Thermann 16NG50-6 User manual

INSTALLATION
INSTRUCTIONS
GAS CONTINUOUS FLOW
WATER HEATERS
FOR MODELS
16NG50-6/16LP50-6, 16NG60-6/16LP60-6,
20NG50-6/20LP50-6, 20NG60-6/20LP60-6,
26NG50-6/26LP50-6, 26NG60-6/26LP60-6

2 INSTALLATION INSTRUCTIONS

3INSTALLATION INSTRUCTIONS
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IMPORTANT SAFETY INSTRUCTIONS
DO NOT INSTALL INDOORS
The unit is for outdoor installation only. Never install indoors. It will
be extremely dangerous because LWZLOOFDXVHR[\JHQGH¿FLHQF\
and incomplete combustion.
WATCH FOR GAS LEAK
When gas leak is noticed, stop using the unit immediately and close
the gas valve.
CONFIRM TYPE OF GAS AND POWER SUPPLY
Make sure to use the gas type as well as power supply (voltage/
frequency) as indicated on the label located on the cabinet side.
Natural Gas or Propane will be printed on the gas type label.
FREEZE PREVENTION
This unit comes equipped with electric heaters that prevent the water heater from freezing.
To enable this freeze prevention system to operate there must be an electrical power supply connected to
the unit.
The freeze prevention devices will not operate if the electrical power source is not connected.
The electric defrost heaters are installed inside the water heater only. All external hot and cold water supply
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SECURE SERVICE SPACE
Make sure there is enough space around the unit for
checking, service and maintenance.
Danger
Warning
Caution
No Fire Prohibited

4 INSTALLATION INSTRUCTIONS
DANGER OF WET HANDS
Do not touch power plug with wet hands. It can cause
electric shock.
INSERT POWER PLUG FULLY
INTO POWERPOINT
Check that the power plug is clean and undamaged,
then fully insert into the power point.
DO NOT PULL POWER CORD
Do not remove the power plug by pulling the cord.
Hold the plug when removing the power cord.
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DO NOT USE POWER CORD BUNDLED
Never use power cord in a bundled condition.
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DO NOT REPLACE POWER CORD
If the power supply cord is damaged, it should be replaced by a cord
available from REECE agents. The power cord must be replaced by
an authorised person to prevent accidents.
ELECTRICAL CONNECTION
Prohibited
Prohibited
Warning
Check
WARNING:
For continued safety of this appliance it must be installed, operated and maintained
in accordance with the manufacturer's instructions.

5INSTALLATION INSTRUCTIONS
This product is an external electronic gas hot water heater.
These units are factory set to deliver 50°C or 60°C depending on the model purchased.
If the unit has a factory setting temperature higher than 50°C and is intended to deliver water directly to
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tempering valve into the hot water piping to any bathroom and/or ensuite.
For use as a solar booster, the setting temperature must be altered to 70°C (Refer to wiring diagram
attached on the unit).
For this application, it is suitable to connect to a Thermann solar evacuated tube manifold assembly. In that
case, these instructions must be read in conjunction with the Thermann solar hot water system technical
(installation) manual.
One optional remote control can be provided for complete hot water temperature selection. If this option
is used an approved temperature limiting device must be installed on any units with a delivery temperature
above 50°C.
THIS HOT WATER UNIT IS NOT FOR POOL OR SPA HEATING
GENERAL
The Thermann Continuous Flow must be installed in accordance with the following:
(1) These instructions;
(2) National Construction Code and Local authority regulations;
(3) AS/NZS 3500.4 “National Plumbing and Drainage Code, Part 4 Hot Water Supply Systems”,
(4) The Australian standard for gas installations AS/NZS 5601;
(5) Any other statutory regulation that may apply;
(6) A notice of intention to install shall be lodged with the relevant local
Gas Authority prior to installation.
DELIVERY INSPECTION
The Thermann Gas Continuous Flow hot water heater unit is supplied fully assembled and ready for
installation.
The installer, upon delivery of the unit, should immediately remove all packing materials and inspect the unit
for damage, and ensure that the unit supplied is correct for the gas supply to which it is to be connected.
If any concerns, please report any damage or discrepancies to Reece, quoting the serial number and model
number, which can be found on the outside of the cabinet.
INSTALLATION MUST BE CARRIED OUT ONLY BY AN AUTHORISED AND
APPROPRIATELY LICENSED PERSON.
INTRODUCTION

