SAFETY ALERT SYMBOLThese symbols appear as important safety precautions and should be understoodand followed by the owner to assure safe operation of the heater.

For Quick ReferencePage

SECTION A: ^Important Caution 1SECTION B: Specifications 5

Special Features 5Safety Features 5

SECTION C: Tools Needed for Heater Installation • 6Accessories You May Need 7Window Installation 7Flue Pipe Extensions 8

SECTION D: Heater Installation 9Flue Pipe Clearances 10

SECTION E: Fueling 15Refueling 16Fueling Options Available 16External Tank Installation 16Empty Fuel Tank 19

SECTION F: Starting Instructions 20SECTION G: Adjusting Room Temperature 21SECTION H: Turning Off the Heater 21SECTION I : Relighting the Heater 21SECTION J: Programming the Heater 22

Setting the Clock 22Programming for Automatic Heater Operation 23Manual Operation 23

SECTION K: Protective Features 24Loss of Power-Automatic Reset 24Electrical Fuse 24Overheat Prevention 24

SECTION L: Care of the Heater 25SECTION M: Troubleshooting Guide 27

COPYRIGHT ̂ MONITOR PRODUCTS, INC.,

SECTION A

IMPORTANT CAUTION

AWARNINGUSE ONLY CRYSTAL CLEAR KEROSENE. NEVERUSE GASOLINE, WHITE GAS, CAMP FUEL OROTHER FLAMMABLE LIQUIDS. USE OF SUCHFUELS CAN RESULT IN AN EXPLOSIVE FIRE ANDCAUSE SEVERE INJURY.

KEROSENE ONLY

GAS

i\CAUTION1. Make sure that there is no fuel leakage from fuel tank and fuel pipe joint.

2. Make sure that flue pipe (exhaust pipe, air supply hose) is connectedproperly.

3. Keep heater clean and do not store any flammable items on or near theheater.

4. Don't use the heater for drying clothes.

5. Should anything abnormal occur in the heater, remain calm, turn it off (donot unplug) and contact your Monitor dealer.

6. Risk of burns.Flue pipe and louver may have high surfacetemperature.

7. Do not place yourself or others too close to the heater.

8. Installation of heater in extreme humidity or dust areas is notrecommended.Any removal of unit parts or remodeling is strictly forbidden.

9. Do not sit on the heater.Placing ornaments or plants on the heater is not recommended.Excess heat may cause damage to ornament or plant and overwateringor spilling of water may cause shock to you or damage to theheater.

10. In areas of heavy snow accumulation, flue pipe may need to be installed higher to avoid being buried.In open areas with strong wind, a wind break may be necessary to avoid exhaust gases being blownback into the intake and causing poor combustion.

L^_ 24"min

LongExtension^kit

7^ "nMu,^7

'• •": '•''.

\

st be higher.

:.•••.;•:?:';.::'::

Snow

11. Do not install nor exhaust the flue pipe into a crawl space or underneath floor nor into a flue or chimney.

X X-FlueorChimney

12. OPERATING ALTITUDES HIGHER LIMITSThis heater is designed to be used no higher than 3000FT above sea level. Do not operate at altitudeshigher than 3000FT. above sea level.

13.OPERATING TEMPERATURE LIMITSPlease use the Monitor within the range of temperatures indicated by the shaded area shown on the graphbelow.

Operating Temperature Limits

-10 0 20

Inside Area Temperature (T)

40 60

Point AInside Area Temperature — 4°FOutside Temperature — 22°F

Point BInside Area Temperature 60°FOutside Temperature — 40°F

SECTION BSPECIFICATIONSModel Monitor 422

Fuel Type Crystal Clear KeroseneHeater Efficiency 93%Heat Rating High: 22,000 BTU/hour

H.Medium: 17,400 BTU/hourLMedium: 11,700 BTU/hourLow: 9,600 BTU/hour

Heater Output High: 20,400 BTU/hourH.Medium 16,200 BTU/hourL.Medium: 10,900 BTU/hourLow: 8,900 BTU/hour

Fuel Tank 1.32 Gal Ions; Separate tank optionalFuel Consumption High: 0.164 Gallon/hour

H.Medium: 0.13 Gallon/hourL. Medium: 0.09 Gallon/hourLow: 0.07 Gallon/hour

Power Source 120 Volts AC; 60 HzPower Consumption Ignition: 250 Watts

Operation: 55 Watts (Average)Heated Air Delivery High: 176 Cubic feet/minute

H.Medium: 176 Cubic feet/minuteL.Medium: 113 Cubic feet/minuteLow: 113 Cubic feet/minute

Vent Pipe Hole 2K-inches DiameterDimensions Height: 25.6 inches

Width: 20.9 inchesDepth: 12.4 inches

Weight 55 Pounds, empty* When considering heat of condensation is lost.

SPECIAL FEATURESthen net efficiency is 87%.

SAFETY FEATURESAUTOMATIC IGNITIONMEMORY BACK UP: Set memory can be kept in case

of power failure for up to 5 minutes.DUAL BLOWERS: Separate fans for combustion and

room air circulation.THERMOSTATICALLY CONTROLLED: Adjusts to the

desired room temperature.BUILT-IN TIMER: Heater will automatically operate as

programmed by the user.AUTOMATIC RESET AFTER POWER FAILURE: Heater

will automatically resume operation after poweris restored.

INDICATOR LIGHTS: Easy-to-see signals show whenheater is in operation, when timer is activated, andwhen the burner is operating in low, medium orhigh modes.

CHOICE OF FUEL SUPPLY:Built-in capsule tank orconnect to separate tank.

MULTIPLE HEAT EXCHANGER:Extracts 87% of heatfrom burner.

CLEAN OPERATION: Products of combustion are ventedoutside.

