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Mr. Heater MHVFBF20LPBT, Operating Instructions And Owner'S Manual, Page: 18 / 20

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Mr. Heater MHVFBF20LPBT Operating Instructions And Owner'S Manual Download Page 18

18

Installation Instructions and Owner’s Manual

Unvented LP-Gas Vent Free Room Heaters

MODEL: MHVFRD20LPBT / MHVFRD20LPT

ITEM

P/N

PART DESCRIPTION

QTY

ITEM

P/N

PART DESCRIPTION

QTY

1

80094

Wire Guard

1

13

80010

Thermostat

 Valve 

 Mounting Bracket

1

2

80096

Front Panel

1

14

N/A

Back Heat Shield

1

3

80086

Reflector

1

15

80058

Floor Mounting Feet

1

4

80056

ODS 

Pilot 

Assembly w/ Thermocouple (LP)

1

16

80097

Back Panel

1

5

N/A

ODS Bottom Bracket

1

17

80037

Wall Mounting Bracket

1

6

80108

Burner Assembly

1

18

N/A

Heat Shield Reflector

1

7

80106

Regulator

1

19

F299201

Fan Assembly

1

8

80020

Regulator Connection

1

20

80011

Ignit

er

 Module Mounting Bracket

1

9

80055

Regulator Mounting Bracket

1

21

80019

Ignit

e

r 

Module

1

10

80009-04 Orifice

1

22

80014

Ign

iter 

Wire

1

11

N/A

Bracket Plenum Assembly

1

23

80013

High Limit Switch (Fan)

1

12

80081

Thermostat Valve

1

24

80049

Fan Switch

1

**

70342

Hardware Kit (not shown)

1

Blower not 

included on all 

units

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

PARTS LIST AND DIAGRAM 

WARNING:

 Failure to position the parts in accordance with these diagrams or failure to use only parts specifically approved with this heater 

may result in property damage or personal injury.

14

15

16

17

18

19

20

21

22

24

7

23

8

9

10

11

12

13

Summary of Contents for MHVFBF20LPBT

Page 1: ...oper installation adjustment alteration service or maintenance can cause injury or property damage Refer to this manual for correct installation and operational procedures For assistance or additional information consult a qualified installer service agency or gas supplier 2018 CB UNVENTED LP GAS FIRED ROOM HEATER OPERATING INSTRUCTIONS AND OWNER S MANUAL READ INSTRUCTIONS CAREFULLY Read and follo...

Page 2: ...be SOCIAL MEDIA WARNINGS IMPORTANT Read this owner s manual carefully and completely before trying to assemble operate or service this heater Improper use of this heater can cause serious injury or death from burns fire explosion electrical shock and carbon monoxide poisoning WARNING This appliance is equipped for propane gas Field conversion is not permitted WARNING Do not use any accessory not a...

Page 3: ...hr 2 931W shall not be installed in a bedroom or bathroom 3 Keep all air openings in heater clear free of debris or any blockage This will insure that enough air for proper combustion enters the heater 4 If heater shuts off do not relight until you provide fresh outside air If heater keeps shutting off it requires servicing 5 Turn off and unplug heater and let cool before servicing Only a qualifie...

Page 4: ... The following are excerpts from National Fuel Gas Code NFPA 54 ANSI Z223 1 Section 5 3 Air for Combustion and Ventilation All spaces in homes fall into one of the three following ventilation classifications 1 Unusually Tight Construction 2 Unconfined Space 3 Confined Space This heater must not be installed in a confined space or unusually tight construction unless provisions are provided for adeq...

Page 5: ...r Vent Free Heater 20 000 Btu hr Total 60 000 Btu hr 4 Compare the maximum Btu hr the space can support with the actual amount of Btu hr used Example 51 800 Btu hr maximum Btu hr the space can support 60 000 Btu hr Actual amount of Btu hr used The space in the above example is a confined space because the actual Btu hr used is more than the maximum Btu hr the space can support You must provide add...

Page 6: ...earances from the floor ceiling and joining walls WARNING Rework worksheet adding the space of the adjoining unconfined space The combined space must have enough fresh air to supply all ap pliance in both spaces Ventilation from Outdoors If necessary provide extra fresh air by using ventilation grills or ducts Connect these items directly to the outdoors or spaces open to the outdoors These includ...

Page 7: ...g bracket is level For wall stud mounting locate one end of the mounting bracket over a wall stud WARNING Maintain minimum clearances shown in figure 7 If you can provide greater clearances from the floor and joining wall 2 Mark screw locations on wall see figure 7 3 Remove tape and mount bracket from wall Figure 7 Attaching to Wall Stud For attaching mounting bracket to wall studs 1 Drill holes a...

Page 8: ...ottom mounting holes and wall anchor or drilled hole 7 Hold spacer in place with one hand With the other hand insert mounting screw through bottom mounting hole and spacer Place tip of screw in opening of wall anchor or drilled hole 8 Tighten both screws until heater is firmly secured to wall Do not over tighten Note Do not re place front panel at this time Replace front panel after making gas con...

