Gorenje GWH12NFEAC User manual

ИНСТРУКЦИЯ
Gorenje GWH12NFEAC

1
GAS WATER HEATER
–
USER MANUAL
AND INSTALLATION INSTRUCTIONS
ГАЗОВИЙ ВОДОНАГРІВАЧ
–
ІНСТРУКЦІЯ ЗМОНТАЖУ
ТА ЕКСПЛУАТАЦІЇ
ГАЗОВЫЙ ВОДОНАГРЕВАТЕЛЬ
–
РУКОВОДСТВО ПО УСТАНОВКЕ
ИЭКСПЛУАТАЦИИ
RUS
UA
GB

1
English
GWH --NFEAC G20 2013
Before using your gas water heater, please read
this manual carefully and keep it for future reference.
FLUE-TYPE
GAS WATER HEATER WITH
EXHAUST FAN
USER MANUAL
INSTALLATION INSTRUCTIONS
Read This Manual
Inside you will find many helpful hints on how to use and maintain your gas water
heater properly. Just a little preventative care on your part can save you a great deal
of time and money over the life of your gas water heater. You'll find many answers to
common problems in the chart of troubleshooting tips. If you review the chart of
Troubleshooting Tips first, you may not need to call for service.

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CONTENTS
USER MANUAL
Sociable remark .......................................................................................................3
Safety precautions....................................................................................................4
Features ..................................................................................................................6
Temperature adjustment .........................................................................................7
Additional adjustments.............................................................................................8
INSTALLATION INSTRUCTIONS
Safety precautions....................................................................................................9
Description of the appliance...................................................................................12
Structure and dimensions.......................................................................................13
Installation requirements ........................................................................................14
Installation method ................................................................................................15
Commissioning ......................................................................................................17
How to use gas water heater..................................................................................18
Repair and maintenance .......................................................................................20
TROBLESHOOTING
Troubleshooting .....................................................................................................22
SPECIFICATION
Specification...........................................................................................................24
ELECTRIC SCHEME
Electric scheme......................................................................................................25
CAUTION
•Contact an authorized service technician for repair or maintenance of this unit.
•Contact the authorized installer for installation of this unit.
•The gas water heater is not intended for use by young children or invalids
without supervision.
•Installation work must be performed in accordance with the national gas and
wiring standards by authorized personnel only.

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USER MANUAL
Sociable remark
When using this gas water heater, the following information’s must be
followed:
DISPOSAL:
Do not dispose this product as unsorted municipal waste. Collection of such waste
separately for special treatment is necessary.
It is prohibited to dispose of this appliance in domestic household waste.
For disposal, there are several possibilities:
•The municipality has established collection systems, where electronic waste
can be disposed of at least free of charge to the user.
•As old products contain valuable resources, they can be sold to scrap metal
dealers.
Wild disposal of waste in forests and landscapes endangers your health when
hazardous substances leak into the ground-water and find their way into the food
chain.

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USER MANUAL
Safety precautions
Please contact local gas company, gas management department or an
authorized installer for installing gas water heater.
Failure to install the appliance in accordance with all current regulations can
result in fierce hazard on user’s life.
Failure to install the appliance in accordance with all current regulations can
result in the guarantee becoming void.
Failure to comply with this warning implies the risk of personal injury, in some
circumstances even fatal.
Failure to comply with this warning implies the risk of damage, in some
circumstances even serious, to property, plants or animals.
Do not perform operations which involve opening the appliance.
Electrocution from the live components.
Personal injury caused by burns due to overheated components, or wound
caused by sharp edges.
Do not perform operations which involve removing the appliance from its
installation space.
Electrocution from the live components.
Flooding caused by water leaking from disconnected piping.
Explosions, fires or intoxication caused by gas leaking from disconnected piping.
Do not leave anything on top of the appliance.
Personal injury caused by an object falling off the appliance as a result of
vibrations. Damage to the appliance or items underneath it caused by the object
falling off as a result of vibrations.
Do not climb onto the appliance.
Personal injury caused by the appliance falling.
Damage to the appliance or any objects underneath it caused by the appliance
falling away from its installation space.
Do not climb onto chairs, stools, ladders or unstable supports to clean the
appliance.
Personal injury caused by falling from a height or cuts (stepladders shutting
accidentally).
Do not attempt to clean the appliance without first closing gas valve and
turning the switch to the OFF position.
Electrocution from live components. Explosions, fires or intoxication caused by
gas leaking from disconnected piping.

