Bosch SSB255 - Product Description

6720818454 (2016/02) US SSB
4 | Product description
NOTICE:
► This boiler must be installed by a licensed contractor/ gas tter.
Failure to do so shall void the product warranty.
► The boiler is intended only for the use for which it was specically
designed and built. Bosch is hereby excluded from any liability for
damages caused to persons, animals or property resulting from
installation errors, improper adjustment, maintenance or use.
► In order to ensure safety and correct operation, the installation shall
always take place in full compliance with the applicable codes and
following with the instructions provided by the manufacturer, and must
always be carried out by a licensed contractor / gas tter only.
► The equipment must be installed in appropriate place and in
combination with appropriate systems as specied by code.
► The unit may be exposed to temperatures between 5 deg F (-15°C)
and 150 deg F (65°C) in its original packaging. Do not expose the
unit to weather without the protection of the original packaging until
the boiler has been properly installed. Until then there is no frost
protection for the boiler.
► After removing the packaging check the integrity and completeness of
delivery and in case of non-compliance, contact your dealer.
► If there is a water loss, disconnect the boiler from the main power
supply, close the water supply and immediately call technical
assistance or installer/local contractor.
► Periodically check that the condensate drain is free from obstruction.
► Periodically check the system pressure. System pressure should be
checked when the system is in standby mode and no call for heat is
present.
► Maintenance is mandatory and shall be carried out at least once a
year.
► This manual shall be read carefully, in order to install and operate the
boiler appropriately, and safely.
► Boiler installations, settings and service should only be performed by
experienced licensed contractor / gas tter. End Users should only
make adjustments with the assistance of a licensed contractor / gas
tter.
► Any maintenance operation or service before disconnecting the boiler
from the main power supply is forbidden.
► Do not remove or modify safety equipment.
► Do not pull or twist the electrical wires, from the boiler, even if the
device is disconnected from the main power supply.
► Do not obstruct or reduce the ventilation openings.
► Do not install the unit outdoors.
► Do not leave any combustibles or containers of ammable substances
in the room where the boiler is installed.
► Keep packing material out of reach of children as it can be potentially
dangerous. It must be disposed of as required by law.
► The opening of metal casing of the device and removing of the cover
are prohibited to the end user. Any service on the boiler must be
carried out by authorized personal.
► It’s prohibited to dispose the product as domestic waste. The
separate disposal of a household appliance avoids possible negative
consequences for the environment and human health deriving from
inappropriate disposal and allows to recover the materials it is made
of in order to achieve signicant savings in energy and resources.
2 Product description
2.1 Introduction
• The gas-red condensing SSB boilers are designed to be used in
central heating systems. Any other use is prohibited.
• This boiler can be connected to an indirect storage tank for the
production of domestic hot water.
• There are several options for venting including single pipe, two pipe
and concentric see section “4.7 Venting and air piping system” for
details.
• The quality of the system water is very important. Poor water quality
can damage heating systems and boilers due to scale formation and
corrosion (see water quality section).
• The boilers can also function directly with any hydronic emitter.
When installing the boiler and system connections, the installer must
consider the total head loss and ow rates in order to adequately size
piping and circulator pumps.
• The SSB boiler can be connected to a room thermostat.
• An outdoor air temperature sensor must also be connected to the
boiler for an outdoor reset supply temperature control for increased
fuel efciency and comfort.
2.2 Scope of delivery
Fig. 1 Scope of delivery
Component Qty Packaging method
[1] Gas condensing boiler 1 Pallet
[2] Set of documents for
appliance
1 Plastic package
[3] Safety relief valve 1 Cardboard box on pallet
[4] LP conversion kit 1 Plastic package
[5] Universal Sensor for LLH
or DHW
2 Cardboard box on pallet
[6] Outdoor sensor 1 Cardboard box on pallet
6.75
6
.5
1
2
3
4
5
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