Thermann 135THM4N Programming manual

OWNER’S
MANUAL
& INSTALLATION GUIDE
MODELS 135THM4N | 135THM4P
170THM4N | 170THM4P
4 Star Gas Hot Water Heater
Specifications and materials may change without notice.
Eective for all Thermann 4 star water heaters manufactured
and sold after 1st December 2013.
For advice, repairs and service,
call: 1800 080 055
Carefully remove all packaging and
transit protection from the heater
before installation. Dispose of the
packaging responsibly using re-
cycling facilities where they exist.
Installation Details
Owner’s Information
Warranty
H4127 Rev. B

Thermann Owner’s Manual
4 Star Gas Hot Water Heater
H4127 Rev. B
Installation Details 3
Plumbing Connections 4
Gas Connections 7
Specications 10
CommissioningAdjustments 11
Owner’sInformation 12
SystemMaintenance 14
Troubleshooting 15
Warranty 16
Contents

Thermann Owner’s Manual
4 Star Gas Hot Water Heater
3
H4127 Rev. B
Thermann Owner’s Manual
3
Installation Details
Outdoor Tank Installation
The water heater must be installed
outdoors, with the minimum
clearances as shown in the figure
below.
We recommend a plinth be installed
under the water heater where the
water heater is subjected to wet
conditions.
Minimum clearance around the
windows and doors must be
maintained – refer to AS/NZS 5601.1.
Location
The water heater should be located
as close as possible to the most
frequently used hot water outlet.
Ensure that the data label is clearly
visible and that there is adequate
access for servicing the unit.
Note: All models are equipped with a
sacrificial anode, accessible through
the top cover. Allow 50% of the height
of the water heater for clearance
above to replace the anode.
A = 500mm B=300mm min
For further details, refer to
AS/NZS 5601.1 – Gas Installations –
General Installations

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4 Star Gas Hot Water Heater
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H4127 Rev. B
Installation Requirements
This water heater must be installed
by a licensed tradesperson, and in
accordance with:
• AS/NZS3500.4 "Plumbing
and Drainage - Heated Water
Services”.
• AS/NZS 5601.1 “Gas Installations”.
• Local authority regulations.
• Outside Australia, please refer to
local plumbing and building codes
and regulations.
• Notice to Victorian customers
from the Victorian Plumbing
Industry Commission – this water
heater must be installed by a
licensed person as required by the
Victorian Building Act (1993). Only
a licensed person will give you a
compliance certificate, showing
that the work complies with all
the relevant Standards and only a
licensed person will have insurance
protecting their workmanship for
6 years.
Water Supply Pressure
This water heater is designed for direct
connection to water supply pressures
of no greater than:
All Models – 1120kPa
Where the mains pressure can exceed
or fluctuate beyond the pressure
shown above a pressure limiting
device (complying with AS1357) must
be fitted in the cold water inlet supply.
This device must be installed after
the isolating valve and set below the
pressure shown above. Note during
periods of lower demand water
pressure may increase.
Pool Heating
This water heater must not be used for
pool heating.
Plumbing Connections

