Worcester GREENSPRING CWi47 Installation And Operating Instructions Manual page 21

internal foul water discharge point such as an internal
soil and vent stack. A suitable permanent connection to
the foul waste pipe should be used.
8
32mm
Fig. 28 Disposal to soil vent stack
Alternatively if the first option is not possible an internal
kitchen or bathroom waste pipe, washing machine
waste pipe etc. can be used.
Ensure that the condensate drain pipe is connected
"down stream" of the waste trap.
Fig. 29 Disposal to a waste pipe
CONDENSATE PUMP
Where "gravity discharge" to an internal termination is
not physically possible, or where very long internal runs
would be required to reach a suitable discharge point,
condensate should be removed using a proprietary
condensate pump, of a specification recommended by
the water heater or condensate pump manufacturer.
The pump outlet pipe should discharge to a suitable
internal foul water discharge point such as an internal
soil and vent stack, internal kitchen or bathroom waste
pipe, washing machine waste pipe etc. A suitable
permanent connection to the foul waste pipe should be
used.
6 720 646 322 (2012/05)
INSTALLATION INSTRUCTIONS
8
32mm
Fig. 30 Condensate pump disposal
6.7.2 EXTERNAL CONNECTIONS
NOTICE: Freezing conditions
B Pipe work length should be kept to a
minimum and the route as vertical as
possible.
B Weather proof insulation must be used.
NOTICE: Condensate waste
B Care should be taken when siting a soak-
away to avoid obstructing existing
services.
Continued - Key to condensate illustrations
8 Condensate trap
9 100mm Ø minimum plastic pipe
10 Drainage holes
11 Limestone chippings
12 Bottom of sealed tube
13 Insulate and increase pipe size
14 Pipe work transition
15 External air break
16 Air gap
17 External rain water pipe into foul water
18 43mm 90° male/female bend
19 PVCu strap on fitting
* Condensate trap of 75mm already
incorporated into the water heater
Tab. 7
If no other discharge method is possible then the use of
an externally run condensate drainage pipe terminating
at a suitable foul water discharge point, or purpose-
designed soak away, may be considered. If this method
is chosen then the following measures should be
adopted:
6720646322-11.1V
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