TACOTHERM FRESH MEGA CONNECT

Transcription

1 ACOHERM FRESH MEGA CONNEC FRESH HO WAER SAION WIH HIGH-EFFICIENCY PUMPS Fresh hot water station for hygienically heating drinking water in accordance with the continuous flow principle with innovative pump and regulation technology ADVANAGES Efficient Simple and fast commissioning thanks to innovative pump and regulation technology Safe Integrated safety subassembly, cold water connection with soft-close valve, components and materials suitable for use with drinking water Variable Choice of models with and without circulating pump Simple Use of cutting-edge pump technology as well as high transmission performance and low pressure loss thanks to optimized piping DESCRIPION he acoherm Fresh Mega Connect fresh hot water station is used for heating drinking water on demand in accordance with the cyclical principle in conjunction with a storage tank for existing and new heating systems, wood-burning boilers, heat pumps and solar systems. he station replaces the storage of hot drinking water in an additional storage unit and thus provides a high degree of protection against Legionella by avoiding water stagnation. SYSEM/BASIC DIAGRAM INSALLAION POSIION Vertical wall-mounting in the vicinity of the hot water storage tank or on the tank itself. OPERAION Drinking water is heated to the defined dispensing temperature in the acoherm Fresh Mega Connect in accordance with the continuous flow principle. he integrated heat exchanger is supplied with as little hot water from the storage tank as is required to maintain a constant dispensing temperature. Cutting-edge pump technology is used with wireless connection to the regulating components. Setpoints can be adjusted for domestic hot water and circulation directly at the pumps using simple menu guidance. he station comes in a choice of models with and without circulating pump. BUILDING CAEGORIES Apartment blocks Housing estates Multiple dwelling units Smaller public buildings Facilities with partial use for example barracks, camping sites, etc. + -

2 ACOHERM FRESH MEGA CONNEC / C FRESH HO WAER SAION SPECIFICAION EX See ECHNICAL DAA General acoherm Fresh Mega Connect controller with Wireless Connect Weight (empty):. 9 kg Overall dimensions (incl. hood): W 0 mm H 8 mm D 9 mm Material Base plate: Galvanized sheet steel Rear panel and hood: EPP design insulation Pumps: Primary: PPS Secondary: PPS (plastic, approved for drinking water) Valve housing: Brass Pipes: stainless steel.0 Plate heat exchanger: Plates and connector pieces: Stainless steel.0 Heat exchanger solder: % copper (stainless steel solder model available on request) Seals: AFM flush seal Primary side Operating temperature O max : 9 C Operating pressure P O max : 0 bar Primary pump: Grundfos ALPHA FWM Secondary side Modules on secondary side with drinking water certifications Operating temperature O max : 8 C Operating pressure P O max : 9 bar Safety valve (intrinsic safety): 0 bar discharge pressure and 9 bar closing pressure Circulation pump: Grundfos ALPHA DHW Performance data See design diagram Electrical connection data Mains voltage: 0 VAC ± 0 % Mains frequency: Hz Power consumption: max. 80 W Protection type: IP 0 Flow media Heating water (VDI 0; SWKI B 0-0; ÖNORM H 9 ) Cold water YPE OVERVIEW acoherm Fresh Mega Connect and Mega Connect C Fresh hot water station Order no. Rp Version Version " IG Without circulating pump..000 " IG C With circulating pump * * hermostatic mixing valve for dual-zone stratification: see accessories DIMENSIONAL DRAWING 8 0 PW PRODUC DIAGRAM Primary hot water flow Primary hot water return Circulation (C version) Cold water connection Hot water connection Primary pump with integrated regulation Circulation pump (C version) 8 Flow rate sensor 9 Safety valve 0 Heat exchanger Sensor box

3 ACOHERM FRESH MEGA CONNEC / C FRESH HO WAER SAION FLOW AND PRESSURE LOSS DIAGRAMS COLD WAER HEAING A 0K ( C) D) Secondary pressure loss C) Return temperatures Pressure loss for cold water and circulation (secondary) Pump characteristic in circulation - Speed stage Pump characteristic in circulation - Speed stage Pump characteristic in circulation - Speed stage Pump characteristic in circulation - Speed stage Pump characteristic in circulation - Speed stage Pump characteristic in circulation - Speed stage Return temperature ( C) C 0 C C A) Cold water heating at 0K B) Residual head C 0 C C Output kw ( p) EXAMPLE FOR INERPREING HE FLOW RAE AND PRESSURE LOSS DIAGRAMS Given Hot water dispensing volume:. l/min Primary heating flow temperature: 0 C Sought Primary heating return temperature in C Secondary pressure loss in mbar Primary pressure loss in mbar Approach In Diagram A) the hot water demand at the intersection point of the dispensing volume of. l/min and primary flow temperature of 0 C is 0 l/h. In Diagram B) the primary pressure loss for a hot water demand of 0 l/h is 0 mbar. he pump delivery head is 0 mbar, discounting the pressure loss this gives rise to a residual pump head of 00 mbar (Δp). In Diagram C) the primary return temperature for a given dispensing volume of. l/min and the selected flow temperature of 0 C is C. In Diagram D) the secondary pressure loss for the given data is 80 mbar

4 ACOHERM FRESH MEGA CONNEC / C FRESH HO WAER SAION FLOW AND PRESSURE LOSS DIAGRAMS COLD WAER HEAING A K (0... C) D) Secondary pressure loss Pressure loss for cold water and circulation (secondary) Pump characteristic in circulation - Speed stage Pump characteristic in circulation - Speed stage Pump characteristic in circulation - Speed stage Pump characteristic in circulation - Speed stage Pump characteristic in circulation - Speed stage Pump characteristic in circulation - Speed stage C) Return temperatures Return temperature ( C) 0 C 9 C 0 C C 0 C 9 C A) Cold water heating at K B) Residual head Primary pressure loss 0 C C 0 C C C 0 C Output kw Pressure loss (l/min) NOE REQUIREMENS FOR FLOW MEDIA he stations heat interface units use a copper-soldered stainless steel plate heat exchanger as standard. It must be checked prior to use in the framework of system planning whether the issues of corrosion protection and scale formation have been sufficiently taken into account in accordance with DIN and current drinking water analyses according to DIN EN 80. See datasheet Plate Heat Exchanger Requirements - Limit Values for Drinking Water Quality.

5 ACOHERM FRESH MEGA CONNEC / C FRESH HO WAER SAION ACCESSORIES HERMOSAIC MIXING VALVE FOR DUAL-ZONE SRAIFICAION NovaMix High Capacity for storage water heating, temperature range 0 0 C Order no. DN G E (l/min) k VS k VS.0.0 ¼" 0,,9 E = Extracted (outlet) quantity at Δp =,0 bar k VS = without check valve k VS = with check valve Subject to modification. 0/08 CONAC AND FURHER INFORMAION ACONOVA.COM aconova Group AG Neunbrunnenstrasse 0 CH-800 Zurich + F + 0 group@taconova.com