Takagi GS-20W-AU5 User manual
INSTALLATION GUIDE and
OWNER’S GUIDE
GAS WATER HEATERS
GS-20W-AU5/6
GS-26W-AU5/6
EXTERNAL INSTALLATION ONLY
WARNING
• DO NOT SPRAY AEROSOLS IN THE VICINITY OF THIS APPLIANCE WHILE IT IS IN
OPERATION.
• DO NOT USE OR STORE FLAMMABLE MATERIALS IN OR NEAR THIS
APPLIANCE.
• DO NOT PLACE ARTICLES ON OR AGAINST THIS APPLIANCE.
• DO NOT MODIFY THIS APPLIANCE.
2
Before you install the hot water system, please
be sure to read through the Installation guide and
Owner’s guide, which provides the description of
the hot water system, its functions and how to
install it correctly. To avoid the risks that are always
present when you install an appliance, it is import-
ant that the hot water system is installed correctly
and that you read the safety instructions carefully
to avoid misuse and hazards.
After unpacking the hot water system please check
it is not damaged. If in doubt, do not use the hot
water system but contact your local Customer Care
Centre using the number located at the back of this
installation guide.
NOTE: The actual gas heating appliance that is part
of this gas continuous flow hot water system will
here after be referred to as “water heater” for the
purposes of this Guide. The gas continuous flow
hot water system as a whole may also be referred
to as “hot water system” for simplicity.
Meanings of symbols used in this manual are shown
below:
Danger: Indicates an imminently hazard-
ous situation which, if not avoided, will result in
death or serious injury.
Warning: Indicates an imminently hazard-
ous situation which, if not avoided, could result
in death or serious injury.
Indicates an imminently hazard-
ous situation which, if not avoided, could result
in minor or moderate injury.
Indicates information considered im-
portant but not hazard related.
This Installation Guide and Owner’s Guide has been prepared for Installers and service of the equipment
and users. Please keep it in a safe place for future reference.
FOR THE INSTALLER
The installation must be done in accordance with the information supplied in this Guide. All other relevant
National, State or Local regulations must also be conformed with and these include (but are not limited to):
1. IMPORTANT
•
•
• -
•
• -
•
CONTENTS
1.IMPORTANT...............................................2
FOR THE INSTALLER ......................................2
FOR SERVICE .................................................3
FOR THE PLUMBER .......................................3
2.SPECIFICATIONS .........................................3
.........................................4
.............................................5
...5
...................................6
7.INSTALLATION............................................7
CONFIRM THE APPLIANCE SUITABILITY ........7
SELECTING INSTALLATION LOCATION............8
CLEARANCES FOR OUTDOOR
HEATER LOCATIONS – AS5601 ......................9
8.GAS CONNECTION....................................10
SIZING AND CONNECTING ...........................10
MEASURING INLET GAS PRESSURE
AND TESTING GAS LEAKAGE........................11
9.WATER CONNECTIONS .............................12
........................13
11.REMOTE CONTROLLER (OPTIONAL ITEM).14
REMOTE CONTROLLER INSTALLATION .........15
CONNECTION OF REMOTE CONTROLLER
WIRING TO THE WATER HEATER ..................16
12.INITIAL OPERATION .................................17
..............................18
WITHOUT REMOTE CONTROLLER................18
WITH ONLY MAIN
REMOTE CONTROLLER.................................19
WITH MULTIPLE REMOTE CONTROLLERS ....19
................................20
WINTER SHUT DOWN ..................................20
...................21
UNIT DRAINING and FILTER CLEANING........21
.................22
17.PCB ERROR CODE.....................................24
18.WIRING DIAGRAM ...................................25
19.DIP SWITCH SETTINGS .............................25
.................................26
21.WATER FLOW AND
WATER TEMPERATURE .............................28
22.WARRANTY CONDITIONS.........................28
3
FOR SERVICE
Maintenance and fault-finding must be done in accordance with these instructions and the appli-
cable regulations listed on the previous page.
FOR THE PLUMBER
NOTE: GS-20W/26W-AU5 is supplied factory set at 50 °C outlet hot water temperature to comply
with the requirements of .If the water heater is not preset to 50 °C, tempering valve
is required.
GS-20W/26W-AU6 is supplied factory set at 60 °C.
