Mixergy M0008, Installation And Servicing Instructions

Page: 23 / 35

23
Discharge pipework
• The discharge pipe should not be connected to a soil discharge
stack unless it can be demonstrated that the soil discharge
stack is capable of safely withstanding the temperatures of the
water discharged, in which case, it should contain a mechani-
cal seal, not incorporating a water trap, which allows water into
the branch pipe without allowing foul air from the drain to be
ventilated through the tundish.
• If plastic pipes are used as branch pipes carrying discharge
from a safety device, they should be either polybutylene (PB)
or crosslinked polyethylene (PE-X) complying with national
standards such as Class S of BS 7291-2:2006 or Class S of BS
7291-3:2000 respectively; and be continuously marked with a
warning that no sanitary appliances should be connected to
the pipe.
• Where pipes cannot be connected to the stack it may be pos-
sible to route a dedicated pipe alongside or in close proximity
to the discharge stack.
Plastic pipes should be joined and assembled with
fittings appropriate to the circumstances in which
they are used as set out in BS EN ISO 1043-1:2002.