OSO HOTWATER Ecoline SCE 120 User manual

146243-00 - 10-2021
Ecoline - SCE
120-150-180-210-250-300 l.
EN
SAFETY INFORMATION
O&M INFORMATION
INSTALLATION MANUAL
TDS - TECHNICAL DATA SHEET

2
CONTENTS
1. General information
1.1 Product identification..........................................4
1.2 UKCA Marking ......................................................4
1.3 Technical Data Sheet. .........................................4
1.4 General information ...........................................4
1.5 Handling ...................................................................5
1.6 Clearances ................................................................5
2. lnstallation
2.1 Health and safety regulations........................ 6
2.2 Siting the Ecoline SCE........................................ 6
2.3 Component check Iist........................................ 6
2.4 Supply requirements .........................................6
2.5 Expansion vessels ...............................................6
2.6 Wall mounting .....................................................6
2.7 Preliminary wiring................................................6
2.8 Adjustable feet ......................................................7
2.9 Pipework...................................................................7
2.10 Vessel connections ...........................................7
2.11 Combination valve ............................................7
2.12 Cold mains supply ............................................7
2.13 Hot water outlet .................................................7
2.14 Balanced cold water supply (optional) ..7
2.15 Tundish....................................................................8
2.16 Discharge pipe.....................................................8
2.17 Primary flow / return........................................8
3. Commissioning
3.1 Commissioning and filling ..............................9
3.2 Draining ....................................................................9
3.3 System flushing ...................................................9
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 must be kept in a suitable place where it is accessible for future reference.
4Electrical installation
4.1 lmmersion heaters. ............................................ 10
4.2 Wiring of immersion heaters ......................10
4.3 Electrical connections .....................................10
4.4 System wiring.......................................................10
4.5 S plan wiring layout ......................................... 12
4.6 Y plan wiring layout .........................................13
5. Safety and servicing
5.1 Safety cut out........................................................14
5.2 Intermittent discharge from tundish ...... 14
5.3 Continuos hot discharge from tundish .14
5.4 Expansion vessel maintenance ..................14
5.5 Warranty ................................................................ 14
5.6 Service procedure .............................................14
5.7 Alternative discharge. ......................................15
6. OSO fault finding guide
Fault finding guide .................................................. 16
7. Technical specification
Technical and performance specifications ... 17
Commisioning and service logbook .............. 19
Service interval record.............................................23
8. Warranty conditions
Warranty.........................................................................22
8.1 Customer service ................................................22
9. Removing the product
9.1 Removal...................................................................22
9.2 Returns scheme ..................................................22
This OSO product is approved to building and
water regulations by KIWA Watertec Ltd.
Tel: [phone]
Email: [email protected]

3
Safety instructions
•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-
Safety instructions for installers
!
WARNING
The overflow from the safety valve must NOT be sealed or plugged.
!
Discharge must comply with current building regulations.
!
Fixed electric fittings shall be used for installation in new homes or when changing an
existing electrical setup in accordance with regulations.
!
The mains cable shall withstand 85°C. A strain reliever must be fitted.
!
The product shall be filled with water before the power is switched on.
!
The relevant regulations and standards, and this installation manual, must be followed.
Safety instructions for users
!
WARNING
The overflow from the safety valve must NOT be sealed or plugged.
The product front and electric junction box must NOT be covered
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 shall be filled with water before the power is switched on.
!
Maintenance/settings shall only be carried out by persons over 18 years of age, with suf-
ficient understanding
!
CAUTION
The product must not be exposed to frost, over-pressure, over-voltage or chlorine treat-
ment. See warranty provisions.
Maintenance/settings shall not be carried out by persons of diminished physical or men-
tal capacity, unless they have been instructed in the correct use by someone responsible
for their safety.
!
CAUTION
!
The cylinder must be installed in compliance with current building regulations. Liability for
consequential damage will only apply if this is followed.
!
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 400 mm in front of the immersion cover
/ 150 mm above the highest point.
Do not use the balanced cold connection to feed any outlets other than mixer showers.
Under no circumstances use the balanced cold connection to feed all cold water outlets as
this practice contravenes Section 10 of water regulations.
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.

