Westinghouse HT351G12 User manual

GAS WATER HEATER
HT351G12
Note: Before operating or installing this gas water heater read
this manual and follow all safety rules and operating instructions.
12 L 2xAA
BATTERIES
GAS PRESSURE
2,800
Pa 1/2"- 1/2"
NPT
CONNECTIONS

Thank you for purchasing our large capacity automatic gas water heater.
Read this Manual before installing and operating and keep for future reference.
CONTENTS
• Special Advice --------------------------------------------------------------------------------------------- 3
• Factures & Benefits --------------------------------------------------------------------------------------- 3
• Parts Name ------------------------------------------------------------------------------------------------ 4
• Installation ------------------------------------------------------------------------------------------------- 5
• Operation Method ---------------------------------------------------------------------------------------- 8
• Cautions For Safety -------------------------------------------------------------------------------------- 9
• Maintenance ---------------------------------------------------------------------------------------------- 12
• Accessories Table ---------------------------------------------------------------------------------------- 12
• Trouble Shooting ----------------------------------------------------------------------------------------- 13

SPECIAL ADVICE
FEATURES & BENEFITS
Since the combustion of the gas will consume a large amount of air and produce Carbon
Monoxide while the heater is working. However, if human inbreathe too much Carbon Monoxide,
it will cause danger or even death. Therefore, the users are requested to install and use this
heather strictly according to this manual to avoid Carbon Monoxide toxicosis. The manufacturer
or its authorized distributors will not bear responsibility for any danger resulted from
installation and operations not in accordance to this manual.
1. Automatic operation
• Just turn on the hot water tap or shower, hot water will issuc. When the tap is turned off,
the flame will automatically go out.
• Independent control of water flow and gas flow makes it easy to adjust the water
temperature.
2. Innovative design
• Sleek shape and convenient to install.
• Advanced energy-saving combustion technology greatly promotes burning efficiency.
• Ignite at low water pressure (0.03MPa); fulfill the needs of users living in high buildings.
3. Complete safety functions
Sensitive IC flame sensor will cut off the gas supply if flame goes out unexpeectedly.
• Insufficient water flow pressure protection.
• Anti-frost function.
• In case of no-water burning, the gas valve will automatically turn off.

PARTS NAME
Flue duct
Front cover
Flame check window
Display
Flame regulator
Hot water outlet
Gas inlet
Water flow control
Cold water inlet
Battery box
Fig. 1
A
B
C
JSD20-10M
350
636
110
JSD24-12M
350
636
127
Fig. 2
(Unit:mm)
All pictures are just for reference, please see the product for the exact appearance.

INSTALLATION
• Before installation, contact the qualified
technicians in local gas dealer or gas
manegement department to do the
installation. Any random or improper
installation will affect the safety use of
the machine or even damage users life.
• If the flue type gas water heather installs
a flue, it is strictly prohibited to open
the mechanical ventilation equipment like
the cooker hood and ventilation fan in
rooms that are installed or connected
through when it is in operation.
Installation requirements
• Do not install the water heater in bedroom,
basement, bathroom, or rooms under bad
ventilation condition. The room for
installation shall be well ventilated and
above 6m2 in area. A ventilation hole
as well as an exhaust hole must be drilled
in the wall, for venting purpose. The
ventilation fan shall be installed on top
of the water heater, and the venting hole
shall be at the level lower than the water
heater. (Fig.3)
• The flame-check window of the water
heater shall be at the level of eyes (about
1.55m-1.65m above the floor. Fig.4), kept
away from the inflammables (Fig. 5).
Nothing could be installed or put within
500mm under the gas water heater at
vertical level. No line, electric equipment
shall be put overhead of the water heater.
The heater shall be kept at least 400mm
far from electronics at horizontal level.
• Do not install the water heater where
strong wind blows, or it can cause
flameout or incomplete combustion.
Exhaust exit
Flue
Air inlet
Fig.3
Fig. 4
Fig. 5
(Unit:mm)
(The flame proof should be 100mm larger than the heather cover)
Fig. 6
(Unit:mm)
A
B
JSD20-10M1
JSD24-12M1
MODEL
530.5
283.5
16-20
20-26
26-32
32-40
200
250
320
Fom 1
160
Nonflammable material
Flammable wall
Flame proof board

