Rugged Build Quality: Heavy-duty pilot burner housing resists oxidation and thermal stress during extended duty cycles

Reliable Lubrication: Facilitates consistent oil delivery to internal components

Designed for high-performance modulation in mid-sized commercial HVAC systems

The 2228741 assembly is compatible with a wide range of Daikin-McQuay air handlers

OEM HVAC Part

Siemens Building Technology 188-0033 Thermostat 321894-708 Rugged Build Quality: Heavy-duty pilotThe Siemens Building Technology 188 0033 is a specialized unit mounted hot water replacement thermostat engineered for high demand commercial heating applications. Designed specifically for hydronic HVAC heating control, this analog controller provides precise temperature regulation for terminal units including fan coils and unit heaters. As a critical HVAC replacement part, it enables contractors to restore legacy system performance without the