Translation of the original instructions PAW GmbH & Co. KG We reserve the right to make technical changes without notice! Böcklerstraße 11 Printed in Germany – Copyright by PAW GmbH & Co. KG 31789 Hameln, Germany 9964042x21-mub-en - V02 2021/11...
Scope of these instructions These instructions describe the assembly of the switch valve set for the double cascade of the FriwaMidi DN 20 and the FriwaMaxi DN 25. The chapters called [specialist] are intended for specialists only. The commissioning of the Friwa modules is described in the respective instructions of the domestic hot water modules that are enclosed with the individual modules.
2 Safety instructions 2 Safety instructions The installation and commissioning as well as the connection of electrical components require technical knowledge commensurate with a recognised vocational qualification as a fitter for plumbing, heating and air conditioning technology, or a profession requiring a comparable level of knowledge [specialist].
3 Product description 3 Product description The switch valve set can only be mounted in domestic hot water modules of the type FriwaMidi or Friwa Maxi from march 2013 on. For other domestic hot water modules, other assembly sets must be used.
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3 Product description Procedure for one module: NOTICE Use the new gaskets included! Screw the thread connections at first manually and adjust the pipes, in order to guarantee a low-tension installation. 1. Mount the short and straight pipe section (A) on the piston valve (1). 2.
3 Product description Controller connection FC3.10 The following illustrations show how to connect the 2-way zone valves (switch valves) electrically to the controller, and how to connect the controllers with each other in order to establish a communication between them. WARNING Risk to life and limb due to electric shock! ...
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3 Product description Remove the white front panel (A) of the controller. Remove the strain reliefs (B). Remove the sensor cables of the VFS/US sensors, of the PWM signal and of the temperature sensors from the controller circuit board plug connector (C). Unscrew the two screws to remove the intermediate level (D).
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3 Product description 7. If, in addition to the 2-way-zone valve, also the 3-way valve for the stratification is meant to be connected to the relay 2, connect both wires (L ) to "L" by means const of a duo wire end ferrule (twin wire end ferrule). See controller instructions, chapter "stratification".
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3 Product description Cascade connection of the domestic hot water modules The following illustration shows how you must connect the three domestic hot water modules via two bus lines in a cascade connection. Plug the jumper of the first and the last participant of the modbus communication into the plug connector which is marked as "Pos.
3 Product description Controller connection FC4.13 The following figures show how to connect the 2-way zone valves with the controller and how to connect the controllers with each other. WARNING Risk to life and limb due to electric shock! Prior to commencing electrical work on the controller, pull the mains plug and make sure that a restart is not possible.
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3 Product description Operation of the controller FC4.13 You will find a detailed description of the commissioning of the controller in the controller instructions (see page 36 / 37). 9964042x21-mub-en - V02 2021/11...
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3 Product description If not only the switch valve but also the 3-way valve for stratification shall be connected, then double L‘ with the help of a WAGO terminal (see example). 2021/11 9964042x21-mub-en - V02...
4 Scope of delivery 4 Scope of delivery NOTICE Complaints and requests/orders of spare parts will only be processed with information on the serial number! The serial number is placed on the short and straight pipe section. 9964042x21-mub-en - V02 2021/11...
4 Scope of delivery Switch valve set FriwaMidi (64042621) Position Spare part Item no Sealing kit, 10 pieces, ½", for thread connection 1" N00024 2-way zone valve DN 20, drinking water, 2 x 1" ext. thread, N00022 with actuator 230 V / 50 Hz – 12s/90°...
4 Scope of delivery Switch valve set FriwaMaxi (64042721) Position Spare part Item no Sealing kit, 10 pieces, 1", for thread connection 1½" N00036 Sealing kit, 10 pieces, ¾", for thread connection 1¼" N00174 2-way zone valve DN 25, drinking water, 2 x 1¼" ext. thread, N00028 with actuator 230 V / 50 Hz –...
5 Technical data 2-way zone valve 5 Technical data 2-way zone valve Dimensions Switch valve set FriwaMidi Switch valve set FriwaMaxi Total height 507 mm 518 mm Pipe connections 1" external thread 1¼" external thread Operating data Degree of protection...
6 Disposal 6 Disposal NOTICE Electrical and electronic devices must not be disposed of in the household waste. For your return, there are free collection points for electrical appliances and, if necessary, additional points of acceptance for the reuse of the devices in your area.