INSTALLATION METHOD
1. Installation
Drill holes in the wall according to Fig.6, put an expansion bolt into the upper
hole and plastic gasket into the lower hole, mount the water heater vertically
on the upper bolt without
inclination and tighten the
lower holes with expansion
bolts.
2. Piping
• L.P.G users are recommended
to use 2m3/h pressure- reducer.
• Gas Inlet Faucets
(1) For L.P.G users, connect the
gas inlet faucet and the gas
pressure-reducer of the gas
cylinder with special 9.5mm
rubber tube, fasten the joints
with clips.
(2) For Town Gas users, contact
the gas dealer to connect with
15mm pipe.
(3) After connecting the pipes,
cheek the connections with
soapsuds for gas leak.
• Water Inlet Faucct
Remove the drain valve firstly
to avoid breaking the anti-frost pipe. It’s better to use the tube provided by
the manufacture, or you may use rigid pipe as cold-water connection. A water
controller shall be installed before the water inlet faucet (Fig.7). (Note: There
is a filter inside the water inlet faucet, do not remove it while installing).
Gas valve
Gas inlet
Gas valve
Gas inlet
Rubber gasket
Rigid pipe
I lot water outlet
Rubber gasket Soft copper pipe
Rubber gasket
Cold water inlet
Water inlet valve
Soft tube
Rubber gasket
Fig. 7
Fig. 8
Gas valve
Gas inlet

• Hot Water Outlet
If connect the hot water outlet
directly to the shower, you can use
tube or rigid pipe. When install
control valve or tap to the hot water
outlet, or install the shower with
control tap, do not use pipes made
of materials pressure-unendurable
or temperature-unendurable, such
as plastic pipes, aluminum pipes.
3. Battery Installation
Do not confuse the positive and
negative ends of the batteries (See
Fig. 8).
4. Fluc Duct Installation
As this water heater is flue duct type,
the waste air exhaust pipe must be
installed.
• The main body of the flue duct shall be made of rustproof material.
• The horizontal part of the flue duct shall has an 1:100 down inclination, and
there shall be a 10mm hole at the bottom of the vertical part of the duct
outside the room, for the purpose of draining water drops.
• The outlet of the flue duct shall have a windproof cap, which should not be
clogged.
Installation method:
• Drill proper holes on the wall according to the right dimensions of the heater
(See Fig. 9).
• Stuff the holes with non-flammables.
• For duct block function, it is required to install the exhaust duct according to
Fig9. strictly. It’s very import for dimension 1800mm ≤a+b≤2200mm.
The tightness between the exhaust duct and the duct holder must be all right.
After installation of duct, to ensure the water hater can operate normally. (For
model with flue blockage protection.)
holder stand
roof
duct holder
duct cap
duct holder
Height of flame
check window
water heater
flue duct
exhaust fan
10mm drain hole
air inhale > 0.06m2
Fig. 9
INSTALLATION METHOD

OPERATION METHOD
1. Preparation Before Ignition
• Make sure the type of gas used complies with that stipulated in the label.
• Open the ventilation holes.
• Turn on the gas inlet valve.
2. How to ignite
• Turn on the water valve (make sure
there is water flowing out of the
shower), the green indicating light
will turn on with “clicking” ignition
sound. The burner is ignited and hot
water flows out instantly. If the water
pressure is low, or the power is not
connect, the water heater will not
aperate normally.
• After initial installation or a change
of gas cylinder air may remain in the
gas pipe and it requires several ignition
attempts to push the air out of the pipe
before the gas can be ignited. If a
problem comes up after normal
operation, turn off the water
immediately. Try to re-ignite 10-20
seconds later to avoid “pop” burning.
• Water Temperature Control
(1) Turn the water flow control knob (rob)
on the cover of (under) the machine
to control the water flow and its
temperature. Turn the gas regulator
knob (rod) on the cover (bottom) to
control the flame of the burner thus
controlling the hot water temperature.
Fig. 10
Fig. 11
Fig. 12
Test temperature before using.
Turn off the gas valve after using.
Open the window when smell gas.
Power switch
Don’t touch

