Monitor GF3800 Building instructions

MONITOR HEATINGSYSTEMS
Table of Contents
Section 1: Description
1-1 Specifications(GF3800)
1-2 SpecialFeatures(GF3800)
1-3 Safety Features(GF3800)
1-4 Specifications (GF1800)
1-5 SpecialFeatures (GF1800)
1-6 Safety Features (GF1800)
1-7 Manual Gas Valve
1-8 Automatic Gas Valve
1-9Gas ControlValve
1-10 Burner(GF3800)
1-11Orifice(GF3800)
1-12 Burner (GF1800)
1-13 Orifice (GF1800)
1-14 IgnitionPlugUnit(GF3800)
1-15 IgnitionTransformer(GF3800)
1-16 Ignition PlugUnit(GF1800)
1-17 IgnitionTransformer (GF1800)
1-18 FlameDetector
1-19CombustionBlower(GF3800)
Page 1~12
1-20HeatExchanger
1-21 Flue Pipe
1-22 Air Circulation Fan
1-23 Air PressureSwitch
1-24 OverheatProtectorSwitch(GF3800)
1-25ThermalFuse(GF3800)
1-26 Overcurrent Fuse
1-27 ElectricalSystem
1-28 Microprocessor
1-29 TemperatureSensor
1-30 SafetyMechanisms
1-31 ClothCoveredExhaustPipe
1-32 Air Circulation Fan Guard
1-33 CombustionBlower (GF1800)
1-34 OverheatProtectorSwitch (GF1800)
1-35 ThermalFuse (GF1800)
Elements of combustionsystem(GF3800)
Elements of combustionsystem (GF1800)
Section 2: Installation
2-1 NoticeBeforeInstallation
2-2 Heaterinstallation
ApplicableWallThickness of FluePipe
2-3 FluePipeClearances
2-4 Installing an Extension Kit
2-5 Gas Connection
2-6Gas Conversion
Gas ConversionProcedure(GF3800)
Page 13~30
2-7 HighAltitudeInstallation(GF3800)
2-8 ManifoldPressureReadings(GF3800)
Gas ConversionProcedure (GF1800)
2-9 HighAltitudeInstallation (GF1800)
2-10ManifoldPressureReadings (GF1800)
Instructions for Manifold PressureAdjustments
2-11Backguard(GF3800)
2-12 Back guard (GF1800)
Section 3: Operation - Page 31~39
3-1 Introduction
3-2 OperatingSpecifications(GF3800)
3-3 OperatingSpecifications (GF1800)
3-4 OperatingControls and Indicators
3-5 Pre-operationCheckList
3-6 Operation
3-7 ManualHeaterOperation
3-8 AutomaticHeaterOperation
3-9 Programming the weekly timer
for automaticheateroperation
3-10 Heat Sensor
3-11MonitorShutdown
3-12Recoveryfrom a PowerFailure
3-13 RecoveryfromOverheatCondition
3-14 RecoveryfromBlownFuse
3-15 OperationControlsystem
GF3800/GF1800 Operation timing chart

MONITOR HEATINGSYSTEMS
Table of Contents
Section 4: Maintenance/Servicing Page 40~41
4-1 Cleaning the Cabinet 4-5 ElectricMotorMaintenance
4-2 Checking the FluePipe 4-6 Checking the BurnerFlame
4-3 Cleaning the Interior 4-7 Cleaning the Burner
4-4 Cleaning the BlowerGuard
Section 5: Troubleshooting Page 42~57
ResistanceValues (GF3800)
Component VoltageReadings(GF3800)
Resistance Values (GF1800)
Component VoltageReadings (GF1800)
Test PointVoltage(GF3800)
TestPointVoltage (GF1800)
Troubleshooting Diagrams(Mechanical)
TroubleshootingDiagrams(Electrical)
Indication of Failure mode
Section 6: ElectricalSystem Page 59~61
Schematics
Printed Circuit Board Wiring Diagram(GF3800)
Printed Circuit Board Wiring Diagram (GF1800)
SERVICEPARTS LIST- , Page 62~69
GF3800Serviceparts list
Exploded views and PartsList(GF3800)
GF1800 Serviceparts list
Explodedviews and PartsList (GF1800)

