20
Remeha Avanta 18v
LTALW7H000027e
X2
Exist
links
Terminal
Block X2
Power supply to external time clock -230v
Switch live (230v) from external time clock DHW demand
Remove existing link 4-3 to use this function
Switch live (230v) from external time clock HTG demand
Remove existing link 4-1 to use this function
5
4
N
L
3
2
1
2.7.2 Connecting a time control using an external 230 V
clock
When the switch spur is on, the terminal strip X2 will be live
(230 V).
•
A 230 V two channel time clock for CH and DHW control
can be connected to the Remeha Avanta 18v
.
Live 230 V supply for the time clock - connect to connectors
4 (L) and 5 (N) on X2 terminal strip.
•
For CH - remove exist link between connectors 4 and 1 of
the X2 terminal strip and connect the 230 V output from the
time clock to terminal 1 on the terminal strip X2.
•
For DHW - remove exist link between connectors 4 and 3 of
the X2 terminal strip and connect the 230 V output from the
time clock to terminal 3 on the terminal strip X2.
For this option to function correctly, a link or room control
must be fitted between connectors 7 and 8 of X9 terminal strip
(remove existing link before use).
If the 230 V supply for the external time clock is not taken from
the boiler – terminal block X2 connections 4 & 5, it must be
taken from the same phase as the boiler 230 V supply and
correct polarities observed.
2.7.3 Connecting a 230 V time clock in combination with
a modulating room control
With an externally mounted simple 230 V switching time clock
connected to connectors on X2 terminal strip and a Celcia 15
connected to connectors 7 and 8 of X9 terminal strip (remove
existing link), the Remeha Avanta 18v will provide room com-
pensated heating and time control over CH and DHW.
An OpenTherm
®
room modulating control (Celcia 15) used in
conjunction with a simple external 230 V time clock will
provide easy to set up and operate - timed room compensa-
tion heating
LTALW7H000027
