Munters MIR 85 WU Manual

Operating, Installation
and Service Instructions
Direct- and Indirect-fired
Diesel/Kerosene Heaters
TOR 67 WU
TOR 115 WU
TOR 175 WU
MIR 37 WU
MIR 55 WU
MIR 85 WU
TOR
MIR

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1. GENERAL SAFETY RULES
•READ INSTRUCTIONS CAREFULLY. READ 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.
•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.
•SERVICE MUST BE PERFORMED BY A QUALIFIED SERVICE AGENCY.
•UNVENTED PORTABLE HEATERS USE AIR (OXYGEN) FROM THE AREA IN
WHICH IT IS USED. ADEQUATE COMBUSTION AND VENTILATION AIR MUST BE
PROVIDED. REFER TO INSTRUCTIONS.
WARNING
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS
IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE.
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
COMBUSTION BY-PRODUCTS PRODUCED WHEN USING THIS PRODUCT CONTAIN
CARBON MONOXIDE, A CHEMICAL KNOWN TO THE STATE OF CALIFORNIA
TO CAUSE CANCER AND BIRTH DEFECTS (OR OTHER REPRODUCTIVE HARM).
GENERAL HAZARD WARNING
FAILURE TO COMPLY WITH THE PRECAUTIONS AND INSTRUCTIONS PROVIDED
WITH THIS HEATER, CAN RESULT IN DEATH, SERIOUS BODILY IN URY 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
NOT FOR HOME OR RECREATIONAL VEHICLE USE
WARNING
YOUR SAFETY IS IMPORTANT TO YOU AND TO OTHERS,
SO PLEASE READ THESE INSTRUCTIONS BEFORE YOU OPERATE THIS HEATER

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•THE ELECTRICAL SYSTEM TO WHICH THE APPLIANCE IS CONNECTED MUST COMPLY
WITH ALL SAFETY REGULATIONS IN FORCE. A RESIDUAL CURRENT CIRCUIT BREAKER MUST
BE PROVIDED ON THE MAIN DISTRIBUTION BOARD.
•UNPLUG THE HEATER BEFORE ATTEMPTING ANY SERVICE OR MAINTENANCE.
•ALWAYS CHECK THE POWER SUPPLY CABLE BEFORE USE. IT MUST NOT BE BENT,
CRUSHED, OR ANYWAY DAMAGED.
•THE POWER SUPPLY CABLE MUST BE REPLACED ONLY BY QUALIFIED PERSONNEL.
•ONLY USE AN ORIGINAL POWER CABLE WITH A 3-PIN GROUNDED PLUG.
•DO NOT TOUCH THE EXHAUST GAS OUTLET. DANGER OF BURNS!
2. PRODUCT DESCRIPTION
•Mobile space heater with:
closed combustion chamber and gas exhaust duct (indirect-fired models)
open combustion chamber (direct-fired models)
3. TECHNICAL SPECIFICATIONS
3.1 Indirect-fired heaters
Model # MIR 37 WU MIR 55 WU MIR 85 WU
Firing rate (BTU/hr) 125,200 180,900 288,700
Air Flow Rate (ft³/min) 1180 1470 2650
Fuel Types Diesel / Kerosene / #1-2 Fuel Oil
Fuel Consumption (gal/hr) 0.88 1.28 2.04
Fuel Nozzle 0.65 60°H 1.00 60° H 1.50 80° W
Efficiency (%) 87.1 87.1 88.5
Noise Level at 2m (dB(A)) 75 73 73
Voltage (V) 115V 60Hz 1ph
Electrical Power (W) 460 460 800
Current Rating (A) 7.0 7.0 12.5
Weight (lb) 154 178 282
Lenght (in) 47 54.8 68.0
Width (in) 24 27.6 29.5
Height (in) 31 32.7 40.4
Flue Diameter (in) 6 6 6
Tank Capacity (gal) 14 26.5 36.0
Fuel Pressure (psi) 175 175 175
Air Lock Setting 1 2 3.5
3.2 Direct-fired heaters
Model # TOR 67 WU TOR 115 WU TOR 175 WU
Firing rate (BTU/hr) 227,000 396,500 607,000
Air Flow Rate (ft³/min) 1650 2825 3240
Fuel Types Diesel/Kerosene/ #1-2 Fuel Oil
Fuel Consumption (gal/hr) 1.60 2.80 4.28
Fuel Nozzle 1.25 60°S 2.25 80°W 3.50 80°S
Efficiency (%) 100 100 100
Noise Level at 2m (dB(A)) 73 73 76
Voltage (V) 115V 60Hz 1ph
Electrical Power (W) 460 800 1100
Current Rating (A) 7 12.5 17.5
Weight (lb) 142 223 264
Lenght (in) 55.3 66.1 76.3
Width (in) 24.4 27.2 29.6
Height (in) 29.5 35.4 40.8
Tank Capacity (gal) 14 26 36
Fuel Pressure (psi) 175 175 175
Air Lock Setting 1.5 3.5 9.0