MONITORHEATINGSYSTEM
Section 1: Description I GFSSOO
1-1 SPECIFICATIONS
Model No.
Type of Appliance
InputRating
Output Rating
Electrical Rating
Power Consumption
Heated Air Delivery
'Flue PipeHole
Dimensions
Weight
Inlet Gas SupplyPressure
Manifold TestPressure
GF3800
Fan typedirect vent wallfurnace
High 38,OOOBTU/hour(Nat.), 34,500 BTU/hour(LP.)
Low 21.600BTU/hour(Nat.), 21,600 BTU/hour(LP.)
High 30,700BTU/hour(Nat.), 27,900 BTU/hour(LP.)
Low 17,500BTU/hour(Nat.), 17,500 BTU/hour(LP.)
120 V,60Hz, Less than 2 amperes
80 Watts
High 388 Cubic feet/minute
Low 300 Cubicfeet/minute
2.5 inchesdiameter
Height: 26.6inches(67.56cm)
Width: 28.7inches(72.90cm)
Depth:14.0inches(35.50cm)
82 pounds
Nat. Gas Max.10.5inchW.C.(267 mmHzO)
Min. 5.1 inchW.C.(130 mmHzO)
LP.Gas Max.13.0inchW.C.(330 mmH2O)
Min. 11.0 inchW.C.(279 mrnHsO)
Nat. Gas
LP.Gas
3.4 inchW.C.
3.15 inchW.C.
(86mmH2O)
(80mmH2O)
The minimum and maximum inlet gas supplypressure areforthe purpose of input adjustment.
1-2 SPECIAL FEATURES
AUTOMATIC IGNITION
MEMORY BACK UP:Set memory canbe kept in
case of powerfailure forupto30 minutes.
DUAL BLOWERS: Separatefans for combustion
and room air circulation.
THERMOSTATICALLY CONTROLLED:Adjusts to
the desiredroomtemperature.
BUILT-INTIMER:Heater will automatically
operate as programmed bythe user.
AUTOMATIC RESET AFTER POWER FAILURE:
Heater will automatically resume operation
after power is restored.
INDICATOR LIGHTS:Easy-to-seesignalsshow
when heater isin operation,whentimer is
activated, and when the burner is operating.
CLEAN OPERATION:Products of combustion are
vented outside.
CONSUMES NO ROOMAIR: Airfor combustion
is drawnfrom outside.
EASY INSTALLATION:Includes all partsrequired
for standard installation.
CHILD LOCK: Preventsaccidentaloperation and
prevents smallchildren from altering the controls.
1-3 SAFETYFEATURES
SAFE RE-LIGHTING:Heaterwill not restart until
its combustionchamber has cooled.
ELECTRICAL PROTECTION:Heaterautomatically
shuts offinthe unlikelyevent ofa malfunction in
the electricalcircuitry or disruption ofthe power
supply.
NO EXHAUST IN ROOM:Products of combustion
are dischargedoutdoors.
FLUE PIPE: Outside airis drawnthrough a pipe-
within-a-pipe ventingsystem.Thisprocess
preheats combustion airand regainsheatfrom
exhaust gases.
^CAUTION: ALTERNATEPOWERSOURCES
The MonitorGF3800 maynot operatewhen
powered by sourcessuch asan auxiliary
generator, UPS (Uninterrupted Power
Source), inverters, etc.
This unit maynot operate ona GFI (Ground
Fault Interrupter)power circuit.
Check withyourdealer for guidance on
specific applications.

