Gas Fired Products Electric Heater HS125LP User Manual

OPERATING INSTRUCTIONS AND OWNER’S MANUAL  
READ INSTRUCTIONS CAREFULLY: Read and  
MR. HEATER  
HEATSTAR  
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.  
MH125LP  
HS125NG, HS125LP  
RED INFRA-RED  
BLE CONSTRUCTION HEATER  
E HEATER UNATTENDED OR IN OPERATION WHILE SLEEPING  
T INCLUDED  
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 COMBUSTIBLES OR PRODUCTS SUCH AS GASOLINE, SOLVENTS,  
PAINT THINNER, DUST PARTICLES OR UNKNOWN CHEMICALS.  
WARNING: NOT FOR HOME OR RECREATIONAL VEHICLE USE  
ENERCO GROUP, INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 • 216-881-5500  
04/04 Revision L1 #18666  
 
INSTALLATION INSTRUCTIONS  
GENERAL:  
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.  
PIPING  
For Model MH125LP/HS125LP  
(for use with LP-Gas)  
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.  
DO NOT attempt to operate the heater with any gas other  
than that indicated on the heater nameplate.  
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 if the hose is cut, it must be replaced prior to the  
heater being put into operation.  
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 (for Natural and LP-Gas operation,  
Models HS125NG, MH125LP, and HS125LP), and with  
the (U.S) Standard for the Storage and Handling of  
Liquefied Petroleum Gases, ANSI/NFPA 58 (for LP Gas  
operation, Model MH125LP, HS125LP), or  
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 pounds capacity of  
LP-Gas. DO NOT connect this appliance to more than one  
(1) 100 pound cylinder.  
with the current (Canadian) CAN/CGA B149.1 AND  
B149.2 INSTALLATION CODES.  
This heater (including hose and regulator assembly if applicable)  
must be inspected before each use and at least annually by a  
qualified service person. If the hose for Model MH125LP/HS125LP  
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.  
WARNING  
NEVER USE A FORK LIFT TRUCK TYPE  
CYLINDER.  
The connection of Model MH125LP/HS125LP to an LP-Gas  
cylinder must be made in a well ventilated area using the  
regulator and hose assembly supplied with the appliance. DO  
NOT attempt to adjust this regulator. It has been preset at  
the factory to provide safe and proper operation of the  
appliance. Use a 7/8” open end wrench to connect the POL  
fitting (supplied with the LP regulator) to the LP-Gas cylinder.  
Turn the POL nut in a counter-clockwise direction (left hand  
thread) until tight. DO NOT use pipe compound  
on POL threads.  
LOCATION  
The heater (and LP-Gas supply cylinder if applicable) must be  
located on a hard, flat, level surface to minimize the risk of  
accidental tipping. If an LP Gas supply cylinder is used (i.e. with  
Model MH125LP/HS125LP), the 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.  
The heater must be located at least six feet away from any  
LP-Gas cylinder and must not be directed toward any LP-Gas  
cylinder within 20 feet. If more than one heater is used,  
they and the supply cylinders must be separated by at least  
20 feet.  
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.  
The gas supply must be turned off at the LP-Gas supply  
cylinder when the heater is not in use.  
When the heater is to be stored indoors, the connection  
between the LP-Gas supply cylinder and the heater must be  
disconnected and the cylinder removed from the heater and  
stored in accordance with Chapter 5 of the Standard for the  
Storage and Handling of Liquefied Petroleum Gases. ANSI/  
NFPA 58 (U.S.) OR CAN/CGA B149.2 (Canada).  
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 decreases its efficiency.  
If possible, operate the unit in a draft free area.  
If connected to a permanently installed LP-Gas supply  
system, the system requires the use of a two-stage gas  
regulator assembly which is normally provided by your LP  
Gas dealer as part of the LP-Gas supply system. Consult  
with your local LP Gas dealer for details concerning proper  
equipment and installation.  
Enerco Group, Inc. | Gas-Fired Infra-Red Portable Construction Heater  
Operating Instructions and Owner’s Manual  
3
 
