FERtech 25 OV
12
Cod. 3540U431 - 11/2009 (Rev. 00)
fig. 11
Make Up Water
This appliance is designed to work on an open vented fully pumped heating system only, (see fig 12 page
13). The make up of water must be made via a suitably sized cold feed and expansion tank installed to
the current regulations.
This appliance is not suitable for gravity type installations or primatic type cylinders only indirect ones
should be used.
The system must be fully pumped due to the complex design of the Aluminium Laminar heat exchang-
ers high efficiency design.
Attention - is drawn to the Model Water Byelaws.
Fittings manufactured from duplex (alpha-beta) brass are not acceptable for underground use and certain
water undertakings will not accept their use above ground.
The connecting kits shown in fig. 4 are supplied as standard.
Key
A =
Nut
B =
Compression olive
C =
Nipple
F =
1/2 gas seal - Blue
Gas isolation valve
A
B
F
A
22
mm
22
mm
A
C
B
B
X2
X1
Flow
Return
