MR. HEATER HEATSTAR
AND OWNER’S MANUAL
OPERATING INSTRUCTIONS
M
O
D
E
L
MHT 45
Read and follow all instructions. Place instructions in a safe place
for future reference. Do not allow anyone who has not read
instructions to assemble, light, adjust
these
READ INSTRUCTIONS CAREFULLY:
Gas-Fired, Low-Intensity Infrared Heaters
oved for residential Garage/Commercial Applications
appr
operate the heater.
or
M
O
D
E
L
HST45
WARNING:
injury or property damage. Refer to this manual. For assistance or additional
cause
in
formation consult a qualified installer, service agency or the gas supplier.
Improper installation, adjustment, alteration, service or maintenance can
— WHAT TO DO IF YOU SMELL GAS
• Open Windows
• DO NOT try to light any appliance.
• DO NOT use electrical switches.
• DO NOT use any telephone in your house. Immediately call your local gas supplier from a
neighbor’s
• Do not touch any electrical switch; do not use any phone in your building.
• Installation and service must be performed by a qualified installer, service agency or the gas
telephone. Follow the gas supplier’s instructions.
supplier.
• If you cannot reach your gas supplier, call the Fire Department.
FOR YOUR SAFETY:
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of
this or any other appliance.
WARNING: If the information in these instructions are not followed exactly, a fire or
explosion may result causing property damage, personal injury or loss of life.
rco Group, Inc., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 • 216-916-3000
Ene
01/05 Revision L1 #02853
WARNING:
YOUR SAFETY IS IMPORTANT TO YOU AND TO OTHERS,
SO
PLEASE READ THESE INSTRUCTIONS BEFORE YOU
OPERATE THIS HEATER.
L’AVERTISSEMENT:
Votre surete est importante a vous et donc s’il vous plait
re ces instructions avant d’operer cet appareil de
li
chauffage.
GENERAL HAZARD WARNING:
FAILURE TO COMPLY WITH THE PRECAUTIONS AND
INST
RUCTIONS 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
HEATER.
IF YOU NEED ASSISTANCE OR HEATER INFORMATION
SUCH
AS AN INSTRUCTIONS MANUAL, LABELS, ETC.
CONTACT THE MANUFACTURER.
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.
L’AVERTISSEMENT:
Le feu, les brulures, le danger d’inhalation et explosion
ga
rder combustibles solide tel que les materiels de
papier ou le carton.
Une distance sure eloigne de l’appareil chauffage
comme
Par les instructions, ne utiliser l’appareil de chauffage
dans les espaces qui forme contenir combustibles
volatiil ou aeroporte, ou les produit qu’essence, les
dissolvants, peindre plus mines, les particles de
poussiere ou les produits chimiques inconnus
recommande.
L’AVERTISSEMENT GENERAL DE DANGER:
L’Echec pour se conformer aux precautions et aux
instructions
avoir pour resultat la mort blessure et la perte de
propriete ou les dommages physiques serieuses du
danger de feu, l’explosion, la brulure l’asphyxie,
monoxide de carbone empoisonant, et/ou le choc
electrique.
Seulement les personnes qui peuvent comprendre et
peut suibre les instructions doivent utiliser ou doivent
entretenir cet appareil de chauffage.
Si vous avez besoin de l’information d’assistance ou
appa
les etiquettes,etc, contactez le fabricant
a fourni avec cet appareil de chauffage,
reil de chauffage telle qu’un manuel d’instruction,
CONTENTS
Section 1 INTRODUCTION ............................................................ 3
Section
2 PLANNING .................................................................... 6
Section
3 INSTALLATION .............................................................. 8
4 VENTING ...................................................................... 12
Section
Section
5 OPERATION ................................................................. 18
Section 6 MAINTENANC
Section
7 TROUBLESHOOTING .................................................... 20
Section
8 ILLUSTRATED PARTS .................................................... 22
WARRANTY .... ............................................................................ 24
INST
RUCTIONS FOR ORDERING PARTS ....................................... 24
E ............................................................ 19
WARNING:
The State of California requires the following 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).
L’AVERTISSEMENT:
L’etat de Californie exige les avertissement siuvants.
Derives de combustion ont produit en utilisant ce
produit contient monoxide de carbone, un chimique/gaz
connu dans l’etat de californie pour causer les defauts de
cancer et naissance (ou autre le mal reproducteur)
Enerco Group, Inc.,
| Gas-Fired Low-Intensity Infrared Heater Operating Instructions and Owner’s Manual
2
BEFORE YOU BEGIN
Available Accessories
Read this manual carefully before installing or servicing this
equipme
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
ap
co
be
compl
instructions
nt. Improper installation, servicing or maintenance will
plication. The minimum required safe distances from
mbustibles is also found on page 9 of this manual. Installer must
a licensed contractor of representative. After the installation is
ete, check product operation as provided in these
.
Unpacking the Heater
Manpower Requirements
To prevent personal injury and damage to the heater, two persons
be required to remove the heater from the carton. Both ends
will
of
the heater should be lifted from the carton at the same time.
burner box should be lifted by gripping the bottom of the box.
The
reflector end of the heater should be lifted using the rear
The
moveable hanger.
Safety
Thin sheet metal parts, such as the reflector portion of the heater
the various venting components, have sharp edges. To prevent
and
inju
ry, the use of work gloves is recommended. The use of gloves
also prevent the transfer of body oils from the hands to the
will
rface of the reflector.
su
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
1
3
4
5
2
6
7
Section 1 INTRODUCTION
About The Heater
The MHT/HST 45 is a factory-assembled, gas fired, low-intensity heating
The system has been designed for easy installation and will
system.
years of economical operation and trouble-free service. Not
provide
is infrared heat efficient, it also provides the most comfortable
only
conditions
Gas-Fire
Low-Intensity means that the radiant surface of the heat
exchanger tube does not glow red. Instead, it operates at a lower
tempe
intensity per square foot of radiating surface. The lower
tempe
effective in establishing and maintaining personal comfort levels.
aluminum reflector directs the radiant energy downward to the
An
occupied
Radian
the
r. Instead, the rays heat objects such as the floor, cars, machines
ai
and
features are the key to the exceptional comfort and fuel efficiency
provided by the tube heater.
in open areas, such as garages.
d means it uses clean-burning Natural or LP gas.
rature (less than 1000 F) and radiates energy at a lower
rature and intensity levels are within a range that is most
area.
t refers to the energy radiated by the tube heater. Because
energy is in the form of infrared rays, it does not directly heat the
people. The warm objects, in turn, heat the air. These combined
Enerco Group, Inc.,
Operating Instructions and Owner’s Manual | Gas-Fired Low-Intensity Infrared Heater
3
About The Heater
Burner Box
Front Fixed Hanger
Reflector
Exhaust Vent
He
at Exchanger
Intake Vent
1/2" NPT
Power Cord
- Rear View -
Rear Movable Hanger
Co
ntrol Side
Access
Burner Box Contains the electrical components (i.e. blower motor, power transformer, etc.) and gas distribution components
gas valve, etc.) that make the heater work. There are no owner serviceable items contained in this box.
(i.e.
Front Fixed Hanger Provides rigid support and mounting surface for the reflector. Holes are provided in the upper corners of the
bulkhead
Reflector The reflector is made from formed aluminum and reflects the radiant energy downward to the space to be
he
Heat Exchanger A U-shaped tube through which the heated products of combustion pass.
Rear Movable Hanger Provides support for the heat exchanger and reflector at the end that is furthest from the burner box. The
suppo
Service Door To be removed only by a licensed contractor. Removal of this service door provides access to the electrical and
gas
Intake Vent Accomondates a 3" diameter combustion air inlet duct that delivers fresh air to the burner.
Exh
aust Vent Accomondates the air-venting duct that carries the products of combustion to be vented outdoors.
Nipple
– ½ NPT Point at which the gas supply is connected to the heater.
Power Cord Includes a three prong plug that must be connected to a dedicated and properly grounded three prong ceiling
outl
to accommodate suspension hardware required for installation of the heater.
ated.
rt may be moved (within limits) to accommodate hanging of the unit.
distribution components.
et.