MONITORHEATING SYSTEM
Section 1: Description IGFISOOI
1-4 SPECIFICATIONS
Model No.
Type of Appliance
Input Rating
OutputRating
Electrical Rating
Power Consumption
Heated Air Delivery
FluePipeHole
Dimensions
Weight
GF1800
Fan typedirectvent wall furnace
High 20,OOOBTU/hour(Nat.), 20,000 BTU/hour(LP.)
Low 12,600BTU/hour(Nat.)F 13,400 BTU/hour(LP.)
High 16,OOOBTU/hour(Nat.), 16,000 BTU/hour(LP.)
Low 10,200BTU/hour(Nat.), 10,900 BTU/hour(LP.)
120 V,60Hz, Less than 2 amperes
65 Watts
High 176 Cubicfeet /minute
Low 113 Cubicfeet/minute
2.5 inchesdiameter
Height:26.0inches(66.04cm)
Width: 20.9inches(53.09cm)
Depth:13.0inches(33.02cm)
55 pounds
Inlet Gas SupplyPressure
ManifoldTestPressure
Nat. Gas Max.10.5inchW.C.(267 mmHzO)
Min. 5.1 inchW.C. (130 mmHzO)
LP.Gas Max.13.0inchW.C.(330 mmH2O)
Min. 1 1 .0 inchW.C.(279 mmH2O)
Nat. Gas 3.15inchW.C. (80mmH2O)
LP.Gas 3.19 inch W.C. (SlmmHzO)
The minimum and maximuminlet gas supplypressure areforthe purpose of input adjustment.
1-5 SPECIAL FEATURES
AUTOMATIC IGNITION
MEMORY BACK UP:Set memory canbe kept in
case of powerfailure forupto30 minutes.
DUAL BLOWERS:Separate fans for combustion
and room air circulation.
THERMOSTATICALLY CONTROLLED:Adjusts to
the desiredroomtemperature.
BUILT-IN TIMER:Heater will automatically
operate as programmed bythe user.
AUTOMATIC RESET AFTER POWER FAILURE:
Heater will automaticallyresumeoperation
after power is restored.
INDICATOR LIGHTS:Easy-to-seesignalsshow
when heater isin operation, whentimer is
activated, and when the burner is operating.
CLEAN OPERATION:Products of combustion are
vented outside.
CONSUMES NO ROOMAIR: Airfor combustion
is drawnfromoutside.
EASY INSTALLATION:Includes all partsrequired
for standard installation.
CHILD LOCK: Preventsaccidentaloperation and
prevents smallchildren from altering the controls.
1-6 SAFETYFEATURES
SAFE RE-LIGHTING:Heaterwill not restartuntil
its combustionchamber has cooled.
ELECTRICAL PROTECTION:Heaterautomatically
shuts offinthe unlikelyevent ofa malfunction in
the electricalcircuitry or disruption ofthe power
supply.
NO EXHAUST IN ROOM: Products of combustion
are dischargedoutdoors.
FLUE PIPE:Outside airis drawnthrough a pipe-
within-a-pipeventingsystem.Thisprocess
preheats combustion airand regainsheat from
exhaust gases.
A CAUTION: ALTERNATE POWERSOURCES
The Monitor GF1800 maynot operatewhen
powered by sourcessuch asan auxiliary
generator, UPS (UninterruptedPower
Source), inverters,etc.
This unit maynot operate ona GFI (Ground
Fault Interrupter)power circuit.
Check withyourdealer for guidance on
specific applications.

MONITORHEATINGSYSTEM
Section 1: Description
1-7 MANUAL GAS VALVE
The Manual Gas Valve is includedwithHeater.
Connect the Manual Gas Valve togas inlet at rear
of the cabinet.
Connectionmust be checked for gas-tightness
by means of leakdetectorsolution,soap and
water, oran equivalentnonflammable solution, as
applicable.
Figure 1-1
1-8 AUTOMATIC GAS VALVE
The Automatic Gas Valve isa normallyclosed
two-stage,electro/mechanicaldevicewhich
eitherallows gasto flow tothe burner or prevents
it from doing so.
When the valve is energized, a spring-loaded
plunger is lifted to permit the flow of gas.
Removingpowerfrom the valve drops the
plungerdown into the inlet to prevent gas from
passing through.
Coil
Spring
Body
Valve
Figure 1-2
1-9GAS CONTROLVALVE
TheGas ControlValveprovidesconstant gas
pressure (volume) oftwo modes(High,Low) to
the burner.
Operation oftheGas Control Valve is controlled
by the Microprocessor.
The specifications oftheGas Control Valve are
as follows:
Type ofgas
Inlet Gas Supply
Pressure(in W.C.)
Manifold
Pressure(in W.C.)
Burn Mode
Natural
7.0
LP
11.0
GF3800
3.4 1.26 3.15 1.26
GF1800
3.15
High
1.34
Low
3.19
High
1.42
Low
Adjusting
Screw
Diaphragm -^
Body
Figure 1-3
Manifoldpressure canbe cheked by removing
brass fittingfrom endofGas Control Valve and
inserting a guagewith 1/8NPT fitting.

MONITORHEATINGSYSTEM
Section 1: Description IGFSSOOI
1-10BURNER
This burner isa Bunsentypewith a specially
structuredflameportsection,whichshapes and
positions the flame, soitcanbe wrapped bythe
secondary air flow, and burncompletely.
Secondary Air
Flame Port Section
Primary AirandGas
Mixture Burner Port assy
Flame Holder
BurnerChamber
Burner Assy
Secondary Air
Mixing Plate Orifice
1-4
1-11 ORIFICE NOTE:
The orifice is made of brass,inserted into theFor altitude applications over2,000feetrefer to
gas passage ofthe mixer, and fixed bythegas page 21.
pipe.
yfV WARNING:
Use of incorrect orifice will create a fire hazard
and damage unit.
Gas Type
Shape,Stamp
Orifice size
Natural
0
Dia 3.50mm
pi
[}
IP
D
Dia 2.64mm
r\
J
Figure 1-5