4
1. GENERAL INFORMATION
1.1 Product Identification
Identification of your product can be found on
the label attached to the product. The label con-
tains information about the product according to
EN 12897: 2016 and EN 60335-2-21, in addition to
other useful data. See Declaration of Conformity
at www.osohotwater.co.uk for more information.
OSO products are designed and manufactured
according to:
•Tank standard EN 12897:2016
•Safety standard EN 60335-2-21
•Welding standard ISO 3834-2
OSO Hotwater AS is certified according to
•Quality ISO 9001
•Environment ISO 14001
•Working Environment ISO 45001
1.2 UKCA marking
The UKCA mark shows that the product complies
with the relevant Directives. See Declaration of
Conformity at www.osohotwater.co.uk for more
information.
The product complies with he directives for:
• Low voltage LVD 2014/35/EU
• Electromagnetic compatibility EMC 2014/30/EU
• Press Equipment PED 2014/68/EU
1.4 General information
Thank-you for purchasing the OSO Ecoline SCE
indirect hot water cylinder.
OSO advise that the electrical cables are fixed in
place prior to the positioning of the cylinder.
This manual gives detailed advice for installation
and should be read carefully prior to fitting any
unvented unit. OSO Ecoline SCE cylinders are not
suitable for gravity fed primary systems. In known
hard water regions, precautions should be tak-
en to prevent limescale formation in hot water
cylinders, in accordance with Building Regulation
Part L, Domestic Heating Compliance Guide.
This OSO cylinder must be installed by a com-
petent person and be installed in compliance
with the OSO Installation and Maintenance In-
structions, all current legislation, codes of prac-
tice and regulations governing the installation of
unvented hot water cylinders in force at the date
of installation.
1.3 Technical Data Sheet
Trade mark M T.
item no. Model/identifier ErP
Rating Heat loss W Storage volume L
OSO Hotwater AS 1327051 SCE 120 - 2.8kW @ 230V/3.0kW @ 240V + coil 0.5m² B 44 109
OSO Hotwater AS 1327052 SCE 150 - 2.8kW @ 230V/3.0kW @ 240V + coil 0.8m² B
54 142
OSO Hotwater AS 1327053 SCE 180 - 2.8kW @ 230V/3.0kW @ 240V + coil 0.8m² C
61 163
OSO Hotwater AS 1327054 SCE 210 - 2.8kW @ 230V/3.0kW @ 240V + coil 0.8m² C
67 190
OSO Hotwater AS 1327055 SCE 250 - 2.8kW @ 230V/3.0kW @ 240V + coil 0.8m² C
80 239
OSO Hotwater AS 1327056 SCE 300 - 2.8kW @ 230V/3.0kW @ 240V + coil 0.8m² C
89 277
Directive: 2010/30/EU Regulation: EU 812/2013 Directive: 2009/125/EC Regulation: EU 814/2013
Heat loss tested acc. to standard: EN 12897/2016
TDS - Indirect water heater
!
CAUTION
This indirect hot water storage tank is intended to be connected to a high efficiency external energy source.
The immersion heaters are intended for backup and supplementary use only. Immersion heaters as sole heat
source should be avoided and would lead to higher energy consumption and higher operating cost.

5
1.5 Handling, location and positioning
The product should be transported carefully as
shown, with packaging. Use the handles in the
box.
1.6 Clearances
!
CAUTION
!
The cylinder must be installed complying with current building regulations.
!
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 type plate.
!
The product must have a clearance for servicing of 400 mm in front of the immersion cover
/ 150 mm above the highest point.
!
The product shall be easily accessible in the home for servicing and maintenance.
!
CAUTION
Tappings, valves etc. shall not be used to lift
the product as this could cause malfunction.
Min. 150 mm
Min. 400 mm
Min.
400 mm