OPERATION METHOD
CAUTIONS FOR SAFETY
(2) Turn the water inlet tap to control water temperature: deercasing the water
flow to make the water temperature high (do it slowly, if the flame extinguishes
then re-ignitc by inercasing the water flow), and inercasing the water flow to
make the water temperature low.
• Test water temperature with your hand before using to avoid scalding. (Fig.10)
• Turn off the gas valve after each shower. (Fig.11)
• When the outdoor temperature is below 0ºC, the water heater must be drained
after each shower as follows:
1) Turn off the water control valve.
2) Turn the water flow control knob to “low” position.
3) Remove the drain cock. (The drain cock is a bolt connected to the valve. Take
it off by counter-clockwise to drain the water out completely). Fix the drain
cock back into the original place for another shower.
Gas Leakage Prevention
• It’s better to install a gas leakage-warning device.
• Check whether the flame is extinguished after each shower and do not forget
to turn off the gas valve (Fig.11)
• Always check all the gas pipe connectiond with soapsuds to see whether it
has gas leakage. In case of gas leakage, shut off the gas supply and open the
windows immediately. Under such condition, ignnition, switching on/off the
electric power supply are strictly prohibited to avoid explosion and firing.
(Fig.12)
• Keep on using one type of gas (L.P.G or NG), never mixing using them.
• Check the gas tube regularly as it may age and crack after long period of usage.
Replace it if cracked tubes are found. Under normal operation, the gas tube
should be replaced yearly.
• For L.P.G user, if the flame of the heater is not stable, it may be caused by
the breakdown of the pressure reduction valve connected to the outlet of the
gas tank. In that case, stop using the heater immediately and contact a service
technician.
• For TG or NG users, if the flame of the heater is not stable, it may be caused
by the instability of the gas pressure. In thet case, stop using the heater;
otherwise it may be damaged or even cause accident.
Fire Accident Prevention
• Make sure that the flame of the heater has extinguished before leaving the
room or go to sleep.

CAUTIONS FOR SAFETY
• Turn off the main gas valve and the water inlet valve in case of watershortage.
• Do not place inflammables like towel or cloth onto the waster air drain outlet
or the air inlet. (Fig.13)
• Do not pile inflammables,
explosives or volatile materials
near the heater. (Fig.14)
• For L.P.G users, do not place
the tank tilted or inverted,
otherwise the liquid in the gas
cylinder may flow into the
heater, and caused fired
accident.
Carbon Monoxide Intoxication
Presention
• The burning of gas consumes
large amount of air and
produces some amount of
poisonoues gas like carbon
monoxide. Thus, the heater
must be fixed in a ventilated
location. Keep exhaust fan
running and the ventilation hole
opened.
• As this water heater is large
volume flue type, so flue duct
must be installed to drain the
combustion product out of the
room, keeping the air inside
the room clean.
• TG or NG users must pay
attention to the flame back
phenomenon when the gas
pressure is insufficient. This
causes the carbon deposit in
the burner to increase and affect
the normal use of the heater.
In such case, should the flame
turn from blue to yellow, the amount of carbon monoxide would increase. Stop
using the heater and contact the gas comany or the service center.
• The heater must be installed vertically.
Fig. 14
Fig. 13
Do not hang thing on or overhead