6 INSTALLATION INSTRUCTIONS
EXPLODED DIAGRAM OF UNIT
Model : 16/20
PARTS DESCRIPTION
1. FLUE OUTLET
2. GAS VALVE
3. CIRCUIT BOARD
4. BURNER CASE
5. HOT WATER OUTLET
6. COLD WATER INLET
7. GAS SUPPLY INLET
8. HEAT EXCHANGER
9. WATER VOLUME
PROPORTIONAL VALVE
Model : 26
PARTS DESCRIPTION
1. FLUE OUTLET
2. GAS VALVE
3. CIRCUIT BOARD
4. BURNER CASE
5. HOT WATER OUTLET
6. COLD WATER INLET
7. GAS SUPPLY INLET
8. HEAT EXCHANGER
9. WATER VOLUME
PROPORTIONAL VALVE
1
4
8
765
3
2
9
1
4
9
8
765
3
2

7INSTALLATION INSTRUCTIONS
DIMENSIONS CONNECTIONS
REMOTE CONTROLLER
CABLE ENTRY
HOT WATER OUTLET
R3/4 /20
POWER CABLE ENTRY
WATER INLET FILTER
PRESSURE RELIEF VALVE
COLD WATER INLET
R3/4 /20 334
12
546 12
15200350
6868
584
39 520 25
6868
GAS SUPPLY INLET
R3/4 /20