6
2. INSTALLATION
2.1 Health and safety regulations
Handling Operations Regulations 1992 defines
manual handling as: “any transporting or support-
ing of a load (including the lifting, putting down,
pushing, pulling, carrying or moving thereof by
hand or bodily force”. The Regulations set no spe-
cific requirements such as weight limits. However
common sense still has to be used based on an er-
gonomic approach for each individual. The Ecoline
SCE should be transported and stored in a vertical
position.
2.2 Siting the Ecoline SCE
There are few restrictions on the siting of the
OSO Ecoline SCE, however it should not be sited
anywhere open to frost attack. The unit should
be placed on a stable flat surface capable of with-
standing the weight of the cylinder when full (see
table on page 20) and access must be allowed for
maintenance purposes. Prior to positioning the
cylinder, wind out the feet in the base to protrude
by 10 mm (35 mm if using optional wall bracket). If
wall mounted with an OSO wall bracket, the wall
should be capable of withstanding the forces gen-
erated by the weight of the full cylinder. Provision
should also be allowed for the routing of the dis-
charge pipe away from the cylinder to an outside
point according to building regulation G3.
2.3 Component check list
Components supplied with the unit in a separate
accessory kit for site fitting:
•Expansion vessel with wall bracket
•Fittings kit
Components factory fitted:
•Temperature & pressure relief valve
•Immersion heater(s) - 3 kW
•Thermostat(s) / thermal cut-out.
Documentation supplied:
•Installation manual & service logbook
2.4 Supply requirements
An uninterrupted 22 mm cold water mains supply
is recommended, however if only a 15 mm supply is
available, this may be used provided there is suffi-
cient flow rate available. A minimum standing pres-
sure of 2.5 bar and a flow rate of 20 litres per minute
with a 1 bar dynamic pressure is recommended. The
cylinder will operate at lower pressures and flow
rates however the performance will be compro-
mised. The OSO unvented unit is designed for use
with supply pressure up to 12 bar. For pressures
over 12 bar an additional pressure reducing valve
must be fitted in the supply pipe to the unit.
2.5 Expansion vessel
An external expansion vessel is provided to be
connected to the multifunction valve.The vessel(s)
accommodate expanded water when the cylinder
is heated and prevents the cylinder reaching its
maximum working pressure.
2.6 Wall mounting
VB16 wall mounting brackets are available for OSO
unvented units Ecoline SCE 120-180.
2.7 Preliminary wiring
Before final installation and pipe fitting it is rec-
ommended to feed the electrical wires to the
electrical box. The OSO Ecoline SCE is provided
with two channels in the base to feed electrical
cables to the cylinder. The channels run diago-
nally from the front centre to the rear left and
right, and ensures a neat installation with mini-
mum visible cabling.
When the cylinder is moved into position re-
move the electrical box covers. The power cables
should be fed up from the base channels into the
electrical box. When cables are connected they
must be secured using the cable clamp.
All cables should comply with BS6141 table 8 HOFR
85c. Cables should be sufficient length to reach
from the junction box through the base channels
and leave an amount of tail from the front of the
cylinder sufficient to reach the electrical connec-

7
tion point.
For more information about electrical installations
see chapter 4. ELECTRICAL INSTALLATION.
2.8 Adjustable feet
Ensure the cylinder feet are wound out to pro-
trude at least 10 mm. from the bottom of the
product. Adjust the feet to ensure the product
is plum and level when placed in its final location.
2.9 Pipework
The product is designed with a 22 mm. cold wa-
ter inlet connection at the bottom, and a 22 mm.
hot water outlet at the top. Before connecting
the cold supply, flush the cold supply pipework
of all flux and debris.
2.10 Vessel connections
Fit the expansion vessel and bracket on a suit-
able wall close to the cylinder. Check the expan-
sion vessel(s) connections are tight.
2.11 Combination valve
Fit the valve.
2.12 Cold mains supply
Connect the cold mains supply (1) to the cold in-
let connection of the cylinder (7) and fit a drain
valve at lowest point of cold supply pipe (6).
Make the connection of multibloc valve on cold
supply pipework, see illustration. If secondary
return is required, fit via a Tee piece in the cold
feed pipe to the cyinder (7).
2.13 Hot water outlet
Connect the hot water distribution pipe to the ø22
mm. hot water draw off (12) on top of cylinder.
2.14 Balanced cold water supply (optional)
If no balanced cold supply is required, tighten
the supplied blanking cap.
If a balanced mains pressure cold water sup-
ply is required to a shower or bidet (over rim
type only , ascending spray type requires type
AA, AB or AD air gap), remove blanking cap
and connect to the shower or bidet cold sup-
ply (2) on the combination valve. Major shower
manufacturers advise fitting a mini expansion
vessel in the balanced cold supply pipework to
accommodate thermal expansion and prevent
tightening of shower controls.
No. Description Dim.
1 Cold water supply ø22 mm
2 Balanced cold supply (optional) ø22 mm
3 Expansion vessel 1/2”
4 Multibloc valve 3/4”
5 Discharge pipework 15-22 mm
6Drain cock (not supplied) 3/4”
7Cold water inlet ø22 mm
8Tundish 15-22 mm
9Expansion vessel connection point 3/4”
10 Line strainer -
11 Expansion relief valve 6 bar ø15 mm
12 Domestic hot water outlet (DHW) ø22 mm
13 Expansion overflow connection ø15 mm
14 T&P safety valve 90-95°C - 7 bar 1/2”
!
CAUTION
Do not use the balanced cold connection to
feed any outlets other than mixer showers
and over rim bidets. Under no circumstances
use the balanced cold connection to feed all
cold water outlets as this practice contra-
venes Section 10 of water regulations.
8
13 2
6
7
5
119
2
10
12
14
13
4