CAUTIONS FOR SAFETY
Prevent Eyes From Getting Hurt
Keep eyes away from the flame indicator window at a minimum safety distance
of 300mm during ignition. If the first attempt of ignition fails, wait 10-20
seconds before the next attempt.
Prevent No-water Burning In The Heater
After each shower, make sure that the flame is extinguished when the valve
is closed. If the flame still exists after the water valve is closed, something
must be wrong with the heater. Switch off the gas valve immediately and
contact the service center. Otherwise the heater may be damaged by overheating
and then may cause fire accident.
Freezing Prevention
Under low temperature, drain the water remaining in the heater after each use
completely. Otherwise the water may freeze and expand to damage the heater.
Reduce The Chance Of Encrustation
After shower and turning off the gas valve, drain out the hot water in the gas
cylinder until cool water is out. Then turn off the water inlet valve.
Do Not Use The Heater Water For Drinking
As there is always residuce in the heater, the water supplied by the heater is
only for general use, not for drinking.
Dealing With The Abnormal Conditions
* Stop the heater when there is strong adverse wind blowing into the bathroom
from outside causing the heater unable to operate.
• In case of abnormal burning (c.g. flame back, flamcout, yellow flame or black
smoke, etc.), unusual smell, noise or other abnormal matters, keep calm and
turn off the gas valve and contact the service center or the gas dealer.
Preventing Overheating Scald
• After shower, or when the water temperature control knob is still at “high”
position, be careful of the temperature of the water at the beginning and ending
of shower, as ir may remain high to scald your skin.
• During or right after shower, so not touch any part of the heater other than
the control knobs, especially the parts around the flame check window.
The Following Things Are Normal
• When the water pressure is lower than 0.03MPa, the heater cannot be ignited.
• The drain valve is dripping. When the water pressure is too high, the drain
valve will release the water so as to reduce the pressure to protect the heater.

CAUTIONS FOR SAFETY
MAINTENANCE
ACCESSORIES
• When the heater is supplying hot water to much point at he same time,
the hot water flow would be reduced, and at times not hot will issure at all.
• During shower, if the heater is operated for more than 20 minutes, the flame
will automatically turns off due to the 20-minute timer safety protection function
of the heater.
• Check the gas tube/pipe regularly for any defect. Contact service center for
any doubt.
• Clean the water filter regularly.
• Check the water leakage regularly.
• When the flame turns from blue to yellow with black smoke, contact the service
center immediately for help.
• Every half-year contact qualified professionals to check whether the heat
exchanger and burner are clogged.
• Always keep the cover of the heater clean.
Expansion Bolts (M6)
Expansion rubber plug 1
QUANTITY
1
4
1
1
2
1
Item Names
Water Heater
Mounting Screws
Manual
Gas Inlet Connection (with
rubber seal gasket)
(Please refer to the products for final accessories.)

TROUBLE SHOOTING
Symptoms
Reasons
Gas valve not open
Gas valve half open
Air in the gas pipe
Remedies
Turn on main valve or
replace the gas
Turn on the main
valve
Several opening the
water inlet gas pressure
ignition
Contact the repairer to
check the gas pressure
valve
Turn on the water
supply main valve
Use after de-frozen
Call repairer to check
water pressure, then
clean the filter
Turn the temperature
and gas rods properly
Open the ventilation
hole to let enough
fresh air in
Replace the batteries
Contact the service
center
Contact the service center
Contact the service
center
Contact the service
center
Re-ignite for use if the
ventilation is good
Continuos 20 minutes
operation
Ignition needle
movement
Water control unit
failure
Heat exchanger clogged
Burner clogged
Power shortage
Insufficient fresh air
Water temperature
control mistake
Inadequate water
supply
Freezing
Cold water valve closed
High
Low
Unsuitable
Pressure
Gas
Indicator lights on
(red)
Burning after closing
the water valve
High temperature of
water at “high”
Low temperature of
water at “high”
Bumpy noise in
ignition
Abnormal smell
Yellow flame
Deflagrate in ignition
No ignition after
opening water valve
The flame goes out