Frost Fighter IHS 1500 Datasheet

MODEL IHS 1500
JULY 2014
TO PRESENT
Installation - Operation
Maintenance Instructions
and Parts List
READ INSTRUCTIONS PRIOR TO STARTING HEATERS
FROSTFROSTFROSTFROST
FROST FIGHTER INC.
100-1500 NOTRE DAME
WINNIPEG, MANITOBA
CANADA R3P 0E9
TEL : [phone]
FAX: [phone]
TOLL FREE: [phone]
WWW.FROST-FIGHTER.COM
GAS - FIRED CONSTRUCTION HEATER
PROPANE AND NATURAL GAS
JULY, 2014

FROSTFIGHTER WARRANTY
Frost Fighter Inc. 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 Frost Fighter Inc., nor any of its distributors or dealers, is
authorized to assume for Frost fighter Inc. 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 Frost Fighter Inc., 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. Frost Fighter Inc. 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:
STANDARD: ANSI Z83.7 - CSA 2.14
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.

2
WARNING Installation and adjustment of the burner requires technical knowledge and
the use of combustion test instruments. Do not tamper with the unit or controls. Call your
qualified service technician. Incorrect operation of the burner could result in severe
personal injury, death or substantial property damage.
Have your equipment inspected and adjusted annually by your qualified service technician
to assure continued proper operation.
Never store gasoline or combustible materials near the heating equipment. This could
result in explosion or fire, causing severe personal injury, death or substantial property
damage.
Never burn garbage or refuse in your heating appliance or try to light theWARNING
burner by tossing burning material into the appliance. This could result in severe personal
injury, death or substantial property damage.
Never restrict air openings on the burner or to the room in which the appliance is located.
This could result in fire hazard or flue gas leakage, causing severe personal injury, death
or substantial property damage.
To the owner-
The following will be used throughout this manual to bring attention to hazards and
their risk factors, or to special information.
Denotes presence of a hazard which, if ignored, will result in severe personalDANGER
injury, death or substantial property damage.
Denotes presence of a hazard, which, if ignored, could result in severeWARNING
personal injury, death or substantial property damage.
CAUTION Denotes presence of a hazard, which, if ignored, could result in minor
personal injury, or property damage.
NOTICE Intended to bring special attention to information, but not related to personal
injury or property damage.
HAZARD DEFINITIONS
INSTRUCTION MANUAL
INDIRECT FIRED CONSTRUCTION HEATER

GENERAL NOTES:
1. The heater is designed and approved for use as a construction heater under ANSI Z83.7-/
CSA 2.14-2011
2. Frost fighter Inc 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:
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).
ADDITIONAL INSTRUCTIONS FOR PROPANE GAS:
1. 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/or the National Standards of
Canada CAN/CGA B149.2 installation codes for propane gas.
2. The heater must be located more than ten (10) feet (3.05 meters) away from the propane source or
propane tank.
3. When the heater is not in use insure to shut off the gas supply from the propane source or propane
tank.
4. Disconnect the heater from the propane source or propane tank when storing the heater indoors.
5. Minimum tank size 400 lbs (350 litres)
6. Connect the tank to the unit using appropriately sized regulators to reduce the tank pressure to 11" w.c.
LIGHTING INSTRUCTIONS IHS 1500 (LPNG)
TO START HEATER
1) Securely attach the fuel line to the heater. Maximum fuel supply pressure is 14” W.C. Minimum
fuel supply pressure is 7” W.C. (natural gas) and 11” W.C. (propane).
2) Check the fuel conversion valve to ensure it is in the proper position. Refer to the label on the
heater for proper positioning.
3) Connect the electrical power supply. Refer to the heater rating plate for the required voltage.
4) Turn on the fuel and electrical supplies. Set the heater selector switch to manual or thermostat
and the heater should start.
5) If the heater does not start check for proper electrical and fuel supplies. Resent the burner
control
TO STOP THE HEATER
1) Turn the heater selector switch to off. The supply fan will continue to run to cool down the heat
exchanger.
2) To prevent damage to the heat exchanger do not disconnect the power supply until the supply
fan stops.
3

