Mr. Heater HS25LP Manuel utilisateur

Marque: Mr. Heater

Modèle: HS25LP

Catégorie: Chauffe-eau

Taper: Manuel utilisateur

GAS FIRED INFRA-RED WORKSHOP HEATER

ENERCO GROUP, INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 · 216-916-3000

WARNING: 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.

- Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

- WHAT TO DO IF YOU SMELL GAS

• Shut off gas supply

• Do not try to light any appliance

• Do not touch an electrical switch; do not use any phone in your building.

• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

• If you cannot reach your gas supplier, call the fire department.

- Installation and service must be performed by a qualified installer, service agency, or the gas supplier.

WARNING: This is an unvented gas-fired heater. It uses air (oxygen) from the room in which it is installed.

Provisions for adequate combustion and ventilation air must be provided. Refer to Fresh Air for Combustion and

Ventilation section on page 3 of this manual.

WARNING: Improper installation, adjustment, alteration, service or maintenance can cause property damage,

injury or death. Read the installation, operation, and maintenance instructions thoroughly before installing or

servicing this equipment. For assistance or additional information consult a qualified installer, service agency, or

gas supplier.

18673 Rev. D 06/06

Installer: Leave this manual with the appliance. Consumer: Retain this manual for future reference.

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.

MH25NG

MH25LP

MODEL

OPERATING INSTRUCTIONS AND OWNER’S MANUAL

MR. HEATER HEATSTAR

HS25NG

HS25LP

WARNINGS

WARNING: Improper installation, adjustment,

alteration, service or maintenance can cause

property damage, injury or death. Read the

installation, operation, and maintenance instruc-

tions thoroughly before installing or servicing this

equipment. For assistance or additional informa-

tion consult a qualified installer, service agency, or

gas supplier.

WARNING: When used without fresh air, heater

may give off CARBON MONOXIDE, an odorless

poisonous gas. OPEN WINDOW AN INCH OR

TWO FOR FRESH AIR WHEN USING HEATER.

WARNING: This heater is equipped with a PILOT

LIGHT SAFETY SYSTEM. DO NOT TAMPER

WITH PILOT LIGHT SAFETY SYSTEM.

WARNING: If heater shuts off, do not relight until

you provide fresh air. If heater keeps shutting off,

have it serviced. Keep burner and control clean.

Open door for 5 minutes.

Maintain clearances as shown in Figure 2 or on

heater nameplate.

• DO NOT USE MATCH OR OTHER FLAME

FOR LEAK TESTING.

• DO NOT EXCEED 1/2 PSI INLET PRESSURE

TO HEATER.

DANGER: Carbon monoxide poisoning may lead to

death.

Carbon Monoxide Poisoning:

Early signs of carbon monoxide poisoning resemble the

flu, with headaches, dizziness, or nausea. If you have

these signs, the heater may not be working properly. Get

fresh air at once! Have heater serviced. Some people are

more affected by carbon monoxide than others. These

include pregnant women, persons with heart or lung

disease or anemia, those under the influence of alcohol,

and those at high altitudes.

CAUTION

• Never connect gas valve or thermostat to line voltage

or a transformer.

• If the infra-red color of the grid becomes dull when the

building furnace is operating, consult gas supplier on

correct gas supply piping sizes.

• This heater is for indoor installation only!

NOTE

Gasket binder material used in this heater assembly will

temporarily emit an odor and/or vapor. This condition will

clear up in approximately 20 minutes and thereafter will

not reoccur. Refer to Chapter 2 for ventilation.

TABLE OF CONTENTS

Chapter Title Page

I Introduction ............................................ 3

II Heater Installation .................................. 5

III Heater Operating Instructions ................. 10

IV Operator Maintenance Instructions ......... 12

V Replacement Parts List.......................... 15

2Installation instructions and Owner’s Manual

Model # MH25NG/LP HS25NG/LP

GAS CONTROL

VALVE

POWERPILE

GENERATOR EXHAUST

VENT

BASIC HEATER

WALL MOUNTING

BRACKET

THERMOSTAT

CABLE

THERMOSTAT

CHAPTER I

INTRODUCTION

1. EQUIPMENT

This heater is the consumer version of a highly success-

ful, thoroughly tested, gas fired, infrared, industrial utility

heater.

This heater does not require an external electrical source

for operation.

The major components of the heater and a typical

installation are identified in Figure 1. The basic heater

Figure 1. Heater Major Components

•The cover and the following page provide a safety

summary that attempts to gather all the warn-

ings used within the manual in one location.

•A table of contents is provided for easy reference

to any portion of the manual.

•Chapter 1 provides general information on the

use of this manual and on the heater.

consists of the complete burner assembly, flue deflector,

grid, reflector assembly and face guard.

2. PURPOSE OF EQUIPMENT

WARNINGS

This heater is for indoor installation only.

This heater is designed to heat indoor areas. Do not

use for inhabited or small, enclosed areas.

This heater is an ideal selection when a simple and

easily installed method of heating a utility building is

required.

3. MODELS COVERED IN THIS MANUAL

Model MH25NG/HS25NG is for use where natural gas is

intended fuel source. Model MH25LP/HS25LP is for use

where propane gas is the intended fuel source.

4. MANUAL USE

•The procedures and information contained within

this manual will allow purchaser of this heater to

install and maintain the heater safely and

efficiently.

3Installation instructions and Owner’s Manual

Model # MH25NG/LP HS25NG/LP

•Chapter 2 provides heater installation requirements

and information, such as: a) minimum distances

from heater components to combustible materials,

b) heater mounting requirements, c) venting

requirements, d) fuel supply requirements, e)

thermostat mounting.

•Chapter 3 covers startup, operation, and shutdown

of the heater.

•Chapter 4 provides operator maintenance instruc-

tions such as: troubleshooting, adjustments,

powerpile replacement and operator checks.

