Operating Precautions; Safety­precations - Mr. Heater MHI170QFAVT Operating Instructions And Owner's Manual

OPERATING PRECAUTIONS

This­is­a­propane,­direct-fired,­forced­air­heater.­It's­intended­
use­is­primarily­temporary­heating­of­buildings­under­
construction,­alteration­or­repair.
Propane­is­heavier­than­air.­If­propane­leaks­from­a­
connection­or­fitting,­it­sinks­to­the­floor,­collecting­there­
with­the­surrounding­air,­forming­a­potentially­explosive­
mixture.­Obviously,­propane­leaks­should­be­avoided,­so­set­
up­the­propane­supply­with­utmost­care.­Read­enclosed­Odor­
Fade­and­Propane­Sheet­for­additional­information­about­
detecting­propane­leaks.­Leak­check­new­connections­or­
reconnections­with­a­soap­and­water­solution­and­follow­all­
connection­instructions­herein.­Also,­ask­your­propane­dealer­
for­advice­on­the­propane­application­and­supply­installation­
and­ask­him­to­check­it­if­there­are­any­questions.
This­heater­was­designed­and­certified­for­use­as­a­
construction­heater­in­accordance­with­ANSI­Standard­Z83.7/
CGA­2.14.­Check­with­your­local­fire­safety­authority­if­you­
have­any­questions­about­your­applications.­Other­standards­
govern­the­use­of­fuel­gases­and­heat­producing­products­
in­specific­applications.­Your­local­authority­can­advise­you­
about­these.
Direct-Fired­means­that­all­of­the­combustion­products­enter­
the­heated­space.­Even­though­this­heater­operates­very­close­
to­100­percent­combustion­efficiency,­it­still­produces­small­
amounts­of­carbon­monoxide.­Carbon­monoxide­(called­CO)­
is­toxic.­We­can­tolerate­small­amounts­but­not­a­lot.­CO­can­
build­up­in­a­heated­space­and­failure­to­provide­adequate­
ventilation­could­result­in­death.­
The symptoms of inadequate ventilation are:
­ •­headache­
­ •­dizziness
­ •­burning­eyes­and­nose­
­ •­nausea
­ •­dry­mouth­or­sore­throat
So,­be­sure­to­follow­advice­about­ventilation­in­these­
operating­instructions.
Forced­Air­means­that­a­blower­or­fan­pushes­the­air­through­
the­heater.­Proper­combustion­depends­upon­this­air­flow;­
therefore,­the­heater­must­not­be­revised,­modified­or­
operated­with­parts­removed­or­missing.­Likewise,­safety­
systems­must­not­be­circumvented­or­modified­in­order­to­
operate­the­heater.
When the heater is to be operated in the presence
of other people the user is responsible for properly
acquainting those present with the safety precautions
and instructions, and of the hazards involved.
Figure 1
VENTILATION:­Minimum­openings­required
­
Heater­
Forced­air­(MHI170QFAVT)­
Force-Air Propane Construction Heater
Opening­ Opening
near­floor­ near­ceiling
3­ft ­ 3­ft
2 2
SAFETY PRECAUTIONS
1.­ Check­the­heater­thoroughly­for­damage.­DO­NOT­operate­a­
damaged­heater.
2.­ DO­NOT­modify­the­heater­or­operate­a­heater­which­has­been­
modified­from­its­original­condition.
3.­ Use­only­propane­gas.
4.­ Use­only­VAPOR­WITHDRAWAL­propane­supply.­If­there­is­any­
question­about­vapor­withdrawal,­ask­your­propane­dealer.
5.­ Mount­the­propane­cylinders­vertically­(shutoff­valve­up).­
Secure­them­from­falling­or­being­knocked­over­and­protect­
them­from­damage.
6.­ Locate­propane­containers­at­least­(USA)­7­ft.­(2.13m),­
(Canada)­10­ft.­(3m)­from­the­heater­and­do not­direct­exhaust­
toward­containers.
7.­ IMPORTANT­Use­only­the­hose­and­regulator­assembly­
provided­with­the­heater.­Match­the­color­stripe­on­the­hang­
tag­attached­to­the­hose­assembly­with­the­color­on­the­label­
located­near­the­propane­inlet­fitting­on­the­heater.­Inspect­
hose­assembly­before­each­use­of­the­heater.­If­there­is­
excessive­abrasion­or­wear,­or­hose­is­cut,­replace­with­hose­
assembly­listed­on­parts­list­before­using­heater.
8.­­ For­indoor­use­only.­Area­must­be­well­ventilated.­Figure 1.­
(also­see­"Operating­Precautions").
9.­ If­at­any­time­gas­odor­is­detected,­IMMEDIATELY­
DISCONTINUE­operation­until­the­source­of­gas­has­been­
located­and­corrected.­Read­enclosed­Odor­fade­and­Propane­
Sheet­for­additional­information­about­detecting­propane­leaks.
10.­ Install­the­heater­such­that­it­is­not­directly­exposed­to­water­
spray,­rain­and/or­dripping­water.
11.­ Maintain­minimum­clearance­from­normal­combustible­material­
(like­paper).­Figure 2.­
12.­ Due­to­the­high­surface­and­exhaust­temperatures,­adults­and­
children­must­observe­clearances­to­avoid­burns­or­clothing­
ignition.
13.­ Operate­only­on­a­stable,­level­surface.
14.­ Do­not­use­with­duct­work.­Do­not­restrict­inlet­or­exit.
15.­ Use­only­the­electrical­power­specified.­The­electrical­
connection­and­grounding­must­comply­with­National­Electrical­
Code­-­ANSI/NFPA­70­(USA)­and­CSA­C22.1­Canadian­Electrical­
Code,­Part­1­(Canada).
16.­ Use­only­a­properly­grounded­3-prong­receptacle­or­extension­
cord.
17.­ Do­not­move,­handle­or­service­while­hot­or­burning.
18.­ Do­not­adjust­the­heater­combustion­tube­elevation­while­
heater­is­running­or­hot.­Adjustments­to­elevation­should­only­
be­made­after­the­heater­has­cooled­to­touch.
19.­ Use­only­in­accordance­with­local­codes­or,­in­the­absence­of­
local­codes,­with­the­Standard­for­the­Storage­and­Handling­
of­Liquefied­Petroleum­Gases­ANSI/NFPA­58­and­CSA­B149.1,­
Natural­Gas­and­Propane­Installation­Code.
Figure 2: MINIMUM­CLEARANCE:­From­normal­combustible­materials
Clearance­
From­floor­ . ......................................................0­ft
From­outlet­ . ....................................................6­ft
From­sides­......................................................2­ft
From­top­ . ........................................................3­ft
Locate­10­ft.­from­canvas­or­plastic­tarpaulins­or­similar­
coverings­and­secure­them­to­prevent­flapping­or­movement­
due­to­wind­action.
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Operating Instructions and Owner's Manual
­ Forced­Air­170QFAVT