Enerco Group, Inc.,| Gas-Fired Low-Intensity Infrared Heater Operating Instructions and Owner’s Manual
4
Technical Specifications:
1/2"
11
Burner Box
1" Max.
Length
Suspension Points
Reflector
He
at
Exchanger
1/2
13
"
9"
Model
MH
T- 45 45,000 96 lbs. 10’
HST- 45 45,000 96
HEATER SPECIFICATIONS
Electrical
Rating: 120VAC, 60Hz, single phase, 1 amp
Connection:
Gas
Inlet Connection
Connection
Gas
Inlet Pressure
minimum inlet gas supply pressure for the purpose of input
The
adjustme
Natural Gas:
Mini
Maximum
LP
Gas (propane):
Minimum
Maximum
Mani
fold Pressure
Natural Gas: 4.0” w.c.
LP
Gas (propane): 10.0” w.c.
3 pin molded plug
½” Male NPT
nt.
mum - Inlet 5.0” w.c.
- Inlet 10.5” w.c.
- Inlet 11.0” w.c.
– Inlet 13.0” w.c.
- Side View -
Leading Particulars
No. BTU/hr Weight Length
. 10’
lbs
VENTING SPECIFICATIONS
Vent/Flue
Length – 25 feet (Maximum)
5 feet (Minimum)
Fl
ue Pipe – 3.0” diameter
Vent Pipe – 3” diameter
- End View -
Enerco Group, Inc.,
Operating Instructions and Owner’s Manual | Gas-Fired Low-Intensity Infrared Heater
5
Where can the heater be installed?
The MHT/HST tube heater is intended for installation in the following
:
areas
• Residential applications, such as:
Section 2 PLANNING
Genera
This section provides the following information:
l
— garages
— greenhouses
— workshops
• Light industrial/commercial applications, such as:
— entranceways
— lobby areas
— Lunch rooms
— aircraft hangars (see Section 2 for restrictions)
— public garages ( see Section 2 for restrictions)
Where can’t the heater be installed?
The MHT / HST tube heater is not intended for installation in the
following
areas:
• Residential living or sleeping areas
• Basements
Installer’s responsibility
The MHT/HST tube heater , as well as the gas and electrical supply, and
venting of the heater must be installed in accordance with
the
applicable
qualified
Building
Use
codes
rnish all needed materials that are not furnished as standard
fu
equipment.
materials
workmanlike
codes
man
specifications and codes. Only firms (or individuals) well
in this type of work should install the system. Consult local
Inspectors, Fire Marshals for further guidance.
the information given in this manual together with the cited
and regulations to perform the installation. The installer must
It is also the installer’s responsibility to see that the
and installation methods used, result in a job that is
in appearance and is in compliance with all applicable
and requirements to this manual. The installer must give this
ual to the owner.
• Defines the gas, electric and venting requirements for the
MHT /HST tube
heater.
• Specifies the national standards and applicable codes that
apply to the gas, electric and venting requirements.
• Specifies the national standards and applicable codes that
apply
to non-residential installations.
Gas Service Requirements:
System Requirements
Inlet Connection
Connection:
Inlet
Pressure
Natural Gas:
Minimum - Inlet 5.0” w.c.
Maximum – Inlet 10.5” w.c.
LP
Gas (propane):
Minimum
Maximum
Manifold
Natural Gas: 4.0” w.c.
LP
Gas (propane): 10.0” w.c.
½” Male NPT
– Inlet 10.5” w.c.
– Inlet 13.0” w.c.
Pressure
Type of Gas
The type of gas appearing on the nameplate must be the type of
used. Installation must comply with local codes and
gas
recommendations of the local gas company. United States: Refer to
National Fuel Gas Code, ANSI Z223.1 – latest revision, (same as
PA Bulletin 54). Canada: Refer to Can 1-B149.1: Installation
NF
for Gas Burning Appliances.
Codes
Gas Supply Lines
The size of the gas supply lines must comply with local codes and
recommendations of the local gas company. United States: Refer to
National Fuel Gas Code, ANSI Z223.1 – latest revision, (same as
PA Bulletin 54). Canada: Refer to CAN 1-B149.1: Installation
NF
for Gas Burning Appliances.
Codes
A 1/8” NPT plugged tap must be installed in the gas line
connection
from the gas supply meter. The tap is required for checking system
pressure.
gas
immediately upstream of the heater that is farthest
Meter and Service
Meter and service must be large enough to handle all the heaters
installed plus any other connected load. The gas line which
being
feeds the system must be large enough to supply the required gas
a maximum pressure drop of ½” w.c. When gas piping is not
with
included
help
| Gas-Fired Low-Intensity Infrar ed Heater Operating Instructions and Owner’s Manual
Enerco Group, Inc.,
6
in the layout drawing, the local gas supplier will usually
in planning the gas piping.
Electrical Service Requirements:
System Requirements
The MHT/HST tube heater requires a grounded three-prong electrical
et to be installed within 18 inches of the rear surface of the
outl
burner box. It is recommended that the outlet for the
heater’s
heater
be ceiling-mounted and should be on a dedicated circuit. DO
NOT use an electrical extension cord to operate the heater.
ATTENTION
ue de monoxyde de carbone
Risq
L echappement du radiateur doit s’effectuer a l’exterieur.
Utillisez le materiel fourni.
Le non-respect de ces consignes peut entrainer mort ou
blessures.
Venting Codes
Heater Rating: 120 VAC, 60 Hz, Single Phase, 1 Amp
WARNING
Electrical
Shock Hazard
Plug heater into grounded three-prong ceiling receptacle.
Do not cut or remove the grounding prong from this plug.
Do not use with an extension cord.
Failure to follow these instructions will result in death or
electrical shock.
ATTENTION
Risq
ue d’electrocution
Brancher le cordon du radiateur sur un socie a 3 broches
et a la masse, situe au plafond.
Ne pas sectionner ou retirer la broche de masse de cette
prise.
N’utilliser aucun cable de rallonge.
Le non-respect de ces consignes peut entrainer mort ou
electrocution.
Grounding
The heater must be electrically grounded in accordance with the
following codes: United States: Refer to National Electrical Code
I/NFPA-70 – latest revision. Wiring must conform to the most
ANS
rent National Electrical Code and local ordinances. Canada:
cur
Refer to Canadian Electrical Code, CSA C22.1 Part 1 – latest
revision.
The location, size, installation and termination of vents, as well as
the minimum required safe distances when penetrating
combustible
recommendations of the local gas company. United States: Refer
to
National Fuel Gas Code, ANSI Z223.1 – latest revision, (same as
PA Bulletin 54). Canada: Refer to Can 1-B149.1 : Installation
NF
es for Gas Burning Appliance.
Cod
walls, must comply with local codes and
Non-residential Installations:
Aircraft Hangars
The MHT / HST tube heater may be used in certain areas of aircraft
hangars.
the
Hangars,
Stan
He
minimum
enclosu
hanga
to
from the floor).
In
he
He
sub
objects
Whe
combustibles
combustible
Installation in aircraft hangars must be in accordance with
following codes: United States: Refer to Standard for Aircraft
ANSI/NFPA-409 – latest revision. Canada: Refer to
dard CGA B149-1M91.
aters in aircraft storage or service areas must be installed a
of 10 feet above the upper surface of wings or engine
res of the highest aircraft which may be housed in the
r. (This should be measured from the bottom of the heater
the top of the wing, or engine enclosure, whichever is highest
other sections of aircraft hangars, such as shops or office,
aters must be installed a minimum of 8 feet above the floor.
aters installed in aircraft hangars shall be located so as not to be
ject to damage by aircraft, cranes, movable scaffolding or other
.
n installed over hoists, the minimum required safe distances to
must be maintained from the uppermost point of the
materials placed on the hoist.
Venting Requirements:
System Requirements
The MHT / HST tube heater must be installed with venting or with one of
optional venting kits available from Enerco. DO NOT connect this
the
ater to a separate chimney. Gas appliances must not be connected
he
a chimney flue serving a seperate solid-fuel burning appliance. DO
to
T common vent with any other fuel burning appliance.
