Vaillant geoTHERM Installation Instructions

Electrical installation
Installation instructions geoTHERM 0020051574_04 57
7
7.4 Controller PCB (overview)
1
N L
2
N L
3
N L
4
N L
5
N L
SCH
2 1
6
N L
7
2 1
8
N L
ASB
2 1
L N
SK2-P
L N
ZP
L N
ZH
L N
HK2-P
LP/UV1
ZuAufN
HK2
ZuAufN
1 2
VF2
1 2
RF1
1 2
VF1
1 2
SP
- +
BUS
1 2
EVU
1 2
1xZP
DCF/AF
DCF OT AF
F2(F501)
F1
X24
15
16
18
1 2 4 6
3 5 7 8 9 11 12 13 14
24252627282930313233
20
22
19
17
21
10
7.18 Controller PCB
Key
Upper connection terminals
1 ZH External auxiliary heater
2 LP/UV 1 External 3-way diverter valve heating/cylinder
charging for DHW loading
3 ZP DHW circulation pump
4 SK2-P VWW only: Well pump circuit breaker
VWS only, for external passive cooling: Brine
circuit pump cooling and heating/cooling
diverter valves
5 HK2-P Second external heating circuit pump
6 HK2 Second external 3-way diverter valve or 3-way
brine mixing valve (depending on the hydraulic
scheme)
7 VF2 External flow sensor
8 RF1 Return temperature sensor buffer tank
9 VF1 Flow temperature sensor buffer tank
10 SP DHW tank temperature sensor
11 BUS eBUS
12 DCF/AF DCF signal + external sensor
13 Energy
supplier Connection for relay contact of the control sys-
tem signal receiver from the power company
Open: compressor is allowed to operate
Closed: compressor operation blocked
14 1xCP Contact for one-time requirement for the
circulation pump, e. g. using an external button
PCB components
15 eBUS/vrDIALOG 810/2
16 Check LED for power supply (lights green if OK)
17 Fuse F2 T 4A/250 V for controller PCB
18 Fuse F1 T 4A/250 V for brine pump
19 Monitoring of compressor phase sequence
20 Multiple connector for temperature sensors
21 eBUS plug controller (signal and voltage supply)
22 Multiple connector for pressure sensors
Lower connection terminals
24 ASB In-rush current limiter (VWS/VWW 220 and
300 only)
25 8 Compressor circuit breaker
26 7 Internal high-pressure and low-pressure switch
27 6 (not connected)
28 SCH Accessory for brine switch (VWS only) or flow
switch (VWW only) on terminal strip
29 5 Brine pump (VWS only)
30 4 Controller PCB voltage supply
31 3 External heating circuit pump on terminal strip
32 2 Free
33 1 VWS only: Control of 3-way brine mixing valve
cooling (on terminal strip)

Vaillant geoTHERM Specifications

General

Brand	Vaillant
Model	geoTHERM
Category	Heat Pump
Language	English