Panasonic PAW-TD23B6E5 User manual

145969-00 - 01-2020
PAW-TD23B6E5
230+60 l.
EU
SAFETY INFORMATION
INSTALLATION MANUAL
OPERATING INSTRUCTIONS
TDS - TECHNICAL DATA SHEET
Languages in manual:
EN - English
BG - Bulgarian
CS - Czech
DA - Danish
DE - German
EE - Estonian
ES - Spanish
FI - Finnish
FR - French
GR - Greek
HR - Croatian
HU - Hungary
IT - Italian
LV - Latvian
NL - Dutch
NO - Norwegian
PL - Polish
PT - Portugese
RO - Romanian
SK - Slovenian
SV - Swedish
TR - Turkish

2
CONTENTS
1. Safety instructions............................................... 3
1.1 General information..................................... 3
1.2 Safety instructions for users ..................... 4
1.3 Safety instructions for installers.............. 4
2. Product description............................................. 5
2.1. Product identification.................................. 5
2.2. Intended use.................................................. 5
2.3 CE marking ..................................................... 5
2.4 Technical data ................................................ 5
2.5. ErP data (TDS)................................................. 5
3. Installation instructions .................................... 6
3.1. Products covered by these instructions 6
3.2. Included in delivery...................................... 6
3.3. Product dimensions..................................... 6
3.4. Requirements for installation location 7
3.5. Pipe installation............................................. 8
3.6. Electrical installation.................................. 10
4. Maintenance and draining............................... 12
4.1. Checking the manometer........................ 12
4.2. Checking the safety valve........................ 12
4.3. Checking the protective anode............. 12
4.4 Draining the product....................................12
5. Spare parts............................................................. 13
5.1. Spare parts list ............................................. 13
6. Warranty conditions......................................... 14
6.1. Warranty conditions .................................. 14
7. Recycling and handover.................................. 15
7.1 Disposal ............................................................ 15
7.2 Handover to end-user..................................15
7.3 Installer/electrician contact information ....15
Dear customer
PAW-TD23B6E5 is a high-grade stainless steel
tank-in-tank unit with high performance and
very low heat losses, intended to supply the
household with domestic hot water and heat-
ing to radiators / underfloor heating.
The unit is insulated with 50 mm. of 4th gen.
PUR insulation material, reducing heat losses
to a minimum. The 230L domestic hot water
tank with a built-in large heating coil will sup-
ply sufficient hot water for a normal household,
while the 60L buffer tank reduces the number of
start and stop sequences for the air/water heat
pump. This increases the heat pump lifespan,
energy efficiency and provides greater comfort.
The tank-in-tank technology also reduces the
total footprint of the system.

3
1. SAFETY INSTRUCTIONS
1.1 General information
• Read the following safety instructions
carefully before installing, maintaining or
adjusting the water heater.
• Personal injury or material damage may
result if the product is not installed or
used in the intended manner.
• Keep this manual and other relevant doc-
uments where they are accessible for fu-
ture reference.
• The manufacturer assumes compliance
(by the end-user) with the safety, oper-
ating and maintenance instructions sup-
plied and (by the installer) with the fitting
manual and relevant standards and regu-
lations in effect at the date of installation.
Symbols used in this manual:
!
WARNING Could cause serious injury or death
!
CAUTION Could cause minor or moderate injury or damage to property
DO NOT
!
DO
!
This document should be kept in a suitable place where it is accessible for future reference.
!
!
CAUTION
Incorrect repairs may lead to danger for users. Only trained and qualified technicians are author-
ised to install, move, modify or repair this product.
The warranty does not apply if the applicable regulations are not complied with.
The tank must not be stored outdoors before installation.
Always wear gloves during installation or repair. Touching the pipes may lead to hot or cold burns.

