Mr. Heater MH35LPTS User Manual

OPERATING INSTRUCTIONS
AND OWNER’S MANUAL

Model # MH35LPTS

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.

GAS-FIRED INFRA-RED
PORTABLE CONSTRUCTION HEATER

DO NOT LEAVE HEATER UNATTENDED OR IN OPERATION WHILE SLEEPING

GENERAL HAZARD WARNING:

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 UNDERSTAND AND FOLLOW THE INSTRUCTIONS SHOULD USE OR
SERVICE THIS HEATER.

IF YOU NEED ASSISTANCE OR HEATER INFORMATION SUCH AS INSTRUCTION MANUALS, 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 COMPUSTIBLES OR PRODUCTS SUCH AS GASOLINE, SOLVENTS,
PAINT THINNER, DUST PARTICLES OR UNKNOWN CHEMICALS.

WARNING: NOT FOR HOME OR RECREATIONAL VEHICLE USE

06/03 Revision L1 #70725MR. HEATER INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 • 216-881-5500

SPECIFICATIONS

MODEL NO. ....... MH35LPTS

GAS TYPE ................ LP-Gas

MAX. INLET

PRESSURE. ........ 27.5 in. w.c.

MIN. INLET

PRESSURE ......... 27.5 in. w.c.

MANIFOLD

PRESSURE ........ 25.5 in. w.c.

Do not exceed the gas supply pressures shown on rating plate
for Model MH35LPTS. The maximum inlet gas supply pressure and
the minimum inlet gas supply pressure (for purposes of input
adjustment) for LP-Gas are shown as follows:

WARNING

DO NOT EXCEED 27.5” W.C. (1.0 p.s.i.) INLET
PRESSURE TO HEATER.

VENTILATION

WARNING

THIS APPLIANCE IS UNVENTED AND MUST BE
USED ONLY IN A WELL VENTILATED AREA.

The flow of combustion and ventilation air must not be
obstructed. DO NOT use in a tightly enclosed area. Any
combustion process requires and consumes oxygen, and may
produce carbon monoxide. This heater must be operated with
adequate ventilation. Two openings directly to the outdoors must
be provided, one low and one high, preferably on opposite sides
of the area to be heated. Each of these openings must provide at
least three square inches of combustion air-intake area and
exhaust outlet area for every 1000 BTUs per hour of heater input
rate in order to complete the combustion/ventilation process.
Provide additional ventilation for any additional fuel-burning
appliances and/or additional occupants.

CLEARANCE (Minimum clearances to combustible materials)

MODEL NO. BTU/HR RATING NORMAL OPERATING CLEARANCES TO

TYPE GAS POSTION COMBUSTIBLES

NATURAL LP & NG TOP SIDES BACK FRONT

MH35LPTS 35,000* VERTICAL 40” 40” 0” 54”

*Tank size and tank temperature can directly affect BTU output

CONTENTS

FOR YOUR SAFETY

Installation Instructions.................................................... 3

Location .......................................................................... 3

Piping .............................................................................. 3

Operating Instructions ..................................................... 4

Lighting and Shut Down .................................................. 4

Maintenance Instructions ................................................ 5

Replacement Parts List ..................................................... 6

Service and Parts Ordering Information ........................... 8

Do not use this heater in a space where
gasoline or other liquids having flammable
vapors are stored or used.

The heater is designed and approved for use as a construction
heater under ANSI Z83.7 / CGA 2.14 - 2000

We cannot anticipate every use which may be made of our
heaters. CHECK WITH YOUR LOCAL FIRE SAFETY AUTHORITY IF
YOU HAVE QUESTIONS ABOUT APPLICATIONS.

Other standards govern the use of fuel gases and heat producing
products in specific applications. Your local authority can advise
you about these.

This appliance is intended to be used primarily for the heating of
buildings under construction, alteration or repair.

THE STATE OF CALIFORNIA REQUIRES THE FOLLOWING WARNING:

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).

Mr. Heater | Gas-Fired Infra-Red Portable Construction Heater Operating Instructions and Owner’s Manual

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GENERAL INFORMATION

A. Your MR. HEATER portable gas-fired infra-red heater comes

fully assembled and is tested at the factory for proper gas
and input as stated on the nameplate.

B. Each heater is equipped with a 100% safety shutoff, push

button valve which will automatically stop the flow of gas in
the event the heater fails to operate for any reason. A tip
over switch and an excess flow check are also standard on
the model MH35LPTS.

