These are unused in crate. The Pennco 1609HSID is a natural gas-fired steam boiler from the Pennco 16 Series, designed for indoor residential applications. It features a cast iron heat exchanger and operates with an intermittent electronic ignition system Manufacturer info states: Standard Features
6" steam chest for ample steam generation
(2) 2½" supply and return tappings
Integral draft diverter for safe operation
Low water cut-off with electronic probe
Pressure limit control and 15 psi ASME pop safety valve
Flame roll-out safety shut-off fuse link
Blocked vent safety shut-off manual reset disc thermostat
Glass water level gauge and steam pressure gauge
24V transformer and electronic ignition system
Please call with any questions.