4
1.3 Safety instructions for installers
!
WARNING
The overflow from the Temperature & Pressure relief valve must NOT be sealed or plugged.
!
Any overflow pipe from the safety valve must be installed uninterruptable and frost-free
with a fall to the drain/gully.
!
The electrical wiring diagram in this manual must be followed. No optional wiring is al-
lowed. All work on electrical systems must be performed by an authorized installer.
!
The mains cable should withstand 90°C. A strain reliever must be fitted.
!
The product must be filled with water before the power is switched on.
!
The relevant regulations and standards, and this installation manual, must be followed.
!
For the buffer tank - a closed pressurized system of installation - it is obligatory to install
a safety valve with a rated pressure of max. 0.3 MPa (3 bar), which prevents the elevation
of pressure in the buffer tank by more than 0.1 MPa (1 bar) above the rated pressure. This
safety valve must be supplied and installed separately, and is not part of this product. To
ensure proper functioning of the safety valve, annual control to remove any blockage of
the outlet shall be performed.
1.2 Safety instructions for users
!
WARNING
The overflow from the Temperature & Pressure relief valve must NOT be sealed or plugged.
The product must NOT be covered. Do NOT place foreign objects near or on the product.
The product must NOT be modified or changed from its original state.
Children must NOT play with the product or go near it without supervision.
!
The product should be filled with water before the power is switched on.
!
Maintenance/settings should only be carried out by persons over 18 years of age, with
sufficient understanding.
!
CAUTION
The product must not be exposed to frost, over-pressure, over-voltage or chlorine treat-
ment. See warranty conditions.
Maintenance/settings should not be carried out by persons of diminished physical or
mental capacity, unless they have been instructed in the correct use by someone respon-
sible for their safety.
!
CAUTION
!
The product should be placed in a room with a drain.
!
The product should be properly aligned vertically and horizontally, on a floor surface
suitable for the total weight of the product when in operation. See table 2.4.
!
The product must have a service clearance of 120 cm in front of the cover / 50 cm on top.

5
2.4 Technical data
2.5 ErP data - Technical Data Sheet
2. PRODUCT DESCRIPTION
2.1 Product identification
Identification details can be found on the type
plate fixed to the product. It contains product
information and other useful data.
The product is designed and manufactured in
accordance with:
• Safety standard EN 60335-1
• Safety standard EN 60335-2-21
• Welding standard EN ISO 3834-2
• Pressure vessel standard EN 12897
2.2 Intended use
The product is designed to supply domestic
hot water in combination with a central heat-
ing and cooling system. The product has been
designed to be connected to an external heat
pump.
2.3 CE marking
The CE mark shows that the product complies
with the relevant Directives. See Declaration of
Conformity at the manufacturers’ website for
more information.
The product complies with EU directives:
• Low voltage LVD 2014/35/EU
• Electromagnetic compatibility EMC 2014/30/EU
• Pressurised equipment PED 2014/68/EU
Any safety valve(s) used in the system shall be
CE-marked and comply with PED 2014/68/EU.
Parameter Unit Description
Measures HxWxD mm 1751x599x646
Weight (empty) kg 111
Weight (full) kg 401
Volume litres DHW+Buffer 230+60
Electric element - effect kW 2.8
Power supply V / Phase / Hz 230 / 1 / 50
Domestic hot water tank:
Volume litres 230
Max working pressure MPa (bar) 1,0 (10)
Pressure test (bar) MPa (bar) 1,5 (15)
Max working temp ºC 80
Connections / Material mm / EN ø22 / 1.4404
Tank material EN 1.4521
Insulation Material/thickness PUR / 50
Heating coil surface m² 1.8
Energy loss at 65ºC kWh/24h 1,25 / 0,7
Buffer tank:
Volume litres 60
Max working pressure MPa (bar) 0,3 (3,0)
Pressure test MPa (bar) 0,39 (3.9)
Max working temp ºC 80
Connections / Material mm / EN Ø22, copper
Tank material EN 1.4521
Insulation Material/thickness PUR / 50
Directive: 2010/30/EU Regulation: EU 812/2013 Directive: 2009/125/EC Regulation: EU 814/2013
Heat loss tested according to standard: EN 12897:2016
Brand Model name ErP rating
DHW tank
ErP rating
buffer tank
Standing heat
loss DHW tank
Standing heat
loss buffer tank
Storage vol. ltr.
DHW tank
Storage vol. ltr.
buffer tank
OSO PAW-TD23B6E5 B A 52 29 230 60