NO
Maximum Length: 25 feet
Minimum
WARNING
Carbon
Monoxide Hazard
Heater must be exhausted outside.
Use materials supplied.
Failure to follow these instructions will result in death or
injury.
Length: 5 feet
Enerco Group, Inc.,
Public Garages
The MHT / HST tube heater may be used in public garages. Installation in
garages must be in accordance with the following codes:
public
States: Standard for Parking Structures NFPA-88A – Latest
United
revision, or the Standard for Repair Garages, NFPA-88B – latest
revision. Canada: Refer to Can 1-B149.1: Installation Codes for Gas
Appliances.
Burning
He
aters must be installed a minimum of eight feet above the floor.
Minimum required safe distances to combustibles must be
ntained from vehicles parked below the heater.
mai
Whe
n installed over hoists, the minimum required safe distances to
combustible
combustible
must be maintained from the uppermost point of the
materials placed on the hoist.
Hazardous Locations
Where there is the possibility of exposure to combustible airborne
material or vapor, consult the local Fire Marshal, the Fire Insurance
or other authorities for approval of the proposed
Carrier
installation
7
Operating Instructions and Owner’s Manual | Gas-Fired Low-Intensity Infrared Heater
.
Section 3 INSTALLATION
Installation Materials
WARNING
Several steps are involved in the installation of the heater.
DO NOT attempt to operate the heater until ALL steps of
the installation have been accomplished. Failure to follow
this warning will cause death, injury or property damage.
ATTENTION
Plusi
eur étapes sont impliquées dans l’installation de
l’appareil de chauffrage. PAS la tentative pour opérer
l’appareil chauffrage jusqu’à ce que TOUTES étapes de
l’installation ont été accomplies. L’echec pour suivre cet
avertissement causera la mort, les dommages de blessure
ou propriété.
Safety Equipment
Use of the following safety equipment is recommended for
installation
of the MHT / HST tube heater:
• Work gloves
• Safety glasses
Installation Tools
Tools required for the installation of the MHT / HST tube heater include
at a minimum
• Tape measure
• Electric drill (with an assortment of drill bits)
• Pipe wrenches – 2 required
• Screwdriver
• Tin snips
• Hacksaw
• Wire strippers
• Staple gun
• Level
• Pliers
the following:
Materials required for the installation of the MHT / HST tube heater include
a minimum the following:
at
• High temperature silicone sealant
• Suspension hooks (capable of supporting 150 pounds
each)
• Sheetmetal screws
The following items may be required for your particular installation:
• Plastic drain hose
• Additional vent pipe
• Roof flashing
• Rain collar
• Chain – 2/0, or equivalent
• S-hooks (as required)
Choose Location for Heater
When selecting a suitable mounting location for the MHT /HST tube
it is important to consider the following:
heater
1. The heater must meet the minimum mounting height
requirement of 7 feet above the floor. For aircraft hangars and
garages, the heater must meet the minimum mounting
public
heig
ht requirement of 8 feet above the floor.
2. The proposed mounting location allows for the minimum
required safe distances from combustibles (combustibles
clude vehicles, wood gasoline and flammable objects, liquids
in
vapors)
and
3. The proposed mounting location of the heater will not restrict
motion of passageway doors or windows.
4. The proposed location will not interfere with operation of the
overhead garage door.
5. The proposed location will provide the best coverage of the
total area to be heated.
6. The proposed location must provide for adequate combustion
d ventilation air.
an
7. The proposed location must provide for adequate accessibility
rance for service and proper operation.
clea
8. Consideration be given to the types of vehicles that will be
parked in the garage (cars, vans, boats, RV’s etc.).
9. The proposed location will allow for the minimum required
fe distances from combustibles with respect to the vehicles
sa
ked in the garage.
par
10. The proposed location will allow the required utilities (i.e.: gas
electric) and venting to be installed (maximum vent length
and
25 feet).
is
11. Sufficient clearances will exist to allow for maintenance.
12. Overhead structural members (rafters, beams, etc.) are
accessible for attaching the heater.
13. Location must allow for adequate clearance around air
openings into the combustion chamber.
Enerco Group, Inc.,
| Gas-Fired Low-Intensity Infrar ed Heater Operating Instructions and Owner’s Manual
8
General Guidelines (Residential)
Regardless of the venting arrangement that will be connected to the
ater, the following general guidelines for venting must be
he
followed:
1. The installation must conform with local codes or in the absence of
codes with the National Fuel Gas Codes, ANSI Z223.1/NFPA
local
54,
Natural Gas and Propane Installation Code, CSA BI49.1 for
.
Canada
2. Appliance input ratings are based on sea level operation and need
not be changed for operating up to 2,000 feet (609.9m) elevation.
For operation at elevations above 2,000 feet (609.9m)
manu
factured to specified deration condition for Canada and the
States.
United
3. The appliance and its appliance main gas valve must be
disconnected
pressure testing of that system at test pressures in excess of ½
(3.5kPa.).
psi.
The appliance must be isolated from the gas piping system by
closing
supply piping system at test pressures equal to or less than
gas
½ psi. (3.5kPa.).
(WARNING) Materials and items, when stored under this heater,
will
be subjected to radiant heat and could be seriously
damaged.
4. All horizontal venting sections must slope away from the heater
at a rate of ¼” per foot.
5. The total length of vent pipe (horizontal and vertical runs
mbined, plus the length of the exterior termination) must not
co
exceed 25 feet, and must not be less than 5 feet.
6. The vent terminal, mounted outside of the building, should not
be
located above walkways. Condensate produced during
ration of the heater could drip onto the walkway and could
ope
form ice during cold weather.
7. Be sure that the venting installation is in accordance with all
applicable
compa
8. DO NOT connect this heater to a separate chimney, and DO
NOT common vent with any other fuel burning appliance. Gas
appliances
rate solid-fuel burning appliance.
sepe
9. Maintain a minimum of 1-inch clearance from combustibles
around all vent pipes.
10. Seal all vent pipe connections with high temperature silicone
nt and secure each connection with three sheetmetal
seala
rews.
sc
from the gas supply piping system during any
equipment shutoff valve during pressure testing of the
local codes and recommendations of the local gas
ny.
must not be connected to a chimney flue serving a
It is important to keep the minimum required safe distances from
combustibles
damage. Clearances from vehicles parked beneath heaters must be
ntained. Signs should be posted to identify any possible
mai
viol
ation of the clearance distances form the heater in the vehicle
areas. Maximum allowable stacking height in storage areas should
identified with signs or appropriate markings. The illustrations
be
and
Table on the adjoining page specify the minimum required safe
distances
at all times to avoid death, personal injury or property
from combustibles.
Horizontal Installations
A
B
C
F
B
Note: Dimension “C” indicates the minimum required safe
distances from combustibles, it DOES NOT indicate
the required mounting height. The minimum mounting height is 7 feet, except for aircraft hangars and
public
garages.
45° Tilted Installations
24" Min
Approx. 45°
D
A
G
F
Minimum Required Safe Distances from
Combustible
In all situations, the minimum required safe distances from
combustibles
may catch on fire and include many common items such as wood,
r, rubber, fabrics, etc. Combustible materials such as those
pape
noted, and any other combustible materials must not be placed
r to any base or side of the MHT /HST tube heater than the
close
distances note
any questions
combustibles,
r, Enerco representative or distributor, of Enerco Technical
installe
Products
Friday, 8:15 a.m. to 4:45 p.m., Eastern Time.
during normal business hours which are Monday through
Telephone: (800) 251-0001 or (216) 916-3000
s
must be maintained. Combustibles are materials which
d in the diagrams on the following page. If you have
about the minimum required safe distances from
or the associated diagrams, please contact your
Enerco Group, Inc.,
Note: Dimension “E” indicates the
required safe distances
ate the required mounting
ht. The minimum mounting
ht is 7 feet, except for aircraft
and public garages.
