6 Installation
6.7 Install thermal overload protection
!
CAUTION
–
Only standard-tested thermal overload pro-
tection may be installed (according to the
EN 14597 standard).
–
The cold water pipe must not be able to be
shut off and must permanently have a mini-
mum pressure of 2 bar; the water tem-
perature must not exceed 15°C. A flow of 2
m³/h must be guaranteed.
–
The drain line must be routed freely into an
open drain funnel.
–
A backflow inhibitor and, as a pressure limi-
ting device, a safety valve or an expansion
tank with a minimum capacity of 4 litres
must be installed at the inlet connection.
The boiler
maxi
mus
has two safety heat exchangers
installed (one in the burner, one in the heat exchanger).
The two safety heat exchangers are connected in
series. Only the connection to the burner has to be
made on site.
►
Connect the thermal drain safety device as
shown, i.e. inflow line
1
, backflow line
2
.
Fig. 2-31: Connect thermal overload protection
►
Fit the thermal overload protection in the direction
of flow as seen before the safety heat exchanger
(i.e. no water pressure building up in the heat
exchanger).
Fig. 2-32: Function of the thermal overload protection (schematic
representation)
Safety heat exchanger in the heat exchanger
Fig. 2-33
6.8 Install temperature monitor (TM)
►
Mount the temperature monitor on the channel of
the fuel auger in the area of the wall penetration
(inside the storage room).
►
Connection to terminal X7.1 - 7.2
Operation manual
maximus
21