•Chapter 5 provides warranty and replacement

parts information.

5. GENERAL INFORMATION

• Your heater comes fully assembled and is tested

at the factory with the appropriate type of gas and

at the input pressures stated on the nameplate.

• Upon receipt and prior to attempting installation,

be sure to inspect the heater and its packaging for

damage and/or missing components. If damage is

found or missing components are suspected,

contact your dealer. See Chapter 5 for a complete

listing of items required for the safe and efficient

installation and use of this heater.

• Never attempt to operate the heater using a fuel

other than that specifically identified on the

nameplate.

• The installation of the heater must conform with all

local building codes or, in absence of governing

local codes, with the National Fuel Gas Code,

ANSI Z223.1 (NFPA 54). This code can be ob-

tained from either the: Canadian Standards

Association, 8501 East Pleasant Valley Road,

Cleveland, OH 44131; or, NFPA, Battery March

Park, Quincy, MA 02269.

• Canadian installations must comply with CAN/

CGA-B149.1.2 gas code which can be purchased

from Canadian Gas Association, 55 Scarsdale

Road, Don Mills, Ontario M3B 2R3.

• Contact factory when appliance is to be installed at

high altitudes. Factory supply high altitude conver-

sion kit with instructions and data plate.

• A plugged 1/8" N.P.T. Test Gage Connection is

provided on the heater gas control.

•See Tables 1 and 2 for heater specifications:

WARNING: Improper installation, adjustment, alteration,

service or maintenance can cause property damage,

injury or death. Read the installation, operation, and

maintenance instructions thoroughly before installing or

servicing this equipment. For assistance or additional

information consult a qualified installer, service agency,

or gas supplier.

•For additional information contact:

The factory.

•The following extra NFPA Manuals are helpful when

installing this heater in a location not anticipated in

this manual:

Number Related Subject

NFPA 88 Clearances to Combustible Surfaces

NFPA 409 Clearances to Combustible Surfaces

DO NOT EXCEED 1/2 PSI INLET PRESSURE TO HEATER

Table 1. BTU Ratings and Supply Pressures

MODEL BTU/HR. RATING GAS SUPPLY PRESSURE (W.C.) ORIFICE

NO. GAS MIN. MAX. MANIFOLD SIZE

NATURAL PROPANE NAT. L.P. NAT. L.P. NAT. L.P. NAT. L.P.

MH/HS25NG 25,000 — 7.0" — 14" — 6" — 45 —

MH/HS25LP — 22,000 — 11" — 14" — 10" — 55

Table 2. Heater Dimensions and Orifice Sizes

MODEL OPERATING ORIFICE SIZE INPUT SIZE

NO. PRESSURE BURNER PILOT BTU/H WIDTH LENGTH HEIGHT WEIGHT

MH/HS25NG 6.0"w.c. 45 .018 25.000 12-1/4" 29-3/4" 7" 20 lb.

MH/HS25LP 10"w.c. 55 .011 22,000 12-1/4" 29-3/4" 7" 20 lb.

4Installation instructions and Owner’s Manual

Model # MH25NG/LP HS25NG/LP

Provide adequate clearance to combustibles per Table 3 at

control end of heater for servicing and minimum on top and

sides for ventilation and combustion air supply.

A minimum clearance of 8’ above floor for public garages in

accordance with NFPA No. 88 most recent edition, or

Figure 1; whichever is larger.

Canadian installations in public garages must comply with

CGA 149B.1.9 most recent edition.

WARNING: Maintain clearances as shown in Figure 2

or on heater nameplate.

CHAPTER II

HEATER INSTALLATION

1. GENERAL INSTALLATION INFORMATION

AND REQUIREMENTS

• The required minimum clearances to combustible

surfaces are illustrated in Figure 2 and Table 3.

As shown on Figure 2, the front of the heater is

installed at the minimum required clearance to

combustible surfaces and toward open space,

and then the other sides must have a minimum

clearance of 16 inches to combustible surfaces.

EXHAUST

VENT CEILING

14”

MINIMUM

16”

MINIMUM

48”

MINIMUM

OPEN

WORKSHOP DOOR

HEATER

WALL

BRACKET

16”

MINIMUM

14-1/2”

FLOOR LINE

1. ONLY FLUE SIDE OF HEATER CAN

BE ELEVATED (30o).

2. HEATER SIDE REFLECTOR MUST

BE HORIZONTAL.

NOTE:

Figure 2. Installation Clearances to Combustible Surfaces

Table 3. Installation, Ventilation and Mounting Information

BTU/HR. RATING NORMAL

MODEL GAS MOUNTING CLEARANCES TO COMBUSTIBLE SURFACES

NO. NAT. L.P. POSITION TOP SIDES BACK BELOW

MH/HS25NG 25,000 — 30o14" 16" 16" 48"

MH/HS25LP — 22,000 30o14" 16" 16" 48"

5Installation instructions and Owner’s Manual

Model # MH25NG/LP HS25NG/LP

•This heater may be mounted on any wall;

however, it is recommended that the heater be

mounted in the middle of the wall opposite any

overhead doors.

•When selecting installation locations for this

heater ensure that the opening of any exterior or

interior doors or windows will not violate mini-

mum clearances or contact any heater compo-

nents.

•If an overhead door is installed in the building,

verify that the heater is not installed in such a

way as to interfere with door operation and verify

that the door in its open position will not reduce

clearances below the minimum requirements.

Never mount the heater in such a way that

would position the heater above an opened

overhead door.

•In most cases the infiltration around your

uninsulated entry doors and windows will provide

enough air flow for efficient heater operation.

Unrestricted air flow during heater operation is essential

to prevent the area above the installed heater from

overheating. If your workshop/utility building is tightly

insulated (including windows, doors, openings, etc.) the

following ventilating methods must be followed:

•A single exhaust vent is supplied with your

heater for your convenience. This vent must be

located above the heater (preferably at the

highest point in the building interior) and it must

vent to the exterior of the building. An additional

vent is available from the factory for those having

a finished workshop or utility building.

