Frost Fighter DF 400 User manual

MODEL DF 400
MODEL DF 1500
OCTOBER 2009
TO PRESENT
Installation - Operation
Maintenance Instructions
and Parts List
READ INSTRUCTIONS PRIOR TO STARTING HEATERS
ICE MANUFACTURING LTD.
51 AIKINS STREET
WINNIPEG, MANITOBA
CANADA R2W 4E3
TEL : [phone]
FAX: [phone]
FROSTFROST
ICE MANUFACTURING LTD.
100-1500 NOTRE DAME
WINNIPEG, MANITOBA
CANADA R3P 0E9
TEL : [phone]
FAX: [phone]
TOLL FREE: [phone]
WWW.FROST-FIGHTER.COM
DIRECT FIRED SPACE HEATERS
PROPANE AND NATURAL GAS
OCTOBER,2009

FROSTFIGHTER WARRANTY
I.C.E. Mfg. Ltd. warrants the Frostfighter heater to be free from defects in
workmanship and materials for a period of twelve (12) months from date of initial
service not to exceed fifteen (15) months from date of shipment.
If during the warranty period, the heat exchanger fails under normal use and service
due to a defect in material or workmanship said heat exchanger will be repaired or
replace free of charge F.O.B. the Winnipeg Factory..
All mechanical and electrical components are covered by a one (1) year limited
warranty. Normal maintenance items are excluded under the warranty. The
warranty does NOT include any freight, labor or sales taxes incurred by the
purchaser and is subject to the following conditions:
1. The heater shall be operated in accordance with the manufacturer’s
operating and maintenance manual.
2. The heater shall be subject to normal use in service and shall not have
been misused, neglected, altered or other wise damaged.
3. The unit shall be operated within the rated capacities and with the
prescribed fuel.
4. The unit has not been allowed to exceed its proper temperature limits due
to control malfunction or inadequate air circulation.
5. There is no evidence that the unit has been subject to tampering or
deliberate destruction.
No representative of I.C.E. Mfg. Ltd., nor any of its distributors or dealers, is
authorized to assume for I.C.E. Mfg. Ltd. any other obligations or liability in
connection with this product, not alter the terms of the warranty in any way. This
warranty is limited to the express provisions contained herein and does not extend to
liability for labor costs incurred in replacing defective parts.
Parts can be obtained from I.C.E. Mfg. Ltd., Winnipeg, Manitoba on the basis that
credit will be issued if the defective parts returned qualify for replacement pursuant to
the terms and conditions of this warranty. Authorization to return any alleged
defective parts must be first obtained from the factory prior to transporting the part.
The transportation charges for the alleged defective part must be prepaid by the
owner. I.C.E. Mfg. Ltd. will not accept charges for parts purchased unless the
conditions of this warranty have been satisfied and prior authorization to purchase
the parts has been received from the factory.
100-1500 NOTRE DAME , WINNIPEG, MANITOBA
R3P 0E9, [phone], 1-888-792-0374

1
GENERAL HAZARD WARNING
INSTALLATION- OPERATION
MAINTENANCE INSTRUCTIONS
READ INSTRUCTIONS PRIOR TO OPERATING HEATER
FAILURE TO COMPLY WITH 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 HEATING UNIT.
IF YOU REQUIRE 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 MATERIAL, PAPER AND/OR CARDBOARD A SAFE DISTANCE
AWAY FROM THE HEATER AS RECOMMENDED BY THE INSTRUCTIONS. NEVER
USE THE HEATER IN SPACES WHICH MAY CONTAIN VOLATILE OR AIRBORNE
COMBUSTIBLES, OR PRODUCTS SUCH AS GASOLINE, SOLVENTS, PAINT
THINNER, ACETONE, DUST PARTICLES AND/OR UNKNOWN CHEMICALS.
WARNING
THIS PRODUCT IS NOT INTENDED FOR HOME OR RECREATIONAL VEHICLE USE.
GENERAL NOTES:
NATURAL GAS CODE: B149.1
PROPANE GAS CODE: B149.2
ALL GAS INSPECTION AUTHORITIES IN CANADA REQUIRE THAT THE
INSTALLATION AND MAINTENANCE OF HEATER AND ACCESSORIES
SHALL BE ACCOMPLISHED BY A QUALIFIED GAS FITTER.
FOR YOUR SAFETY
DO NOT USE THIS HEATER IN A SPACE WHERE GASOLINE OR OTHER LIQUIDS
HAVING FLAMMABLE VAPOURS ARE STORED OR USED.
THE INTENDED USE OF THIS HEATER IS FOR THE TEMPORARY HEATING
OF BUILDINGS OR STRUCTURES UNDER CONSTRUCTION, ALTERATION
OR REPAIR.

