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Force-Air Propane Construction Heater

Operating Instructions and Owner’s Manual

E-3

OPERATINg PRECAUTIONS

This is a propane, direct-fired, forced air heater. It’s intended 
use is primarily temporary heating of buildings under 
construction, alteration or repair.

Propane is heavier than air. If propane leaks from a 
connection or fitting, it sinks to the floor, collecting there 
with the surrounding air, forming a potentially explosive 
mixture. Obviously, propane leaks should be avoided, so set 
up the propane supply with utmost care. Read enclosed Odor 
Fade and Propane Sheet for additional information about 
detecting propane leaks. Leak check new connections or 
reconnections with a soap and water solution and follow all 
connection instructions herein. Also, ask your propane dealer 
for advice on the propane application and supply installation 
and ask him to check it if there are any questions.

This heater was designed and certified for use as a 
construction heater in accordance with ANSI Standard Z83.7/
CGA 2.14-2000. Check with your local fire safety authority 
if you have any questions about your applications. Other 
standards govern the use of fuel gases and heat producing 
products in specific applications. Your local authority can 
advise you about these.

Direct-Fired means that all of the combustion products enter 
the heated space. Even though this heater operates very close 
to 100 percent combustion efficiency, it still produces small 
amounts of carbon monoxide. Carbon monoxide (called CO) 
is toxic. We can tolerate small amounts but not a lot. CO can 
build up in a heated space and failure to provide adequate 
ventilation could result in death. 
 

The symptoms of inadequate ventilation are:

 

• headache 

 

 

• dizziness

 

• burning eyes and nose 

 

 

• nausea

 

• dry mouth or sore throat

So, be sure to follow advice about ventilation in these 
operating instructions.

Forced Air means that a blower or fan pushes the air through 
the heater. Proper combustion depends upon this air flow; 
therefore, the heater must not be revised, modified or 
operated with parts removed or missing. Likewise, safety 
systems must not be circumvented or modified in order to 
operate the heater.

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.

SAFETY PRECAUTIONS

1.  Check the heater thoroughly for damage. DO NOT operate a 

damaged heater.

2.  DO NOT modify the heater or operate a heater which has been 

modified from its original condition.

3.  Use only propane gas.
4.  Use only VAPOR WITHDRAWAL propane supply. If there is any 

question about vapor withdrawal, ask your propane dealer.

5.  Mount the propane cylinders vertically (shutoff valve up). 

Secure them from falling or being knocked over and protect 
them from damage.

6.  Locate propane containers at least (USA) 7 ft. (2.13m), 

(Canada) 10 ft. (3m) from the heater and 

do not

 direct exhaust 

toward containers.

7. 

IMPORTANT

 Use only the hose and regulator assembly 

provided with the heater. Match the color stripe on the 
hangtag attached to the hose assembly with the color on 
the label located near the propane inlet fitting on the heater. 
Inspect hose assembly before each use of the heater. If there 
is excessive abrasion or wear, or hose is cut, replace with hose 
assembly listed on parts list before using heater.

8.   For indoor use only. Area must be well ventilated. 

Figure 1

(also see “Operating Precautions”).

9.  If at any time gas odor is detected, IMMEDIATELY 

DISCONTINUE operation until the source of gas has been 
located and corrected. Read enclosed Odor fade and Propane 
Sheet for additional information about detecting propane leaks.

10.  Install the heater such that it is not directly exposed to water 

spray, rain and/or dripping water.

11.  Maintain minimum clearance from normal combustible material 

(like paper). 

Figure 2

12.  Due to the high surface and exhaust temperatures, adults and 

children must observe clearances to avoid burns or clothing 
ignition.

13.  Operate only on a stable, level surface.
14.  Do not use with duct work. Do not restrict inlet or exit.
15.  Use only the electrical power specified. The electrical 

connection and grounding must comply with National Electrical 
Code - ANSI/NFPA 70 (USA) and CSA C22.1 Canadian Electrical 
Code, Part 1 (Canada).

