Glow-worm Flexicom sx - Manual (Page 14)

0020107231_04 - 12/14 - Glow-worm
INSTALLATION
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5 Water Systems - General
5.1 General
This boiler is designed to provide central heating from a fully
pumped sealed water system and domestic water using a fully
indirect vented or unvented cylinder. The pump, expansion
vessel and associated safety devices are all fitted within the
boiler.
5.2 Draining Points
Draining taps must be provided at all low points of the system,
which will allow the entire system to be drained.
Draining taps shall be to the current issue of BS2879.
Drain points for the appliance are provided at the positions
shown in diagram 5.5.
Diagram 5.2
13102
5.3 Flow Rate
If it is necessary to alter the flow rate, the system can be fitted
with a lockable balancing valve in the main flow or return pipes
shown as valve “A” in diagram 5.1. The flow rate through the
boiler must not be allowed to fall below that given in section 1 -
Specification Table.
5.4 Bypass
The boiler is fitted with an automatic bypass.
The pump remaining conveying capacity is shown in diagram
5.2
Ensure that under no circumstances does the flow rate drop
below the figure specified, refer to section 1 - Specification
Table.
DRAIN POINTS
Diagram 5.1
13942