8
No. Description Dim.
1Domestic hot water outlet (DHW out) ø22 mm
2Coil FLOW ø22 mm
3Coil RETURN ø22 mm
4Temperature and Pressure relief valve 1/2”
5Cold water inlet ø22 mm
6Expansion relief valve connection 3/4”
2 3
1
4
5
2.15 Tundish
Recommended position of the tundish (8) is to
the right of the cylinder as seen from the front,
see illustration on previous page.
The tundish should be visible and positioned
away from electrical devices.
2.16 Discharge pipe
Connect the tundish outlet to the discharge
pipe. Install the tundish in a vertical position
within a maximum of 500 mm from the Tem-
perature and Pressure Relief Valve drain con-
nection. Ensure the expansion relief pipework
discharges through the tundish. Tundish pipe-
work must be 22 mm with a minimum vertical
length of 300 mm below tundish. Maximum
permitted length of 22 mm pipework is 9 m.
Each bend or elbow is equivalent to 0.8 m of
pipework. All pipework must have continous
fall and discharge in a safe, visible position.
If any doubt, refer to Building Regulation G3.
Discharge pipe must be dedicated to the cyl-
inder and must not be used for any other pur-
pose, see page 15.
2.17 Primary Flow and Return
The boiler primary flow and return connections
should be made to flow and return conections
on top of cylinder. To comply with regulations
governing the installation of indirect unvent-
ed cylinders, a motorised valve must be fit-
ted in the primary pipework. Your OSO unit
has been supplied with a two port motorised
valve, which will act as a positive energy cut-
out should the safety cut-out operate. The mo-
torised valve will also control the temperature
of the domestic stored water via the cylinder
thermostat, which is located in the electrical
box.
The unit can be installed on an “S” or “Y” plan
system. The motorised valve should be con-
nected to primary flow pipe. The motorised
valve has 22 mm copper connections. the max-
imum operating temperature of the primary
flow should be 82°C.
For electrical connection of the motorised
valve please read pt. 4 Electrical installation in-
structions.
6
Alternative pipework congurations
would be allowed to suit installation.

9
3. COMMISSIONING
3.1 Commissioning and filling
1. Check all connections for tightness.
2. Open hot water tap furthest away from the
OSO water heater.
3. Open the mains stop cock to fill the water
heater. When water flows evenly from tap, al-
low to run for a few minutes to flush through
any dirt, swarf or residue, then close the tap.
Open successive hot taps to purge any re-
maining air.
4. Check all water connections for leaks and rec-
tify if necessary.
5. For test purposes manually operate Tem-
perature and Pressure relief valve (4) to en-
sure free water flow through discharge pipe
by turning knob counter-clockwise. To close
continue to turn knob counter-clockwise until
the valve shuts.
6. Switch electrical power on.
3.2 Draining
Switch off the electrical power. Attach a hose to
drain valve (6), open valve to drain. Open a hot tap.
Draining process may be speeded up by opening
the Temperature and Pressure relief valve (4). A
hose can be applied to the cold water connection
to lead the water to a gully, sink or similar.
3.3 System flushing
System flushing will not be necessary under nor-
mal circumstances as the line strainer will prevent
ingress of foreign materials, however if flushing is
required, run at least 50 litres of water from the
cylinder at the highest possible flowrate. Close the
taps and follow draining procedure above.
5
4

10
4. ELECTRICAL INSTALLATION
4.1 Immersion heaters
Power to immersion heaters should not be
switched on until the unit is filled with water. All
units are fitted with a 3 kW immersion heater.
Immersion heaters must be wired through the
factory fitted thermostat and thermal cut-out ac-
cording to diagram on the reverse of the electrical
box cover or see wiring diagram (right).
Alternative thermostats should not be used, regu-
lations require immersion heaters on unvented
cylinders to be connected with a thermal cut-out.
Recommended torque is 0,2 kp (20Nm). End ter-
minal fork width must not exceed 10 mm, see il-
lustration.
4.2 Wiring of immersion heaters
Follow the wiring instructions connecting the live,
neutral and earth as indicated in the illustration
(page 11). A dedicated permanent supply comply-
ing with current IEE regulations should be used,
and each circuit must be protected by a suitable
fuse and double pole isolating switch with a con-
tact separation of at least 3 mm in both poles.
All cables should comply with BS6141 table 8
HOFR 85c. IEE wiring regulations must be fol-
lowed throughout.
All internal wiring is factory mounted. Each im-
mersion heater has a working thermostat adjust-
able between 40°C - 70°C.
A safety cut-out is also incorporated within the
thermostat and will operate at 85°C ± 3°C. Should
this happen, check reasons for thermal cut-out
button being released and when satisified press
the reset button. Important: Before resetting the
safety cut-out or altering the thermostat setting,
isolate electrical supply to the unit prior to remov-
al of the lid. Ensure the lid to the electrical box is
replaced correctly and the retaining screw is fitted.
4.3 Electrical connections
The OSO Ecoline SCE is provided with two chan-
nels in the base to lay electrical cables to the cyl-
inder. The channels run diagonally from the front
centre to the rear left and right, and allow the in-
stallation to be neat with minimum visible cabling.
The immersion heater cable must be connected
to a minimum 16 amp dedicated permanent sup-
ply complying with current IET Wiring regulations,
isolation is required via a minimum 20 amp dou-
ble pole isolation switch with a minimum 3 mm
MAX
10 mm