•An intake vent, or equivalent, from the exterior of

the building and having an effective area of 75

square inches must be located below the heater

(preferably within 2 feet of the building’s floor).

•Openings equivalent to intake vent would be:

partially open doors and partially open windows.

•Openings of this size (5 inch by 13 inch, or 3

inch by 25 inch) will prevent dangerous heat

buildup above the heater.

Ensure that no gas lines or electrical wiring or conduits

will interfere with mounting of the heater to the wall.

Depending on local codes and requirements and the

installer’s skill level, the sizing and installation of gas

lines required to supply the heater may require the

assistance of a professional. If in doubt as to these

requirements, discuss the requirements of this manual

with the dealer from whom the heater was purchased

and your gas supplier, or call our customer service

department at 1-800-251-0001.

The selection of the thermostat mounting location is

critical to efficient and effective heater operation.

•The thermostat should be mounted about 5 feet

above the floor where air can circulate freely

around it.

•The thermostat should not be mounted directly

to a cold exterior wall without an insulated

mounting block.

•The thermostat should not be mounted in direct

drafts.

•The thermostat should not be mounted directly

below the installed the heater.

•The thermostat should not be installed at a

distance that is farther from the heater than the

length of the thermostat cable.

2. HEATER MOUNTING INSTRUCTIONS

After selecting the heater installation location and the

thermostat location and after verifying and ensuring that

all of the above placement requirements are fulfilled,

mount the heater as follows:

A. Determine how you wish to install the vent based on

the construction of the building and your personal

preference. (i.e., do you wish the flanged (finished)

side on the interior or the exterior of the building or

do you want two vents so that both exterior and

interior will be finished?) If needed, order an

additional vent from the factory. Our address and toll

free phone number are on the rear cover of this

manual. Install the vent as follows:

1. See Figure 3 for dimensions and information on

the vent.

2. Select a place as high above the heater as

possible in accordance with the above require-

ments and ensure that the vent or vents will not

contact or interfere with existing building sys-

tems (i.e., ducts, wiring, plumbing, etc.)

3. Place the unfinished side of the vent against the

wall in its elected location and trace its dimen-

sions on the wall with a pencil or other suitable

marker.

4. Cut or otherwise open a hole in the wall, or walls

for finished buildings, having the dimensions of

the unfinished side of the vent.

5. Install the vent or vents as desired and retain

with 4 suitable fasteners through the predrilled

holes in vent flange.

6Installation instructions and Owner’s Manual

Model # MH25NG/LP HS25NG/LP

B. Prepare to install the heater wall mounting bracket

as follows:

1. If the wall mounting bracket is to be attached to

a stud and wallboard wall, refer to Figure 3 for

dimensions, locate a stud, and drill two 1/8" pilot

holes into the stud centerline. Use template for

simplified installation.

2. If the wall mounting bracket is to be attached to

a brick or masonry wall, refer to Figure 3 for

dimensions. Obtain two 1/4 inch (inside

diameter)expansion anchors and determine the

correct drill size to be used with them. Drill

the appropriate size holes in the brick or ma-

sonry to accept the anchors.

C. Place the wall mounting bracket on the wall and

align the two through holes on the bracket with the

pilot holes or anchors. Install 1/4 inch by 2-1/2 inch

lag screws through the bracket into the stud or

anchors. Tighten securely.

D. Locate heater mounting clip on back of heater and

select the 1/4" – 20 by 3/4" hex head bolt and 1/4" -

20 hex nut.

E. Position the heater as shown in Figure 3 and slide

the heater mounting clip over the bracket and install

CEILING

HEATER

24” MIN

9”

58”

FLOOR

THERMOSTAT (SEE INSTRUCTIONS

INCLUDED WITH THERMOSTAT

#6 X 1” SHEET METAL SCREWS

(2 REQUIRED - INCLUDED WITH

THERMOSTAT)

THERMOSTAT CABLE

(SEE FIGURE 4)

1/4” X 2-1/2” LONG

LAG SCREWS

(2 REQUIRED)

GAS

CONTROL

VALVE

1/2” NPT GAS INLET

(DO NOT EXCEED 1/2 PSI)

HEATER

REFLECTOR

FLUE

DEFLECTOR

1/4”-20x3/4”

HEXHEAD BOLT

MOUNTING

CLIP

1/4”-20

HEX NUT

HEATER WALL

MOUNTING

BRACKET

PREDRILLED

HOLES

FINISHED

SIDE

UNFINISHED

SIDE

FLANGE

the bolt through the clip and bracket.

F. Thread the hex nut onto the bolt and tighten

securely.

G. Ensure that the selected thermostat location meets

all of the above requirements. Refer to the

instructions that come with the thermostat for

additional grounding information and mounting

instruction.

H. If the wall is of stud and wallboard construction, then

use the #6 by 1 inch sheet metal screws, included

with the thermostat, and mount the thermostat in the

selected location.

I. If wall is brick or masonry, the appropriate anchors

must be obtained to accommodate thermostat

mounting screws. Use the back plate of the

thermostat as a template to mark the hole locations,

drill appropriate size anchor holes, install the

anchors, securely attach the thermostat using the

mounting screws.

J. Connect thermostat wires to gas valve as shown in

Figure 4.

Figure 3. Heater Mounting Information

7Installation instructions and Owner’s Manual

Model # MH25NG/LP HS25NG/LP

LEAVE 2 THREADS BARE

USE MODERATE AMOUNT OF PIPE DOPE

3/4” MAXIMUM

THREAD LENGTH

1/2” BLACK PIPE

GAS VALVE BODY

1/2” MAXIMUM

DEPTH OF INSERTS

INTO GAS VALVE

Refer to National Electrical Code NFPA70-1993 and for

Canadian installations to current CODE C22.1-

3. CONNECTING HEATER TO GAS SUPPLY

WARNING: Depending on local codes and require-

ments and the installer’s skill level, the sizing and

installation of gas lines required to safely and efficiently

supply the heater may require the assistance of a

professional. If in doubt as to these requirements,

discuss the requirements of this manual with the dealer

from whom the heater was purchased and your gas

supplier.