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4 Star Gas Hot Water Heater
5
H4127 Rev. B
Plumbing Connections
Pressure & Temperature Relief Valve
The Pressure & Temperature Relief
Valve is supplied loose with the water
heater. The valve rating is:
All Models – 1400kPa
The PTR valve must be installed
directly into the top socket marked
“RELIEF VALVE”. The drain line from
this valve must run in a continuously
downward direction in a frost-free
ambient position with the discharge
end left open to atmosphere
permanently.
The PTR Valve is not intended to
enable connection of the water
heater to supplementary energy
sources such as solar panels or slow
combustion stoves (refer AS/NZS
3500.4 for guidance on these types of
installations).
The PTR Valve must not be tampered
with or removed. The water heater
must not be operated unless this valve
is fitted and in working order.
The PTR Valve should be checked for
adequate performance or replaced at
intervals not exceeding 5 years, or less
in areas where local regulations apply.
Important: The PTR Valve and its drain
outlet pipe must not be sealed or
blocked. It is normal for the PTR valve
to leak a small amount of water during
heating cycles.
Danger: Failure to operate the relief
valve easing lever at least once every
six (6) months may result in a problem
with the water heater and in some
cases the tank may explode.
Warning: A separate drain line must
be run for this relief valve. It is not
permitted to couple drain lines from
relief valves into a single common drain
line.
Cold Water Connection
An approved isolating valve, non
return valve, line strainer (optional but
recommended), and union must be
fitted between the supply main and
either of the RP¾/20 sockets marked
“INLET” at the bottom of the water
heater. All fittings must be approved
by the relevant Authority. See the
diagram on page 6 for details.
Note: Brass plugs are supplied with
the water heater to plug o the
unused fittings. Ensure that a sealing
material is applied to the plugs to
prevent leaking.
Note for S.A. and W.A.: It is a state
requirement that a Expansion Control
Valve be fitted on the cold water
supply line between the non return
valve and the water heater. See the
diagram on page 6 for details.

Thermann Owner’s Manual
4 Star Gas Hot Water Heater
6
H4127 Rev. B
Plumbing Connections
Hot Water Connection
The hot water pipe should be
connected to either of the RP¾/20
sockets marked "OUTLET" at the
top of the unit. Please check local
regulations regarding the use of hot
water supply pipework that is not
made of copper.
Insulation of Pipes
For the most economical operation of
the water heater, it is recommended
that all hot water lines are insulated.
Where the hot water pipes are
installed outdoors, the insulation
should be UV stabilised.
Note: a combined isolating valve/non-return valve/line strainer may be used.
Expansion Control Valve only required where local regulations demand although it
is recommended in areas where the water saturation index is above 0.40
(see page 12).
Union
Connection
Non-return
Valve
Line
Strainer
Cold Water
Inlet
Drain
Expansion
Control Valve
Isolating Valve
(Spindle Vertical)
Inlet Connections
Temperature Protection
Water heaters can produce very hot
water. To reduce the risk of scald
injury, it is mandatory under the
requirements of Australian Standard
AS/NZS3500.4 that a suitably
approved temperature control device
be fitted to the hot water supply to
outlets used primarily for personal
hygiene. This valve should be checked
at regular intervals to ensure its
operation and settings remain correct.

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4 Star Gas Hot Water Heater
7
H4127 Rev. B
Gas Connections
Refer to the Data Label for correct gas
type. Gas piping should be connected
through the side of the case (see
figure below).
The plastic grommet must be installed
around the pipe and clipped into the
case.
The gas control is fitted with a
RC½"/15 socket. A union connection
should be used.
Gas pipe sizes should be in accordance
with AS/NZS 5601.1.
Warning: This water heater should be
checked on installation and the test
point pressure set in accordance with
that marked on Data Label.
Adjust gas pressure as required to
achieve specified gas test point
pressure. If problems are encountered
in this process contact the Reece
Customer Care Department on
1800 080 055.
Failure to accurately set the pressure
can result in damage to the water
heater, and automatically cancels the
Manufacturer’s Warranty. This water
heater is to be installed only by an
Authorised Person.
Gas entry

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4 Star Gas Hot Water Heater
8
H4127 Rev. B
Gas Connections
Filling the Water Heater
The water heater must be filled with
water before lighting.
Open all hot water taps. Open isolating
valve at the cold water inlet slowly and
allow water heater to fill until water
flows through the system. Close each
hot water tap after the air is expelled
from its line.
Open the PTR Valve for approximately
10 seconds by lifting the lever on the
valve to ensure water is relieved to
waste through the relief drain pipe.
Lower lever gently and check that it
closes correctly.
Thermostat and
gas control knob Igniter
Lighting the Water Heater
Instructions for lighting procedure are
on the inside of the access cover and
shown below:
1. Turn the knob fully clockwise to
the“•”(o)position.
2. Wait five (5) minutes so any build-
up of unburnt gas can escape.
3. Turn the knob to the (pilot)
position.
4. Depress the knob fully (until
disappears below housing) and
after thirty (30) seconds, whilst
keeping the knob depressed,
repeatedly press the igniter button
(for up to 40 seconds) until the
pilot flame ignites.
Note: It is not possible to depress
the knob fully if the gas control
has activated its safety shut-
o feature. In this case, wait 60
seconds for the gas control to
reset.
5. Keep the knob depressed for
twenty (20) seconds after the pilot
flame lights. The pilot flame can
be observed if a mirror is placed
directly below the pilot assembly.
6. Release the knob and check if the
pilot is still alight.