mum lun nnMi IIMVJ OTOI cm
Section 1: DescriptionlGFisoo
1-12BURNER
Thisburner isa Bunsentypewith a specially
structured flameport section, whichshapes and
positions the flame, soitcanbe wrapped bythe
secondary air flow, and burncompletely.
Secondary Air
Flame Port Section
Primary AirandGas
Mixture
Burner Port Assy
Burner Assy
MixingPlate
Burner Chamber
Secondary Air
OrificeFigure
1 -6
1-13 ORIFICE NOTE:
The orifice is made of brass,inserted into theFor altitude applications over2,000feetrefer to
gas passage ofthe mixer, and fixed bythegas page 22.
pipe.
/^WARNING:
Use of incorrect orifice will create a firehazard
and damage unit.
Gas Type
Shape, Stamp
Orifice size
Natural
h
IIS
V
Dia 2.38mm
LP
Dia 1.87mmFigure
1-7

MONITOR HEATING SYSTEM
Section 1: Description IGFSSOO
1-14 IGNITIONPLUGUNIT
The Electrode is appliedhighvoltage, and
discharges tothe Grounding Rodto ignite the
burner. The discharge gap between the Electrode
andthe Grounding Rodis 1/8"±1/32" (3.5mm±0.
8mm).
Flame Detector Rod
Electrode
Grounding Rod
1/8"±1/32"
(3.5mm ±0.8mm)
Figure 1-8
1-15IGNITIONTRANSFORMER
The Ignition transformergenerateshighvoltage
using 120VAC power,discharged bythe Ignition
plug to ignite the burner.
120VAC
Power
Terminal
*
*
r
IN
HighTensionCord
-
GroundingTerminal
Figure 1-9
/!\ WARNING:
Oo not touchwhen functioning. Highvoltage of
15 kV is generated.
6

MONITORHEATINGSYSTEM
Section 1: Description IGFISOOI
1-16IGNITIONPLUGUNIT
The Electrode is applied high voltage, and
discharges tothe Grounding Rodto ignite the
burner. The discharge gap between the Electrode
and the Grounding Rodis 1/8"±1/32" (3.5mm±0.
8mm).
Flame Detector Rod
1/8"±1/32"
(3.5mm ±0.8mm)
Electrode
Grounding Rod
1-17 IGNITION TRANSFORMER
The Ignition transformergenerates high voltage
using 120VAC power,discharged bythe Ignition
plug to ignite the burner.
Power
Terminal
i
/!\ WARNING:
Do not touch when functioning. Highvoltage of
15 kVis generated.
Figure 1-10
m
:*
i*
if*
HighTensionCord
GroundingTerminal
Figure 1-11

MONITOR HEATING SYSTEM
Section 1: Description
1-18FLAME DETECTOR
An Electrodewhichdetects that the burner has
been ignited,using the flame asa conductor,
instantaneouslydetectswhen the flame
extinguishes and shutsdown the Automatic
Valve.
1-19 COMBUSTION BLOWER (GF3800)
The CombustionBlower hasa two stageintake
fan. The intake fan draws in outside air thru the
flue pipe for internalcombustion.
Burnermodescontrol fan speeds andthe
SolenoidDamper inthe BlowerCasing.Those
functions areas follows:
COMBUSTION AIR CONTROL
Bum Mode Fan SpeedSolenoidDamper
HighHigh Off (open)
LowLowOn (close)
Setting air flow for SolenoidDamper onLow
mode shouldread 9±0.5 mmH2Ofor Nat. and
8.4±0.5mmH2OforLP.
1-20HEATEXCHANGER
An inlet atthetopofthe HeatExchangerpermits
the heated airto travelfrom the Combustion
Chamberinto the HeatExchanger.
An outlet, atthe bottom ofthe HeatExchanger,
permitscombustionby-products tobe vented to
the FluePipe.
While movingthrough the Heat Exchanger, the
hotair within the HeatExchangerheats the
outsidemetalwalls. Thehot metalwalls, in turn,
heat air that is pushedpast the HeatExchanger
andis circulatedinto the room. Anair baffle,
directly in front ofthe Heat Exchanger, deflects
the heated air downwards, and out, through the
Louverassembly.
1-21 FLUE PIPE
FluePipes are available in three (3) sizes.This
provides the flexibility to meet the installation
requirements for dwelling of variouswall
thicknesses.
The FluePipe istwo Sections,Fluepipe A and
FluePipe B.The FluePipe A contains a "T" -
shapedfittingconsisting of fourports.Thisside
is mounted onthe interiorwall ofthe dwelling.
The FluePipe B is ventedoutside the dwelling.
The FluePipeassemblyconsists oftwo concen-
tric tubes.Outside airis drawnthrough the cylin-
dricalspace between the tubes.
As the cool air enters, itis heated bythehotair
that is exiting the system.
A large-bore,flexiblehoseconnects theair inlet
port onthe FluePipe A with the Combustion
Blower, a cloth-covered metal pipe connects the
Heat Exchanger with the exhaust outlet onthe
Flue Pipe A.For different specs refer to installa-
tion Section page 16.
1-22 AIR CIRCULATION FAN
The Circulation Fanis driven bya two speed
motor andis designed to circulate the heated
room air. Ifthe heater is running inlow burn
mode, thefan also runs at low-speed; in high
burnmode, thefan advances to high-speed.
Operation ofthefanis controlled bythe
Microprocessor andFan ThermostatSwitch.
Physicallyassembled with a protective wire
cage, the entire fan assembly is secured toa
bracket onthe rear ofthe HeaterCabinet. A
sheet metalconduit, atthe rear ofthe Heater,
protects thefan wiring fromdamage.
8

