REMEHA Avanta Plus 24s, Installation And Service Manual

Page: 15 / 153

15
2.3.10 Connecting condensate drain
LT.AL.W7H.000.018
• Connect the condensate drain outlet
Ÿ
to a suitable
waste water drain point using acid resisting pipe work
(i.e. - ¾” overflow). To enable the siphon in the boiler to be
removed / serviced, the connection should not be a perma-
nent one (i.e. “push fit” system).
•
To prevent the risk of freezing connect the condensate into
an internal vertical soil pipe using a tundish (air break) c/w
a min 75 mm water seal trap.
•
If the condensate pipe has to run externally make sure
this is done by realizing the shortest possible route, and
increase the diameter to at least 1¼” or insulate it with
weather resistant insulation.
•
The drain should slope at least 3 cm per meter, with a maxi-
mum horizontal length of 5 m.
z
• If connecting into an internal discharge branch (i.e. sink
waste etc) the connection must be down stream of the
existing
waste trap.
• Fill the boiler siphon with water before operation, to prevent
flue gasses discharging into the room.
•
The condensate drain must be connected in accordance
with current regulations.
2.3.11 Connecting under floor heating
The Remeha Avanta Plus can be connected directly to an
under floor heating system.
If plastic pipes have been used they must be made oxygen dif-
fusion proof in compliance with DIN 4726/4729.
When installing under floor heating with a separate pump, the
layout should be such that the under floor heating pump can-
not cause a flow to the boiler if there is no heat demand. A low
loss header should therefore be fitted between the system and
the boiler.
z
Please ensure that the residual pump duty of the boiler is
sufficient for the resistance of the under floor system. If not a
low loss header should be used to separate the boiler from
the under floor circuit to allow a separate pump sized for the
resistance of the under floor system to be used.
2.4 Gas-side connections
2.4.1 Additional guidelines for gas connections
m
Before installation, check that the gas meter has sufficient
capacity for the demand. Remember to consider the
consumption of all household appliances.