SPECIFICATIONS
The heaters are designed and approved for use as gas fired unvented construction
heaters under applicable requirements of ANSI Z83.7 and CGA 2.14.
MODEL
Heat
Capacity
Fuel
Fan Motor
Minimum Inlet
Pressure
Air Capacity
Manifold
Pressure
DF-400
400,000
Btu/hr
DF-1500
1,500,000
Btu/hr
Natural or
Propane
½ Hp 1750
RPM
2500 cfm
LP=1.4
NG=3.5
7700cfm
1 Hp 1750
RPM
Natural or
Propane
COMMON INSTALLATION AND OPERATING PROBLEMS
1. LOW VOLTAGE: (MOST COMMON PROBLEM)
-Wire guage for supply cord is too small. If guage is too small, low voltage can result, with the motor
over heating, burnt relay contacts, or a relay that will not maintain contact.
2. Gas supply line is too small.
3. Improper gas supply pressure.(ensure gas supply connected to correct union as per operating
instructions.)
4. Insufficient vaporization at supply (propane unit).
-Normally caused by too small size of tank, or in cold conditions operating without a vaporizer.
5. Dirty gas supply.
6. Lack of preventative maintenance-burner parts and fan blades must be cleaned as required, especially
when used in a dirty environment
7. Improper supply of fresh air.-in an enclosed area, intake air should be from outside. This slight
pressurization, prevents problems associated with recirculation.
2
Maximum Inlet
Pressure
Minimum Temp
Rating
Fuel
Consumption
Propane
Fuel
Consumption
Natural
Approval
Agency
Overall
Dimensions
Crated
Weight
Electrical
LP=1.5
NG=3.6
7.0“
w.c.
7.0“
w.c.
14.0“
w.c.
14.0“
w.c.
-40°C/°F -40°C/°F
157 CFH
4.5USGPH
589 CFH
16.8 USGPH
390 CFH 1461 CFH
ETLETL
30 1/2”W“
51”L
33”H
39 1/2” W
74 1/4” L
52 1/2” H
145 lbs. 360 lbs.
120 V
15 amps
120 V
20 amps