MONITORHEATINGSYSTEM
Section 1: Description
1-23 AIR PRESSURESWITCH
This switchconsists ofa rubberdiaphragmwhich
senses changes inair pressure (itis connected to
the CombustionBlower andthe Heat Exchanger)
and a normally-open,microswitch.
Should an abnormalpressuredifferential exist,
the switch opens to disable the circuitrythatcon-
trols the supply of gas.Since the flow ofgasto
the Burner iscut off, the flameextinguishes, and
the code [E17] is indicated inthe digitaldis-
play. This safety mechanism canbe triggered by
several conditions:
- Leak,loose, or brokentubingwhichconnects
theAir PressureSwitchwith the Combustion
Blower orthe HeatExchanger.
- Clogged or blocked Air Line
- Blocked or cloggedFluePipe
- Intakeport ofthe CombustionBlower is
blocked
- CombustionBlower is inoperable
1-24 OVERHEAT PROTECTOR SWITCH (GF3800)
The normally-closedOverheatProtector Switch
safeguards the heatersagainstdamage dueto
overheating.
The Switch is rated 115°C (239°F). Should a
Monitoroverheat (internal temperaturesrise be-
yond 115°C/239°F) switchwillopen to shut down
the heater. After extinguishing the flame, the
code FE17J is indicated inthe digital display.
The OverheatProtectorSwitchwillautomatically
reset aftercoolingdown.Once the heater has
cooled to 90°C (194°F), the system canbere-
started. To restart the Monitor,proceed as fol-
lows:
A. Press ON/OFFSwitch to OFF.
B. Allowheater to cool.
C. Troubleshoot the cause ofthe overheat.
D. PressON/OFFswitch toON.
E. Proceedwithnormaloperation.
1-25 THERMALFUSE(GF3800)
Should OverheatProtectorSwitchmalfunction,
andthe heater be further overheated, the .ther-
mal fuse (internaltemperaturesrisebeyond 145
°C/293°F) melts and preventfurtheroverheating.
1-26 OVERCURRENT FUSE
2-amp., 125VAC, fuseprotects the heaterfrom
damage resulting frompoweroverloads. Inthe
event ofa powersurge or internalwiringhazards,
the fuseopens and power tothe heater iscut off.
1-27ELECTRICALSYSTEM
Electricalpower is supplied tothe Monitor torun
the Microprocessor andthe other electrically-
energizedcomponent.
Electrical operation ofthe Monitor canbe thought
of as having the followingeight(8)distinct
phases:plug in; turn on; pre-purge;ignition;pre-
combustion;heating;shutdown and post-purge.
1-28 MICROPROCESSOR
Principallyconsisting ofa 64-pinIntegrated
Circuit, the Microprocessorprovidessafety
timings, controls relays and providesclock and
thermostatfunctions forthe Monitorheater.
1-29TEMPERATURESENSOR
The sensorwhich is capable of sensingroom
temperature within a range of 42°F to 96°F, can
be leftmounted onthe back ofthe heatercabinet
orbe wallmounted.
Approximately 41/2' (about 140cm) of No.22 AWG
Wire is suppliedwith the sensor to facilitatewall
mounting the sensor ina favorablelocation.
1-30SAFETYMECHANISMS
Several safetymechanismshavebeen built into
the Monitor Heating System.Thesedevices
protect the useragainstpersonalinjury,protect
the heateragainstdamage, and shutdown the
heater ifa malfunction occurs.
1-31CLOTHCOVEREDEXHAUSTPIPE
Insulating cloth covers aretobe placed over all
metalsurfaces ofthe ExhaustLine during
installation. Since combustion by-products are
vented at elevated temperatures, the Exhaust
Pipe will become hot during operation. The
insulating clothcoversprotect the userfrom bum
hazards associated with accidental contact with
theseheatedmetalsurfaces.Duringinstallation
makesurethat all ExhaustLines are tight. Donot
operate the heater without the insulating covers.
1-32 AIR CIRCULATION FAN GUARD
This guard isan integral part ofthefan assembly.
The guardprotects the user agrainst physical
injurywhichcouldoccurfromaccidentalcontact
with revolving metal fan blade.
9

