Anti-condensation circulation unit 8 series ACCREDITED ISO 9 F 654 ISO 9 No. CALEFFI 5/4 GB replaces dp 5/ Function The anti-condensation circulation unit performs the function of connecting the solid fuel to the distribution manifold, controlling the temperature to the, to avoid condensation by means of the built-in thermostatic sensor. The unit also enables connecting the to the inertial storage or directly to the user. Versions with centre distances of 9 and 5 mm have been specifically designed for the connection to the separator-distribution manifold 559 series. 5 mm version can also be connected to the manifold for central heating s 55 series. Product range Code 86.AL 86.AL 86.AL 86.AL 864.UP 865.UP 866.UP 867.UP Generator on LH side x x x x Generator on RH side x x x x Centre distance 9 mm x x x x Centre distance 5 mm x x x x ALPHA L 5-6 pump x x x x UPL 5-95 pump x x x x Size DN 5 ( ) x x x x x x x x Technical specifications aterials Anti-condensation valve Body: brass EN 98 CB75S Cap: brass EN 64 CW64N Obturator: PSU Spring: stainless steel EN 7- (AISI ) Seal: EPD Union seal: non-asbestos fibre Wax thermostatic sensor Shut-off valves Body: Seal: brass EN 65 CW67N non-asbestos fibre Other accessories Pipe: copper Check valve: - body: brass EN 64 CW64N - obturator: PPAG4 Performance edium: water, glycol solutions ax. percentage of glycol: 5% ax. working pressure: bar Working temperature range: 5 C Temperature gauge scale: C Connections: - circuit: F (ISO 8-) with union - circuit: F (ISO 8-) - connections centre distance: - cod. 86.AL, 86.AL, 864.UP, 865.UP: 9 mm - cod. 86.AL, 86.AL, 866.UP, 867.UP: 5 mm Code completion Setting C 55 C 6 C 7 C 4 5 6 7 Anti-condensation valve Setting temperature (Tset): C, 55 C, 6 C, 7 C Setting accuracy: ± C By-pass complete closing temperature: Tmix=Tset+ C=Tr Pump Pump: model ALPHA L 5-6 (or UPL 5-95) aterial: - body: cast iron GG 5/ Electric supply: V-5 Hz ax. ambient humidity: 95% ax. ambient temperature: 8 C Protection class: IP 44 (IPXD) Pump centre distance: mm Pump connections: / with nut Technical specifications of insulation aterial: closed cell expanded PE-X Thickness: mm Density: - inner part Kg/m - outer part 5 Kg/m Thermal conductivity (DIN 56): - at C,8 W/(m K) - at 4 C, W/(m K) Coefficient of resistance to the diffusion of water vapour (DIN 565): > Working temperature range: C Reaction to fire (DIN 4): class B
Head available at the unit connections H (m w.g.) 8 6 5 4 (kpa) 8 ALPHA L 5-6 6 5 4,5,5,5 G (m /h) H (m w.g.) (kpa) 9 UPL 5-95 9 8 8 7 7 6 5 4,5,5,5,5 4 4,5 5 G (m /h) 6 5 4 Note: The ALPHA L pump can operate with constant or proportional pressure control, which adapts the performance to the requirements. For further details, see the installation instruction sheet of the pump supplied in the package. Note: The UPL pump can operate with constant or proportional pressure control, which adapts the performance to the requirements. For further details, see the installation instruction sheet of the pump supplied in the package. Dimensions Characteristic components Hydraulic diagram Code 86.AL 86.AL 864.UP 866.UP 86.AL 86.AL 865.UP 867.UP A B 75 75 8 8 75 75 8 8 C 9 5 9 5 9 5 9 5 D E 8 8 5 5 F 47 47 47 47 47 47 47 47 G 9 9 9 9 9 9 9 9 H 7 7 7 7 7 7 7 7 ass (kg) 6,6 6,7 8, 8, 6,6 6,7 8, 8, ) Anti-condensation valve ) High-efficiency pump ) Shut-off valves 4) Check valve 5) Flow temperature gauge 6) Return temperature gauge 7) Insulation Code completion Setting C 55 C 6 C 7 C 4 5 6 7
