10
7
INSTALLATION & CONNECTIONS
7.1
Mains Water Connection
The iMatic 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 G ½ male threaded fitting; a
suitable 90
o
elbow type fitting must be used. When tightening ensure the fill valve
within the tank is not rotated. If the valve is rotated it may not function correctly
with the risk of flooding.
Ensure there is a demountable joint in the pipe to allow the removal of the iMatic if
needed.
7.2
Water Outlet Pipework
1.
The pump has a G ¾ threaded connection to accept the supplied hose.
The hose is made water tight with a sealing washer on assembly, nip
tight to 4 to 5 Nm for water tight seal. (Do not overtighten). The
supplied hose must only be connected to 22 mm pipework.
Ensure the pipe is free from all score marks and deformities in the area
of the insertion depth (Figure 4) and cut the pipe square removing all
burrs and sharp edges to prevent damage to the sealing ‘O’-ring.
2.
Prior to inserting the pipe into the fitting mark the insertion depth on
the wall of the pipe with a soft pencil at a distance of 33 mm from the
end to be inserted.
3.
Check in the mouth of the fitting that the ‘O’-ring, nylon washer and
collet are in position.
4.
Push pipe firmly into fitting, until pencil mark is level with the top of the
collet and the pipe stop resistance is felt. Pull on the pipe to check it is
secure and correctly fitted.
5.
To break the joint, push pipe firmly into fitting, hold collet down and
gently remove pipe. If the system has been fitted with water care
should be taken to isolate pump and towels used to absorb spilled
water.
7.3
Connection to Overflow/Warning Pipe
The overflow fitting is designed to use G 1 ¼ (35 mm OD) plastic waste pipe.
Ensure there is a demountable joint in the pipe to allow the removal of the iMatic if
needed (Figure 8). The overflow must be free to vent to atmosphere either via a
tundish or a dedicated external pipe.