MINIMUM REQUIRED SAFE DISTANCES
5,00
0 5" 24" 54" 38" 36" 6" 4"
9
minimum
from combustibles, it DOES NOT
indic
heig
heig
hangars
Mode
l BTU/Hr A B C D E F G
MHT-
45 45,000 5" 24" 54" 38" 36" 6" 4"
HST- 45 4
Operating Instructions and Owner’s Manual | Gas-Fired Low-Intensity Infrared Heater
E
Hang the Heater
Residential garages come in a variety of sizes, shapes, styles and
methods of construction. Because of all these variables, it is not
possible
he
overhead
other structural configurations are also illustrated below.
In
sh
residential applications it may not be necessary to lower the heater.
Instead,
un
of
hook
rear movable hanger.
Which
suspension
of
to include mounting hardware with the MHT / HST
ater. Although wooden rafters and joists are the most common
structural members in residential garage applications,
the typical suspension methods shown below, lengths of chain are
own as a means of lowering the heater. However, for most
it may be possible to screw hook-type hardware into the
derside of a beam. The exposed hook could directly engage one
the two mounting holes in the front fixed hanger, while another
could engage in one of the three suspension loops of the
ever method of suspension is selected, the two required
points must be capable of supporting a minimum
150 pounds each.
Horizontal Installation
1. Using S-hooks, attach two equal lengths of 2/0 chain, or
valent, to the two uppermost holes in the front fixed
equi
r.
hange
Slip the free end of both chains onto another S-hook, as shown.
2.
3. The uppermost S-hook can now be installed on the suspension
hard
ware that you have installed for suspension of the unit. An
additional
to lower the heater.
NOTE: The hook portion of hook-type suspension hardware
length of chain may also now be installed, if required,
may directly engage the two holes in the front fixed
hanger and the center loop of the rear moveable
hanger.
Wood Beam
Most common for
residentia
applic
Locknut
Washer
Wood Beam
ations
min.
3/8" ( 10 mm)
Sc
rew Hook
Washer
l
Th
readed Hook
Joist Cl ip
m
As
Bar
Truss
Req'd
S-Hoo
Beam
Clamp
I-Bea
Most common for non-residential applications
k
Concrete Beam
Ancho
r
Front Fixed H anger
Rear Movable Hanger
45° Tilted Installation
1. Determine if the heater is going to be tilted left, or tilted right.
front and rear suspension points selected must be on the
The
side (left or right) of the heater as shown below.
same
2.
Attach suspension hooks and/or chains to the selected
suspension
points of the heater.
Heater Orientation
The MHT / HST tube heater may be installed in any of the three
ntations indicated below. Select the heater orientation that is best
orie
for the location that you have chosen for your heater.
suited
• Horizontally
• Tilted 45° Right
• Tilted 45°° Left
NOTE: If the heater is going to be vented through the roof,
be sure to carefully review the roof option installation portion of this section. Ensure that the selected
mounting site will satisfy the measurement parameters (vent length not to exceed 25 feet) described in
that section.
Enerco Group, Inc.,
| Gas-Fired Low-Intensity Infrar ed Heater Operating Instructions and Owner’s Manual
10
Use the se two suspensi on
poi
nts for Tilted 45 °
Ri
ght Insta llation
Use the se two suspensi on points for
Tilted
45 ° Left In stallation
Tilted Left
Tilted Right
MHT / HST HEATER ASSEMBLY INSTRUCTIONS
1. Place gaskets from Gasket kit (02885) on each side of the burner
Use the four mounting studs around each of the three-inch
box.
for location.
holes
Slide the tube flanges over the studs as was done in the prior
2.
with the gaskets. The tube ends extend through the flanges
step
to help with alignment.
Using the four long and four short nuts from the bolt kit (02876)
3.
re the tube set to the burner box. As shown in the diagram,
secu
the four long nuts in the center and the four short nuts on
use
the
outside.
4.
Slide the bulkhead and reflector assembly forward until it stops
on
the long nuts. Using the (4) 5/16-18 X 1/2" long screws form
(02876) bolt kit secure the bulkhead to the burner box.
the
USE CAUTION AS NOT TO
OVERTIGHTEN ASSEMBLY AS IT
MAY CAUSE DAMAGE TO PARTS
ASSEMBLY
OF
Enerco Group, Inc.,
11
Operating Instructions and Owner’s Manual | Gas-Fired Low-Intensity Infrared Heater
Typical Installation
Section 4 VENTING
The Illustration below shows a typical installation of the MHT / HST
ater. The installation drawing shown has a straight
tube he
horizontal venting
required for maintenance,
between the
arrangement and specifies the minimum space
as well as the allowable range of distances
two suspension points.
Detailed venting arrangements are illustrated in following portions
of
this section.
Vent terminal
Exterior
Wall
Minimum
Recommende d
for ser vicing
24"
Outside
wall thickn ess -
10" max. 1/2" min.
15"
Burner B ox
1"
Max.
X
Suspensio n
Points
Reflector
Minimum Mou
Heig
Min
6"
ht- 7 feet*
nting
X Dimension
Mode
l Min. Max.
45 102" 114"
MHTHST- 45 102" 114"
(*) For minimum mounting height in aircraft hangars and public
rages.
ga
This appliance is certified under the ANS/CSA Standard for Vented
red Space Heating Appliances. In accordance with these
Gas-Fi
dards all sidewall venting must conform to the supplied
stan
diag
ram for Vent Terminal Clearances, which are stated for both
and Canadian installations. These clearances should be
U.S.
red to but not less than those specified in the current ANSI
compa
Z223.1/NFPA 54, National Fuel Gas Code, or CSA B149.1, Natural
and Propane Installation Code. Clearances not covered in the
Gas
or above listed codes must comply with local installation
table
codes
and the requirements of your local gas supplier.
Canadian Installations1 US Installations2
A= Clearance above grade, 12 inches (30 cm) 12 inches (30 cm)
veranda, porch, deck or
balco
B= Clearance to window or door 6 inches (15 cm) for appliances < 6 inches (15 cm) for appliances <
C= Clearance to permanently * *
D= Vertical clearance to ventilated * *
E= Clearance to unventilated soffit * *
F= Clearance to outside corner * *
G= Clearance to inside corner * *
H= Clearance to each side of 3 feet (91 cm) within a height 15
I= Clearance to service regulator 3 feet (91 cm) *
J= Clearance to nonmechanical air 6 inches (15 cm) for appliances < 6 inches (15 cm) for appliances <
K= Clearance to a mechanical air 6 feet (1.83 m) 3 feet (91 cm) above if within 10 feet
L= Clearance above paved 7 feet (2.13 m) + *
M= Clearance under veranda, 12 inches (30 cm) ++ *
1 In accordance with the current CSA B149.1, Natural Gas and Propane Installation Code.
2 In accordance with the current ANSI Z223.1/NFPA 54, National Fuel Gas Code.
+ A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings.
++ Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
* For clearances not specified in ANSI Z223.1/NFPA 54 or CSA B149.1, one of the following shall be indicated:
ny
th
at may be opened 10,000 Btuh (3 kW), 12 inches (30 10,000 Btuh (3 kW), 9 inches (23
closed
window
so
ffit located above the
terminal
within a horizontal
distance
of 2 feet (61 cm) from
the
center line of the terminal
nter line extended above feet (4.5 m) above the *
ce
meter/regulator assembly meter/regulator assembly
vent outlet
inlet to building or the 10,000 Btuh (3 kW), 12 inches (30 10,000 Btuh (3 kW), 9 inches (23 cm)
supply
combustion
other appliance kW) and < 100,000 Btuh (30 kW), and < 50,000 Btuh (15 kW), 12
supply
sid
loc
po
rch deck, or balcony
a)
A minimum clearance value determined by testing in accordance with section 2.19.6, or;
b)
A reference to the following footnote:
“Clea
air inlet to any cm) for appliances > 10,000 Btuh (3 for appliances > 10,000 Btuh (3 kW)
inlet (3 m) horizontally
ewalk or paved driveway
ated on public property
rance in accordance with local installation codes and the requirements of the gas supplier.”
cm)
for appliances > 10,000 Btuh cm) for appliances > 10,000 Btuh
(3
kW) and < 100,000 Btuh (30 (3 kW) and < 50,000 Btuh (15
kW),
36 inches (91 cm) for kW), 12 inches (30 cm) for
appliances
36 inches (91 cm) for appliances inches (30 cm) for appliances >
> 100,000 Btuh (30 kW) 50,000 Btuh (15 kW)
> 100,000 Btuh (30 kW) appliances > 50,000 Btuh (15 kW)
Enerco Group, Inc., | Gas-Fired Low-Intensity Infrared Heater Operating Instructions and Owner’s Manual
12
BASIC FLUE VENTING (Residential Only)
• Venting must be in compliance with the latest edition of the
National Fuel Gas Code (ANSI. Z223.1 latest edition: or the
authority
having jurisdiction.
