MrHeater MH25NG Assembly instructions

GAS FIRED INFRA-RED WORKSHOP HEATER
MR. HEATER INC., 4560 W. 160TH 2017 18672
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.
OPERATING INSTRUCTIONS Model #
MH25NG
MH25LP
WARNING:
- WHAT TO DO IF YOU SMELL GAS
WARNING
WARNING
MR. HEATER, INC., 4560 W. 160TH 2017 18672

E2 Installation instructions and Owner’s Manual
Mr. Heater / Infrared Workshop Heater
WARNINGS
WARNING
WARNING: When used without fresh air, heater
WARNING
WARNING
DANGER
Carbon Monoxide Poisoning:
CAUTION
WARNING:
The State of California requires the following
warning:
TABLE OF CONTENTS
Chapter Title Page
I Introduction E3
II Heater Installation
LANGUAGES

E3 Installation instructions and Owner’s Manual
Mr. Heater / Infrared Workshop Heater
VALVE
1. EQUIPMENT
Figure 1. Heater Major Components
2. PURPOSE OF EQUIPMENT
WARNINGS
CHAPTER I
INTRODUCTION

E4 Installation instructions and Owner’s Manual
Mr. Heater / Infrared Workshop Heater
3. GENERAL INFORMATION
• The installation of the heater must conform
•
WARNING:
•
manual:
Number Related Subject
DO NOT EXCEED 1/2 PSI INLET PRESSURE TO HEATER
WARNING:
Table 1. BTU Ratings and Supply Pressures

Installation instructions and Owner’s Manual
Mr. Heater / Infrared Workshop Heater
1. GENERAL INSTALLATION INFORMATION
AND REQUIREMENTS
EXHAUST
VENT CEILING
14”
MINIMUM
16”
MINIMUM
48”
MINIMUM
OPEN
WORKSHOP DOOR
HEATER
WALL BRACK-
ET
16”
MINIMUM
14-1/2”
FLOOR LINE
30
o
Figure 2. Installation Clearances to Combustible Surfaces
Table 3. Installation, Ventilation and Mounting Information
o
o
CHAPTER II
HEATER INSTALLATION

Installation instructions and Owner’s Manual
Mr. Heater / Infrared Workshop Heater
•
•
minimum clearances or contact any heater
•
•
uninsulated entry doors and windows will
must
•
•
•
•
•
•
to a cold exterior wall without an insulated
•
•
•
distance that is farther from the heater than the
2. HEATER MOUNTING INSTRUCTIONS
mount the heater as follows:
the wall in its elected location and trace its

Installation instructions and Owner’s Manual
Mr. Heater / Infrared Workshop Heater
as follows:
3 for dimensions, locate a stud, and drill two
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” HEX-
HEAD BOLT
MOUNTING
CLIP
1/4”-20
HEX NUT
HEATER WALL
MOUNTING
BRACKET
PREDRILLED
HOLES
FINISHED
SIDE
UNFINISHED
SIDE
FLANGE
the instructions that come with the thermostat for
included with the thermostat, and mount the
Figure 3. Heater Mounting Information

E8 Installation instructions and Owner’s Manual
Mr. Heater / Infrared Workshop Heater
3.2 Piping Requirements
•
•
Figure 5. Pipe Compound Application
•
•
•
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 IN-
SERTS INTO GAS
VALVE
3. CONNECTING HEATER TO GAS SUPPLY
WARNING:
3.1 Gas Supply Requirements
•
WARNING:
•
•
WARNING:
Figure 4. Connection Diagram
Figure 6. Gas Valve Connection Requirements
POWERPILE GAS VALVE
POWERPILE GENERATOR
WIRE
SIZES
MAXIMUM
LENGTH
2 WIRE
CABLE
NO. 18
NO. 16
NO. 14
15 FEET
30 FEET
50 FEET
CAUTION:
Never connect powerpile gas
valve or thermostat to line voltage
or a transformer
Factory Wired
Thermostat Wires

Installation instructions and Owner’s Manual
Mr. Heater / Infrared Workshop Heater
3.3 Piping Installation
WARNING: Failure to ensure that male threads
SUPPLY
LINE
SHUTOFF
VALVE
1/2”
TEE
3”
CAP
NIPPLE HEATER
RIGID PIPE WITH
UNION OR A FLEXIBLE CON-
NECTOR 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:

Installation instructions and Owner’s Manual
Mr. Heater / Infrared Workshop Heater
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:
CHAPTER III
HEATER OPERATING
INSTRUCTIONS
1. OPERATING SAFETY INSTRUCTIONS
WARNING: When used without fresh air, heater
WARNING
WARNING:
WARNING: CARBON MONOXIDE POISONING
MAY LEAD TO DEATH.
WARNING: DO NOT USE MATCH OR OTHER
FLAME FOR LEAK TESTING.
CAUTION
CAUTION: This heater is for indoor installation
NOTE

Installation instructions and Owner’s Manual
Mr. Heater / Infrared Workshop Heater
PILOT BURNER
LIGHT PILOT WITH MATCH
AS SHOWN
GAS VALVE
DEPRESS TO
LIGHT
NOTE
3. HEATER SHUTDOWN
Figure 10. Lighting of Pilot Burner

