Stuart Turner MAINBOOST iTank MBI Series Installation, Operation & Maintenance Instructions Manual page 14

4.14 Mains water connection to iTank: The iTank is to be permanently connected
to the mains water supply using rigid pipe or suitably sized and rated flexible
hose to comply with current building and plumbing regulations.
The water tank fill valve has a ½ "/15 mm compression fitting. When
tightening ensure the fill valve within the tank is not rotated. If the valve is
rotated it may not function correctly, with the subsequent risk of flooding.
4.15 Connection to overflow/warning pipe: The overflow fitting is designed to use
G 1 ¼ (35 mm OD) plastic waste pipe. The overflow must be free to vent to
atmosphere either via a tundish (Fig. 15) or a dedicated external pipe.
4.16 It is recommended that at least one drinking water tap is connected into the
un-pumped mains water supply (typically a kitchen sink), so the water supply
is maintained in the event of a failure of the pumped supply.
4.17 The iTank includes a G 1 F outlet as a gravity feed for uses where high
pressure/high flow is not required such as filling of a toilet cistern.
Use an appropriate fitting and seal using suitable thread sealant or PTFE tape
to connect to this outlet.
Isolating valve
Fig. 15
Use the included G1 plug and suitable thread sealant to
blank off this port if it will not be used for your installation.
Isolating valve
Pipe support clips
Isolating
valve
Overflow
pipe
Secondary
gravity
feed
- 14 -
Pumped water
supply
Non-pumped
water supply
(drinking water)
Mains water
supply
Pipe
support
clips
Drain
supply
Tundish
Cont ...