3.1 Gas Supply Requirements

•See Tables 1 and 2 for gas supply minimum,

maximum, operating, and manifold pressures for

both heater models. Pressures are provided in

inches of W.C. (water column). Also, see heater

rating plates located on the heater.

WARNING: Model MH/HS25NG is designed to burn

natural gas and it comes equipped with a regulator. The

regulator is built into the gas valve. The maximum inlet

pressure to this regulator is 1/2 psi (14 in. W.C.) If gas

line pressure exceeds 1/2 psi, then an additional

regulator must be installed before the heater/regulator

to step down the pressure to a maximum of 1/2 psi.

•Most residential natural gas services provide a line

pressure of 4 oz. (6.9 in. W.C.). If in doubt consult

your natural gas supplier.

•To ensure the best performance from your natural

gas heater make sure the supply manifold pres-

sure is at least 6" W.C.

WARNING: Model MH/HS25LP is designed to burn

liquefied petroleum (LP) gas and it comes equipped

with a regulator. The regulator is built into the gas valve.

The maximum inlet pressure to this regulator is 1/2 psi

(14 in. W.C.). If gas line pressure exceeds 1/2 psi, then

an additional regulator must be installed before the

heater/regulator to step down the pressure to a maxi-

mum of 1/2 psi.

• To ensure the best performance from your LP gas

heater, make sure the supply manifold pressure is

at least 1/2 psi (14 in W.P.).

3.2 Piping Requirements

All piping installed must comply with local codes and

ordinances or with National Fuel Gas Code,

ANSI Z223.1 (NFPA 54), whichever takes precedence.

When installing piping, the following requirements must be

taken into consideration: Canadian installations must

comply with the B149.1.2 Gas Code.

•Use new properly reamed black pipe free from

chips.

•Apply a good quality pipe compound to all male

threads as shown in Figure 5 prior to assembly. If

LP gas is the fuel, ensure that pipe compound is

resistant to LP gas. Do not use Teflon™ tape.

Figure 5. Pipe Compound Application

•Male threads on pipe to be installed into gas valve

shall meet the requirements of Figure 6. Threads

longer than those shown in the figure may cause

gas valve distortion and malfunction.

•A sediment trap meeting the typical requirements

of Figure 7 shall be installed in the line to the gas

valve.

•A dedicated shutoff valve for the heater must be

installed in the gas supply line.

3.3 Piping Installation

While ensuring that all of the above gas supply require-

THERMOSTAT

POWERPILE GAS VALVE

POWERPILE GENERATOR

Figure 4. Connection Diagram

Figure 6. Gas Valve Connection Requirements

8Installation instructions and Owner’s Manual

Model # MH25NG/LP HS25NG/LP

ments and piping requirements are fulfilled, install piping

as follows:

A. In accordance with the above piping requirements,

assemble piping, sediment trap, shutoff valve, and

necessary fittings. Tighten all components securely.

WARNING: Failure to ensure that male threads on

pipe to be installed into gas valve meet the require-

ments of Figure 6 may cause gas valve damage,

distortion and malfunction.

B. Install a threaded nipple, prepared in accordance

with paragraph 3.2 into gas valve.

C. Connect gas piping to nipple installed in the gas

valve.

SUPPLY

LINE

SHUTOFF

VALVE

1/2”

TEE

3”

CAP

NIPPLE HEATER

RIGID PIPE WITH

UNION OR A FLEXIBLE

CONNECTOR TO HEATER

Figure 7. Typical Piping Installation

NOTE:

1. ONLY USE A PIPE COMPOUND

WHICH IS RESISTANT TO

LIQUIFIED GASES ON LP

INSTALLATIONS.

2. FITTINGS SHOWN ARE NOT

INCLUDED WITH HEATER.

WARNING: When testing gas piping use only a soap

and water solution. Do not use a match or other flame

for leak testing. If during leakage check gas is

smelled, turn off the gas supply and ventilate building.

D. Ensure the building is properly ventilated. Without

lighting the pilot light of the heater, open the gas

supply valve and pressurize the piping up to the

heater’s gas valve.

E. Using a brush, apply a soap and water solution to all

connections and look for bubbles indicating a leak. If

a leak is detected, turn off gas supply and tighten

connections. Retest and tighten connections until no

more leaks are found.

9Installation instructions and Owner’s Manual

Model # MH25NG/LP HS25NG/LP

MANUAL GAS

CONTROL KNOB

PILOTSTAT

POWER UNIT

PRESSURE

REGULATOR

ADJUSTMENT

STANDARD

PRESSURE

REGULATOR

PILOT GAS OUTLET

(PRESSURE TAPPING

DIRECTLY BENEATH)

PILOT FLOW ADJUSTING SCREW

(BENEATH COVER SCREW)

WRENCH

BOSS

GAS

INLET

Figure 9. Gas Valve Components

2. HEATER STARTUP

WARNING: During heater startup ensure that

building is well ventilated.

A. Open the gas supply valve or valves.

B. Set the thermostat to the OFF position.

See Figure 8.

C. If the manual gas control knob on the gas valve is

not in the OFF position, partially depress the knob

and rotate to the OFF position. See Figure 9.

CHAPTER III

HEATER OPERATING

INSTRUCTIONS

1. OPERATING SAFETY INSTRUCTIONS

WARNING: When used without fresh air, heater may

give off CARBON MONOXIDE, an odorless poison-

ous gas. OPEN WINDOW AN INCH OR TWO FOR

FRESH AIR WHEN USING HEATER.

