OSO HOTWATER PAW-BTANK50L User manual

SAFETY INFORMATION
O&M INFORMATION
INSTALLATION MANUAL
TDS - TECHNICAL DATA SHEET
Languages in manual:
EN - English
BK - Bulgarian
CZ - 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
145967-04 - 02-2021
PAW-BTANK50-100L
50-100 l.
EU

2
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.................................................................... 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
4. Initial commissioning.............................................. 9
4.1. Filling with water................................................ 9
4.2. Control points..................................................... 9
4.3. Emptying of water............................................ 9
4.4. Handover to end-user.................................... 9
5. Warranty conditions.......................................... 10
5.1. Warranty and registration....................... 10
5.2. Customer service.......................................... 10
6. Disposing of the product................................ 11
6.1. Removal............................................................. 11
CONTENTS

3
!
1. SAFETY INSTRUCTIONS
1.1 General information
• Read the following safety instructions
carefully before installing, maintaining or
adjusting the buffer tank.
• 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 presupposes compli-
ancy (by the end-user) with the safety,
operating and maintenance instructions
supplied and with the installation manual
and relevant standards and regulations 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
!
SHALL BE DONE
!
This document shall be kept in a suitable place where it is accessible for future reference.

4
1.2 Safety instructions for users
!
WARNINGS
!
The appliance may be used by children older than 8 years old, elderly persons and persons with
physical, sensory or mental disabilities or lacking experience and knowledge, if they are under
supervision or taught about safe use of the appliance and if they are aware of the potential
dangers.
Children shall not play with the appliance.
Children shall not clean or perform maintenance on the appliance without supervision.
!
Installation shall be carried out in accordance with the valid regulations and according to the
instructions of the manufacturer and by qualified staff.
!
In a closed, pressurised system of installation, it is obligatory to install a safety valve on the sys-
tem with a rated pressure of max. 0.3 MPa (3 bar) (see the label), which prevents the elevation
of pressure in the buffer by more than 0.1 MPa (1 bar) above the rated pressure.
!
The outlet of the safety valve shall be installed facing downwards and in a non-freezing area.
!
To ensure proper functioning of the safety valve, the user shall perform regular controls
to remove limescale and make sure the safety valve is not blocked.
Do not install a stop valve between the buffer and the safety valve, because it will impair the
pressure protection of the buffer!
!
If the system has to be switched off, please drain any water from the buffer to prevent freezing.
Please do not try to fix any defects of the buffer on your own. Call the nearest authorized ser-
vice provider.

5
2.4 Technical data
2. PRODUCT DESCRIPTION
Product
No. Product code: Capacity
persons Weight kg. DiaxHeight- mm. Freight vol. m³
Thermostat
setting °C
Volume
40°C
Heat-up time
Dt 65°C Heat loss W
80341985 PAW-BTANK50L-2 -17 ø430x636 0,18 - - -35
80341986 PAW-BTANK100L -28 ø430x1175 0,27
- - -55
2.1 Product identification
Identification details for your product can be found
on the type plate fixed to the product. The type
plate contains details of the product in accordance
with EN 12897:2016 as well as other useful data. See
Declaration of Conformity at the manufacturers’
website for more information.
The product is designed and manufactured in ac-
cordance with:
• Pressure vessel standard EN 12897:2016
The manufacturer is certified according to the fol-
lowing standards:
• Welding quality EN ISO 3834-2
• Quality ISO 9001
• Environment ISO 14001
• Work environment ISO 45001
2.2 Intended use
The PAW-BTANK is designed for use as a buffer
tank for both heating and cooling systems.
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 the following directive(s):
• Pressure Equipment Directive PED 2014/68/EU
The safety valve(s) used must be CE marked and
conform to PED 2014/68/EU.
2.5 ErP data - Technical Data Sheet
Brand Model-no. Model name ErP
profile
ErP
Rating AEC - kWh/a Thermostat setting °C
Heat
loss W
Actual
volume L
PAW 80341985 PAW-BTANK50L-2 - B - - 35 48
PAW
80341986 PAW-BTANK100L - C - - 55 100
Directive: 2010/30/EU Regulation: EU 812/2013 Directive: 2009/125/EC Regulation: EU 814/2013
Heat loss tested acc. to standard: EN 12897: 2015

6
3.3 Product dimensions
3.3.1 Delivery
The product shall be transported carefully as
shown, with packaging. Use the handles in the box.
Product A* B* C D E ø
PAW-BTANK50L-2 704 636 422 192 96 435
PAW-BTANK100L 1243 1175 962 192 96 435
Tolerance +/- 5 mm
*Total height tolerance +0 / -13 mm.
3. INSTALLATION INSTRUCTIONS
3.1 Products covered by these instructions
80341985
PAW-BTANK50L-2
80341986 PAW-BTANK100L
3.2 Included in delivery
Ref no. Pcs. Description
1 1 Buffer tank with sensor bracket
2 1 Manual (this document)
3 1 Automatic air vent (included)
4 1 Drain cock (included)
5 1
Wall bracket (incl. only for PAW-BTANK50L-2)
6 2 1” brass plug with o-ring seal (included)
Ref no. Part No. Description
3765063 1/2” M Automatic air vent
4514178 1/4” M Drain cock
6514177 1” M Brass plug with o-ring seal
All dimensions in mm.
E
BA
D
C
ø
2
3
1
4
6
5
3.2.1 Spare parts list
!
CAUTION
Pipe stubs, valves etc. shall not be used to lift the
product as this could cause malfunctions.