CONNECTING THE PROPANE TANK
1. The gas connection on the heater is 1 1/4” NPT. Ensure you have the proper fittings to connect
to the heater.
2. The maximum supply pressure to the heater is 14” W.C. (1/2 PISG).
3. Ensure the proper regulators are installed to reduce the tank pressure to 14”W.C. maximum
11”W.C. minimum.
4. Gas leakage test. Close the main manual valve on the heater and open all manual valves
upstream of the heater. Check all connections for leaks with soap solution. Forming of bubbles indicates
gas leakage. Retighten or replace connectors as required.
DISCONNECTING THE PROPANE TANKS
1. Close all fuel valve upstream of the heater including the valve at the tank.
2. Disconnect the fuel lines at the heater and the tank.
ADJUSTING THE INPUT RATE FOR NATURAL GAS AND PROPANE
Picture 1 shows the location of the manifold test port. The test port is 1/8” NPT. To adjust the manifold
pressure connect a pressure gauge (0-14” W.C.) to the test port and bring the heater to high fire. Adjust
the gas pressure at the RV-81 regulator (See Picture 2) so the gauge reads the pressure recorded on the
rating plate.
4
Picture 1
Picture 2
1/8” NPT
Test Port
RV-81 Regulator

Remove the front cover from the Ah4 two stage actuator and fire the heater on low fire. Adjust the low fire
cam until the reading on the ague is the same as the figure recorded on the rating plate. See picture 3
and 4.
Maximum supply pressure is 14” W.C. and minimum supply pressure is 7” W.C. The supply pressure is
checked at the 1/8” NPT test port on the first elbow of the pilot manifold.
When properly adjusted the flame will be blue with orange tips.
1. Remove the 1/8” test plug from the first pipe elbo upstream of the burnewr.
2. Connect a manometer, magnehelic or other device capable of measuring gas pressure.
Minium measuring rage is 0 to 14” W.C.
3. Start the heater and with the burner firing adjust the main RV-81 regulator so the device in #2 above
reads the same pressure as the manifold pressure indicated on the heater rating plate.
INSTALLATION INSTRUCTIONS:
1. The installation shall conform with local codes, or, in the absence of local codes, with the National Fuel
Gas Code, ANSI Z223.1/NFPA 54, or the National Gas and Propane Installation Code, CSA B149.1.
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, five square feet (0.47 square meters) must be provided to
allow free entry of the air required for operation.
5. Do not operate the unit in partly ventilated areas without a flue pipe connected to the unit.
6. Do not operate the unit in close proximity to combustible surfaces, materials, gasoline, and other
flammable vapours and liquids.
7. After installation, check the manifold assembly for gas leaks by applying a water and soap solution to
each connection.
8. The heater must be installed on level ground.
9. Minimum gas supply pressure is 7" W.C. (natural gas) or 11” W.C. (propane). Maximum gas supply
pressure is 14" W.C.
5
Picture 3 Picture 4
Low Fire
Adjustment Screw

GAS LEAKAGE TESTING
After removal for service or replacing components on the gas manifold a gas leakage test must
be performed.
1. Close main gas firing valve on the gas manifold.
2. Connect your source gas to the gas manifold.
3. Once connections are tightened, open source gas, fire 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 burner is running, redo the soap test to insure gas fittings are tight.
8. Fix any leaks found.
PRE-INSTALLATION CHECKLIST
LEVELING THE HEATER
- Ensure the surface the heater is to be placed on does not slope more than 5 degrees in any direction.
- If the surface slopes more than 5 degrees either level the surface or place supports under the heater
base frame ot ensure the heater is level.
COMBUSTION AIR SUPPLY
The burner requires combustion air and ventilation air for reliable operation. Assure that the
Building and/or combustion air openings comply with National Fuel Gas Code NFPA 54/CSA B149. For
appliance/burner units in confined spaces, the room must have an air opening near the top of the room
plus one near the floor, each with a free area at least one square inch per 1000 Btu/hr input of all fuel
burning equipment in the room. For other conditions, refer to NFPA 31 (CSA B1139-M91 in Canada).
If there is a risk of the space being under negative pressure or of exhaust fans or other devices depleting
available air for combustion and ventilation, the appliance/burner should be installed in an isolated room
provided with outside combustion air.
CLEARANCES
The unit must be installed with minimum clearances of 16 inches on the sides, 12 inches from the top of
the unit, 16 inches from the flue (venting), 48” from the front, 0” from the floor, 48” from ductwork and 36
inches from the burner access side. The unit must be installed on a level floor.
DUCT INSTALLATION
- Duct diameter is 20 inches
- Use belt cuff ducting. Slide the cuff overtop of the duct inlet/outlet and tighten with the belt.
- The top two duct connections are for cold air or return air in the heater.
- The heater is approved use with or without ducting.
- Maximum duct length is 100 feed per supply opening. If return air ducting is used the length of
the return air duct must be subtracted form the allowable supply ducting length (i.e. if the return
air duct length is 30 feet the maximum supply duct length is reduced to 70 feet).
- Ducts should be rated for 300 F. minimum.
6