8 INSTALLATION INSTRUCTIONS
TECHNICAL DATA
DATA PLATE
Left outside of cabinet.
GAS TYPE
The gas label is located on the left outside of cabinet.
The label will be either Natural Gas or Propane.
The nominated gas is the gas that this appliance is designed to operate with.
DO NOT OPERATE WITH ANY OTHER GAS TYPE.
WARNING LABELS
Located on the side of the cabinet. PLEASE READ THESE LABELS CAREFULLY.
INSTALLATION LOCATION
THIS HEATER IS APPROVED FOR OUTDOOR INSTALLATION ONLY.
IT IS NOT SUITABLE FOR INDOOR USE.
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In addition, ensure that the appliance installation location permits easy access for maintenance and
operation.
MOUNTING THE APPLIANCE
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See the technical sheet (page 7) for dimensions of mounting brackets and positions.
The top bracket has a centre hole so that the appliance can be positioned by hanging it on one screw,
then other screws can be secured.
MODEL 16 20 26
Nominal hourly gas consumption by
proportional electronic gas control MJ/h 125 158 200
Test point pressure (NG) kPa 0.56 0.80 0.80
Test point pressure (Propane) kPa 0.91 1.40 1.50
Water heating capacity raised 40°C L/min 10 12.5 16.25
Minimum working pressure kPa 60 90 110
Maximum working pressure kPa 1200 1200 1200
Gas injectors diameter (NG) mm 0.95 / 1.45 0.95 / 1.45 1.15 / 1.65
Gas injectors diameter (Propane) mm 0.65 / 0.95 0.65 / 0.95 0.7 / 1.0
Input voltage single phase 50Hz V 240 240 240
Maximum output current A 0.39 0.45 0.46
Inlet gas connection male thread R3/4” (20mm) R3/4” (20mm) R3/4” (20mm)
Cold water connection male thread R3/4” (20mm) R3/4” (20mm) R3/4” (20mm)
Hot water connection male thread R3/4” (20mm) R3/4” (20mm) R3/4” (20mm)
Relief valve pressure setting kPa 1400 1400 1400
Weight dry kg 15 15 16
Dimensions (DxWxH) mm 200 x 350 x 520 200 x 350 x 520 200 x 350 x 520
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9INSTALLATION INSTRUCTIONS
COLD WATER CONNECTION
HOT WATER CONNECTION
COLD WATER SUPPLY TO WATER HEATER
Refer to the Technical Sheet for the position of connections.
Copper tube of a minimum size of R3/4" (20mm) should be connected to the appliance.
The water inlet connections are R3/4" (20mm) male BSP and requires a union to allow for removal of the
water heater.
Pipe sizing from the cold water supply should be sized according to local BY LAWS for water supply.
ISOLATING VALVE
A gate valve or ball valve must be used on the cold water inlet to the water heater.
THIS REQUIREMENT IS AN AUSTRALIA WIDE REQUIREMENT UNDER
THE NATIONAL PLUMBING CODE.
If the above instruction is not carried out, all warranties on the unit will be voided.
Stop taps or combination stop taps and non-return valves are not to be used.
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any time.
For an appliance intended to be permanently connected to the water mains and not connected by a
hose-set.
Refer to Technical Sheet for the position of connection.
The outlet connection is male thread R3/4" (20mm) and requires union connection to allow for removal of
the unit.
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Keep the pipe lengths to a minimum and make sure that the pipework is well insulated, as correct
performance of the appliance is dependent on properly insulated pipework.
DO NOT FIT ANY VALVES OR RESTRICTORS TO THE OUTLET
OF THE WATER HEATER.
DO NOT FIT ANY OBSTRUCTION TO THE PRESSURE RELIEF LOCATED
ON THE HOT WATER OUTLET CONNECTION.
After purging the air from the system using the hot water supply taps, remove the water inlet strainer located
on the cold water supply inlet connection.
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10 INSTALLATION INSTRUCTIONS
GAS CONNECTION
ELECTRICAL CONNECTION
Fit a union to the water heater gas inlet for easy connection and removal. The thread diameter is R3/4”
(20mm).
THIS DOES NOT INDICATE THE SIZE OF THE GAS SUPPLY refer to AS/NZS 5601 for guidance on pipe
sizing.
Fit an approved isolating gas valve in the supply line adjacent to the water heater gas connection.
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regulator of 4KG per hour capacity.
Before connecting the appliance to the gas service, purge any debris or air from the gas service. Venting of
purged gas shall be in an area free of sources of ignition.
Close the isolating gas valve prior to connection of the appliance.
After connection, check all joints for leaks with an approved leak tester.
Refer to AS/NZS 5601 Installation Code for pipe sizing details.
The Thermann 16/20/26 requires a minimum of 125/158/200 MJ/h respectively.
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must consider the gas input to this appliance as well as all the other gas appliances in the premises.
Service calls are chargeable for units installed with incorrect pipe sizes.
1. The appliance is equipped with a three pinned earthed plug to be connected to a 240V 50Hz power
supply. The electrical rating of the appliance is 0.39/0.45/0.46Amp. for the Thermann 16/20/26
respectively.
2. The appliance requires a 240V 50Hz weatherproof power outlet installed in a protected position adjacent
to the appliance.
3. IMPORTANT: The appliance should always be disconnected from the power supply before any
maintenance is carried out.
TESTING THE WATER HEATER AFTER INSTALLATION IS COMPLETED.
Turn on power supply to the heater and allow approximately 30 seconds for the computer to perform a
safety check. Open a hot water tap and check the temperature of the hot water supplied. The burners
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IF THE UNIT FAILS TO OPERATE, CONSULT THE FAULT MONITOR (LAST PAGE).
Danger
In the case that the water piping is accidentally connected to gas connection port, all parts of gas circuit
must be replaced.
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11INSTALLATION INSTRUCTIONS
IMPORTANT
DO NOT locate the remote controls (except bathroom remote controls) where they may come into
contact with water.
DO NOT position the remote controls in the vicinity of chemicals.
DO NOT position the remote controls over a cooker, grill oven or toaster.
DO NOT position the remote controls where materials may spill onto them.
REMOTE CONTROLLERS
1. NUMBER OF CONTROLLERS
One, two or three remote control panels can be installed as optional extras.
2. CONTROLLER LOCATIONS
The controllers allow the water temperature to be set from the various locations where they are installed at
kitchen, laundry, bathroom and ensuite.
(One Cable) (Two or more Cables)
CONTROLLER CABLE
CABLE CLAMP
CONTROLLER CABLE
CABLE CLAMP
(Small) (Medium or Large)
REMOTE CONTROLLER
CONNECTION TERMINALS
REMOTE CONTROLLER
CONNECTION TERMINALS
Conduit
3. CONNECTION OF WIRING TO THE THERMANN UNIT
Remove the front cover from the unit.
Install the wiring to the Thermann main unit using conduit or by concealing the wires in the wall cavity.
Install the wiring into the cabinet through the conduit.
Attach the wiring to the plate adjacent to the terminal block, using the cable clamp provided. Then attach the
wires to the terminals for the remote controls. Replace the front cover of the water heater.