This appliance must be installed and operated only in locations  
where the potential for physical damage to the appliance is  
reduced to a minimum. The owner/operator of this appliance  
must ensure that precautions are taken to protect the appliance  
from physical damage.  
For Model 125NG (for use with natural gas)  
Piping must be clean and free from scale or burrs.  
Install regulator supplied with heater. Connect with 1/2”  
NPT nipple (not included) to Control Valve.  
Connect the appliance to an appropriately designed and  
installed fuel supply system. This system must include an  
approved manual shut-off valve which is readily accessible  
and is located within six (6) feet of the appliance.  
LIGHTING AND SHUT DOWN  
Additionally, a sediment trap or drip leg must be located  
upstream of this manual shut-off valve. Refer to the  
appropriate (natural gas) installation code noted above. If a  
flexible connector is used, it must be of an approved type.  
Lighting the Heater  
1
Before attempting the light the heater, smell all around  
the heater area for gas. Be sure to smell next to the  
floor because LP Gas is heavier than air and will settle  
on the floor. Turn on the gas supply to the appliance  
and check all fittings and connections for gas leaks  
using a mild soap and water solution. NEVER use a  
match to check for gas leaks. Should a gas leak  
occur, shut off the gas supply to the appliance  
immediately. Wait a minimum of five minutes before  
repairing the leak.  
Before attempting to ignite the appliance, all gas fittings and  
connections must be thoroughly checked for gas leaks. Apply a  
small amount of a mild soap and water solution to all fittings  
and connections and observe for escaping bubbles. If any leaks  
are detected, shut off the gas supply to the appliance  
immediately. Wait a minimum of five minutes, repair the leak(s)  
and retest for leakage. Dry all fittings and connections after leak  
testing.  
2
3
Use only the fuel intended for this appliance. Check the  
appliance rating plate for the correct fuel information.  
Turn the gas valve knob clockwise to the “OFF”  
position. See Fig. 1 and Fig. 2 for location of appliance  
parts.  
WARNING  
NEVER USE A FLAME FOR GAS LEAK  
TESTING.  
4
Wait a sufficient length of time (at least five minutes)  
to allow gas which may have accumulated in burner  
compartment to escape.  
5
6
Turn on the main gas supply.  
OPERATING INSTRUCTIONS  
WARNING  
Turn the gas valve knob counter-clockwise to the  
“PILOT” position (see Fig. 1).  
7a Depress and turn Control Knob counterclockwise to  
“Pilot” position and hold for 1-2 minutes. This may take  
longer to purge air from the supply hose depending on  
the length of the hose being used.  
IF YOU DO NOT FOLLOW THESE  
INSTRUCTIONS EXACTLY, A FIRE OR  
EXPLOSION MAY RESULT CAUSING  
PROPERTY DAMAGE, PERSONAL INJURY, OR  
LOSS OF LIFE.  
Depress red spark ignition button to light pilot flame  
(repeat until pilot lights) and continue to hold Control  
Knob at “Pilot” positionfor 30-60 seconds to enable  
Pilot Light Safety System.  
Fully turn Control Knob to “Hi” position to light burner. or...  
7b To light the pilot, move the lighting hole cover aside  
(see Fig. 1) and place a lighted match into the hole.  
Depress the gas valve knob and hold while lighting and  
observing the pilot burner. Ensure that the pilot burner  
ignites from the match. Allow the pilot to burn  
approximately 30 seconds before releasing the gas  
valve knob. If pilot does not remain lighted, repeat the  
lighting operation allowing a longer period of time  
before releasing the gas valve knob.  
CAUTION  
THIS APPLIANCE IS HOT DURING NORMAL  
OPERATION, AVOID PHYSICAL CONTACT.  
CAUTION  
NOTE: In cases where long runs of gas supply lines have  
been installed ahead of the appliance, it may be necessary  
to bleed trapped air out of the supply lines before lighting  
the pilot. New installations generally require bleed of supply  
lines. Wait a minimum of five minutes after bleeding the  
supply lines before attempting to light the heater.  
DO NOT PLACE CLOTHING OR OTHER  
COMBUSTIBLE MATERIALS ON THIS  
APPLIANCE.  
Adjust pilot if necessary as noted under “Pilot Burner  
Adjustment.”  
DO NOT operate this heater if any part has been under  
water. Call a qualified service technician to inspect the appliance  
and to replace any part of the control system or gas control valve  
which has been under water.  
Enerco Group, Inc. | Gas-Fired Infra-Red Portable Construction Heater  
Operating Instructions and Owner’s Manual  
4
 
8. Turn the gas valve knob counter-clockwise to the “ON”  
position (see Fig. 1). The burner will light. DO NOT  
operate the heater in any other than the full “ON”  
position.  
DANGER  
DO NOT ATTEMPT TO CLEAN THE HEATER  
WHILE IT IS OPERATING OR WHILE IT IS STILL  
HOT.  
9. IMPORTANT: DO NOT attempt to adjust the main  
burner input using the main gas supply valve, for  
this may cause the pilot and thermocouple to shut  
down the burner (Fig. 2).  
Turn the heater off and wait until it has completely cooled (at  
least 20minutes) before cleaning.  
Clean the outside of the heater using a damp cloth. DO NOT  
clean the heater by spraying water on it. Wipe the outside of the  
heater off with a dry cloth after cleaning.  
Shut-down instructions:  
To turn the heater OFF,  
For short periods of time, turn the main burner off by  
rotating the gas valve knob clockwise to the “PILOT”  
position.  
Clean the inside of the heater using compressed air. Blow air  
back and forth along all inside surfaces until all dust has been  
dislodged.  
For extended periods of non use, turn the appliance  
completely off by rotating the gas valve knob clockwise  
to the “PILOT” position, depress the knob slightly, then  
rotate the knob fully clockwise to the “OFF” position.  
(Note: For Model 120L, also turn off the gas supply  
cylinder.)  
Clean the orifice of each burner with a #69 drill bit (for LP-Gas).  
Clean the orifice manually (by hand) – DO NOT use power drill.  
Clean the thermocouple lead.  
DO NOT operate this heater if any part has been under  
water. Call a qualified service person to inspect the appliance  
and to replace any part of the control system or gas control valve  
which has been under water.  
Pilot burner adjustment:  
This heater must be inspected at least annually by a qualified  
service person.  
1. Remove the pilot adjustment cap. The pilot adjustment  
cap is a slotted screw located in front of the “Pilot”  
designation stamped on top of valve body just below  
the gas valve knob.  
WARNING  
2. Adjust the pilot key to provide properly sized flame.  
Rotate the key “clockwise” to decrease or “counter-  
clockwise” to increase flame.  
Do not exceed ½ PSI gas pressure to  
appliance gas control valve.  
3. Replace the pilot adjustment cap.  
MAINTENANCE INSTRUCTIONS  
This heater (including hose and regulator assembly if applicable)  
must be inspected before each use. If the hose for the Model  
120L 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.  
The appliance area must be kept free and clear of combustible  
materials, gasoline and other flammable vapors and liquids at all  
times.  
The flow of combustion and ventilation air must not be  
obstructed.  
Cleaning the heater:  
Periodically, the heater must be cleaned of all dirt and dust  
particles.  
Enerco Group, Inc. | Gas-Fired Infra-Red Portable Construction Heater  
Operating Instructions and Owner’s Manual  
5
 