GENERAL NOTES:
1. The heater is designed and approved for use as a construction heater under ANSI
Z83.7 and under CGA 2.14.
2. ICE cannot anticipate every use, which may be made of our heaters. CHECK WITH
YOUR LOCAL FIRE AND SAFETY AUTHORITY IF YOU HAVE QUESTIONS ABOUT SAFE
APPLICATIONS.
3. Other standards govern the use of fuel gases and heat producing products in specific
applications. Your local authority can advise you about this issue.
4. Please retain this instruction manual for future reference.
5. The primary application of this heater is for temporary heating of construction sites
and/or applications of this type.
6. Check Rating Plate on heater for set up specifications.
7. For information about replacement parts call toll free 1-888-792-0374
ELECTRICAL NOTES:
1. All electrical connections and grounding shall be in compliance with the National
Electrical Code,ANSI/NFPA70 and/or the Canadian Electrical Code (CSA Standard C22.1-98).
2. WARNING: Electrical grounding instructions… This appliance is equipped with a three
prong (grounding) plug for your added protection against electrical shock hazard and should be plugged
directly into a properly grounded three-prong receptacle.
INSTALLATION INSTRUCTIONS:
1. The National Fuel Code, ANSI 223.1/NFPA 54 and/or National Gas and Propane
Installation Code CSA B149.1 installation codes must be followed as well as the recommendations of
local authorities having jurisdiction.
2. Inspect the heater before each use and have it annually inspected by a qualified
agency.
3. The hose assembly shall be visually inspected prior to each use of the heater. If it
is evident there is excessive abrasion or wear, or the hose is cut, it must be replaced prior to the heater
being put into operation. The replacement hose assembly shall be specified by the manufacturer. The
hose assembly shall be protected from traffic, building materials and contact with hot surfaces both during
use and while in storage.
4. When firing the unit in an enclosed area, three square feet (0.278 square meters),
must be provided to allow free entry of the air required for operation.
5. Do not operate the unit in areas that do not have proper ventilation.
6. Do not obstruct the flow of combustion and ventilation air through the unit.
7. Do not operate the unit in close proximity to combustible surfaces, materials, gasoline,
and other flammable vapours and liquids.
8. 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 will damage the controls and
void the warranty. See page 13 for gas hook up and inlet pressures.
9. After installation, check the manifold assembly for gas leaks by applying a water and
soap solution to each connection.
10. Connect the heater to an adequate 115-volt electrical supply as specified on the
rating plate. For protection against shock hazard the supply cord must be plugged into a properly
grounded three-prong receptacle.
11. In all applications, install the heater in such a manner that it is not directly exposed to
water spray, rain and/or dripping water
!12. Ensure the unit is installed on a level surface
.ADDITIONAL INSTRUCTIONS FOR PROPANE GAS:
13. The installation must conform with local codes or, in the absence of local codes,with
the Standard for the Storage and Handling of Liquified petroleum Gases,ANSI/NFPA 58 and the Natural
Gas and Propane Installation Code,CSAB149.1
!14. The heater must be located more than ten (10) feet (3 meters) away from the
propane source or propane tank.
15. The heater must not be directed toward any propane gas container within 20 feet (6.1
meters).
!16. Ensure that the size and capacity of the propane supply container is adequate to
provide the rated Btu/h input for the surrounding temperature.
3

17. IT IS DANGEROUS TO SUPPLY LIQUID PROPANE TO THE HEATER. Arrange the
propane supply system to provide for vapour withdrawl from the operating source.
18. The connection and disconnection of the propane source must conform with CAN/CGA
B149.2 Propane Installation Code and any applicable local codes. Refer to the Gas Leakage Test
section of this manual for leak testing procedures.
19. When the heater is not in use insure to shut off the gas supply from the propane source or
propane tank.
20. Minimum LP tank capacity is as follows:
DF 400 300 pounds
DF 1500 500 gallon tank
21.The unit has a 3/4” NPT pipe union (Df400) or a 1 1/4” NPT pipe union (Df1500) for the
fuel line connection. Connect/disconnect the union to supply/remove the fuel source.
22. When the heater is to be stored indoors, the connection between the propane supply
cylinder(s) and the heater must be disconnected and the cylinder(s)removed from the heater and stored
in accordance with the Standard for the Storage and Handling of Liquified Petroleum Gases,
ANSI/NFPA58 and CSA B149.1, Natural Gas and Propane Installation Code.
CLEANING INSTRUCTIONS:
1. The unit should be cleaned externally with soap and water.
2. Ensure that the electrical control box is closed before cleaning unit.
3. Ensure that the power cord is disconnected before cleaning.
4. Ensure that the fuel supply is off and disconnected before cleaning.
INSTALLATION CLEARANCES FROM COMBUSTIBLES:
. Front Outlet = 20 Feet (6M)
Intake = 2 Feet (0.6M)
Sides = 2 Feet (0.6M)
Top = 4Feet (1.2M)
CAUTION
1. The electrical box must be closed to ensure operator(s) safety when operating the unit.
2. Do not shut off unit by disconnecting supply cord. Turn gas off, wait for unit to shut off
automatically. Then flip toggle switch to off position. Disconnect power supply cord from outlet.
3. The gas supply line length cannot be less than 15 feet (4.6 meters) and not greater than 25
feet (8 meters).
OPERATING INSTRUCTIONS
1.Turn off main gas firing valve ( yellow handle).
2. Check that the supply gas and conversion valves are set to the same gas type.
3. Once valve setting is verified, turn on main gas firing valves to open position.
4 Check that the operating switch on the unit is in the "OFF" position before plugging
supply cord to a 115 VAC outlet.
5. Plug power supply cord to a 115 VAC outlet.
6. Flip toggle switch to either manual or thermostat position.
7. If thermostat position ,set thermostat to desired temperature.
8. To stop heater, turn off gas, wait for unit to shut off automatically. Then flip toggle
switch to off position. Disconnect power supply cord from outlet.
*IF HEATER FAILS TO START, REFER TO TROUBLE SHOOTING GUIDE
4

