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PAW GmbH & Co. KG
Böcklerstraße 11, 31789 Hameln, Germany
Phone: +49-5151-9856-0, Fax: +49-5151-9856-98
E-mail: info@paw.eu, Web: www.paw.eu
Installation and Operation Instructions
HeatBloC® MC45 - DN 25
12/2024
994536093x-mub-en - V02
1

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  • Page 1 PAW GmbH & Co. KG Böcklerstraße 11, 31789 Hameln, Germany Phone: +49-5151-9856-0, Fax: +49-5151-9856-98 E-mail: info@paw.eu, Web: www.paw.eu Installation and Operation Instructions HeatBloC® MC45 - DN 25 12/2024 994536093x-mub-en - V02...
  • Page 2: Table Of Contents

    Table of Contents Table of Contents General Information....................4 Scope of these instructions..................4 Designated use......................4 Safety instructions......................5 Product description....................6 Equipment........................6 Function........................7 3-temperature mixing valve [specialist]..............8 Pump [specialist]......................9 3.4.1 Pump settings Grundfos UPM3 Hybrid..............9 3.4.2 Pump settings Wilo Para STG O / MAXO..............10 Check valve and non-return valve................11 Assembly of the actuator...................
  • Page 3 Hydraulics........................30 Technical data......................32 Dimensional drawing DN 25..................33 Pressure drop and pump characteristic curves............33 Disposal........................34 12/2024 994536093x-mub-en - V02...
  • Page 4: General Information

    Improper usage excludes any liability claims. This product complies with the relevant directives and is therefore labelled with the CE mark. The Declaration of Conformity is available upon request, please contact the manufacturer. Only use PAW accessories with the product. 994536093x-mub-en - V02 12/2024...
  • Page 5: Safety Instructions

    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].
  • Page 6: Product Description

    Thus, the hydraulic balancing at the distribution manifold is assured and an energy-saving operation of the pump is guaranteed at any time. The PAW HeatBloC® must be either installed on a PAW modular distribution manifold or a PAW wall bracket.
  • Page 7: Function

    Product description 3.2 Function MC45 - 3-temperature mixing valve with additional connection for a second flow temperature The 3-temperature mixing valve is used in combination with a buffer tank which can be heated either by a solar installation, a solid fuel boiler or a conventional boiler.
  • Page 8: 3-Temperature Mixing Valve [Specialist]

    Product description 3.3 3-temperature mixing valve [specialist] The 3-temperature mixing valve, driven by an electric actuator, adjusts the flow temperature of the consumer circuit to the required value by means of the flow sensor and the controller. The 3-temperature mixing valve is equipped with a second flow connection (C-3) on the back side. This connection allows to withdraw water with a lower flow temperature from the intermediate part of the tank, e.g.
  • Page 9: Pump [Specialist]

    Product description 3.4 Pump [specialist] The pump can be completely isolated. It can be replaced and maintained without draining the HeatBloC®s. 1. Close the ball valves in the flow and the return (A-2, F-2). 2. Remove the actuator from the mixing valve. 3.
  • Page 10: Pump Settings Wilo Para Stg O / Maxo

    Product description 3.4.2 Pump settings Wilo Para STG O / MAXO The pump settings are recognizable by glowing LEDs and must correspond to the following figure. Please observe the separate instructions of the pump! Wilo Para STG O Wilo Para MAXO 994536093x-mub-en - V02 12/2024...
  • Page 11: Check Valve And Non-Return Valve

    Product description 3.5 Check valve and non-return valve The product is equipped with a check valve and with a non-return valve. The valves can be opened. operation During operation, the markings must point to "Z". The check valve and the non-return valve are ●...
  • Page 12: Assembly Of The Actuator

    Product description 3.6 Assembly of the actuator For mixing valves with flow on the left, the scale must be turned by 180°. For mixing valve with flow on the right For mixing valve with flow on the left Assembly of the actuator - flow on the right: 1.
  • Page 13: Change Of The Flow Line [Specialist]

    Change of the flow line [specialist] 4 Change of the flow line [specialist] 1. Dismount the temperature sensors of the ball valves (A-2 and F-2). 2. Unscrew both nuts of the sensor (G). 3. Unscrew the nuts above and beneath the pump or the return pipe.
  • Page 14 Change of the flow line [specialist] Retrofitting of the mixing valve Loosen the screw (1). Take off the rotary knob (2) from the cock rod. Loosen the screws (3). Remove the cover plate (4). Loosen the two screws (5). Remove the front plate (6). Extract the sealing bush (7) with the cock plug (8) from the housing of the mixing valve.
  • Page 15 Mixing valve with flow on the right Mixing valve with flow on the left 16. Turn the cover plate (4) in such a way that the marking PAW is at the bottom and that the scale is positioned as shown in the figure above.
  • Page 16: Mounting And Installation [Specialist]

    Mounting and installation [specialist] 5 Mounting and installation [specialist] The HeatBloC® can either be mounted on a distribution manifold or on a wall bracket. The distribution manifold and the wall bracket are optional accessories and are thus not included in the scope of delivery.
  • Page 17: Installation And Commissioning Of The Heatbloc

    Mounting and installation [specialist] 5.1 Installation and commissioning of the HeatBloC® The HeatBloC® can be mounted on a PAW modular distribution manifold (not included in the scope of delivery). NOTICE Verify if the grounding cable holds securely in place at the differential pressure sensor! ►...
  • Page 18 Mounting and installation [specialist] 1. Remove the station from the packaging. 2. Take off the thermometer handles. 3. Note regarding the HeatBloC® with Wilo pump: Dismount the insulating front shell of the controller and push the insulating back shell backwards. 4.
  • Page 19 Mounting and installation [specialist] 12. Connect the HeatBloC® to the installation by using the pipes. The installation to the piping must be carried out without any tension. Only MC45: The rear connection can be accessed from below. 13. Repeat these steps for all the HeatBloC®s that are mounted.
  • Page 20: Cabling

