NTI GF 200 User manual

* Lead Free
Keep this manual near this appliance for future reference
whenever maintenance or service is required.
* The wetted surface of this product contacted by consumable water contains
less than one quarter of one percent (0.25%) of lead by weight.
GF 200 Installation Manual
Combination gas-fired, condensing
instantaneous hot water heater and space heating fan coil
WARNING
This appliance (GF 200) is a combination gas-fired, condensing, instantaneous hot water heater
and space heating fan coil. The water heater is a CSA-certified product in its own right and, as
such, must be installed according to its installation and operation manuals (supplied).
This manual provides installation instructions for the GF 200, but defers to the water heater’s
manual(s) where appropriate. Throughout, in any conflict between instructions from this manual
and those from the water heater’s, the latter are assumed to be correct. When reading the water
heater’s manual, only sections pertaining to the NPE-240A model may apply.
If the information in these instructions is not followed exactly, a fire or explosion may result,
causing property damage, personal injury or death.
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any
other appliance.
What to do if you smell gas
●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.
Installation and service must be performed by a qualified installer, service agency or the gas supplier.
The installation must conform with local codes or, in the absence of local codes, the National Fuel
Gas Code, ANSIZ223.1/NFPA 54 and/or CSA B149.1, Natural Gas and Propane Installation Code.
When applicable, the installation must conform with the Manufactured Home Construction and
Safety Standard, Title 24 CFR, Part 3280 and/or CAN/CSA Z240 MH Series, Mobile Homes.

1
1. Important Information 2
1.1 Safety Information 2
2. About the Appliance 4
2.1 Items Included 4
2.2 Accessories 4
2.3 Specications 5
2.4 Front Panel 6
2.5 Components 7
2.6 Dimensions 8
2.7 Rating Plate 9
3. Installing the Appliance 10
3.1 Choosing an Installation Location 10
3.2 Installation Clearances 11
3.3 Connecting the Gas Supply 12
3.4 Connecting the Water Supply 16
3.5 Connecting the Condensate Drain 19
3.6 Venting the Appliance 21
3.7 Connecting the Power Supply 22
3.8 Setting the DIP Switches 22
3.9 Ducting the Appliance 24
3.10 Conguring the Appliance 25
4. Appendices 27
4.1 Blower Performance 27
4.2 Wiring Diagram 28
4.3 Ladder Diagram 29
4.4 Component Assembly Diagrams 31
4.5 Installation Checklist 35
4.6 Troubleshooting 36
Contents

1.1 Safety Information
The following safety symbols are used in this manual.
Read and follow all safety instructions in this manual
precisely to avoid unsafe operating conditions, re,
explosion, property damage, personal injury, or death.
DANGER
Indicates an imminently hazardous situation
which, if not avoided, could result in severe
injury or death.
WARNING
Indicates a potentially hazardous situation
which, if not avoided, could result in injury or
death.
If you smell gas:
●Do not try to light any appliance.
●Do not touch any electrical switches or use
landline phones.
●From a neighbor’s phone, call your gas provider
and follow their instructions.
●If you cannot reach your gas provider, call the re
department.
Do not use or store ammable products, such as
gasoline, solvents, or adhesives in the same room or
area as the appliance.
●The appliance has a main burner ame that can
turn on at any time and can ignite ammable
vapors. Vapors from ammable liquids can explode
and catch re, causing death or severe burns.
●Vapors cannot be seen and are heavier than air.
They can travel long distances along the ground
and can be carried from other rooms to the
appliance's main burner ame by air current.
●Keep all ammable products far away from the
appliance and store them in approved containers.
Keep the containers closed tightly and out of the
reach of children and pets.
DANGER
2
This appliance (GF 200) is a combination gas-red,
condensing, instantaneous hot water heater and
space heating fan coil. The water heater is a
CSA-certied product in its own right and, as such,
must be installed according to its installation and
operation manuals (supplied).
This manual provides installation instructions for
the GF 200, but defers to the water heater’s manu-
al(s) where appropriate. Throughout, in any conict
between instructions from this manual and those
from the water heater’s, the latter are assumed to be
correct. When reading the water heater’s manual,
only sections pertaining to the NPE-240A model may
apply.
As part of the GF 200’s manufacturing process, certain
portions of the water heater’s installation have been
completed. As such, some sections of this manual
dier signicantly from the corresponding
instructions in the water heater manual(s). In these
sections, it is intended that the installer follow the
specic instructions as described for the GF 200, while
following the general instructions in the water heater
manual(s).
Installation and service must be performed by a
qualied installer, service agency, or the gas supplier.
Failure to follow these and other included
instructions exactly could result in a re or explosion,
causing property damage, personal injury, or death.
1. Important Information CAUTION
Indicates a potentially hazardous situation
which, if not avoided, could result in property
damage.

●Do not store or use gasoline or other ammable
liquids near this appliance.
Doing so may result in re or explosion.
●Do not place combustibles, such as newspapers or
laundry, near the appliance or venting system.
Doing so may result in a re.
●Do not place or use hair sprays, spray paints, or
any other compressed gases near the appliance or
venting system, including the vent termination.
Doing so may result in re or explosion.
●Do not remove the front cover unless the power to
the appliance is turned o or disconnected.
Failure to do so may result in electric shock.
●Do not operate the appliance with the front cover
opened.
Doing so may result in re or carbon monoxide
(CO) poisoning, which may result in property
damage, personal injury, or death.
●Do not operate this appliance without proper
venting.
Doing so may result in re or carbon monoxide
(CO) poisoning, which may result in property
damage, personal injury, or death.
●Do not touch the internal components of the
appliance with wet hands.
Doing so may result in electric shock.
●Do not turn on the appliance unless the water and
gas supplies are fully opened.
Doing so may damage the appliance.
●Do not turn on the water if the cold water supply
shut-o valve is closed.
Doing so may damage the appliance.
●Do not use this appliance for anything other than
its intended purpose, as described in this manual.
●When servicing the controls, label all wires prior to
disconnecting them.
Failure to do so may result in wiring errors, which
can lead to improper or dangerous operation.
Verify proper operation after servicing.
●Do not use unapproved replacement or accessory
parts.
Doing so may result in improper or dangerous
operation and will void the manufacturer’s
warranty.
●Do not place anything in or around the vent
terminals, such as a clothes line, that could
obstruct the air ow in or out of the appliance.
●This appliance has been approved for use in the
USA and Canada only.
Using the appliance in any other country will void
the manufacturer’s warranty.
WARNING CAUTION
3

