The Pinnacle® PI-399 gas-fired commercial boiler is equipped with the P125 control board. Supply and return temperatures, flame signal, fan speed (firing rate) and other information can be viewed from an LED digital display module. Switching to the service mode enables contractors to control the firing rate manually. The unit is available for either natural or LP gas. An optional interface module allows for the control of outdoor reset, dual temperature set points, and modulating sequencing of multiple boilers. The direct-vent sealed combustion boiler features a fully modulating burner, 95-percent combustion efficiency, spark ignition, and a safety relief valve. Software that displays boiler status and fault history is available.

Peerless Boilers, Ninth and Rothermel Dr., P.O. Box 447, New Berlinville, PA 19545-0447; 610-845-6130; 610-845-6121 (fax); www.peerlessboilers.com.

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