Installation and maintenance manual ecoMAX 646
16
4.8.4 Connection
diagram
9
8
7
5
4
3
N
L
N
L
Pump 2. Pump
Contact -
The
r m
L N
24V I
230V
R T 24
V
230V
R T 230
V
X 10
X 7
X 2
13
X 6
1
1
1
Coding Resistance
X 8
1
Fig. 4.12 Connection diagram ecoMAX 646
4 Installation
Diagnostics
PWM pump signal
Connection accessory box 306 248
and multi-function module 306 253 (1 of 5)
or multi-function module 306247 (2 of 6)
Maximum thermostat for fl oor heating, 20 V
(remove bridge on connection)
Room thermostat 24 V: connections 7, 8 and 9
Caution: Do not connect supply voltage!
Risk of electronics being destroyed!
Mains supply: 230 V/50 Hz
Room thermostat 230 V/50 Hz
(remove bridge on connection)
Connection 230 V/50 Hz fan
Connection heating pump
Connection storage charging pump
Use of other functions via
module 1 of 5 (306 253) or
module 2 of 6 (306 247)
(diagnosis point d.16 except function)
sensor for circulation pump/
sensor for underfloor-heating system
DCF-77 signal
supply or return sensor
hydraulic
decoupler
sensor
outside temperature sensor
edge connector is included with the weather compensator