2. About the Appliance
2.1 Items Included
When you open the box, you will nd the
following items with the appliance. Check the box
for each of the following items before installing the
appliance.
Water Heater
Installation &
Operation Manuals
Kit Box
Conversion Kit Spare Parts
GF 200
Installation Manual
Clearances[Dégagements]
GF200
COMBINATIONGASWATERHEATER/CENTRALAIRHEATING
*COMBINAISONCHAUFFEE-EAUINSTANTANE/GENERATEUR
D'AIRCHAUD
#####
MadeinCanada
FabriquesauCanada
SerialNumber:#####
########## ##### #####
AIRFLOW
Thisapplianceisapprovedforupflowinstallation.
Cettefournaiseestapproveepourl'installationetcirculationd'airascendente.
Min.clearancetocombustibleconstruction:(in.)seediagram.
Degagementsminimumentrel'appareiletdesconstructionscombustibles(PO.)
Ventclearancetocombustibleconstruction(in.):0
Degagementdeventconstructionscombustibles(PO.):0
*Minserviceclearance
*Degagementmin.pourfinsd'entretienpourlesinstallations
C:COMBUSTIBLEFLOORS
RefertoInstallationManualforserviceclearancedetails
0
0
0
0
24*
C
ElectricalRating/CaracteristiqueElectrique
VOLTSFREQ.PHASE MCA MAX.CKT.BRK INDOORBLOWERMOTOR
12060Hz 113A 9.6A 3/4
FLA HP
Certifiedby
Certifiepar
NYThermalInc.30StonegateDr.,SaintJohn,NB,E2H0A4,Canada
Model
[Modele]
Fuel
[Gaz]
Altitude,ft
[Altitude,pi]
Input,MBH
[Entrée,kW]
MinMax
SpaceHeating
Capacity,MBH
[Capacitede
Chauffage,kW]
Nat. 19.9[5.83]200[58.61]
0-4500*
TGF-200
LP
DHWHeating
Capacity,MBH
[CapacitedeDHW
Chauffage,kW]
80[23.45]200[58.61]
FACTORYSETFORNATURALGAS
FieldconvertedtoPropaneGas
CONFIGURÉEAL'USINEPOURGAZNATUREL
Convertieaupropanesurplace
Date:________________________________Date:________________________________
GasPressure[PressionduGaz]Natural[Naturel]Propane
MaximumInletGasPressure[Pressionmaximaled'entréedugaz]
MinimumInletGasPressure[Pressionminimumd'entréedugaz]
ManifoldPressure[Pressiond'admission]
10.5"WC
3.5"WC
-0.58"WC
13"WC
8"WC
-0.02/-0.78"WC
ImportantInformation[RensignesmentsImportants]

UseforNaturalorLPGasonly.

MaximumWaterPressure=150psi

MaximumStaticPressure=0.8IN.W.C.

MaximumInletWaterTemperature=180°F

Thisappliancemustbeinstalledinaccordance
withlocalcodes,ifany;ifnot,followANSI
Z223.1/NFPA54orCAN/CSAB149.1,Natural
GasandPropaneInstallationCode,as
applicable.

UtilisezdesgazNaturelouLPseulement.

Pressiond'eaumax.=150lb/po²

Pressionstatiquemax.=0.8PO.D'EAU

Temp.maximaled'eaud'entrée=180°F

Cetappareildoitêtreinstalléconformémentauxcodes
locaux,lecaséchéant;sinon,suivezANSIZ223.1/
NFPA54ouCAN/CSAB149.1,gaznaturelet
propaneCoded'installation,lecaséchéant.
FORYOURSAFETY
Donotstoreorusegasolineorother
flammablevaporsandliquidsinthevicinity
ofthisoranyotherappliance.
POURVOTRESÉCURITÉ
Nepasentreposerouutiliserd'essenceoud'autres
vapeursetliquidesinflammablesàproximitédecet
appareiloudetoutautreappareil.
StandardANSIZ21.10.3/CSA4.3
GasWaterHeaters,VolumeIIIStorageWater
Heaters,withInputRatingsAbove75,000BTU
perHour,CirculatingandInstantaneous
CSAC22.2No.236/UL1995
HeatingandCoolingEquipment
*Refertowaterheaterratingplateunderaccesspanelontheoppositesideofthiscabinet.

OrificesnecessaryforLPconversionareprovided.

Failuretousethecorrectgascancauseproblems
whichcanresultindeath,seriousinjuryorproperty
damage

LesinjecturesnecessairesalaconversionauGPLsont
fournis.