SEQUENCE OF OPERATION DF400
1. Flip toggle switch to either manual or thermostat position.
2. The supply fan starts immediately.
3. When the fan starts, the air proving switch will close and through the high limit will power up the ignition
controller.
4. The ignition controller will flash red for one second then will pre-purge for five seconds. Then the gas
valve will be energized, the ignitor will spark for four seconds and the burner on light will come on.
The flame failure light is on during the purge period.
5. When the flame is detected, spark will shut off.
6. Unit will run till call for heat is satisfied, either through thermostat or turning toggle switch to off position.
**IF HEATER FAILS TO START REFER TO TROUBLESHOOTING GUIDE**
The sequence for the DF1500 is the same as above except for a two stage firing system ( low and high
fire)
7. When the toggle switch is placed in the high fire position, a gas valve delay timer is energized. This will
provide a 15 second delay before unit goes to high fire so as not to have too much gas going into the
burner upon ignition. DF-1500 operates at either low fire or high fire by the position of the toggle
switch.
TOGGLE POSITION OPERATION
Manual-Low Fire Unit will run only on low fire
Manual-High Fire Unit will run on low fire for 15 seconds, then
goes to and remains on high fire.
Manual-Thermostat Unit will run on high fire till call for heat
is satisfied. Unit will then go to and remain
on low fire
Thermostat-Low fire Unit will run on low fire until call for heat
is satisfied then unit will shut off.
Thermostat-High Fire Unit will run on high fire until call for heat
satisfied then unit will shut off.
Thermostat-Thermostat Unit will run on high fire until temperature
rises to within 3 degrees F of set
temperature on thermostat. It will then go to
low fire until reaching set temperature, then
the unit will shut down.
!
5
HIGH FIRE
LOW
FIRE
THERMOSTAT
MANUAL
OFF
THERMOSTAT