MONITORHEATING SYSTEM
Section 1: Description IGFISOOI
1-33 COMBUSTION BLOWER
The CombustionBlower hasa two stageintake
fan. The intake fan draws in outside air thru the
flue pipe for internalcombustion.
Burnermodescontrol fan speeds andthe
Solenoid Damper inthe BlowerCasing.Those
functions areas follows:
COMBUSTION AIR CONTROL
Burn Mode Fan SpeedSolenoidDamper
High High Off(open)
LowLow On(close)
Setting air flow for SolenoidDamper onLow
mode shouldread 5.5 ±0.5mmH2O for Nat. and
5.5±0.5mmHaO for LR
1-34OVERHEATPROTECTORSWITCH
The normally-closed Overheat Protector Switch
safeguards the heaters against damage dueto
overheating.
The Switch is rated 110°C (230T). Should a
Monitoroverheat(internaltemperaturesrise be-
yond 110°C/230°F) switchwillopen to shutdown
the heater. After extinguishing the flame, the
code [E17J is indicated inthe digital display.
The OverheatProtectorSwitch will automatically
reset aftercoolingdown.Once the heater has
cooled to 90 °C (194°F), the system canbere-
started. To restart the Monitor,proceed as fol-
lows:
A. PressON/OFFSwitch to OFF.
B. Allowheater to cool.
C. Troubleshoot the cause ofthe overheat.
D. PressON/OFFswitch toON.
E. Proceedwithnormaloperation.
1-35THERMALFUSE
ShouldOverheatProtectorSwitch malfunction,
andthe heater be furtheroverheated, the ther-
mal fuse(internaltemperaturesrisebeyond 167
°C/333°F) melts and preventfurther overheating.
10

AIR CIRCULATION FAN
COMBUSTIONCHAMBER
FLAMEDETECTOR
IGNITION /
TRANSFORMER/
BURNERASSY
FLUE PIPE
COMBUSTION
BLOWER
GAS CONTROL VALVE
AUTOMATIC GAS VALVE
INTAKE OUTDOOR AIR
t=C> EXHAUST
AIR DAMPER
SOLENOIDDAMPER
AIR PRESSURESWITCH
Figure 1-12 ELEMENTS OF COMBUSTION SYSTEM

10
AIR CIRCULATION FAN
HEATEXCHANGER
COMBUSTION
CHAMBER
FLAMEDETECTOR
FLUEPIPE
INTAKE OUTDOOR AIR
c=t> EXHAUST
AIR DAMPER
COMBUSTION
BLOWER
GAS CONTROL VALVE
AUTOMATIC GAS VALVE
SOLENOID DAMPER
BLOWERDAMPER
AIR PRESSURESWITCH
IGNITION
TRANSFORMER
BURNERASSY
O 3
^O
» 30
•u z
c/>
» m
Figure 1-13 ELEMENTS OF COMBUSTIONSYSTEM