REPLACEMENT PARTS LIST FOR  
MODELS HS125NG / MH125LP / HS125LP  
SEE BACK PAGE FOR PARTS ORDERING INFORMATION  
REF. #  
ITEM #  
DESCRIPTION  
1 ...................... 00332 ............ Manual Control Valve  
2 ...................... 04466 ........... Filter/Diffuser  
3 ...................... 05363............ Orifice Pilot(MH125LP/HS125LP)  
4 ...................... 09352 ............ Thermocouple  
5 ...................... 11357 ............. Pilot Burner  
6 ...................... 11663 ............ Regulator (MH125LP/HS125LP)  
7 ...................... 11666 ............ Regulator (HS125NG)  
8 ...................... 05374 ............ Orifice Pilot (HS125NG)  
9 ...................... CR805 ........... Ignitor  
Figure 1  
10 ..................... CR835 ........... Piezo  
11 ..................... CR820 ........... Axle  
12 ..................... CR815............ Axle Brackets  
13 ..................... CR725 ........... Handle  
14 ..................... CR810 ........... Wheel  
15 ..................... M9005 .......... Valve Supply Tube  
16 ..................... M9010........... Valve Supply Tube Clamp  
17 ..................... M9015........... Burner Manifold  
18 ..................... M9020 .......... Burner  
Figure 2  
Enerco Group, Inc. | Gas-Fired Infra-Red Portable Construction Heater  
Operating Instructions and Owner’s Manual  
6
 
GAS-FIRED INFRA-RED PORTABLE CONSTRUCTION HEATER  
MODELS HS125NG / MH125LP / HS125LP  
13  
Frame Assembly  
Top Plate  
Combustion Chamber  
12  
11  
9
5
Mounting Bracket  
10  
3
8
6
2
4
18  
14  
Pilot Supply Tube  
Propane Hose  
17  
7
16  
1
15  
Enerco Group, Inc. | Gas-Fired Infra-Red Portable Construction Heater  
Operating Instructions and Owner’s Manual  
7
 
OPERATING INSTRUCTIONS AND OWNER’S MANUAL  
READ INSTRUCTIONS CAREFULLY: Read and  
MR. HEATER  
HEATSTAR  
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.  
MH125LP  
HS125NG, HS125LP  
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.  
PARTS ORDERING INFORMATION:  
PURCHASING: Accessories may be purchased at any Mr. Heater or HeatStar local  
dealer or direct from the factory  
FOR INFORMATION REGARDING SERVICE  
Please call Toll-Free 800-251-0001  
Our office hours are 8:30 AM – 5:00 PM, EST, Monday through Friday.  
Please include the model number, date of purchase, and description of problem in  
all communication.  
WARRANTY  
Gas Fired Infra Red Portable Construction Heater HS125NG, MH125LP, & HS125LP  
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 Enerco Group, Inc. will carry a one (1) year  
warranty on the applicable warranties of the suppliers.  
The sole responsibility of Enerco Group, Inc. under this warranty shall be to replace or repair  
any part for which a written claim is made to Enerco Group, Inc. within the time limit of  
this warranty which is returned upon request to Enerco Group, Inc. – F.O.B. Cleveland Ohio  
– or F.O.B. an Enerco Group, Inc. authorized service facility and which is proved to be  
defective upon inspection by Enerco Technical Products.  
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 Enerco Technical Products for parts or products  
sold by Enerco Technical Products, including consequential or special damages.  
Enerco Group, Inc. reserves the right to make changes at any time, without notice or  
obligation, in colors, specifications, accessories, materials and models.  
ENERCO GROUP, INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 • 216-881-5500  
Enerco and Mr. Heater are registered trademarks of Enerco Group, Inc.  
© 2003, Enerco/Mr. Heater. All rights reserved  
ANSI Z83.7/CGA 2.14-2000  
Enerco Group, Inc. | Gas-Fired Infra-Red Portable Construction Heater  
Operating Instructions and Owner’s Manual  
8
 

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