    Mounting and installation [specialist] 5.2 Cabling 1. For DN 25 / 32: Loosen the screws of the controller insulation and dismount the insulating front shell of the controller. For DN 40 / 50: Connect the actuator (only MC43), the temperature sensors (only MC41) and the differential pressure sensor to the controller (see below).
  • Page 21 Mounting and installation [specialist] 6. If you do not mount the optional communication set, continue with point 10. 7. If you additionally mount the optional communication set, run the bus line of the communication set to the first (left) controller. For this purpose, disconnect the plug of the bus line from the mini PC of the communication set.
  • Page 22: Accessories

    PC is equipped with a power supply unit to assure the power supply and establishes its own local WLAN network. With a smartphone and the corresponding PAW Connect app, you can establish a connection with your installation via this WLAN and set parameters or read out current values.
  • Page 23: Accessories: Cutting-Ring Compression Fitting (Not Included In The Scope Of Delivery)

    Mounting and installation [specialist] 5.3.3 Accessories: Cutting-ring compression fitting (not included in the scope of delivery) The connection to the heating installation can be carried out fast, pressure-proof and without soldering if you use the optionally available compression fittings. 1. Push the union nut ② and the cutting ring ③ onto the copper pipe ①.
  • Page 24: Pipe Sets For Mc45

    Mounting and installation [specialist] 5.3.5 Pipe sets for MC45 Description Item no. Piping for a single HeatBloC® MC45 36092KS4 Piping for two HeatBloC®s MC45 36092KS2 Extension pipe set for three HeatBloC®s MC45 36092KS3 Please observe the separate instructions. The pipe sets are not included in the scope of delivery. 994536093x-mub-en - V02 12/2024...
  • Page 25: Maintenance [Specialist]

    Maintenance [specialist] 6 Maintenance [specialist] 6.1 Disassembly of the strainer out of the differential pressure sensor (DPS) NOTICE A maintenance of the differential pressure sensor may be necessary in different time intervals. The duration of the time interval depends on the quality of the heating water. A maintenance is necessary no later when the measurements of the differential pressure sensor vary strongly and a stable regulation of the pump is no longer possible.
  • Page 26 Maintenance [specialist] 5. Dismount the differential pressure sensor by removing the flat plug from the clip. The flat plug is equipped with a clamp spring. Press it in before removing the flat plug. 6. Finally remove the clip laterally out of the fitting. 7.
  • Page 27: Installation Of The Strainer Into The Differential Pressure Sensor (Dps)

    Maintenance [specialist] 6.2 Installation of the strainer into the differential pressure sensor (DPS) The installation is carried out in reverse order: 1. Put the new sealing cap on the sensor. The two bulges (see circle) must point towards the pump side. 2.
  • Page 28 Maintenance [specialist] 5. Put the brass fitting with the new sealings between the ball valves F-2 and A-2. Attention: The sticker with the pump symbol must point to the pressure side, see illustration. 6. Put the installation into operation again: - Open the previously closed ball valves and check the tightness of the measuring point of the differential pressure sensor.
  • Page 29: Scope Of Delivery [Specialist]

    Scope of delivery [specialist] 7 Scope of delivery [specialist] NOTICE Serial number Complaints and requests/orders of spare parts will only be processed with information on the serial number! The serial number is placed on the return pipe of the product. 7.1 Insulation and controller 12/2024 994536093x-mub-en - V02...
  • Page 30: Hydraulics

    Scope of delivery [specialist] 7.2 Hydraulics Position Spare part Item number Controller MCom 3.4 N00143 Thermometer handle for ball valve 1" + 1¼" N00248 Dial thermometer, red, d = 50 mm, 0 - 120 °C N00242 Dial thermometer, blue, d = 50 mm, 0 - 120 °C N00243 Actuator SR5, 230 V / 50 Hz, 5 Nm, 140 s / 90°...
  • Page 31 Scope of delivery [specialist] Position Spare part Item number Insulation HeatBloC® DN 25 N00016 Thermometer ball valve DN 25, flange 1" x 1" int. thread N00244 Union nut G1½", wrench size 52, octagonal N00269 Sealing kit, 44.0 x 32.0 x 2.0, 1", for thread connection 1½", 10 pieces N00131 3-temperature mixing valve DN 25, flange F1"...
  • Page 32: Technical Data

    Technical data 8 Technical data HeatBloC® MC45 DN 25 (1") Dimensions Centre distance 125 mm Width insulation 250 mm Height insulation 500 mm Installation length 340 mm Connections Connection consumer 1" int. thread Connections generator 1½" ext. thread, flat-sealing Operating data Max.
  • Page 33: Dimensional Drawing Dn 25

    Technical data 8.1 Dimensional drawing DN 25 8.2 Pressure drop and pump characteristic curves (1): 100% return (2): 100% low-temperature flow (3): 100% high-temperature flow 12/2024 994536093x-mub-en - V02...
  • Page 34: Disposal

    Disposal 9 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. The addresses can be obtained from your city or communal administration.
  • Page 35 Disposal 12/2024 994536093x-mub-en - V02...
  • Page 36 Böcklerstraße 11 31789 Hameln, Germany Translation of the original instructions www.paw.eu We reserve the right to make technical changes without notice! Phone: +49-5151-9856-0 Printed in Germany – Copyright by PAW GmbH & Co. KG Fax: +49-5151-9856-98 12/2024 994536093x-mub-en - V02...

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