MONITOR HEATING SYSTEM
Section 2: Installation
2-1 NOTICE BEFORE INSTALLATION
The heatermust be installed bya qualified service
personaccording to thisinstallationinstruction .
The installationmustconformwithlocalcodes or,
in the absence of localcodes, the Nationalfuel
Gas Code, ANSI Z223.1/NFPA54.
The installationmustconformwithlocalcodes or,
in the absence of localcodes, the current CAN1-
B149 INSTALLATIONCODE.
For mobilehousing and recreationalvehicle
installation the current Standard CSAZ 240.4
GAS EQUIPPED RECREATIONAL VEHICLES
AND MOBILEHOUSING.
A manufacturedhome(mobilehome) installation
mustconformwith the ManufacturedHome
Construction and Safety Standard,Title 24 CFR,
Part 3280, or, whensuch a standard isnot
applicable, the Standard for ManufacturedHome
installations,ANSI A 225.1/NFPA 501A.
Due to high temperatures, the appliance should
be located outof traffic and away fromfurniture
and draperies.
Children and adults should be alerted tothe
hazards of highsurfacetemperatures and should
stay away to avoidbums or clothing ignition.
Young childrenshould be carefullysupervised
when they areinthe sameroom asthe appliance.
Clothing or otherflammablematerialshould not
be placed onor near the appliance.
Make surethat the flow of combustion and
ventilation airisnot obstructed.
Any safety or guard removed for servicing an
appliancemust be replacedprior to operating the
appliance.
A\ WARNING
Do not operateappliancewith the panelremoved,
cracked or broken.Replacement ofthe panel
should be done bya licensed or qualified service
person.
Installation and repair should be done bya
qualified service person. The applianceshould be
inspected before useandat leastannually bya
qualified serviceperson.Morefrequent cleaning
may be required dueto excessive lint from
carpeting,beddingmaterial, etc. Itis imperative
thatcontrolcompartments,burners and
circulating air passageways ofthe appliance be
kept clean.
Do notuse this heater ifany part has beenunder
water. Immediately call a qualifiedservice
technician to inspect the heater andto replace
any part ofthe controlsystem andanygas control
which has beenunderwater.
The appliance,wheninstalled,must be electrically
grounded in accordance with local codes or,in
the absence of localcodes,with the National
ElectricalCode, ANSI/NFPA 70.
The appliance,wheninstalled,must be electrically
connected and grounded in accordancewithlocal
codes or,inthe absence of localcodes,with the
current CSA C22.1CANADIANELECTRICAL
CODE.
/^WARNING
THIS APPLIANCE IS EQUIPPED WITH A THREE-
PRONG (GROUNDING) PLUG FOR YOUR
PROTECTION AGAINST SHOCK HAZARD AND
SHOULD BE PLUGGED DIRECTLY INTO A
PROPERLY GROUNDED THREE-PRONG
RECEPTACLE. DONOTCUTOR REMOVE THE
GROUNDING PRONG FROM THIS PLUG.
ZL WARNING
IN MANUFACTURED/MOBILE HOMES WIRED
FOR 120/240V,ENSURETHAT THE GF3800/GF1800
IS ONLY PLUGGED INTO A 120 VOLT CIRCUIT.
/K CAUTION
Before converting the GF3800/GF1800 gas type
(to LiquidPropane orNat Gas), Read instructions
in Section 2, Page 21, 22.
For manufacturedhome(USAonly) or mobile
home or residentialinstallationconvertible foruse
with natural gasand liquefied petroleum gases
when provision is made forthe simpleconver-
sion from onegastothe other.
13

MONITOR HEATING 5Y5I tM
Section 2: Installation
2-2 HEATERINSTALLATION
In choosing a location forthe Heater, the following
guidelinesmust be considered:
• Install the Heaterwherethere areno obstacles
in front ofitand where it will mosteffectively
warm the room.
•Donot install the Heater near a door orin drafty
location.
1
Install the Heater to permit easy access tothe
room's gas cock, andthe powerreceptacle.
1
Donot installnearstairs oran emergencyexit.
1
Exhaustpipemust be keptclear of flammable
materials. ...
1
1
KeepHeaterclean anddonot store any
flammableitems onor near the Heater.
• ThisHeater isnot designed tobe built in.
ITI
Keep flammablematerials,trees,shrubsetc.
away from flue pipe.
1
Donot vent unitintootherrooms.Fluepipe
must be outside.
1
Donot install nor exhaust the fluepipeinto a
crawl space or underneathfloor nor into a flue
or chimney
X
-Flue
or
Chimney
•The area around the heater should be free of
obstaclesthatmightinterferewith the free flow
of air. Allow the clearancesshown inthe
illustration.
12- (30cm): GF1800
24" (61cm):GF3800
51/2-
(13.5cm)
(15.24cm)
39"
(99.06cm)
14

MONITOR HEAT1NU bYb I hMb
Section 2: Installation
If the unit is installed so that itis enclosed on both sides
and top, the following instructions shall be carried out.
With the side andtop clearances as shown in Fig. 2-1
the Monitor shall notbe placed so that its front surface
is inside ofthe enclosure.
6"min
(15.24cm)
(13.Scm)
Fig.2-1
GF1800
Fig. 2-2
•The heater maybe installed on combustible
flooring onthe metal tray provided.
NOTE: Usethe cardboard template providedwith
the Heater for flue pipelocation.
Just in case the template was misplaced, the
approximate flue pipe hole locationmeasurements
are as follows:
Back of Heater
opening,whichconnects
to the FluePipe.
The center ofthe Joint Rpe
opening, which connects
to theRue Pipe.
Back of Heater
9"
TV,'
10V4-
Fuel Inlet
GF1800
r
Floor
»The wall where fluepipehole will becut should
be free of plumbing pipes, electrical wires,
studs, air ducts and other obstacles.
15

