Hot Surface Ignition (HSI)

multiple honeywell home remote sensors can be wired in series-parallel configurations to provide temperature averaging

This industry-standard Apollo RVW30F series valve is the preferred choice for contractors requiring a high-flow

OEM Compatibility: Direct replacement for various Weil-McLain Ultra and GV series boilers

the 012843F filter is specifically sized and rated for the Raypak 101-401 series

Daikin-McQuay 047356103 Pressure Switch Els PW 17895 Hot Surface Ignition (HSI)The Daikin McQuay 047356103 Pressure Switch is a high precision HVAC low pressure cutoff designed for critical system monitoring in McQuay and Daikin commercial units. This 60 35# pressure switch operates with a 60 PSI cut in and a 35 PSI cut out, providing essential refrigerant loss protection for the compressor. Engineered for durability, this 047356103 pressure control replaces several legacy models, including the 473561B 03 and Invensys MG20 1222,