Enerco MH175KT, HS75KT, HS50KT, MH125KT, HS175KT User Manual
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OPERATING INSTRUCTIONS AND OWNER’S MANUAL
READ INSTRUCTIONS CAREFULLY: Read
MR. HEATER
MODEL
MH50KT, MH75KT,
MH125KT, MH175KT,
MH210KT
and follow all instructions. Place instructions
in a safe place for future reference. Do not
allow anyone who has not read these instructions to assemble, light, adjust or
operate the heater.
HEATSTAR
MODEL
HS50KT, HS75KT,
HS125KT, HS175KT,
HS210KT
KEROSENE
FORCED-AIR HEATER
WARNING: If the information in this manual is not followed exactly, a fire or
explosion may result causing property damage, personal injury or loss of life.
—Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this
or any other appliance.
—Service must be performed by a qualified service agency.
This is an unvented portable heater. It uses air (oxygen) from the area in which it is used.
Adequate combustion and ventilation air must be provided. Refer to page 3.
UL-733, &CSA/CAN3-B140.9.3
ENERCO GROUP, INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 • 216-916-3000
04/05 70276 Rev. A
WARNING:YOUR SAFETY IS IMPORT ANT
TO YOU AND TO OTHERS, SO PLEASE READ
THESE INSTRUCTIONS BEFORE YOU
OPERA TE THIS HEATER.
GENERAL HAZARD W ARNING:
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 UNDERST AND AND
FOLLOW THE INSTRUCTIONS SHOULD USE
OR SERVICE THIS HEATER.
IF YOU NEED ASSISTANCE OR HEATER
INFORMATION SUCH AS AN INSTRUCTIONS
MANUAL, LABELS, ETC. CONTACT THE MANUFACTURER.
W ARNING: NOT FOR HOME OR
RECREA TIONAL VEHICLE USE
W ARNING: FIRE, BURN, INHALATION,
AND EXPLOSION HAZARD. KEEP SOLID
COMBUSTIBLES, SUCH AS BUILDING
MA TERIALS, PAPER OR CARDBOARD, A SAFE
DIST ANCE AW A Y FROM THE HEA TER 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.
The State of California requires the following warning:
WARNING:COMBUSTION BY-PRODUCTS
PRODUCED WHEN USING THIS PRODUCT
CONT AIN CARBON MONOXIDE, A CHEMICAL
KNOWN TO THE ST ATE OF CALIFORNIA TO
CAUSE CANCER AND BIRTH DEFECTS (OR
OTHER REPRODUCTIVE HARM).
W ARNING:
• DO NOT USE GASOLINE, NAPHTHA OR
VOLATILE FUELS.
• STOP HEATER BEFORE ADDING FUELS.
• ALWAYS FILL OUTDOORS AWAY FROM OPEN
FLAME
• DO NOT USE EXTERNAL FUEL SOURCE.
• DO NOT OPERATE HEATER WHERE
FLAMMABLE LIQUIDS OR V APORS MAY BE
PRESENT.
• DO NOT START HEATER WHEN CHAMBER IS
HOT
• DO NOT START HEATER WHEN EXCESS
FUEL HAS ACCUMULATED IN THE CHAMBER.
• DO NOT PLACE COOKING UTENSILS ON TOP
OF THE HEATER.
• PLUG ELECTRICAL CORD INTO A PROPERLY
GROUNDED THREE-PRONG RECEPTACLE.
50K & 75KT WARNING:
Not suitable for use on wood floors or other
combustible materials. When used the heater
should rest on a suitable insulating material at
least 1 inch thick and extending 3 feet or more
beyond the heater in all directions.
Enerco Group, Inc. | Kerosene Forced Air Heater Operating Instructions and Owner’ s Manual
CONTENTS
WARNINGS .......................................................................... 2
HEATER SPECIFICATIONS................................................. 3
OPERA TING PRECAUTIONS.............................................. 3
SAFETY PRECAUTIONS ..................................................... 3
OPERA TING INSTRUCTIONS............................................. 4
MAINTENANCE, STORAGE AND SERVICE....................... 5
WIRING DIAGRAM............................................................... 6
PARTS LIST.......................................................................... 6
EXPLODED VIEW ................................................................ 7
WARRANTY ......................................................................... 8
INSTRUCTIONS FOR ORDERING P ARTS......................... 8
2
SPECIFICATIONS
Type of Fuel: For use with Kerosene or #1 Fuel Oil ONLY on ALL models.
