Installation - WIKORA WPKR 750 Installation Manual Operating Instructions

5 Installation

All pipes connecting to the tank should have removable connections (fitting/flange). Pipe thread seals with teflon are to
be avoided.
All tank connecting pipes are to be planned, constructed and tested according to the technical rules in force, as well as to the
corresponding norms and regulations in accordance with their application and supply medium.
Appropriate filters should be used to prevent dirt or particles from entering the tanks. Moreover, the tank should be ensured
against pressure fluctuations and excess pressure through the installation of tested pressure reducing valves and safety
valves.
Sensors and thermostats necessary for temperature control must be securely and permanently positioned on the tank
(immersion sleeve and sensor rail).
The tank's venting and draining facilities must have the appropriate dimensions and be correctly installed.
The installation company is responsible for the correct execution of work and for the safe and careful insulation of the pipes.

When connecting to a solar plant, a temperature limiter is required and must be installed on site at the hot water outlet
in order to prevent scalding.
Connection Scheme
Anode
HW
Circulation
CW
Sensor-
socket
The size of the DHW safety valve is shown below:
Content of DHW space
up to 200 l
above 200 to 1000 l
When installing a circulation pipe, the plug in the flange cover must be replaced by a circulation connection attachment (plastic
immersion pipe with double nipple R ¾", Wikora part number 096 090).
The thread diameter of the heating safety valve depends on the nominal capacity of the water space and the maximum heating
capacity of the heat generator. It can be determined as follows:
Reaction pressure
1,5 bar
2,0 bar
2,5 bar
3,0 bar
Thread diameter (inch)
© Wikora GmbH
Hotwater-
mixer
Water plug
Safety valve
Drain pipe
Min. valve size
NW 15 (1/2")
NW 20 (3/4")
Max. heating capacity of the heat generator
36 kW 72 kW
43 kW 86 kW
50 kW 100 kW
56 kW 112 kW
1/2 ¾
Safety group according to
DIN 1988
144 kW 252 kW
172 kW 302 kW
200 kW 350 kW
224 kW 395 kW
1 5/4
Illustration 3 (Schematic drawing– example hydraulic system heating)
Page 5
Illustration 2 (Schematic diagram)
Max. heating performance
75 kW
150 kW
433 kW 650 kW
518 kW 778 kW
600 kW 900 kW
678 kW 1017 kW
6/4 2
As of 6/22/2015
Errors excepted.