• Uninsulated single-wall metal pipe shall not be used outdoors in
climates for venting of these heaters as specified by Section
cold
7.8 of the ANSI Z223.1/NFPA 54 National Fuel Gas Code-latest
edition
.
• For the installation of a single-wall metal pipe through an exterior
combustible wall, refer to the latest edition of the National Fuel
Gas
Code or the authority having jurisdiction.
• In regions of the country where prevailing winds are consistently
higher
than 40 mph, it may be necessary to terminate the vent
above the roof level.
system
Other
venting references can be found in equipment volume of the
ASHRAE
Handbook.
A. SINGLE HEATER VENTING
a) Vertical Through the Roof
NOTE: For residential applications, the heater must
not be connected to a separate chimney,
but must be installed using the venting
system as specified below.
The seams along the length of the piping and the joints between
sections
lea
of piping should be sealed to prevent a potential
kage of flue gas into building. Use 100% RTV Silicone Rubber
Adhesive sealant suitable for 500°F.
6. All portions of the vent pipe shall be supported to prevent
from sagging.
7. When the vent pipe passes through areas where the ambient
rature is likely to induce condensation of the flue gasses,
tempe
the
vent pipe should be insulated and a condensation drain
be provided.
should
8. The minimum clearance to combustible materials for singlewall flue pipe shall be 6 inches. This may be reduced when the
combustible
material is protected as specified in the National
Fuel Gas Code or the authority having jurisdiction.
9. Single-wall metal pipe shall not originate in any unoccupied
attic or concealed space and shall not pass through any attic,
inside
wall or concealed space, or through any floor.
10. A venting system shall terminate at least 3 feet (0.9m) above
any forced air inlet located within 10 feet (3.1m).
Vent Cap
(Leslie VersaC ap)
Type B
Min.
10'
or les
2'
Min.
2' Mi n.
(when no wall o r
s
parapet exist)
(when
pa
2'
no wall or
rapet exist)
1. When venting the heater to outside of building through a roof,
3 inch O.D. single-wall metal pipe. This is to be constructed
use
galvanized sheet metal or other approved noncombustible,
of
rosion-resistant material as indicated by state and/or local
cor
.
codes
2. A vent passing through a combustible roof shall extend through
a 2-inch clearance roof thimble. Double-wall, Type B vent must be
for the portion of the vent system which passes through
used
the roof. An approved vent cap (such as Leslie “VersaCap” Type
must be attached to the end of the flue.
B)
3. The maximum equivalent length of vent pipe should be carefully
observed.
he
combustion
Minimum
A safety switch in the heater is designed to shut the
ater off before excessive flue restriction causes bad
.
Equivalent Length = 5 feet of Pipe
Maximum Equivalent Length = 25 feet of Pipe
the following correction factors to obtain the equivalent
Use
a)
A horizontal run is equal to 15 feet of vent length.
b)
An approved vent cap is equal to 10 feet of vent length.
c) For each elb
ow in the first 15 feet of run, they are equal to
length:
10 feet of vent length.
For each elbow past the first 15 feet of run, they are equal to
d)
15 feet of vent length
EXAMPLE
for an approved vent cap you have ---------10 ft.
for a
Your Maximu
.
horizontal run you have -----------------15 ft.
m Equivalent Length is ---------------- 25 ft.
4. Limit the quantity of 90° elbows to two. When vent pipe is in a
zontal run, it must rise not less than ¼ inch per foot from
hori
start of the vent system towards the vent terminal.
the
5. Joints between sections of piping shall be fastened by sheet
metal screws or other approved means.
Flashing
Clearance Thimble
2"
joint &
Seal
annular
space.
VERTIC AL
ROUGH THE ROOF
TH
Vent Termination (Residential Installations)
b)
4"
Vent
Dia
Total Vent
.
Heig
ht
(5
' Min.)
SINGLE HEATER VENTING
¼ per ft . rise
Lateral
1. The vent terminal shall terminate above the roof line so that no
discharge opening is less than 2 feet (0.6m) horizontally from
roof surface. The lowest discharge opening will be no closer
the
the minimum height specified in the following table.
than
minimum heights may be used provided the vent is not
These
than 8 feet (2.4m) from any vertical wall or similar
less
obstruction
H (Min.)
.
Not less tha n 8ft.
min.
2ft.
llaW la
ci
tre
V
Enerco Group, Inc.,
13
Operating Instructions and Owner’s Manual | Gas-Fired Low-Intensity Infrared Heater
MINIMUM HEIGHT FROM ROOF
TO LOWEST DISCHARGE OPENING
Roof Pitch H (Min)
at to 6/12 1.0 Feet
Fl
Over 6/12 to 8/12 1.5 Feet
Over 8/12 to 10/12 2.5 Feet
Over 10/12 to 12/12 4.0 Feet
Over 12/12 to 16/12 6.0 Feet
Over 16/12 to 20/12 7.5 Feet
2.
All other gas vents shall terminate not less than 2 feet (0.6m)
ab
ove the highest point where they pass through the roof and
at least 2 feet (0.6m) higher than any portion of a building
loc
ated within 10 feet (3.1m) as shown in the following
ration.
illust
Vent Cap
Type B
Vent Pipe
Type B
(Double
Storm Coll ar
ot Flashing
Bo
Wall)
10ft. or less
2ft. min.
NOTE : To minimize problems associated with
condensation in long runs, vent pipe can be
insulated.
3. The horizontal venting system approved with this heater consists
the Side Wall Vent Kit (02840) shown are page 3.
of
Limit the quantity of 90° elbows to two. When vent pipe is in a
4.
zontal run, it must be pitched downward ¼ inch per foot
hori
towards the vent terminal. The heater must be installed level.
5.
The horizontal venting system shall not terminate:
a)
Less than 4 feet (1.2m) below, 4 feet (1.2m) horizontally from,
or
1 foot (30cm) above any door, window or gravity air inlet into
any building. The bottom of the vent terminal shall be located at
7 feet (2.1m) above grade or above snow accumulation
least
levels as determined by local codes.
b)
Less than 3 feet (0.9m) from a combustion air inlet.
c)
Less than 3 feet (0.9m) from any other building opening or
any gas service regulator.
d) Directly over areas where condensate or vapor could create a
nuisance
meters, regulators, relief valves, or other equipment. Building
materials should be protected from flue gases and condensate.
6.
In regions of the country where prevailing winds are consistently
higher
system
or hazard or be harmful to the operation of gas utility
than 40 mph, it may be necessary to terminate the vent
above the roof level.
Vent Cap
2" Cle arance
Seal
joint &
annular
Vent Pipe
(Single Wall)
space.
c) Horizontal Through the Sidewall
heater, when horizontally vented, must be installed with
This
approved venting system.
the
venting the heater horizontally through a combustible
When
outside
wall, the same requirements listed previously for Venting
Through
the Roof apply except as follows:
1. When venting the heater to the outside of the building through
a sidewall, use 3 inch O.D. single-wall metal pipe. This is to be
constructed
of galvanized sheet metal or other approved
noncombustible, corrosion-resistant material as indicated by
st
ate and/or local codes.
