STIEBEL ELTRON SBB 501 WP SOL Free Standing Water Heater Instruction Manual

SBB 501 WP SOL Free Standing Water Heater

OPERATION AND INSTALLATION

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OPERATION

Safety

1.2 Other symbols in this documentation

Note
General information is identified by the symbol shown
on the left.
▶ Read these texts carefully.

Symbol Meaning
Material losses
(appliance, consequential, environment)
Appliance disposal

▶  This symbol indicates that you have to do something. The action
you need to take is described step by step.
1.3 Units of measurement

Note
All measurements are given in mm unless stated otherwise.

2. Safety

2.1 Intended use

The appliance is specifically designed for heating DHW with heat
pumps.
Any other use beyond that described shall be deemed inappropriate.
Observation of these instructions is also part of the correct
use of this appliance. Any modifications or conversions to the
appliance void all warranty rights.

2.2 Safety instructions

WARNING Burns
There is a risk of scalding at outlet temperatures in excess
of 43 °C.

WARNING Injury
The appliance may be used by children aged 8 and up
and persons with reduced physical, sensory or mental
capabilities or a lack of experience provided that they
are supervised or they have been instructed on how to
use the appliance safely and have understood the resulting
risks. Children must never play with the appliance.
Children must never clean the appliance or perform user
maintenance unless they are supervised.

Note
The appliance is under pressure.
During the heating process, expansion water will drip
from the safety valve. If water continues to drip when
heating is completed, please inform your heating contractor.

2.3 Test symbols

See type plate on the appliance.

3. Appliance description

The heat from the heat pump‘s heating water is transferred to the
DHW by smooth-tube indirect coil.
The internal steel cylinder is coated in “anticor®” enamel and
is equipped with a thermometer and a signal anode. The anode
with consumption indicator protects the internal cylinder from
corrosion.
SBB 401 WP SOL | SBB 501 WP SOL
These appliances are also equipped with a second indirect coil for
DHW heating with solar energy.

www.stiebel-eltron.com SBB 301-501 WP SOL | 15

4. Cleaning, care and maintenance

▶  Have the function of the safety assembly and electrical safety
of the fitted accessories regularly checked by a qualified
contractor.
▶  Never use abrasive or corrosive cleaning agents. A damp
cloth is sufficient for cleaning the appliance.

4.1 Signal anode consumption indicator

▶  Material losses
If the consumption indicator changes colour from white to
red, have the signal anode checked by a heating contractor
and if necessary replaced.

OPERATION

Cleaning, care and maintenance

1. Signal anode consumption indicator
2. white = anode OK
3. Red = check by heating contractor required

4.2 Scaling

▶  Almost every type of water deposits limescale at high temperatures.
This settles inside the appliance and affects both
the performance and service life. If a flanged immersion
heater is installed, the heating elements must be descaled
from time to time. A heating contractor who knows the local
water quality will tell you when the next service is due.
▶  Check the taps/valves regularly. You can remove limescale
deposits at the tap outlets using commercially available descaling
agents.

5. Troubleshooting

Telephone your contractor.
To facilitate and speed up your enquiry, please provide the serial
number from the type plate (000000-0000-000000):

INSTALLATION

Safety

INSTALLATION

6. Safety

Only a qualified contractor should carry out installation, commissioning,
maintenance and repair of the appliance.

6.1 General safety instructions

We guarantee trouble-free operation and operational reliability
only if the original accessories and spare parts intended for the
appliance are used.

6.2 Regulations, standards and instructions

Note
Observe all applicable national and regional regulations
and instructions.

6.3 Water installation

6.3.1 Cold water line

Steel or copper pipes or plastic pipework are approved materials.
A safety valve is required.

6.3.2 DHW line

Copper, stainless steel or plastic pipework are approved materials.

Material losses
If a flanged immersion heater is fitted and plastic pipework
systems are used at the same time, observe the
maximum permissible temperature / the maximum permissible
pressure in chapter “Specification / Data table”.

Operate the appliance only with pressure-tested taps and valves.