1. When connecting the hot water supply to the
fixtures in the property a minimum of 1.4
metres of pipework must be used between the
outlet of the water heater and the first tap and
outlet. See Diagram to the right.
2. The Hot water line should be insulated with
Ensolex or similar pipe insulation.
3. When the installation is completed the tem-
perature is to be tested at the taps to confirm
the water temperature does not exceed the
required 50°C setting.
•
or outlet is required
to be a minimum of
1.4 metres from the
the water heater.
• Pipe size is nominal 18
mm from hot water
or outlet.
First tap or outlet
2. SPECIFICATIONS
MODEL
Gas Type Nat. Gas LPG ULPG Nat. Gas LPG ULPG
Gas Input (MJ/h) 160 195
Inlet Pressure
(kPa)
1.13 min./
5.0 max.
2.75 min./
7.0 max.
2.75 min./
7.0 max.
1.13 min./
5.0 max.
2.75 min./
7.0 max.
2.75 min./
7.0 max.
Water Supply
Pressure kPa
150* min.
1200 max.
Height mm 515
Depth mm 170
Width mm 350
Weight kg 15.0 16.0
20 BSP
20 BSP
Electronic
Electrical Supply V 240 AC
NOTES:
*The appliance will operate at reduced performance below 340 kPa.
• For information relating to burner test point pressures and injector sizes, refer to the rating plate located on the
right hand side of the cabinet for each model. (Please refer to p. 7.)
• For information relating to overall dimensions and connection points, refer to the diagrams on p.5.
• Before installing in areas over 1500 m above sea level, contact the manufacturer for instructions.
WARNING
-
4
INTRODUCTION
•
the water heater.
•
casing of the water heater. (Please refer to p. 7.)
•
• -
less hot water for your needs.
• The principle behind the water heater is simple:
Burner
H e a t e x c h a n g e r
E x h a u s t
F l o w s e n s o r
T h e r m i s t o r
Computer
board
A C 2 4 0 V
G a s v a l v e
Fan
C o l d w a t e r i n l e t
G a s
H o t w a t e r o u t l e t
*This diagram illustrates the main components only and does not
1. A hot water tap is turned on.
2. Water enters the heater.
3.
4.
5. Water circulates through the heat exchanger and it gets heated.
6.
amount of hot water at the set temperature.
7.
5
ACCESSORIES
DIMENSIONS AND CONNECTION POINTS
350
339
228
5323
490
515
45 GAS
GAS
117
84
133
52 COLD
44 HOT
HOT COLD
HOT
GAS
60
124
332
95
30
COLD
170 15.7
544
GS-26W-AU5/6
GS-20W-AU5/6
(Unit: mm)
6
SAFETY GUIDELINES
WARNING
•
•
-
• DO NOT install the water
heater indoors.
• -
1. Carefully plan where you intend to install the Water Heater. Please ensure:
•
• Locate the water heater where water leakage will not damage surrounding areas.
2.
.
*If this unit does not match your requirements, MANUFAC
TURER.
3. If any problem should occur, turn off all hot water taps and turn off the gas. Then call a
trained technician or the Gas Company or the manufacturer.
WARNING
• Water temperatures above 50 °C can cause severe burns or death from scalding.
Children, the disabled and the elderly are at a high risk of being injured. Feel the
water temperature before bathing or showering. Do not leave children, disabled
persons, or the elderly unsupervised. The Australian Standards AS 3498 gives
outlets (bathrooms) and is required to be conformed to under all plumbing codes
within Australia.
•
the vicinity of this appliance.
•
gas valves and can cause severe injury or death. Follow the diagram on p.
10 and 12 when installing your water heater.
• Do not use this appliance if any part has been in contact with or been
immersed in water. Immediately call a licensed plumber, a licensed gas
if necessary.
• Do not disconnect the electrical supply if the ambient temperature will
unit has electrical power. The warranty will not be covered if the heat
7
7. INSTALLATION
This manual must be followed exactly. Read the “SAFETY GUIDELINES” (p.6) and the “IMPORTANT”
CONFIRM THE APPLIANCE SUITABILITY
met.
Gas Type Label
CAUTION
•
•
•
• -
pendent upon the quality of water supplied to this system.
•
• The manifold pressure is preset at the factory. It is computer controlled and should not
need adjustment.
•
services.
