Hamworthy Sherborne Series, Installation, Commissioning And Service Manual

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HAMWORTHY HEATING LTD
SHERBORNE 500001103/E
1.0 INTRODUCTION
1.1 This boiler must be installed by a competent person
holding ' CORGI ' registration or equivalent. All
installations MUST conform to the relevant Gas Safety
and Building Regulations. Health & Safety
requirements must also be taken into account when
installing any equipment. Failure to comply with the
above may lead to prosecution.
1.2 This boiler is intended for use on Group H Natural
Gas (2nd Family) and LPG-Propane (3rd Family). The
information relating to propane firing is to be found in
Appendix ‘A’. Boilers
MUST NOT use gas other than
that for which they are designed and adjusted. The
boiler
MUST only be used on a governed supply.
1.3 The Sherborne range of boilers consists of two
models;
Sherborne S65 - a
high efficiency , gas fired, fully
modulating, wall mounted room sealed central heating/
hot water boiler with an output of 13.6 - 64kW.;
Sherborne S70
c - a condensing , gas fired, fully
modulating, wall mounted room sealed central heating/
hot water boiler with an output of 13.6 - 71.3kW
1.3.1 The burner fitted to the boiler is of the fan assisted
pre-mix type. Operation is initiated by a full sequence
ignition control that incorporates a Hot Surface Ignition
system and rectification supervision of the flame across
the range of outputs.
1.3.2 The boiler is designed for direct connection to a
room sealed or conventional flue system - HHL
supply. The Technical Data for the various flue
arrangements is given in Section 2. The flue outlets
from more than one unit may be connected to a single
chimney. No draught diverter is fitted to the boiler nor is
a fixed diverter required in the flue system. However a
draught stabiliser is recommended for some
installations.
1.3.3 The Sherborne range of boilers can be wall or
frame mounted and are intended for the heating of
Commercial / Industrial premises. It may also be used
to supply hot water for premises via an indirect cylinder.
1.3.4
The Sherborne range of boilers has a low water
content and water flow rates MUST be maintained at or
above the recommended levels shown in
Section 8
and Figure 2.2.
1.4 The boiler is suitable for connection to open vented
fully pumped systems and un-vented (pressurised)
heating systems. On un-vented systems, care must be
taken to ensure all extra safety requirements are
satisfied and that the relevant interlocks will shut the
boiler(s) off should a high or low pressure fault occur.
Note: The boiler is not suitable for direct connection to
domestic hot water supplies or gravity circulation
systems.
The pressurisation unit must also incorporate a low
level water switch which protects the water pumps, and
will directly or indirectly shut down the boiler plant
should a low water condition occur. Consideration
should also be given to the maximum working pressure
of the boiler as given in Section 2: TECHNICAL DATA.
Consult Hamworthy Heating Technical Department for
help or assistance if in doubt.
1.5 The Sherborne range of boilers can be installed in
banks of up-to three units with either reverse return
water flow, (optional kits available) or with single pipe
headers, (non HHL supply). See Figure 1.1. for
typical
schematic layout . – illustrative only.
The Hamworthy preferred system configuration is to
run a ‘Primary Loop’ circuit thus preventing changes in
system performance affecting flow rates through boiler
(s).
For installations of more than three units in a single
bank, consult Hamworthy Heating Technical
Department for help or assistance.
1.6
The boiler is supplied in four packages.
- boiler assembly
- accessory pack assembly
- control panel
- flue assembly
1.7 Options
1.7.1
Boiler sequencer kit for timed remote control of
single and multiple boilers with external compensation
and separate domestic hot water and space heating
zone control. Refer to individual kit instructions for
details.
1.7.1.1 External air temperature sensor
1.7.1.2 Internal room temperature sensor
1.7.2 Flue kits (see Section 6.1)
1.7.3 Mounting frames are available for single, double
and triple bank configuration. For installations of more
than three units in a single bank, consult Hamworthy
Heating Technical Department for help or assistance.
1.7.4
Optional reverse return header kits are available
for double and triple bank configuration. These kits are
wall/frame mounted, allowing installation to the system
prior to installing the boiler and can incorporate all
necessary valves, inter connecting pipework, and
flexible flow and return connections. Refer to individual
kit instructions for details.
1.7.5 Sequencing Interface Module - Hamworthy
Heating can supply an interface module fitted within the
boiler control panel to enable the remote fully
modulating control of the boiler via a 0-10V analogue
control signal from a non-HHL control system. An
interface module will be required for each boiler, and a
0-10V control signal will be required for each boiler.
Refer to sections 8.12.3 and 9.4 for further details.
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