6
STANDARD GAS CONVERSION PROCEDURE
CHECK TYPE OF GAS BEING USED FOR OPERATION. SUITABLE GASES ARE NATURAL GAS AND PROPANE
GAS.
Propane Gas
1. For propane gas use, the conversion valve must be placed in the propane gas position as per the label on
the unit. This is the closed position of the red handled ball valve on the manifold. Handle should be 90’ to the
valve.
2 Once in the closed position, the valve must be locked in that position so that the unit will operate safely.
Natural Gas
1. For natural gas use, the conversion valve must be placed in the natural gas position as per the
label on the unit. This is the open or parallel position to the manifold. Red handled ball valve must be in
line with the manifold.
2. Once placed in the open position, double check that you are using natural gas. Propane used in
this open position could present a hazardous situation.
DF MAINTENANCE INSTRUCTIONS.
!WARNING!: Maintenance should be performed by trained personnel only.
Incorrect maintenance may result in improper operation and serious injury. The
unit should be inspected before each use and at least annually.
All components should be regularly checked as follows:
High Limit Switch
The high limit switch should be checked to ensure the burner will shutdown if supply air temperature
exceeds 220’F This can be done by placing an operating unit behind the test unit so its discharge air is
drawn into the supply air of test unit.
Gas Valve Delay Timer (DF1500)
This timer should be regularly checked to ensure proper high fire operation. To do this, turn unit onto
MANUAL-HIGH FIRE. After 15 seconds, unit should go from low to high fire.
Air Proving Switch
Remove 1/4” aluminum tubing from inside chamber ( behind fan blade) and blow out with air pressure
to ensure no obstructions are inside tube. Replace tube, then with a minimum of 12” X 12” piece of
cardboard, place at the top center of the end plate screen. Start unit with gas off. The unit should run for
15 seconds without the burner on light coming on, or the ignition controller LED light flashing then shut
off. If the blower on light does come on, replace air switch.
Ignition Controller
With gas off, start machine. Red light on controller should flash for 1 second then stay off. After 5
seconds, ignitor should spark for 4 seconds, then red light should flash 3 times then unit will shut down.
With gas on, start unit. Once flame is proven, turn off yellow handled ball valve. Once controller senses
flame loss, it should try for ignition (spark) for 4 seconds, then flash red 3 times to indicate flame failure.
Flame Current Check Single Spark and Sense
To measure flame current, disconnect the input voltage, and attach the leads from the multimeter with a DC
microampere scale to FC+ and FC-terminals to the 35-70 flame sense test pins found on the Fenwal ignition
controller. Reconnect the input voltage and initiate the call for heat. After sparking is complete and the flame is
established, the meter should read 1.0 DC microamperes or higher. If meter reads below “0” on the scale,
meter leads are reversed. Disconnect power and reconnect meter leads for proper polarity.
Motor
To prevent motor overheating, ensure motor is clean and free of dust and dirt.

Thermostat
Check thermostat by turning unit to thermostat mode, unit should start and stop according to call for heat from
stat.
Spark plug
Should be checked regularly to ensure a good spark. Set gap at 1/16”.
Manifold-Gas leak testing
After removal for service or replacing components on the gas manifold, a gas leak test must be performed.
1.Close main gas firing valve on the gas manifold.
2.Connect your source of gas to the gas manifold.
3. Once connections are tightened, open source gas. Start unit
4. On each connection and fitting apply soap solution and check for bubbles. This will indicate a
gas leak if bubbles continue to form.
5. Fix any leaks that are found by applying pipe dope to the leaking fitting or connection and re-
tighten. Check for leaks once repairs, if any, are made.
6. Open main gas firing valve and start the unit.
7. Once the unit is operating and the burner is running, redo the soap test to ensure gas fittings are
tight.
8. Fix any leaks found.
7
ROUTINE MAINTENANCE
1. VISUAL CHECKS:
-Wheels, check to ensure bolts are tight
-Heater shell, control box and heat shield
-End plate with screen, ensure all holding screws are in place
-Frame, no major dents or cracked welds
2. BURNER MAINTENANCE:
Igniter/sensor = Clean with soft wire brush, or solvent and check gap.
Igniter wire = Check for cracked insulation and ends to ensure a good connection.
Ground wire = Ensure ground wire is secured to the metal housing, as this is necessary for the flame
detection system to operate.
3. CONTROL BOX:
-Inside the control box should be cleaned using a dry cloth or by blowing compressed air.
- Do not use any liquid or aerosol spray cleaners.
-Check that all electrical connections are snug and tight.
4. ELECTRICAL
-Plug in cord, open cord and check all connections, make sure tight and no frayed wires exposed
-Check conduit, make sure all BX connectors are tight.
5. FAN:
-Check for dust or dirt build up on fan blades.
-Check the tightness of the set screw.
-Run the heater to check for fan vibration
(replace fan blade if vibrations are noticeable