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4. INSTALLATION INSTRUCTIONS
4.1. General instructions
•THE INSTALLATION OF THE EQUIPMENT SHALL BE IN ACCORDANCE WITH THE
REGULATION OF AUTHORITIES HAVING URISDICTION AND CSA B139.
•The heater must be operated only by properly trained personnel. The manufacturer’s instructions must be
followed.
•The heater must be installed and operated so that people are not exposed to dangers deriving from exhaust
gases, from the hot air flow and in such a way that no fire risks exist.
•It is forbidden to install the heater in the surroundings of flammable materials, combustible products, or in
explosive atmospheres.
•When an i direct-fired heater connected to a flue pipe is used in a closed room, provide a minimum
opening area of 1 ft³ per US gallon capacity at the unit level.
•When a direct-fired heater - or an i direct-fired heater ot connected to a flue pipe - is used in a closed
room, provide a minimum opening area of 3 ft
2
per US gallon capacity at the unit level and a continuous, natural
air circulation through windows and doors.
•For the use of the heater the general and special fire safety regulations in force in all fields of applications
must be followed. In any case the following minimum safety clearances from flammable materials or objects in
the surroundings of the heater must be ensured:
Sides: 2 ft (610 mm) Air inlet : 2 ft (610 mm)
Top: 5 ft (1520 mm) Air outlet: 10 ft (3050 mm)
Flue pipe: 3 ft (915 mm)
•Floors and ceilings must be made of fireproof materials in the place where the heater is operated.
•The air inlet and outlet must never be blocked for any reason.
•Install the heater on a flat, level floor in a steady position.
•It is forbidden to connect direct-fired heaters to air ducts.
4.2 Assembling the heater
•Before operating the heater, assemble axle, wheels and lower support following the diagram below:

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Maintenance and checks
•Depending on the operational conditions, usually every year, the heater should be checked by qualified
personnel.
•Prior to start-up, the user must check for any evident non-compliance with rules of use, safety and
protection.
5. INSTRUCTIONS FOR USE
5.1 Start-up
•The heater is factory set for operation
without room thermostat.
•If operation with room (remote)
thermostat is desired, remove the socket
cover (Fig. 1 nr. 1) and insert the thermostat
plug into the socket.
• Fill the tank with fuel of proper type.
Fig.1
•Connect the supply plug to a 115V ~ 60 Hz single phase earthed socket. The green lamp indicates that the
heater is powered.
•WARNING: THE APPLIANCE MUST BE EARTHED
Correct I correct
•Indirect fired heaters: connect the heater to a
chimney or to a exhaust duct. To get a proper
draught (at least 0,1 mbar) in the chimney the
exhaust gas path must rise. Avoid any elbows
and bends in the first part of the exhaust ducts
for at least 3 m. For operation of heater in closed
rooms without flue refer to the instructions for
installation (par. 4)
•If a room (remote) thermostat is used, set
maximum temperature on it.
•Turn switch to position “ON”
•Set the desired temperature on room
thermostat.
5.2. Reset after lockout – Safety air pressure switch
•The heater is equipped with a Reset pushbutton. When the heater locks out, the red lamp on the pushbutton
(fig. 1 n°2) lights up. In this case push the Reset button (see also the par. “Troubleshooting”) to restart the
heater.
•The heater is also equipped with an air pressure switch that controls the airflow pressure and locks the
heater out in the event of unit overheating. If this occurs, detect and eliminate the cause of overheating before
using the heater again. Have the heater inspected by a qualified technician if required. See point above for
resetting.
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2
3
4