Lefaitdenepasutiliserlebongazpeutcauserdes
problemesquipeuventmeneralamort,causerdesbessures
gravesouendommagerlapropriete
24*
24*
Waterheaterratingplatelocatedunderaccesspanelonoppositesideofcabinet.
20A
GF 200 Installation
Manual
2.2 Accessories
The following optional accessories are available for
the appliance:
Remote Controller 3 in Vent Termination
Caps
3 in Wall Flanges
4
KIT BOX

2.3 Specications
The following table lists the specications for the appliance. Additional specications about water, gas,
electric, and air supplies (venting) appear in the Installation section.
Item GF 200
Heat
Capacity
(Input)
Natural Gas Space Heating:
19,900 – 80,000 BTU/H
DHW Heating:
19,900 – 199,000 BTU/H
Propane Gas
Energy
Factor
UEF (for NG & LP) 0.96
EF (Canada) (for NG &
LP) 0.97
Flow Rate
(DHW)
35 °F (19 °C) Temp Rise 11.2 GPM (42 L/m)
45 °F (25 °C) Temp Rise 8.7 GPM (33 L/m)
67 °F (36 °C) Temp Rise 5.6 GPM (21 L/m)
Dimensions 17.75 in (W) x 38.0 in (H) x 40.0 in (D)
Weight 248 lbs
Installation Type Indoor
Venting Type Forced Draft Direct Vent
Ignition Electronic Ignition
Water Pressure 15 – 150 PSI
Natural Gas Supply Pressure
(from source)
See Water Heater Installation Manual (Supplied)
Propane Gas Supply Pressure
(from source)
Natural Gas Manifold Pressure
(min-max)
Propane Gas Manifold Pressure
(min-max)
Minimum Flow Rate* 0.5 GPM (1.9 L/m), < 0.01 GPM (0.04 L/m) with optional recirculation
mode.
Connection
Sizes
Cold Water Inlet 3/4in sweat joint
Hot Water Outlet 3/4in sweat joint
Gas Inlet 3/4in NPT
Power Supply Main Supply 120 V AC, 60 Hz
Materials
Casing Cold Rolled Carbon Steel
Heat Exchangers Primary Heat Exchanger: Stainless Steel
Secondary Heat Exchanger: Stainless Steel
Venting
Exhaust**
See Water Heater Installation Manual (Supplied)Intake
Vent Clearances
Safety
Devices
Flame Rod, APS, Ignition Operation Detector, Water Temperature High Limit Switch, Exhaust
Temperature High Limit Sensor, Power Surge Fuse
*Energy consumption will increase when the system is congured for recirculation.
**High temperature venting material may be required. See section 3.5 Venting the appliance for details.
5

a
b
c
d
e
f
g
h
i
j
k
2.4 The Front Panel
The front panel allows you to adjust the water
temperature and view the operating status or error
codes.
a
Error
g
N/A
A code will appear on the display
b
Hot Water Recirculation
h
Display
Recirculation Mode
c
Diagnostics button
i
Up button
For installers only Increases the temperature
d
Information button
j
Down button
Shows basic information Decreases the temperature
e
Reset button
k
Power button
Resets the water heater (When an error
occurs) Turns the water heater on or o
f
Combusting
When the gas burner is on
6

2.5 Components
The following diagram shows the key components of the appliance. Component assembly diagrams and
particular parts lists are included in the Appendixes.
Intake Air Duct
Exhaust Duct
Exhaust Limit Temperature Sensor
Exhaust Body
Ignition Transformer
Burner
Primary Heat Exchanger
Secondary Heat Exchanger
Flow Sensor
Condensate Trap
Front Panel
PCB Box
Water Adjustment Valve
Water Inlet Filter
Condensate Drain
Condensate Drain Lid
Combustion Fan Motor
Dual Venturi
Gas Pipe
APS (Air Pressure Sensor)
Buer Tank
Circulation Pump
Gas Valve
Gas Inlet Fitting
DHW Inlet Fitting
Field Wiring Panel
Recirculation Inlet Fitting
GF 200
DHW Supply Fitting
3-Way Valve Service Valve
7
Central Heating System Controller

2.6 Dimensions
The following diagrams show the dimensions of the appliance and the connections.
19.5in 495mm
16.4in
416mm
10.9in 276mm
10.5in 266mm
6.3in
160mm
4.7in
120mm
36.5in
927mm
19.6in 498mm
17.7in 450mm
37.2in
944mm
39.7in 1008mm
9.3in 236mm
12.9in 328mm
3.9in
100mm
6.4in
162mm
6.8in 173mm
38.0in
964mm
Inlet Conn. (3/4" Socket)
Outlet Conn. (3/4" Socket)
Line Voltage
Field Wiring
Gas Conn.
Condensate Conn.
**Inlet Connection is furthest to the back from the front of the appliance. Plumbing connections are possible from left or
right side of cabinet. See Plumbing Section for details.
Front
Top
Left Side
8