MONITOR HEATING SYSTEMS
Section 2: Installation
Applicable WallThickness of FluePipe.
The fluepipeattached tothe heater canbe installed
in the wallthicknessfrom 0.6in.(1.5cm)up to
8.5in.(22cm).
In case the flue pipewill be installed inthe wallthick-
ness more that 8.5in., the optional part, FluePipe Kit
should be used.
Forthe types of fluepipekits and theirapplicable
wall thickness,pleaserefer to Table 2-1.
Standard Flue
Pipe
MediumAdjustable
Flue Pipe Kit
(P/No. : 8051)
Thickness of walls
1.5cm~1 2.5cm
0.6in~5in
Thickness of walls
12.5cm~22.0cm
5in~8.5in
Thickness of walls
22.0cm~31 .5cm
8.5in~12.5in
Flue Pipe A
/Sleeve Nut
r> /Flue Pipe B
Since the installing
dimension cannot
be decrease to less
tnan 5in.
(12.5cm), fixthe flue
pipe by using the
Sleeve Nut attached
tothe heater.
Wall Thickness 1.5 cm- 12.5 cm
Flue Pipe A
Flue Pipe B
Wall Thickness 12.5 cm - 22.0 cm
FluePipe A
Medium Adjustable
Flue Pipe B
(P/No. : 8051)
Sr- WallThickness22.0 cm- 31.5cm
LongAdjustable
FluePipe Kit
(P/No. : 8052)
Thickness of walls
31 .5cm~50.5cm
12.5in~20in
Flue Pipe A
Relay Pipe(P/No. : 8052)
Wall Thickness
31.5cm~50.5cm
Table. 2-1
A CAUTION
Please be sure to observe the instruction forthe
types of FluePipe Kitand their installing wallthick-
ness.
Do not install any fuelpipe kit beyond its maximum
applicablewallthickness,since the connection of
FluePipe A withFluePipe B,or FluePipe A,B,and
Relay Pipewill be incomplete, it will create a hazard
because of exhaust gas leakage.
16

MONITOR HEATING SYSTEM
Section 2: Installation
2-3 FLUE PIPE CLEARANCES
• Ventterminalmust be located at least 3 feet above any forced air inletlocatedwithin 10 feet.
•The ventterminal ofa directventappliancewith an input of 50,000 Btuper hour or lessshall be
located at least 9 inchesfrom any opening throughwhichfluegases could enter a building, and
such an appliancewith an inputover50,000 Btuper hourshallrequire a 12-inchventtermination
clearance. The bottom ofthe ventterminal andtheair intakeshall be located at least 12 inches
above grade.
• Fluepipeinstallationsshouldprovide for venting toa confined spacethroughwhichthere isa free
flow of outdoorair.Clearances to adjacentwalls or obstaclesmustcomplywith the requirements
shown below.
FrontalClearance
&CAUTION:
Donot attachanything ontc
outlet ofthe flue pipe.
Overhead Clearance
GF3800:24-(61cm)
or more
GF1800:12'(30cm)
or more
| (13.5cm)
Body - " j~
Clamp
M
Heater -
_ . r J
GF3800:24-(61cm)
or more
GF1800:12"(30cm)
or more
_Jj13.5crn)
Clamp H
Heater
c
Non-combustible
~
Wal1
Combustible
/Jr 24"(61cfn)
" msmmifL
v more
-x/ ^2• (30cm)
/ or more
1 *
- Flue Pipe
Ground or slab surface
-- Wall
Any construction
3- above Flue Pipe
(7.5 must not come _
_ cm) within 24" (60cm)
or of front obstacle
more
«»[« — 24' (60cm) >
or more
T^_Flue Pipe
12"(30cm)
or more
Ground or slab surface
ide Clearance
Body
Clamp
Sjd(
CM
Heater- ] Fli
I" Wa
Front Obstacle
i obstacle
r
r (45cm)
more
L
n
ie Pipe
II
Figure 2-3
IMPORTANT:
(1) In areas of heavy snow falls, ground surface
clearance must be increased according to
average snow falls, to prevent flue pipe from
being buried.
(2) In open area with strong wind, a wind break
may be necessary.
r
z<» 'min .-
(61cm)
Long
Extension
kit
1
Must be higher.
Snow
Figure 2-4
NOTE: Unit should notbe vented through a window.
17