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Summary of Contents for PAW FriwaMidi-DN 20
- Page 1 PAW GmbH & Co. KG Böcklerstr. 11, D-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 2016/07 99640x6xx-mub-de – V08...
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Page 2: Table Of Contents
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 D-31789 Hameln, Germany 99640x6xx-mub-de – V08 2016/07... -
Page 3: 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. The chapters called [specialist] are intended for specialists only. -
Page 4: About This Product
Due to its design, the station must be mounted and operated in a vertical position! The technical data specified in these instructions must be observed. Only use PAW accessories with the domestic hot water module. Improper usage excludes any liability claims. -
Page 5: 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 6 2 Safety instructions NOTICE Material damage due to mineral oils! Mineral oil products cause lasting damage to seals made of EPDM, whereby the sealant properties get lost. We do not assume liability nor provide warranty for damage to property resulting from sealants damaged in this way. ...
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Page 7: 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 8: Dimensioning And Planning
4 Dimensioning and planning 4 Dimensioning and planning The FriwaMidi and FriwaMaxi are domestic hot water modules which heat potable water operating on the principle of a flow-type water heater. The FriwaMidi and FriwaMaxi can only work flawlessly if the installation meets certain requirements. -
Page 9: Dimensioning Of The Tank
4 Dimensioning and planning Dimensioning of the tank Thanks to the following table, you can calculate the approximately required volume of the buffer tank. Temperature in Domestic hot water Required tank volume the buffer tank temperature set at per litre of hot water the controller 50 °C 45 °C... -
Page 10: 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). Three different operating modes of the circulation pump are set at the controller (see controller instructions, menu "Func"... -
Page 11: Assembly And Installation [Specialist]
6 Assembly and installation [specialist] 6 Assembly 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 12 6 Assembly 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! Plug the mains plug of the controller into a socket only after completing all installation work.
- Page 13 6 Assembly and installation [specialist] Use the piping to connect the domestic hot water module to the installation according to the Pipe distance to the wall adjacent figure. (primary) = 95 mm Primary side: return to the buffer tank, connection FriwaMidi: 1½" ext. thread, connection FriwaMaxi: 2"...
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Page 14: Commissioning [Specialist]
7 Commissioning [specialist] 7 Commissioning [specialist] Note! 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 15: 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 16: Commissioning Of The Controller
7 Commissioning [specialist] Commissioning of the controller WARNING Risk to life and limb due to electric shock! Check if the sensors and the pumps are properly connected to the controller and if the controller housing is closed. Only under these circumstances, the mains plug of the controller can be plugged into a socket. - Page 17 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 deaerate the secondary circuit. Close all withdrawal points in the secondary circuit afterwards.
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Page 18: 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 FriwaMaxi Temperature buffer tank... - Page 19 7 Commissioning [specialist] The following diagram illustrates the maximum withdrawal flow rate at a 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 20: Setting The Temperature
7 Commissioning [specialist] Setting the temperature Set the desired (maximum) domestic hot water temperature at the controller under "Para" (see controller instructions, page 24). The maximum domestic hot water temperature must not exceed 60 °C in order to avoid scalding. Primary side The required temperature on the primary side in the buffer tank depends on the desired domestic hot water temperature and on the required tap quantity. -
Page 21: Maintenance [Specialist]
8 Maintenance [specialist] Midi Maxi Midi Maxi Midi Maxi 45 °C 32 l/min 50 l/min 79 kW 122 kW 50 °C 45 °C 50 l/min 77 l/min 121 kW 187 kW 50 °C 40 l/min 62 l/min 45 l/min 70 l/min 111 kW 172 kW 60 °C... -
Page 22: Spare Parts [Specialist]
9 Spare parts [specialist] 9 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. Spare parts control and insulation FriwaMidi (6405640 / 6405641) and FriwaMaxi (6406662 / 6406663) 99640x6xx-mub-de –... -
Page 23: Spare Parts Hydraulics Friwamidi Without Circulation (6405640) / With Circulation (6405641)
9 Spare parts [specialist] Spare parts hydraulics FriwaMidi without circulation (6405640) / with circulation (6405641) *only included in the scope of delivery of 6405641 2016/07 99640x6xx-mub-de – V08... -
Page 24: Spare Parts Hydraulics Friwamaxi Without Circulation (6406662) / With Circulation (6406663)
9 Spare parts [specialist] Spare parts hydraulics FriwaMaxi without circulation (6406662) / with circulation (6406663) *only included in the scope of delivery of 6406663 99640x6xx-mub-de – V08 2016/07... -
Page 25: Technical Data
10 Technical data 10 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 (buffer tank circuit) 1½"... -
Page 26: Pressure Drop Characteristic Curves Friwamidi
10 Technical data 10.1 Pressure drop characteristic curves FriwaMidi Flow rate [m³/h] 10.2 Pressure drop characteristic curves FriwaMaxi Flow rate [m³/h] 99640x6xx-mub-de – V08 2016/07... -
Page 27: Commissioning Report
11 Commissioning report 11 Commissioning report Installation operator Location of installation Serial numbers FriwaMidi FriwaMaxi Flow rate sensor Controller Software version Pipes primary ⌀ Pipes secondary ⌀ Other additionally ⃞ Circulation set ⃞ Return distribution set installed components ⃞ Others: Have both circuits been correctly flushed and vented? (no air noises in the pump) ⃞... - Page 28 PAW GmbH & Co. KG www.paw.eu Böcklerstraße 11 Phone: +49 (0) 5151 9856 - 0 D-31789 Hameln, Germany Fax: +49 (0) 5151 9856 - 98 99640x6xx-mub-de – V08 2016/07...
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