Vaillant 00 2003 6743, Installation Instructions Manual

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5
Installation instructions for external 3-way valve 0020037633_03
3 Scope of delivery
7
A B
AB
3 x
3 x
3 x
1
2
3
4
5
6
Fig. 3.1 Scope of delivery for external 3-way valve
Item Quantity Component
1 1 3-way valve motor
2 1 3-way valve body
3 1 Connection cable with Molex connector
4 3
Connector pipes, 28 mm with support
sleeves
5 3 Cap nuts 5/4“
6 3 Seals
7 1 Installation instructions
Table 3.1 Scope of delivery
4 Installation
4.1 Planning
Plan the hydraulic installation for the multi-functional
storage cylinder.
When planning, note that operation with a heat pump
requires separate hydraulic circuitry for the hot
water standby zone (hot water heated to consump-
tion setpoint) and the central heating buffer volume,
in order to use the multi-functional storage cylinder
in a properly effective way.
Refer also to the information in the system
manual for the multi-functional storage cylinder
(
¬ Installation and maintenance instructions for
allSTOR buffer cylinder system ), especially the
illustrations showing the hydraulic layouts.
4.2 Hydraulic integration
A B
A B
AB
AB
B <-> AB
AB <-> A
Fig. 4.1 Installation as a distributor in the heating flow line
from the heater
The 3-way valve, Kvs = 7.7, is integrated hydraulically as
follows:
>
>
>
Scope of delivery 3
Installation 4
GB