FMI FLAME-MAX FVFM27NR User Manual
Size:
1.81 Mb
Download

Inspecting Burners

Check pilot flame pattern and burner flame patterns often.

PILOT FLAME PATTERN

Figure 28 shows a correct pilot flame pattern. Figure 29 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. When the thermocouple cools, the heater will shut down.

If pilot flame pattern is incorrect, as shown in Figure 29

turn heater off (see To Turn Off Gas to Appliance, page 20)

see Troubleshooting, page 24

Note: The pilot flame on natural gas units will have a slight curve, but flame should be blue and have no yellow or orange color.

Pilot Burner

Thermocouple

Figure 28 - Correct Pilot Flame Pattern

(Propane/LP Pilot Shown)

Pilot Burner

Thermocouple

Figure 29 - Incorrect Pilot Flame Pattern

(Propane/LP Pilot Shown)

Burner FLAME PATTERN

Figure 30 shows a correct burner flame pattern. Figure 31 shows an incorrect burner flame pattern.

If burner flame pattern is incorrect as shown in Figure 31

turn heater off (see To Turn Off Gas to Appliance, page 20)

see Troubleshooting, page 24

Figure 30 - Correct Flame Pattern

Figure 31 - Incorrect Flame Pattern

BURNER PRIMARY AIR HOLES

Air is drawn into the burner through the holes in the fitting at the burner entrance. These holes may become blocked with dust or lint.

Periodically inspect these holes for any blockage and clean if needed. Blocked air holes will create soot.

main burner

Periodically inspect all burner flame holes with the heater running. All slotted burner flame holes should be open with yellow flame present. All round burner flame holes should be open with a small blue flame present. Some burnerflameholesmaybecomeblockedbydebris or rust, with no flame present. If so, turn off heaterandletcool.Removeblockage,blocked burner flame holes will create soot.

22

www.fmiproducts.com

121353-01H

Cleaning and Maintenance

WARNING: Turn off heater and let cool before cleaning.

CAUTION: You must keep control areas, burner, and circulating air passageways of heater clean. Inspect these areas of heater before each use. Have heaterinspectedyearlybyaqualified service person. Heater may needmorefrequentcleaningdue to excessive lint from carpeting, bedding material, pet hair, etc.

WARNING: Failure to keep the primary air opening(s) of theburner(s)cleanmayresultin sooting and property damage.

Cleaning Burner Injector

Holder and Pilot Air Inlet Hole

The primary air inlet holes allow the proper amount of air to mix with the gas. This provides a clean burning flame. Keep these holes clear of dust, dirt, lint, and pet hair.

Clean these air inlet holes prior to each heating season. Blocked air holes will create soot. We recommend that you clean the unit every three months during operation and have heater inspected yearly by a qualified service person.

We also recommend that you keep the burner tube and pilot assembly clean and free of dust and dirt. To clean these parts we recommend using compressed air no greater than 30 PSI.

Your local computer store, hardware store, or home center may carry compressed air in a can. If using compressed air in a can, please follow the directions on the can. If you don't follow directions on the can, you could damage the pilot assembly.

1.Shut off unit, including pilot. Allow unit to cool for at least thirty minutes.

2.Inspect burner, pilot, and primary air inlet holes on injector holder for dust and dirt (see Figure 32).

3.Blow air through the ports/slots and holes in the burner.

4.Check injector holder located at end of burner tube again. Remove any large particles of dust, dirt, lint, or pet hair with a soft cloth or vacuum cleaner nozzle.

5.Blow air into the primary air holes on the injector holder.

6.In case any large clumps of dust have now been pushed into the burner repeat steps 3 and 4.

Clean pilot assembly also. A yellow tip on pilot flame indicates dust and dirt in the pilot assembly. There is a small pilot air inlet hole about 2" from where the pilot flame comes out of pilot assembly (see Figure 33). With unit off, lightly blow air through air inlet hole. You may blow through a drinking straw if compressed air is not available.

Burner

Injector Holder

Tube

(May Be Brass

 

or Aluminum

 

Depending on

 

Model)

Primary Air Inlet

Holes (Shape of Holes May Vary by Model)

Figure 32 - Injector Holder On Outlet

Burner Tube

Ports/Slots Burner

Tube

Pilot Assembly

Pilot Air

Inlet Hole

Figure 33 - Pilot Inlet Air Hole

LOGS

If you remove logs for cleaning, refer to Installing Logs, page 17, to properly replace logs.

Replace log(s) if broken or chipped (dimesized or larger).

121353-01H

www.fmiproducts.com

23

Wiring Diagram

Note: For proper operation of optional accessories, the wires from the switch to the control must be connected exactly as shown.