CONSUMES NO ROOM AIR :Airforcombustion is drawnfrom outside.

EASY INSTALLATION: Includes all parts required forstandard installation.

SAFE RE-LIGHTING:Heater will not restart until itscombustion chamber has cooled.

ELECTRICAL PROTECTION: Heater automatically shutsoff in the unlikely event of a malfunction in theelectrical circuitry or disruption of the power supply.

NO EXHAUST IN ROOM: Products of combustion aredischarged outdoors.

FLUE PIPE:Outside air is drawn through a pipe-within-a-pipe venting system. This process preheatscombustion air and regains heat from exhaustgases.

A CAUTION-ALTERNATE POWER SOURCESThe Monitor 422 may not operate when poweredby sources such as an auxiliary generator, UPS(Uninterrupted Power Source), inverters, etc. Checkwith your dealer for guidance on specificapplications.

SECTION CBefore installing your heater, be sure to check and comply with local and state building and electrical codesthat may apply to vented heaters in your area. Permanent wiring must be installed by a licensed electrician.

TOOLS NEEDED FOR HEATER INSTALLATIONCheck the following charts to be sure you have all the tools required to install your Monitor 422 Heating System.

STANDARD TOOLS APPLICATION

Phillips Head Screwdriver Installation of Heater PartsSteel Tape Measure Taking MeasurementsPen or Pencil Marking Drilling LocationExterior Caulk Caulking Between Packing and WallYardstick or Long Straight Edge Checking Angle of Hole for Flue PipeSoapy Water Lubricating Sleeve Hardware

SPECIAL TOOLS APPLICATION

Electric Drill Accommodating Hole Saw and Drill Bitinch Hole Saw Attachment Cutting Hole for Flue Pipe

Long K inch Drill Bit Drilling Pilot Hole Through WallLevel Checking Angle of Hole for Flue Pipe and for checking

heater level.

Fig. 1

ACCESSORIES YOU MAY NEEDCheck the list below and see your MPI dealer for accessories you may need or want for installation of your heatingsystem.

ACCESSORY APPLICATIONMedium Flue Pipe P/N 8206 For use where wall thickness is up to inchesLong Flue Pipe P/N 8005 For use where wall thickness is up to 20 inchesElectric Suction Pump P/N 1101 For use with large capacity tank where gravity feed is not

practicalWindow Installation Kit P/N 8208, 8209, 8001(See Window Installation below)

For use where "through-the window" flue pipe installationis desired

Extra Short, Short, Medium orLong Extension Kit or Elbow Adapter Kit(See Flue Pipe Extensions, page 8)

For use where "standard" installation is not practical

Fitting and Tank For large capacity fueling: To be dealer installed

WINDOW INSTALLATIONThe use of "through-the-window" installation for yourflue pipe will require a window installation kit and oneof the 4 (extra short, short, medium or long) extensionkits.In order to determine which extension kit is required,measure the distance from the floor to the TOP ofyour window sill (see Figure 2) and refer to the chartbelow.

IF THE MEASUREMENT IS:

7* ^

Fig. 2

YOU NEED:

20% to 25 inches Extra Short Extension Kit P/N 821225 to 33% inches Short Extension Kit P/N 8004

33K to 511A inches Medium Extension Kit P/N 8003

51M to86M inches Long Extension Kit P/N 8002

Elbow Adapter Kit P/N 8213

NOTE: Window kit installation is prohibited when the window is required to meet the local building code requirementsfor ventilation, emergency escape, or rescue.One or more Elbow Adapter Kit may be needed if heater is installed on inside wall.

FLUE PIPE EXTENSIONSFour standard extension kits are available from yourMonitor dealer. Most installations can de made withone of these kits. In special cases, custom installationsmay be required. These may be made with componentspurchased from your dealer.

In any installation the following limitations MUST NOTBE EXCEEDED:1. The total length of either the intake or exhaust pipe

should not exceed 10 feet with 3 elbows, 13 feet with2 elbows, or 16 1/2 feet with 1 elbow.

2. These elbows should include the one used at theheater but not the one on the air supply hose nor theintegral bends in the flue pipe. (See Figure 3)

3. The correct damper as shown on Page 13 must beused.

Exhaust Elbow Air Supply Hose

90° Joint Flue Pipe

Fig. 3 if Do not count

8

SECTION DHEATER INSTALLATIONStep 1: Fill Out Owner Registration CardRemove your owner registration card from the plasticenvelope containing the owner's guide. It should befilled out and mailed as soon as possible.

Step 2: Check for PartsBefore discarding packing materials, be sure you havelocated the following:

Flue PipeSleeve NutSpill TrayRoom Temp. Sensor (attached to the rear of theheater)Cardboard Template"STANDARD" DamperWall Clamps (2)Rubber PackingJoint PipeCloth Insulation CoverOuter FlangePipe HolderSmall Bag of Screws

Tapping, Type A —Tapping, Type A —

Small Plastic Syringe

For securingsleeve andwall clamps

For securingwall clamps

SIZE

Tapping Tapping

Fig. 4

Step 3: Choose a Location for Your HeaterIn choosing a location for your heater, the followingguidelines must be considered:• The heater MAY be installed on combustible floors.• The area around the heater should be free of

obstacles that might interfere with the free flow ofair. Allow the clearances shown in Figure 5.

39"

Fig. 5

• The heater must not be installed in a fireplace.• An AC wall outlet must be within reach of the

heater's power cord. Extension cords must not beused.

• The area outside where the flue pipe will emergeshould be free of foliage, fuel storage tanks andflammable objects. Air should circulate freely inthe area. Allow the clearances shown in Figure 6 onthe next page.

• The wall where flue pipe hole will be cut should befree of plumbing pipes, electrical wires, studs, airducts and other obstacles.