6
3.3 Product dimensions
3.3.1 Important notice before installation
Make sure you’ve chosen a heat pump that suits
existing heating system and power equipment.
The product must also suit the nominal water
flow, lift height and size of the system. Only use
clean water in the tank. If the water quality is poor
the tank may be damaged. There is also a risk of
corrosion and clogging if the water quality is not
maintained. The water quality must not exceed
these values:
Chloride content < 100 mg/l
Total Dissolved Solids < 200 mg/l
pH level > 6.0 / < 9.5
Should the water quality exceed the above pa-
rameters, a sacrificial anode may be installed
in the plugged G3/4” internal connection in the
DHW tank. The anode must be in compliance
with local regulations, and fitted by an authorized
installer before the system has been filled with
water. When the sacrificial anode is installed, the
water quality must not exceed these values:
Chloride content < 250 mg/l
Total Dissolved Solids < 500 mg/l
pH level > 6.0 / < 9.5
A
E
BC
D
Product. A B C D E F
NDS 17-37 1751 1853 646 599
Tolerance +/- 5 mm. (not dimension A).
3. INSTALLATION INSTRUCTIONS
3.1 Products covered by these instructions
80341990 PAW-TD23B6E5
3.2 Included in delivery
Ref
no. Pcs. Description
1 1 Air vent valve for DHW tank
2 1 Temperature and pressure valve (T&P)
3 1 Installation manual (this document)
4 1 DHW tank, 230L, max pressure 10.0 bar
5 1 Electronic box
6 1 3-way valve
7 1 Terminal block
8 1 Circulation pump
9 1 Drain valve for DHW tank
10 1 Air vent valve for buffer tank
11 1 Buffer tank, 60L, max pressure 3.0 bar
12 1 Drain valve for buffer tank
13 4 Adjustable feet
All dimensions in mm.
3
6
5
4
1 2
7
8
12
9
11
10
13

7
3.3.3 Transport and unpacking
The product should be transported carefully,
with packaging. Also please note:
• The product is very heavy and should not
be lifted by one person alone.
• Do not transport the unit horizontal. This
can cause damage or failure.
• To avoid hand injury, wear gloves when
moving the product and/or while remov-
ing the packaging.
• Be careful not to damage the product
while removing the packaging.
• To avoid damage an installed tank must
be drained before moving.
!
CAUTION
Pipe stubs, valves etc. should not be used to
lift the product as this could cause malfunc-
tions.
3.4 Requirements for installation, location
and positioning
!
CAUTION
!
The product shall be placed in a room with a drain to avoid any damages in case of water
escaping from the product.
!
The product must be placed in an area that is dry, clean, free of vapour, volatile oils,
smoke and gases to avoid any damages to internal parts of the product.
!
The product shall be placed in a dry and permanently frost-free position.
!
The product shall be placed on a floor surface suitable for the total weight of the product
when in operation. See product data plate.
!
Install the tank unit as close to the heat pump as possible. This limits the necessary vol-
ume of coolant (due to pipe length).
!
The product must have a service clearance of 120 cm in front of the cover / 50 cm on top.
!
The product shall be easily accessible in the home for servicing and maintenance.
3.3.2 Pipe connections and valves
Ref. Dim. Description
a ø22 Radiator circuit return
b ø22 Domestic cold water in
c ø22 Domestic hot water out
d 3/4” Temperature and pressure valve (T&P)
e ø22 Radiator circuit flow
f ø22 Heat pump circuit flow
g 1/8” Air vent valve for heating system
h ø22 Heat pump circuit return
i DN15 Drain valves (DHW tank & buffer tank)
a
b
c
d
e
f
g
h
i

8
Cold water
inlet Hot water outlet HP flow HP return Rad. flow Rad. return Drain
ø 22 ø 22 ø 22 ø 22 ø 22 ø22 DN15
3.5 Pipe installation
The domestic hot water tank (upper) is designed
to be permanently connected to the mains water
supply. The buffer tank (lower) is designed to be
permanently connected to the heating system,
with max. pressure 3 bar / 0.3 MPa. A separate
safety valve with rated opening pressure max. 3.0
bar must be installed in the heating system. Ap-
proved pipes of the correct size should be used
for installation. The relevant standards and regu-
lations must be followed.
3.5.1 Heating and domestic hot water
Use connectors that reduce transfer of vibration,
and can withstand the water temperature and
pressure. To avoid “taps” in the heating system,
the pipes must be able to withstand temperature
differences.
3.5.2 Pipe connection dimensions
3.5.3 Pipe installation procedure
1. Place the unit in the desired position. Adjust
unit to a level position by using the adjust-
able feet. The tank must be levelled before
it is connected and filled with water. Remove
front cover, see pt. 3.5.4.
2. Flush/clean the existing heating system care-
fully to avoid contaminating the particle filter.
3. Connect the domestic water supply. A mixing
valve is recommended to avoid scalding.
4. Connect the unit supply and return pipes
to the existing heating system. The various
pipes are marked on the top of the tank.
5. Connect an escape pipe and tundish be-
tween the Temperature & Pressure relief
valve and the floor drain.
6. Connect an escape pipe between the radia-
tor safety valve and the floor drain.
7. Verify if the expansion vessel is dimensioned
for the heating system (approx. 10% of the
total volume in the system.)
8. Check the re-pressure of the expansion ves-
sel. The pressure depends on how high the
water has to be lifted.
9. Fill the domestic hot water tank before filling
the buffer tank. Open a hot water tap to ven-
tilate and allow free flow of water.
10. Put the 3-way valve manually in ”fill mode”
(both flow way open) and open the manual /
automatic air vent.
11. Fill the radiator system and close the manual
air vent.
12. Keep the pressure within the recommended
pressure range to prevent the water escap-
ing through the safety valve. Restore the
3-way valve in automatic position.
13. Bleed the radiators. Check the system pres-
sure. Fill more water to the system if needed.
Repeat until all air is bled from the system.
14. Check if the diverting valve switches to radia-
tor operation and that the radiators heat up.
Bleed the system once it is warm. Check for
leaks in the system.
15. Close the automatic air vent after approx. two
weekstopreventairfromenteringthesystem.
3.5.4 Removing the front cover
1. Unscrew and remove the two screws in
the lower part of the front panel (1).
2. Pull out the lower part of the front approx.
100-150mm. (2).
3. Grip the sides of the front panel and lift it
straight up (3).
4. Remove the front panel carefully to not
damage the contact or the cable connec-
tion between the display and the control
unit inside the front panel.
1
2
3