VENT SYSTEM
The flue gas venting system must be in good condition and must comply with all the applicable codes.
OUTDOOR INSTALLATIONS:
For outdoor installation a vent cap must be installed and fastened.
INDOOR INSTALLATIONS:
Must be done in accordance to NFPA 54 (or CSA B149) with local authorities having jurisdictions.
1. The flue must be securely attached to the unit with tight joints.
2. The flue must not be sized to have a cross-sectional area less then that of the flue
collar at the unit.
· 3. Other appliances must not be connected so as to vent through the vent of this unit.
· 4. Do not use 90-degree tees or elbows greater than 45 degrees, (UNLESS NOTED).
· 5. Do not support the weight of the stack on the flue connection of the heating system.
· 6. The maximum flue gas temperature is 650 F. “A” vent, or single wall steel pipe must
be used.
· 7. Minimize connecting pipe length and the number of bends by locating the unit as close
to the flue pipe as possible.
· 8. Maintain clearances between the flue pipe and combustible materials that are
acceptable to the Federal, Provincial and local authorities having jurisdiction.
· 9. Unit must be connected to a flue having sufficient draft to ensure proper operation of
unit.
VERTICALLY VENTED UNITS
1. Maximize the height of the vertical run of
vent pipe. A minimum of five (5) feet
(1.5m) of vertical pipe is required. The top
of the vent must extend at least two (2)
feet (0.61m) above highest point on the
roof. A weatherproof vent cap must be
installed to the vent termination.
2. Horizontal runs must not exceed 75% of
the vertical height of the vent pipe, up to a
maximum of ten (10) feet (3m). Horizontal
runs should be pitched upward ¼” per foot
(21 mm) and should be supported at 3
foot (1m) maximum intervals.
3. Design vent pipe to minimize the use of
elbows. Each 90 is equivalent to 5 feet
(1.5m) of straight vent pipe run.
4. Vent pipe should not be run through
unheated spaces. If such runs cannot be
avoided, insulate vent pipe to prevent
condensation inside vent pipe. Insulation
should be a minimum of ½” (12.7mm)
thick foil faced fibreglass, minimum 1 ½#
density.
5. Dampers must not be used in vent piping
runs. Spillage of flue gases into the
occupied space could result.
6. Vent pressure must be negative.
7. The vent must be terminated vertically.
7

.
8
Rise ratio
1/4" per foot
Vent Diameter: 12"
Material: Single wall steel pipe or type A vent
Vent installations shall conform with local codes, or,
in the absence of local codes, with the National
Fuel Gas Code, ANSI Z223.1/NFPA 54, or the National
Gas and Propane installation Code, CSA B149.1
90 Degree elbow
90 Degree elbow
Straight section
3' Minimum
25' Maximum
IHS 1500
HORIZONTAL FLUE VENTING
3' Minimum

ELECTRICAL SUPPLY
Verify that the power connections available are correct for the Unit. All power must be supplied
through the disconnect.
INSTALLING THE OPTIONAL THERMOSTAT
Plug the thermostat directly into the receptacle. WARNING: THE RECEPTACLE IS USED FOR
INSTALLING THE THERMOSTAT ONLY! THIS IS NOT A POWER SOURCE.
PREPARE THE BURNER FOR START-UP
Start-up checklist – Verify the following before attempting to start burner
o Combustion air supply and venting have been inspected and verified to be free of
obstruction and installed in accordance with all applicable codes.
o Fuel connection to nozzle line assembly is secure.
o Fuel supply line is correctly installed, the oil tank is sufficiently filled, and shut-off valves
are open.
START THE BURNER
WARNING Do not proceed unless all prior steps in this manual have been completed. Failure to
comply could result in severe personal injury, death or substantial property damage.
MAINTENANCE AND SERVICE
WARNING
Operation and adjustment of the burner requires technical knowledge and the use of
combustion test instruments. Do not tamper with the burner or controls. Failure to
comply could result in failure or the burner or system, resulting in severe personal injury,
death or substantial property damage.
ANNUAL SERVICE
Have the burner inspected; tested and started at least annually by a qualified service
technician. This annual test/inspection should include at least the following:
o Clean burner and blower wheel (to remove lint and debris).
o Test ignition and combustion and verify air damper settings.
o Test fuel lines and all connections
o Inspect combustion air and vent systems.
o Oil motor (if not permanently lubricated).
MONTHLY MAINTENANCE
o Observe combustion air openings and vent system for integrity. Openings must be clean
and free of obstructions.
o Check the fuel lines and fittings to verify there are no leaks.
o Observe burner ignition and performance to verify smooth operation.
o Shut the system down if you observe abnormal or questionable operation. Call a
qualified service agency for professional inspection and service.
o Grease the main supply blower bearings.
9

