General Information; Clearances - Mr. Heater MH40NG Guide D'utilisation Et Instructions De Fonctionnement

1. GENERAL INFORMATION

a.­­ Your­heater­comes­fully­assembled­and­is­tested­at­the­factory­
for proper gas and input as stated on the name plate.
b.­­ Before­proceeding­with­the­installation,­be­sure­to­inspect­for­
damages.­Freight­company­must­be­notified­of­any­damages­
and­request­that­the­inspection­be­made.­MR.­HEATER­will­
send­replacement­parts­for­damaged­parts­only­after­receiving­
a­signed­inspection­report­to­prove­the­liability­of­the­freight­
company.
c. Do not attempt to operate heater with any other gas than that
indicated on the heater name plate.
d.­­ The­installation­of­heater­must­conform­with­local­building­
codes,­or­in­absence­of­local­codes,­with­the­National­Fuel­Gas­
Code,­ANSI­Z223.1a/NFPA54,­and­Standard­for­Storage­and­
Handling­of­Liquefied­Petroleum­Gases,­ANSI/NFPA­58.
e.­ Canadian­installations­must­comply­with­CAN/CGA-B149.1.2­
Gas­Code­which­can­be­purchased­from­the­CSA­(Canadian­
Standards­Association)­website­@­http://www.csa.ca­or­by­
calling­1-800-463-6727.
f.­­ Plugged­1/8"­N.P.T.­Test­Gage­Connection­is­located­on­the­
Heater­Gas­Valve­or­a­¼"­N.P.T.­Connection­is­located­on­the­
outside­of­the­Cast­Venturi.­
g.­ Contact­the­factory­when­appliance­is­to­be­installed­at­high­
altitudes.­Factory­supplies­high-altitude­conversion­kits­with­
instructions and data plates.
For additional information, contact;
MR.­HEATER­CORPORATION
CUSTOMER­SERVICE­DEPT.
CLEVELAND,­OHIO
1-800-251-0001
MODEL BTU/HR. RATING
NO.
NATURAL
MH/HS40NG 40,000
MH/HS40LP —
MODEL OPERATING
NO. PRESSURE
MH/HS40NG 6.8"w.c.
MH/HS40LP 10"w.c.
BTU/HR. RATING
MODEL GAS
NO. NAT.
MH/HS40NG 40,000 —
MH/HS40LP —
Table 1. BTU Ratings and Supply Pressures
GAS
PROPANE NAT.
— 6.8" W.C.
40,000 —
Table 2. Heater Dimensions and Orifice Sizes
ORIFICE SIZE
BURNER PILOT
37 .023
50 .015
Table 3. Installation, Ventilation and Mounting Information
NORMAL
MOUNTING
L.P. POSITION
HORIZ-30˚
40,000 HORIZ-30˚
Model # MH40NG/LP
*The­following­extra­NFPA­manuals­are­helpful­when­installing­
MR.­HEATER­in­a­location­not­anticipated­in­this­manual:
Number
NFPA­88­ ­
NFPA­409­
­ DO­NOT­EXCEED­½­PSI­INLET­PRESSURE­TO­HEATER

2. CLEARANCES

Minimum­clearances­to­combustibles­(Refer­to­Table­3).­.­Also­
between­control­end­of­heater­for­servicing­and­minimum­on­top­
and­sides­for­ventilation­and­combustion­air­supply.
A­minimum­clearance­of­8'­above­floor­for­public­garages­in­
accordance­with­ANSI/NFPA­No.­409­most­recent­edition,­or­Table­
3;­the­larger­dimension­of­ANSI/NFPA­No.­409­or­Table­3­is­to­be­
used.
*When­selecting­installation­locations­for­MR.­HEATER­ensure­that­
the­opening­of­any­exterior­or­interior­doors­or­windows­will­not­
violate­clearances­or­contact­any­heater­components.
GAS SUPPLY PRESSURE (W.C.)
MIN. MAX.
L.P. NAT. L.P.
— 7" W.C. —
11" W.C. — 14" W.C. —
INPUT
BTU/H WIDTH
40.000 19-1/4"
40,000 19-1/4"
CLEARANCES TO COMBUSTIBLE SURFACES
TOP SIDES
34" 30"
34" 30"
3
Installation Instructions and Owner's Manual
Related Subject
Clearances­to­Combustible­Surfaces
Clearances­to­Combustible­Surfaces
ORIFICE
MANIFOLD
NAT. L.P. NAT.
5.8" — 37
10" —
SIZE
LENGTH HEIGHT
30-1/4" 12"
30-1/4" 12"
BACK BELOW
30" 68"
30" 68"
SIZE
L.P.
—
50
WEIGHT
25 lbs.
25 lbs.