the 21V51U-843 furnace kit includes a 120V nitride ignitor intended to replace the original 80V ignitor in those specific applications

or building management system (BMS) that accepts a standard 12-30Vdc loop-powered 4-20mA analog input

Precision Calibration: Features an adjustable setpoint with a tight 8

Standardized Wiring: Features clear terminal markings for efficient field replacement and reduced downtime

The inclusion of break-off shafts allows for rapid adaptation to various knob depths

Trane VAL8801 TXV 318172-701 the 21V51U-843 furnace kit includesThe Trane VAL8801 is a high performance 5 ton thermostatic expansion valve engineered for precise refrigerant metering in R410A residential and commercial air handlers. This OEM expansion valve, also identified by part number D154636P07, features 3 8 x 1 2 ODS connections and is designed to maintain optimal superheat across varying load conditions. It serves as a direct replacement for Trane TXV kit components, ensuring the evaporator coil operates at