Model 50K 75KT 125KT 175KT 210KT
Burn Rate: 50,000 Btu/hr (22 kW) 75,000 Btu/hr (22 kW) 125,000 Btu/hr (37 kW) 175,000 Btu/hr (51 kW) 210,000 Btu/hr (61.5 kW)
Fuel Rate: 0.37 gal/hr (1.4 L/hr) 0.55 gal/hr (2.1 L/hr) 0.96 gal./hr (3.5 L/hr) 1.3 gal/hr (5.0 L/hr) 1.6 gal/hr (6.0 L/hr)
Electrical Input: 1 15V, 60Hz, 3.5a 115V, 60Hz, 4a 115V, 60Hz, 5.5a 115V, 60Hz, 5.5a 115V, 60Hz, 5.5a
Line Protection: 10 amps 10 amps 20 amps 20 amps 20 amps
Min. Operating Voltage: 110V 110 V 110 V 1 10V 110 V
Pressure Setting: 3.5 psig (24 kPa) 4.2 psig (29 kPa) 5.0 psig (34 kPa) 5.8 p sig (40 kPa) 8.5 psig (58.6 kPa)
Max. Outlet T emperature: 1300oF (704oC) 1300oF (704oC) 1300oF (704oC) 1300oF (704oC) 1300oF (704oC)
Fuel T ank Capacity: 4 gallons (15.1 L) 6 gallons (22.7 L) 14 gallons (53 L) 14 gallons (53 L) 14 gallons (53 L)
Ignition: Direct Spark, Continuous Direct Spark, Continuous Direct Spark, Continuous Direct Spark, Continuous Direct Spark, Continuous
Spark Generator: Igniter 13 kV, 10ma Igniter 13 kV, 10ma Igniter 13 kV , 10ma Igniter 13 kV, 10ma Igniter 13 kV, 10ma
Primary Safety Control: Solid State Control Solid State Control Solid State Control Solid State Control Solid State Control
Certification:
OPERATING PRECAUTIONS
This is a kerosene, direct-fired, forced air heater. It's intended
use is primarily temporary heating of buildings under construction, alteration or repair.
Direct-Fired means that all of the combustion products enter
the heated space. Even though this heater operates very
close to 100 percent combustion efficiency, it still produces
small amounts of carbon monoxide. Carbon monoxide (called
CO) is toxic. We can tolerate small amounts but not a lot. CO
can build up in a heated space and failure to provide adequate ventilation could result in death. The symptoms of
inadequate ventilation are:
• headache
• dizziness
• burning eyes and nose
• nausea
• dry mouth or sore throat
So, be sure to follow advice about ventilation in these
operating instructions.
Forced Air means that a blower or fan pushes the air through
the heater. Proper combustion depends upon this air flow;
therefore, the heater must not be revised, modified or
operated with parts removed or missing. Likewise, safety
systems must not be circumvented or modified in order to
operate the heater.
When the heater is to be operated in the presence of other
people the user is responsible for properly acquainting those
present with the safety precautions and instructions, and of
the hazards involved.
SAFETY PRECAUTIONS
1. Check the heater thoroughly for damage. DO NOT
operate a damaged heater.
2. DO NOT modify the heater or operate a heater which
has been modified from its original condition.
3. Use only Kerosene. Never use gasoline, naphtha,
paint thinner, alcohol or other fuels of any kind.
4. For indoor use only. Not for use where exposed to
weather.
5. Use in well ventilated areas, provide at least 2 sq. ft.
(0.19 sq. m.) of opening near the floor and 2 sq. ft.
(0.19 sq. m.) near the ceiling directly to outdoors.
Increase air openings as marked for each additional
heater.
Enerco Group, Inc. | Kerosene Forced Air Heater Operating Instructions and Owner’ s Manual
6. Always keep combustibles, like paper and wood at
least 8 ft. (2.4 m) from the heater outlet and 3 ft. (1.0 m)
from the top, sides and inlet. Locate 10 ft. (3.0 m) from
canvas or plastic coverings and secure them to prevent
flapping movement.
7. Caution: Due to the high surface and exhaust
temperatures, adults and children must observe
clearances to avoid burns or clothing ignition. Do Not
Touch. Keep Children, Clothing, and Combustibles
away.
8. Install the heater such that it is not directly exposed to
water spray, rain and / or water.
9. Never use in areas normally for habitation and /or
where children may be present.
10. Operate only on a stable, level surface. (MH50K &
MH75KT – See wood floor warning).
11. Do not use with duct work. Do not restrict inlet or exit.
12. Use only with electrical power specified. The electrical
connection and grounding must comply with National
Electrical Code – ANSI/NFPA 70 (USA) and CSA C22.1
Canadian Electrical Code, Part 1 (Canada).
13. Use only a properly grounded 3-prong receptacle or
extension cord.
14. Do not move, handle, or service while hot or burning.
15. Use only in accordance with local, state (provincial) or
National requirements, ordinances and codes.
