Table Of Contents - Mr. Heater MH40LP Operating Instructions And Owner's Manual

wARNING:
Improper installation, adjustment, alteration, service or main-
tenance can cause property damage, injury or death. Read the
installation, operation, and maintenance instructions thorough-
ly before installing or servicing this equipment. For assistance
or additional information 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.

TABLE OF CONTENTS

1. GeNeRAL INFoRMATIoN ........................................................ 3
2. CLeARANCeS .......................................................................... 3
3. SUSPeNSIoN .......................................................................... 4
4. GAS SUPPLY............................................................................ 4
5. PIPING ReQUIReMeNTS .......................................................... 4
6. GAS PReSSURe ....................................................................... 4
7. eLeCTRICAL ............................................................................. 4
8. THeRMoSTAT & LoCATIoN ..................................................... 4
9. VENTILATION .......................................................................... 5
10. START-UP PRoCeDURe .......................................................... 5
1 1. HeATeR SHUTDoWN ............................................................. 5
12. oPeRAToR MAINTeNANCe INSTRUCTIoNS ........................... 5
13. RePLACING THe GAS VALVe UNIT ......................................... 7
14. FReQUeNCY oF oPeRAToR CHeCKS ..................................... 7
MH40 RePLACeMeNT PARTS LIST ............................................... 7
2
Model # MH40NG/LP
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 build-
ing 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 9 for ventilation.
THE STATE OF CALIFORNIA REQUIRES THE
FOLLOwING wARNING:
wARNING:
Combustion by-products produced when using this product con-
tain carbon monoxide, a chemical known to the State of California
to cause cancer and birth defects (or other reproductive harm).
Installation Instructions and Owner's Manual