Does this unit require a separate transformer

reducing unnecessary service calls for nuisance trips after a temporary thermal event

this kit is specifically designed to fit the common 9-hole header configuration found on Raypak 206A through 406A and 207A through 407A digital heaters

The operating span is field-adjusted by changing the spring

the 661057R is specifically sized (#57) for Liquid Propane (LP) applications

Schneider Electric (Barber Colman) 22-138 Gauge Adaptor Does this unit require aThe Schneider Electric 22 138 Gauge Adaptor is a critical fitting designed for precise pneumatic system diagnostics and calibration. This Barber Colman gauge adapter features 1 8" 27 FPT threads, allowing for the seamless integration of standard pressure gauges into existing control loops. Specifically engineered to interface with the 22 137 check valve and 22 143 check valve tee, this adapter ensures a leak free connection for accurate pressure