INSTALLLATION
11
Vertical discharge
For vertical discharge applications the installation must be in accordance with AS 5601.
For vertical discharge applications where each water heater is
individually flued, the 300mm diameter flue for each water heater can
be run for a total length of 20m with up to 3 x 90
o
elbows plus a 135
o
terminal. N.B. Jaks cowls are
NOT
to be used to terminate the flue as
they will prevent adequate venting of the flue gases. See diagram
opposite.
•
For vertical discharge applications where each water heater is connected to a common flue, the
300mm connector from each water heater must join the common flue using a 30
o
swept junction
positioned so as to direct the flue gases into the common flue in the direction of discharge. The
common flue must be sized in accordance with AS 5601 and terminate with an appropriately sized
135
o
terminal. Dampers may be required to be installed in each connector in accordance with
AS5601 (see ‘Typical Installation – Common Flue Manifold’ diagram above).
Note: The flue gasses from this water heater have a CO
2
level of 1%. The flue must be designed to
accommodate the amount of excess air accordingly.
POWER FLUEING
If the flue cannot be designed as described above, then a power flue may be required. Power flues
must be designed by persons competent to do so and must be interlocked with the water heater.
Contact Raypak for power flue wiring diagrams.