8
SAFETY FEATURES
1. LOSS OF FLAME:
-Gas supply will shut down if flame is lost to prevent raw gas from leaving the heater.
2. OVERHEATING:
-Thermal overload protection in motor.
-High limit switch to prevent unit from over heating.
3. LOSS OF POWER:
-If a safety feature is damaged/ wired incorrectly, the unit will shutdown.
-Unit will require manual reset if insufficient power or incorrect gauge of wire.
4. BLOCKED AIR SUPPLY:
-The air proving switch detects air flow
-If there is low or no air flow the burner will not fire.
5. FLAME FAILURE LIGHT:
- Safety red light will come on in case of flame failure

DF TROUBLE SHOOTING GUIDE
ALWAYS DOUBLE CHECK FOR SUFFICIENT POWER AND GAUGE OF CORD,
POLARITY AND GAS PRESSURE
1. Unit will not start.
*Check for 115 volts AC across terminals 1 and 2. If no voltage check power source.
*Check 15 amp circuit breaker. Reset if required..
*Check for power on terminal 3. If no power, check toggle switch or thermostat to ensure they are
working properly.
*Check wiring on motor, if wired correctly, and has 110V coming in, replace motor.
2. Burner will not ignite.
*Check polarity.
*Make sure conversion valve is in proper position for gas being used.
*Ensure you have proper gas pressure coming into machine. Please refer to page 13.
*Ensure that the air inlet is not blocked.
*Light on ignition controller should blink red once on start up.
*Remove red L1 wire from ignition controller. Check for power during trial for ignition (4 seconds). If
none, check high limit and replace if necessary.
*Check for 115V across V1 and V2 on ignition controller during trial for ignition. Check neutral line, L2,
and grounds are tight. If OK, then replace ignition controller if no power at V1 and V2.
*Solenoid valve should click at start of ignition. Check for gas pressure at 1/8” tap on elbow before
burner. If no pressure, replace solenoid or 2 stage valve.
*Check that spark plug is properly connected to ignition wire and is not cracked or chipped. Gap is
1/16” check ignition wire is not damaged. Ensure spark plug is screwed all the way in and is
fairly tight.
!*Check air switch. During trial for ignition (4seconds) check for power on terminal 4 and on terminal 5.
!If there is no power on terminal 5 and not on terminal 6 the air switch tubing is blocked or the air
!switch is faulty
!
!3. Burner ignites but then stops.
*Check ignition wire connections, check spark plug and ignition wire for damage.
*Check polarity.
*Ensure ignition controller is receiving 1.0 DC microampere signal. (Refer to maintenance on flame
current check.) If signal at controller replace controller. No signal check spark plug and wire.
!4. Flames extend out of the unit.
*Check that the LP/NG (red handle) valve is in the proper position for the fuel that is being used.
*Check that the manifold pressure is at the proper setting.
*The following apply only to DF1500 units.*
Heater does not cycle from low to high flame
*Check thermostat to ensure wires tight and working properly.
*Check black wire going into gas valve delay timer for 115V. If no power while thermostat set at
temperature at
least 5 degrees higher than room temperature, replace thermostat.
*If no power on black wire ( #3) on top of timer, replace timer.
*On high fire toggle power should be on both sides of yellow wire on timer. If none on bottom (#8)
check
R2 relay and open contacts. If no power on top, replace timer.
*Check MV connection at 2 stage gas valve for power (across MV and PV/MV) if power present
replace gas valve.
*Ensure you have unit hooked up properly for gas supply pressure (see Operating Instructions) and
sufficient minimum gas pressure.
9

10

DF 1500 Wiring Panel
1 Fenwal Ignition Module 60139A 8 Terminal Strip 60221
2 High Limit Switch 48110A 9 Air Tube w/Bracket 60222
3 Air Switch 48294 10 Timer Base 60822A
4 15 Amp Circuit Breaker 48216 11 30 Sec Timer 60822
5 3 Way Toggle Switch 48160 *12 2 Stage Thermostat 47301A
6 Green 120V Light 48006 13 Ignition Wire 50140A
7 Red 120V Light 48005 * Mounted on side of control box
1
2
3
10
11
9
13
8
4
5
5
67
11

