MrHeater F270470 Assembly instructions

70486 - 2017 - CB MR. HEATER, INC.
CONVECTION
CONSTRUCTION HEATER
If the information in this manual is not followed exactly, a fire or explosion
may result causing property damage, personal injury or loss of life.
WARNING:
MH25CVX
MH80CVX
MH200CVX
OPERATING INSTRUCTIONS
AND OWNER’S MANUAL
READ INSTRUCTIONS CAREFULLY:

2
Convection Construction Heater
Figure 1
VENTILATION: Minimum openings required
Opening Opening
Heater Model # near floor near ceiling
25CVX, 80CVX, 200CVX .................. 2 ................... 2
GENERAL HAZARD WARNING:
HEATER.
WARNING:
WARNING:
THE STATE OF CALIFORNIA REQUIRES THE
FOLLOWING WARNING:
WARNING:
-
WARNING:
TABLE OF CONTENTS
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.......... 7
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CAUTION! FAILURE TO FOLLOW THESE VENTILATION
REQUIREMENTS
MAY RESULT IN SOOTING DAMAGE.
MODEL MH25CVX MH80CVX MH200CVX
MAX SUPPLY PRESSURE:
To RegulatorMIN
(MAX=Bottle Pressure)
5PSI
(34.5 kPa)
5PSI
(34.5 kPa)
15PSI
(103 kPa)
Regulator Out 11" W.C.
(2.74 kPa)
11" W.C.
(2.74 kPa)
10 PSI
(68.9 kPa)
Ignition Piezo Piezo Piezo
Min Ambient Temp. 0° F (17.8) ° C 0° F (17.8) ° C 0° F (17.8) ° C
BTU Rating Low-High 15,000-25,000
BTU/HR
(4.3-7.3 kW)
30,000-80,000
BTU/HR
(8.79-23.4 kW)
75,000-200,000
BTU/HR
(22-58.6 kW)
Fuel
Consumption
1.58 LBS/HR
(.71kg/HR)
1.4-3.7 LBS/HR
(.74-1.8 kg/HR)
3.5-9.3 LBS/HR
(1.44-4.32 kg/HR)
Hose Length 10' (304 cm) 10' (304 cm) 10' (304 cm)
SPECIFICATIONS
GENERAL INFORMATION
1-800-251-0001
WWW.MRHEATER.COM
WWW.MRHEATER.COM

3
Convection Construction Heater
OPERATING PRECAUTIONS
• headache
• dizziness
• burning eyes and nose
• nausea
• dry mouth or sore throat
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
3. DO NOT light or operate heater unless the shells are fully
extended and locked into position.
4. Use only propane gas.
5. Use only VAPOR WITHDRAWAL propane supply. If there
is any question about vapor withdrawal, ask your propane
dealer.
up). Secure them from falling or being knocked over and
protect them from damage.
7. Locate propane containers at least (USA) 7 ft. (2.13m) for
25CVX, 80CVX and 9 ft. (2.7m) for 200CVX (Canada)10
ft. (3m) from the heater and do not direct exhaust toward
containers.
8. IMPORTANT Use only the hose and regulator assembly
provided with the heater. Match the color stripe on the
Figure 2
MINIMUM CLEARANCE: From normal combustible material
25CVX, 80CVX, 200CVX
Clearance Convection
..................................................
.....................................................
hang tag attached to the hose assembly with the color
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.
9. For indoor use only. Area must be well ventilated. Figure
1. (Also see "Operating Precautions").
10. If at any time gas odor is detected, IMMEDIATELY
DISCONTINUE operation until the source of gas has
been located and corrected.
11. Install the heater such that it is not directly exposed to
water spray, rain and/or dripping water.
12. Maintain minimum clearance from normal combustible
material (like paper). Figure 2.
13. Due to the high surface and exhaust temperatures, adults
and children must observe clearances to avoid burns or
clothing ignition.
14. Operate only on a stable, level surface.
15. Do not use with duct work. Do not restrict inlet or exit.
16. Do not move, handle or service while hot or burning.
17. Use only in accordance with local codes or, in the
absence of local codes, with the Standard for the Storage
Installation Code.

4
Convection Construction Heater
ODOR FADE WARNING
WARNING
Asphyxiation Hazard
FUEL GAS ODOR
LP gas and natural gas have man-made odorants added
specifically for detection of fuel gas leaks.
If a gas leak occurs you should be able to smell the fuel
gas. Since Propane (LP) is heavier than air you should
smell for the gas odor low to the floor. ANY GAS ODOR
IS YOUR SIGNAL TO GO INTO IMMEDIATE ACTION!
ODOR FADING - NO ODOR DETECTED
The odorant in propane (LP) gas and natural gas
is colorless and the intensity of its odor can fade
under some circumstances.
• Always be sensitive to the slightest gas odor.
ATTENTION - CRITICAL POINTS TO
REMEMBER!