WARNING: This heater is equipped with a PILOT

LIGHT SAFETY SYSTEM. DO NOT TAMPER WITH

PILOT LIGHT SAFETY SYSTEM.

WARNING: If heater shuts off, do not relight until you

provide fresh air. Open door for 5 minutes. If heater

keeps shutting off, have it serviced. Keep burner and

control clean.

WARNING: CARBON MONOXIDE POISONING MAY

LEAD TO DEATH. Early signs of carbon monoxide

poisoning resemble the flu with headache, dizziness

and/or nausea. If you have these signs, heater may

not be working properly. Get fresh air at once! Have

heater serviced.

WARNING: DO NOT USE MATCH OR OTHER

FLAME FOR LEAK TESTING.

CAUTION: If the infra-red color of the grid becomes

dull when the building furnace is operating, consult

gas supplier on correct gas supply piping sizes.

CAUTION: This heater is for indoor installation only!

NOTE

Gasket binder material used in this heater assembly

will temporarily emit an odor and/or vapor. This condi-

tion will clear up in approximately 20 minutes and

thereafter will not reoccur. Refer to Chapter 2 for

ventilation.

FIGURE 8. THERMOSTAT CONTROLS

10 Installation instructions and Owner’s Manual

Model # MH25NG/LP HS25NG/LP

PILOT BURNER

LIGHT PILOT WITH MATCH

AS SHOWN

GAS VALVE

DEPRESS TO

LIGHT

D. Wait 5 minutes to allow gas that may have

accumulated in the main burner to escape

(especially important after installation).

E. Turn the manual gas control knob to the PILOT

position.

F. Depress the manual gas control knob. Using a

match, light the pilot light. See Figure 10. Hold the

knob down for approximately 30 seconds to allow

any air in gas lines to pass through pilot and, once

pilot is lit, allow the thermocouple to heat up enough

to activate the safety valve in an open position.

G. Release manual gas control knob and turn to ON.

H. Reset thermostat to desired temperature.

NOTE

During the initial startup of heater, an odor and,

perhaps, some vapor will come from the heater. This

is the gasket binding material emitting this odor and/

or vapor. After approximately 20 minutes, this odor will

disappear and not occur again.

3. HEATER SHUTDOWN

A. Turn thermostat to OFF.

B. Turn manual gas control knob on gas valve to PILOT

position.

C. Partially depress knob and rotate to the OFF

position.

D. Close gas supply valves.

Figure 10. Lighting of Pilot Burner

11 Installation instructions and Owner’s Manual

Model # MH25NG/LP HS25NG/LP

CHAPTER IV

OPERATOR MAINTENANCE

INSTRUCTIONS

1. TROUBLESHOOTING

A. Table 4 lists the common malfunctions which you may

find during the operation or maintenance of your heater.

B. For additional information, refer to Honeywell Field

Bulletin enclosed in the heater carton.

C. In the event results cannot be obtained after performing

all listed solutions, call the factory.

2. ADJUSTING THE PILOT FLAME

The pilot flame should envelop 3/8 to 1/2 in. (10 to 13

mm) of the tip of the thermocouple or generator.

Refer to Figure 11. To adjust:

MANUAL GAS

CONTROL KNOB

WRENCH

BOSS

GAS

INLET

PILOTSTAT

POWER UNIT

PRESSURE REGULATOR ADJUSTMENT

(BENEATH COVER SCREW)

PILOT FLOW ADJUSTING SCREW

(BENEATH COVER SCREW)

INSTALL LONG

SCREW IN

OUTSIDE CORNER

PILOT GAS OUTLET

(PRESSURE TAPPING

DIRECTLY BENEATH)

STANDARD

PRESSURE

REGULATOR

(“A” MODEL)

STEP OPENING REGULATOR

(“C” MODEL)

Figure 12. Top View of Standard Capacity Gas Control

3/8 TO 1/2 INCH

(10-13 MILLIMETERS)

THERMOCOUPLE

PROPER FLAME

ADJUSTMENT

Figure 11. Proper Flame Adjustment

A. Remove pilot adjustment cover screw. Refer to

Figure 12.

B. Turn inner adjustment screw clockwise to

decrease or counterclockwise to increase

pilot flame.

C. Always replace cover screw after adjustment and

tighten firmly to ensure proper operation.

12 Installation instructions and Owner’s Manual

Model # MH25NG/LP HS25NG/LP

Table 4. Trouble Shooting Chart

Below in chart form are various symptoms of a malfunctioning system, possible defects that will cause these symptoms

and suggested corrective measures. The chart assumes that the proper gas pressure is available to the heater and that

the lighting procedure is as stated on the plate attached to the heater.

SYMPTOMS CAUSES SOLUTIONS

burner light off very slow partially block pilot orifice replace

pilot out of adjustment re-adjust pilot

burner light off very slow infra-red partially blocked burner orifice replace

color stays dull

burner flash back low gas pressure correct line pressure

(roaring noise during operation or call your gas supplier

and ceramic grid surface will be

dark) damaged burner replace

ceramic grid or burner sooting up first check for damaged burner replace if damaged

(when new or after cleaning) orifice

if burner orifice is not damaged replace

then check for damaged manifold

pilot cannot be ignited blocked pilot orifice replace

gas cock not in position gas cock knob must be

turned to pilot and held

depressed

pilot gas flow adjustment open and adjust

screw may be closed (see Figure 12)

pilot lights but goes out defective thermocouple replace

defective control replace

pilot stays lit but main burner loose wire or improperly wired tighten connections, check

will not light wiring diagram

defective control replace

blocked burner orifice clean orifice or replace

failure to ignite main gas off open manual valves

air in gas line bleed gas line

loose wire connections tighten wire connections

dirty wire connections clean terminals and secure

terminals

3. REPLACING THE GAS VALVE UNIT

A. Remove the two gas valve unit wires at the gas

control valve labeled “PP”.