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USER MANUAL
Do not use insecticides, solvents or aggressive detergents to clean the
appliance.
Damage to plastic and painted parts.
Do not allow children or inexperienced individuals to operate the appliance.
Damage to the appliance caused by improper use.
If you detect a smell of burning or smoke coming from the appliance,
disconnect it from the electricity supply, turn off the main gas valve, open all
windows and call for assistance.
Personal injury caused by burns, smoke inhalation, intoxication.
If there is a strong smell of gas, turn off the main gas valve, open all windows
and call for assistance.
Explosions, fires or intoxication.
Do not touch the housing of the gas water heater during operation. During
operation only setting knobs can be touched.
Risk of scalding.
This appliance is not intended for use by persons (including children) with
reduced physical, sensory or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision or instruction concerning
use of the appliance by a person responsible for their safety. Children should
be supervised to ensure that they do not play with the appliance.
Warning!!
Turn off the power, gas valve and water valve after use.
Warning!!
Water with a temperature higher than 50°C can cause serious burns.
Always verify water temperature before use.
Warning!!
The device must be activated only in presence of water in the exchanger.
Warning!!
In case of contaminated water on the inlet of the device, the water on the outlet
is not suitable for drinking.

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USER MANUAL
Features
MICRO COMPUTER INTELIGENT CONTROL SYSTEM
•According to the temperature set by user and water inlet temperature the
microcomputer adjusts the parameters of the gas water heater to provide
constant water temperature on the outlet.
HIGH EFFICIENCY AND ENERGY SAVING
•Microcomputer controls the gas supply to save energy and adjusts the air
supply to optimize the combustion
START WITH ULTRA LOW PRESSURE
•The lowest working water pressure could be 0,2 bar (0,02 MPa) at water flow
3 l/min. This function can be used for residences with low water pressure.
INTELIGENT MEMORY FOR BEST ERGONOMICS
•After restart the gas water heater will work under the same set temperature as
before.
TEMPERATURE SETTING BY TOUCH
•By touching the keys you can easily set the temperature between 35°C and
65°C. This can satisfy the needs of different required temperatures by the
whole family.
MULTIPLE SAFETY PROTECTION
•Many safety protection functions are implemented:
a. Self-diagnostic function.
b. Flame out protection device.
c. Dual gas valve safety device.
d. Exhaust air overload pressure self-protection device.
e. Incomplete combustion self-test device.
f. Cleaning system for ignition delay.
g. Overheat protection…
Note:
Safety protection functions are tested under laboratory conditions.
Environment can affect the results of the safety protection.

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USER MANUAL
Temperature adjustment
•Press the on/off key on the control panel, the display illuminates and displays the
last set hot water temperature.
•Press the key Up or Down to set the desired hot water temperature. The
hot water temperature regulation range is from 35°c to 65°C, adjusting range is
1°C. There is a buzz for every press on the Up or Down keys.
•Turn on the hot water tap. The gas water heater will ignite automatically and the
hot water will come out. Several ignition attempts may be required to light the gas
for the first time.
Illuminated when water flows and fan working.
Illuminated regarding stage of the fire.
Illuminated when igniting gas.

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USER MANUAL
Additional adjustments
•When pressing key, the display will show water flow at the moment (range
between 0-16 l/minute).
•When pressing key for the second time, the GWH enters hot water amount
setting mode. Set the hot water amount by pressing Up and Down keys
from 01-99 in a unit of 10 l (from 10 l to 990 l).
Note: After setting hot water amount, open the tap. When pre-set hot water
amount will be reached, the gas water heater will buzz (1 minute) for a
warning.
Warning!!
Water with a temperature higher than 50°C can cause serious burns.
Always verify water temperature before use.
Please keep the valve at the cold water inlet completely open. Don't
reduce the water circulation by means of closing the valve.
Water flow
Hot water amount