12 INSTALLATION INSTRUCTIONS
REMOTE CONTROLLERS
4. INSTALLATION OF CONTROLLERS
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The heat will cause electrical component problems, or deform the exterior.
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ethylenic compound and acids etc are used.
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screws(2pcs) in the screw holes provided. Then attach face plate again.
Do not tighten the screws excessively, as the screw hole may be damaged.
Chemicals
Do Not

13INSTALLATION INSTRUCTIONS
REMOTE CONTROLLERS
Installation For Bathroom
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and feed spare cable back into wall.
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screws excessively, as the screw hole may be damaged. In case of mounting the remote controller on
tile, cement or mortar, use appropriate wall anchors. Then attach covers again.
*Seal the remote controller using suitable grade silicone. Failure to adequately seal with silicone may
result in water intrusion into the controller causing damage.
Remote controller
Remote controller
cables
*Silicone Teratment
(Only for bathroom)
Wall
Screw
Face Plate
Controller cable
Wall anchor
Remote controller cable

14 INSTALLATION INSTRUCTIONS
beep
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Before using, the following initial setting procedure is necessary for all remote controllers.
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``Lo´´ are indicated on the display.
Select ``Lo´´ or ``Hi´´ by pushing or button.
Hi(temp.) : Kitchen Controller
(Only ONE kitchen controller is available for one unit)
Lo(temp.) : Bathroom or Ensuite Controller(s)
After selecting ``Lo´´ or ``Hi´´, press ``ON/OFF´´ button for 5 seconds until a beep is heard.
``Fin´´ will appear on the display after the setting is completed.
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``40°C´´ on the display.
The remote controllers cannot be turned on until the initial setting of ALL connected remote controllers
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NOTE:
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ensuite) controllers, ``Hi´´ cannot be selected (only ``Lo´´ is displayed).
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temperature is displayed on each controller.
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simultaneously for 5 seconds. When the setting is cancelled, ``Lo´´ is indicated on the display.
Then perform the initial setting above again.
If Bathroom or Ensuite controller is set to ``Hi´´ by mistake, ``Hi´´ setting should be switched to ``Lo´´
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REMOTE CONTROLLERS

15INSTALLATION INSTRUCTIONS
6. COMMISSIONING AND TESTING
After completing the installation of the unit, turn the water, power and gas supplies on to the unit.
7. CONTROLS OPERATION
Turn the remote control in a kitchen ON by pressing the ON/OFF button on the control
to the ON position. The ON indicator will illuminate.
The digital monitor will indicate 40°C and the priority indicator will illuminate.
Using the or buttons select the hot water temperature required. Turn on the hot water supply tap.
The ``In Use´´ indicator will show that hot water is being supplied.
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procedure.
THERE ARE NO MINOR ADJUSTMENTS THAT CAN BE MADE TO THE UNIT.
CONFIRM IGNITION, COMBUSTION AND EXTINCTION
Check ignition, combustion and extinction of the unit by the ``In Use´´ indicator light of the controllers.
REMOTE CONTROLLERS