C. Before proceeding with this installation, be sure to inspect for

damages. The freight company must be notified of any
damages and request that an inspection be made. MR.
HEATER will send replacements for damaged parts only after
receiving a signed inspection report to prove the liability of
the freight company.

FOR SAFE OPERATION

A. READ THESE INSTRUCTIONS CAREFULLY. Read and

adhere to these instructions. DO NOT allow anyone
who has not read these instructions to assemble, light,
adjust or operate this heater.

B. LP-Gas IS HIGHLY FLAMMABLE. In the event of a leak, LP-

Gas will accumulate and the possibility of a fire is present.
LP-Gas is scented and its strong odor is readily detectable.
Never strike a match, bring any flame or create an electric
spark in an enclosure when you smell LP-Gas. Ventilate the
area thoroughly, move the heater outside, and correct the
source of the leak before attempting to light any appliance.

C. Always operate the heater with the LP-Gas cylinder in an

upright position on a level non-combustible surface. NEVER

PLACE THE CYLINDER ON ITS SIDE WHEN OPERATING
THE HEATER.

D. DO NOT attempt to operate the heater with any gas

other than that indicated on the heater nameplate.

The minimum ambient temperature rating for this heater is 20
degrees F.

This heater incorporates a “Tip Over” switch which automatically
shuts off the burner in the event of tipping. Ensure that this
switch is in the vertical position and is secured with the screws
provided (see Fig. 4). DO NOT operate this heater with the

LP-gas supply cylinder in any other than the upright
position.

LOCATION

Although this heater incorporates a “tip over” switch, the heater
and LP-Gas supply cylinder must be located on a hard, flat, level
surface to minimize the risk of accidental tipping. The LP Gas
supply cylinder should be adequately restrained to prevent
accidental tipping. DO NOT OPERATE this heater with the

supply cylinder in any other than the upright position.

This appliance must be installed only in locations where the
potential for physical damage to the appliance (i.e., due to
physical contact) is reduced to a minimum.

The installer must inform the owner/operator of this appliance
that precautions must be taken to protect the appliance from
physical damage.

This appliance produces radiant heat. Therefore, it must be
located at least six feet away from any LP-Gas container and
must not be directed toward any LP-Gas container within 20 feet.

The heater must be installed in a location such that it will not be
exposed directly to water spray, rain, and/or dripping water.

Use of this heater in a draft/windy area may decrease its
efficiency. If possible, operate the unit in a draft free area or
turn the face of the heater away from the draft.

PIPING:

For Model MH35LPTS
(for use with LP-Gas)

INSTALLATION INSTRUCTIONS

GENERAL

For the U.S. and/or Canada, the installation of this appliance
must comply with local and/or Provincial codes or, in the
absence of these codes,

• With the (U.S.) National Fuel Gas Code, ANSI Z223.1 –
Latest Edition, AND with the (U.S.) Standard for the Storage
and Handling of Liquified Petroleum Gases, ANSI/NFPA 58,
OR

• With the current (Canadian) CAN/CGA B149.1 AND B149.2
INSTALLATION CODES.

This heater (including hose and regulator assembly) must be
inspected before each use and at least annually by a qualified
service person. If the hose for Model MH35LPTS shows evidence of
excessive abrasion or wear, or if the hose is cut, it must be
replaced prior to the heater being put into operation. The
replacement hose assembly shall be that specified by the
manufacturer. See the parts list.

This model may be connected to a self-contained LP-Gas supply
system using the hose and regulator assembly supplied with the
appliance, OR, it may be connected to a permanently installed
LP-Gas supply system.

If connected to a self-contained LP-Gas supply system, the hose
assembly must be inspected prior to each use of the heater. If it
is evident that there is excessive abrasion or wear, or the hose is
cut, it must be replaced prior to the heater being put into
operation.

If connected to a self-contained LP-Gas supply system, the
cylinder must have no less than a minimum capacity of 20
pounds and no more than a maximum capacity of 100 pounds of
LP-Gas. DO NOT connect this appliance to a cylinder having less
than a nominal 20 pound capacity of LP-Gas. DO NOT connect
this appliance to more than one (1) 100 pound cylinder.

WARNING

NEVER USE A FORK LIFT TRUCK TYPE
CYLINDER.

Operating Instructions and Owner’s ManualMr. Heater | Gas-Fired Infra-Red Portable Construction Heater

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