11
R
E
S
E
T
R
E
S
E
T
M2
1
2
3
4
TH E RM - O - D I S C
1
2
R
E
S
E
T
R
E
S
E
T
M2
1
2
3
4
TH E RM - O - D I S C
1
2
Cable
clamp
Element
L N
Immersion
thermostat
Switched
live
Live
feed
Y-plan
terminal
Cylinder
thermostat
separation required. All electrical wiring should
be carried out by a competent electrician, using
a heat resistant Flexible cable (minimum 90°C),
and be in accordance with the latest IET Wiring
Regulations.
Immersion Heater rating is 230V x 2,8 kW.
4.4 System wiring
Motorised valve:
To comply with regulations gov-
erning the installation of indirect unvented cylin-
ders, a motorised valve must be fitted in the pri-
mary pipework.
Your OSO unit has been supplied with a two port
motorised valve, which will act as a positive en-
ergy cut-out should the safety cut-out operate.
The motorised valve will also control the tempera-
ture of the domestic stored water via the cylinder
thermostat, which is located in the electrical box.
The unit should be installed on an “S” or “Y” plan
system.
Please follow the wiring instructions carefully.
The working thermostat which controls the tem-
perature of the domestic hot water is adjustable
between 40°C - 70°C. A safety cut out is also in-
corporated within the thermostat and will oper-
ate at 85°C ± 3°C. Should the safety cut out be
brought into operation, the motorised valve will
operate and close down the primary flow to the
cylinder. To reset the safety cut-out and the mo-
torised valve the reset button must be pressed in.
If using a 6-wire 28mm or 1” BSP V4043H on ei-
ther circuit the white wire is not needed and must
be made electrically safe.

12
4.5 S plan wiring layout
R
E
S
E
T
R
E
S
E
T
M2
1
2
3
4
R
E
S
E
T
R
E
S
E
T
M2
1
2
3
4
TH E RM - O - D I S C
1 2
E
231
T6360B
B1BrG O
G/Y
3 5 7
HW/onH/onNL ENL ENL
Boiler Pump
321 32 32
2 2 31
V4043H
Zone Valve (DHW)
(supplied)
IMMERSION
thermostat
CYLINDER
thermostat
Isolated Mains
Supply From
Fused Spur
L N E
Zone Valve (Htg)
(not supplied)
Room
thermostat
6 9
B1BrG O
G/Y
2 31
V4043H
4 8 10
L N
Terminal for
Y plan system
2 Port V alv e
(supplied)
Pump
flow
A uto-
matic
bypass

13
R
E
S
E
T
R
E
S
E
T
M2
1
2
3
4
R
E
S
E
T
R
E
S
E
T
M2
1
2
3
4
TH E RM - O - D I S C
1 2
E
231
T6360B
B1OG Br
G/Y
3
HW/on HW/offH/onNL ENL ENL
Boiler Pump
321 32 32
2 2 31
V4043H
Room
thermostat
Zone Valve (DHW)
(supplied)
IMMERSION
thermostat
CYLINDER
thermostat
Isolated Mains
Supply From
Fused Spur
L N E
Mid Position Valve
(not supplied)
6
WB1 G/Y Gr O
23
V4073A1039
10
L N
4 5 987
4.6 Y plan wiring layout
2 Port V alv e
(supplied)
M id
Position
V alv e
(not supplied)
Pump
flow
A utomatic bypass
A Honeywell 10 way Junction
box must be used in a Y-plan
system. No other wiring centre
is acceptable.

