Table of Contents
Advertisement
6
D.H.W. HEAT EXCHANGER
6.1 Function
The d.h.w heat exchanger A in Figure 6.1 and Figure 6.3 allows
the instantaneous transfer of heat from the primary hydraulic cir-
cuit to the water destined for d.h.w use.
Figure 6.1
The schematic structure is shown in Figure 6.2.
Primary hydraulic circuit
Domestic hot water circuit
Figure 6.2
6.2 Removal
Warning: isolate the boiler from the mains electrici-
ty supply before removing any covering or compo-
nent.
1 Remove the panels of the case.
2 Empty the primary circuit and the d.h.w circuit of the boiler.
3 Remove the control panel following the instructions from 4 in
section 2.3.
4 Remove main electronic p.c.b. box following the instructions
from 5 in section 2.4.
5 Remove the pump following the instructions in section 7.3.
6 Completely unscrew the Allen key screws B in Figure 6.3
which hold the exchanger to the plastic groups.
- 16 -
D.H.W. HEAT EXCHANGER
Figure 6.3
A
7 Move the exchanger towards the rear of the boiler and extract
Reassemble the d.h.w. heat exchanger carrying out the removal
operations in the reverse order.
Figure 6.4
B
it to the left.
Warning: to lubricate the O-ring gaskets exclusively
use a silicone base grease compatible to be in con-
tact with foods and approved by the local water Au-
thorities.
Warning: When reassembling the exchanger be sure
to put the off center location/securing pin indicated
in Figure 6.4 towards the left side of the boiler.
A
B
Advertisement
Table of Contents
