1 INTRODUCTION
The “VDS” (double drain valve) system is used to convey the “polluting solution” discharged by washer disinfectors,
generally water + detergent + biologically contaminated material + miscellaneous residue, into a recovery tank rather than
to the sewers.
The VDS kit separates out the “contaminated” drain water from the first wash cycles from the “clean” drain water.
The VDS is composed of a double valve located on the device’s drain outlet which is controlled directly by the device’s on-
board controller, thus creating two separate drain outlets.
2 SYSTEM CONFIGURATION - TO BE DONE BY THE USER
Smeg technical staff are not authorised to do any construction work or modifications to the user’s plumbing.
The construction work and modifications required for the installation of the WD-VDS must be done at the user’s expense
by qualified technicians (plumber/fitter):
1. CONSTRUCTION WORK: The two brackets included in the kit must be mounted to the wall with anchor bolts,
40 cm higher than the level at which the device itself is installed, and positioned to allow a slope of 5°-10° to the
horizontal (as specified below). We recommend using the pre-assembled WD-VDS kit to determine and mark the
proper installation position on the wall.
2. PLUMBING: The user is responsible for connecting the two outlets of the WD-VDS kit to the drain circuit. The two
valves (“Recovery” and “Drain”) of which the kit is composed have 1 ½” threaded outlet fittings. We recommend
that the outlet connections be made with:
a. Pipe reduction fittings to connect ¾” hose fittings to the outlets (fittings not included);
b. Rubber drain hoses, ¾” (ID 20 mm) to connect the outlets to the system drain fittings (hoses not
included). The hoses must be rated to handle the maximum water temperature discharged by the device
(95°C), and be of the recommend diameter (ID 20 mm).
3 DESCRIPTION OF COMPONENTS
We break the VDS system down into 2 blocks to explain how to install it.
The “first block” is composed of:
• N. 2 solenoid operated valves with 1 ½” inlet and outlet fittings. In the following image, the LH valve is the “Drain”
valve, while the RH valve is the “Recovery” valve. The solenoid valves are actuated by the device's controller as
follows:
o The Recovery valve (marked “EVSA”, alternative discharge solenoid valve) intercepts the potentially
contaminated flow resulting from the first phases of the process (prewash, wash, neutralisation).
On models WD6010 and GW6010, this valve is marked EVRS
o The Drain valve “EVU”, intercepts the flow coming from the remaining phases of the cycle.
On models WD6010 and GW6010, this valve is marked EVSL
• N. 1 central “T” fitting (with n. 1 ¾” inlet which accepts a ¾” hose fitting and n 2 1½” outlets)