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Operating Instructions and Owner’s Manual
Mr. Heater | Gas-Fired Low-Intensity Infrared Heater
BEFORE YOU BEGIN
Read this manual carefully before installing or servicing this
equipment. Improper installation, servicing or maintenance will
cause death, injury or property damage. Check the minimum
required safe distances from combustibles given on the outside
of each burner to make sure that the product is suitable for your
application. The minimum required safe distances from combustibles
is also found on page 9 of this manual. Installer must be a licensed
contractor of representative. After the installation is complete, check
product operation as provided in these instructions.
Unpacking the Heater
Manpower Requirements
To prevent personal injury and damage to the heater, two persons
will be required to remove the heater from the carton. Both ends of
the heater should be lifted from the carton at the same time. The
burner box should be lifted by gripping the bottom of the box. The
reflector end of the heater should be lifted using the rear moveable
hanger.
Safety
Thin sheet metal parts, such as the reflector portion of the heater
and the various venting components, have sharp edges. To prevent
injury, the use of work gloves is recommended. The use of gloves
will also prevent the transfer of body oils from the hands to the
surface of the reflector.
Vent Kit (F102840)
1. (2) 3' x 2' Pipe 26GA.
2. (1) 36' x 3' B-Vent
3. (1) Gas Vent Top 3'
4. (1) Adj. Wall Thimble
5. (1) Storm Collar
6. (1) 3' Elbow
7. (1) Adj. Roof Flashing
Section 1 INTRODUCTION
About The Heater
The MHT 45 is a factory-assembled, gas fired, low-intensity heating
system. The system has been designed for easy installation and will
provide years of economical operation and trouble-free service. Not
only is infrared heat efficient, it also provides the most comfortable
conditions in open areas, such as garages.
Gas-Fired means it uses clean-burning Natural or LP gas.
Low-Intensity means that the radiant surface of the heat exchanger
tube does not glow red. Instead, it operates at a lower temperature
(less than 1000 F) and radiates energy at a lower intensity per square
foot of radiating surface. The lower temperature and intensity
levels are within a range that is most effective in establishing and
maintaining personal comfort levels. An aluminum reflector directs
the radiant energy downward to the occupied area.
Radiant refers to the energy radiated by the tube heater. Because
the energy is in the form of infrared rays, it does not directly heat the
air. Instead, the rays heat objects such as the floor, cars, machines
and people. The warm objects, in turn, heat the air. These combined
features are the key to the exceptional comfort and fuel efficiency
provided by the tube heater.
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Available Accessories
561 HVACPro
Users Manual
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wall you should find parallel isothermal rows indicating the location of heat tubes below the surface.
Perpendicular to the outside wall, you should find rising and falling temperatures at equal distances. High
temperatures indicate you are scanning a heat tube beneath the floor surface, low falling temperatures
indicate a space between the heat tubes.
Remote For Heat 4 Less Heater
1.
Press
D
and then press
A
to select HI emissivity.
2.
Press
C
and then press
A
to select MIN.
3.
To locate radiant heat tubes in floor, temporarily elevate the loop temperature to create hotter spots
for identifying tubing runs.
4.
Before releasing trigger, press
A
to toggle between MIN, MAX, DIF floor temperatures and record
the temperatures for future comparison and trending under similar conditions.
Testing Radiant Heat Applications
1.
Operate radiant heat loop until steady state conditions are achieved.
2.
Attach the thermocouple to supply of radiant loop.
3.
Record the supply temperature.
4.
Attach thermocouple to return of radiant loop.
5.
Record the return temperature.
6.
Difference is Delta-T (temperature difference).
7.
Repeat for each loop to zone and balance for equal Delta-T’s.
Testing Water Heater Insulation
1.
Connect thermocouple probe to obtain ambient temperature near water heater.
2.
Press
D
and then press
A
to select HI emissivity for vinyl jacketed insulation or painted metal
jacketed water heaters.
3.
Press
C
and then press
A
to select DIF.
4.
Aim the Thermometer at the water heater.
5.
Scan the water heater jacket.
6.
Scan in horizontal rows from top to bottom
7.
Press
C
and then press
A
to read MAX and DIF jacket temperatures. Record your readings.
•
The closer the jacket temperature is to ambient temperature, the less jacket losses there are.
•
Heat For Less Space Heater
Standby losses account for a majority of the water heater energy expenses. Increase water
heater insulation to reduce standby losses.
•
Standby losses are losses when water is not being re-heated by the burners or the elements.
When the water heater is idle (standing by) and no water is being drawn, heat loss through the
jacket (and flue on oil/gas systems) are waste heat losses that can be reduced by increasing
insulation and/or lowering the temperature setting.
Testing Steam Traps
Steam traps open on low temperature to allow steam flow to trap. Steam traps close at steam temperatures
to stop steam flow. As steam temperature drops, traps open to allow more steam flow and to return
(“drain”) condensate.
•
If temperature is low in steam pipe, low in trap and low in condensate return, trap may be stuck
closed. If temperature is high in steam pipe, high in trap, and high in condensate return, trap may be
stuck open.
Heat For Less Heater
•
If temperature is high in steam pipe, high in trap, and slightly lower in condensate return, trap is
probably operating properly.