This component is a direct replacement for QMark ARWH series (specifically ARWH1802

and 277V circuits without internal reconfiguration

The MARS 19005 Potential Relay is a heavy-duty 395V 66 potential relay engineered for precise single-phase motor starting in high-demand refrigeration and air conditioning systems

Common Questions & Technical Support Which steam trap models is the A9739 compatible with

Ensure all set screws are torqued to manufacturer specifications to maintain localized concentricity during high-RPM operation

Lennox 54M89 Control Kit 30067439-890 This component is a directThe Lennox 54M89 Low Ambient Control Kit (LB 101123B) is a critical field installed accessory designed to maintain head pressure in PSC fan heat pump units during cooling cycles in low temperature environments. This kit enables reliable system operation down to 30F ( 1C) by cycling the outdoor fan via the S11 pressure switch. By regulating fan operation, the kit preserves the necessary pressure differential across the expansion device, preventing