41
ONE DIRECT ZONE system.
R
M
SE
Pcp
Fig. 89
MULTI ZONE system – with pump and air thermostat.
SE
TZ2
TZ3
TZ1
P3
SP
RL2
RL3
P2
P1
R
M
Pcp
TA2
Fig. 90
MULTI ZONE system – with zone valve and air thermostats.
TZ1
VZ1
VZ2
VZ3
TZ2
TZ3
SE
R
M
Pcp
TA2
Fig. 91
m
CAUTION
Set the parameter "tS 17 = DELAY SYSTEM PUMP
ACTIVATION to allow the opening of zone valve Vz.
5.15 Refilling or emptying
Before carrying out the operations described below, make sure
that the main system switch is set to “ON”; after a few seconds,
the main display will show on the
Main control panel
, and the
pressure level in the system during refilling can be displayed.
Thu 18 Set 2014
Zone
10:30
Menu
Mode
Off
ON
1.1 bar
Fig. 92
Press the
Mode
button and check that the appliance
function mode is set to
OFF
.
Esc
Back
Off
Fig. 93
If it is not OFF, turn the
encoder to select
OFF
mode and
press the
click
button to confirm.
5.15.1 REFILL operations
The
Murelle Revolution 25
boilers are not equipped with a filling
valve which must be prearranged on the system return. The
procedure is described below.
Remove the front panel:
if the front panel has not already been removed, open the two
catches (1), unscrew the two screws (2), pull the front panel (3)
forwards and release it from the top by lifting it.
3
2
1
2
Fig. 94
