HAMWORTHY HEATING LTD
1
Wessex ModuMax
mk3
Boilers
500001308/C
1.0
INTRODUCTION
1.1 This boiler must be installed by a competent person.
1.1.2 All installations
MUST
conform to the relevant Gas Safety and Building Regulations.
1.1.3 Health & Safety requirements must also be taken into account when installing any equipment.
1.1.4 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) I
2H
or LPG Propane (3rd Family) I
3P
1.2.1 The information relating to Natural Gas & Propane firing is to be found in Appendix ‘A’.
1.2.2 Boilers
MUST NOT
use gas other than that for which they are designed and adjusted.
1.2.3 Regulatory disposal and proper recycling of this product can prevent damage to the environment and health risks.
a)
For the disposal of the product and the component parts, the services of an accredited waste disposal company should
be used.
b)
For more information on waste disposal/management, contact the local authority responsible for waste management or
the point of sale where the product was purchased.
1.3 The Wessex ModuMax is a gas fired, fully modulating, condensing, fan assisted, open flued central heating / hot water
boiler. Using the latest gas / air ratio control technology it is able to provide clean efficient operation across a large output
range.
1.3.1 The boiler can be supplied in a modular format, a maximum of three vertically stacked modules being arranged into a
single unit sharing a common flue.
1.3.2 Each boiler module utilises a metal fibre, fan assisted, pre
-
mix burner.
1.3.3 Operation is initiated and controlled by a Navistem boiler management system with a user interface LCD display for
accessing and changing boiler parameters.
1.3.4 Each of the boiler models is designed for direct connection to a flue system. The Technical Data for the various
arrangements is given in Appendix ‘C’
.
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 may
be required for some installations.
1.3.5 The Wessex ModuMax is floor mounted and is intended for the heating of Commercial and Industrial premises.
It may also be used to supply hot water for these premises via an indirect cylinder.
1.3.6 The Wessex ModuMax has a low water content and water flow rates
MUST
be maintained at or above the
recommended levels shown in Appendix ’E’.
1.4 If the boiler is to be connected to an un
-
vented (pressurised) heating system, 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.
1.4.1 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.
1.4.2 Consideration should also be given to the maximum working pressure of the boiler as given in Appendix ’E’.
Consult Hamworthy Heating Technical Department for help or assistance if in doubt.
1.5 The Wessex ModuMax boiler is not suitable for direct connection to domestic hot water supplies.
1.6 The Wessex ModuMax boiler can be installed with reverse return water flow, (optional HHL pipe kits available) requiring
a primary circuit pump and low loss header, or with individual module shunt pumps or electrical isolating valves (not HHL
supply)
See Appendix ‘E’, figure E1.1 for typical schematic layouts
