Glow-worm Ultracom2 sxi - Manual (Page 16)

0020092785_02 - 05/10 - Glow-worm
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8.2 Safety Discharge Valve
B
A
3
4
2
1
Key
1 Compression fitting
2 PRV pipe
3 Pipe for PRV
4 Draining outlet
A PRV outlet - to outside
b Appliance drain tap
This must be extended, using not less than 15mm o.d. pipe,
to discharge, in a visible position, outside the building, facing
downwards, preferably over a drain.
To ease future servicing it is advisable to use a compression
type fitting to extend the safety discharge valve tube.
The pipe must have a continuous fall and be routed to a
position so that any discharge of water, possibly boiling,
or steam cannot create any danger to persons, damage to
property or external electrical components and wiring.
8.3 Connection to the condensate trap
a Condensate produced by the appliance is mildly
acidic (pH 3.5 - 5.0). Use protective gloves
b Condensate must only be discharged in
accordance with these instructions.
i The volume of condensates evacuated can reach
about 15 litres per day for a detached house. This
volume is negligible compared to the volume of
waste water discharged by a house, because the
condensates are diluted in this water.
• Refer to BS5546 or BS6798 for advice on disposal of boiler
condensate.
1
Key
1 Condensate pipe
• Make sure there is no protective plug fitted.
• Connect the condensate pipe (1).
i The pipe should have a fall of a least 2.5° 44mm/
metre away from the boiler.
Condensate should, if possible be discharged into the
household internal drainage system.
• If this is not practicable, discharge can be allowed into the
external household drains or a purpose designed soak away,
refer to diagram overleaf.
It is recommended that any external condensate drain pipe is
protected and also preferably of 32mm diameter, to prevent
freezing in adverse weather conditions.
• Always ensure the pipe is installed with the correct fall
• Use 21.5mm plastic pipe to connect to the condensate
outlet - do not use metal pipes. It is permissible to use a
condensate neutraliser providing that it is checked for correct
operation.
INSTALLATION