278 gr. circolazione solare con upm3 15-75 Caleffi 278750HE

278 gr. circolazione solare con upm3 15-75 Caleffi 278750HE Gruppo di circolazione per impianti solari Caleffi 278750HE Descrizione: Solar pump stations are used on the primary circuit of solar thermal water heating systems to control the temperature of the hot water storage. They are pre-assembled and leak-tested. The pump inside the unit is activated by the signal from a differential temperature controller. The unit contains the functional and safety devices for optimum circuit control. They are available with both supply and return connection or with return connection only. The iSolar™ PLUS temperature differential controller, code 257260A (optional), is suitable for management and control of 10 preconfigured solar thermal system arrangements installed in an optional insulation jacket (code 278011) that mounts to the top of the pump station for a nice clean assembly and simplified wiring. Components include three-speed pump with wide flow rate range, safety relief valve, ball valves with built-in flow checks in return (and supply/flow for dual-line models, not available in drainback model), temperature gauges in return (and supply/flow for dual-line models), pressure gauge, manual air vent (dual-line models only), expansion tank connection, connections for flushing and filling, and foam insulation. Caratteristiche: - Alimentazione: 230 V (ac);
- Pmax d’esercizio: 10 bar;
- Campo temperatura flussometro: -10÷110°C;
- Campo di temperatura valvola di sicurezza: 30÷160°C;
- Taratura valvola di sicurezza: 6 bar (per altre tarature vedere serie 253 utilizzando l’adattatore codice F21224);
- Max percentuale di glicole: 50%. Composto da: - pompa di circolazione Solar;
- valvola di sicurezza per impianti solari serie 253;
- rubinetto di carico/scarico;
- raccordo portastrumenti con manometro;
- flussometro;
- termometro di ritorno;
- valvola di intercettazione e ritegno;
- 2 portagomma;
- coibentazione a guscio preformata.