2. For horizontal venting, the vent lengths may be as follows:
Minimum
Equivalent Length = 5 feet of Pipe
Maximum Equivalent Length = 25 feet of Pipe
the following correction factors to obtain the equivalent
Use
length
a) Subtract 15 feet if the run is horizontal
b)
Subtract 10 feet for an approved vent cap.
Subtract 10 feet for each elbow beyond 15 feet from the
c)
d)
Subtract 15 feet for each elbow within 15 feet of the heater.
for an approved vent cap you have ---------10 ft.
EXAMPLE
for a
Your Maximu
horizontal run you have -----------------15 ft.
m Equivalent Length is ---------------- 25 ft.
he
ater.
Type “B” Vent
18"
Wall
Venting/Ducting
For Commercial and Industrial Installations Only
:
Gene
ral Requirements
Use aluminum or teflon tape suitable for 550°F (3M Company
#433 or #363) or RTV silicone sealant.
tapes
He
ater must be vented in accordance with specification ANSI
Z223.1 - latest revision . Partial information relating to this
ation is provided in this section with regard to size and
specific
rations for venting arrangements. For complete information
configu
consult ANSI Z223.1 - latest revision and applicable local codes.
the following guidelines to help insure an adequate, safe
Use
ventin arrangement.
Wall Thimbl e
Single-Wall
Vent Pipe
Enerco Group, Inc., | Gas-Fired Low-Intensity Infrar
ed Heater Operating Instructions and Owner’s Manual
14
a) Be sure that method selected for venting heater complies with all
b) Exhaust end of heater will accept a three (3") inch flue pipe using
c) Heater may be vented to the outdoors either vertically or
d) If
e) Vent terminal opening must be beyond any combustible
f) If condensation in the flue is a problem, the flue length should
g) For vent specifications all of the following conditions must be
as required for each particular location.
codes
flue pipe adapter.
the
hori
zontally.
heater is to be vented horizontally:
1) Vent must exit building not less than seven (7') feet above
grade when located adjacent to public walkways.
2) Vent must terminate at least three (3') feet above any forced
inlet located within ten feet (10').
air
3) Vent must terminate at least four (4') feet below, for (4')
feet horizontally from, or one (1') foot above any door,
ow, or gravity inlet into any building.
wind
4) Vent terminal shall be located at least twelve (12") inches
from any opening through which vent gases could enter the
building
overhang.
shortened or insulated.
be
met:
The maximum equivalent length of vent pipe should be
ca
refully observed. A safety switch in the heater is designed to
shut the heater off before excessive flue restriction causes bad
combustion
Minimum
Maximum Equivalent Length = 25 feet of Pipe
Use
the following correction factors to obtain the equivalent
length
1) Subtract 15 feet if the run is horizontal.
2) Subtract 10 feet for an approved vent cap.
3) Subtract 10 feet for each elbow beyond 15 feet from the
he
4) Subtract 15 feet for each elbow within 15 feet of the heater.
Limit
zontal run, it must rise not less than 1/4 inch per foot from
hori
start of the vent system towards the vent terminal.
the
.
.
Equivalent Length = 5 feet of Pipe
:
ater.
the quantity of 90º elbows to two. When vent pipe is in a
Wall
Single
Single
wall vent run
wall terminal end
Single
Double Wall
Double
wall vent run and
wall terminal end
Double
Alternative Arrangements /Optional
Equipment
Horizontal Venting
a) In combustible or noncombustible walls, use vent kits on page
Follow vent manufacturer's instructions for proper
(3).
install
b) Three (3") inch O.D. flue pipe is required. Twenty five (25') feet
maximum
c) All flue joints should be sealed using suitable product such as
Gene
Temperature Silicone Adhesive Sealant.
d) Vent terminal should be installed at a height sufficient to
prevent blockage by snow.
e) Building materials should be protected from degradation by flue
gases
for Venting
ation.
length is recommended.
ral Electric RTV 106 or Permatex Form-A-Gasket Red High
.
Enerco Group, Inc.,
| Gas-Fired Low-Intensity Infrared Heater
Vertical Venting
a) Three (3") inch O.D. flue pipe, maximum twenty five (25') feet in
may be used as shown with approved vent cap.
length
b) An insulated thimble may be required to pass through
combustible
c) All flue joints should be sealed using suitable products (see
recommendation for horizontal venting).
Operating Instructions and Owner’s Manual
15
structures (check local codes).
Vertical Venting
Air For Combustion (Residential)
If indoor combustion air is to be supplied for a tightly enclosed
area, one square inch of free area opening shall be provided below
the
heater for each 1,000 Btu/hr of heater input.
When
outside air is used, the opening below the heater shall be
e square inch of free area for each 4,000 Btu/hr of heater input.
on
In contaminated atmospheres or high humidity areas, optional
air for combustion is recommended.
outside
Adequate clearances around the perforated fresh air plate must be
mai
ntained at all times. In larger open areas of buildings,
ration normally is adequate to provide air for combustion.
infilt
Direct Outside Air For Combustion (Residential)
Outside combustion air should be supplied directly to the heater
the building is subject to negative pressure or contaminants
when
are present in the building air. These contaminates include paints,
vents, corrosive vapors or any other foreign particles that may
sol
cause damage to the heater or result in poor combustion.
Outside
combustion air can be brought directly to the heater by a 3
diameter duct less than 25 feet long or equivalent. This is
inch
attached
control
end
should
the
less
supply
outlet
In
locating
capped
to a 3 inch starting collar that is fitted on inlet side of the
cabinet. An approved vent cap must be placed directly to the
of the outside combustion air inlet pipe. The combustion air inlet
be a minimum of 3 feet, either vertically or horizontally, from
flue vent termination. The air intake terminal must be located not
than one foot above grade. It is good installation practice to
combustion air from the same pressure zone as the vent
.
colder climates, where necessary, insulate the fresh air duct. Avoid
the fresh air duct directly above the control box. Provide a
cleanout T as necessary.
Outside Combustion Air Supply
The MHT / HST tube heater is approved for installation with an outside air
system. Some compounds such as halogenated hydrocarbons
supply
or
other corrosive chemicals in the air can be drawn into the
equipment
heater
enclosure should be avoided.
IMPO
ntaminants are present in the air, an outside combustion air
co
supply
For an outside air supply a three (3") inch O.D. single wall pipe may
attached to the heater. The duct may be up to twenty five (25')
be
feet maximum length or two (2') feet minimum length with no
re than two (2) elbows.
mo
and cause an accelerated rate of corrosion of some of the
components. The use of such chemical compounds near the
RTANT: If the building has a slight negative pressure or
to the heaters is strongly recommended.
VERTIC AL THROUGH THE ROOF
Vent Cap
(Leslie VersaC ap)
3" Dia.
Si
Min.
3'
g
Flashin
Star ting Collar
3"
air supply duct may have to be insulated to prevent
The
condens
be
the
ation on the outer surface. The outside air terminal should
securely fastened to the outside wall by drilling four (4) holes in
outside flange; wood screws or bolts and expansion sleeves
ngle-Wall Pipe
Min.
6"
¼”
downwards
Intake Vent
per ft.
may be used to fasten terminal.
Non-Pressurized Outside Air Supply Duct
Electrical Service Installation:
System Requirements
The MHT / HST tube heater requires a grounded three-prong electrical
et to be installed within 18”of the rear surface of the heater’s
outl
box. It is recommended that the outlet for the heater be
burner
ceiling-mounted
electrical extension cord to operate the heater.
an
In
order to control the heater thermostatically, it is necessary that
the
grounded three-prong electrical outlet be controlled with a on/
switch or a line voltage thermostat. Please consult with an
off
electrician
ater Rating: 120 VAC, 60Hz, Single Phase, 1 Amp
He
and should be on a dedicated circuit. DO NOT use
or follow all local electrical codes.
Enerco Group, Inc.,
| Gas-Fired Low-Intensity Infrar ed Heater Operating Instructions and Owner’s Manual
16
Low Voltage Thermostat Wiring Diagram
Heaters are normally controlled by thermostat. The
recommended 24V thermostat, connects to the unit as shown
in the diagram below.