9
INSTALLATION INSTRUCTIONS
Safety precautions
Please contact local gas company, gas management department or an
authorized installer for installing gas water heater.
Failure to install the appliance in accordance with all current regulations can
result in fierce hazard on user’s life.
Carbon monoxide detector must be installed in the same room as gas water
heater.
Use appliance only with type of gas, stated on the marking plate!
Install the appliance on a solid wall which is not subject to vibration.
Noisiness during operation.
When drilling holes in the wall for installation purposes, take care not to
damage any electrical wiring or existing piping.
Electrocution caused by contact with live wires. Explosions, fires or asphyxiation
caused by gas leaking from damaged piping. Damage to existing installations.
Flooding caused by water leaking from damaged piping.
Perform all electrical connections using wires which have a suitable cross
section.
Fire caused by overheating due to electrical current passing through undersized
cables.
Protect all connection pipes and wires in order to prevent them from being
damaged.
Electrocution caused by contact with live wires. Explosions, fires or asphyxiation
caused by gas leaking from damaged piping. Flooding caused by water leaking
from damaged piping.
Make sure the installation site and any systems to which the appliance must be
connected comply with the applicable norms in force.
Electrocution caused by contact with live wires which have been installed
incorrectly. Damage to the appliance caused by improper operating conditions.
Use suitable manual tools and equipment (make sure in particular that the tool
is not worn out and that its handle is fixed properly); use them correctly and
make sure they do not fall from a height. Replace them once you have finished
using them.
Personal injury from the falling splinters or fragments, inhalation of dust, shocks,
cuts, pricks and abrasions. Damage to the appliance or surrounding objects
caused by falling splinters, knocks and incisions.

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INSTALLATION INSTRUCTIONS
Make sure any portable ladders are positioned securely, that they are suitably
strong and that the steps are intact and not slippery and do not wobble when
someone climbs them. Ensure someone provides supervision at all times.
Personal injury caused by falling from a height or cuts (stepladders shutting
accidentally).
Make sure any rolling ladders are positioned securely, that they are suitably
strong, that the steps are intact and not slippery and that the ladders are fitted
with handrails on either side of the ladder and parapets on the landing.
Personal injury caused by falling from a height.
During all work carried out at a certain height (generally with a difference in
height of more than two meters), make sure that parapets are used to surround
the work area or that individual harnesses are used to prevent falls. The space
where any accidental fall may occur should be free from dangerous obstacles,
and any impact upon falling should be cushioned by semi rigid or deformable
surfaces.
Personal injury caused by falling from a height.
Make sure the workplace has suitable hygiene and sanitary conditions in terms
of lighting, ventilation and solidity of the structures.
Personal injury caused by knocks, stumbling etc.
Protect the appliance and all areas in the vicinity of the work place using
suitable material.
Damage to the appliance or surrounding objects caused by falling splinters,
knocks and incisions.
Handle the appliance with suitable protection and with care.
Damage to the appliance or surrounding objects from shocks, knocks, incisions
and squashing.
During all work procedures, wear individual protective clothing and equipment.
Personal injury caused by electrocution, falling splinters or fragments, inhalation
of dust, shocks, cuts, puncture wounds, abrasions, noise and vibration.
Place all debris and equipment in such a way as to make movement easy and
safe, avoiding the formation of any piles which could yield or collapse.
Damage to the appliance or surrounding objects from shocks, knocks, incisions
and squashing.
All operations inside the appliance must be performed with the necessary
caution in order to avoid abrupt contact with sharp parts.
Personal injury caused by cuts, puncture wounds and abrasions.

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INSTALLATION INSTRUCTIONS
Reset all the safety and control functions affected by any work performed on
the appliance and make sure they operate correctly before restarting the
appliance.
Explosions, fires or asphyxiation caused by gas leaks or an incorrect flue gas
exhaust. Damage or shutdown of the appliance caused by out-of-control
operation.
Before handling, empty all components that may contain hot water, carrying
out any bleeding if necessary.
Personal injury caused by burns.
Descale the components, in accordance with the instructions provided on the
safety data sheet of the product used, airing the room, wearing protective
clothing, avoid mixing different products, and protect the appliance and
surrounding objects.
Personal injury caused by acidic substances coming into contact with skin or
eyes; inhaling or swallowing harmful chemical agents. Damage to the appliance
or surrounding objects due to corrosion caused by acidic substances.
If you detect a smell of burning or smoke, keep clear of the appliance,
disconnect it from the electricity supply, open all windows and contact the
technician.
Personal injury caused by burns, smoke inhalation, asphyxiation.
If there is a strong smell of gas, turn off the main gas valve, open all windows
and call for assistance.
Explosions, fires or intoxication.
Do not touch the housing of the gas water heater during operation. During
operation only setting knobs can be touched.
Risk of scalding.
No other oxygen consumer devices (burners, heaters, clothes dryers) should
be installed in the same room as gas water heater.
Risk of asphyxiation.