DF 400 WIRING PANEL
1 Fenwal Ignition Module 60139A 8 Terminal Strip 60221
2 High Limit 48110A 9 Air tube w/bracket 60222
3 Air Switch 48294 10 Thermostat* 47301
4 15 Amp Circuit Breaker 48216 11 Ignition wire 50140
5 3 Way Toggle Switch 48160
6 Green 120V Light 48006
7 Red 120V Light 48005
1
3
2
4
5
67
8
9
11
* Mounted on exterior of control
box
12

Manifolds
DF 400
DF 1500
1 Conversion Valve 50271 5 10lbs regulator 50275A
2 3/4” shut off ball valve 50270
3 3/4” solenoid valve 50277A
4 RV53 Regulator 50274
1 1 1/4” conversion valve 70271 4 1 1/4” solenoid valve 50277B
2 1 1/4” shut off ball valve 70270 5 10 lbs regulator 60275
3 2 stage valve 80272A
3
2
1
4
5
54
12
3
13
A
B
B
A
IF GAS SUPPLY IS OVER ½ PSI (14” WATER COLUMN) CONNECT
TO UNION A ON MANIFOLD. IF GAS PRESSURE IS 1/2PSI OR LESS,
REMOVE THE 10LBS REGULATOR AND CONNECT TO UNION B.
IF GAS SUPPLY IS OVER ½ PSI (14” WATER COLUMN) CONNECT
TO UNION A ON MANIFOLD. IF GAS PRESSURE IS 1/2PSI OR LESS,
REMOVE THE 10LBS REGULATOR AND CONNECT TO UNION B.

DF-1500 WIRING SCHEMATIC
2STAGE
GAS VALVE
PV PV/MV MV
GAS VALVE
DELAY TIMER
SET @ 15SECONDS
5643
71 8
THERMOSTAT
HIGH FIRE
HIGH/THERMOSTAT
SWITCH
AIR PROVING
SWITCH
4
HIGH
LIMIT
THERMOSTAT
CONTACTS
20A
SERVICE
AUTO
MODE SELECTOR
SWITCH
3
MANUAL
OFF
SOLENIOD
VALVE
V2
IGNITION
CONTROLLER
V1
L1
GND
L2
BURNER
LIGHT
SPARK/FLAME
2
5
RED
RED
RED
YELLOW
RED
BLACK
BLACK
B
RR
YY
BLACK
YELLOW
BLUE
BLACK
WHITE
WHITE
BLACK
WHITE
MALE PLUG RECEPTACLE
115V-1Ø-60Hz
GREEN
BLACK
20AMP
CIRCUIT
BREAKER
BLUE
WHITE
BLACK 1
2
FLAME
FAILURE
LIGHT
NC
YELLOW WHITE
MOTOR
BLOWER
BLUE WHITE
B
WHITE
WHITE
WHITE
YELLOW
2
YELLOW
YELLOW
RED
14

BLOWER
2
AIR PROVING
SWITCH
HIGH
LIMIT
L1 L2
V1 V2
SOLENIOD
VALVE
IGNITION
CONTROLLER
GND
SPARK/FLAME
MOTOR
15AMP
CIRCUIT
BREAKER
MANUAL
AUTO
OFF
MODE SELECTOR
SWITCH
THERMOSTAT
CONTACTS
DF-400 WIRING SCHEMATIC
1
2
BLACK
WHITE
GREEN
3
4
15A
SERVICE
MALE PLUG RECEPTACLE
115V-1Ø-60Hz
5
BURNER
LIGHT
BLACKBLACK
RED
RED
RED BLUE
RED
YELLOW
RED
BLUE
BLUE
WHITE
WHITE
YELLOW
YELLOW
FLAME
FAILURE
LIGHT
YELLOW
NC
WHITE
WHITE
WHITE
15