http://plasticrepair.es/?esminer=citas-por-internet-parejas&275=d7 This system provides hot water for showers and other areas in the accommodation spaces. The system consists of two hot water circulation pumps (one working + one standby), two geysers (heaters), normally one working on steam and the other on the electric system.
http://milehiproperty.com/?ki0oss=Accounting-treatment-for-stock-option&7f2=34 The electric heater is controlled by a thermostat which maintains a temperature of about 60-degree celsius. The steam heater is controlled by the thermostatic valve at steam inlet which controls the steam flow to the heater to maintain the temperature at 60-degree celsius. The hot water is continuously circulated from and to the showers in accommodation spaces by two hot water circulation pumps (centrifugal type).