B. Unscrew gas valve from gas piping.

C. Reconnect gas valve and unit wires to terminals

“PP”. Be sure to leave thermostat wire on one

terminal.

4. FREQUENCY OF OPERATOR CHECKS

Intermittent use. Appliances that are used seasonally

should be checked before shutdown and again before the

next use.

Dusty, wet or corrosive environment. Since these

environments can cause the gas control to deteriorate

more rapidly, the system should be checked more often.

The gas control should be replaced if:

A. It does not perform properly on checkout or trouble

shooting.

B. The gas control knob Is hard to turn or push down, or

it fails to pop back up when released.

13 Installation instructions and Owner’s Manual

Model # MH25NG/LP HS25NG/LP

IF SERVICE IS REQUIRED

PLEASE DO NOT RETURN THIS APPLIANCE TO YOUR STORE

For information regarding service, please call our Toll-Free Number:

1-800-251-0001.

Our office hours are 8:30 AM – 5:00 PM, Eastern Time Zone

Monday through Friday

Please include the model number, date of purchase, and description of

problem in all communication.

CHAPTER V

REPLACEMENT PARTS LIST

1.INTRODUCTION

This section of the manual will help you to obtain

efficient and dependable service from your heater and

enable you to order repair parts correctly.

A. Order parts by giving full model number and serial

number as it is stated on the name place attached

to the heater.

B. See Figure 13 to assist in locating parts.

C. Refer to Table 5 for part number and description.

2.WARRANTY

Enerco Group, Inc. warrants that Infra-Red Heaters

manufactured and sold will be free from defects in

material and workmanship.

Parts, assemblies, controls, etc. furnished by EGI

suppliers will carry a one (1) year warranty from date of

purchase.

The sole responsibility of EGI under this warranty shall be

to replace any part for which a written claim is made to

EGI WITHIN THE TIME LIMIT OF THIS WARRANTY,

WHICH IS RETURNED UPON REQUEST TO EGI –

F.O.B. Cleveland, Ohio – OR F.O.B. an EGI authorized

service facility and which is proved to be defective upon

inspection by EGI.

This warranty shall not apply to any part or product which

has been subjected to misuse or neglect, damaged by

accident, or rendered defective by reason of improper

installation. THIS WARRANTY IS IN LIEU OF ANY AND

ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED,

and of any other responsibility of EGI for parts or products

sold by EGI, including consequential or special damages.

14 Installation instructions and Owner’s Manual

Model # MH25NG/LP HS25NG/LP

11 12

19 18

Table 5. Replacement Parts List for Heater Models MH/HS25NG and MH/HS25LP

ITEM NO. STOCK NO. DESCRIPTION ITEM NO. STOCK NO. DESCRIPTION

1 02529A Burner Assembly Complete 12 05455 Orifice-Burner-Propane Gas

2 00377A Reflector Assembly 13 05576 Orifice-Pilot-Natural Gas

3 01357 Flue Deflector 14 05573 Orifice-Pilot-Propane Gas

4 16451 Pilot Tube 15 10358 Thermostat Cable

5 00024 Gas Valve-Natural Gas 16 11406 Pilot Burner N/G

6 00025 Gas Valve-Propane Gas 17 11405 Pilot Burner L/P

7 10367 Thermostat 18 04435A Grid Replacement

8 14405 Wall Mounting Bracket 19 12369 Gasket

9 04432 Face Guard 20 05354 Jamb Nut

10 09360 Thermocouple/Generator 21 05351 Connector

11 05445 Orifice-Burner-Natural Gas 22 98593 3/8” Close Nipple

23 19014 Intake Louver

ALL WARRANTY CLAIMS REQUIRE PROOF OF PURCHASE

15 Installation instructions and Owner’s Manual

Model # MH25NG/LP HS25NG/LP

ANSI Z83.6b-1993

ENERCO GROUP, INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135

216-916-3000 Toll Free Number 1-800-251-0001

www.mrheater.com

Mr. Heater is a registered trademark of Enerco Group, Inc.

WARRANTY INFORMATION

Keep this warranty

Model ______________________

Serial No. ___________________

Date Purchased _______________

Always specify model and serial numbers when communication with the factory.

We reserve the right to amend these specifications at any time without notice. The only warranty applicable

is our standard written warranty. We make no other warranty, expressed or implied.

Enerco Group, Inc. warrants this product to be free from defects in materials and components for two (2)

years from the date of first purchase, provided that the product has been properly installed, operated and

maintained in accordance with all applicable instructions. To make a claim under this warranty the Bill of

Sale or cancelled check must be presented.

The warranty is extended only to the original retail purchaser. This warranty covers the cost of part(s)

required to restore the heater to proper operating condition and an allowance for labor when provided by an

Enerco Group, Inc. Authorized Service Center. Warranty part(s) MUST be obtained through authorized

dealers of this product and/or Enerco Group, Inc. who will provide original factory replacement parts. Failure

to use original factory parts voids this warranty. The heater MUST be installed by a qualified installer in

accordance with all local codes and instructions furnished with the unit.

This warranty does not apply to parts that are not in original condition because of normal wear and tear of

parts that fail or become damaged as a result of misuse, accidents, lack of proper maintenance or defects

caused by improper installation. Travel, diagnostic cost, labor, transportation and any and all such costs

related to repairing a defective heater will be the responsibility of the owner.

TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE

OF THE PRODUCT; THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED

WARRANTIES AND LIMITS THE DURATION OF ANY AND ALL IMPLIED WARRANTIES OF MERCHANT-

ABILITY AND FITNESS FOR A PARTICULAR PURPOSE, TO TWO (2) YEARS OF ALL COMPONENTS

FROM THE FIRST DATE OF PURCHASE; AND ENERCO GROUP, INC.’S LIABILITY IS HEREBY LIMITED

TO THE PURCHASE PRICE OF THE PRODUCT AND ENERCO GROUP, INC. SHALL NOT BE LIABLE

FOR ANY OTHER DAMAGES WHATSOEVER INCLUDING INDIRECT, INCIDENTAL OR CONSEQUEN-

TIAL DAMAGES.

