5mm x 15mm cartridge footprint of original factory installations

The Belimo ZG-R01 Resistor is a critical field accessory designed to provide seamless signal conversion for HVAC control systems

including the 27W model

it is rated for both natural and LP gas systems

High-Temperature Durability: Silicon carbide construction handles repetitive thermal stress in high-efficiency gas furnace ignition cycles

York S1-025-49713-000 Transformer 5mm x 15mm cartridge footprintThe York S1 025 49713 000 is an OEM heavy duty 75VA 24V control transformer engineered for multi tap primary applications in professional HVACR systems. This component effectively steps down 208 240v to 24v, providing stable low voltage power for contactors, control boards, and thermostats in York, Luxaire, and Coleman equipment. As the direct replacement for S1 025 25973 700, it maintains the precise electrical characteristics and mounting footprint