2.7 Rating Plate
This appliance comes from the factory congured for use with Natural Gas (NG). Before starting the
installation, check the rating plate located on the side of the appliance to ensure that it matches the gas type,
gas pressure, water pressure, and electrical supply available in the installation location. If the appliance does
not match each of these ratings, do not install the appliance. If conversion to Propane Gas is required, the
included gas conversion kit must be used. Refer to water heater installation manual for details.
WARNING
●Be sure the gas type and electricity voltage match the rating plate. Using a dierent gas type will cause
abnormal combustion and appliance malfunction.
●Using abnormally high or low AC voltage may cause abnormal operation, and may reduce the life
expectancy of this product.
Rating Plate, *Plaque Signalétique
Direct Vent Automatic Instantaneous Water Heater *Chauffe-eau instantané automatique à évent direct
For Indoor, Outdoor or Manufactured Home (Mobile Home) Installation *Pour installation dans une maison préfabriquée (mobile)
Navien, Inc.
20 Goodyear, Irvine, CA 92618
Tel: [phone]
Orifices necessary for LP conversion are provided. *Les injectures nécessaires à la conversion au GPL sont fournis.
Failure to use the correct gas can cause problems which can result in death, serious injury or property damage. *Le fait de ne pas
utiliser le bon gaz peut causer des problèmes qui peuvent mener à la mort, causer des blessures graves ou endommager la propriété.
Consult your installation manual for more information. *Consultez votre manuel d’installation pour plus d’information.
Suitable for combination water (potable) heating and space heating and not suitable for space heating applications only.
*Convient au chauffage combiné de l’eau (potable) et des locaux, mais non au chauffage des locaux seulement.
This appliance is certified for use at altitudes up to 4,500 ft (1,370 m) in accordance to the latest CAN/CGA 2.17-High Altitude Installation
procedures at normal manifold pressure. For installation instructions at altitudes higher than 4,500 ft, please contact Navien. *Cet appareil
est certifié pour une utilisation à des altitudes de 0 à 4,500 pieds (1,370 m) conformément aux toutes les procédures d’installation à haute
altitude CAN/CGA 2.17 à une pression normale. Pour les installations à élévations en haut de 4,500 pieds, appeler le bureau de Navien.
This appliance must be installed in accordance with local codes, or in the absence of local codes, the National Fuel Gas Code, ANSI
Z223.1/NFPA 54 or the CSA B149.1, Natural Gas and Propane Installation Code. *Cet appareil doit être installé selon les règlements
locaux, ou en l’absence de tels règlements, selon le National Fuel Gas Code, ANSI Z223.1/NFPA 54, ou les, Code d'installation du gaz
natural et du propane, CSA-B149.1.
Model No., *Numéro de modèle
NPE-210A
Max. Input Rating, *Entrée GPL max.
180,000 Btu/h
Recovery Rating, *Calibre de recouvrement
Max. Inlet Gas Pressure, *Pression max. de gaz d’entrée
Min. Inlet Gas Pressure, *Pression min. de gaz d’entrée
Manifold Pressure, *Pression d’admission
Electrical Rating, *Régime nominal électrique
Max. Water Pressure, *Pression d’eau max.
Type of Gas, *Type de gaz
NG
Min. Input Rating, *Débit calorifique max.
19,900 Btu/h
265 Gallons/Hour, *gallons/heures
10.5 Inches W.C. *pouces W.C.
3.5 Inches W.C. *pouces W.C.
-0.36 Inches W.C. *pouces W.C.
AC *c.a. 120 Volts 60Hz, less than 2 amperes, *Utilise moins de 2A
150 psi *lb/po2 ANSI Z21.10.3 · CSA 4.3-2011
FOR YOUR SAFETY *POUR VOTRE SÉCURITÉ
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other gas appliances. *Ne rangez
pas et n'utilisez pas d'essence ou d'autres liquides ou vapeurs inflammables près de cet appareil ou de tout autre appareil électroménager.
Clearances[Dégagements]
IFW-80-200
COMBINATIONGASWATERHEATER / CENTRAL AIR HEATING
*COMBINAISONCHAUFFEE-EAUINSTANTANE/ GENERATEUR
D'AIRCHAUD
#####
MadeinCanada
FabriquesauCanada
SerialNumber: #####
##### ##### ##### #####
AIRFLOW
Thisapplianceisapproved for upflow installation.
Cettefournaiseestapprovee pour l'installation et circulation d'air ascendente.
Min.clearancetocombustible construction: (in.) see diagram.
Degagementsminimumentrel'appareil et des constructions combustibles (PO.)
Ventclearancetocombustible construction (in.): 0
Degagementdeventconstructions combustibles (PO.): 0
*Minserviceclearance
*Degagementmin.pour fins d'entretien pour les installations
C:COMBUSTIBLEFLOORS
RefertoInstallationManual for service clearance details
0
0
0
0
24*
C
ElectricalRating/Caracteristique Electrique
VOLTS FREQ. PHASE MCA MAX.CKT.BRK INDOORBLOWERMOTOR
120 60 Hz 113A 9.6 A 3/4
FLA HP
Certifiedby
Certifiepar
NYThermalInc.30Stonegate Dr., Saint John, NB, E2H 0A4, Canada
Model
[Modele]
Fuel
[Gaz]
Altitude,ft
[Altitude,pi]
Input,MBH
[Entrée,kW]
Min Max
SpaceHeating
Capacity,MBH
[Capacitede
Chauffage,kW]
Nat. 19.9[5.83] 200[58.61]
0-4500*
IFW-80-200
LP
DHWHeating
Capacity,MBH
[CapacitedeDHW
Chauffage,kW]
80[23.45] 200[58.61]
FACTORYSETFORNATURAL GAS
FieldconvertedtoPropane Gas
CONFIGURÉEAL'USINEPOUR GAZ NATUREL
Convertieaupropanesur place
Date:________________________________ Date:________________________________
GasPressure[Pressiondu Gaz] Natural[Naturel] Propane
MaximumInletGasPressure [Pression maximale d'entrée du gaz]
MinimumInletGasPressure [Pression minimum d'entrée du gaz]
ManifoldPressure[Pressiond'admission]
10.5"WC
3.5"WC
-0.58"WC
13"WC
8"WC
-0.02/-0.78"WC
ImportantInformation[RensignesmentsImportants]

UseforNaturalor LP Gas only.

MaximumWaterPressure= 150 psi

MaximumStaticPressure= 0.8 IN. W.C.

MaximumInletWaterTemperature = 180°F

Thisappliancemustbe installed in accordance
withlocalcodes,if any; if not, follow ANSI
Z223.1/NFPA54orCAN/CSA B149.1, Natural
GasandPropaneInstallation Code, as
applicable.

UtilisezdesgazNaturel ou LP seulement.

Pressiond'eaumax.= 150 lb/po²

Pressionstatiquemax.= 0.8 PO. D'EAU

Temp.maximaled'eaud'entrée = 180°F

Cetappareildoitêtre installé conformément aux codes
locaux,lecas échéant ; sinon, suivez ANSI Z223.1 /
NFPA54ouCAN / CSA B149.1, gaz naturel et
propaneCoded'installation,le cas échéant.
FORYOURSAFETY
Donotstoreor use gasoline or other
flammablevaporsandliquids in the vicinity
ofthisorany other appliance.
POURVOTRESÉCURITÉ
Nepasentreposerou utiliser d'essence ou d'autres
vapeursetliquidesinflammables à proximité de cet
appareiloudetout autre appareil.
StandardANSIZ21.10.3/ CSA 4.3
GasWaterHeaters,Volume III Storage Water
Heaters,withInputRatings Above 75,000 BTU
perHour,Circulatingand Instantaneous
CSAC22.2No.236 / UL 1995
HeatingandCoolingEquipment
*Refertowaterheater rating plate under access panel on the opposite side of this cabinet.