OPERATING INSTRUCTIONS
UNPACKING
1. Remove all protective material which may have been
applied to the heater for shipment.
2. Remove heater from carton.
3. Check the heater for possible shipping damage. If any
damage is found immediately notify the dealer from
whom you purchased the heater.
ASSEMBLY (For 125,000, 175,000 and 210,000 BTU/hr
models only)
Wheel and handles are found in the shipping carton along
with mounting hardware. The wheels, axle and mounting
hardware are in a package. Tools required are a 5/16"
nutdriver, 3/8" open or adjustable wrench and standard pliers.
1. Assemble the wheels onto the wheel support frame as
follows:
a.Install one of the cotter pins into the hole on one end
of axle.
b.Slide the large washer, then wheel onto the axle next
to the cotter pin.
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04/05 70276 Rev. A
c.Slide a small washer, spacer, small washer onto the
axle next to the wheel.
d.Slide the partially assembled axle through the wheel
support frame.
e.Slide the small washer, spacer, and small washer onto
the axle next to the wheel support.
f. Slide the wheel then large washer onto the axle and
hold in place with the remaining cotter pin.
g.Install the caps over the larger washers to finish the
wheel assembly.
2. Position the heater on the wheel support frame
assembly with the exit end over the wheels.
3. Use eight screws and nuts to attach the handles to the
top of the tank flange. The screws will go through the
handles, tank flange and wheel support frame. Install
the nuts and finger tight only until all nuts are installed.
4. Tighten all the nuts.
5. Attach cord caddies to handles using No. (14) & No. (5)
screws and nuts.
Handle assembly for 125KT, 175KT& 210KT only.
PREPARING FOR OPERATION
1. Check the heater for possible shipping damage. If any
is found, immediately notify the factory.
2. Follow all of the "Precautions".
3. Fill the fuel tank with clean kerosene. In extremely cold
weather, condensation may develop in the tank and it is
recommended that a tablespoon of de-icer be added
for each gallon (4 liters) of fuel in the tank. When filling
the heater, use at least 2 gallons (8 liters) of fuel. Be
sure heater is level and do not overfill. Use a funnel or
can with a long fill spout.
IMPORTANT: Before filling fuel tank the first time or after
extended storage periods, drain the fuel tank of any
moisture or condensation.
4. Locate heater at a safe distance from combustible
materials. Models 50K & 75KT is not suitable for use on
wood floors or other combustible materials. When
used, the heater should rest on suitable insulating
material at least 1 inch thick and extending 3 ft. or more
beyond the heater in all directions.
ST ART
1. 50K: Plug the heater into a grounded 115V, 60 Hz, 1 Ø
outlet.
75KT, 125KT, 175KT & 210KT:
lowest setting, make sure “On/Off” switch is “Off”. Plug
the heater into a grounded 115V, 60 Hz, 1 Ø outlet.
Turn thermostat to highest setting. Start heater by
push toggle switch to “On” position (light signifies
switch is in “ON” position). Adjust thermostat to
desired setting. Heater will cycle on/off as heat is
required.
For all models: In cold weather, starting may be improved by
holding a finger over the end of the pressure adjusting screw
until the heater starts. This unit is equipped with an interrupt
circuit. The reset is located near the power cord. If the unit
does not start, press the reset button.
Turn thermostat to
ITEM P ART NO. DESCRIPTION QTY
1 24338 Handle, Front 1
2 24338 Handle,Rear 1
3 24339 Wheel Support Frame 1
4 26977 Machine Screw Blk (long) 8
5 26037 Kep Nut Blk 12
6 28746 Axle 1
7 28752 Wheel (8’’ Dia.) 2
7 22110 Wheel (13’’ Dia. 210KT only) 2
8 28751 Cap 2
9 28748 Spacer 2
10 28747 Washer, Small 4
11 28749 Washer, Large 2
12 28750 Cotter Pin 2
13 28754 Ext. Cord Caddy 2
14 27336 Machine Screw Blk (Small) 4
Enerco Group, Inc. | Kerosene Forced Air Heater Operating Instructions and Owner’ s Manual
STOP
1. 50K: Unplug heater from power source.
75KT, 125KT, 175KT & 210KT: Push “On/Off”
switch to “Off” position. For extended shutdown,
unplug heater from power source.
REST ART AFTER SAFETY SHUTDOWN (50K, 75KT,
125KT, 175KT & 210KT)
1. Wait 5 minutes.
2. Press reset button.
4
MAINTENANCE AND STORAGE
WARNING. To prevent personal injury, unplug the
heater from the wall outlet before servicing.
For maximum efficiency and trouble-free service,
make the following periodic maintenance, cleaning
and inspections.