A

Thermopile

Troubleshooting

WARNING: Turn off heater and let cool before servicing. Only a qualified service person should service and repair heater.

CAUTION: Never use a wire, needle, or similar object to clean ODS/pilot. This can damage ODS/pilot unit.

Note: All troubleshooting items are listed in order of operation.

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

 

 

 

 

Whenignitorbuttonispressed,

1. Ignitor electrode not con-

1.

Reconnect ignitor cable

there is no spark at ODS/

 

nected to ignitor cable

 

 

pilot

2. Ignitor cable pinched or

2.

Free ignitor cable if pinched

 

 

wet

 

by any metal or tubing.

 

 

 

 

Keep ignitor cable dry

 

3.

Piezo ignitor nut is loose

3.

Tighten nut holding piezo

 

 

 

 

ignitor to base panel of log

 

 

 

 

set. Nut is located behind

 

 

 

 

base panel

 

4.

Broken ignitor cable

4.

Replace ignitor cable

 

5.

Bad piezo ignitor

5.

Replace piezo ignitor

 

6.

Ignitor electrode broken

6.

Replace pilot assembly

 

7.

Ignitor electrode positioned

7.

Replace pilot assembly

 

 

wrong

 

 

 

 

 

 

Whenignitorbuttonispressed,

1. Gas supply turned off or

1.

Turn on gas supply or open

there is spark at ODS/pilot but

 

equipment shutoff valve

 

equipment shutoff valve

no ignition

 

closed

 

 

 

2.

Control knob not in PILOT

2.

Turn control knob to PILOT

 

 

position

 

position

 

3.

Control knob not pressed in

3.

Press in control knob while

 

 

while in PILOT position

 

in PILOT position

 

4.

Air in gas lines when in-

4.

Continue holding down

 

 

stalled

 

control knob. Repeat ignit-

 

 

 

 

ing operation until air is

 

 

 

 

removed

 

5.

Depleted gas supply (pro-

5.

Contact local propane/LP

 

 

pane/LP gas)

 

gas company

 

6.

ODS/pilot is clogged

6.

Clean ODS/pilot (see

 

 

 

 

Cleaning and Maintenance,

 

 

 

 

page 23) or replace ODS/

 

 

 

 

pilot assembly

 

7.

Gas regulator setting is not

7.

Replace gas control

 

 

correct

 

 

24

www.fmiproducts.com

121353-01H

TROUBLESHOOTING

Continued

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

ODS/pilot lights but flame

1. Control knob not fully

1.

Press in control knob fully

goes out when control knob

 

pressed in

 

 

is released

2. Control knob not pressed in

2.

After ODS/pilot lights, keep

 

 

long enough

 

control knob pressed in 30

 

 

 

 

seconds

 

3.

Equipmentshutoffvalvenot

3.

Fully open equipment shut-

 

 

fully open

 

off valve

 

4.

Pilot flame not touching

4.

A) Contact local natural or

 

 

thermocouple, which allows

 

propane/LP gas company

 

 

thermocouple to cool, caus-

 

 

 

 

ingpilotflametogoout.This

 

B) Clean ODS/pilot (see

 

 

problem could be caused by

 

Cleaning and Maintenance,

 

 

one or both of the following:

 

page 23) or replace ODS/

 

 

A) Low gas pressure

 

pilot assembly

 

 

B) Dirty or partially clogged

 

 

 

 

ODS/pilot

 

 

 

5.

Thermocouple connection

5.

Hand tighten until snug,

 

 

loose at control valve

 

then tighten 1/4 turn more

 

6.

Thermocouple damaged

6.

Replace pilot assembly

 

7.

Control valve damaged

7.

Replace control valve

 

 

 

 

Burner does not light after

1. Burner orifice clogged

1.

Clean burner (see Cleaning

ODS/pilot is lit

 

 

 

and Maintenance, page 23)

 

 

 

 

or replace burner orifice

 

2.

Inlet gas pressure is too

2.

Contact local natural or

 

 

low

 

propane/LP gas company

 

3.

Thermopile leads discon-

3.

Reconnect leads (see Wir-

 

 

nected or improperly con-

 

ing Diagram, page 24)

 

 

nected

 

 

 

4.

Burners will not come on in

4.

Replace battery in transmit-

 

 

remote position

 

ter and receiver

 

 

 

 

Delayed ignition burner

1. Manifold pressure is too

1.

Contact local natural or

 

 

low

 

propane/LP gas company

 

2.

Burner orifice clogged

2.

Clean burner (see Cleaning

 

 

 

 

and Maintenance, page 23)

 

 

 

 

or replace burner orifice

 

 

 

 

Burner backfiring during com-

1. Burner orifice is clogged or

1.