CLEANING THE HEAT EXCHANGER
To clean the secondary of heat exchanger remove the clean out panel located above the burner. This
gives you access to the heat exchanger. Remove the exchanger panel and flue baffles. With a brush
clean out the secondary walls. When re-installing the exchanger panel replace the gasket and re-apply
high temperature silicone rated to 800F. To clean out the main drum, remove the burner and with a brush
clean the sides of the drum. To re-install the burner replace the gasket and insure the burner inserts into
the exchanger 3 ¾ inches. Run the unit at full fire.
SEQUENCE OF OPERATION
1. SYSTEM SWITCH “MANUAL” HEAT SWITCH “LOW FIRE”
After a ninety second purge period, the burner fires on low fire. Thirty seconds after the burner fires the
supply fan starts. when the call for heat from the thermostat is satisfied the burner shuts down and after a
three minute cool down period the supply fan shuts down.
2. SYSTEM SWITCH “MANUAL” HEAT SWITCH “HIGH FIRE”
After a ninety second purge period, the burner fires on high fire. Thirty seconds after the burner fires the
supply fan starts. When the call for heat from the thermostat is satisfied the burner shuts down and after a
three minute cool down period the supply fan shuts down.
3. SYSTEM SWITCH “THERMOSTAT” (the Heat Switch is inoperative in this mode)
On a call for first stage heat from the thermostat, after a ninety second purge period, the burner fires on
low fire. Thirty seconds after the burner fires the supply fan starts. On a call for second stage heat from
the thermostat the burner goes to high fire. When the call for heat from the thermostat is satisfied the
burner and supply fan shut down.
4. SYSTEM SWITCH “OFF”
The heater is inoperative.
NOTES:
- When the “VENTILATION SWITCH” is in the “ON” position the supply fan will run continuously.
- When the system switch is turned off the supply fan will continue to run for three minutes to cool down
the heat exchanger
- Do not shut down the heater by disconnecting the power supply to the heater as this could damage the
heater. To shut down the heater turn the SYSTEM SWITCH to the “OFF” position and wait for the three
minute cool down cycle to complete before disconnecting the power supply.
10

POSITIONING OF THE IGNITION ELECTRODE FOR STRAIGHT GAS
BURNERS USING A FLAT DIFFUSER PLATE.
IGNITION ELECTRODE:
The ignition electrode is positioned as shown, with the horizontal part of the electrode flush with
the diffuser plate. Leaving a gap of 1/16” to 1/8” wide. The pointing direction of the electrode is
as shown, but is not critical.
FLAME SENSOR:
The flame sensor is a rectification – or flame rod.
11

BEARING INSTALLATION AND MAINTENANCE
NOTE: To prevent premature failure – please ensure greasing instructions below are applied. As well,
tighten bearing set screws, collars, and wheel lugs every four to six months.
ENGINEERING – BALL & ROLLER BEARINGS LUBRICATION
For bearings that are equipped with a hydraulic grease fitting threaded into the housing for ease of
lubrication, the proper amount of lubricant in the bearing is important. Both excessive and inadequate
lubrication may cause failure. The bearings should be re-lubricated while they are rotating (if it is safe to
do so); the grease should be pumped in slowly until a slight bead forms around the seals. The bead in
addition to acting as an indicator of adequate re-lubrication provides additional protection against the
entry of foreign matter and helps flush out contaminates in the bearing.
By the time the slight bead is formed, it will be noticed that the bearing temperature will rise. It is not
uncommon for the temperature to rise as much as 30 degrees Fahrenheit after re-lubrication. If
necessary to re-lubricate while the bearing is idle, refer to the recommended re-lubrication grease chart
tables on the following page for various sizes of the bearings.
LUBRICANT-STANDARD BEARINGS:
All bearing units are pre-lubricated at the factory with a lithium soap grease which is compatible with
multi-purpose grease readily available from local suppliers. The lubricant selected for factory lubrication
uses a highly refined mineral oil with a high viscosity index, thickened with lithium soap to conform to
NLGI grade 2 consistency. A suitable additive package is added to protect the highly polished rolling
contact surfaces from corrosion and oxidation of the lubricant. The lubricant is satisfactory for an
operating temperature range of –30 F to +250 F.
Select standard industrial grade greases that conform to the following specification for optimum bearing
performance:
General Duty Ball & Roller;
58-75 SUS @ 210 F
450-750 SUS @ 100 F
Premium Duty Ball & Roller;
68-75 SUS @ 210 F
600-750 SUS @ 100 F
Heavy Duty Roller Bearing;
82 SUS @ 210 F
886 SUS @ 100 F
NOTE: For heavy loaded roller bearing applications, grease with EP additives are often recommended
for optimum performance.
12

