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Related Manuals for PAW FriwaMidi DN 20
Summary of Contents for PAW FriwaMidi DN 20
- Page 1 PAW GmbH & Co.KG Böcklerstr. 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 Domestic hot water modules FriwaMidi – DN 20 FriwaMaxi – DN 25 2020/06 99640x5xx-mub-en – V01...
- Page 2 Item no. 99640x5xx-mub-en - Version V01 - Issued 2020/06 PAW GmbH & Co.KG Translation of the original instructions Böcklerstraße 11 We reserve the right to make technical changes without notice! 31789 Hameln Printed in Germany – Copyright by PAW GmbH & Co. KG Germany 99640x5xx-mub-en – V01 2020/06...
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Page 3: Table Of Contents
1 General Information Contents General Information ......................4 Scope of these instructions ..................4 About this product ......................5 Designated use ......................5 Safety instructions ......................6 Product description ......................8 Dimensioning and planning ....................9 Dimensioning of the tank .................... 10 Water quality requirements .................. -
Page 4: General Information
1 General Information Carefully read these instructions before installation and commissioning. Save these instructions in the vicinity of the installation for future reference. 1 General Information Scope of these instructions These instructions describe the installation, commissioning, function and operation of the domestic hot water modules FriwaMidi and FriwaMaxi. -
Page 5: About This Product
The technical limit values specified in these instructions must be observed. Only use PAW accessories with the domestic hot water module. Using the station contrary to its designated use will invalidate all liability claims. -
Page 6: Safety Instructions
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]. - Page 7 2 Safety instructions ATTENTION Material damage due to mineral oils! Mineral oil products cause permanent damage in the material, resulting in its sealing characteristics getting lost. We cannot be held liable for damage caused by seals damaged in this way, and nor will we give warranty replacement for such parts. ...
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Page 8: Product Description
3 Product description 3 Product description Connections Primary side: return to the buffer tank Secondary side: hot water circulation, return Secondary side: cold water inlet Secondary side: hot water outlet Primary side: flow from the buffer tank Equipment Ball valve with check valve Primary pump Non-return valve with drain valve Circulation pump... -
Page 9: Dimensioning And Planning
4 Dimensioning and planning 4 Dimensioning and planning The FriwaMidi and FriwaMaxi can only work flawlessly if the installation meets certain requirements. Please take some time to plan the assembly. WARNING Danger of scalding due to hot water! Undesirable circulation of water in the primary circuit can cause the exit of water of up to 90 °C at the withdrawal point. -
Page 10: Dimensioning Of The Tank
4 Dimensioning and planning Dimensioning of the tank The following table helps you to calculate the approximately required volume of the buffer tank. Temperature in Domestic hot water Required tank volume the buffer tank temperature set at the per litre of hot water controller 50 °C 45 °C... -
Page 11: Water Quality Requirements
4 Dimensioning and planning Water quality requirements The domestic hot water modules constructively decrease the precipitation of chalk in the heat exchanger. For installations with an elevated total hardness of the potable water and/or high temperatures, a water treatment is recommended. The choice of the heat exchanger depends on the requirements of the installation location. - Page 12 4 Dimensioning and planning Ammonium (NH < 2 within 2-20 24 hours > 20 Chloride (Cl < 100 no limit 100-200 200-300 > 300 Free chlorine (Cl < 1 within 5 hours > 5 Hydrogen sulphide < 0.05 no limit >...
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Page 13: Circulation Mode
5 Circulation mode 5 Circulation mode The domestic hot water modules FriwaMidi and FriwaMaxi are optionally equipped with a circulation pump. The FriwaMidi and FriwaMaxi without circulation can be subsequently equipped with a circulation set (item no. 640412). For the operation of the circulation pump, three possible operation modes are stored in the Circulation controller (see controller instructions, chapter •... -
Page 14: Mounting And Installation [Specialist]
6 Mounting and installation [specialist] 6 Mounting and installation [specialist] The domestic hot water modules FriwaMidi and FriwaMaxi must only be connected to the storage tank by separate connections for the flow and return. External pumps must not be installed between the domestic hot water module and the buffer tank. The circulation of water causes considerable temperature fluctuations. - Page 15 6 Mounting and installation [specialist] WARNING Risk to life and limb due to electric shock! Prior to commencing electrical work on the controller, pull the mains plug! Only after completing all installation work, plug the mains plug of the controller into a socket.
- Page 16 6 Mounting and installation [specialist] Connect the domestic hot water module with the installation by using the piping according to the Pipe distance to the wall adjacent figure. (primary) = 95 mm Primary side: Return to the buffer tank, Connection FriwaMidi: 1½" external thread, Connection FriwaMaxi: 2"...
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Page 17: Commissioning [Specialist]
7 Commissioning [specialist] 7 Commissioning [specialist] NOTICE Slowly open the valves in the pipes and in the module, in order to prevent pressure surges. Functioning check valve The ball valves (A) and (N) in the primary circuit are equipped with a check valve, in order to avoid unwanted gravity circulation. -
Page 18: Filling The Primary Circuit
7 Commissioning [specialist] Filling the primary circuit WARNING Danger of scalding due to hot water! The system is under pressure. By opening the vent valve, hot water with a temperature of up to 90 °C may exit and cause personal injury. ... -
Page 19: Commissioning Of The Controller
7 Commissioning [specialist] Commissioning of the controller WARNING Risk to life and limb due to electric shock! Check whether the sensors and pumps have been connected to the controller and the controller housing is closed. Only under these circumstances, the mains plug of the controller can be plugged into a socket. - Page 20 7 Commissioning [specialist] Open a withdrawal point for domestic hot water (for example a tap) with a flow rate of at least 10 l/min and let the water run for about 2 minutes to vent the secondary circuit. Close all withdrawal points of the secondary circuit afterwards.
