Installation
IndoorDirectVentTanklessWater Heater
Instructions
I [] Questions? Call 888.HOTWTER (888.468.9837) or Visit our website at ge.com I
Models GN75DNSRSA, GN94DNSRSA, GP94DNSRSA
FOR INDOOR APPLICATIONS ONLY
WARNING: Read entire manual. Failure to follow oil guides and rules could cause personal
injury or property damage.
• Check with your state and/or local public works department for plumbing codes. You must follow their
guides as gou install the Water Heater.
NOTE: Failure to comply with these installation instructions will void the product warranty, and the
installer will be responsible for ang service, repair or damages caused therebg.
BEFORE BEGINNING INSTALLATION
Read these instructions completely and carefully.
• INPORTANT - Savetheseinstructions
forlocalinspector'suse
•IM PO RTANT -Observeoligoverning
codes and ordinances
• Note to Installer- Be sure to leave these
instructions with the Consumen
• Note to Consumer - Keep these instructions
for future reference.
• Proper installation is the responsibilitg of the
instollen
• Product failure due to improper installation
is not covered under the Worrontg.
_IL Recognize this symbol as on indication
of Important Safety Information!
49-50229-1 03-08 JR
SAFETY PRECAUTIONS
WARNING:,ftheinformationinthese
instructions is not followed exactlg, a fire or explosion
may result, causing property damage, personal injury
or death.
A FOR YOUR SAFETY!
- Do not store or use gasoline or other
flammable vapors or liquids ar other
combustible materials in the vicinity of this
or any other appliance. To do so meg result
in an explosion or fire.
- WHAT TO DO IFYOUSMELLGAS
• Do not try to light ang appliance.
• Do not touch any electrical switch;
do not use any phone in your building.
• Immedietelg 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.
• Do not return to your home until authorized
by the gas supplier or fire department.
- Improper installation, adjustment, alteration,
service or maintenance can cause propertg
damage, personal injury or death. Refer to
this manual. Installation and service must
be performed by a qualified installer, service
agency or the gas supplier.
• This water heater must be vented outdoors
using approved ducting materials.
• Service information and wiring diagram are
located behind front panel.
• Service must be performed by a qualified
service agencg.
• This appliance must be properly grounded and
installed as described in these instructions.
1
Installation Instructions
SAFETY PRECAUTIONS (cont.)
WARNING: Donotusesubstitute
materiels. Use onlg ports certified with the
appliance.
• This appliance must be installed, inspected and
leak tested by a state- or city-qualified licensed
contracton It is the responsibility of the person
having the water heater installed to ensure the
installing contractor has proper licenses and
permits for installing water heaters in your
location. GEhighly recommends that installers
attend a product knowledge class to ensure
customer satisfaction and warranty coverage.
Failure to comply with state and local codes
pertaining to water heater installations may
void the warranty.
• This appliance is not to be installed outdoors.
• The installation must conform with local codes or,
in the absence of local codes, with the Notional
Fuel Gas Code, ANSI Z223.1/NFPA 54, or the
Natural Gas and Propane Installation Code,
CSA B149.1.
• Theappliance and its appliance main gas valve
must be disconnected from the gas supply piping
system during any pressure testing of that
system at test pressures in excess of 1/2 psi
(3.5kPa)(13.84 inW.C.).
• Theappliance must be isolated from the gas
supply piping system by closing its individual
manual shut-off valve during any pressure
testing of the gas supply piping system at test
pressures equal to or less than 1/2 psi (B.5kPa)
(13.84 inW.C.).
SAFETY PRECAUTIONS (cont.)
• The flow of combustion and ventilation air shall
not be obstructed.
• This appliance is not suitable for use in an
application such as a pool or spa heater that
uses chemically treated waten (This appliance
is suitable for filling large or whirlpool bath tubs
with potable water.)
• If a water heater is installed in a closed-water
supply system, such as one having a backflow
preventer in the cold water supply line, means
shall be provided to control thermal expansion.
Contact the water supplier or local plumbing
inspector on how to control this situation.
• Should overheating occur or the gas supply fail
to shut off, turn off the manual gas control valve
to the appliance.
• Keep the air intake (at the flue terminal external
to the home) location free of chemicals, such as
chlorine or bleach, that produce fumes. These
fumes can damage components and reduce
the life of your appliance.