NOTE:Use the cardboard template provided with yourheater for flue pipe location.

FLUE PIPE CLEARANCESFlue pipe installations should provide for venting to an unconfined space through which there is a free flow ofoutdoor air. Clearances to adjacent walls or obstacles must comply with the requirements shown below.

Frontal Clearance

ACAUTION:Do not attach anything onto the outletof the flue pipe.

Combustible i ...... iilmimiiiiniilimi,llHmilimmiiiiiHiiiiiiinmiii

24" (60cm)or more

(13.5cm[

Body-Clamp

Heater

-WallAny constructionabove Flue Pipe

53*2" must not come _.(14 within 24" (60cm)cm) of front obstacle

.or4 24" (60cm) - —»more or more

-Flue Pipe~T

8' (20cm)or more

I Front Obstacle

Ground or slab surface

Overhead ClearanceCombustible -.miuiimuiiiMiiiiiiiiniiiiiimmiiii

Non-combustible

Combustible

Ground or slab surface

Side Clearance BodyClamp

Heater

Side obstaclei i i i i i i i i i i i i i m m n m m i i m i i i i i i i m i

18" (45cm)or more

Flue Pipe-Wall

IMPORTANT:(1) In areas of heavy snow falls, ground surface clearance

must be increased according to average snow falls, toprevent flue pipe from being buried.

(2) In open area with strong wind, a wind break may benecessary.

._ 24"min

LongExtensionkit

1Must be higher.

Snow

1

Fig. 6

10

Step 4: Drill a Pilot HoleNOTE: The following directions apply to "standard"

installation. For other methods, follow instructionsincluded with accessory kits.For walls up to 8% inches thick, use a shortflue pipe; for walls up to 14% inches thick, usea medium flue pipe; and for walls up to 20 inchesthick, use a long flue pipe.

Use the template to position the hole to be drilled.The "red dot" indicates the exact center of the hole.Using an electric drill and a long drill bit, make apilot hole through the wall (Figure 7). Be sure the holeextends through the outside wall.

Position of hole Template

Fig. 7

CAUTION: The opening on the inside wall should be approximately % inch higher than on the outside wall sothe flue pipe will slope downward when installed. This will allow condensation to drain outdoors.

Step 5: Cut the Hole for the Flue PipeUsing a hole saw attachment and an electric drill, cuta 2]4 inch diameter hole through the inner and outerwalls (Figure 8).

NOTE .-After cutting the inside wall, remove the insulation.Make sure there are no obstructions inside thewall, such as electrical wiring, water pipes, hotair ducts, etc.

Wall

Fig. 8

After the hole is cut, use a straight edge and a levelto be sure the inside opening is approximately % inchhigher than the outside opening.

11

Step 6: Install the Flue PipeFrom INSIDE the building, insert the flue pipe (witharrow pointing "up") into the hole. Fasten the flue pipe

NOTE: Top center port is an extra exhaust port.

with the 3 #8x%tapping screws(Figure 9). (See Figure4 for screw size and application.)

tapping screw

Fig. 9

Step 7: Install the Outer FlangeApply caulking material to the inside ridge of therubber packing (Figure 10).Holding the "Up" mark to the top, slide the rubberpacking onto the sleeve (caulk side to the wall).

NOTE: If it is difficult to slide the packing onto thesleeve, apply soapy water to the inside of thepacking.

Once the rubber packing is in place, slide the outerflange onto the sleeve with the conical side pointingoutward (Figure 11).Screw the flue pipe nut onto the flue pipe grooves,and tighten it firmly (Figure 11). Fig. 10

Rubber Packing

Outer Flange

Flue Pipe Nut.

Fig. 11

12

Step 8: Install the Spill TrayPlace the spill tray on the floor where you plan tolocate your heater.Remove the 2 sets of screws from the cabinet (Figure12).Position the heater on the spill tray so the legs of thecabinet fit into the circular indentations in the spil!tray (Figure 12).

Screws

Retainers

Fig. 12

Legs Spill Tray

Step 9: Level the cabinetIn order for heater to operate properly. It must bepositioned on a level surface. Ensure proper levelingby adjusting each leg and by using a carpenters levelto check both side to side, and front to back levelcondition.

Attach and tighten both sets of retainers and screws.

Step 10: Install the Joint PipeAt the rear of the heater, slide the large end openingof the joint pipe into the exhaust port outlet of theheater. Be sure the joint pipe is fully seated. Slide thefabric cover over the joint pipe (Figure 13).The o-rings that seal the joint pipe may be dry and tight.A little soapy water will ease installation.

Fabric Cover

Joint Pipe

Fig. 13

Step 11: Connect the Heater to the Flue PipeMove the heater toward the wall, guiding the joint pipeinto the center port of the flue pipe (Figure 14).Be sure the joint pipe is completely inserted into theflue pipe.

Step 12: Install the Air DamperIf installation is standard (that is no extension kits arerequired), place the air damper marked with a"STANDARD" over the air intake flange on the fluepipe (Figure 15).Place the hose band around the end of the air supplyhose. Push the air supply hose onto the air intakeflange and secure the hose with the hose band.

Air Supply Hose

Fig. 15

/VOTE'Do not place intake hose onto metal cappedexhaust port.

13

NOTE:The "STANDARD" damper is to be used withextension kits up to a total overall length of 20inches and a maximum of 3 bends (90° elbow).

Air damper is not used when extension kit or kitsexceed 20 inches.

Step 13: Install the Flue Pipe HolderPlace the ring of the flue pipe holder around the fluepipe. The other side of the holder hooks in a slotdirectly above the joint pipe at the rear of the heater(See Figure 16).

Step 15: Recheck the HeaterBefore proceeding, check again to be sure there areno flammable materials close to the heater. Check tobe sure the heater is level.Examine the flue pipe to be sure connections are tight.

