Key To System Schematics - Eclipse ThermJet TJ0015 Design Manual

K s s
ey to ystem
S A
YMBOL PPEARANCE
Main gas
shut-off
valve train
P
NC

ChematiCs
N
AME
ThermJet burner
Main gas shutoff valve train
Combustion air blower
Air pressure switch
Gas cock
Solenoid valves are used to
(normally closed)
Manual butter y valve
Automatic butter y valve
Eclipse ThermJet Design Guide No. 205, 3/5/07
R
EMARKS
Eclipse, Inc. strongly endorses
NFPA as a minimum.
The combustion air blower
provides the combustion air
pressure to the burner (s).
The air pressure switch gives
a signal to the safety system
when there is not enough air
pressure from the blower.
Gas cocks are used to manually
shut off the gas supply on both
sides of the main gas shut-off
valve train.
Solenoid valve
automatically shut off the gas
supply on a bypass gas system or
on small capacity burner systems.
Manual butter y valves are used
to balance the air or gas ow at
each burner, and/or to control the
zone ow.
Automatic butter y valves are
typically used to set the output of
the system.
B /
ULLETIN
I
NFO GUIDE
756
610
610
710
760
720
720