14
5. SAFETY AND SERVICING
Maintenance must be carried out by a com-
petent person.
5.1 Safety cut out
1. The safety cut-out operates if:
a. Wiring is incorrect.
b. The immersion heater thermostat or
cylinder thermostat fails.
2. Remember before resetting the safety cut-
out or altering the thermostat setting, isolate
electrical supply to the unit prior to removal
of the electrical box lid
3. Reduce thermostat setting an press the reset
button. After adjustments are completed,
ensure the lid to the electrical box is replaced
correctly and the retaining screw is fitted
4. If still out of operation, contact installer.
5.2 Intermittent discharge from tundish
1. Turn off the electrical supply to the immer-
sion heater.
2. Turn off cold water supply valve.
3. Open a hot tap.
4. Turn the knob (K) on the Temperature and
Pressure Relief Valve to the left and hold in
this position for 30 seconds (see below).
5. Check pre-charge on vessel and adjust
pressure if necessary.
6. Open cold water supply valve.
7. When water flows through open tap, close
tap. Turn on electrical supply to the immer-
sion heaters.
5.3 Continous very hot water discharge from
tundish
This indicates a malfunction of a thermal cut-out,
operating thermostat or the combined tempera-
ture and pressure relief valve. Turn off the electri-
cal supply to the immersion heater and also iso-
late an indirect unit from the boiler. Contact the
installer or competent engineer.
5.4 Expansion vessel maintenance
The expansion vessels require annual mainte-
nance by a competent person and the precharge
pressure must be restored to the original value.
An annual visual inspection is recommended.
Important: to check the precharge the expansion
vessel must be completely empty of water. if the
pressure is different from the value shown on the
label it must be restored to the original value.
Do not remove expansion vessel without depres-
surising the cylinder and draining 10 litres of wa-
ter from the drain valve at the base of the cylinder
5.5 Warranty
Cylinder should be serviced annually (as below)
and logbook should be updated in order to vali-
date warranty. Logbook and service records act
as warranty document. For terms of warranty see
Service logbook at rear of manual.
5.6 Service procedure
The following maintenance work has to be car-
ried out annually by a competent person:
1. Inspection of pressure/temperature relief
valve and expansion relief valve.
2. Manually operate each valve by twisting the
operating cap, and check if water flows un-
obstructed via the tundish to the discharge
point.
3. Ensure that both valves re-seat satisfactorily.
4. Turn off mains water supply and open near-
est hot water tap to depressurise the DHW
system.
5. Check the expansion vessel.
6. If the pressure is below 3 bar, top up with
a suitable air pressure pump to pressure
shown on vessel label.
7. Complete the service section of Benchmark/
Cylinder Commissioning Checklist included
in the inside back pages of these instruc-
tions.
8. Remove , clean and replace line strainer.
9. The immersion heater element must be
removed for inspection on service after 5
years. The threads must be checked for cor-
rosion. If signs of corrosion are evident, the
element must be replaced. Subsequently
the element must be removed and exam-
ined every 3 years. Failure to do so in ar-
eas of aggressive water may result in the
element separating from the cylinder with
consequential escape of water.
10. Visual inspection of all valves, external fit-
tings, immersion heaters and electrical con-
nections.
K

15
5.7
Discharge
Discharge pipes must be metal or suitably temper-
ature rated as defined by G3 building Regulations.
The pipe should have a continuous fall and should
terminate in a safe and visible place.
Downward discharges at low level, i.e. up to 100
mm above external surfaces such as car parks, hard
standings, grassed areas etc. are acceptable pro-
viding that where children may play or otherwise
come into contact with discharges, a wire cage
or similar guard is positioned to prevent contact,
whilst maintaining visibility. Discharge at high level,
i.e. into a metal hopper and metal down pipe with
Valve Outlet size
Minimum size
of discharge
pipe D1
Minimum size of
discharge pipe D2
from tundish
Maximum resistance allowed
expressed as a length of straight
pipe (i.e. no elbown or bends)
Resistance created by each
elbow or bend
G 1/2 15 mm
22 mm
28 mm
35 mm
up to 9 m
up to 18 m
up to 27 m
0.8 m
1.0 m
1.4 m
G 3/4 22 mm
28 mm
35 mm
42 mm
up to 9 m
up to 18 m
up to 27 m
1.0 m
1.4 m
1.7 m
G 1 28 mm
35 mm
42 mm
54 mm
up to 9 m
up to 18 m
up to 27 m
1.4 m
1.7 m
2.3 m
the end of the discharge pipe clearly visible (tundish
visible or not) or onto a roof capable of withstand-
ing high temperature discharges of water and 3 m
from any plastics guttering system that would col-
lect such discharges (tundish visible).
Where a single common discharge pipe serves
more than one system, it should be at least one
pipe size larger than the largest individual dis-
charge pipe (D2) to be connected.
For further information contact your Building
Control Office.
S afety dev ice
(e.g. temperature
relief v alv e)
M etal discharge pipe (D 1) from
temperature relief v alv e to tundish
6 0 0 mm.
maximum
Tundish
30 0 mm.
minimum
D ischarge pipe (D 2) from tundish,
with continous fall. S ee table and
worked example.
D ischarge below
fixed grating
(see text for alternativ e
points of discharge)
Fixed grating
Trapped gulley