Some states do not allow a limitation on how long an implied warranty lasts or an exclusion or limitation on

incidental or consequential damages, so the above limitation on implied warranties, or limitation on dam-

ages, may not apply to you.

This warranty gives you specific legal rights, and you may also have other rights that very from state to

state. Always specify model and serial number when communication with the factory.

CAN 1-2.16-M81

16 Installation instructions and Owner’s Manual

Model # MH25NG/LP HS25NG/LP

ANSI Z83.6b-1993

ENERCO GROUP, INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135

216 916-3000 Numéro sans frais 1 800 251-0001

www.mrheater.com

Mr. Heater est une marque déposée d’Enerco Group, Inc.

RENSEIGNEMENTS SUR LA GARANTIE

Conservez cette garantie

Modèle ______________________

Numéro de série ___________________

Date de l’achat _______________

Précisez toujours le modèle et le numéro de série dans vos communications avec l’usine.

Nous nous réservons le droit de modifier ces spécifications en tout temps sans préavis. La seule garantie

applicable est notre garantie écrite standard. Nous n’offrons aucune autre garantie, expresse ou implicite.

Enerco Group, Inc. garantit ce produit contre tout défaut de matériel et de fabrication pour une période de

deux (2) ans à partir de la date de l’achat initial, à la condition que ce produit ait été correctement installé,

utilisé et entretenu conformément aux directives applicables. Pour faire une réclamation en vertu de cette

garantie, un contrat de vente ou un chèque annulé doit être présenté.

La garantie ne protège que l’acheteur initial auprès du détaillant. Cette garantie couvre le coût de la ou des

pièces requises pour rétablir le bon fonctionnement du radiateur et, s’il y a lieu, celui de la main-d’œuvre du

centre de réparations autorisé par Enerco Group, Inc.. Les pièces garanties DOIVENT être obtenues

auprès des détaillants autorisés de ce produit et/ou d’Enerco Group, Inc., qui fournira les pièces de

rechange originales de l’usine. Le défaut d’utiliser des pièces originales de l’usine aura pour effet d’annuler

cette garantie. Le radiateur DOIT être installé par un installateur qualifié conformément à tous les codes

locaux et à la notice d’installation fournie avec l’appareil.

Cette garantie ne s’applique pas aux pièces soumises à une usure normale ni aux pièces défectueuses

ou endommagées en raison d’un usage abusif, d’un accident, ou bien d’un entretien inadéquat ou d’une

mauvaise installation. Les frais de déplacement, de diagnostic, de main-d’œuvre et de transport, ainsi que

toutes les dépenses reliées à la réparation d’un radiateur défectueux seront à la charge du propriétaire.

AVEC TOUTE LA RIGUEUR DE LA LOI DU TERRITOIRE GOUVERNANT LA VENTE DU PRODUIT,

CETTE GARANTIE EXPRESSE EXCLUT TOUTE AUTRE GARANTIE EXPRESSE ET LIMITE LA DURÉE

DE TOUTES LES GARANTIES IMPLICITES DE QUALITÉ MARCHANDE ET D’APTITUDE À L’USAGE À

DEUX (2) ANS POUR TOUS LES COMPOSANTS À PARTIR DE LA DATE DU PREMIER ACHAT; ET LA

RESPONSABILITÉ D’ENERCO GROUP, INC. EST PAR LA PRÉSENTE LIMITÉE AU PRIX D’ACHAT DU

PRODUIT; ENERCO GROUP, INC. NE SERA RESPONSABLE D’AUCUN AUTRE DOMMAGE INDIRECT,

ACCESSOIRE OU CONSÉCUTIF.

Certaines province ou certains États ne permettent pas une limite de durée de garantie implicite ni une

exclusion ou une limitation sur les dommages accessoires et consécutifs; ainsi, il est possible que la limite

ci-dessus sur les garanties implicites ou sur les dommages ne s’applique pas à vous.

La présente garantie vous accorde des droits juridiques précis, et vous pourriez également avoir d’autres

droits qui varient selon la province ou l’État. Précisez toujours le modèle et le numéro de série dans vos

communications avec l’usine.

CAN 1-2.16-M81

16 Notice d’installation et guide d’utilisation

Modèle n° MH25NG/LP HS25NG/LP

11 12

19 18

Tableau 5 Liste des pièces de remplacement pour les modèles de radiateurs

MH/HS25NG et MH/HS25LP

N° D’ARTICLE N° DE NOMEN- DESCRIPTION N° D’ARTICLE N° DE NOMEN- DESCRIPTION

CLATURE CLATURE

1 02529A Ensemble complet de 12 05455 Orifice-brûleur-gaz propane

brûleur

2 00377A Ensemble de réflecteur 13 05576 Orifice-veilleuse-gaz naturel

3 01357 Déflecteur de gaz de 14 05573 Orifice-veilleuse-gaz propane

combustion

4 16451 Tube de veilleuse 15 10358 Câble du thermostat

5 00024 Soupape de gaz-gaz 16 11406 Veilleuse GN naturel

7 10367 Thermostat 18 04435A Grille de rechange

8 14405 Support mural 19 12369 Joint d’étanchéité

9 04432 Grille de protection 20 05354 Contre-écrou

10 09360 Thermocouple/générateur 21 05351 Connecteur

11 05445 Orifice-brûleur-gaz naturel 22 98593 Raccord simple 3/8 po

23 19014 Évent à lames

TOUTES LES RÉCLAMATIONS EN VERTU DE LA GARANTIE REQUIÈRENT UNE

PREUVE D’ACHAT

Notice d’installation et guide d’utilisation

Modèle n° MH25NG/LP HS25NG/LP 15

SI UNE RÉPARATION EST NÉCESSAIRE

NE RETOURNEZ PAS CET APPAREIL À VOTRE MAGASIN

Pour plus de renseignements sur les réparations, veuillez appeler notre

numéro sans frais : 1 800 251-0001.

