8
3.4 Connecting
All pipe connections are made to the isolating ball valves. These valves have standard 3⁄4” female BSP connections. Ensure
that the pipe material and size suits the system M&E specification. A safety pipe is part of pre-plumbed unvented cylinder
installation.
45
65
65
65
65
50
60
352
appr
ox. 140
160
7
Ø12
The HIU must be installed inside a building. The location of the unit must be insulated against frost and easily accessible.
3.1 Preparation
Unpack the unit and read the installation manual to fully understand how the HIU is going to be fitted and connected.
Identify all hydraulic and electrical connections.
3.2 Positioning
The HIU needs to be fitted to a wall in an upright position with either isolating valves at the top or alternatively at the
bottom. The wall needs to be strong enough to support the unit. If the wall is of drywall construction make sure that there
is a supporting board (e.g. 18mm ply wood) installed to the supporting structure, which is strong enough to hold the unit.
While positioning the unit on the wall make sure that there is sufficient space to run pipes and cables along the sides if
needed and leave sufficient space underneath or above to connect the pipes to the isolating ball valves.
3.3 Fitting
The unit must be securely fitted using appropriate sized fittings. Ensure that the unit is mounted in an upright position. Fit
the First Fix Rail (FFR) to the wall using appropriate sized fittings as shown below. The external connections can be made
once the FFR is secured to the wall. The HIU can be hung at the FFR by sliding it onto the hanging points at any time but
must be secured to the structure using the 4 key hole shaped fixing points in the base plate of the unit.
3. Installation
Summary of Contents for Meibes A1CX Series
Page 22: ...22 Notes...
