Environmental controls for use in heating and cooling systems, namely, electronic devices for controlling circulator pumps

'circul':15 'control':2,14 'cool':8 'devic':12 'electron':11 'environment':1 'heat':6 'name':10 'pump':16 'system':9 'use':4

Circulator pumps in the field of hydronic heating systems; machinery in the field of domestic hot water recirculation systems, namely, a circulator pump device used in connection with a bypass valve to deliver hot water semi-instantaneously to domestic hot water systems

'bypass':30 'circul':1,22 'connect':27 'deliv':33 'devic':24 'domest':15,40 'field':5,13 'heat':8 'hot':16,34,41 'hydron':7 'instantan':38 'machineri':10 'name':20 'pump':2,23 'recircul':18 'semi':37 'semi-instantan':36 'system':9,19,43 'use':25 'valv':31 'water':17,35,42

1900E SERIES

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