400T Manual Rev. 1.1 P/N:974-9909 Page 13
SE400T Connection Wiring Diagram
L
R
P
Ground
Screw
1
L
I
O
C
0
BLU
1
L
I
O
C
0
COM
Transformer
N
R
B
Rev 1.1
Y
A
L
E
R
R
E
W
O
L
B
Y
A
L
E
R
R
E
W
O
P
24VAC
Fuse 2A
Gas Valve
O
N
O
N
O
N
O
N
PRL
WHT
120VAC
24VAC
8
6
4
2
BLU
8
6
4
2
BLK
COM
M
ORG
Spark
Plug
14Ga HV
HV
L
E
Y
YEL
M
RESTRICTED
P
O
C
WHT 16Ga
1
2
B.GND
3
V2 (G)
4
R (24)
5
6
L1
7
IND
8
NC
9
V1
Psw
10
11
TH
+
-
DUCT SW.
ORG
BLK 16Ga
BLK 16Ga
BLU
GRN
WHT
O
2
N
C
1
N
PRL
WHT 16Ga
GRN 16Ga
BRN
BRN
GRN
ORG
L
E
Y
24
BL
SP
G
L
R
P
N
R
B
L
R
P
Error
LED
HiLi
C
°
C
0
C
°
0
5
2
N
R
G
1
6
5
3
L
A
W
N
E
F
°
5
0
5
2
D
2
E
D
R
E
R
BLU
BLU
BRN
BRN
D
E
R
1
X
2
T
R
O
A
N
T
2
S
1
X
PRL
3
P
O
C
T
N
S
4
HEAT
3
2
1
L
E
Y
U
L
B
N
R
B
FAN
M
Thermostat Plug
GREEN
(GROUND)
(Call for
BLUE
Heat)
P
-
M
O
C
+
AIR
PROVING
SW.
C
1
N
BROWN
(24VAC)
D
E
R
O
2
N
Page 14 P/N:974-9909 SE400 & SE400T Manual Rev. 1.1
Note:: All wires 18 Ga STR TEW 600Vunless otherwise specified.
SE400T Ladder Wiring Diagram
N
L1
COM120V
1
24VAC
2
120/24VAC
Transformer
X1
Power Relay
(24VAC coil)
1
Power ON Lamp
(Start Button)
X2
0
Fuse
START
(GREEN)
NO
STOP
(RED)
Valve
Power
Valve
Neutral
Alarm
Thermostat
Input
Pressure
Switch
Inducer
Output
Burner
Ground
Hi Voltage
Output
24VAC
V1
V2
NC
TH
P.Sw
R
L1
IND
GND
HV
Hi Limit Sw.(NC)
24VAC
Supply
Inducer Power
Supply
34
NC
Restricted Duct Sw.
1P
NC NO
Jumper
Thermostat
13
Igniter
Power Relay
(contacts)
68
NO
Air Proving Sw.
P2
M
COM
Gas Valve
Solenoid
24VAC
Blower Motor
2
HEAT
M
FAN
3
1
Blower Relay
(24VAC Coil)
01
86
Blower Relay
contacts
Burner
Ground
24
SE400 & SE400T Manual Rev. 1.1 P/N:974-9909 Page 15
41
42
43
46
47
31
30
32 40
SE400 & SE400T HEATER PARTS DIAGRAM
2
3
4
5
6
44
39
45
38
37
36
3534
33
7
8
9
10
1
24
26
27
29
28
Page 16 P/N:974-9909 SE400 & SE400T Manual Rev. 1.1
23
22
21
25
20
19
18
11
12
13
1415
16
17
1 SE-4091 Top Cover 25 SE- 4712 Gas Line Assembly
2 9843 Limit Switch 26 9834 Flare Adapter
Ref Part No. Description Ref Part No. Description
SE400 & SE400T Manual Rev. 1.1 P/N:974-9909 Page 17
3 SE-4018 Nose Cone 27 SE- 4718 Gas Selector Valve with Handle
4 SE-4725 Duct Adapter 28 SE- 4510 Inlet Coupling
5 SE-4507 Combustion Chamber 29 9830 Gas Valve
6 SE-4151 Bulkhead Fitting 30 SE- 4715 Thermostat Assembly with Cord
7 SE-4027 Front Leg 31 2453 Thermostat
8 SE-4090 Bottom Panel 32 9872 Relay
9 1525 Fan Blade 33 4510 24V 40VA Transformer
10 9827 Motor 34 9883 Fuse Holder
11 6119 Semi-Pneumatic Wheel 35 9884 Fuse, 2A/250V, Fast Acting 3AG
12 SE-4721 Wheel Assembly 36 SE- 4732 Restricted Duct Switch
13 SE-4726 Blower Plate Assembly 37 SE- 4731 Air Proving Switch
14 SE-4509 Motor Mount 38 9823 Terminal Block
15 SE-4508 Control Box 39 9828 Flame Control
16 SE-4728 Right Inlet Panel 40 9879 Start Switch
17 SE-4716 Thermostat Jumper Plug 41 9880 Stop Switch
18 SE-4723 Control Box Lid w/Jumper Plug 42 9881 Heat / Fan Switch
19 SE-4727 Left Inlet Panel 43 9882 Switch Gasket
20 SE-4730 Electrode Assembly 44 WRS-163 Thermostat Receptacle
21 9833 Flare Elbow 45 SE- 4145 Air Tube Damper
22 9832 Bowed Snap Ring 46 1707 Air Tube
23 SE-4078 Burner Washer 47 1181 Barb Y Fitting
24 9831 Burner Head 48 SE-4521 18" duct adapter (not shown)
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)
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)
* Frosting on the outside of the tank acts as an insulator, reducing the
Maximum intermittent withdrawal rate (BTU/hr) without tank frosting*
if lowest outdoor temperature (average for 24 hours) reaches.
+40 F. +30 F. +20 F. +10 F. 0 F. -10 F -20 F. -30 F.
vaporization rate.
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
Page 18 P/N:974-9909 SE400 & SE400T Manual Rev. 1.1
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