Connecting An External Boiler; Fitting The Cladding And The Control Panel - Vaillant geoTHERM VWS Installation Instructions Manual

6.9

Connecting an external boiler

If your external boiler has a Vaillant eBUS interface, you
can connect it to the heat pump eBUS via the VR32 ac-
cessory (refer to the VR32 manual for more informati-
on).
1 2
1x 2P
L N Zu Auf N L N L N L N Zu Auf N 1 2 1 2 1 2 1 2 - + DCF OT AF 1 2 1 2
ZH LP/UV 1 ZP SK2-P HK2-P HK2-M VF2 RF1 VF1 SP BUS DCF/AF EVU 1xZP
PE N L1 L2 L3
PE N L3 L2 L1 L3 N PE L1 L2 L3 L3 ' N N PE L1 L2 L3 N L1 L2 L3 L1 L2 L3 PE
ABB A12-30-01
ABB A12-30-01 ABB A12-30-01
1 2 3 4 5 SCH 6 7 8 ASB
N L N L N L N L N L 2 1 L N 2 1 L N 2 1
Fig. 6.19 Connecting to a boiler with an eBUS interface
Boilers without eBUS interfaces are switched by the
heat pump controller via the internal auxiliary heating
contact (ZH, see Fig. 6.7) using an isolating relay (acces-
sory, Vaillant No. 306249).
Installation instructions geoTHERM VWS 0020046310_01
1 2
- +
DCF 0 AF
Tel BUS
DC / F AF
Electrical installation 6
L N Zu Auf N L N L N L N Zu Auf N 1 2 1 2 1 2 1 2 - + DCF OT AF 1 2 1 2
ZH LP/UV 1 ZP SK2-P HK2-P HK2-M VF2 RF1 VF1 SP BUS DCF/AF EVU 1xZP
PE N L1 L2 L3
PE N L3 L2 L1 L3 N PE L1 L2 L3 L3 ' N N PE L1 L2 L3 N L1 L2 L3 L1 L2 L3 PE
ABB A12-30-01
ABB A12-30-01 ABB A12-30-01
1 2 3 4 5 SCH 6 7 8 ASB
N L N L N L N L N L 2 1 L N 2 1 L N 2 1
Fig. 6.20 Connecting to a boiler without an eBUS interface
Key to Fig. 6.20
1 Isolating relay (Accessory No. 306249)
In both cases, the heat pump switches in the external
boiler depending on the heat demand and the controller
setting.
6.10

Fitting the cladding and the control panel

Fig. 6.21 Installing the front upper cladding
• Feed the console connector through the opening in
the front lower cladding panel and then press the
panel into the spring retainer on the casing frame.
• Screw the cladding panel to the casing with the two
screws, as shown in the illustration.
L N Zu Auf N
ZH LP/UV 1
1
39