7
3.4.1 Temperature sensor installation
The product is equipped with a temperature sensor
bracket which allows installation of a 6 or 8 mm.
temperature sensor. To install the temperature sensor
follow the instructions below.
1. Remove temperature sensor bracket (A) from
tank body by gripping it and pulling straight out.
2. Insert temperature sensor (B) firmly into the
appropriate grooves in the sensor bracket and
place the temperature sensor cable in the cable
slot (D).
An 8 mm. sensor (shown) fits in the upper
grooves (C) while a 6 mm. sensor fits in the lower
groove (E).
3. Refit the sensor bracket into the tank body,
ensuring the bracket is inserted fully to establish
proper contact between the sensor and the
stainless steel inner tank surface. Make sure the
sensor cable is positioned properly in the cable
slot (D) to avoid potential damage to the cable.
3.4 Requirements for installation location and
positioning
!
CAUTION
!
The product shall be placed in a room with a drain to prevent any damages in case of
water escaping from the product..
!
The product shall be placed in a dry and permanently frost-free position.
!
The product shall be placed on a floor or wall suitable for the total weight of the product
when in operation. See table in page 5. Wall bracket is supplied.
!
The product must have a clearance for servicing of 40 cm in front of the unit / 10 cm over the
top connection.
!
The product shall be easily accessible for servicing and maintenance.
Min.
40 cm
Min. 10 cm
Min.
45 cm
Min. 40 cm
A
B
C
E
D
A

8
3.5.3 Fitting instructions
!
CAUTION
!
The product shall be placed in a room with a drain to prevent any damages in case of
water escaping from the product.
!
The product shall be properly aligned vertically and horizontally, on a floor or wall suitable for
the total weight of the product when in operation. See type plate.
!
The product must have a clearance for servicing of 40 cm in front of the unit / 10 cm over the
top connection.
!
A CE marked safety valve with a set pressure of max. 3 bar must be fitted in the system.
No. Dimension Connection description
11/2” BSPP female Venting
21” BSPP female Flow/ret. connection upper
31” BSPP female Flow/ret. connection lower
41/4” BSPP female Drain
3.5 Pipe installation
3.5.1 Pipe and plug fitting
A) Run pipes of suitable size to the connections
shown (2 and 3), and affix with suitable
sealant.
B) Unused connections must be plugged
securely. Use the provided 1” brass plugs.
Ensure the o-ring seal (6) is placed correctly
in the o-ring groove (5) before fitting.
C) Fit Automatic air vent valve to venting
connection (1) after filling. See pt. 4.1.
D) Fit Drain cock to drain connection (4).
The product is designed to be permanently con-
nected to the heating system, max. pressure
3 bar / 0,3 MPa. Approved pipes of the correct
size should be used for installation. The relevant
standards and regulations must be followed. 2
3
2
3
4
1
5 6
Component Torque
Automatic air vent valve - 1/2” 5 Nm (+/-1 - hand force)
Drain cock- 1/4” 6 Nm (+/-1)
Brass plug - 1” 40 Nm (+/- 5)
3.5.2 Torque settings

9
4.1 Filling with water
First check that all pipes are connected correctly.
Then do the following:
A) Vent the system, preferably at its highest
point.
B) Open water supply to the product. When
water flows out of the vent the system is full.
C) Fit the Automatic air vent valve (1) to the top
connection, max. torque 5 Nm.
4.2 Control points
A) Check that all pipe connections to/from the
product are tight and not leaking.
B) Check that the product is standing/hanging
level vertically and horizontally.
4. INITIAL COMMISSIONING
4.3 Draining
2
1
4.4 Handover to end-user
THE INSTALLER MUST:
Brief the end-user on safety and maintenance
instructions.
Brief the end-user on settings and emptying the
product.
Hand this installation manual over to the end-
user.
Enter contact details on the type plate on the
product.
!
WARNING
The water temperature in the product is high and
could cause scalding. Special care should there-
fore be taken when emptying the product.
A) Disconnect the power supply.
B) Shut off incoming water supply.
C) Open the air vent valve (2). Leave open while
emptying (prevents vacuum).
D) The product is emptied via the drain cock (2).
After emptying, close the drain cock (2).
E) Close air vent valve (1).

