Condensate To Soak Away & Pressure Relief Pipework - Worcester GREENSTAR HEATSLAVE 12/18 Instruction Manual

3 - Outside wall.
1_3 Drain pipe.
4 - External drain.
16
CONDENSATE TO SOAK AWAY &
PRESSURE RELIEF PIPEWORK
UNSUITABLE FOR CLAY SOIL TYPES
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR HEATSLAVE 12/18-18/25-25/32
CONDENSATE TO SOAK AWAY &
PRESSURE RELIEF PIPEWORK
Key to diagrams continued:
16. 100mm Ø minimum plastic pipe
17. Drainage holes
18. Limestone chippings
19. Bottom of sealed tubed
CONDENSATE SOAK AWAY:
• All national and, where appropriate, local
regulations for the discharge and neutralisation of
condensate should be followed.
• The condensate drainage pipe may be run above or
below the ground to the soak away. The examples
shown on this page run above ground.
• The soak away must use a 100mm Ø plastic tube
with two rows of three 12mm holes on 25mm
centres and 50mm from the bottom of the tube. The
holes must face away from the house.
• The tube must be surrounded by at least 100mm of
limestone chippings to a depth of 400mm.
NOTE: Minimum hole size for the condensate soak
away must be 400mm deep by 300mmØ .
• In situations where there are likely to be extremes of
temperature or exposure, the use of a proprietary
trace heating system for external pipe work,
incorporating an external frost thermostat, should be
considered. If such a system is used, the
requirement to use 32mm pipe does not apply.
However, all other guidance above and the
instructions for the trace heating system, should be
closely followed.
NOTE: Internal pipe runs in unheated areas such
as lofts, basements and garages should
be treated as external runs.
Making it safe:
• Condensate pipework must not leak, freeze or
block up.
• Condensate traps must be filled before starting
up the boiler to prevent potentially harmful flue
products escaping via the condensate route.
• Do not dispose of condensate into water
recovery systems.
PRESSURE RELIEF PIPEWORK:
• The pressure relief valve is a safety device for the boiler
and if activated may discharge boiling water or steam
through the relief valve drain pipe.
• Care should be taken when siting the outlet pipe so
that it does not cause an obstruction or discharge
above a window, entrance or other public access
where it could cause a hazard.
• The pressure relief drain pipe (1) from the boiler
should be at least 15mm diameter copper pipe and
run downwards, away from any electrical equipment
or other hazard, preferably to an external drain or
soak away.
• The pressure relief drain pipe (1) should be finished
with a partial bend, near the outlet to face the
external wall (as shown) to help prevent freezing.
6 720 802 432 issue A 04/2012