Siemens Building Technology 188-0031 Stat 320734-701 the 25A-HD is a make-up

the 25A-HD is a make-up water feeder designed for boiler receiver tanks or storage tanks

allowing for complete room-side installation

Complete Service Kit: Includes the flame sensor gasket and mechanical fasteners

This model relies on the primary or secondary circuit protection provided by the boiler's integrated control board or external inline fusing

as a high-capacity 20-ton TXV with ODF connections

Siemens Building Technology 188-0031 Stat 320734-701 the 25A-HD is a make-upThe Siemens 188 0031 (Model TH 188D) is a professional grade unit mount pneumatic thermostat designed for precision control in fan coil units and unit ventilators. As a direct acting (DA) instrument, it employs a liquid filled sensing element and a remote bulb to provide gradual acting control of heating or cooling mediums. Operating on a force balance principle, this thermostat ensures high linearity and rapid response to temperature fluctuations