Heater
(maximum 1-per thermostat)
CAUTION Label all wires prior to disconnection when
servicing controls. wiring errors can cause improper and
dangerous operation. Verify proper operation after servicing.
Grounding
120V-60Hz
Supply Circuit
heater
Low Voltage
Thermostat
Stock # 10367
The heater must be electrically grounded in accordance with the
following codes: United States: Refer to National Electrical Code,
ANSI/NF
cur
to
PA-70 – latest revision. Wiring must conform to the most
rent National Electrical Code and local ordinances. Canada: Refer
Canadian Electrical Code, CSA C22.1 Part 1– latest revision.
WARNING Electrical Shock Hazard
Plug heater into grounded three prong ceiling receptacle.
Do not cut or remove the grounding prong from this plug.
Do not use with an extension cord. Failure to follow these
instructions will result in death or electrical shock.
ATTENTION Risque d’électrocution
Brancher le cordon du radiateur sur un socle à 3 broches
et à la masse, situé au plafond. Ne pas sectionner ou
retirer la broche de masse de cette prise. N’utilliser aucun
cable de rallonge. Le non-respect de ces consignes peut
entrainer mort ou electrocution.
Enerco Group, Inc.,
The appliance, when installed, must be electrically grounded in
accordance with local code, or in the absence of local codes, with
e National Electrical Code (ANSI/NFPA 70) or Canadian Electrical
th
(CSA 22.1) , if an external electrical source is utilized.
Code
Gas Service Installation
Install Gas Supply Lines
A ½” gas supply connection is required as shown below. To check
pressure, a plugged 1/8” NPT tapping is required upstream
system
the manual gas shut-off valve supplied with the heater.
of
Be
fore connecting the heater to the supply system, verify that all
pressure testing of the gas piping has been completed.
high
DO
NOT HIGH PRESSURE TEST THE GAS PIPING WITH THE
ER CONNEC TED.
BURN
Follow these instructions to ensure a safe gas supply system
ation:
install
1. Support all gas piping with suitable pipe hanging materials.
2. Use wrought iron or wrought steel pipe and malleable iron
ttings. The use of copper tube and brass fittings is acceptable
fi
Operating Instructions and Owner’s Manual | Gas-Fired Low-Intensity Infrared Heater
17
when such use is in compliance with local codes. All pipe, tube
fittings should be new and free from defects. Carefully
and
ream the pipe and tube ends to remove obstructions and burrs.
3. Use LP-resistant joint compound on all threads.
4. Check the pipe and tube connections for leaks before placing
he
ating equipment into service. When checking for gas leaks,
e a soap and water solution; never use an open flame.
us
NOTE: A plugged 1/8” NPT tapping must be provided upstream
of
the gas supply to the heater. The gas supply line
connecting
ows for some movement of the unit. The appliance will
all
go
through expansion and contraction during a heating
cycle.
to the heater appliance should be such that it
Section 5 OPERATION
Flex Pipe
Supplied
by others
He
ater
| Gas-Fired Low-Intensity Infrar ed Heater Operating Instructions and Owner’s Manual
Enerco Group, Inc.,
18
Operation of the Heater
CHILDERN AND ADULTS SHOULD BE ALERTED TO THE HAZARDS
HIGH SURFACE TEMPERATURES AND SHOULD STAY AWAY TO
OF
AVOID BURNS OR CLOTHING IGNITION.
YOUNG CHILDERN SHOULD BE CAREFULLY SUPERVISED WHEN
ARE IN THE SAME SPACE AS THE HEATER.
THEY
CLOTHING OR OTHER FLAMMABLE MATERALS SHOULD NOT BE
HUNG
FROM THE HEATER, OR PLACED ON OR NEAR THE HEATER.
ANY
GUARD OR OTHER PROTECTIVE DEVICE REMOVED FOR
SURVICING THE HEATER MUST BE REPLACED PRIOR TO OPERATING
THE
HEATER.
INS
TALLATION AND REPAIR SHOULD BE DONE BY A QUALIFIED
SE
RVICE PERSON. THE HEATER SHOULD BE INSPECTED BEFORE USE
AT LEAST ANNUALLY BY A QUALIFIED SERVICE PERSON. MORE
QUENT CLEANING MAY BE REQUIRED AS NECESSARY. IT IS
FRE
IMPER
ATIVE THAT THE CONTROL COMPARTMENT, AIR
PASSAGEWAYS AND BURNER (S) OF THE HEATER ARE KEPT CLEAN.
1. Turn the thermostat up. When the thermostat calls for heat,
blower motor will energize.
the
2. When the motor approaches nominal running speed, the air
proving switch closes and activates the ignition module which in
initiates the purge.
turn
3. The ignition module then energizes the spark igniter.
4. When sparking begins, the gas valve is energized.
5. If a flame is detected, the gas valve remains open. When the
for heat is satisfied, and the system control mechanism de-
call
ene
rgizes, the burner line voltage supply and the gas valve are
off.
turned
6. If no flame is detected, the gas valve is closed, and a purge
begins. After the purge period, the ignition module
period
rgizes the spark igniter and the gas valve. If a flame is still
ene
not established, a third and final purge/ignition sequence is
After three failed attempts, the system control
begun.
mechanism
unit
ater for at least five seconds.
he
7. With a three-try module, when the flame is established and
then
automatically turn off. A purge and trial for ignition will then
occu
8. Periodic visual check of burner flame while unit is in operation
rough sight glass in bottom of unit.
th
will lock out for a period of one hour, or until the
is reset. Reset is accomplished by removing power from the
lost on the first or second trial, the gas valve will
r.
For best performance, the following maintenance procedures
should
be performed by a qualified service agency before each
ating season:
he
1. A qualified service agency should be contacted for service other
than
routine maintenance.
WARNING Turn off the gas and electrical supplies to
the
heater before performing any service or maintenance.
Failure to observe this warning will cause death, injury or
property damage.
ATTENTION le virage du gaz et les provisions
électriq
service de anr ou l’entretien. L’échec pour observer que
cet avertissment causera la mort, les dommages de
blessu
2. Check condition of blower scroll and motor. Dirt and dust may
be
used
3. Check the condition of the burner cup. Carefully remove any
dust
4. Inspect the igniter. Replace igniter if there is excessive carbon
residue, erosion of electrodes of other defects.
5. Check to see that the burner observation window is clean and
free of cracks or holes. Clean or replace as required.
6. Check the flue pipe for soot, dirt or obstructions. The flow of
combustion
cleaning
7. Outside surfaces of heater reflector may be cleaned by wiping
with
8. Check vent terminal and outside air inlet to see that they have
not become blocked during the non-heating season. If either
pipe
he
9. Verify proper operation after service.
ues à l’appareil de chauffrage l’avant d’exécuter
re ou propriété.
blown out with compressed air, or a vacuum cleaner may be
.
or debris form inside burner cup.
and ventilation air should not be obstructed. After
as necessary, re-attach the flue pipe to the heater.
a damp cloth.
is restricted, the air switch won’t close, resulting in a no-
at situation.
Proper Operating Flame
Section 6 MAINTENANCE
Pre-Season Maintenance
Heater area to be kept clear and free form combustible materials,
gasoline
Do
Immedi
appliance
co
(C
co
ope
and other flammable vapors and liquids.
not use this appliance if any part has been under water.
ately call a qualified service technician to inspect the
and replace any part of the control system and any gas
ntrol, which has been under water.
AUTION) Label all wires prior to disconnection when servicing
ntrols. wiring errors can cause improper and dangerous
ration.
Enerco Group, Inc.,
19
Operating Instructions and Owner’s Manual | Gas-Fired Low-Intensity Infrared Heater
Section 7 TROUBLESHOOTING
General
This troubleshooting quide has been designed to assist you in locating and correcting minor problems that may occur with the MHT / HST
tube heater.
BLOWER DOES NOT COME ON
Possible Cause Try This….
Power cord is not plugged in. Plug power cord into a grounded three prong Outlet.