• The installer must follow the electrical earthing procedure outlined in AS3500.4 before cut-
•
•
8
SELECTING AN INSTALLATION LOCATION
CAREFULLY READ THIS SECTION BEFORE INSTALLING THE WATER HEATER. WHEN A
FOLLOWED EXACTLY.
CAUTION
• -
pendent upon the quality of water supplied to this system.
• Although the water heater is designed to operate with minimal sound, you
should not install the unit on a wall adjacent to a bedroom, or a room that is
intended for quiet study or meditation, etc.
• Locate your heater close to a drain where leakage WILL NOT DAMAGE SURROUND
ING AREAS.
WARNING
• Every care is taken to warn THE PUBLIC AND THE OCCUPANTS OF THE BUILDING OF
ANY RISK OF INJURY that may occur from falling tools, open trenches, water connec-
•
•
• Locate unit for easy access and maintain proper space for service and maintenance.
Install the unit so that it can be connected or removed easily.
•
• -
mulate.
• Check the proximity of gas & electrical lines so as not to create a hazard and avoid access prob-
lems for other services.
•
clearances from eaves, windows, vents etc. – see the diagram on p. 9.
•
• Most load bearing walls such as brick, brick/veneer, weatherboard and stud-frames are
suitable locations.
• -
9
Below eaves, balconies and other projecons:
・Appliances up to 50MJ/h input
・ Appliances over 50MJ/h input
From the ground, above a balcony or other surface*
From a return wall or external corner*
From a gas meter (M) (see 5.11.5.9 for vent terminal locaon of regulator)
From an electricity meter or fuse box (P)
From a drain or soil pipe
Horizontally from any building structure* or obstrucon facing a terminal
From any other flue terminal, cowl or combuson air intake*
Horizontally from an openable window, door, non-mechanical air inlet, or any other opening
into a building with the excepon of sub-floor venlaon:
・Appliances up to 150 MJ/h input
・Appliances over 150 MJ/h input up to 200 MJ/h input
・Appliances over 200 MJ/h input
・All fan-assisted flue appliances in the direcon of discharge
Openable
window
From a mechanical air inlet, including a spa blower
Vercally below an openable window, non-mechanical air inlet, or any other opening into a building
with the excepon of sub-floor venlaon:-
・Space heaters up to 50 MJ/h input
・Other appliances up to 50 MJ/h input
・Appliances over 50 MJ/h input up to 150 MJ/h input
・Appliances over 150 MJ/h input
Ref. Item
Minimum clearances
(mm)
Natural
dra Fan
assisted
300
500
300
500
1000
500
150
500
500
200
300
300
300
1000
500
75
500
300
500
1500
1500
300
500
1500
1500
1000
1500
150
500
1000
1500
150
500
1000
1500
f
c
n
j
jj
k
k
h
h
h
ee
d
d
b
c
a
g
See note 3
T
T
T
g
See note 2
I
Door
P
M
a
b
c
d
e
f
g
h
j
k
n
T = Flue terminal
I = Mechanical air inlet
M = Gas meter
P = Electricity meter or fuse box Shading indicates prohibited
areas for flue terminals
*- unless appliance is cerfied for closer installaon.
Note:
1 All distances are measured to the nearest part of the terminal.
2 Prohibited area below electricity meter or fuse box extends to ground level.
3 See Clause 5.13.6.6 for restricons on a flue terminal under a covered area.
4 See Appendix J, Figures J2(a) and J3(a), for clearances required from a flue terminal to an LP gas cylinder.
A flue terminal is considered to be a source of ignion.
5 For appliances which are not menoned above, comply with local regulaon.
Exemption from prescribed statutory requirements referred to in Figure 1 has been granted to
allow multiple series of the Water Heaters to be positioned side by side.
10
Power cord
Gas supply inlet
Gas valve
8. GAS CONNECTIONS
CAUTION
1.
heater and manual gas valve located on
the outside of the unit before beginning
2.
not connect water line to gas inlet. It may
SIZING AND CONNECTING
Check the gas type label to make sure that the water heater is available for your gas, and that the
gas inlet pressure is within the appropriate range. (Please refer to p. 3.)
1.
2. Inlet gas pressure must not exceed the above maximum values; gas pressure above the speci-
3.
heater is disconnected to avoid any damage to the water heater.
•
• Always use approved connectors to connect the unit to the gas line. Always purge the
•
• The manifold pressure is preset at the factory. It is computer controlled and is not to be
• When the gas connections are completed, it is necessary to perform a gas leak
test either by applying soapy water to all gas fittings and observing for bubbles or
by using a gas leak detection device.