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4 Star Gas Hot Water Heater
9
H4127 Rev. B
Gas Connections
7. If pilot has failed to light or has not
remained alight, turn gas control
knobto“•”(o).Waitve(5)
minutes for the escape of unburnt
gas, then begin again at step 3.
8. When the pilot flame remains
alight with the knob released, turn
the knob anticlockwise to one of
the number settings. A setting of
“6” is recommended and this will
give a water temperature of about
60ºC.
9. Turn the knob to a higher number
for higher water temperatures or
a lower number for lower water
temperatures.
10. Replace the access panel and
ensure that it is firmly in position
before operating the appliance.
11. If the burner does not light at
the selected setting, the water
may already be at the selected
temperature.
Warning: Do not attempt to light if the
pilot is out and the knob is in the “ON”
position (one of the number settings).
Follow steps above.
Shutting Down The Water Heater
1. Turntheknobto“•”(o)position.
2. Turn water o at water isolating
valve.
Turning O Gas To The Appliance
1. Turntheknobto“•”(o)position.
2. Turn o the gas isolation valve.
To maintain safety and eciency this
heater should be serviced annually by
an authorised service agent.
Note: Instruct owner in water heater
operation before leaving.

Thermann Owner’s Manual
4 Star Gas Hot Water Heater
10
H4127 Rev. B
Specifications
System Components
Component Description
1PTR Valve
2Hot Water Outlet To House
3Cold Water Inlet
Tank Specifications
Model Numbers 135THM4N
135THM4P
170THM4N
170THM4P
Capacity (L) 135 170
Net Weight Empty (kg) 80 86
Relief Valve Pressure (kPA) 1400 1400
Gas Consumption 135THM4N:
23.5 MJ/h
135THM4P:
22.5 MJ/h
170THM4N:
27 MJ/h
170THM4P:
26 MJ/h
Dimensions (mm)
A – Height 1600 1895
B – Hot Water Outlet 1325 1620
C – Cold Water Inlet 220 220

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4 Star Gas Hot Water Heater
11
H4127 Rev. B
Commissioning Adjustments
Note: Commissioning adjustments
can be done only by a licensed
tradesperson.
Main Gas Pressure Regulator
Adjustment
The main burner pressure must be set
at installation and should not need
readjustment.
The pressure is best checked by
connecting a water manometer or
equivalent to the test point nipple on
the gas control. The test point pressure
must comply with the value on the
Data Label.
If adjustment is necessary, proceed as
follows:
1. Remove the securing screw (1)
from the top of the Gas Control
and lift the plastic cover (2)
upwards.
2. Locate the regulator adjustment
screw on the lower left hand side
of the Gas Control (3).
3. Light the burner. Rotate
adjustment screw clockwise to
increase, or anti-clockwise to
decrease pressure.
4. Replace the plastic cover and
securing screw.
Note: For propane water heaters,
the pressure adjustment is at the gas
cylinder regulator. Adjustment should
be conducted as required to ensure
correct supply pressure to water
heater as per AS/NZS 5601.1.
Ignition System (Spark Gap)
Check the gap between the spark
electrode and the pilot burner is 3 –
5mm and adjust as necessary. Push the
igniter button to test for a spark.
Warning: Test the spark gap only
where there is no build up of gas.
Test The Water Heater
Test operation by lighting the water
heater (see Lighting the Water Heater,
earlier in this manual).
1
3
2

