Patterson-Kelley TBIG-03 - Manual (Page 4)

Gemini â Twin-Fuel Gas-Fired Boiler
2.0 D ESCRIPTION
2.1 P RINCIPLE OF O PERATION
Natural gas and propane are permanently piped to
separate connections on the boiler. Each branch of the
gas train is fitted with a regulator and a motorized gas
valve. The regulators are adjusted to properly fire the
boiler from their respective sources. Boiler and con-
trol functions are the same for both fuels.
In the event of interruption or restriction of the natural
gas supply, changeover to propane is made manually
by a selector switch on the boiler (or by a signal from
a remote switch or controller).
When the natural gas supply is reestablished, change-
over is made by restoring the selector switch to its
normal position (or by sending the appropriate signal
from the remote controller).
3.0 S
AFETY
3.1 G ENERAL
The Gemini™ gas-fired boiler must be:
· Installed by qualified personnel in accordance
with designs prepared by qualified facility engi-
neers including: structural, mechanical, electrical,
and other applicable disciplines.
· Operated and serviced in accordance with a com-
prehensive safety program determined and estab-
lished by the customer and complying with all
safety provisions of this manual. Do not attempt
to operate or service the boiler until such a pro-
gram has been established.
· Operated and serviced by qualified, properly
trained personnel in accordance with all applica-
ble laws and regulations.
3.2 T RAINING
It is essential to read, understand, and follow the rec-
ommendations of this manual before installing, operat-
ing, or servicing this equipment. Failure to do so could
result in serious injury, death, and/or property damage.
Proper training is the best protection against accidents.
Operating and service personnel must be thoroughly
familiar with the basic construction of the Gemini™
boiler, the use and locations of the controls, the opera-
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