Flue Pipe Holder

Fig. 16

Step 14: Secure the HeaterInsert the narrow ends of the 2 wall clamps into socketson the rear of the heater.Loosen the adjustment screws and extend the clampsuntil they touch the wall. Fasten the clamps to thewall with 2 #8x/i tapping screws.

NOTE: If use of wall clamps is not feasible orpractical, the heater should be secured byscrews to floor through punched holes in spilltray.

14

SECTION EFUELINGA WARNING: USE ONLY CRYSTAL CLEAR KEROSENE. NEVER USE GASOLINE, WHITE GAS, CAMP FUEL OR

OTHER FLAMMABLE LIQUIDS. USE OF SUCH FUELS CAN RESULT IN AN EXPLOSIVE FIRE ANDCAUSE SEVERE INJURY.

Step 1: Lift Out the Capsule Fuel TankTo fill with fuel, open the tank cover and lift out thecapsule fuel tank (see Figure 17). Turn the tank upsidedown, and remove the fuel cap. If the fuel cap isdifficult to unscrew, press the valve in the center, andremove.

Fig. 17

"FULL" Fuel Level

Fig. 18

Step 3: Reinstall the Capsule Fuel TankReplace and tighten the fuel cap. To insure proper fuelflow, be sure the cap is secured correctly.Install the tank with the arrow pointing forward, andclose the tank cover (see Figure 19).

Step 2: Using a SiphonA siphon is not included with your Monitor 422. Youmay obtain one from your Monitor dealer.To operate a siphon, insert the straight tube into thekerosene container. Insert the siphon's flexible hoseinto the capsule fuel tank (see Figure 18).Watch the fuel gauge on the capsule tank closely.As the fuel begins to near the full level (see Figure 18),stop the flow by turning the vent knob on top of thesiphon counter-clockwise. Remove the siphon slowlyto allow excess kerosene to drain back into thecontainer.

Fig. 19

NOTICE:Capsule tank use is NOT permittedMassachusetts and Connecticut.

in

15

REFUELINGNOTE: When the red light marked "Empty" illuminates

and flashes, a buzzer will sound for twentyseconds. The burner mode is changed to "Low"automatically, and then, the heater will shut offafter 30 minutes.The remaining burning time is indicated at thedisplay window.

30 min

20 sec

•Burner shuts off.Buzzer sounds

•Red light flashes.•Burner mode change to "Low"

Stepl:When the red light marked "Empty" illuminates andflashes, buzzer sounds, press the Operation Switchto put it in the "OFF" position and wait 15 minutes forthe heater to cool.

Step 2:If kerosene has accumulated in the spill tray or in thechamber which holds the capsule fuel tank, cleanwith a towel or rag. Remove any flammable itemssituated near the heater or flue pipe.

Step 3:Follow directions under "Fueling".

FUELING OPTIONS AVAILABLEIn addition to the standard capsule tank, the followingfueling options are available for use with your Monitor422.

EXTERNAL TANK INSTALLATION-Gravity FedWhen using external tank, changes in heater installationand pipe connections are required.

PREPARATION AT HEATERStepl:Remove the capsule fuel tank, and the fuel filter fromthe fuel sump tank (see Figure 20).

Fuel Filter

Fuel Sump Tank

Fig. 20

1. Gravity Fed Large Capacity External Tank:Practical for large heating needs where bulk deliveryof kerosene is available. This system should beinstalled by a qualified plumber or fuel supplytechnician.

2. Large Capacity External Tank with Pump: For largeheating needs where a gravity fed system is notpractical. An electric suction pump, especiallydesigned for use with your Monitor 422 heatingsystem, is available from your dealer.

When using a gravity fed tank or pumping system tosupply fuel, the inlet pressure to the heater must notexceed 2.5 psi.

NOTE: When using a separate fuel tank with yourMonitor 422, the "Empty" light will NOT signalan empty tank. Watch the gauge on the tank toavoid running out of fuel.

16

Step 2:Remove fuel with the siphon, remaining fuel must be sucked up with the plastic syringe (see Figure 21).

Fuel Sump Tank

Plastic Syringe

Fig. 21

Step 3:Wipe off the fuel sump tank with a towel or rag (seeFigure 22).

Fig. 22

Step 4:Remove the nut at the rear lower side of the heater.Collect fuel draining from the heater into a container.Hold the nipple with a wrench and loosen the nut withthe other wrench (see Figure 23).

Nipple

Wrench

Nut Container

Fig. 23

Remove guard bracket. Reinstall screws to keep valveretaining bracket tight.

17

Step 5:Insert the rubber plug into the disconnected pipe (seeFigure 24).Wipe off spilled fuel. Rubber Plug Bend the pipe aside

Fig. 24

Step 6:Remove the screws at the louver, and carefully removethe louver and front panel (see Figure 25).

Louver

Front Panel

Fig. 25

Step 7: Connect the plugs of red and brown wires marking "U" coming out from the printed wiring board forturning off the function of the fuel empty float switch (see Figure 26).

Plug For Short Circuit

Printed Wiring Board

Lead WiresColor: Red/BrownMarking : "U"

NOTE:Plug in male, female connectors to bypasscircuit.

Fig. 26

18

Step 8: Replace the front panel and the louver.

Step 9: Connect the fuel line from External Tank as follows.

NOTE: External tank installations must comply with theNational Fire Protection Association code NFPA31 or locally applicable codes, such as the 1979Uniform Mechanical Code No.5-1. that areconsistent with NFPA 31. Check with your localbuilding official.

To install a large capacity, gravity fed external tank,follow the instructions below, and refer to Figure 27for one possible installation. Use of a qualified installeris recommended.• Installation height of the bottom of the fuel tank

should be 16 inches or more above the floor surfaceon which the heater stands. This ensures that inletfuel pressure will be sufficient.

