CLEARANCE (Minimum clearances to combustible materials)
Do not exceed the gas supply pressures shown on rating plates. The maximum inlet gas supply pressures and minimum inlet supply
pressures (for purposes of input adjustment) for LP-Gas and Natural gas are shown as follows:
MODEL NO.
BTU/HR RATING
NORMAL OPERATING
CLEARANCES TO
TYPE GAS
POSTION
COMBUSTIBLES
NATURAL
LP-GAS
TOP
SIDES
BACK
MH125LP/
HS125LP
125,000*
VERTICAL
48”
60”
60”
HS125NG
125,000
VERTICAL
48”
60”
60”
CONTENTS
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
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.
FOR YOUR SAFETY
Do not use this heater in a space where
gasoline or other liquids having flammable
vapors are stored or used.
WARNING
DO NOT EXCEED ½ psi (14” w.c.) GAS
PRESSURE TO THE GAS CONTROL VALVE.
SPECIFICATIONS
MODEL NO. ................ MH125LP/HS125LP .......... HS125NG
GAS TYPE ....................................... LP-Gas ....... Natual Gas
MAX. INLET PRESSURE. ........... 14 IN. W.C. ...... 14 IN. W.C.
MIN. INLET PRESSURE ............. 11 IN. W.C. ........ 7 IN. W.C.
MANIFOLD PRESSURE ........... 9.5 IN. W.C. ......... 6 IN.W.C.
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.
*Tank size and tank temperature can directly affect BTU output
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).
2
Operating Instructions and Owner’s Manual
Enerco Group, Inc. | Gas-Fired Infra-Red Portable Construction Heater