Page 9: ... heater If sediment trap is not installed or is installed improperly heater may not run correctly IMPORTANT Hold pressure regulator with wrench when connecting it to gas piping and or fittings CHECKING GAS CONNECTIONS WARNING Test all gas piping and connections for leaks after installing or servicing Correct all leaks at once WARNING Never use an open flame to check for a gas leak Apply a mixture ...

Page 10: ...call the fire department C Use only your hand to push in or turn the gas control knob Never use tools If knob will not push in or turn by hand don t try to repair it call a quali fied service technician or gas supplier Force or attempted repair may result in a fire or explosion Pressure Testing Heater Gas Connections 1 The appliance and its appliance main gas valve must be disconnected from the ga...

Page 11: ... for repairs If control knob does not pop up when released contact a qualified service person or gas supplier for repairs 8 When the pilot is lit turn control knob counterclockwise to heating level The main burner should light 9 To select the desired heat level turn the temperature setting knob counterclockwise to between 1 5 THERMOSTAT CONTROL OPERATION FOR IR20LPT IR30LPT The thermostatic contro...

Page 12: ...ilot assembly clean and free of dust and dirt To clean these parts we recommend using compressed air no greater than 30 psig This can be done by using a vacuum cleaner in the blow position or using compressed air in a can If using canned air please follow the directions on the can If you don t follow directions on the can you could damage the burner or pilot assembly In addition the directions bel...

Page 13: ...regulator 6 Turn Control knob to pilot position When ignitor button is pressed in there is a spark at the ODS pilot but no ignition 1 Control knob not fully pressed in 2 Control knob not pressed in long enough 3 Equipment shutoff valve not fully open 4 Thermocouple damaged 5 Control valve damaged 1 Press in control knob fully 2 After ODS pilot lights keep control knob pressed in for 30 seconds 3 F...

Page 14: ...ee Figure 4 page 7 4 Clean burner orifice see Cleaning and Maintenance on pages 11 and 12 or replace burner orifice White powder residue forming within burner box or on adjacent walls or furni ture 1 When heated vapors from furniture polish wax carpet cleaners etc turn into white powder residue 1 Turn heater off when using furniture polish wax carpet cleaner or similar products Heater produces unw...

Page 15: ...Installation Instructions and Owner s Manual Unvented LP Gas Vent Free Room Heaters 15 This page intentionally left blank ...

Page 16: ...ocouple LP 1 22 F299201 Fan Assembly 1 9 80009 05 Orifice 1 23 80049 Fan Switch 1 10 80073 Orifice Adapter 1 24 80011 Igniter Module Mounting Bracket 1 11 80055 Regulator Mounting Bracket 1 25 80019 Igniter Module 1 12 80020 Regulator Connection 1 26 80014 Ignitor Wire 1 13 80106 Regulator 1 27 N A Burner Left Bracket 1 14 N A Burner Right Bracket 1 28 80013 High Limit Switch FAN 1 70342 Hardware ...

Page 17: ...22 F299201 Fan Assembly 1 9 80009 03 Orifice 1 23 80049 Fan Switch 1 10 80073 Orifice Adapter 1 24 80011 Igniter Module Mounting Bracket 1 11 80055 Regulator Mounting Bracket 1 25 80019 Igniter Module 1 12 80020 Regulator Connection 1 26 80014 Igniter Wire 1 13 80082 Regulator 1 27 N A Burner Left Bracket 1 14 N A Burner Right Bracket 1 28 80013 High Limit Switch FAN 1 70342 Hardware Kit not shown...

Page 18: ...80106 Regulator 1 19 F299201 Fan Assembly 1 8 80020 Regulator Connection 1 20 80011 Igniter Module Mounting Bracket 1 9 80055 Regulator Mounting Bracket 1 21 80019 Igniter Module 1 10 80009 04 Orifice 1 22 80014 Igniter Wire 1 11 N A Bracket Plenum Assembly 1 23 80013 High Limit Switch Fan 1 12 80081 Thermostat Valve 1 24 80049 Fan Switch 1 70342 Hardware Kit not shown 1 Blower not included on all...

Page 19: ...2 Regulator 1 19 F299201 Fan Assembly 1 8 80020 Regulator Connection 1 20 80011 Igniter Module Mounting Bracket 1 9 80055 Regulator Mounting Bracket 1 21 80019 Igniter Module 1 10 80009 03 Orifice 1 22 80014 Igniter Wire 1 11 N A Bracket Plenum Assembly 1 23 80013 High Limit Switch Fan 1 12 80081 Thermostat Valve 1 24 80049 Fan Switch 1 70342 Hardware Kit not shown 1 Blower not included on all uni...

Page 20: ... be purchased at any Mr Heater local dealer or direct from the factory FOR INFORMATION REGARDING SERVICE Please call Toll Free 800 251 0001 www mrheater com Our office hours are 8 00 AM 5 00 PM EST Monday through Friday Please include the model number date of purchase and description of problem in all communication LIMITED WARRANTY Mr Heater Inc warrants its heaters and accessories to be free from...

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