Clean burner (see Cleaning

bustion

 

damaged

 

and Maintenance, page 23)

 

 

 

 

or replace burner orifice

 

2.

Damaged burner

2.

Replace damaged burner

 

3.

Gas regulator defective

3.

Replace gas control

121353-01H

www.fmiproducts.com

25

TROUBLESHOOTING

Continued

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

 

 

 

 

 

Slight smoke or odor during

1.

Not enough air

1.

Check burner for dirt and

initial operation

 

 

 

debris. If found, clean

 

 

 

 

burner (see Cleaning and

 

2.

Gas regulator defective

 

Maintenance,page 23)

 

2.

Replace gas control

 

3.

Residues from manufac-

3.

Problem will stop after a few

 

 

turing processes and logs

 

hours of operation

 

 

curing

 

 

 

 

 

 

 

Moisture/condensation no-

1.

Not enough combustion/

1.

Refer to Air for Combustion

ticed on windows

 

ventilation air

 

and Ventilation require-

 

 

 

 

ments (page 6)

 

 

 

 

 

Heater produces a whistling

1.

Turning control knob to HI

1.

Turn control knob to LO

noise when burner is lit

 

position when burner is

 

position and let warm up for

 

 

cold

 

a minute

 

2.

Air in gas line

2.

Operate burner until air is

 

 

 

 

removed from line. Have gas

 

 

 

 

line checked by local natural

 

3.

Air passageways on heater

 

or propane/LP gas company

 

3.

Observe minimum installa-

 

 

blocked

 

tion clearances (see pages

 

4.

Dirty or partially clogged

 

9 through 12)

 

4.

Clean burner (see Cleaning

 

 

burner orifice

 

and Maintenance,page 23)

 

 

 

 

or replace burner orifice

 

 

 

 

 

Whitepowderresidueforming

1.

When heated, vapors from

1.

Turn heater off when us-

within burner box or on adja-

 

furniture polish, wax, carpet

 

ing furniture polish, wax,

cent walls or furniture

 

cleaners, etc. may turn into

 

carpet cleaners, or similar

 

 

white powder residue

 

products

 

 

 

 

 

Remote does not function

1.

Battery is not installed. Bat-

1.

Replace 9-voltbatteries

 

 

tery power is low

 

in receiver and hand-held

 

 

 

 

remote

Heater produces a clicking/ ticking noise just after burner is lit or shut off

1.Metal expanding while heating or contracting while cooling

1.This is normal with most heaters. If noise is excessive, contact qualified service person

26

www.fmiproducts.com

121353-01H

TROUBLESHOOTING

Continued

WARNING: If you smell gas

Shut off gas supply.

Do not try to light any appliance.

Do not touch any electrical switch; do not use any phone in your building.

Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

If you cannot reach your gas supplier, call the fire department.

IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaning supplies, paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles, etc., create fumes. These fumes may mix with combustion air and create odors. These odors will disappear over time.

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

 

 

 

 

 

Heater produces unwanted

1.

Heater burning vapors from

1.

Open window and venti-

odors

 

paint, hair spray, glues,

 

late room. Stop using odor

 

 

cleaners, chemicals, new

 

causing products while

 

 

carpet, etc. (See IMPOR-

 

heater is running

 

 

TANT statement above)

 

 

 

2.

Gas leak. See Warning

2.

Locate and correct all leaks

 

 

statement at top of page

 

(see Checking Gas Con-

 

 

 

 

nections, page 15)

 

 

 

 

 

Heater shuts off in use (ODS

1.

Not enough fresh air is

1.

Open window and/or door

operates)

 

available

 

for ventilation

 

2.

Low line pressure

2.

Contact local natural or

 

3.

ODS/pilot is partially

 

propane/LP gas company

 

3.

Clean ODS/pilot (see

 

 

clogged

 

Cleaning and Maintenance,

 

 

 

 

page 23)

 

 

 

 

 

Gas odor even when control

1.

Gas leak. See Warning

1.

Locate and correct all leaks

knob is in OFF position

 

statement at top of page

 

(see Checking Gas Con-

 

2.

Control valve defective

 

nections, page 15)

 

2.

Replace control valve

 

 

 

 

 

Gas odor during combustion

1.

Foreign matter between

1.

Take apart gas tubing and

 

 

control valve and burner

 

remove foreign matter

 

2.

Gas leak. See Warning

2.

Locate and correct all leaks

 

 

statement at top of page

 

(see Checking Gas Con-

 

 

 

 

nections, page 15)

121353-01H

www.fmiproducts.com

27