WARNING
Conversion of this unit from natural gas to propane or propane to natural gas cannot be
done in the field. Contact your local retailer or distributor to get the correct unit for your
gas type.
11
WARNING
Measuring inlet gas pressure and testing gas leakage are
WARNING
-
piping system at test pressures above 3 kPa.
MEASURING INLET GAS PRESSURE AND TESTING GAS LEAKAGE
The appliance and its gas connections must be tested for leak and the inlet gas pressure must
be measured before placing the unit in operation for properly performing and safety.
1.
2. Open a faucet. The unit should turn on and the gas in the gas pipe line should purge. Leave the
3. Remove the screw for the pressure port located on the gas inlet of the water heater shown in
the diagram below.
4. Connect the manometer to the pressure port.
5. Re-open the manual gas valve. Check to see that there are no gas leaks with a gas leak detec-
to r.
6.
7. Check the inlet gas pressure. When the water heater is on a maximum burn, the inlet gas pres-
sure must be within the appropriate range. (Please refer to p. 3.)
12
9. WATER CONNECTIONS
Drain plug
Filter
Hot water
outlet
Cold water
inlet Gate or ball
valve on inlet
WARNING
Do not reverse the hot outlet and cold
Heater as this will cause your heater to
operate improperly.
•
suitable for potable water systems.
•
the main water supply line and the water heater.
• Only a gate valve or a ball valve is to be used on the cold water supply.
• No stop taps or check valves are to be used as this will void the warranty and damage the wa-
ter heater.
•
• -
heater.
•
COUNTERCLOCKWISE
AND THEN CLEAN AND
REPLACE
1. TURN OFF THE WATER
INLET SUPPLY VALVE.
2. OPEN A HOT WATER
TAP TO RELEASE THE
LINE PRESSURE.
Filter
13
ELECTRICAL CONNECTION
1. The water heater must be electrically grounded. Do not
2. The water heater requires an AC 240V 50Hz electrical power
supply and draws a current of 0.8A.
3. The weather-proof power point should be no more than 1
metre from the base of the water heater for easy access.
4.
necessary.
5. If the cord supplied with this appliance must be replaced, it
must be replaced with appliance wiring material supplied by
the Manufacturer.
WARNING
When servicing or replacing parts within the water heater, label all wires prior to discon-
14
11. REMOTE CONTROLLER (OPTIONAL ITEM)
The water heater can be installed with up to three remote controllers. The remote controller
• The output water temperature can be adjusted only by a remote controller which has the
heater. (Default set temperature is 40 °C.)
•
-
• must be installed in dry, shaded and clean locations (such as kitch-
en) due to NO water resistant. Be careful of installation location.
• The controller can adjust the output water temperature within the range from 37 °C to 50 °C
when it is connected to GS-20W/26W-AU5. (See the chart below.)
• The controller can adjust the output water temperature with in the range from 37 °C to 60 °C
when it is connected to GS-20W/26W-AU6. (See the chart below.) When “BURNER ON” lamp
is on, the set temperature can not be adjusted to 55 and 60 °C. If you want to set it to 55
and 60 °C, you should close the hot water tap.
• and controllers are water resistant, however should not be posi-
of the wall and the controller.
• is installed such as the main bathroom, and is installed such as the
ensuite bath room.
• The controllers can adjust the output water temperature within the range from 37 °C to 50 °C.
(See the chart below.)
• When BURNER ON lamp is on, the set temperature can not be adjusted to 42 °C or over. If you
want to adjust the set temperature to 42 °C or over , you should close the hot water tap.
Main Shower Ensuite
*Factory setting (Default): 40 °C
**Setting of the output temperature of 55 °C and 60 °C are only available when it is connected to GS-20W/26W-AU6.
37 38 39 40* 41 42 43 44 45 46 47 50 55** 60**
37 38 39 40* 41 42 43 44 45 46 47 50
(Unit:°C)
15
WARNING
• DO NOT locate the remote controllers where they may come into contact with water.
•
•
•
• -
SULATION PLATE SHOULD BE PROVIDED BEHIND THE MOUNTING POSITION.
REMOTE CONTROLLER INSTALLATION
1. Crimp the fork terminals provided to the wires.
• Minimum 18AWG wire (No polarity)
• Maximum 100m long
2.
controller.
