Vaillant ECOmax 828 E - Connecting a Room Thermostat; Timer Operation and Settings

12
7543
MAINS
SUPPLY
230 V
50 Hz
L
L
N
N
N
20 V
DO NOT USE!
3 A FUSE
ROOM
THERMOSTAT
89
Fig. 13
EC_Regler_(24h_7d)_010/0
12 345
M
-+
0
I
Fig. 14
EC_Regler_(24h_7d)_006/0
Boiler Terminal Strip
Refer to boiler installation instructions
for full wiring details
4. Connecting a room
thermostat
5. Timer operation
Note: The timer switch contacts are:–
Closed During off periods
Open During on periods
(see fig. 14)
24 hour/7 day time clock
Remove link wire
between terminals
3 and 4, if room
thermostat is to be
connected