DAILY SCHEDULE
1. GENERAL. Make general visual inspection of heater for
loose or damaged parts. Check nuts and bolts to insure
against looseness caused by vibration or rough
handling. Damaged parts should be repaired or
replaced before using heater again. Check heater
operation to be sure it is operating normally (See
"Servicing" section for description of normal operation).
2. FILTERS. Dirty air or fuel filters will cause an imbalance
in the air-fuel mixture. The best indication that this
condition exists is an increase in odors or difficulty
getting your heater to ignite. This heater should never
be operated without the filters in place. If required,
clean filters as described under "500 Hours" and
"Annual Schedules".
500 HOUR SCHEDULE
1. AIR INTAKE FILTER. Remove and wash the filter
element with a mild detergent, dry thoroughly and
replace. Do not oil the filter element. If your heater is
used where there is considerable dust or dirt, clean as
often as necessary (approximately every 50 hrs.).
2. REMOVE DUST. Clean heater twice a season (more
often under dusty conditions). Remove accumulated
dust from the transformer, burner, motor and fan blades
with compressed air. Wipe area clean with a clean dry
cloth. Inspect area to insure all foreign materials are
removed, especially around the burner and combustion
area.
3. CAD CELL. Clean the glass portion of the cad cell with
a soft dry cloth.
4. NOZZLE. Accumulation of dirt from fuel and carbon
from the compressor vanes will eventually fill up the
passages in the nozzle, resulting in reduction of fuel
and air flow. Pressure will gradually increase giving
improper fuel-air mixture and excess odor and smoke.
If this occurs, replace the fuel nozzle.
5. FUEL TANK. Clean twice a season (during frequently
used periods, clean twice a month). Drain and flush the
fuel tank with clean fuel oil.
ANNUAL SCHEDULE
1. AIR OUTPUT FILTER. Remove the air output filter and
tap the contaminated side gently on a solid object to
remove contaminates. Compressed air or liquids
should not be used to clean this filter. Reinstall cleaned
filter in filter body in the same position as it was when
removed. If the filter appears extremely dirty, replace it
with a new filter of the same type. When replacing the
filter cover, be sure the gasket is firmly in place and the
screws in the filter cover are tight to prevent air leaks.
2. FUEL FILTER. Remove the fuel filter from fuel line and
direct compressed air through the filter in the opposite
direction of fuel flow. Safety glasses should be worn
when using compressed air.
3. AIR AND FUEL LINES. If the air or fuel lines are
removed during cleaning, be sure all connections are
tight before operating unit.
4. AIR PRESSURE SETTING. The air pressure has been
properly set at the factory. If the air pressure is out of
adjustment, it will most likely be caused by dirty air
filters, a partially plugged nozzle, an air leak in the
system or improperly set pressure. If adjustment
becomes necessary, first determine the proper
pressure setting for your heater which is printed on the
serial label located on the fuel tank. Remove the plug
from the air filter cover and attach an accurate pressure
gauge calibrated to a maximum reading of 15 PSI. Start
the heater and note the pressure reading. If the
pressure is low, slowly turn the pressure adjusting
screw in (Clockwise) until the correct pressure is
obtained. If the air pressure is high, turn the adjusting
screw out (counterclockwise) until the pressure is
correct. When correct pressure is reached, unplug the
heater, remove the gauge and replace the plug.
STORAGE
Store the heater in a dry location free from fumes or dust.
At the end of each heating season, clean the heater as
described in the MAINTENANCE section. Drain and flush the
fuel tank with clean fuel. The manufacturer recommends
completely filling the tank with fuel for extended storage to
minimize condensation inside the tank.
SERVICING
A hazardous condition may result if a heater is used that
has been modified or is not functioning properly. When
the heater is working properly:
* The flame is contained within the heater.
* The flame is essentially yellow.
* There is no strong disagreeable odor, eye burning or
other physical discomfort.
* There is no smoke or soot internal or external to the
heater.
* There are no unplanned or unexplained shut downs of
the heater.
DIAGNOSTIC FLAME CONTROL:
This heater is eqiupped with a diagnostic control board and
flashing LED error indicator. This flashing LED signals when
there is a Malfunction of a monitored component. See the
following diagnostic Guide for error signal and a brief
description of the error:
LED UNIT OPERA TION
Show Flash ........ System lockout-High temp limit or rollout
........................... switch open
2 Flashes .......... System lockout-flame exist before motor
.......................... starting
4 Flashes ........... System lockout-motor no normal operation
5 Flashes ........... System lockout-RESET KEY error
6 Flashes ........... System lockout-failled to detect flame
Steady Off .......... Waiting or normal operation
Steady On .......... Ignition control failure
Enerco Group, Inc. | Kerosene Forced Air Heater Operating Instructions and Owner’ s Manual
5
04/05 70276 Rev. A
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