7. Appliance description

7.1 Standard delivery

Delivered with the appliance:
– Cold water inlet pipe with flat gasket
– Adhesive rosettes for connecting lines
– Adjustable feet
– Fixing straps with closure element
– Thermometer (in its delivered condition located in the DHW outlet)
– Adaptor with flat gasket for connecting a DHW circulation line

7.2 Accessories

Depending on the static pressure, safety assemblies and pressure
reducing valves are available. These type-tested safety assemblies
protect the appliance against unacceptable excess pressure.
If it is not possible to fit an anode rod from above, install a segmented
signal anode.
Flanged immersion heaters are available as accessories.

8. Preparations

8.1 Installation site

Always install the appliance in a room free from the risk of frost
and near the draw-off point.

▶  Use the adjustable feet to compensate for any unevenness in
the floor.

Minimum clearances

▶  Maintain the minimum clearances.

INSTALLATION

Preparing for installation

8.2 Transport

Material losses
We recommend removing the cylinder casing for transportation
to the installation location to prevent it from
becoming dirty or damaged.

SBB 501 WP SOL
▶  Both side insulation sections can be removed for transportation
in tight spaces. To do this, remove the cylinder casing.

▶  Use the fixing straps to refit the thermal insulation sections
after transportation.

1 Side thermal insulation section
▶  Ensure that the closures are in the joint between a side
thermal insulation section and the thermal insulation of the
cylinder.

9. Preparing for installation

9.1 Removing / fitting the cylinder casing

Note
Open or remove the cylinder casing before fitting the DHW
circulation and indirect coil lines.
Fit the cylinder casing before fitting a flanged immersion heater.
The plinth trim should be fitted after the tightness check.

9.2 Checking the signal anode

Material losses
The appliance must not be operated without a consumption
indicator or with a damaged one, otherwise water
will leak out once the anode is depleted.

9.3 Heating installation

▶  Flush the indirect coils with water before connecting the
heating water pipes.

SBB 401 WP SOL | SBB 501 WP SOL without solar installation
▶  You may connect both indirect coils to the “heat pump heating
return” and “solar flow” (see chapter “Specification / Dimensions and connections”).

9.3.1 Water quality, solar circuit

A glycol/water mixture of up to 60 % is permitted for the indirect
coil in the solar circuit if only dezincification-resistant metals,
glycol-resistant gaskets and diaphragm expansion vessels suitable
for glycol are used throughout the installation.

9.3.2 Oxygen diffusion

Material losses
Avoid open heating systems and plastic pipes in underfloor
heating systems which are permeable to oxygen.

In underfloor heating systems with plastic pipes that are permeable
to oxygen and in open vented heating systems, oxygen
diffusion may lead to corrosion on the steel components of the
heating system (e.g. on the indirect coil of the DHW cylinder, on
buffer cylinders, steel heating elements or steel pipes).

Material losses
The products of corrosion (e.g. rusty sludge) can settle in
the heating system components and can result in a lower
output or fault shutdowns due to reduced cross-sections.

INSTALLATION

Commissioning

9.4 Fitting the water connection and the safety assembly

Note
Carry out all water connection and installation work in
accordance with regulations.

▶  Flush the line thoroughly.
▶  A DHW circulation line can be fitted to the “DHW circulation”
connection (see chapter “Specification / Dimensions and connections”).
Insert the adaptor supplied with flat gasket and
an extension.
▶ Connect the DHW outlet and the cold water inlet lines with
the safety assembly. Bear in mind that, depending on the
static pressure, you may also need a pressure reducing valve.

1 Cold water connection
2 Cold water inlet pipe
▶ Connect the cold water supply directly to the cylinder or with
the connecting pipe routed between the cylinder feet.
▶ During fitting, counter hold the fitting with an open-ended spanner (size 36).
▶ Check the rigidity of the connecting pipe and secure it further if required.
▶ Size the drain so that water can drain off unimpeded when
the safety valve is fully opened. The blow-off aperture of the
safety valve must remain open to the atmosphere.
▶ Fit the blow-off line of the safety assembly with a constant slope.
▶ Observe the information in the installation instructions of the safety assembly.

