16
2.8.6
Use with different
electronic systems
Some examples are given below of boiler
systems combined with different electronic
systems. Where necessary, the parame-
ters to be set in the boiler are given.
The electrical connections to the boiler
refer to the wording on the diagram (fig.
11). The zone valve control starts at every
demand for heating of the zone 1 (it is from
part of the TA1 or the CR).
Description of the letters indicating the
components shown on the system dia-
grams:
M
System output
R
System return
CR
Remote control CR 73
SE
External temperature sensor
TA1-2-3-4
Zone room thermostat
CT1-2
Zone room thermostat
internal time clock
VZ1-2
Zone valve
RL1-2-3-4
Zone relay
Sl
Hydraulic separator
P1-2-3-4
Zone pump
IP
Floor system
EXP
Expansion card Mixed Zone
(code 8092234)
VM
Three-way mixer valve
R
M
SE
TA
CR
TA1
CR
SE
injury or damage to persons ,animals or
property, resulting from the failure to pro-
vide for proper earthing of the appliance.
2.8.1
Room Thermostat
The heat demand can by a "clean contact"
(conforming to EN607301), room stat or
programmer connected to the "TA" con-
nection ( fig 11) , CN6 terminals 7&8, after
removing the link.
Alternatively the heat demand can be by a
230v switched control, connected to ter-
minal 14 on connector CN7 and removal of
the TA link.
2.8.2
External Control CR 53
A CR 53 external control (part number
8092227),can be connected to the boiler.
This will control the heating function of the
boiler. The domestic hot water will continue
to be controlled by the boiler keypad.
NOTE: Reset parameter 10 to 2 (PAR 10
= 2).
2.8.3
Remote control CR 73
connection (optional)
The boiler is designed for connection to a
remote control unit, supplied on request
(code 8092226). The remote control unit
CR 73 allows for complete remote control
of the boiler, except reset.
The boiler display will show the following
message:
For installation and use of the remote con-
trol, follow the instructions in the package.
NOTE: Ensure PAR 10 set to 1 (PAR 10 =
1).
2.8.4
External sensor connection
The boiler is designed for connection to an
external temperature sensor, supplied on
request (code 8094101), which can auto-
matically regulate the temperature value of
the boiler output according to the external
temperature.
For installation, follow the instruction in the
package.
2.8.5
Remote RF control
The boiler is designed for connection to RF
remote controllers( mechanical - code
8092231 or digital - code 8092232),
which can control the central heating func-
tion.
1
BASIC SYSTEM
SYSTEM WITH A DIRECT ZONE AND ROOM THERMOSTAT, OR
WITH A CLIMATIC REGULATOR CR 53 (Code 8092227) OR WITH
REMOTE CONTROL CR 73 (Code 8092226) AND EXTERNAL SEN-
SOR (Code 8094101)
PARAMETERS SETTINGS
If using CR 53 set parameter 10 to 2
(PAR 10 = 2)
