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<strong>BTH</strong> <strong>ULTRA</strong> Electric Boilers<br />
The <strong>BTH</strong> <strong>ULTRA</strong> electric boiler series produces all the energy required<br />
for hydronic systems in residential, commercial and institutional<br />
applications.<br />
To achieve maximal energy exchange, an injection system propels<br />
boiler water around electric elements in the boiler.<br />
OUR<br />
PRODUCT<br />
ARE CERTIFIED<br />
The new Thermo 2000 electronic board uses outdoor<br />
reset to control boiler water temperature based on<br />
the outdoor air temperature and reset ratio. The<br />
new control improves comfort and energy savings<br />
on mild days.<br />
When the outdoor air temperature rises above the<br />
Warm Weather Shut Down setting, the control does<br />
not operate the boiler to satisfy a heating demand.<br />
Safety relief valve<br />
regulation relays<br />
Boiler water supply<br />
High-limit temperature<br />
Temperature and<br />
pressure gauge<br />
Wiring terminal<br />
• Thermostat<br />
• Dual Energy<br />
• Pump<br />
• Outdoor sensor<br />
24V Transformer<br />
Protection fuse<br />
Electric<br />
heating<br />
elements<br />
Drain valve<br />
High voltage<br />
terminal block<br />
Boiler water<br />
return<br />
Main circuit<br />
contactor<br />
Electronic control<br />
connection<br />
Dual-Energy controller<br />
(Ordered as an option)<br />
• CBE-EM:<br />
Electric / Oil<br />
• CBE-EB:<br />
Electric / Wool
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