9.5 Fitting the thermometer and DHW sensor

1 Thermometer
▶ Insert the thermometer as far as it will go and align it.
▶ Insert the DHW sensor into the upper “Sensor heat pump
DHW” sensor well (recommended position for energy saving).
For higher levels of DHW convenience, you can alternatively
insert the DHW sensor into the lower “Sensor heat
pump DHW optional” sensor well (higher energy demand).

10. Commissioning

▶ Open a downstream draw-off point until the appliance has
filled up and the pipes are free of air.
▶ Vent the indirect coils after filling the heat pump system.
▶ Fit the accessories and check them if necessary.
▶ Check the function of the safety valve.
▶ Check that the DHW temperature on the heat pump control
unit is displayed correctly.

10.1 Appliance handover

▶ Explain the appliance function to users and familiarize them
with its operation.
▶ Make users aware of potential dangers, especially the risk of
scalding.
▶ Hand over these instructions.

11. Shutting down

▶ Disconnect the appliance from the mains at the MCB/fuse in the fuse box.
▶ Drain the appliance. See chapter “Maintenance / Draining the appliance”.

12. Troubleshooting

12.1 Fault table

Fault The safety valve drips
when the heating is
switched off.

Cause The valve seat is contaminated.

Remedy Clean the valve seat.

INSTALLATION

Maintenance

13. Maintenance

WARNING Electrocution
Carry out all electrical connection and installation work
in accordance with relevant regulations.

If you need to drain the appliance, observe chapter “Draining the
appliance”.

13.1 Checking the safety valve

▶ Regularly vent the safety valve on the safety assembly until a
full water jet is discharged.

13.2 Draining the appliance

WARNING Burns
Hot water may escape during the draining process.

If the cylinder needs to be drained for maintenance or to protect
the whole installation when there is a risk of frost, proceed as
follows:
▶ Close the shut-off valve in the cold water line.
▶ Open the hot water taps on all draw-off points.
▶ Drain the appliance via the drain valve of the safety assembly.

13.3 Replacing the signal anode

▶ Replace the signal anode if it becomes depleted. Ensure
there is a good connection between the anode and the cylinder
(maximum permissible transition resistance 0.3 Ω).

13.4 Cleaning and descaling the appliance

1 Threaded extraction holes
▶ Use the threaded lift-off holes to release the flange plate
from the flange connector.
For the torque of the flange screws, see chapter “Specification /
Dimensions and connections”.
▶ Never use descaling pumps.
▶ Never treat the cylinder surface or the signal anode with descaling
agents.

14. Specification

14.1 Dimensions and connections
SBB 301 WP

INSTALLATION

Specification

c01 Cold water inlet Male thread G 1 A G 1 A
c03 Cold water inlet pipe Male thread G 1 A G 1 A
Torque Nm 100 100
c06 DHW outlet Male thread G 1 A G 1 A
c10 DHW circulation Male thread G 1/2 A G 1/2 A
d07 Heat pump heating flow Female thread G 1 1/2 G 1 1/2
d08 Heat pump heating return Female thread G 1 1/2 G 1 1/2
h05 Sensor heat pump DHW Diameter mm 9.5 9.5
h06 Sensor heat pump DHW optional Diameter mm 9.5 9.5
h43 Thermometer Diameter mm 9.5 9.5
i01 Flange Diameter mm 210 210
Pitch circle diameter mm 180 180
Screws M 12 M 12
Torque Nm 55 55
i07 Electric emergency/booster heater Female thread G 1 1/2 G 1 1/2
i18 Protective anode Female thread G 1 1/4 G 1 1/4

