Zenith Autoboil - Installation & Operating Instructions - 804545NZ - 03.17 v1.00
Page 5 of 24
Concealed
Vent
Concealed
Inlet
45 mm
Remove filter guide as shown in picture above.
Install plumbing and wiring and prepare pipe ends and wiring ends as
shown.
Screw heater chassis to the wall using screws or bolts suited to the
wall.
Screws or bolts must be capable of supporting the heater weight
when filled.
Step 3 – Connecting
THE FOLLOWING PROCEDURE IS TO BE DONE BY AN AUTHORISED
INSTALLER ONLY.
3.1 Plumbing
For exposed plumbing connection, connect the cold water inlet pipe from
the base of the heater directly to the 12.7 mm compression fittings.
For concealed plumbing connections, connect the cold water pipe
through the rear of the chassis using a 12.7 mm capillary elbow (# 63
Swivel Elbows).
Cold water pipes must be flushed before connection to the inlet. Any
clogging due to sediment or fines will adversely affect the operation of the
heater.
It is recommended that the heater be installed with a stop cock which
allows it to be isolated from the mains supply for servicing.
Water pressure requirements:
Minimum - 70 kPa maximum - 700 kPa.
3.2 Venting
A vent at the base of the heater must be plumbed to a safe visible location
as, under certain conditions, it may discharge cold or boiling water and/
or steam.
For exposed vent plumbing, connect vent outlet from the base of heater
to a 12.7 mm pipe which has a continuous fall, is no more than 3 metres
long, has no more than 3 right angle bends, and visibly discharges to a
waste water drain.
Alternatively attach a tun dish to the wall as shown and plumb away to
waste.
Note: when routing the plumbing for the vent / tundish installed and
mains inletline, ensure you do not obstruct filter access for filter
replacement.
1
2
Remove Filter Guard
Visible Tundish
Vent line
Installation Procedures
Warning: If pressure is likely
to exceed 700 kPa, a pressure
limiting valve must be installed
in the cold water supply line.
Zenith recommends a valve
rated at 350 kPa for this ap-
plication.
