Vaillant geoTHERM Installation Instructions Manual

Also see for geoTHERM SERIES: System Installation Instructions Installation and servicing Instructions for use Operating instructions

Contents

Electrical installationInstallation instructions geoTHERM 0020051574_04 5777.4 Controller PCB (overview)1N L 2N L 3N L 4N L 5N L SCH2 1 6N L 72 1 8N L ASB2 1L NSK2-PL NZPL NZHL NHK2-PLP/UV1ZuAufNHK2ZuAufN 1 2VF21 2RF11 2VF11 2SP- +BUS1 2EVU1 21xZPDCF/AFDCF OT AFF2(F501)F1X241516181 2 4 63 5 7 8 9 11 12 13 14242526272829303132332022191721107.18 Controller PCBKeyUpper connection terminals1 ZH External auxiliary heater2 LP/UV 1 External 3-way diverter valve heating/cylindercharging for DHW loading3 ZP DHW circulation pump4 SK2-P VWW only: Well pump circuit breakerVWS only, for external passive cooling: Brinecircuit pump cooling and heating/coolingdiverter valves5 HK2-P Second external heating circuit pump6 HK2 Second external 3-way diverter valve or 3-waybrine mixing valve (depending on the hydraulicscheme)7 VF2 External flow sensor8 RF1 Return temperature sensor buffer tank9 VF1 Flow temperature sensor buffer tank10 SP DHW tank temperature sensor11 BUS eBUS12 DCF/AF DCF signal + external sensor13 Energysupplier Connection for relay contact of the control sys-tem signal receiver from the power companyOpen: compressor is allowed to operateClosed: compressor operation blocked14 1xCP Contact for one-time requirement for thecirculation pump, e. g. using an external buttonPCB components15 eBUS/vrDIALOG 810/216 Check LED for power supply (lights green if OK)17 Fuse F2 T 4A/250 V for controller PCB18 Fuse F1 T 4A/250 V for brine pump19 Monitoring of compressor phase sequence20 Multiple connector for temperature sensors21 eBUS plug controller (signal and voltage supply)22 Multiple connector for pressure sensorsLower connection terminals24 ASB In-rush current limiter (VWS/VWW 220 and300 only)25 8 Compressor circuit breaker26 7 Internal high-pressure and low-pressure switch27 6 (not connected)28 SCH Accessory for brine switch (VWS only) or flowswitch (VWW only) on terminal strip29 5 Brine pump (VWS only)30 4 Controller PCB voltage supply31 3 External heating circuit pump on terminal strip32 2 Free33 1 VWS only: Control of 3-way brine mixing valvecooling (on terminal strip)