TABLE I. RECOMMENDED LUBRICATION
Frequency of re-lubrication depends upon operating conditions. The bearing operating temperature is the
best index for determining a re-lubrication schedule. The following chart gives the frequency of re-lubrication
based upon continuous operation for various operating temperatures and can be used as a satisfactory guide
for determining when bearings should be re-lubricated.
TABLE II. LUBRICATION FREQUENCY
Ball Bearings
Roller Bearings
Shaft Size
(inches)
Grease Charge
(ounces)
Shaft Size
(inches)
Grease Charge
(ounces)
1 – 1 ½ 0.15 1 – ½ to 1 – 1 1/16 0.32
Speed
Temperature
Cleanliness
Greasing Interval
100 RPM Up to 120 F Clean 5 months
500 RPM Up to 130 F Clean 2 months
1000 RPM Up to 210 F Clean 2 weeks
1500 RPM Over 150 F Clean Weekly
Any speed Up to 150 F Dirty 1 week to 1 month
Any speed Over 150 F Dirty Daily to 1 week
Any speed Any temperature Very dirty Daily to 1 week
Any speed Any temperature Extreme conditions Daily to 1 week
13

TENSIONING V-BELT DRIVES
1. Ideal tension is the lowest tension at which the belt will not slip under peak load conditions.
2. Check tension frequently during the first 24-48 hours of operation.
3. Over-tensioning shortens the belt and bearing life.
4. Keep belts free from foreign material that may cause slip.
5. Make V-drive inspection on a periodic basis. Tension when slipping. Never apply belt dressing
as this will damage the belt and cause early failure.
Check and tighten belt tension. The following procedure is recommended for tightening belts:
a) Measure span “X” shown in Figure A.
b) At the center of span length “X”, apply a force perpendicular to the span and large enough to deflect
belt 1/64” for each inch of span length. Example- the required deflection for a 40” span would be
40/64” or 5/8”.
c) Compare the force applied with the values given in Table III. If force is between the minimum and
maximum range shown, the drive tension should be satisfactory. A force below the minimum value
indicates an under tightened belt and force that exceeds the maximum value indicates an over
tightened belt.
CLDÜw9 !
FORCE
SPANLENGTHX
PER INCH OF SPAN
DEFLECTION 1/64"
14
TABLE III
BELT
CROSS
SECTION
(Marked on Belt)
MOTOR PULLEY
PITCH
DIAMETER
DEFLECTION FORCE
MINIMUM MAXIMUM
B 4.4” – 5.6” 4.0 lbs. 5.87 lbs.

TROUBLE SHOOTING GUIDE
The equipment has been electrically and fire tested prior to shipment. However, during transit,
misadjustment of controls and loose wires could develop. Do not assume a control is defective until it and
its associated wiring is checked.
This equipment has many items supplied to us by outside vendors. This manual is accompanied by
information sheets on most of these items which should be referred to for detailed service information.
The following is an obvious list of items that could cause field problems; however, it does not cover all
problems encountered and is meant to be used as a guide only.
1. BURNER MOTOR FAILS TO RUN, CONTROL RELAY DOES NOT FUNCTION:
A. Blown fuses. Main disconnect open.
B. Control relay off on flame failure. Push reset button on control.
C. Thermostat or duct stat not calling for start-up. Defective control.
D. Loose wire or low voltage.
E. Motor overcurrent protector tripped in open position or defective.
F. Controls in limit circuit defective or tripped in open position.
G. Control transformer defective.
2. BURNER MOTOR RUNS, NO IGNITION OR MAIN FLAME. PRIMARY RELAY WILL NOT INDICATE
FLAME FAILURE.
A. Burner motor running backwards.
B. Misadjusted or defective burner air switch.
3. BURNER MOTOR RUNS, NO IGNITION OR MAIN FLAME. PRIMARY RELAY LOCKS OUT ON
FLAME FAILURE.
A. Fuel valve manually closed.
B. Ignition transformer or pilot defective. Defective or improperly gapped ignition electrodes.
Cracked porcelain.
4. BURNER MOTOR RUNS, IGNITION AND MAIN FLAME. MAIN FAN MOTOR FAILS TO OPERATE.
A. Fan timer not set properly or defective.
B. Blown fan fuses.
C. Motor overcurrent protector tripped open or defective.
5. INSUFFICIENT HEAT BEING DISCHARGED INTO AREA:
A. Main fan blowers running backwards.
B. High limit switch defective.
C. Field mounted thermostat and/or duct stats improperly wired.
15