3. Install the wiring downward through the cable trench and
4.
Use the fork terminals
25 mm
45 mm
REMOTE CONTROL WIRING
Connector base
83.5 mm
16
CONNECTION OF REMOTE CONTROLLER WIRING TO THE WATER HEATER
1.
2. Remove the front cover from the water heater. There are 3 screws on the front cover.
3.
4. Connect the remote control wires to the remote terminals directly. (There is no polarity in the
5. Replace the front cover. Then connect the power plug.
Remote control wires
Remote control terminals
Put the remote control wires
the unit’s casing.
TYPICAL CABLE LAYOUT
17
WARNING:
• for leaks before supplying power to the water heater.
• Open the main gas supply valve to the unit using only your hand to avoid any spark. Never use
•
• Refer to p. 11.
•
• to the heater.
• to remove any air pocket.
• -
WARNING: IF YOU SMELL GAS:
• Do not try to start the water heater.
• Do not touch any electric switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbour’s phone. Follow the gas sup-
plier’s instructions.
• If you cannot reach your gas supplier,
12. INITIAL OPERATION
1.Once the above checks have
been completed, please clean
2.Fully open the manual water
control valve on the water sup-
ply line.
. Open a hot water tap to
that tap.
Then close the hot water tap.
.Fully open the manual gas
control valve installed and turn
on the 240 volt 50Hz power
supply to the water heater.
.Set the water temperature at
or the remote controller (if it is
installed) and open a hot water
temperature at the tap does not
exceed 50 °C.
.Now you are ready to enjoy
hours of endless hot water.
This initial operation must be performed by a qualified installer (for example, a licensed plumber or gas fitter).
18
NORMAL OPERATION
•
• Flow rate to keep the water heater running : 1.8 LITRES per minute
WITHOUT REMOTE CONTROLLER
1.Open a cold water tap. 2.Mix hot water with the cold
water to get the suitable temper-
ature water.
.Close the water taps.
NOTE: The water temperature is set at from the factory*. If you want to change the set
temperature of hot water without remote controller, refer to diagram below.
WARNING
• Water temperatures above 50 °C can cause severe burns or death from scalding.
Children, the disabled and the elderly are at a high risk of being injured. Feel the
water temperature before bathing or showering. Do not leave children, disabled
persons, or the elderly unsupervised. The Australian Standards AS 3498 gives full
-
lets (bathrooms) and is required to be conformed to under all plumbing codes
within Australia.
• -
40°C
60°C MODEL
DEFAULT
60°C
45°C
55°C
Temperature settings
50°C MODEL
DEFAULT
50°C
OFF
ON
TMP1
TMP2
TMP3
876
TMP1
TMP2
TMP3
OFF
ON
876
TMP1
TMP2
TMP3
OFF
ON
876
TMP1
TMP2
TMP3
OFF
ON
876
TMP1
TMP2
TMP3
OFF
ON
876
WARNING
• -
• Only change the switches with dark squares.
• DO NOT adjust other switches.
•
*NOTE:
19
WITH ONLY MAIN REMOTE CONTROLLER INSTALLED
1.
lamp is ON and the set temperature is displayed on the
remote controller.
2. Adjust the set temperature. can change
the output temperature of hot water from 37 °C to
50°C when it is connected to GS-20W/26W-AU5 and 37
°C to 60°C when it is connected to GS-20W/26W-AU6.
(Please refer to P. 14.)
3. Open a cold water tap and mix hot water with the cold
water to get suitable temperature water. Ensure the
BURNER ON lamp is ON.
4. Close the hot water tap and cold water tap, and ensure
the BURNER ON lamp is OFF.
Priority
buon
ON/OFF
Set temperature
display
Set temperature
adjust buon
Burner on
lamp
lamp
Priority
buon
WITH MULTIPLE REMOTE CONTROLLERS INSTALLED
Priority
buon
ON/OFF
Set temperature
display
Set temperature
adjust buon
Burner on
lamp
lamp
Priority
buon
Priority
buon
ON/OFF
Set temperature
display
Set temperature
adjust buon
Burner on
lamp
lamp
Priority
buon
1.
ensure the PRIORITY lamp of the remote controller is
on and the set temperature is displayed on each remote
controller.
