Glow-worm ULTRACON 18SXI Installation And Servicing Manual page 18

9 Safety Discharge Valve and Condensate Connections
INTERNAL SOIL
AND VENT STACK
Internal Soil and Vent Pipe
EXTERNAL LENGTH
OF PIPE 3M MAX. *
OPEN END OF PIPE
DIRECT INTO GULLEY
BELOW GROUND BUT
ABOVE WATER LEVEL
External Termination to a Gulley or Hopper
MIN. DIA. 21mm
NO RESTRICTION
ON LENGTH
OPEN END OF PIPE DIRECT INTO
GULLEY BELOW GROUND LEVEL
BUT ABOVE WATER LEVEL.
Internal Termination Downstream of
Sink Waste
NOTE: PIPEWORK SHOULD ALWAYS FALL AWAY FROM BOILER BY AT LEAST 2.5
44mm FOR EVERY 1M.
BOILER
MIN. DIA. 21mm
NO RESTRICTION
ON LENGTH
BOILER
MIN. DIA. 21mm
*NOTE: FOR EXTENDED
PIPE RUNS 32mm DIA.
PIPE SHOULD BE USED.
SINK
BOILER
EXTERNAL SOIL
AND VENT STACK
EXTERNAL
MAX. 3M
External Soil and Vent Pipe or Rainwater Pipe
Internal Termination into Combined Sink Waste
EXTERNAL LENGTH OF PIPE
3M MAX.
Ø22mm MIN.
TERMINATION FROM APPLIANCE.
500mm MIN.
SEAL
25mm MIN.
Ø100mm
PLASTIC TUBE
BOTTOM OF
TUBE SEALED
LIMESTONE CHIPPINGS
HOLE DEPTH
400mm MIN.
External Termination into Soakaway
18
BOILER
MIN. DIA. 21mm
NO RESTRICTION
ON LENGTH
SINK
(CONSTITUTES
BOILER
AIR BREAK)
MIN. DIA. 21mm
NO RESTRICTION
ON LENGTH
GROUND
(either/or)
300mm
MIN.
2 ROWS OF 3 x 12mm HOLES AT
25mm CENTRES 50mm FROM
BOTTOM OF TUBE. HOLES TO
FACE AWAY FROM HOUSE.
o
Diagram 9.3