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5.3. Shut dow .
•Set switch to “OFF” to shut the flame off. The fan will go on rotating for 1 min 45 sec to cool the heater
down. The fan motor will automatically stop at the end of the aftercooling time, then the unit can be
disconnected from mains.
Never disconnect the supply plug to stop the heater while in operation
The big amount of heat produced could damage the components: allow cooling sequence to take place
6. MAINTENANCE
•Before carryi g out a y mai te a ce operatio , disco ect the power plug.
•Mai te a ce must be carried out by qualified perso el (see also par. 7)
•The appliance must be thoroughly cleaned once a year to ensure good combustion and long life.
•Clean periodically
the oil spraying nozzle and its filter;
the oil pump filter
the main fuel filter cartridge
the ignition electrodes
the fan blades
the inside of the appliance, using compressed air
the flame sensor with a mild detergent
•Periodically check cables and electrical connections.
•Check the oil filter and replace if necessary.
7. TROUBLESHOOTING
TROUBLE CAUSE SOLUTION
Heater does not start No power Check main distribution board and
power supply line
Faulty cable/connections Check/have cable replaced by a
qualified electrician
Burnt fuse
Room thermostat set too low
Check and replace if required
Set room thermostat on a higher
temperature
Room thermostat socket cap not
inserted
Insert cap into the thermostat socket
Heater in lock-out mode Reset
Dirty or faulty flame sensor Clean or replace Heater starts, flame ignites but then
heater locks out
Faulty burner control unit Contact service personnel
Clogged nozzle Clean or replace
Flame sensor receives an external light
signal during ignition sequence
Check for external lights (sun, lamps,
etc.)
Heater starts, flame does not ignite and
then heater locks out
Faulty burner control unit Contact service personnel
No fuel Fill tank
Ignition fault, dirty or incorrectly spaced
electrodes
Clean electrodes, contact service
personnel if required
Dirty or blocked nozzle Clean or replace
Clogged filters Clean or replace
Heater starts, but combustion is not
good
Leakes in fuel circuit Check and eventually replace
Oil pump provides low pressure Contact service personnel
Insufficient combustion air Wrong air lock setting
Insufficient ventilation air Contact service personnel
Heater stops as the air pressure switch
functions
The appliance has overheated
Faulty pressure switch
See par. 5.2.
Contact service personnel

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8. WIRING DIAGRAM
TOR 67 WU, TOR 115 WU
MIR 37 WU, MIR 55 WU, MIR 85 WU
TH
IN
FC
EV
M
black
green
green
black
white
PL
TR
white
EV TR M
LN
FR
TRcont.
FC PL TH IN PL
black black black
white
white
L
N
FR
SL
green
white
red
black 1
black 2 dk. blue
lt. blue
brown
M13 M17 M15
M9
M7
M11
M18
M16
M14
M12
M10
M8
M19M4
M3
M2M1M6M5
FS
21
3
13
2
Optional
PL
brown
black
PA
P
black brown
EV Fuel Solenoid Valve
TR Ignition Transformer
M Motor
SL Warning Lamp
PA Air Pressure Switch
FS Fuse
FC Flame Sensor
PL Reset Button
IN Switch
TH Remote Thermostat
FR Heated Filter
TOR 175 WU
TH
IN
FC
EV
M
black
green
green
black
white
PL
TR
white
EV TR M
LN
FR
TRcont.
FC PL TH IN PL
black black black
white
white
L
N
FR
SL
green
white
red
black
white white
white
black
M13 M17 M15
M9
M7
M11
M18
M16
M14
M12
M10
M8
M19M4
M3
M2M1M6M5
FS
21
3
1 3
2
Optional
PL
brown
black
black
white
black
R
PA
P
EV Fuel Solenoid Valve
TR Ignition Transformer
M Motor
SL Warning Lamp
PA Air Pressure Switch
FS Fuse
FC Flame Sensor
PL Reset Button
IN Switch
TH Remote Thermostat
FR Heated Filter
R Relay

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