If the temperature at point D is low, the thermostat will close valve 1 and open valve 2, bringing more hot water into the system. ... snow melting system Piping and condensate return system Controls Condensate return pump Water circulating pump Cost of PRV station 920 ... mixer assembly (welded) c) Immersion thermostat d) Wiring e) Piping-fittings- valves-etc. f ) Erection labor Where a standby heating boiler is ... HARRISON D. GOODMAN Consulting Engineer New York, N. Y. FOR.
|Title||:||Air Conditioning, Heating and Ventilating|