16
6. OSO FAULT FINDING GUIDE
No water from
hot taps
Water from taps
is cold
Intermittent
water discharge
Continous
water discharge
Mains supply off
Strainer blocked
Immersion heaters
not switched on
Immersion heater
thermal cutout has
operated
Programmer set to
central heating or
not switched on
Boiler not
working
Cylinder thermal
cut-out has oper-
ated
Motorized valve
not operating cor-
rectly
Reduced expansion
vessel charge
Thermal cutout
failure (note: water
will be hot
Expansion relief
valve not working
properly
Cold water inlet
pressure reducing
valve not working
Temperature and
pressure relief valve
faulty
Check and open stopcock
Turn off water supply, remove and clean strainer
Check and switch on
Check and press reset button
Check and set to Hot water
Check boiler operation. If fault suspected consult in-
staller / boiler manufacturer
Check and press reset button
Check wiring and/or plumbing connections
to motorized valve
Follow instructions 5.2 Intermittent or slow discharge
from tundish
Switch off power to immersion heater(s). When dis-
charge has stopped check thermal controls, replace if
faulty
Check and replace if faulty
Check pressure from valve, if greater
than 3 bar - replace
Drain 10 litres from cylinder and replace valve

17
Description Unit SCE 120 SCE 150 SCE 180 SCE 210 SCE 250 SCE 300
Part number
No. 1327051 1327052 1327053 1327054 1327055 1327056
EAN number
-
7070644008260 7070644008277 7070644008284 7070644008291 7070644008307 7070644008314
Actual capacity of the water tank at 20°C
L. 109 142 163 190 239 277
Outer diameter of the tank
mm 580 580 580 580 580 580
Height of the appliance
mm 870 1050 1160 1300 1550 1750
Gross weight of the appliance
kg 42 47 52 57 64 70
Net weight of appliance once lled with sanitary water
kg 151 189 215 247 303 347
Material of tank and integrated heat exchanger
- 1.4521 1.4521 1.4521 1.4521 1.4521 1.4521
Material of element
- incoloy 825 incoloy 825 incoloy 825 incoloy 825 incoloy 825 incoloy 825
Thermal insulation material
- PUR PUR PUR PUR PUR PUR
Thermal insulation of the tank, average thickness
mm 35 35 35 35 35 35
IP classication
- 24 24 24 24 24 24
Standby heat losses / 24 hour kWh/24h
1.06 1.25 1.46 1.61 1.92 2.02
Standby heat losses
Watts 44 52 61 67 80 84
Hot water capacity(1) >40°C
L. 148 198 248 281 355 376
Heating time (coil)
min. 28 29 34 39 48 54
Reheat time (1) (70%) (coil)
min. 19 21 24 27 34 38
Primary Heating Power (1) (coil)
kW 13 16 16 17 17 17
Primary owrate for Reheat time & Primary heating power
l/h 900 900 900 900 900 900
Primary Heat exchanger pressure drop (1)
mBar 44 44 47 47 47 47
Heat up 1 element
min. 98 136 154 186 235 279
Reheat time (1) (70%) 1 element
min. 69 35 108 130 165 195
ErP class
- B B C C C C
Pressure information
Maximum design pressure of cylinder (rated pressure)
MPa/Bar 1 / 10 1 / 10 1 / 10 1 / 10 1 / 10 1 / 10
Maximum design pressure of heating coil
MPa/Bar 1 / 10 1 / 10 1 / 10 1 / 10 1 / 10 1 / 10
Operating pressure of cylinder
MPa/Bar 3333 3 3
Operating pressure of heating coil
MPa/Bar 2222 2 2
Max. operating temperature of cylinder
°C 70 70 70 70 70 70
Max. operating temperature of heating coil
°C 99 99 99 99 99 99
Expansion solution
Bar 333333
Expansion vessel capacity
L. 12 12 18 18 25 25
Heat Exchanger information
Primary heat exchanger surface area
m² 0.5 0.8 0.8 0.8 0.8 0.8
Ø int. et Ø ext.
mm/mm ø20.4 / ø22 ø20.4 / ø22 ø20.4 / ø22 ø20.4 / ø22 ø20.4 / ø22 ø20.4 / ø22
Ø int. et Ø ext.
mm/mm
N/A N/A N/A N/A N/A N/A
Hydraulic connections
Secondary return
mm N/A N/A N/A N/A N/A N/A
Primary heat exchanger ow
mm ø22 ø22 ø22 ø22 ø22 ø22
Primary heat exchanger return
mm ø22 ø22 ø22 ø22 ø22 ø22
Cold water
mm ø22 ø22 ø22 ø22 ø22 ø22
Hot water
mm ø22 ø22 ø22 ø22 ø22 ø22
Immersion heater
Inch 5/4” 5/4” 5/4” 5/4” 5/4” 5/4”
Safety valve (factory tted)
Inch 1/2” 1/2” 1/2” 1/2” 1/2” 1/2”
T&P valve (factory tted)
Inch 1/2” 1/2” 1/2” 1/2” 1/2” 1/2”
Pressure reducing valve
Inch ø22 ø22 ø22 ø22 ø22 ø22
Electrical characteristics
Supply voltage and frequency
V/Hz
230 / 50 230 / 50 230 / 50 230 / 50 230 / 50 230 / 50
Current
A
13
13 13 13 13 130
Power of the electrical resistance
W
3000
3000 3000 3000 3000 3000
Electrical installation
- IEEE regs IEEE regs IEEE regs IEEE regs IEEE regs IEEE regs
Thermostat type - cylinder
-
Surface Surface Surface Surface Surface Surface
Immersion capacity
kW
3.0kW @240V
2.8kW @230V 3.0kW @240V 2.8kW @230V 3.0kW @240V 2.8kW @230V 3.0kW @240V 2.8kW @230V 3.0kW @240V 2.8kW @230V 3.0kW @240V 2.8kW @230V
Immersion Heater - Phase
Phase single single single single single single
Immersion heater - Voltage / Hz
Volt
230 / 50 230 / 50 230 / 50 230 / 50 230 / 50 230 / 50
Immersion thermostat - temp range
°C 40-70 40-70 40-70 40-70 40-70 40-70
Immersion thermostat - set temp
°C 060 60 60 60 60
Indirect thermostat - temp range
°C 40-70 40-70 40-70 40-70 40-70 40-70
Indirect thermostat - set temp
°C 60 60 60 60 60 60
Safety
Safety valve opening pressure +/- 5%
Bar 6666 6 6
T&P valve opening pressure/Temp.
Bar / °C 7 / 90 7 / 90 7 / 90 7 / 90 7 / 90 7 / 90
Safety thermostat cutout - cylinder
°C 85 85 85 85 85 85
Safety thermostat cutout - immersion
°C 85 85 85 85 85 85
Packaging
Width of box
mm 595 595 595 595 595 595
Depth of box
mm 595 595 595 595 595 595
Height of box
mm 895 1075 1185 1325 1875 1775
Weight of box
Kg. 45 50 55 60 68 74
Technical data - Ecoline SCE
7. TECHNICAL AND PERFORMANCE SPECIFICATIONS