• The top of the fuel tank should be no higher thanQ1A feet above the floor under the heater. Heightsabove Q1A feet will exceed the 2.5 psi inlet limit, anda pressure reducer will need to be installed at or nearthe unit.

• The horizontal length of piping should not exceed

100 feet and should be free of sharp bends orobstructions.

• Piping should include no inverse U-type bends (toavoid air locks, which could block the fuel supply).

• Only %inch OD copper tubing should be used.The tubing should be bent carefully to avoid crimping.

• A fuel filter is recommended for use on the fuel linenear the tank, and a shut-off valve should be installedat the tank.

• Flare connections should be used at the fusible linkvalve connection on the heater and at the fuel filterto be installed at the tank.

• The fuel tank should be located no closer than 3feet to a source of heat.

• The fuel tank should have an opening for filling onthe top and a vent with a weather-proof cap on theside. On some tanks the vent and fill spout use thesame opening.

When using a gravity fed tank to supply fuel, the inletpressure to the heater must not exceed 2.5 psi.

Monitor 422

Fusible LinkValve Connection

Outdoor Fuel Tank

\ oShut-off Valve

(0.4m)r %" Flare Connection1 )i f I r— i r-3 1

maximum(2.6m)

%" OD Copper Tubing

NOTE: Fuel tank must be a minimum 3 feet away from flue pipe.Fig. 27

EMPTY FUEL TANKIf at any time during the operation of your heater youfind.• Burner Status indicators are blinking.• No heat• No flameYou can assume you are out of fuel.

Should this situation occur, take the following steps.

Step 1: Turn the Heater OffPress the Operation Button to put it in the "Off"position.Step 2: RefuelRefill your fuel tank with kerosene.Step 3: Turn the Heater OnPress the Operation Button to put it in the "On"position.

19

SECTION FSTARTING INSTRUCTIONSStep 1: Plug in the HeaterPlug in the AC cord, and route it away from the areaof the flue pipe. It is recommended that no otherappliance share the same outlet.

Step 2: Prime the HeaterIf using the heater for the first time, or if the heaterhas not been in operation for sometime, press the fuelset lever at the lower right hand side of the cabinetand release it slowly 2 or 3 times (Figure 28).

Step 3: Set "ON" ButtonDepress the operation button to put it in the "ON"position. The "Operation Lamp" lights indicating "SetRoom Temperature" and "present room temperature".Burner status lamps will light and ignition will startafter approximately three minutes. In 5 to 10 minutesthe circulation fan will start to operate, and warm airwill be felt coming through the cabinet grill.

Fuel Set Lever

Fig. 28

CAUTION: Do not continue pressing lever repeatedlyas this may cause overfilling of constant levelvalve inside.

NOTE:After a power outage, there is a three-minutewaiting period before the unit restarts, providedthe ON/OFF switch is in the "ON" position.

RUN AUTO EC°N°CMY EMPTY BURNER STATUS

PLUSSET ROOM

TEMPAMPM

1 1 1 1 - 58

OPERATION

ON/OFF AUTO ECONOMY

TIMER SELECTORCLOCK

SET 1st 2nd 3rd 4th

r—i

TIME/TEMP SET

TIME) | HOUR MINUTE SET CLEAR

CH CD O CHTEMP] ] UP DOWN

Fig. 29

20

SECTION GADJUSTING ROOM TEMPERATUREPressing either the "Up" or "Down" button will increaseor decrease the set temperature by 2 degree increments.Once desired temperature is displayed, press setbutton to lock into memory.The lights on the control panel will indicate the levelof heater operation — low, medium or high. The heater

will automatically change its heat output until thedesired room temperature is reached. While it cycles,you may hear the circulation fan change speed.Depending on the output required to maintain thedesired room temperature, the indicator lights willilluminate in the following pattern:

BURNER MODE

HighH. MediumL. MediumLowOff

LIGHT PATTERN

8 indicators — On6 indicators — On4 indicators — On2 indicators — On

*No lights on

The heater will shut itself off temporarily when the desired room temperature has been reached and restart automatically whennecessary to maintain room temperature.

NOTE: The heater may display room temperatureconditions, before shutting itself off.

4 degrees above set temperature, depending on heater load

INSTRUCTIONS FOR ECONOMY PLUS MODETo engage the economy plus mode, simply press down the button labeled "Economy Plus", to disengage pressagain.

NOTE:Operation switch must be "ON" and in manual mode.

This feature minimizes the "ON" and "OFF" cycling of the unit by allowing it to overshoot the set temperature by12 degrees instead of the normal 4 degrees.The advantages of this feature are to increase the overall efficiency of the unit by:1. Decreasing electrical consumption by decreasing the frequency of ignition cycles.2. Reducing heat loss during the prepurge and postpurge cycles.3. Reducing inefficient combustion associated with start up and shut down.4. Prolonging component life by decreasing expansion and contraction of internal parts.

NOTE: This feature could be compared to driving an automobile in stop and go traffic (regular mode) versushighway driving with cruise control engaged (Economy Plus mode).

SECTION HTURNING OFF THE HEATERTo turn off the heater, press the Operation Button toput it in the "Off" position (Figure 29).The operation lightwill go out, and the fuel flow will stop.After turning heater off the fans will continue to rununtil unit has cooled down to the point where thefans will automatically stop.

SECTION IRELIGHTING THE HEATERAutomatic controls prevent your heater from relightingafter the Operation Button has been set to "Off" untilheater has cooled.If the Operation Button is put in the "On" positionduring the cooling period, the heater will automaticallyrelight at the end of the period.

