HAMWORTHY HEATING LTD
20
FLEET W series
500001211/F
5.3.2
Flue installations can be configured to suit a number of applications, see Appendix C, but must comply with one of the
following options:
Room
Sealed.
Type C13: Horizontal balanced flue.
Type C33: Vertical balanced flue.
Type C53: Separate intake and discharge ducts terminating in different pressure zones.
Open
Flue.
Type B23: Intake from ventilated plant room and discharge via horizontal/vertical flue.
For room sealed applications, the flue ducts must be supplied by HHL.
For open flued applications the HHL supplied boiler connection kit MUST be used.
It is important that horizontal flue terminal discharges are positioned in accordance with the requirements detailed
in Figure 4.3.2.
In the case of twin duct applications (C53), air supply inlets must be positioned at least 300 mm from flue
terminals to prevent flue gas re-circulation. Hamworthy Heating recommend that flue terminals discharges are
positioned higher than air inlets.
To comply with the requirements of the Clean Air Act 1956 a maximum of 150 kW may be terminated with
horizontal flue discharges.
Equivalent lengths for 90° bends and 45° bends are given in Appendix C.
5.4 Electrical Connections:
The following electrical connections are provided on each module.
Supply: Live, Neutral and Earth. See Section 4.5 for details.
Supply Input for Boiler Fault and Normal Run Signals
Boiler General Fault Alarm Signal Output
Boiler Normal Run Signal Output
0-10v Analogue Control Signal Input
Remote on/off Control Input
Boiler Shunt Pump Output
Safety Interlock Circuit Input
Optional LPB Bus for use with Merley boiler sequence control
6.0 PRE-COMMISSIONING
The following pre-commissioning check must be carried out before the boiler is commissioned.
6.1 Gas Supply.
Ensure that gas installation pipe work and meter has been soundness tested and purged to IGE/UP/1 or IGE/
UP/1A as appropriate. Test and purge certificates should be available for viewing.
6.2 Ventilation
Ensure that ventilation and air supply to plant room is correct.
6.3 Pipe work, Valves and Pump
Ensure that;
System flushing and suitable water treatment has been implemented
Pipe work and valve arrangement is installed to Hamworthy Heating recommendations.
Circulating system is full of water, vented and pressurised appropriately.
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