18
NOTES

19
The code of practice for the installation,
commissioning & servicing of mains pressure hot water storage
Installation,Commissioning
and Service Record Log Book
CUSTOMER DETAILS
NAME
ADDRESS TEL No.
IMPORTANT
1. Please, keep the Log Book in a safe place for future reference.
2. This Log Book is to be completed in full by the competent person(s) who
commissioned the equipment and then handed to the customer. When this is done,
the Log Book is a commissioning certicate that can be accepted as evidence of
compliance with the appropriate Building Regulations.
3. Failure to install and commission this appliance to the manufacturer’s
instructions may invalidate the guarantee.
The above does not a󰀨ect your statutory rights.
For full details on the HWA charter please visit http://www.hotwater.org.uk/
© HEATING AND HOTWATER INFORMATION COUNCIL
IT IS THE RESPONSIBILITY OF THE INSTALLER TO COMPLETE THIS
LOG BOOK AND PASS IT ON TO THE CUSTOMER. FAILURE TO DO
SO MAY INVALIDATE THE CYLINDER GUARANTEE
HWA charter members agree to:
• To supply t for purpose products clearly and honestly described
• To supply products that meet, or exceed appropriate standards and building and water regulations
• To provide pre and post sales technical support
• To provide clear and concise warranty details to customers

20
INSTALLER & COMMISSIONING ENGINEER DETAILS
INSTALLER DETAILS
COMPANY NAME DATE
ADDRESS
INSTALLER NAME TEL No.
REGISTERED OPERATIVE ID CARD No.
(IF APPLICABLE)
REGISTRATION DETAILS
COMMISSIONING ENGINEER (IF DIFFERENT)
NAME DATE
ADDRESS
TEL No.
REGISTERED OPERATIVE ID CARD No.
(IF APPLICABLE)
REGISTRATION DETAILS
IT IS THE RESPONSIBILITY OF THE INSTALLER TO COMPLETE THIS LOGBOOK AND PASS IT
ON TO THE CUSTOMER. FAILURE TO DO SO MAY INVALIDATE THE CYLINDER GUARANTEE
APPLIANCE & TIME CONTROL DETAILS
MANUFACTURER OSO HOTWATER (UK) MODEL
CAPACITY
TYPE
TIME CONTROL UNVENTED PROGRAMMER
litres MANUFACTURE date
TIME SWITCH
or