CAUTION:doNOToperate thewater
heater if any part of the appliance has been under
waten
CAUTION: BURN HAZARD. Hot exhaust
and vent may cause serious burns. Keep back from
water heater unit. Keep small children and animals
away from unit.
CAUTION:Hot Water outlet pipes leaving
unit can be hot to touch. Insulation must be used
for hot water pipes below 36" due to burn risk to
children.
WARNING: This unit is not intended
or qualified for use in manufactured homes, mobile
homes or recreational vehicles.
• Carefully follow the venting instructions
beginning on page 19 and in the Maintenance
section in the Owner's Manual for adequate
combustion and ventilation air.
• The appliance should be located in an area
where water leakage of the unit or connections
will not result in damage to the area adjacent to
the appliance or to lower floors of the structure.
When such locations cannot be avoided, it
is recommended that a suitable drain pan,
adequately drained, be installed under the
appliance. The pan must not restrict combustion
airflow.
2
Installation Instructions
PARTS PROVIDED
Locate the parts packed with the Water Heater.
GasValve3/4" FNPTBallValve
WoodScrews
TOOLS YOU WILL NEED
• Pipe Wrenches (2)
• Adjustable Pliers
• Screwdrivers (2)
• Wire Cutters
• Gloves
• Safetg Glasses
MATERIALS YOU WILL NEED TO SUPPLY
• Soap Solution
• Pipe Compound
• Approved Venting
• 5/8" ID PVC Flexible
Tubing
• 2 Conductor 22 AWG Wire for Remote Control
• Single Gang Electrical Box
• Wire Nuts
• Concrete Wall Anchors (Optional)
Your instelletion components mog vorg.
• Pipe Fittings Required:
- Unions
- Ball Valves
- Drain Valves
- Pressure Relief Valve
OTHER TOOLS THAT HIGHT BE REQUIRED
• Hammer Drill with Concrete Bits
• Saw
• Threading Hachine with Heads and Oiler
• Core Drill with Diamond Head
• Torch Set
• Copper Tubing Cutter
• Steel Pipe Cutter
OTHERMATERIALSTHAT MIGHT BENEEDED
• Heat Tape
• Pipe Insulation
• Electrical Wire and Conduit per Local Code
• Air Inlet Screen
• Optional Pipe Cover AGTPCI
• Optional Remote Controller AGTRC1
3
DIMENSIONS
Installation Instructions
GN751GN94/GP94DNSRSA
DIM. DESCRIPTION IN. (MM)
A Width 14 (355.6)
B Depth 95/s (244.5)*
C Height - Unit 22;/s (582)
D Height - with brackets 25_/2(647.7)
E Hot Water Outlet - from wall 3% (91)*
F Hot Water Outlet - from center 4%6 (110)
G Cold Water Inlet - from wall 21Y16(70)*
H Cold Water Inlet - from center l_/s (27)
I Gas Connection - from wall 5Ys (99)*
J Gas Connection - from center 5_/2(89)
From base to gas connection 1% (40)
K From base to cold connection 2 (50)
From base to hot connection 1% (41)
*This is the minimum dimension from the wall The wa]l bracket is adjustable to a]low on oddifiona1157 inches (40 mm)
4
PLANNING FOR VENTING
INTAKE/EXHAUST GUIDELINES
Installation Instructions
Refer to the specific instructions on gour vent
product for odditionol installation requirements.
• This water heater is a direct vent water heater and
therefore is certified and listed with the vent sgstem.
You must use vent components that are certified
and listed with the water heater model. See
approved venting list on page 20.
• Do not combine vent components from different
manufacturers.
• The vent sgstem must vent directlg to
the outside of the building and use outside
air for combustion.
• Everg vent connection must be accessible for
inspection, cleaning and replacement.
• Avoid dips or sags in horizontal vent runs bg
installing supports per the vent manufacturer's
instructions.
• Support horizontal vent runs everg four feet
and all vertical vent runs everg six feet or in
accordance with local codes.
Venting should be as direct as possible with
a minimum number of pipe fittings.
Vent diameter must not be reduced.
Do not connect the venting sgstem with
an existing vent or chimneg.
Do not connect vent with the vent pipe of ang other
water heater or appliance.
Vent connections must be firmlg pressed together
so that the gaskets form an air-tight seal.