16 INSTALLATION INSTRUCTIONS
YST-2807
(Universal Controller)
This remote controller is intended to be used in the kitchen, laundry room, bathroom and ensuite.
REMOTE CONTROLLERS
ON Indicator
Indicates power is on to
the system.
UP/DOWN Button
Increase or decrease the
desired water temperature.
ON/OFF Button
Power switch to operate
this remote controller.
In Use Indicator
Indicates that a hot water
tap is open.
High Temp. Indicator
Indicates the setting
temperature is higher
than 50゜ C.
Digital Monitor
Indicates the selected water temperature.
Error messages flash in the event of failure.
PRIORITY Indicator
Indicates this controller has
priority control over by
controller.
PRIORITY Button
PRIORITY Button to set the
water temperature on this
remote controller.
The unit will deliver the selected temperature as follows:
Kitchen Controller:
37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49*, 50*, 55*, 60*, 65*, 70* and 75°C*
Bathroom Controller:
37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48°C
*Only for 60°C model

17INSTALLATION INSTRUCTIONS
CASCADE INSTALLATION (ONLY FOR 26L MODEL)
This type of installation allows two units to operate together by connecting two units with a 2-wire cable
and some simple programming.
The units will operate in a range between 25 MJ/h and 400 MJ/h when two units are connected together.
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both units.
Thermann genuine cascade cable can be used to connected the two units.
The distance between the two units must be in the range of 5 -100 cm.
Water and gas pipe length should be the same to both units. Otherwise the temperature of the hot water
at the tap can be unstable.
In case of connecting the remote control, it must be connected with the MASTER of the two units.
Otherwise the remote control will not operate correctly.
Remote
Controller
Remote Controller
Connection Terminals
Thermann genuine
cascade cable
Gas Supply
Hot Water Supply Line
Cold Water Supply Line
PCB
(5-100cm)
the MASTER unit the SLAVE unit
PCB

18 INSTALLATION INSTRUCTIONS
CASCADE SET UP
Do not supply power to either unit until steps 1-4 below are completed.
1. Connect pipes for gas, cold water and hot water.
2. Hook up the interconnect cable to the remote control terminal of each unit.
3. Set the Dip Switch 2 on the PCB of each unit per drawing and as sign the MASTER unit and the SLAVE
unit.
ON
the MASTER unit
OFF
OFF
the SLAVE unit
ON
Dip Switch 1
Dip Switch 2
ON
576142
12
83
OFF
ONOFF
Ccombustion Indicator
4. In case of connecting the remote control, all remote controls with the MASTER unit.
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the units are set up and connected properly. Now energize the MASTER unit.
6. If set up mistake, the following will occur.
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breaks or blinks irregularly.
- No indication or 735 error code is displayed on the remote control digital monitor or it cannot be set the
steps of ``5.INITIAL SETTING CONTROLLERS (page 14)´´.
In that case, pull out the power plug of both two units and wait for over three minutes. Then check
the connecting cable between the MASTER unit and the SLAVE unit, the Dip Switch 2 setting on the
MASTER unit and the SLAVE unit. After the check, plug in the units and repeat the step 5.
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and any indication might not be displayed.
CASCADE INSTALLATION (ONLY FOR 26L MODEL)
In case that three remote controllers are connected, two (small and large) cable clamps shall be used.
CONTROLLER CABLE
CABLE CLAMP (Small)
REMOTE CONTROLLER
CONNECTION TERMINALS
CABLE CLAMP (Large)
CASCADE CABLE
(Maximum Four Cables)