10
5. WARRANTY CONDITIONS
WARRANTY
1. Scope
The Distributor warrants for 2 years from the
date of purchase, that the Product will: i) con-
form to specification, ii) be free from defects in
materials and workmanship, subject to condi-
tions below.
The warranty only applies to Products pur-
chased by a consumer, that has been installed
for private use and that has been sold by the
Distributor or a designated retailer where the
Products have been originally sold by the Dis-
tributor.
The warranty does not apply to Products pur-
chased by commercial entities or for Products
that have been installed for commercial use.
These shall be subject only to the mandatory
provisions of the law. The conditions and limi-
tations set out below shall apply.
2. Coverage
If a defect arises and a valid claim is received
within the statutory warranty period, at its op-
tion and to the extent permitted by law, the
Distributor shall either; i) repair the defect, or;
ii) replace the product with a product that is
identical or similar in function, or; iii) refund the
purchase price.
Any exchanged Product or component will
become the legal property of the Distributor.
Any valid claim or service does not extend the
original warranty. The replacement Product or
part does not carry a new warranty.
3. Conditions
The warranty applies only if the conditions set
out below are met in full:
• The Product has been installed by a pro-
fessional installer, in accordance with the
instructions in the installation manual and
all relevant Codes of Practice and Regula-
tions in force at the time of installation.
• The Product has not been modified in any
way, tampered with or subjected to mis-
use and no factory fitted parts have been
removed for unauthorized repair or re-
placement.
• The Product has only been connected to
a closed heating circuit filled with domes-
tic water in compliance with the European
Drinking Water Directive EN 98/83 EC. The
water should not be aggressive, i.e. the
water chemistry shall comply with the fol-
lowing:
• Chloride < 250 mg / L
• Total Dissolved Solids (TDS) < 500 mg / L
• Saturation Index (LSI) @ 80°C < 0,8
• pH level < 9,5 / > 6,0
• Any disinfection has been carried out
without affecting the Product in any way
whatsoever. The Product shall be isolated
from any system chlorination.
• Service and/or repair shall be done ac-
cording to the installation manual and all
relevant codes of practice. Any replace-
ment parts used shall be original spare
parts supplied by the Distributor.
• Any third-party costs associated with any
claim has been authorized in advance by
the Distributor in writing.
• The purchase invoice and/or installation
and servicing invoice, a water sample as
well as the defective product is made
available to the Distributor upon request.
Failure to follow these instructions and condi-
tions may result in product failure, and water
escaping from the Product.
4. Limitations
The warranty does not cover:
• Any fault or costs arising from incorrect
installation, incorrect application, lack of
regular maintenance in accordance with
the installation manual, neglect, acciden-
tal or malicious damage, misuse, any al-
teration, tampering or repair carried out
by a non-professional, any fault arising
from the tampering with or removal of
any factory fitted safety components or
measures.
• Any consequential damage or any indirect
loss caused by any failure or malfunction
of the Product whatsoever.
• Any pipework or any equipment connect-
ed to the Product.
• The effects of frost, lightning, voltage
variation, lack of water, dry boiling, excess
pressure or chlorination procedures.
• Damage caused during transportation.
Buyer shall give the carrier notice of such
damage.
• Costs arising if the Product is not immedi-
ately accessible for servicing.
These warranties do not affect the Buyer’s stat-
utory rights.

11
6. DISPOSING OF THE PRODUCT
Information for users on collection and dis-
posal of old equipment:
6.1 Disposal
The shown symbols on the products, packag-
ing and/or accompanying documents mean that
used electrical and electronic products should not
be mixed with general household waste.
For proper treatment, recovery and recycling of
old products, please bring them to applicable col-
lection points in accordance with your national
legislation and the Directives 2002/96 EC and
2006/66 EC.
By disposing of these products correctly, you will
help saving valuable resources and prevent any
potential negative effects on human health and
the environment which could otherwise arise
from inappropriate waste handling.
For more information about collection and recy-
cling of old products, please contact your local
municipality, your waste disposal service or the
point of sale where you purchased the item(s).
Penalties may be applicable for incorrect disposal
of this waste, in accordance with national legisla-
tion.
6.1.1 For business users in the European Union:
If you wish to discard electrical and electronic
equipment, please contact your dealer or supplier
for further information.
6.1.2. Information on disposal in other countries
outside the Eropean Union
These symbols are only valid in the European Un-
ion. If you wish to discard these items, please con-
tact your local authorities or dealer and ask for the
correct method of disposal.

© This installation manual and all its content is protected by copyright and
may be reproduced or distributed only with written concent from the manufacturer.
We reserve the right to make changes without notice.
PAW-BTANK50-100L
50-100 l.
Manufactured by OSO Hotwater AS
Industriveien 1 - 3300 Hokksund - Norway
Tel: [phone]
E-mail: [email protected] / www.osohotwater.com