The vent piece connected to the water heater must
be secured with one self-tapping screw.
Refer to the vent pipe manufacturer's instructions
for component assemblg instructions.
It is recommended to install an optional inlet screen
to minimize blockage and maintenance from debris.
See page 20.
S
Installation Instructions
FLUE TERMINAL CLEARANCES
U.S.INSTALLATIONS
CLEARANCESPER
REF
A
B
C
D
Clearance above grade, veranda, porch, deck or snowline
Clearance to window or door that mag be opened
Clearance to permanentlg closed window
Vertical clearance to ventilated soffit, located above the terminal within
a horizontal distance of 2 feet (61 cm) from the center line of the terminal
E
F
G
H
Clearance to unventilated soffit
Clearance to outside corner
Clearance to inside corner
Clearance to each side of center line extended above meter/regulator
assemblg
Clearance to service regulator vent outlet
Clearance to nonmechanical air supplg inlet to building or
the combustion air inlet to ang other appliance
Clearance to a mechanical air supplg inlet
L Clearance above paved sidewalk or paved drivewag located on public propertg 1
M Clearance under veranda, porch, deck or balcong z *
•For clearances not specified inANSIZ223 1/NFPA54,clearances are in accordance with local installation codes and the _ea
Clearance to opposite wall is24 inches (60 cm}
1Avent shall not terminate direcUgabove a sidewalk or paved driveway that is located between two single familg dwellings and serves both dwellings
2 Permitted onlg if veranda, porch, deck or baicong isfuilg open on a minimum of two sides beneath the floor
DESCRIPTION
ANSI Z21.10.3
36 inches (91 crn)
12 inches (30 cm)
12 inches (30 cm)
3 feet (91 cm} above
if within 10 feet
(3 m} horizontallg
_irernentsof the gas supplier
FLUE TERMINAL CLEARANCES (ANSI Z21.10.3 • CSA 4.3)
A
6
Installation Instructions
ADDITIONAL CLEARANCES - VENT TERMINAL
These clearances are applicable to both concentric terminations and nonconcentric vent exhaust terminations.
Localcodes supersede these clearances.
• Avoid termination locations near a druer vent.
• Avoid termination locations near commercial cooking exhaust.
60" (1.52 m) vertically
between terminals
(0.91 m) to ventilated
or unventilated soffit
or eave vent; or to a
deck or porch
(1.52 m) between
terminals at
different levels
(0.30 m) between
terminals at
same level
.-3
,.j
",.I (0.61 m) to wall or parapet
. I
(0.30 m) between
terminals at same level
7
Installation Instructions
FLUE INSTALLATION - CONDENSATE DRAIN
HORIZONTAL TERMINATION WITH VERTICAL TERMINATION (condensate collector
A CONDENSATE DRAIN required in all installations)
Condensate
Trap
3 in (75 ram)
minimum
(75 mm)
minimum
3 in (75 mm)
_ minimum
8
PLANNING FOR PLUMBING
(shown with optional pipe cover)
Installation Instructions
OptionalPipeCover
(AGTPCM)shownshaded.
Pipecovernotrequired,
Howeve[,consideration
shouldbe takenin
thedesignof the rough
plumbingto allow
installation of unit
andpipecover.
6½
18" rain.
Floor
The center of the pipes can be placed anywhere
within the shaded area. The center of the pipes
is recommended to be protruding only within 6"
of the mounting wall. Other specific installations
man be different.
Be sure that the minimum elevation of the bottom
of the unit is 16" to meet the 36" recommended
clearance for the exhaust.
CAUTION: BURN HAZARD. Hot exhaust and
vent mag cause serious burns. Keep back from water
heater unit. Keep small children and animals away
from unit.
Suggestedareafor
Waterand Gaslinesto
comethroughthewall
so the optionalpipe
covercanbe installed,
if desired
NaterandGas
frombebw
CAUTION:Hot Water outlet pipes leaving unit
can be hot to touch. Insulation must be used for hot
water pipes below 36" due to burn risk to children.
NOTE: It is recommended to install the bottom
of the unit at least 18" off the ground to minimize
blockage and maintenance from debris and provide
room for the optional Pipe Cover Accessory Hodel
Number AGTPCH.
NOTE: Do not install electrical outlet directly
below unit. Electrical outlet must be installed
less than 6 feet from unit.
9