5
Convection Construction Heater
CAUTION: NEVER IGNITE AND / OR RUN THIS HEATER UNLESS THE SHELLS
ARE FULLY EXTENDED AND LOCKED INTO POSITION. (Only for Models: MH80CVX, MH200CVX)
CAUTION: NEVER IGNITE AND / OR RUN THIS HEATER UNLESS THE SHELLS
ARE FULLY EXTENDED AND LOCKED INTO POSITION. (Only for Models: MH80CVX, MH200CVX)

6
Convection Construction Heater
OPERATING INSTRUCTIONS
PREPARING FOR OPERATION
STARTING (200CVX)
1. WARNING: BEFORE LIGHTING PILOT
STARTING (25CVX, 80CVX)
1. WARNING: BEFORE LIGHTING PILOT
SERVICING
IMPORTANT
STOP (All UNITS)
RESTART AFTER SAFETY SHUTDOWN
MAINTENANCE AND STORAGE

7
Convection Construction Heater
SIZE AND CAPACITY OF PROPANE
CYLINDERS REQUIRED
80CVX 200CVX
25CVX

8
Convection Construction Heater
Exploded view and parts list MH200CVX
REF # ITEM # Desc. QTY
1 28590 Combustion Chamber top 200CV 1
2 28612 Combustion Chamber Upper 200CV 1
3 28613 Combustion Chamber Lower 200CV 1
4 28614 Heater Base 1
5 28597 Combustion Chamber Ring 1
6 28615 Burner Cone 1
7 28584 Burner Orifice Holder 1
8 28616 Burner Orifice 1
9 28617 Thermocouple 1
10 28618 Igniter Electrode 1
11 28619 Igniter Electrode Bracket 1
12 28620 Pilot Burner Head 1
13 28621 Pilot Burner Orifice 1
14 28622 Pilot Gas Supply line 1
15 28623 Igniter Lead 1
16 20735 Piezo Igniter With Nut 1
18 28624 Burner Supply Tube 1
20 28626 Pilot Supply connector 90 Degree 1
21 28625 Rate Adjustment Knob 1
22 28627 Variable Valve Body 1
23 58582 Thermoelectric Valve Retainer Nut 1
24 28628 Thermoelectric Valve 1
25 28629 Valve Inlet Nipple 1
27 N/A Rubber Cap 1
28 28630 Hose and regulator assembly 10' 1
29 N/A Bottom protection plate 1
58582

9
Convection Construction Heater
Exploded view and parts list MH80CVX
REF # ITEM # Desc. QTY
1 28590 Combustion Chamber top 80CVX 1
2 28589 Combustion Chamber Upper 80CVX 1
3 28588 Combustion Chamber Lower 80CVX 1
4 28593 Heater Base 1
5 28597 Combustion Chamber Ring 1
6 28585 Burner Cone 1
7 28584 Burner Orifice Holder 1
8 28583 Burner Orifice 1
10 28595 Burner Supply Tube 1
11 28594 Fuel Inlet Supply tube 1
12 28591 Variable Rate Valve Knob 1
13 28587 Valve Control Assembly 1
14 58582 Retainer Nut 2
15 28596 Inlet Flare fitting 1
16 N/A Rubber Cap 1
17 28592 Thermocouple 1
18 28586 Igniter Electrode 1
19 28598 Hose and regulator assembly 10' 1
20 N/A Bottom protection plate 1
58582

10
Convection Construction Heater
Exploded view and parts list MH25CVX
REF # ITEM # Desc. QTY
1 28605 Combustion Chamber top 25CVX 1
2 28606 Combustion Chamber Upper 25CVX 1
3 28607 Heater Base 1
4 28608 Burner Venturi 1
5 28601 Igniter Electrode 1
6 28604 Retainer Nut 1
8 28600 Valve With Integrated Piezo Igniter 1
9 28602 Burner Orifice 1
10 28603 Orifice Holder 1
11 28599 Burner Supply Tube 1
12 28610 Inlet Nipple 1
13 N/A Inlet Flare fitting 1
14 N/A Rubber Cap 1
15 28591 Variable Rate Knob 1
16 28592 Thermocouple 1
17 28611 Hose and regulator assembly 10' 1