Wooden biomass and condensation build-up Wooden solid fuel contains a variable moisture percentage depending on the type (logs, pellets, woodchips etc.) and seasoning. Water vapour is released during the solid fuel drying phase inside the combustion chamber. The presence of cold zones in the or flue gas chimney can lower the temperature of the flue gas down to the dew point, causing condensation to occur. Water vapour condenses on the surfaces, together with soot and part of the unburnt hydrocarbons contained in the flue gas, producing deposits and tar. These substances stick to the walls of the, covering most of the inner surfaces. In addition to being dangerous due to its flammability, tar is damaging to the integrity of the and limits the efficiency of the flue gas- water exchanger. By keeping the walls at the highest possible temperature, the anti-condensation circulation unit limits the formation of these substances, thereby increasing the combustion efficiency, controlling the emissions into the environment and prolonging the life. Flue gas and emission control Accumulation of ash and residues Primary and secondary air: Combustion efficiency SF SR ANTI-CONDENSATION CIRCULATION UNIT Zones of condensation forming: Deposits and tar Corrosion Reduction in heat exchanger efficiency Flammability Operating principle The thermostatic sensor (), completely immersed in the medium, controls the movement of an obturator (8) that regulates the s in by-pass (9) and toward the (). At the start-up of the heat, the circulation unit recirculates the water so as to bring the up to temperature as quickly as possible (fig. ). When the temperature Tf exceeds the setting of the anti-condensation valve Tset, the unit s cold port () starts opening to produce the water mixing Tmix: in this phase the loading begins (fig. ). When the temperature to the Tmix is greater than the setting of the anti-condensation valve by approximately C, the by-pass port (9) closes and water s to the at the same temperature as the (fig. and fig. 4). Tf > Tset START OF SYSTE LOADING by-pass open open Tf > Tset, Tr < Tset, Tmix=Tset Tmix = Tset + C BY-PASS CLOSING by-pass closed open Tf > Tmix = Tset + C, Tmix=Tr Tf Tset SYSTE START UP TRANSIENT by-pass open closed Tf Tset, Tmix=Tf Tmix > Tset + C SYSTE LOADED by-pass closed open Tf > Tmix > Tset + C, Tmix = Tr 4 Tf = Flow temperature Tset = Anti-condensation setting temperature Tmix = ixed water temperature of Tr = System temperature
Construction details Compact construction The unit features all the functional components assembled in a kit and ready for installation. Versions with centre distances of 9 and 5 mm have been specifically designed for the connection to the separator-distribution manifold 559 series. 5 mm version can be also applied to the manifold for central heating 55 series. Installation The anti-condensation circulation unit can be installed on both sides of the respecting the directions indicated on the body. Installation is preferable with the pipes positioned vertically (with axis of the thermostatic sensor horizontal). Installation with the pipes positioned horizontally (with axis of the thermostatic sensor vertical) is however allowed. Anti-condensation valve The device incorporates a thermostatic sensor to control the temperature of water ing to the solid fuel so as to prevent condensation. The sensor has been specifically realised to be removed from the valve body for maintenance or replacement if necessary. Check valve This device prevents reverse circulation of the medium. The check valve is useful when the circulation unit is used on its own for direct connection to the or for connection to a manifold not equipped with a hydraulic separator. Application The anti-condensation circulation unit is used to connect solid fuel s to the user according to the following design logics: - Connection to the primary side of the 559 series SEPCOLL separator-manifold. The solid fuel is used as a single energy source (primary side) and is therefore connected upstream of the hydraulic separation zone of the 559 series SEPCOLL unit (fig. ). - Connection to inertial storage. The unit performs the function of connection and hydraulic circulation between the solid fuel and the inertial storage, both in direct mode and with coil exchanger immersed in the storage (fig. ). Serie 67 V ±% 6 VA Amb. temp. range - 55 C Opening/closing time 5 s 9 rotation IP 65 Open B AUTO AN Open A Cod. 67 - Connection to manifold with storage in parallel The unit connects the to the manifold for direct supply to the secondary circuits or in parallel to the inertial storage (fig. ).