21

SECTION JPROGRAMMING THE HEATERSETTING THE CLOCKStep 1: Set the Timer SelectorPress the "Timer Selector" button, at which time the "Clock Set" light will illuminate. The LED indicator in theDisplay Window will show 88:88 at this point.

DISPLAY WINDOW

RUN AUTO EC°N°MY EMPTY BURNER STATUSr LUO —

SET f ROOMTEMP p^T—IT

AMPM

- O Q

OPERATION TIMER SELECTORCLOCK

ECONOMY SET 1st 2nd 3rd 4thPLUS i£m mmm _ »— —

TIMER SELECTOR

Fig. 30

TIME/TEMP SET

T|ME[ ] HOUR MINUTE SET CLEAR

en en a enTEMPj ] UP DOWN

Step 2: Set the HourPress the "Hour" Burton until the correct hour (eitherA.M. or PM.) appears in the window.

Step 3: Set the MinutePress the "Minute" Button until the correct timeappears in the window.Immediately press the "Set" Button.

NOTE: If the "Set" Button is not pressed within 1 minuteafter the time is set, the programming will becancelled.

NOTE: The "Hour" and "Minute" Buttons can be pressedand held or pressed momentarily to change thetime.

22

PROGRAMMING FOR AUTOMATIC HEATER OPERATIONThe Monitor 422 Heating System is capable of providingup to 4 different temperature settings for 4 differenttimes of the day. Not all 4 settings have to be used;2,3 or 4 settings can be used. A clear understandingof programming temperatures and time from the previouspages is needed before programming the automaticsettings. Also, the present time must have been set.

Step 1: Setting the 1st Time/TemperaturePressing the Timer Selector Button will illuminate theTime/Temp Light.Press the "Time" Button. Set the 1st desired time bypressing the "Hour" and "Minute" Buttons as describedunder, "Setting the Clock". Once the desired time "AMor PM" is displayed, press the "Set" Button to lockinto memory.Press the "Temp" Button. Set the desired temperaturefor the 1st time setting by using the "Up" and "Down"Buttons. Once the desired temp is displayed, press the"Set" Button to lock into memory.

Example: 1st Time/TempSAM 60°

Step 2: Setting the 2nd Time/TemperaturePress the Timer Selector Button again and the 2ndTime/Temp Light will illuminate.Follow same steps as above, except for 2nd time/temp.(ie;2nd 5PM 74Degrees)Repeat if a 3rd or 4th setting is desired.

Typical Example of a 4-time/temp selection:

1st2nd3rd4th

TIMESAM5PM11PM

5:30AM

TEMP60°74°70°76°

Step 3: Activate Automatic OperationFor the heater to operate on automatic once thesettings are in memory, simply press the "Auto" Buttonon the control panel. The "Auto" Light will illuminate toconfirm the heater is in the automatic operation mode.The heater will now maintain the programmed tempfor that time of day.

IMPORTANT:The heater will not operate in automaticunless the On/Off switch is in the "On"position.

Step 4: Clearing An Automatic SettingIf you wish to clear any automatic setting, press theTimer Selector Button to the appropriate setting andpress the "Clear" Button. A new setting will need to beentered otherwise the old setting will return after 30seconds.

MANUAL OPERATIONTo deactivate the automatic operation, simply pressthe "Auto" Button. The "Auto" Light will no longer beilluminated and the heater will run on a manual setting.This setting will be determined by the previous autosetting for that time of day, unless reset. The automaticsettings will remain in memory even if the unit isrunning in manual, unless there is a power outage formore than 5 minutes.

23

SECTION KPROTECTIVE FEATURESLOSS OF POWER-AUTOMATIC RESET:

NOTE:If power to the heater is interrupted, a thud-likenoise may be heard in the combustion chamber.This is nomal, and should not cause alarm.For power interruptions of up to 5 minutes, theset memory is kept and will resume operationautomatically with the set memory.For power interruptions beyond 5 minutes, yourheater will resume operation (after a 3 minutescool down period) in the MANUAL mode andmaintain room temperature according to thesetting temperature you've selected by using theslide selector for the reset temperature at thelower right hand side of the cabinet (Figure 31).When the TIME Button is pressed or the TIMERSELECTOR Button is pressed to illuminate theCLOCK SET Light, The Display Window willshow 88:88 indicating the need to reset theclock and re-program the heater for automaticoperation.

REMARK:In order to display reset temperature,it should be set before the heater is pluggedin and energized.New reset temperature selected after pluggedin will take effect only after a power loss, greaterthan five minutes.

RESET TEMPERATURE

50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80

Fig. 31

ELECTRICAL FUSEIn the unlikely event of a failure in the heater'selectrical system, a fuse will "blow" and interrupt thepower. Do not attempt to change the fuse.

Contact your MPI dealer for the name of a trainedand certified service representative in your area.

NOTE: Using a surge protector can minimize the chancesof a blown fuse caused by power surges.

OVERHEAT PREVENTIONIf your heater overheats, a thermostatic switch willautomatically stop the flow of kerosene and extinguishthe flame. The Burner status indicators are blinking.

Restore heater operation by following the stepsbelow.NOTE: Other symptoms listed in the trouble shooting

chart may cause burner status indicators toblink, besides an overheat situation.

Step 1: Turn the Heater OffPress the Operation Button to put it in the "Off" position.

Step 2: Allow the Heater to CoolWait approximately 30 to 45 minutes for the heater tocool completely.

Step 3: Unplug the Heater from the Wall Outlet.

Step 4: Remove ObstructionsThe overheated condition may be caused by obstructionsblocking the air flow to the heater. Check:• The front of the heater• The circulation fan (on the back of the heater).• The flue pipe (outside)

Step 5: Remove the LouverRemove the screws at the louver, and carefully removethe louver (Figure 32).