9
RECOMMENDATION
-Allow clearance to the floor for venting purposes. Screw the feet out a minimum of 15 mm
from the bottom of the product.
3.5.6 Fitting instructions
3.5.5 Pipe connection layout
3.5.7 Installation recommendation
!
CAUTION
!
The product should be placed in a room with a drain to avoid any damages in case of
water escaping from the product.
!
The product should be placed on a floor surface suitable for the total weight of the prod-
uct when in operation. See product data plate.
!
The product must have a service clearance of 120 cm in front of the cover / 50 cm on top.
!
WARNING
!
The product must be filled with water before the power is switched on.
!
Any overflow pipe from the T&P valve must be installed uninterruptable and frost-free
with a continuous fall to the drain/gully.
20
30
40
506070
80
90
100
11010
1200
°C
DHW
Radiator circuit
outdoor unit
Heat pump circuit
indoor
unit

10
3.6.3 Fitting instructions
!
WARNING
!
The product must be filled with water before the power is switched on.
!
Any fixed electric fittings must be installed by an authorised electrician. The relevant stand-
ards and regulations must be followed.
!
The mains cable should withstand 90°C. A strain reliever must be fitted.
!
CAUTION
!
The product must have a service clearance of 120 cm in front of the cover / 50 cm on top.
!
In case of damage to the mains cable, it should be replaced with a suitable mains cable
from the manufacturer.
3.6 Electrical installation
Fixed electric fittings should be used for installation.
Any fixed electric fittings must be installed by an
authorised electrician. The relevant standards and
regulations must be followed.
Wiring: Connect the corresponding wires from the
hydrobox into the electronic box inside the tank
unit according to pt. 3.6.4. OLP for Booster Heater
at the HP must be jumpered.
3.6.1 Backup immersion heater thermostat
The immersion heater is designed as an auxil-
iary backup heat source. Power to the immersion
heater must not be switched on until the unit is
filled with water. The unit is fitted with one 2.8 kW
immersion heater which is located in the electrical
box, see pt. 5.1.
Alternative thermostats must not be used. Follow
the wiring instructions (right) connecting the live (L),
neutral (N) and earth cables as indicated.
The heater must be connected to a minimum 16
amp dedicated permanent supply complying with
current local wiring regulations, isolation is required
via a minimum 20 amp double pole isolation switch
with a minimum 3 mm separation required.
All electrical wiring should be carried out by a com-
petent electrician, using a heat resistant cable (mini-
mum 85°C), and be in accordance with the latest
local Wiring Regulations. The TSR thermostat func-
tions solely as a safety cut-out and will operate at
85°C (±5°C). Should this happen, check reasons for
thermal cut-out button being released and when
satisfied press the reset button (R).
3.6.2 Replacing the safety cut.out thermostat
Disconnect power supply. Disconnect power cables
!
WARNING
Constant voltage present in electronic box. Be-
fore any electrical work is done, the power sup-
ply must be disconnected and secured against
activation while the work is in progress.
The thermostat must never be dismantled/
opened. This will compromize its function and
cause risk of overheating. Warranty will cease.
(L) and (N) from the thermostat by loosening screw
A and B. Pull thermostat straight out of the element.
Fit the replacement thermostat by inserting the
temperature sensor (D) into the tube (E). Push ther-
mostat connectors firmly into the connector recep-
tors (C) and make sure the connectors are inserted
fully into the receptors. Refit power cables (L) and
(N), tighten screws A and B to 2 Nm (+/- 0.1).
L N
98 From terminal block
C
R
ED
Thermostat Element