OrificesnecessaryforLPconversion are provided.

Failuretousethecorrect gas can cause problems
whichcanresult in death, serious injury or property
damage

Lesinjecturesnecessairesala conversion au GPL sont
fournis.

Lefaitdenepas utiliser le bon gaz peut causer des
problemesquipeuventmenera la mort, causer des bessures
gravesouendommagerlapropriete
24*
24*
Waterheaterratingplate located under access panel on opposite side of cabinet.
20A
** The Water Heater rating plate is located on the
right side of the cabinet.
9
Clearances [Dégagements]
GF 200
COMBINATION GAS WATER HEATER / CENTRAL AIR HEATING
COMBINAISON CHAUFFEE-EAU INSTANTANE / GENERATEUR
D'AIR CHAUD
#####
Made in Canada
Fabriques au Canada
Serial Number: #####
##### ##### ##### #####
AIR FLOW
This appliance is approved for upflow installation.
Cette fournaise est approvée pour l'installation et circulation d'air ascendente.
Min. clearance to combustible construction: (in.) see diagram.
Dégagements minimum entre l'appareil et des constructions combustibles (PO.)
Vent clearance to combustible construction (in.): 0
Dégagement de vent constructions combustibles (PO.): 0
* Min service clearance
* Dégagement min. pour fins d'entretien pour les installations
C: COMBUSTIBLE FLOORS
*Refer to Installation Manual for service clearance details
0
0
0
0
24*
C
Electrical Rating / Caractéristique Électrique
VOLTS INDOOR BLOWER MOTOR
120 60 Hz 1 12 A 9.6 A 3/4
RATED AMPS HP
Certified by
Certifie par
NY Thermal Inc. 30 Stonegate Dr., Saint John, NB, E2H 0A4, Canada
Model
[Modèle]
Fuel
[Gaz]
Altitude, ft
[Altitude, pi]
Input, MBH
[Entrée, kW]
Min Max
Space Heating
Capacity, MBH
[Capacité de
Chauffage, kW]
Nat. 19.9 [5.83] 200 [58.6]
0 - 4500*
GF 200
LP
80 [23.5]
FACTORY SET FOR NATURAL GAS
Field converted to Propane Gas
CONFIGURÉE À L'USINE POUR GAZ NATUREL
Convertie au propane sur place
Date:________________________________ Date:________________________________
Gas Pressure [Pression du Gaz] Natural [Naturel] Propane
Maximum Inlet Gas Pressure [Pression maximale d'entrée du gaz]
Minimum Inlet Gas Pressure [Pression minimum d'entrée du gaz]
Manifold Pressure [Pression d'admission]
10.5" WC
3.5" WC
-0.58" WC
13" WC
8" WC
-0.02 / -0.78" WC
Important Information [Rensignesments Importants]
Use for Natural or LP Gas only.
Maximum Water Pressure = 150 psi
Maximum Static Pressure = 0.8 IN. W.C.
Maximum Inlet Water Temperature = 180°F
This appliance must be installed in accordance
with local codes, if any; if not, follow ANSI
Z223.1/NFPA 54 or CAN/CSA B149.1, Natural
Gas and Propane Installation Code, as
applicable.
Utilisez des gaz Naturel ou LP seulement.
Pression d'eau max. = 150 lb/po²
Pression statique max. = 0.8 PO. D'EAU
Temp. maximale d'eau d'entrée = 180°F
Cet appareil doit être installé conformément aux codes
locaux, le cas échéant ; sinon, suivez ANSI Z223.1 /
NFPA 54 ou CAN / CSA B149.1, gaz naturel et
propane Code d'installation, le cas échéant.
FOR YOUR SAFETY
Do not store or use gasoline or other
flammable vapors and liquids in the vicinity
of this or any other appliance.
POUR VOTRE SÉCURITÉ
Ne pas entreposer ou utiliser d'essence ou d'autres
vapeurs et liquides inflammables à proximité de cet
appareil ou de tout autre appareil.
Standard ANSI Z21.10.3 / CSA 4.3
Gas Water Heaters, Volume III Storage Water
Heaters, with Input Ratings Above 75,000 BTU
per Hour, Circulating and Instantaneous
CSA C22.2 No. 236 / UL 1995
Heating and Cooling Equipment
* Refer to water heater rating plate on the opposite side of this cabinet.
Orifices necessary for LP conversion are provided.
Failure to use the correct gas can cause problems
which can result in death, serious injury or property
damage.
Les injectures nécessaires à la conversion au GPL sont
fournis.
Le fait de ne pas utiliser le bon gaz peut causer des
problèmes qui peuvent mener à la mort, causer des blessures
graves ou endommager la propriété.
24*
24*
Water heater rating plate located on opposite side of cabinet.
20 A
FREQ. PHASE MCA MAX. CKT. BRK.RATED AMPS
15 A
Part # 85477

