Autoboil - Installation & Operating Instructions - 81355 - May 2012 v1.01
Page 5 of 12
Step 3 – Connecting
a) Plumbing:
Note:
Small capacity Autoboils have concealed plumbing connections and
Large capacity Autoboils have exposed plumbing connections.
For exposed plumbing connection, connect the cold water inlet pipe from the base
of the heater directly to the 1/2” or 12.7 mm compression fittings.
For concealed plumbing connections, connect the cold water pipe through the rear
of the chassis using a 1/2” or 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 isolating valve which
allows it to be isolated from the mains supply for servicing.
Water pressure requirements:
Minimum - 100 kPa, Maximum - 700 kPa.
Warning: If pressure is likely to exceed 700 kPa, a pressure limiting valve must
be installed in the cold water supply line. We recommend a valve rated at
350 kPa for this application.
b) 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 1/2” or
12.7 mm pipe which has a continuous fall, is no more than 3 meters long, has no
more than 3 right angle bends, and discharges to a waste water drain.
For concealed vent plumbing, connect plumbing to the vent outlet from the
heater rear using a capillary elbow protruding 45 mm from the wall.
Alternatively attach a tun dish to the wall as shown and plumb away to waste.
Installation Procedures
Continued
COLD
INLET
VENT
OUTLET
INLET
POSITION
VENT
POSITION
45mm
Elbow
250mm
Wring
Concealed
Vent
Concealed
Inlet
45 mm
Side View
Front View