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4 Star Gas Hot Water Heater
12
H4127 Rev. B
Owner’s Information
Safety
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 and animals should be
supervised to ensure that they do not
interfere with the appliance.
DO NOT place articles on or against
this appliance.
DO NOT use store chemicals or
flammable materials, or spray aerosols
near this appliance.
DO NOT operate with panels or covers
removed from the appliance.
Water Quality
Your Thermann water heater has been
manufactured to suit water conditions
of most Australian metropolitan
supplies. Please note that harsh water
supplies can have a detrimental
eect on the water heater and its life
expectancy. If you are unsure about
your water quality you can obtain
information from your local water
supply authority.
The water heater is designed for use
in areas where the Total Dissolved
Solids (TDS) content of the water
supply is less than 2500 mg/L. In areas
where the TDS exceeds 600mg/L the
magnesium alloy anode (supplied in
the heater) may become over reactive.
To alleviate this, the anode should
be replaced with an aluminium alloy
anode, available from your local Reece
branch.
The saturation index (SI) is a measure
of the corrosiveness or carbonate
scaling potential of water. Negative SI
indicates corrosive water that is non-
scaling. The more negative the SI the
more corrosive the water. Conversely,
a more positive SI indicates a greater
potential for scaling. If the SI is greater
than 0.40 an expansion control valve
should be fitted as shown in the
diagram on page 6.

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4 Star Gas Hot Water Heater
13
H4127 Rev. B
How Long Will The Heater Run Each
Day?
The length of time that the heater will
run each day will vary dependent upon
the amount of hot water being used by
the household.
Caution: All water heaters have the
ability to produce hot water in a
surprisingly short time. To reduce the
risk of scald injury, it is mandatory
under the requirements of Australian
Standards AS3500 that an Australian
Standards approved temperature
control valve be fitted to the hot water
supply pipe work. This valve should be
checked at regular intervals to ensure
its operation and settings remain
correct.
What Should I Do During Holidays?
If the hot water system is not used,
for two weeks or more, a quantity
of hydrogen gas, which is highly
flammable, may accumulate in the
water heater. To dissipate this gas
safely, it is recommended that a hot
tap be turned on for several minutes
at a sink, basin or bath but not a
dishwasher, clothes washer, or other
appliance. During this procedure
there must be no smoking, open
flame or any other electrical appliance
operating nearby. If hydrogen is
discharged through the tap, it will
probably make an unusual noise
similar to air escaping.
Note: There are no user serviceable
components in the system.
How Does My System Work?
The Thermann water storage tank
is used to store the heated water
ready for household use. It has a high
temperature vitreous enamel lining to
provide long life, and a high density
polyurethane insulation to ensure
minimal heat loss.
Never turn the gas supply o during
normal use.
Owner’s Information

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4 Star Gas Hot Water Heater
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H4127 Rev. B
Six Monthly Service – By Owner
Open the Pressure & Temperature
Relief Valve for approximately 10
seconds by lifting the lever on the
valve to ensure water is relieved to
waste through the relief drain pipe.
Lower lever gently and check that it
closes correctly.
Other than this, personally inspecting
or servicing any part of the system is
not recommended.
Five Year Service – By Authorised
Personnel Only
After each 5 years of operation you
should contact the local service agent
to replace all safety valves and anodes
to ensure continued system life and
operational safety. In locations where
the water has a TDS greater than 600
mg/L (see Water Quality on page 12),
this service is recommended every 3
years.
The five year service must be carried
out by a licensed tradesperson.
The service should include the
following:
• Replace the Pressure &
Temperature Relief Valve.
• Replace the anode.
• Flush the water heater by doing
the following:
i. Turn o gas and electricity
supply.
ii. Turn o the cold water supply
to the water heater at the
isolating valve.
iii. Gently operate the easing lever
on the Pressure & Temperature
Relief Valve to release the
pressure in the water heater.
iv. Disconnect the cold water inlet
union to the heater and attach
a drain hose.
v. Gently operate the Pressure &
Temperature Relief Valve to let
air into the heater and allow
water to escape through the
hose.
vi. Flush the heater until clear
water appears then reconnect
all fittings, fill the heater and
restore the gas and electricity
supply.
System Maintenance