3. Installing the appliance
3.1 Choosing an installation location
This appliance must be installed indoors, in a dry
location free of dust and debris.
When choosing an installation location, you
must ensure that the location provides adequate
clearance for the appliance (inculding ductwork),
adequate venting and drainage options, and
sucient access to gas, water, and electrical
supplies. Carefully consider the following factors
when choosing an installation location:
Water quality
Proper maintenance of the appliance is required
to ensure that your water meets EPA quality
standards. The following table shows the maximum
contaminant levels allowed, based on the EPA
National Secondary Drinking Water Regulations
(40 CFR Part 143.3). If you suspect that your water
is contaminated in any way, discontinue use of the
water heater and contact an authorized technician
or licensed professional.
Contaminant Maximum Allowable Level
Total Hardness Up to 200 mg/l (12 grains/gallon)
Aluminum 0.05 to 0.2 mg/l
Chloride Up to 250 mg/l
Copper Up to 1.0 mg/l
Iron Up to 0.3 mg/l
Manganese Up to 0.05 mg/l
pH 6.5 to 8.5
Sulfate Up to 205 mg/l
Total Dissolved Solids (TDS) Up to 500 mg/l
Zinc Up to 5 mg/l
Chlorine Up to 4 mg/l
Access to utilities
●Water – the installation location should be near
where the domestic water supply enters the
building.
●Gas – the installation location should be near
where the gas supply enters the building.
●Electricity – the installation location should
be near where the electrical supply enters the
building.
Adequate drainage
This appliance produces a signicant amount of
condensate
●Maintain proper clearances from any openings in
the building.
●Install the appliance with a minimum clearance of
12 in
(300 mm) above an exterior grade, or as required
by local codes.
●Maintain a minimum clearance of 4 ft (1.2 m)
from heating and cooling vents.
●Do not enclose the vent termination.
●Install the exhaust vent in an area that is free from
obstructions and does not allow the exhaust to
accumulate.
●Do not install the appliance where moisture from
the exhaust may discolor or damage walls.
●Do not install the appliance in bathrooms,
bedrooms, or any other occupied rooms that are
normally kept closed or that are not adequately
ventilated.
10

Proximity to xtures and other appliances
Install the appliance near xtures that deliver or use
hot water, such as bathroom, kitchen, and laundry
room faucets. Select a location that minimizes the
water piping required between major xtures. If
the distances are long or the user requires “instant“
hot water, we recommend running a recirculation
line back to the appliance from the furthest xture.
Insulate as much of the hot water supply and
recirculation lines as possible. For more information
about the water supply, refer to “3.4 Connecting
the Water Supply.“
Additionally, take care to locate the appliance
such that the supply and return ductwork can
be installed eciently, to limit noise and power
consumption.
Clean, debris and chemical-free combustion air
●Do not install the appliance in areas where dust
and debris may accumulate or where hair sprays,
spray detergents, chlorine, or similar chemicals
are used.
●Do not install the appliance in areas where
gasoline or other ammables are used or stored.
●Ensure that combustible materials are stored
away from the appliance and that hanging
laundry or similar items do not obstruct access to
the appliance or its venting.
●In commercial locations, do not install the
appliance in areas with greasy fumes or heavy
amounts of steam or take measures to prevent
fumes and steam from entering the appliance.
3.2 Installation clearances
Install the appliance in an area that allows for service
and maintenance access to utility connections,
piping, lters, and traps. Based on the installation
location, ensure the following clearances are
maintained:
Clearance from: Minimum clearance
Top 9 in
Back Nil (if not return)
Front 4 in*
Side (No connections) 3 in
Fan access side 24 in (457 mm)
Side (Connections) 12 in
Bottom Nil
* 4 inch clearance to front of unit if obstruction is removable
(such as a door). 12 inch clearance if obstruction is permanent.
When locating the appliance prior to completing
the ductwork, it is essential that sucient space be
allotted for ductwork installation and maintenance
(such as replacement or cleaning of the air lter), as
well as fan access.
Return ducting
Return air may be ducted into the appliance via:
1. side access door opening
2. rear panel (cut out guide holes provided)
3. oor panel (leave minimum 1" along sides, rear,
and spine, taking care not to excise formed feet
at the rear corners).
REFER TO DUCTING SECTION FOR DETAILED
INSTRUCTIONS
11

3.3 Connecting the Gas Supply
WARNING
●Before connecting the gas supply, determine
the gas type and pressure for the appliance
by referring to the rating plate. Use only
the same gas type indicated on the rating
plate. Using a dierent gas type will result in
abnormal combustion and malfunction of the
appliance. Gas supplies should be connected
by a licensed professional only.
●The appliance and its gas connection must be
leak tested before placing it in operation.
●This appliance cannot be converted from
natural gas to propane or vice versa without
a gas conversion kit. Do not attempt a
eld conversion of this appliance without
a gas conversion kit. Doing so will result in
dangerous operating conditions and will void
the warranty.
●For gas conversion instructions, refer
to relevant sections of the water heater
installation manual (supplied).
It is recommended that this appliance be
connected as the rst one downstream of the gas
meter, to ensure a sucient gas supply.
It is recommended that
this appliance be the rst
connected to the gas supply
line.
Gas Supply Line
Gas meter’s capacity ≥ Total gas
capacity of connected appliances
*Gas connection can be made on the left or right side of the cabinet.
To connect the gas supply:
1. Determine the gas type and pressure for the
appliance by referring to the rating plate.
2. Perform a pressure test on the main gas supply
line.
3. Purge the gas line of any debris.
4. Determine the proper size and type for the gas
line. Refer to the tables that follow.
5. Install full port valves on the gas supply line and
appliance.
6. Connect the gas supply line.
7. Test the supply line, all connection points, and
the appliance for gas leaks.
Union
Gas Shuto Valve
Gas Supply
Gas Inlet Adapter
Pipe size : 1/2in to 3/4in
(inner diameter)
12

Note
●Tighten the appliance connection
valves with care to avoid damage.
●Refer to the sizing tables on the
following pages for limitations.
●It is recommended that a union be
installed on the gas supply line close to
the appliance, to facilitate any future
maintenance or service.
Single Regulator System
Gas Regulator
Gas
Full size
Gas Pipe
Full size
Gas Pipe
Pipe
13
Gas Regulators
(2 Stage)
Full size
Gas Pipe
Gas High Pressure
Regulator
Low Pressure
Regulator
Typical LP Gas piping examples:
2 Stage System with Multiple Regulators (Recommended)