INSTALLATION

Specification

SBB 401 WP SOL SBB 501 WP SOL
a23 Appliance Width excl. side insulation sections mm 690
c01 Cold water inlet Male thread G 1 A G 1 A
c03 Cold water inlet pipe Male thread G 1 A G 1 A
Torque Nm 100 100
c06 DHW outlet Male thread G 1 A G 1 A
c10 DHW circulation Male thread G 1/2 A G 1/2 A
d07 Heat pump heating flow Female thread G 1 1/2 G 1 1/2
d08 Heat pump heating return Female thread G 1 1/2 G 1 1/2
d25 Solar flow Female thread G 1 1/2 G 1 1/2
d26 Solar return Female thread G 1 1/2 G 1 1/2
h05 Sensor heat pump DHW Diameter mm 9.5 9.5
h06 Sensor heat pump DHW optional Diameter mm 9.5 9.5
h28 Sensor solar cylinder Diameter mm 9.5 9.5
h43 Thermometer Diameter mm 9.5 9.5
i01 Flange Diameter mm 210 210
Pitch circle diameter mm 180 180
Screws M 12 M 12
Torque Nm 55 55
i07 Electric emergency/booster heater Female thread G 1 1/2 G 1 1/2
i18 Protective anode Female thread G 1 1/4 G 1 1/4

INSTALLATION

Specification

SBB 501 WP SOL

14.2 Details on energy consumption

Product datasheet: Hot water storage tanks to regulation

(EU) no. 812/2013 / (S.I. 2019 No. 539 / Schedule 2)

SBB 301 WP SBB 302 WP SBB 401 WP SOL SBB 501 WP SOL
221360 221361 221362 227534
Manufacturer STIEBEL ELTRON STIEBEL ELTRON STIEBEL ELTRON STIEBEL ELTRON
Model identification of the supplier SBB 301 WP SBB 302 WP SBB 401 WP SOL SBB 501 WP SOL
Energy efficiency class C C C C

standing loss S W 88,00 88,00 100,00 100,00
storage volume V l 321 319 429 536

14.3 Specification

14.3 Specification
SBB 301 WP SBB 302 WP SBB 401 WP SOL SBB 501 WP SOL
221360 221361 221362 227534
Hydraulic data
Nominal capacity l 301 290 395 495
Capacity, upper indirect coil l 20 28.4 25.2 31.7
Capacity, lower indirect coil l 9.2 9.2
Surface area, upper indirect coil m² 3.2 4.8 4.0 5.0
Surface area, lower indirect coil m² 1.4 1.4
Pressure drop at 1.0 m³/h, upper indirect coil hPa 37 56 47 58
Pressure drop at 1.0 m³/h, lower indirect coil hPa 17 17
Mixed water volume 40 °C (15 °C/60 °C) l 529 514 681 857
Application limits
Max. permissible pressure MPa 1 1 1 1
Test pressure MPa 1.5 1.5 1.5 1.5
Max. permissible temperature °C 95 95 95 95
Max. flow rate l/min 38 38 45 50
Max. recommended collector aperture area m² 8 10
Energy data
Energy efficiency category C C C C
Standby energy consumption/24 h at 65 °C kWh 2.1 2.1 2.4 2.4
Dimensions
Height mm 1710 1710 1880 1988
Width excl. side insulation sections mm 690
Diameter mm 700 700 750 810
Height when tilted mm 1750 1750 1930 2035
Weights
Weight, full kg 445 457 595 730
Weight, empty kg 142 184 189 222

Guarantee

The guarantee conditions of our German companies do not
apply to appliances acquired outside of Germany. In countries
where our subsidiaries sell our products a guarantee can only
be issued by those subsidiaries. Such guarantee is only granted
if the subsidiary has issued its own terms of guarantee. No
other guarantee will be granted.
We shall not provide any guarantee for appliances acquired in
countries where we have no subsidiary to sell our products.
This will not affect warranties issued by any importers.

Environment and recycling

We would ask you to help protect the environment. After use,
dispose of the various materials in accordance with national
regulations.

United States of America
STIEBEL ELTRON, Inc.
17 West Street | 01088 West Hatfield MA
Tel. 0413 247-3380 | Fax 0413 247-3369
info@stiebel-eltron-usa.com
www.stiebel-eltron-usa.com

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