- Direct connection to the. The unit can be directly connected to the, using the pump as a circulator for the entire (fig. 4). 4 - Connection to the secondary side of the 559 series SEPCOLL separator-manifold. When the solid fuel is coupled to another, which may already exist in the, one of the secondary side outlets of the SEPCOLL unit can be used as the inlet of the solid fuel. The solid fuel is connected to the manifold which receives the of the primary side. The function of the hydraulic separation zone, with reduced head losses, remains the same even with this connection logic. The regulating unit of the secondary circuits control the temperatures in the respective circuits (fig. 5). 5 In the event of multiple presence of s, apply the current regulations.
aintenance and setting modification The sensor can easily be removed for maintenance or setting change, according to the following procedure: - shut off the pipes to isolate the anti-condensation circulation unit from the ; - if the unit is installed with the pipes positioned vertically (with axis of the thermostatic sensor horizontal), remove the anti-condensation valve from the unit; - unscrew the cap of the anti-condensation valve; - take out the unit consisting of the spring, obturator and thermostatic sensor, noting the position of each component; - perform maintenance or replace the sensor with a spare part, fitting it in the same position; - re-fit the unit consisting of the spring, obturator and thermostatic sensor inside the valve body; - screw the cap back onto the valve body; - if the unit is installed with the pipes positioned vertically (with axis of the thermostatic sensor horizontal), re-fit the anti-condensation valve onto the unit; - if the thermostat is replaced with a spare part featuring a different setting, apply the label indicating the new setting to the cap, label supplied in the spare part packaging. Application diagram Solid fuel, with inertial storage. Safety devices to be chosen according to current regulations Deaerator Dirt separator Pump Shut-off valve Expansion vessel Check valve otorised mixing valve Pressure reducing valve Regulator T Filling unit Back preventer Safety relief valve Dirt separator for vertical pipes Deaerator for vertical pipes Hydraulic separator Y-strainer Thermostatic mixing valve
Solid fuel, connection to central heating manifold and inertial storage in parallel. Safety devices to be chosen according to current regulations Solid fuel, direct supply to the. Safety devices to be chosen according to current regulations RESIDENTIAL DEVICE
Solid fuel, supplementary gas boiler, DHW production with solar thermal. Safety devices to be chosen according to current regulations SPECIFICATION SUARY 8 series Anti-condensation circulation unit. Configuration with on right side (or left side). Connections to circuit F (ISO 8-), connections to circuit F (ISO 8-) with union. Connections centre distance 9 mm (and 5 mm) fitted for 559 series SEPCOLL. 5 mm centre distance fitted for central heating 55 series manifold. edium water and glycol solutions; maximum percentage of glycol 5%. aximum working pressure bar. Working temperature range 5 C. Temperature gauge scale C. Complete with: anti-condensation valve with brass body, brass cap, PSU obturator, stainless steel spring, EPD seal, union seal in non-asbestos fibre, wax thermostatic sensor, setting temperatures C, 55 C, 6 C, 7 C, setting accuracy ± C, by-pass complete closing temperature Tset + C; shut-off valves with brass body, non-asbestos fibre seal; copper connection pipe; PPAG4 check valve; high-efficiency pump model ALPHA L 5-6 (and UPL 5-95), cast iron body, electric supply V - 5 Hz, maximum ambient humidity 95%, maximum ambient temperature 8 C, protection class IP 44 (IPXD), pump centre distance mm, pump connections / with nut. With insulation. We reserve the right to change our products and their relevant technical data, contained in this publication, at any time and without prior notice. Caleffi S.p.A. S.R. 9 n. 5 8 Fontaneto d Agogna (NO) Italy Tel. +9 849 Fax +9 867 info@caleffi.com www.caleffi.com Copyright 4 Caleffi