16.  Use only a properly grounded 3-prong receptacle or extension 

cord.

17.  Do not move, handle or service while hot or burning.
18.  Do not adjust the heater combustion tube elevation while 

heater is running or hot. Adjustments to elevation should only 
be made after the heater has cooled to touch.

19.  Use only in accordance with local codes or, in the absence of 

local codes, with the Standard for the Storage and Handling 
of Liquefied Petroleum Gases ANSI/NFPA 58 and CSA B149.1, 
Natural Gas and Propane Installation Code.

 

Opening 

Opening

Heater 

near floor 

near ceiling

Forced air (

170 FAVT

3 ft

2

 

3 ft

2

 

 

 

 

Clearance 

 

Forced Air 170FAVT

 
From floor .......................................................0 ft
From outlet .....................................................6 ft
From sides ......................................................2 ft
From top .........................................................3 ft

Locate 10 ft. from canvas or plastic tarpaulins or similar  
coverings and secure them to prevent flapping or movement  
due to wind action.

Figure 1

VENTILATION: Minimum openings required

Figure 2: 

MINIMUM CLEARANCE: From normal combustible materials

Содержание MR. HEATER MH170FAVT

Страница 1: ...stion and ventilation air must be provided Refer to page 3 READ INSTRUCTIONS CAREFULLY Read and follow all instructions Place instructions in a safe place for future reference Do not allow anyone who...

Страница 2: ...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 SP...

Страница 3: ...dified from its original condition 3 Use only propane gas 4 Use only VAPOR WITHDRAWAL propane supply If there is any question about vapor withdrawal ask your propane dealer 5 Mount the propane cylinde...

Страница 4: ...Do not use this heater for heating human living quarters Do not use in unventilated areas The flow of combustion and ventilation air must not be obstructed Proper ventilation air must be provided to s...

Страница 5: ...ose has burned 3 Unplug the power cord RESTART AFTER SAFETY SHUTDOWN 1 Securely close valve at propane cylinder Unplug heater 2 Wait 5 minutes 3 Restart following Start procedure MAINTENANCE AND STORA...

Страница 6: ...e Plate 120V Cord Length in Feet Amps 25 50 100 150 5 6 18 16 14 12 6 8 18 16 12 10 8 12 18 14 12 10 10 12 16 14 10 8 12 14 16 12 10 8 WARNING When using a thermostat controlled heater its exit area s...

Страница 7: ...Close Nipple 1 19 28777 Burn Rate Adjustment Valve 1 20 28776 Fitting Elbow 3 8MPT x 1 2 SAE FLR 1 21 22253 Fuel Tube Assembly 1 22 28774 Spark Plug Flame Sensor 1 23 23037 Spark Plug Nut 1 24 24340 T...

Страница 8: ...INPUT HV TRANS GND SCREW G W B LINE CORD O G SPARK PLUG Y B Y B VAC INPUT MOTOR TEMP HV TRANS IGNITION CONTROL TO WIRE TO WIRE 115V 60HZ TO JUNCTION SPARK PLUG HIGH LIMIT SWITCH X2 GND SCREW TEMP MOT...

Страница 9: ...Knob Variable Rate 1 25 28777 Valve Variable Rate 1 26 21905 Ftg Connector 1 27 27285 Valve Thermoelectric 1 28 26127 Ftg Male Connector 1 29 21906 Nut TE Valve Retainer 1 30 21907 Bracket ThermoValve...

Страница 10: ...BE INSTALLED BY A QUALIFIED SERVICE AGENCY MR HEATER HOSES F273701 F273702 AND F272702 ARE SPECIFICALLY DESIGNED FOR USE WITH THIS HEATER ALONG WITH F273699 DISPOSABLE FUEL FILTER REPLACE ANNU ALLY OR...

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