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4 Star Gas Hot Water Heater
15
H4127 Rev. B
What Should I Check Before
Making A Service Call?
If there is not enough hot water, it
is recommended that the following
points be considered before making
a service call. If after checking the
following points the problem has not
been identified, please contact Reece
Customer Care on 1800 080 055.
No Hot Water
• Confirm the water heaters gas
burner and/or pilot is on and
operating. If o, see lighting
instructions on page 8.
• Is the Pressure & Temperature
Relief Valve discharging too much
water?
• Do you have the correct size water
heater for your requirements?
Sizing details are available from
your local Reece branch.
• Is one outlet (such as the shower)
using more hot water than you
think?
• Carefully review the family's hot
water usage and if necessary
check the shower flow rates with
a bucket, measuring the amount
of water used over that period
of time. If it is not possible to
adjust water usage patterns, an
inexpensive flow control valve
can easily be fitted to the shower
outlet.
• Replace faulty tap washers and
have your plumber rectify any
leaking pipe work.
• Consider that often the hot
water usage of showers, washing
machines and dishwashers can
be under estimated. Review these
appliances to determine if your
daily usage is greater than the
capability of your water heater.
• Is there a leaking hot water pipe
or dripping hot water tap? A small
leak can waste a large quantity of
hot water.
Water Discharge from the PTR Valve
It is normal for the PTR to allow a
small quantity of water to escape
during the heating cycle. The amount
of discharge will depend on hot water
usage.
Continuous trickle (PTR)
This is most likely due to a build up of
foreign matter. In this case try gently
raising the easing lever on the Pressure
& Temperature Relief Valve for a few
seconds then release gently. This may
dislodge a small particle of foreign
matter and rectify the fault.
Steady flow (PTR) – more than 20L
per day
This may be caused by excessive water
supply pressure, a faulty Pressure &
Temperature Relief Valve or a faulty
gas control. Turn o the gas supply
and contact your licensed plumber.
Troubleshooting

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4 Star Gas Hot Water Heater
16
H4127 Rev. B
Warranty
Thermann Hot Water Unit
Manufactured by GWA Group Limited
(“GWA”)
Terms of Warranty and Replacement
Guarantee
All Thermann water heaters
manufactured and sold after 31
December 2011 are backed by a
comprehensive one (1) year full parts
and labour warranty (conditions apply
– see below).
Furthermore, the Thermann tank
includes a guarantee to replace your
hot water unit if the inner cylinder fails
within seven (7) years (conditions
apply– see below).
The terms of the Warranty and
replacement guarantee are set out
below.
1 Year Comprehensive Warranty
Your hot water system and its
components (“Unit”) are covered by
1 year (parts and labour) warranty
against defective factory materials or
workmanship.
This warranty period commences
from the date of installation of the
Unit providing you have proof of this
installation date. Where the date
of completion of installation is not
known or cannot be proven, then this
warranty will commence one (1) month
after the date of manufacture (refer to
the data label on the unit).
Replacement Guarantee
If an inner cylinder fails on a Thermann
hot water unit within a further six (6)
years after the end of the initial one (1)
year warranty period, GWA will provide
a free replacement hot water unit at
the nearest approved GWA agent
or GWA oce to the owner’s home.
Under this replacement guarantee,
the transport, installation and labour
costs of delivering the replacement hot
water unit and removing and replacing
the existing hot water unit with the
replacement hot water unit will be
the responsibility of the owner of the
existing hot water unit.
Conditions of Warranty and
Replacement Guarantee
The benefits provided to you by the
warranty and replacement guarantee
(collectively “Warranty”) are in
addition to the guarantees and other
rights and remedies available to you
under the Australian Consumer Law
(“ACL”).
If the Unit fails to conform to this
Warranty during the applicable
period, GWA will replace any failed
component or where necessary, in the
absolute discretion of GWA, replace
the Unit free of charge including
reasonable labour costs incurred in
normal business working hours.
This Warranty only applies to defects
which have arisen solely from faulty
materials or workmanship in the Unit
and does not apply to other defects
which may have arisen as a result
of, without limitation, the following:

Thermann Owner’s Manual
4 Star Gas Hot Water Heater
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H4127 Rev. B
accidental damage, abuse, misuse,
maltreatment, abnormal stress
or strain, harsh or adverse water
conditions including excessive water
pressure or temperature, neglect of
any kind or otherwise as a result of
any use of the Unit contrary to the
product manual or other instructions
provided with this water heater.
Alterations or repair of the Unit other
than by an accredited and licensed
service agent or technician are not
covered. Attachment of accessories or
use of non genuine replacement parts
other than those manufactured or
approved by GWA are not covered by
this Warranty.
This Warranty applies only to the
Unit and does not cover any ancillary
plumbing or electrical parts supplied
by the installer such as pressure
limiting valve, tempering valve, line
strainer, stop cocks, non-return valve,
electrical switches, pumps or fuses, or
faulty installation.
The Unit must be installed by a
licensed plumber in accordance with
information set out in the Owner’s
Manual and/or Installer’s Guide
supplied with the Unit and/or any
relevant statutory requirements.
In addition to this Warranty, certain
legislation (including the ACL) may
give you rights which cannot be
excluded, restricted or modified. This
Warranty must be read subject to
such legislation and nothing in this
Warranty has the eect of excluding,
restricting or modifying those rights.
If GWA fails to meet a guarantee under
the ACL, your remedy for such failure
may be limited to any one or more of
the following:
•replacementoftheUnit;
•repairoftheUnit;
•refundingthecostoftheUnit;
•paymentofreasonablecostsof
 havingtheUnitrepaired;
•paymentinrespectofthereduced
value of the Unit.
Any defective part of the Unit must
be returned to the point of sale before
replacement can be considered under
the terms of this Warranty. If the costs
of returning any defective parts are
unreasonable, please contact GWA on
1300 412 612 so that we can arrange a
collection if appropriate.
Warranty claims can be made at the
point of sale or by posting a warranty
claim to GWA (contact details listed
below) within one (1) month of the
appearance of a defect. Warranty
claims under this extended warranty
must include the following details:
•DateofPurchase;
•LocationofPurchase;
•ProofofPurchase;
•DateofInstallation;
•ContactDetails
•ProductSerialNumber
Business Address
GWA Group Limited
Level 1, 7-9 Irvine Place
Bella Vista, NSW 2151, Australia
Telephone: [phone]
Warranty

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4 Star Gas Hot Water Heater
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H4127 Rev. B
Warranty
Note: If the Unit is located in a
position that does not comply
with the installation instructions or
relevant statutory requirements, then
this Warranty does not cover major
dismantling or removal of cupboards,
doors, walls or special equipment
and/or excessive labour, at the
determination of GWA, to make the
Unit accessible for repair or
replacement.
As required by legislation, including
under the ACL, any claims for damage
to furniture, carpets, walls, foundations
or any other consequential loss either
directly or indirectly due to defects
of any kind in a Unit will only be met
by GWA where the damage could be
considered reasonably foreseeable.
Our goods come with guarantees
that cannot be excluded under the
Australian Consumer Law. You are
entitled to a replacement or refund for
a major failure and for compensation
for any other reasonably foreseeable
loss or damage. You are also entitled
to have the goods repaired or replaced
if the goods fail to be of acceptable
quality and the failure does not
amount to a major failure.

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4 Star Gas Hot Water Heater
19
H4127 Rev. B
Warranty

Thermann Owner’s Manual
4 Star Gas Hot Water Heater
H4127 Rev. B
Serial Number
For advice, repairs and service,
call: 1800 080 055