3.3.1 Gas Pipe Sizing Tables (Referenced from 2012 National Fuel Gas Code)
These tables are for reference only. Please consult the gas pipe manufacturer for actual pipe capacities.
Maximum Natural Gas Delivery Capacity
in Cubic Feet (ft3) per Hour (0.60 Specic Gravity; 0.5 in WC Pressure Drop). Contact your gas supplier for BTU/
ft3 ratings. Use 1,000 BTU/ft3 for simplied calculations. This table is recommended for supply pressures less
than 6 in WC.
Pipe
Size
Length (including ttings)
10 ft
(3 m)
20 ft
(6 m)
30 ft
(9 m)
40 ft
(12 m)
50 ft
(15 m)
60 ft
(18 m)
70 ft
(21 m)
80 ft
(24 m)
90 ft
(27 m)
100 ft
(30 m)
125 ft
(38 m)
3/4in 360 247 199 170 151 137 126 117 110 104 92
1 in 678 466 374 320 284 257 237 220 207 195 173
1 1/4in 1,390 957 768 657 583 528 486 452 424 400 355
1 1/2in 2,090 1,430 1,150 985 873 791 728 677 635 600 532
2 in 4,020 2,760 2,220 1,900 1,680 1,520 1,400 1,300 1,220 1,160 1,020
2 1/2in 6,400 4,400 3,530 3,020 2,680 2,430 2,230 2,080 1,950 1,840 1,630
3 in 11,300 7,780 6,250 5,350 4,740 4,290 3,950 3,670 3,450 3,260 2,890
4 in 23,100 15,900 12,700 10,900 9,660 8,760 8,050 7,490 7,030 6,640 5,890
in Cubic Feet (ft3) per Hour (0.60 Specic Gravity; 3.0 in WC Pressure Drop). Contact your gas supplier for BTU/
ft3 ratings. Use 1,000 BTU/ft3 for simplied calculations. This table is recommended for supply pressures of 6
in WC or greater.
Pipe
Size
Length (including ttings)
10 ft
(3 m)
20 ft
(6 m)
30 ft
(9 m)
40 ft
(12 m)
50 ft
(15 m)
60 ft
(18 m)
70 ft
(21 m)
80 ft
(24 m)
90 ft
(27 m)
100 ft
(30 m)
125 ft
(38 m)
1/2in 454 312 250 214 190 172 158 147 138 131 116
3/4in 949 652 524 448 397 360 331 308 289 273 242
1 in 1,787 1,228 986 844 748 678 624 580 544 514 456
1 1/4in 3,669 2,522 2,025 1,733 1,536 1,392 1,280 1,191 1,118 1,056 936
1 1/2in 5,497 3,778 3,034 2,597 2,302 2,085 1,919 1,785 1,675 1,582 1,402
2 in 10,588 7,277 5,844 5,001 4,433 4,016 3,695 3,437 3,225 3,046 2,700
2 1/2in 16,875 11,598 9,314 7,971 7,065 6,401 5,889 5,479 5,140 4,856 4,303
3 in 29,832 20,503 16,465 14,092 12,489 11,316 10,411 9,685 9,087 8,584 7,608
4 in 43,678 30,020 24,107 20,632 18,286 16,569 15,243 14,181 13,305 12,568 11,139
14

Maximum Liqueed Propane Delivery Capacity
in Thousands of BTU/H (0.5 in WC Pressure Drop)
Pipe
Size
Length (including ttings)
10 ft
(3 m)
20 ft
(6 m)
30 ft
(9 m)
40 ft
(12 m)
50 ft
(15 m)
60 ft
(18 m)
80 ft
(24 m)
100 ft
(30 m)
125 ft
(38 m)
150 ft
(45 m)
175 ft
(53 m)
200 ft
(60 m)
250 ft
(76 m)
1/2in 291 200 160 137 122 110 101 94 89 84 74 67 62
3/4in 608 418 336 287 255 231 212 197 185 175 155 140 129
1 in 1,150 787 632 541 480 434 400 372 349 330 292 265 243
1 1/4in 2,350 1,620 1,300 1,110 985 892 821 763 716 677 600 543 500
1 1/2in 3,520 2,420 1,940 1,660 1,480 1,340 1,230 1,140 1,070 1,010 899 814 749
2 in 6,790 4,660 3,750 3,210 2,840 2,570 2,370 2,200 2,070 1,950 1,730 1,570 1,440
3.3.2 Measuring the Inlet Gas Pressure
For detailed instrustions to measure the inlet gas pressure, see relevant section in the water heater
installation manual (supplied).
15

3.4 Connecting the Water Supply
When connecting the water supply, follow these
guidelines:
●Use only pipes, ttings, valves, and other
components, such as solder, that are approved for
use in potable water systems.
●Tighten the appliance connection valves and/or
ttings with care to avoid damage.
●We recommend using unions and manual shut-
o valves on the cold water inlet and DHW outlet.
●Strive to make the hot water piping system as
short as possible, to deliver hot water to the
xtures more quickly.
●To conserve water and energy, insulate all water
piping. Never cover the drain or pressure relief
valve. If the appliance is installed in a closed water
supply system, such as one having a backow
preventer in the cold water supply line, means
shall be provided to control thermal expansion.
Contact the water supplier or local plumbing
inspector for information about how to control
this situation.
●After installing the appliance, clean the inlet
water lter that is located inside the cold water
inlet, and then test the appliance for proper
ow and inspect for leaks. Instruct the appliance
owner that the lter must be cleaned periodically
to maintain proper water ow.
16
3.4.1 Installing the plumbing connections
1. A kit box containing the necessary plumbing
connections is shipped inside the cabinet. Remove
the kit box before installation.
Kit box includes:
Item Part Number Quantity
Open Brass Connection Adapter 85372 2
Plug Brass Connection Adapter 85523 2
Pipe Clips 85371 4
Flow Switch 85582 1
Vinyl Tubing (10.5") 83044 1
O-Rings 85369 6
Screws 82998 14
2" Vent Termination Caps 85590 2
2" Wall Flanges 85591 4
2. This appliance is shipped with cardboard inserts
on the inside to support the plumbing during
shipping. Remove cardboard prior to installation.
KIT BOX
REMOVE CARDBOARD

