Mr. Heater MH125KTR Manuale Utente

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Mr. Heater, Inc.| Kerosene Forced Air Heater
Operating Instructions and Owner’s Manual
CAuTION: CSA certified for use with only No. 1-K kerosene fuel.
Model 
50KR 
75KTR 
125KTR 
175KTR 
210KTR
Burn Rate: 
50,000 Btu/hr (14.7 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: 
115V, 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 
110V 
110V 
110V 
110V
Pressure Setting: 
3.5 psig (24 kPa) 
4.2 psig (29 kPa) 
5.5 psig (38 kPa) 
5.8 psig (40 kPa) 
8.5 psig (58.6 kPa)
Max. Outlet Temperature:  1450
o
F (787
o
C) 
1450
o
F (787
o
C) 
1450
o
F (787
o
C) 
1450
o
F (787
o
C) 
1450
o
F (787
o
C)
Fuel Tank Capacity: 
4 gallons (15.1 L) 
6 gallons (22.7 L) 
8.45 gallons (32 L) 
13.5 gallons (51 L) 
13.5 gallons (51 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:
 
SPECIFICATIONS
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. CO can 
build up in a heated space and failure to provide adequate ventila-
tion could result in death. The symptoms of inadequate ventilation 
are:
• 
headache 
• 
dizziness
• 
burning eyes and nose 
• 
nausea
• 
dry mouth or sore throat
Be sure to follow advice about ventilation in the Safety Precautions 
section.
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 circum-
vented 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.  Recommended for use with No.1-K kerosene fuel. Factory 
tested for use with No.2-K kerosene, No.1 or No.2 Diesel, 
No.1 or No.2 fuel oil or JP8 Jet A fuel and these fuels may 
be used as well. Never use gasoline, oil drained from crank 
cases, naphtha, paint thinners, alcohol or any other highly 
flammable fuels.
2.   Check the heater thoroughly for damage. DO NOT operate a 
damaged heater.
3.  DO NOT modify the heater or operate a heater which has 
been modified from its original condition.
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.
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 combustible 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. (MH50KR & 
MH75KTR – 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 in operation.
15.  Use only in accordance with local, state (provincial) or 
national requirements, ordinances and codes.
OpERATING INSTRuCTIONS
UNPACKING
1.  Remove heater from carton.
2.  Remove all protective material which may have been applied 
to the heater for shipment.
3.  Check the heater for possible shipping damage. If any 
damage is found immediately contact the manufacturer at 
800-251-0001.
ASSEMBlY (For 125,000, 175,000 and 210,000 BTU/hr models 
only, see figure 1, page 8.)
Wheels 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” nut driver, 3/8” open or 
adjustable wrench and standard pliers.
1.  Assemble the wheels onto the wheel support as shown.
2.  Install one of the cotter pins into the hole on one end of 
axle.