BURNER STARTING DIFFICULTIES AND THEIR CAUSES:
1. The burner goes to lockout after the prepurge period because the flame does not ignite.
a. Air has not been fully evacuated from the gas lines.
b. The gas valve is passing too little gas.
c. The ignition spark is irregular or not present.
d. The gas valve is defective.
2. The burner does not start when there is a call for heat.
a. The air pressure switch has failed.
b. There is no gas, or insufficient pressure in the supply lines to activate the optional gas
pressure switch (if used).
c. There is a blown fuse.
d. The burner has gone off on safety.
e. The low voltage contacts or the low voltage relay are defective.
3. The burner goes through prepurge, ignition is established, the burner fires for 2 seconds, then goes to
lockout.
a. The flame rectification rod (flame rod) has shorted to ground or is defective.
b. Polarity is reversed or the earth ground is not properly connected.
c. The ionization current is weak (lower than 2 micro-amps).
OWNER INFORMATION AND ROUTINE MAINTENANCE
SAFETY LOCKOUT
This burner is equipped with multiple interlocking safety devices. In the event of a failure in the flame, or
any blockage of the combustion air supply, the burner will “lock out” in a safety condition. In such an
event, an illuminated red button will show on the flame safeguard.
To restart the burner, press the button once only. Should the burner return to the lock out condition, call a
qualified service technician or your gas company for assistance. In the case of loss of pressure in the gas
supply line, the burner will go off on safety. If supplied with an optional gas pressure switch (or field
installed), the burner will simply switch off on low gas pressure, and start up again when the gas pressure
returns to normal.
NOTE: Keep the area around the burner free and clear of all combustible materials, gasoline and other
flammable vapours and liquids. Do not allow any obstructions, which may prevent the free, flow of air to
the burner.
MAINTENANCE
Like all precision equipment, your burner will require periodic maintenance. At an interval of 2 months,
you should:
1. If your furnace has an observation port, visually check the flame.
2. Check and clean the air intake louver to remove any buildup of fluff, dust, pet hair, etc.
Once a year, you should have the burner checked as indicated below, by your local authorized dealer.
1. Check burner distributor head and mixing plates. Clean if necessary.
2. Check ignition electrode. Clean, adjust or replace as necessary.
3. Check the flame sensor rod (ionization rod) for dirt or carbon build up. Clean, adjust, or replace
as necessary.
4. Check manifold gas pressure.
5. Check all burner adjustments.
6. Generally clean all exposed parts and components.
7. Repeat combustion tests.
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LINKAGE ADJUSTMENT:
Starting linkage settings should be:
Air damper arm travel: 3 5/8"
Actuator arm: 1st hole
High fire damper setting: 2.5
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3 5/8"

LINKAGE ADJUSTMENT:
HIGH/LOW CONTROL
Start the burner. In high fire, take a meter reading and if necessary, readjust the outlet pressure of the
regulator. Now check the excess air and readjust the damper position by readjusting the linkage rod. Mark
the damper position on the quadrant. In low fire position, take a meter reading and readjust the low fire
position on the actuator (see attached manufacturers instructions). Check the excess air. If damper needs
readjustment in low fire, go back to high fire and readjust the position of the ball joint connector. Again,
towards the shaft means more closed in low fire position and away from the shaft means more open n low
fire position. Check high fire and low fire positions again and adjust low fire stop.
In some cases these air-setting needs to be adjusted. To do this insert your flue gas analyzer into the
flue, 6 inches above the top of unit. Measure you excess O2% and CO2% levels. Set your air shutter to
bring your O2% levels between 4-5%. Your Co2% will be between 9-10% and your CO levels should be
around zero. If a Bacharach smoke tester is used the smoke reading should be 1.
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