Louver

Fig. 32

Remove any accumulation of dust or other matter thatmay be covering the burn chamber and the heatexchangers inside the heater.Step 6: Replace the Louver

Step 7: Plug in the Heater

Step 8: Re-program the Heater

Step 9: Turn Heater On

/\ CAUTION: If the unit overheats a second time, turnit off and contact your MPI dealer forservice.

24

SECTION LCARE OF THE HEATERPush operation switch to "OFF" remove the AC Plug from the wall outlet and wait approximately 30 minutes forthe heater to cool before performing any of the following steps.

Step 1: Retrieving Objects from Inside the HeaterShould an object fall inside the heater, through thegrill openings, it must be removed to avoid affectingthe operation of the heater.After allowing the heater to cool, remove the frontcover panel. (See Step 5 of the previous section.)After the object has been removed, replace the frontcover before attempting to re-start the heater.

Step 2: Cleaning the CabinetWhen the cabinet is soiled, wipe it with a damp cloth.Restore the shine with a dry cloth.The use of abrasive household cleaners may dullthe finish.

Step 3: Checking the Flue PipeAt the beginning of each heating season, check theinside of the flue pipe. Foreign matter, spider webs,etc. must be removed.Be sure all fittings and joints are tight.

Step 4: Cleaning the InteriorRemove the Front Cover Panel (as described in Step5 of the previous section), and vacuum and wipe awaydust or other accumulation.Look for signs of fuel leakage around the joint pipeand the bottom of the cabinet. If fuel is detected, wipeit away and if necessary, contact your MPI dealer forany necessary repairs.

Step 5: Cleaning the Blower GuardHeating efficiency will be reduced if the blower guardat rear of the cabinet is blocked with dirt or dust.Blockage also produces a rise in heat that could causethe heater to shut off.Wipe the guard clean at least once a week.

Step 6: Cleaning the Fuel StrainerThe strainer of the fuel constant level valve should becleaned once a year and before storing heater at theend of each season.

Step 6-A: Valve Position-Open/CloseTurn knob of the shut -off valve installed at the fuel inletconnection to close the fuel line. (See Figure 27).

NOTE: The valve 'is located at the back of the heater.Turn counter clockwise to open, clockwise toclose. If threaded valve stem is sticking upabout yc, valve is open. If handle screws offstem, valve is closed.

Step 6-B:To catch the fuel which will drain out, set the drainguide made by cardboard below the strainer cover,with a small container under it. (See Figure 33)

Step 6-C:Loosen the two screws from the strainer cover andremove.

Step 6-D:Remove the strainer and wash with pure kerosene.If strainer is damaged, replace it.

Step 6-E:Return the strainer to its original position. Replacestrainer cover and screw to secure.

Step 6-F:Wipe away any spilled kerosene.

Step 6-G:Turn the knob of the shut-off valve to open. Check forkerosene leakage.

NOTE: Your Monitor may sometimes require moreservice than that shown above. Should this occurplease contact your Monitor Products, Inc., dealerfor service. A preseason maintenance check upcould be performed by your dealer to ensuretrouble free operation during the season. Askhim for details of his routine maintenanceprogram.

25

StrainerCover

Drain Guide Container

Fig. 33

Step 7: Storing the HeaterDuring summer months or long periods when yourheater will not be in operation, take the followingsteps:• Clean off the exterior cabinet with a damp cloth, andbrush or vacuum dust from the grills.• Cover the heater to protect it from dust.• DO NOT DISASSEMBLE the heater or extension

kits. Replacement of lost parts is an unnecessaryexpense.

• Shut off fuel supply to unit.• Disconnect or shut off power supply to unit to

prevent possible damage from lighting or powersurges.

26

SECTION MTROUBLESHOOTING GUIDEShould symptoms appear during the operation of your heater,normal operation, contact your MPI dealer for service.SYMPTOM CAUSE

refer to the chart below, If you are unable to restore

REMEDY

Heater does not go onwith operation switch.

Timer is in Auto.

AC cord is disconnectedfrom wall outlet. Powerfailure.Out of fuel.

Igniter Failure.

Water in fuel.

Clogged fuel strainer.

Heater extinguishes afterlighting.

Air pocket in fuel line.

Out of fuel.

Erratic changes in roomtemperature. (Slightdifferences in roomtemperature are normal.)

Poor location of heat sensor.Poor air movement.

Automatic timer does notstart heater.

Operation switch is notin the "ON" position.

Timer is in Manual.

Timer improperlyprogrammed.

Power interruption.

Flame does not reachnormal size.

Heater is not level.

Press Auto Button again.

Check plug and power source.

Reset circuit breaker.

Press the fuel set lever at the lowerright hand side of the cabinet. Check"Empty" light. If illuminated, refuel heater.If separate tank is used "Empty" lightdoes not operate.

Call your MPI Dealer for Inspectionand/or Replacement.Refill with fresh kerosene. Section L.Note: If strainer is severely clogged,contact your Monitor dealer to checkand clean the inside of constant levelvalve and pump screen.Clean fuel strainer.See "Care of the heater"Section L.

Press fuel set lever on lower right handside of the cabinet and release slowly2 or 3 times.

See "Empty Fuel Tank" Section E.

Relocate the sensor.Make sure clearances are kept aroundunit.Add room fans to better circulate airthroughout area.

Depress operation button to "ON"position.

Press Auto Button.

See "Programming for AutomaticOpearation" Section J.

See "Loss of Power", Section K.

Check level.

Poor flame, sounds ofcombustion, soot at therear of the heater.

Loose flue pipe. Allow heater to cool completely;tighten all connections.

Soot on inside of burnerwindow or exhaust portsof flue pipe.

Obstruction of combustionair intake system orcombustion fan failure.

Inspect air intake system and airsupply elbow for blockage. Clean witha brush,if necessary, and carefullyreconnect.