2. Adjust the set temperature. The set temperature can
only be changed by the remote controller with the
PRIORITY lamp on. If you want to adjust the set temper-
ature with other remote controller, press the PRIORITY
water temperature of each remote controller, see the
NOTE: Each remote controller can individually store
the set temperature. However –
reason when it is installed with GS-20W/26W-AU6.
If the set temperature was 43 °C and above at previous
safety reason.
3. Open a cold water tap and mix hot water with the cold
water to get suitable temperature water. Ensure the
BURNER ON lamp is ON.
4. Close the hot water tap and cold water tap, and ensure
the BURNER ON lamp is OFF.
20
FREEZE PREVENTION
This unit comes equipped with heaters that prevent the unit from freezing. For this freeze
devices will not work if the electrical power source is disconnected. The unit has been rated for
temperatures down to -15 °C in a wind free environment. Do not install the water heater in an
area with extremely cold weather.
CAUTION
The pipe heaters are located on the Water Heater only. Any hot or cold water pipes
located outside of the unit will not be protected. Properly protect and insulate these
pipes from freezing.
WINTER SHUTDOWN
your unit from freezing and being damaged.
Gas
Cold
Hot
Drain
plug Power
supply
Manual
water valve
Manual
gas valve
1.
2.
3.
the water supply line.
4. Open all hot water taps in the house. (Bathroom,
has ceased, close all hot water taps.
5. Have a bucket or pan to catch the water from the
unit’s drain plugs. the drain plugs to
drain all the water out of the unit.
6. Wait a few minutes to ensure all water has com-
pletely drained from unit.
7. Securely screw the drain plugs back into place.
•
• Purge the water line of debris.
• Turn on the manual water control valve located on the water supply line.
•
• Turn on the manual gas control valve located on the gas supply line.
• Turn on the power supply to the Water Heater.
This manual suits for next models
3
Table of contents
Other Takagi Water Heater manuals
Takagi
Takagi T-K2 User manual
Takagi
Takagi T?H2?DV User manual
Takagi
Takagi T-H3J-DV User manual
Takagi
Takagi T-KJr2U-IN User manual
Takagi
Takagi T-KJr2U-IN-N User manual
Takagi
Takagi Flash Water Heater T-KD20 User manual
Takagi
Takagi T-K2 User manual
Takagi
Takagi T-M50 User manual
Takagi
Takagi T-H3M-OS User manual
Takagi
Takagi Flash Water Heater T-KD20 User manual
Takagi
Takagi AT-M50 User manual
Takagi
Takagi T?KJr2?IN User manual
Takagi
Takagi T-KJr2U-IN User manual
Takagi
Takagi 110c User manual
Takagi
Takagi T-KJr2-IN / 110 User manual
Takagi
Takagi AT-KJr3U-IN User manual
Takagi
Takagi T-KJr User manual
Takagi
Takagi T-KJr2U-IN User manual
Takagi
Takagi T?H2?DV User manual
Takagi
Takagi T-KJr2U-IN User manual
Popular Water Heater manuals by other brands
Rubine
Rubine SSE SERIES Operation manual
Rheem
Rheem Solar Premier Loline Owner's guide and installation instructions
Amtrol
Amtrol PREMIER SERIES Application guide
TESY
TESY 2x4/2x9 S2 200 Instructions for use and maintenance
WIKORA
WIKORA WBO 506 UNO Installation manual operating instructions
Rheem
Rheem GG Series use and care manual
Kospel
Kospel MAXIMUS electronic Series manual
State Water Heaters
State Water Heaters SCE 80-115 Installation, user and service manual
STIEBEL ELTRON
STIEBEL ELTRON SBP 1000 E Operation and installation
Waterware
Waterware Protank Series owner's manual
OSO HOTWATER
OSO HOTWATER Wally-W Series installation manual
Raypak
Raypak Raytherm - Type WH 926-1758 Specifications
Bock Water heaters
Bock Water heaters PowerGas 32PG Specification sheet
Hamilton Engineering
Hamilton Engineering EVO Plus Series Installing, operating & maintaining
Vaillant
Vaillant allSTOR plus VPS 800/4-5 Installation and maintenance instructions
Rheem
Rheem Raypak Delta Limited 399B Installation and operation manual
Hamworthy
Hamworthy DORCHESTER DR35L Installation, commissioning and maintenance instructions
Bosch
Bosch 125B LP Installation and operating instructions