Nos heures d’ouverture sont de 8 h 30 à 17 h, HE,

du lundi au vendredi

Veuillez inclure le numéro de modèle, la date de l’achat et la description du

problème dans toutes vos communications.

CHAPITRE V

LISTE DES PIÈCES DE RECHANGE

1. INTRODUCTION

La présente section du manuel vous aidera à obtenir un

rendement fiable et efficace de votre radiateur et à

commander les pièces correctement.

A. Pour commander les pièces, indiquez le numéro

complet du modèle et le numéro de série indiqués

sur la plaque signalétique du radiateur.

B. Consultez la figure 13 pour repérer les pièces.

C. Reportez-vous au tableau 5 pour le numéro et la

description des pièces.

2. GARANTIE

Enerco Group, Inc. garantit les radiateurs à infrarouge

fabriqués et vendus contre les défauts de matériel et de

fabrication.

Les pièces, les ensembles, les commandes, etc.,

fournis par les fournisseurs d’EGI comportent une

garantie d’un (1) an à partir de la date d’achat.

En vertu de cette garantie, la seule responsabilité d’EGI

consiste à remplacer toute pièce pour laquelle une

réclamation écrite est soumise à EGI DURANT LA

PÉRIODE DE GARANTIE, CETTE PIÈCE DEVANT

ÊTRE RETOURNÉE SUR DEMANDE À EGI – FOB à

Cleveland, en Ohio – OU FOB à un centre de réparations

EGI autorisé, si EGI détermine après inspection que la

pièce est défectueuse.

Cette garantie ne protège aucunement une pièce ou

un produit négligés ou dont on a fait un usage abusif,

accidentellement endommagés ou défectueux en

raison d’une mauvaise installation. CETTE GARANTIE

REMPLACE TOUTE AUTRE GARANTIE EXPRESSE OU

IMPLICITE, et toute autre responsabilité d’EGI en regard

des pièces ou des produits vendus par EGI, incluant les

dommages consécutifs ou spéciaux.

14 Notice d’installation et guide d’utilisation

Modèle n° MH25NG/LP HS25NG/LP

Tableau 4. Tableau de dépannage

Le tableau suivant présente différents symptômes d’un système défectueux, les causes possibles de ces symptômes et

les mesures correctives suggérées. Le tableau suppose que la pression du gaz combustible est appropriée et que la

procédure d’allumage est conforme à celle indiquée sur la plaque rattachée au radiateur.

SYMPTÔMES CAUSES SOLUTIONS

allumage très lent de la veilleuse obturation partielle de l’orifice de la remplacer

veilleuse, veilleuse mal réglée régler de nouveau la veilleuse

allumage très lent de la veilleuse, obturation partielle de l’orifice de la remplacer

I la couleur de l’infrarouge veilleuse

demeure terne

retour de flamme du brûleur pression insuffisante du gaz corriger la pression dans la conduite

(fonctionnement bruyant du ou appeler le fournisseur en gaz

radiateur et la surface de la

grille en céramique est sombre)

brûleur endommagé remplacer

grille en céramique ou brûleur vérifier d’abord si l’orifice du brûleur remplacer si endommagé

noirs de suie (alors qu’ils sont est endommagé

neufs ou viennent d’être nettoyés) si l’orifice du brûleur n’est pas remplacer

endommagé vérifier si le collecteur

est endommagé

impossible d’allumer la veilleuse orifice de la veilleuse bloqué remplacer

robinet de gaz pas en position le bouton du robinet doit être

tourné à PILOT et tenu enfoncé

la vis de réglage du débit de gaz à ouvrir et régler

la veilleuse est peut-être fermée (voir la figure 12)

la veilleuse s’allume puis s’éteint thermocouple défectueux remplacer

commande défectueuse remplacer

la veilleuse demeure allumée fils de raccordement relâchés ou serrer les connexions, vérifier

mais le brûleur principale inadéquats mais le brûleur principal

ne s’allume pas le schéma de câblage

commande défectueuse remplacer

orifice du brûleur bloqué nettoyer l’orifice ou remplacer

allumage impossible gaz secteur coupé ouvrir les robinets manuels

air dans la conduite de gaz purger la conduite de gaz

fils de raccordement relâchés serrer les fils de raccordement

fils de raccordement encrassés nettoyer et serrer les bornes

3. REMPLACEMENT DE LA SOUPAPE DE GAZ

A. Déposez les deux fils étiquetés «PP» à la soupape

de gaz.

B. Dévissez la soupape de gaz du tuyau.

C. Reconnectez la soupape de gaz et les fils de la

soupape aux bornes «PP». Assurez-vous de laisser

le fil du thermostat sur une borne.

4. FRÉQUENCE DES INSPECTIONS PAR

L’UTILISATEUR

Usage intermittent. Les appareils utilisés sur une base

saisonnière doivent être inspectés avant leur mise à l’arrêt

et avant leur mise en fonction à la saison suivante.

Environnement poussiéreux, humide ou corrosif.

Puisque ce type d’environnement peut entraîner une

détérioration rapide de la commande de gaz, le système

doit être inspecté plus souvent.

La commande de gaz doit être remplacée si :

A. Elle ne fonctionne pas correctement lors de

l’inspection ou du dépannage.

B. Il est difficile de tourner ou d’enfoncer le bouton

de la commande de gaz, ou si le bouton ne

remonte pas lorsque relâché.

Notice d’installation et guide d’utilisation

Modèle n° MH25NG/LP HS25NG/LP 13

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