19INSTALLATION INSTRUCTIONS
KITCHEN
CONTROL
240volt POWER SUPPLY
BATHROOM
CONTROL
ENSUITE
CONTROL
GAS VALVE
GAS VALVE 3
GAS VALVE 2
GAS VALVE 1
GAS VALVE
THERMAL FUSE
TEMPERATURE SENSOR
WATER FLOW CONTROL VALVE
TEMPERATURE SENSOR
TEMPERATURE SENSOR
FLAME ROD
WATER FLOW SENSOR
THERMOSTAT
IGNITOR
FAN MOTOR
(CONTROL)
(OVER HEAT)
Y
Y
Y
Y
(MAIN)
Y
YYDIP SWITCH 1
DIP SWITCH 2
ON
57
6142
12
83
OFF
ONOFF
ANTI-FROST HEATERS
AC240V
PCB
PCB
MODEL NAME PCB NO.
FUSE
(250V T5A)
2
3
4
6
1
Y
Y
REMOTE
CONTROLLER
BL
G
O
Y
BK
BKBK
BK
(AMBIENT TEMP.)
BL BK
P
WO
G
RY
W
WW
BL
BL
W
W
WW
(OUTGOING TEMP.)
(INCOMING TEMP.)
BK
GR
GR
R
W
BK
BK
R
Y
W
BL
GAS VOLUME ADJUSTING BUTTON(DOWN)
GAS VOLUME ADJUSTING BUTTON (UP)
COMBUSTION INDICATOR
BK
BK
: White
: Black
: Brown
: Blue
: Grey
: Light Blue
: Orange
: Red
: Green
: Purple
: Yellow
10
89
W
BK
BR
BL
GR
LB
O
R
G
P
Y
ONLY FOR 26NG50-6/26LP50-6
26NG60-6/26LP60-6
ONLY FOR 26NG50-6/26LP50-6
26NG60-6/26LP60-6
16NG50-6/16LP50-6
16NG60-6/16LP60-6 GC-153
20NG50-6/20LP50-6
20NG60-6/20LP60-6
GC-162
26NG50-6/26LP50-6
26NG60-6/26LP60-6
5
W
W
G
LB
BR
G/Y
WIRING DIAGRAM AND REMOTE CONTROLS
INSTALLATION SCHEMATIC
WIRING FROM MAIN UNIT
TO KITCHEN & BATHROOM/
ENSUITE REMOTE
CONTROLS

20 INSTALLATION INSTRUCTIONS
FAULT MONITOR
When installed with remote controllers the THERMANN HOT WATER UNIT HAS A SELF DIAGNOSING
FUNCTION FOR FAULTS.
When the unit does not operate correctly an error code is displayed on the remote control TEMPERATURE
DISPLAY INDICATOR.
The cause of the fault can be determined after checking the fault numbers display on the remote control
display.
DISPLAY PROBLEM REMEDY
111 GAS BURNER FAILS TO IGNITE CHECK GAS SUPPLY
121 LOSS OF COMBUSTION CHECK GAS SUPPLY AND PRESSURE
141 RESIDUAL FLAME SAFETY DEVICE CALL REECE CUSTOMER CARE
1800 080 055
311, 321, 341 THERMISTOR WIRE BREAKAGE CALL REECE CUSTOMER CARE
1800 080 055
510, 511 GAS VALVE FAILURE CALL REECE CUSTOMER CARE
1800 080 055
611 COMBUSTION FAN FAILURE CALL REECE CUSTOMER CARE
1800 080 055
651 WATER FLOW CONTROL VALVE FAILURE CALL REECE CUSTOMER CARE
1800 080 055
700, 731 PCB FAILURE CALL REECE CUSTOMER CARE
1800 080 055
721 FALSE FLAME DETECTION CALL REECE CUSTOMER CARE
1800 080 055
735 CASCADE COMMUNICATION FAILURE CALL REECE CUSTOMER CARE
1800 080 055
740, 750, 760 COMMUNICATION FAILURE BETWEEN
REMOTE CONTROLS AND PCB
TURN OFF POWER AND TURN ON
AGAIN