Thermost
DSI module needs to be reset. Unplug heater power cord from the electrical Outlet: wait for a
No
Faulty blower motor Replace blower motor.
at setting is too low. Increase thermostat temperature setting.
minimum
power at electrical outlet. Replace fuse or reset circuit breaker
of five seconds. Plug heater cord back into outlet.
IGNITER DOES NOT SPARK
Possible Cause
DSI
module needs to be reset.
Try This…..
heater power cord from the electrical outlet: wait for a
Unplug
minimum
of five seconds. Plug heater cord back into outlet.
Faulty igniter or ignition wire.
switch does not operate.
Air
spark gap incorrect.
Igniter
Unplug heater power cord from the electrical outlet; check igniter and
wire for damage. If damaged, replace igniter and/or ignition
ignition
.
cable
Check
flue/air supply duct for obstructions; remove obstructions as
required. Check for loose/leaky air hoses to the air switch; repair/
replace/tighten hoses as required. Check for 24V across the secondary
terminals
Check
wi
120V is not present, check wiring between power cord, blower motor
and
terminals;
swi
unit
Reset spark gap to 1/8’ (0.125”).
4 and 5 (red and yellow wires) of the transformer. IF NO:
for 120V across the primary terminals 1 and 3 (black and white
res) of the transformer. If 120V is present, replace transformer. If
transformer. IF YES: Connect a jumper wire across air switch
if jumper wire allows blower to operate, replace pressure
tch (see replacement parts list for part number that applies to your
rating).
Enerco Group, Inc.,
| Gas-Fired Low-Intensity Infrar ed Heater Operating Instructions and Owner’s Manual
20
BURNER DOES NOT LIGHT
Possible Cause
Air
in the gas line.
Imp
roper gas inlet pressure.
Gas
valve does not open.
Low gas outlet pressure.
Try This….
rge gas lines.
Pu
Check
gas inlet pressure at the 1/8” NPT plugged tap. Gas inlet
pressure should be as follows:
Natural Gas: 5.0”w.c. min.; 10.5” max.
LP
Gas: 11”w.c. min.; 13.0” max.
gas inlet pressure does not meet inlet pressure requirements
If
ntact the gas company.
co
for 24V across valve terminals.
Check
Check
Shutoff On Valve.
NO: Check wiring between the ignition module and the valve.
IF
Repair/replace wires as required. If wiring is OK, replace ignition
mo
dule. IF YES: Replace gas valve.
Check
gas manifold pressure. Measure manifold pressure at the
pressure tap on the gas valve.
gas manifold pressure. Measure manifold pressure at the
Check
pressure tap on the gas valve. Natural Gas: 4.0” w.c. LP Gas: 10.0”
w.c. If manifold pressure does not meet requirements, adjust valve
et pressure with the adjustment screw on the valve. NOTE:
outl
Proper inlet gas pressure must be verified before performing outlet
pressure testing.
BURNER DOES NOT STAY LIT
Possible Cause
Damaged wires between DSI module and electrode.
Faulty DSI module
Damaged
Electrode
Try this…..
Replace wires as required.
Replace DSI module.
Replace Electrode
Enerco Group, Inc.,
21
Operating Instructions and Owner’s Manual | Gas-Fired Low-Intensity Infrared Heater
Section 8 ILLUSTRATED PARTS
Illustrated Parts
This section provides the part numbers and pictorials for
compone
illus
nts of the MHT / HST tube heater. Callout letters on the
trations are keyed to the associated parts list.
E
ITEM PART NUMBER DESCRIPTION MHT-45 HST-45
A 02808 Spark Electrode 1 1
B 02837 Ignition Wire 1 1
0579
5 Orifice ( NG)
05747 Orifice (LP)
D 02795 Sight Window 1 1
E 02814 Blower Motor 1 1
F 02810 Ignition Module 1 1
G 08364A Tr ansformer 1 1
H 02806 Manifold 1 1
I 02822 Pressure Switch 1 1
J 02812 Gas Valve (N.G.) 1 1
02811 Gas Valve (L.P.) 1 1
K 0 2 8 0 2 R e l a y
1
1
1
1
1
1
Enerco Group, Inc.,
| Gas-Fired Low-Intensity Infrar
ed Heater Operating Instructions and Owner’s Manual
22
MHT / HST
A
G
B
45 Tube Heater
E
D
C
REPLACEMENT PARTS LIST FOR HEATER MODEL MHT / HST TUBE HEATER
REF.# ITEM# DESCRIPTION
A F202850 MHT-45NG Burner Box for (F208850)
F202851 MHT-45LP Burner Box for (F208851)
F102850 HST-45NG Burner Box for (F108851)
F102851 HST-45LP Burner Box for (F108851)
Tube
B F106250 MHT / HST - 45
C 06014 Hanger
D 06016 Hanger Clamp
E 06008-9 MHT/ HST-45 R
F 06009 Reflector End Cap
G 03438 Tubulator (inside tube)
Set
eflector
F
Enerco Group, Inc.,
ALL WARRANTY CLAIMS REQUIRE PROOF OF PURCHASE
Operating Instructions and Owner’s Manual | Gas-Fired Low-Intensity Infrared Heater
23
MR. HEATER
M
O
D
E
L
MHT 45
OPERATING INSTRUCTIONS
AND
OWNER’S MANUAL
HEATSTAR
M
O
D
E
L
WARNING:
USE ONLY MANUFACTURER’S REPLACEMENT PARTS. USE OF ANY OTHER PARTS
COULD CAUSE INJURY OR DEATH. REPLACEMENT PARTS ARE ONLY AVAILABLE
DIRECT FROM THE FACTORY AND MUST BE INSTALLED BY A QUALIFIED SERVICE
AGENCY.
FOR INFORMATION REGARDING SERVICE OR PARTS:
Contact your local heating service technician or dealer.
FOR ADDITIONAL INFORMATION:
Please call Toll-Free 800-251-0001
Our office hours are 8:30 AM — 5:00 PM, EST, Monday through Friday.
Please have the model number, serial number and date of purchase ready.
LIMITED WARRANTY
The
company warrants this product to be free from imperfections in material or
workmanship, under normal and proper use in accordance with instructions of The
ny, for a period of one year from the date of delivery to the buyer. The Company, at
Compa
its
option, will repair or replace products returned by the buyer to the factory,
transportation prepaid within said one year period and found by the Company to have
imperfections in material or workmanship.
If
a part is damaged or missing, call our Customer Service Department at 800-251-0001.
Address any Warranty Claims to the Customer Service Department, EGI 4560 W.
160th ST., CLEVELAND, OHIO 44135. Include your name, address and telephone number and
details concerning the claim. Also, supply us with the purchase date and the name and
include
of the dealer from whom you purchased our product.
address
The
foregoing is the full extent of the responsibility of the Company. There are no other
warranties, express or implied. Specifically there is no warranty of fitness for a particular
purpose
liable
the
replacement shall be the exclusive remedy for any breach of warranty. There is no warranty
against
usage
alte
ope
Some
damages, so the above limitation or exclusion may not apply to you. This Warranty gives you
specific
and there is no warranty of merchantability. In no event shall the Company be
for delay caused by imperfections, for consequential damages, or for any charges of
expense of any nature incurred without its written consent. The cost of repair or
infringement of the like and no implied warranty arising from course of dealing or
of trade. This warranty will not apply to any product which has been repaired or
red outside of the factory in any respect which in our judgment affects its condition or
ration.
states do not allow the exclusion or limitation of incidental or consequential
legal rights, and you may have other rights which vary from state to state.
-WWW.mrheater.com or WWW.enerco.com
HST 45
CSA REQUIREMENT 7-89
ANSI Z21.86B 2002
ANS Z83.20 • CSA 2.34-2003
Enerco Group, Inc.,
EGI., reserves the right to make changes at any time, without notice or
obligation, in colors, specifications, accessories, materials and models.
4560 W. 160TH ST., CLEVELAND, OHIO 44135 • 216-916-3000
rco Group, Inc.,
Ene
© 2003, Mr. Heater. All rights reserved
| Gas-Fired Low-Intensity Infrared Heater Operating Instructions and Owner’s Manual
24
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