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Page 21: Maximum Withdrawal Flow Rate
7 Commissioning [specialist] Maximum withdrawal flow rate The following diagram illustrates the maximum withdrawal flow rate depending on the tank temperature with a preset hot water temperature of 45 °C at the tap. The integrated control avoids temperature drops as long as the maximum flow rate is not exceeded. Domestic hot water temperature: 45 °C Temperature of the buffer tank... - Page 22 7 Commissioning [specialist] The following diagram illustrates the maximum withdrawal flow rate at a domestic hot water temperature of 45 °C at the tap, after the addition of cold water of 10 °C. The domestic hot water temperature set at the controller is of 60 °C. Domestic hot water temperature: 45 °C after heating to 60 °C and addition of cold water (10 °C)
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Page 23: Adjustment Of The Temperature
7 Commissioning [specialist] Adjustment of the temperature Set the desired (maximum) domestic hot water temperature at the controller under Domestic "Main menu / Hot water / Nominal temperature“ (see controller instructions, chapter hot water WARNING Danger of scalding due to hot water! In order to avoid scalding at the tap, the maximum domestic hot water temperature set at the controller must not exceed 60 °C. - Page 24 7 Commissioning [specialist] Domestic Maximum flow rate hot water Tempera- from the DHW Max. withdrawal flow Heat transfer tempera- ture in the module with the set rate at the tap with a capacity of the ture set at buffer tank domestic hot water temperature of 45 °C DHW module...
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Page 25: Maintenance
8 Maintenance 8 Maintenance Optimal operation of the station In order to guarantee an optimal control, no additional hydraulic pressure losses should occur on the primary side (f. ex. due to the installation of a mud strainer, a strainer or a mixing valve). NOTICE Hygiene recommendation At temperatures below 60 °C, legionella bacteria can occur. -
Page 26: Disposal
9 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. -
Page 27: Spare Parts [Specialist]
10 Spare parts [specialist] 10 Spare parts [specialist] NOTICE Complaints and requests/orders of spare parts will only be processed with information on the serial number! The serial number is placed in the lower right corner of the support sheet of the station. 10.1 Spare parts control and insulation FriwaMidi without circulation (6405510 + 6405530) / with circulation (6405515 + 6405535) 2020/06... -
Page 28: Spare Parts Hydraulics
10 Spare parts [specialist] 10.2 Spare parts hydraulics FriwaMidi without circulation (6405510 + 6405530) / with circulation (6405515 + 6405535) *only included in the scope of delivery of 6405515 and 6405535 99640x5xx-mub-en – V01 2020/06... -
Page 29: Spare Parts Control And Insulation Friwamaxi Without Circulation (6406510 + 6406530) / With Circulation (6406515 + 6406535)
10 Spare parts [specialist] 10.3 Spare parts control and insulation FriwaMaxi without circulation (6406510 + 6406530) / with circulation (6406515 + 6406535) 2020/06 99640x5xx-mub-en – V01... -
Page 30: Spare Parts Hydraulics
10 Spare parts [specialist] 10.4 Spare parts hydraulics FriwaMaxi without circulation (6406510 + 6406530) / with circulation (6406515 + 6406535) *only included in the scope of delivery of 6406515 and 6406535 99640x5xx-mub-en – V01 2020/06... - Page 31 10 Spare parts [specialist] Position Spare part Item no. Heat exchanger, copper solder, with seals, N00278 for station 6405510 and 6405515 Heat exchanger, copper solder, with seals, N00280 for station 6406510 and 6406515 Heat exchanger, coated, with seals, N00279 for station 6405530 and 6405535 Heat exchanger, coated, with seals, N00281 for station 6406530 und 6406535...
- Page 32 10 Spare parts [specialist] Optional accessories Illustration Scope of delivery Item no. Circulation set for internal retrofitting 640412 (FriwaMidi/Maxi) with high-efficiency pump Grundfos UPM3 15-70 CIL3 with piston valve and non-return valve Return distribution set DN 32 for FriwaMidi 640423 3-way valve with actuator value: 15 Return distribution set DN 32 for FriwaMaxi...
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Page 33: Technical Data
11 Technical data 11 Technical data Dimensions FriwaMidi FriwaMaxi Height (with insulation) 795 mm Width (with insulation) 602 mm Depth (with insulation) 298 mm Centre distance top 120 mm Centre distance bottom 100 mm Pipe connections Primary circuit (storage tank circuit) 1½"... -
Page 34: Pressure Drop Characteristics Friwamidi
11 Technical data 11.1 Pressure drop characteristics FriwaMidi Flow rate [m³/h] 11.2 Pressure drop characteristics FriwaMaxi Flow rate [m³/h] 99640x5xx-mub-en – V01 2020/06... -
Page 35: Commissioning Report
12 Commissioning report 12 Commissioning report Installation operator Location of installation Serial numbers: FriwaMidi FriwaMaxi Flow rate sensor Controller Software version Pipes primary ⌀ Pipes secondary ⌀ Other additionally installed ⃞ Circulation set ⃞ Return distribution set components ⃞ Others: Have both circuits been flushed and vented correctly? (no air noises in the pump) ⃞... - Page 36 PAW GmbH & Co.KG www.paw.eu Böcklerstraße 11 Phone: +49 (0) 5151 9856 - 0 31789 Hameln - Germany Fax: +49 (0) 5151 9856 - 98 99640x5xx-mub-en – V01 2020/06...