Connecting A Time Control Using An External 230 V Clock; Connecting A 230 V Time Clock In Combination With A Modulating Room Control - REMEHA Avanta 12v Installation & Service Manual

Terminal
Block X2
5 N
Power supply to external time clock -230v
4 L
Switch live (230v) from external time clock DHW demand
3
Remove existing link 4-3 to use this function
Exist
2
links
Switch live (230v) from external time clock HTG demand
1
Remove existing link 4-1 to use this function
fig. 19 Wiring diagram for an external 230 V time clock
X2
LTALW7H000027
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
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 will provide room compen-
sated 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 compensation heating
20
Remeha Avanta
.