Installation instructions and Owner’s Manual
Mr. Heater / Infrared Workshop Heater
CHAPTER IV
OPERATOR MAINTENANCE
INSTRUCTIONS
1. TROUBLESHOOTING
2. ADJUSTING THE PILOT FLAME
MANUAL GAS
CONTROL KNOB
WRENCH
BOSS
GAS
INLET
PILOTSTAT POW-
ER 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
to
to increase

Installation instructions and Owner’s Manual
Mr. Heater / Infrared Workshop Heater
Table 4. Trouble Shooting Chart
SYMPTOMS CAUSES SOLUTIONS
stays dull
-Loose wire connections
-Dirty wire connections
3. REPLACING THE GAS VALVE UNIT
4. FREQUENCY OF OPERATOR CHECKS
Intermittent use
Dusty, wet or corrosive environment. Since these

Installation instructions and Owner’s Manual
Mr. Heater / Infrared Workshop Heater
IF SERVICE IS REQUIRED
PLEASE DO NOT RETURN THIS APPLIANCE TO YOUR STORE

Installation instructions and Owner’s Manual
Mr. Heater / Infrared Workshop Heater
7
6
5
15
4
14
13
10
17
16
22
21
8
20
11 12
13
19 18
2
9
23
CHAPTER V
REPLACEMENT PARTS LIST
STOCK NO DESCRIPTION DESCRIPTION
2
3
4
Thermostat
8
Face Guard
22
23
OPTIONAL CONVERSION KITS
DESCRIPTION DESCRIPTION
F200293 NG to LP CONVERSION F200294 LP to NG CONVERSION
OPTIONAL DECORATIVE GRID KIT
DESCRIPTION DESCRIPTION
F204435 Grid Kit (Grid, Screws,Retention Clip) F204436 Retro Fit Grid Kit (Reflector, Grid, Screws, Retention Clip)
ALL WARRANTY CLAIMS REQUIRE PROOF OF PURCHASE

WARNING:
COULD CAUSE INJURY OR DEATH. REPLACEMENT PARTS ARE ONLY AVAILABLE
DIRECT FROM THE FACTORY AND MUST BE INSTALLED BY A QUALIFIED SERVICE
AGENCY.
Contact your local heating service technician or dealer.
Please have the model number, serial number and date of purchase ready.
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 Company,
for a period of one year from the date of delivery to the buyer. The Company, at 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.
Address any Warranty Claims to the Customer Service Department, Mr. Heater, 4560 W.
160TH ST., CLEVELAND, OHIO 44135. Include your name, address and telephone number and
include details concerning the claim. Also, supply us with the purchase date and the name
and address of the dealer from whom you purchased our product.
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 and there is no warranty of merchantability. In no event shall the Company be liable
for delay caused by imperfections, for consequential damages, or for any charges of the
expense of any nature incurred without its written consent. The cost of repair or replacement
shall be the exclusive remedy for any breach of warranty. There is no warranty against
infringement of the like and no implied warranty arising from course of dealing or usage of
trade. This warranty will not apply to any product which has been repaired or altered outside
of the factory in any respect which in our judgment affects its condition or operation.
Some states do not allow the exclusion or limitation of incidental or consequential damages,
so the above limitation or exclusion may not apply to you. This Warranty gives you specific
legal rights, and you may have other rights which vary from state to state.
© 2017, Mr. Heater. All rights reserved
Mr. Heater reserves the right to make changes at any time, without notice or
obligation, in colors, specifications, accessories, materials and models.
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.
OPERATING INSTRUCTIONS
MH25NG
MH22LP
Model #

CALENTADOR INFRARROJO A GAS PARA TALLER
MR. HEATER INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 1-800-251-0001 2017 18672
Modelo
MH25NG
MH25LP
INSTRUCCIONES DE USO Y
MANUAL DEL USUARIO
Instalador: Deje este manual junto con el artefacto. Consumidor: Conserve este manual en caso de que necesite consultarlo en un futuro.
Lea y siga todas las instrucciones. Guarde las instrucciones
en un lugar seguro en caso de que necesite consultarlas en un futuro. No permita que nadie que no haya
leído estas instrucciones ensamble, encienda, ajuste u opere el calentador.
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Installation instructions and Owner’s Manual
Mr. Heater / Infrared Workshop Heater
ADVERTENCIAS
ADVERTENCIA
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ADVERTENCIA: Este calentador tiene un
ADVERTENCIA
PELIGRO
Intoxicación por monóxido de carbono:
AVISO
ÍNDICE
Capítulo Título Página
S3
III Instrucciones de funcionamiento del
calentador
ADVERTENCIA:
El Estado de California exige la publicación de la
siguiente advertencia:
CALIFORNIA RECONOCE COMO CAUSANTE DE
OTROS DAÑOS REPRODUCTIVOS).
IDIOMAS
• ESPAÑOL:

Installation instructions and Owner’s Manual
Mr. Heater / Infrared Workshop Heater
DE GAS
1. EQUIPO 2. FINALIDAD DEL EQUIPO
ADVERTENCIAS
CAPÍTULO I
INTRODUCCIÓN

Installation instructions and Owner’s Manual
Mr. Heater / Infrared Workshop Heater
3. INFORMACIÓN GENERAL
•
en la Tabla 1 y 2:
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•
visite www.mrheater.com
Número Tema relacionado
NO SUPERE LA PRESIÓN DE ENTRADA DE 1/2 PSI AL
CALENTADOR
ADVERTENCIA:
Tabla 1. Índices en BTU y presiones de suministro
MODELO