3. Determine which side of the appliance the inlet
and outlet water connections will be made on.
A) Left side connections
B) Right side connections
C) Both - One on each side
NOTE: Typically both water connections are
installed on the opposite side of the return air duct
to allow for air lter & maintenence clearances.
4. Install the plug adapters opposite the inlet and
outlet connections.
Slide each plug through the hole in the cabinet and
into the corresponding pipe; secure with (3) screws
(PN: 82998) and (1) pipe clip (PN: 85371).
MUST ATTACH O-RING BEFORE SECURING.
ATTACH O-RING
PN: 85369
ATTACH PIPE CLIPS
PN: 85371
COLD
SUPPLY
HOT
SUPPLY
UNION
FLOW SWITCH
TEMPERING VALVE
SHUT OFF
VALVES DRAINS
The following is a typical near-appliance plumbing
layout for connections on the same side.
NOTE: Do not block service door
5. Solder pipe and pipe ttings onto the open
brass connection adapter (PN: 85372) prior to
securing to the cabinet and internal plumbing.
IMPORTANT: Do not solder to brass adapter with
O-ring installed.
6. Install the ow switch on the inlet piping up-
stream of the tempering valve as shown above.
Connect the ow switch cable to terminals 1 and 2
“FLOW SWITCH” on the eld wiring barrier strip.
7. A tempering valve must be installed on the
hot water outlet to prevent scalding. See drawing
above.
SERVICE DOOR
PRESSURE
RELIEF VALVE
EXPANSION TANK
17

RECIRCULATION MODE
This appliance comes factory set for pre-heat
recirculation.
1. The Front Panel DIP switches (set of ten) are
factory set to: 1—OFF; 2—ON.
1 2 3 4 5 6 7 8 9 10
ON ON
2. To disable pre-heat recirculation, set DIP switch
#2 to the o (down) position.
The following diagram shows the recirculation ow
for pre-heating:
Primary Heat Exchanger
Secondary Heat Exchanger
Flow
Sensor
Domestic
Water
Supply
Bypass
Pump Check
Valve
Water
Adjustment
Valve
Buer
Tank
Hot
Supply
Space Heating Loop
18
3.4.2 Connecting a Pressure Relief Valve
WARNING
Improper installation of the pressure relief valve
may result in property damage, personal injury,
or death. Follow all instructions and guidelines
when installing the pressure relief valve. The
valve should be installed only by a licensed
professional.
To complete the installation of the appliance, you
must install an approved 3/4in, maximum 150
PSI pressure relief valve on the hot water outlet.
The appliance's water heater has a built-in high
temperature shut o switch, so install a “pressure
only“ relief valve. This valve is not supplied, but is
required. The following examples are approved for
use with the appliance:
●Wilkins P-1000A (Zurn Industries)
●Conbraco 17-402-04
●Watts Industries 3L(M7)
●Cash Acme FWL-2, 3/4in
The pressure relief valve should be placed as close
to the hot water outlet as possible. No other valve
should be placed between the pressure relief valve
and the appliance.
Pressure
Relief Valve

When installing the valve, follow these guidelines:
●Ensure that the discharge capacity of the pressure
relief valve is equal to or greater than the
maximum pressure rating of the appliance.
●Ensure that the maximum BTU/H rating on the
pressure relief valve is equal to or greater than the
maximum input BTU/H rating of the appliance's
water heater.
●Direct the discharge piping of the pressure relief
valve so that hot water will not splash on anyone
or any nearby equipment.
●Attach the discharge line to the pressure relief
valve and run the end of the line to within 6-12 in
(150-300 mm) of the oor.
●Ensure that the discharge line will allow free and
complete drainage without restriction. Do not
install a reducing coupling or other restriction on
the discharge line.
●If the relief valve discharges periodically, this may
be due to thermal expansion in a closed water
supply system. Contact the water supplier or
local plumbing inspector on how to correct this
situation. Do not plug the relief valve.
3.5 Connecting the Condensate Drain
This appliance creates condensation when it
operates. This condensate has an acidic pH of
3-5. Follow all local codes and regulations when
disposing of condensate from the appliance. We
recommend draining the condensate into a laundry
tub, as the alkali in laundry detergent will neutralize
the acid in the condensate. However, other suitable
waste drain locations may be used according to
local codes.
CAUTION
●Do not cap or plug the integrated condensate
line. If prevented from draining, condensate
can damage the appliance.
●The condensate line must have a negative
slope to drain properly.
Before connecting the condensate drain, choose
one of the following disposal options:
a. From the appliance directly into an external
drain.
b. From the appliance, through a neutralizing
agent, and then into an external drain.
Note If you choose this option, the
neutralizing agent must be replaced
periodically. Depletion of the
neutralizing agent will vary, based
on the usage rate of the appliance.
During the rst year of operation, the
neutralizer should be checked every
few months for depletion and replaced
as needed.
c. From the appliance into a laundry tub.
Note The condensate outlet must be higher
than the top of the laundry tub to use
this option. The condensate line must
have a negative slope to drain properly.
d. From the appliance into a condensate pump, and
then into a laundry tub.
Note A pump can be used when there is a
long distance between the appliance
and the laundry tub or when the
condensate outlet is lower than the top
of the laundry tub.
Direct to
drain
Drain via
Neutralizer Laundry tub via
condensate pump
Direct to
laundry tub
Choose
Connection Side
19