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INSTALLATION INSTRUCTIONS
Description of the appliance
1. Fan assembly
2. PCB heat shield
3. Screw
4. Thermostat (80°C)
5. Front cover
6. Heat exchanger assembly
7. Fixed sheet
8. Screw
9. Water flow sensor
10.Burner assembly
11.Fix holder
12.Flame baffle
13.Gas inlet joint
14.Water outlet assembly
15.Water inlet assembly
16.Screw
18.Gas distributer NG
19.Screw
20.Gas valve assembly
21.Transformer cover
22.Transformer assembly
23.Ignition system assembly
24.Ignition system fix holder
25.Screw
26.Main controller assembly
27.Back cover assembly
28.Capacitor
29.Screw with flat washer
30.Heat insulation sheet
31.Wing pressure switch
assembly
32.Pressure transferring tube
protection spring
33.Pressure transferring tube
34.Drought diverter assembly
35.Ignition electrode
36.Flame detector
37.O-ring
38.O-ring
39.Water outlet pipe retainer

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INSTALLATION INSTRUCTIONS
Structure and dimensions
Note: This picture is for reference only.
Power cord
Hot water outlet G1/2 Gas inlet G1/2
Cold water inlet G1/2

14
INSTALLATION INSTRUCTIONS
Installation requirements
•The gas water heater cannot be installed in bedroom, basement, bathroom or
any other place with poor ventilation. To assure enough fresh air, an air inlet
with an area of at least 300 cm
2
should be installed in the room in which gas
water heater is installed.
•The installation height of gas water heater is around 1,6m from the floor.
•Electric equipment or lines are not allowed to be placed on top of the gas
water heater. The horizontal distance between the gas water heater and
electric equipment should be more than 400 mm.
•Distance between the gas water heater and any flammable materials should
be 150 mm at least.
•In order to allow easy access to the appliance for maintenance operations
please leave a space of at least 600 mm in front of the gas water heater.
•The gas water heater should not be installed outdoor or in any places with
strong wind.
•In case that the appliance is to be installed on wall or holder made from a
flammable materials, metal heat-preventing plate in 100 mm more in size than
gas water heater must be used. Distance between metal plate and wall
(holder) must be at least 10 mm.
•The gas water heater is fitted with an electrical supply cable for a 230V~50Hz
mains power supply. It is to be connected to a single phase power supply with
an earth. In order to protect the heater it is necessary to have a bipolar switch
with a minimum opening distance of 3mm. After use, please disconnect the
power supply.
•Power socket should be located on the side from the product, protected from
splashing water or moist.
•Install gas water heater in vertical position.
•Do not install gas water heater in room, where appliance is subjected to
freezing.

15
INSTALLATION INSTRUCTIONS
Installation method
1. Installation of main body
Drill holes in the wall according to the dimensions of the gas water heater and fix
the M6 expansion bolts. Hang up the hanging bracket slot of the gas water heater
on the expansion bolt. Fix the gas water heater by screwing the nuts. Fix the
lower hanging brackets with two plastic expansion bolts.
2. Installation of water pipes
•The size of cold and hot water connector is G1/2.
•Before connecting up the appliance it is necessary to thoroughly flush and
purge the water and gas pipes in order to remove filings or other waste from
them.
•For the convenience of maintenance please install the water inlet valve near
the appliance.
•Connect the cold water and hot water pipes in correct order. Markings are
located on the bottom of the gas water heater near the connectors.
•Purge air from water pipes by opening all the taps, hot and cold. Then turn off
the taps and check for water tightness.
Important!!
The maximum inlet water pressure must be limited to 10 bar. If the water
supply is more than 10 bar or subject to pressure fluctuations above 10
bar, a pressure limiting valve must be installed to limit the pressure to 10
bar maximum.
Minimum water pressure is 0,2 bar.
Warning!!
Water with a temperature higher than 50°C can cause serious burns.
Always verify water temperature before use.
Gas
valve Water inlet valve
Draining valve
Power plug
Gas valve
Front cover
Flue duct connector
Display panel Power socket