(e)Blower speed rotation must to be monitored to ensure proper control of input modulation. System will lock out gas valve operation if proper blower speed is not detected.
(f)A secondary combustion air safety, in addition to blower speed monitoring, utilizing a mechanical pressure differential switch, must be used with each blower to ensure combustion air is entering the
(g)Modular heat exchanger shall be easily removable through unit sidewall.
(h)Removable cover at front of unit facilitates easy cleaning (when applicable) with complete access to tank and heat exchanger surfaces.
(6)Automatic water level control within a separate float chamber, isolated from the boiling action, to prevent false water level indication.
(a)Fill rate must modulate to match capacity demand to ensure consistent output. Fill cycles based on low water only is not acceptable.
(b)System shall fill through the bottom of the tank to reduce
(c)Unit water level is to be continuously monitored with a dual magnetic electronic float system, located outside of the boiling water to ensure accurate water level control and reduced maintenance. Cool fill water is to be supplied into the sensing chamber to keep the device cool. Systems using conductivity probes or floats located within hot reservoir water are not acceptable.
(d)Tank and float chamber to be separated with a minimum of 1" (25 mm) rigid insulation, minimizing potential scale build up on float mechanisms, due to heating of the contained water.
(e)Humidifier shall have a dual fill valve to feed water to the tank and float chamber, to reduce scaling and mineral build up on the magnetic floats.
(f)Float chamber to include LED indication of five possible water level indications.
(g)Ongoing
(h)Positive
(i)Blow down interval shall be based on actual steam production, and must be adjustable to compensate for all water conditions, to ensure maximum energy and maintenance efficiency.
(j)
(k)Must include end of season