Heater switches fromautomatic to manual operation:display window shows 88 : 88.

Power interruption; automatic reset. See "Loss of Power",Section K.

NOTE:Several of the symptoms mentioned above may also be signs that your unit is due for routine maintenance,especially if it is several years old. Contact your Monitor dealer for an appointment.

27

Monitor 422™ Vented Heating Systems Limited WarrantyMONITOR PRODUCTS, INC., warrants eachMONITOR 422 vented heating system sold by it tobe free from defects in material and workmanship,under normal use and service, for one year afterthe date of original retail purchase, subject to theterm and conditions stated below. An extendedparts only warranty period of 36 months is providedfor combustion chamber and heat exchanger. Theremainder of the unit is subject to the 12 monthswarranty as provided herein.

1. WARRANTOR: This warranty is granted byMONITOR PRODUCTS, INC., P.O. Box 3408,Princeton, New Jersey 08543.

2. PARTIES TO WHOM WARRANTY IS EXTENDED:This warranty shall be extended only to theoriginal retail purchaser.

3. PARTS COVERED: All products and partsmanufactured by or for MONITOR PRODUCTS,INC., except as provided for herein. Replacementparts are warranted only for the balance of theoriginal warranty period.

4. PARTS NOT COVERED: The following parts arenot covered by this warranty: fuel filters, ventingkits, extension kits, fuses, and all parts damagedby lightning.

5. REMEDY: If, within the applicable warrantyperiod, any product or part included in thiswarranty proves to be defective in material and/orworkmanship, then MONITOR PRODUCTS, INC.,shall repair or replace, at its option, the defectiveproduct or part. Service at the point of installation(not including dealer travel time) will be providedat no charge to the customer, but must beperformed by a MONITOR PRODUCTS, INC.,dealer authorized to sell and service theMONITOR 422 vented heating system.

6. PROCEDURE FOR OBTAINING PERFORMANCEUNDER THIS WARRANTY: In order to obtainperformance of the obligations under thiswarranty, the original purchaser must promptly(in no event later than thirty (30) days afterdiscovery of the defect) notify the local MONITORPRODUCTS, INC., dealer authorized to sell andservice the MONITOR 422 vented heating system.Service will be provided during normal businesshours within a reasonable time after the dealerhas been notified of the need for service. If youare unable to locate a local MONITORPRODUCTS, INC., dealer authorized to sell andservice the MONITOR 422 vented heating system,call or write to: SERVICE DEPARTMENT,MONITOR PRODUCTS, INC., P.O. BOX 3408,PRINCETION, NEW JERSEY 08543, 908-329-0900.Any claim made under this warranty must beaccompanied by proof of original purchase datesales invoice or cancelled check showingserial number is satisfactory evidence.

7. SOLE REMEDY: The remedy and liability for anybreach of warranty, express or implied, set forthabove is the sole and exclusive remedy and thelimit of liability for any such breach.

8. EXCLUSIONS AND IMPLIED WARRANTIES: THISWARRANTY DOES NOT EXTEND TO ANYDEFECT DUE TO THE NEGLIGENCE OFOTHERS, FAILURE TO INSTALL, OPERATE ORMAINTAIN THE HEATER IN ACCORDANCEWITH THE INSTALLATION, OPERATION ANDMAINTENANCE INSTRUCTIONS FURNISHEDWITH EACH NEW HEATER, UNREASONABLEUSE, ACCIDENTS, ACTS OF GOD, FIRE, SNOW,FLOODS,LIGHTNING,ALTERATIONS,ORDINARYWEAR AND TEAR, THE USE OF UNAUTHORIZEDOR NON-STANDARDIZED PARTS ORACCESSORIES OR THE USE OF ANY FUELOTHER THAN GOOD QUALITY KEROSENESUCH AS 1K GRADE. ALL IMPLIEDWARRANTIES, IF ANY, ARISING UNDERSTATE LAW IN CONNECTION WITH THE SALESBY MONITOR PRODUCTS, INC., OF ANY NEWHEATER ARE LIMITED IN DURATION TO THEDURATION OF THIS WRITTEN WARRANTY.THERE ARE NO WARRANTIES, EXPRESS ORIMPLIED, OF MERCHANTABILITY, FITNESSFOR A PARTICULAR PURPOSE OR OTHERWISEWHICH EXTEND BEYOND THIS WARRANTYMONITOR PRODUCTS, INC., SHALL NOT BERESPONSIBLE FOR ANY INCIDENTAL ORCONSEQUENTIAL DAMAGES. WHETHER AS ARESULT OF BREACH OF WARRANTY,NEGLIGENCE, STRICT LIABILITY IN TORT OROTHERWISE.

NOTE:SOME STATES DO NOT ALLOW:(A)LIMITATIONS ON HOW LONG AN IMPLIEDWARRANTY LASTS;OR (B) THE EXCLUSIONOR LIMITATION OF INCIDENTAL ORCONSEQUENTIAL DAMAGES, SO THEABOVE LIMITATIONS OR EXCLUSIONS MAYNOT APPLY TO YOU.

9. NO VARIATION OF TERMS: THE PARTIES IN-TEND THAT THIS WARRANTY BE THE EXCLU-SIVE AND FINAL EXPRESSION OF THEIRAGREEMENT.No person has the authority to orally, in writingor in any other way vary the terms, conditionsor exclusions, of this warranty or to make anyexpress warranties other than those containedherein.

10. LEGAL RIGHTS: This warranty gives you specificlegal rights and you may also have other rightswhich vary from state to state.

MONITOR PRODUCTS, INC.P.O. BOX 3408

PRINCETON, N.J. 08543

PART NO.1154 COPYRIGHT © 1994 MONITOR PRODUCTS, INC.