Beckett CG10 Manual page 11

by natural gas appliances. It is safe and effective for
propane usage in this design application.
Optional – Gas trains for IRI and FM are available and
must be specifi ed when ordering a burner.
Verify – Verify that the train components are not
damaged and all piping and fi ttings are clean inside and
out. The gas train is normally shipped as components
and must be assembled and installed at the site.
Figure 8. UL gas train confi guration
MSC
U
C6097A
LGPS
MSC U
ABBREV.
HGPS
LGPS
MSC
MLTC
PRSSOV
SSOV1
TC
TP
U
CG10 Burner Manual
LGPS
TC
SSOV1
TC
SSOV1
ITEM DESCRIPTION
HIGH GAS PRESSURE SWITCH
LOW GAS PRESSURE SWITCH
MAIN SHUTOFF COCK
MAIN LEAK TEST COCK
PRESSURE REGULATING
SAFETY SHUTOFF VALVE
SAFETY SHUTOFF VALVE #1
TEST COCK
TEST PORT
UNION
Vent lines – Install vent lines to any gas valve component
that requires atmospheric air pressure to balance a
diaphragm. Vent lines must be run to the outdoors, with
the termination point away from fresh air intakes and
windows. The terminal opening must be fi tted with a wire
mesh screen to block insects and other contaminants
from entering the vent and must be mounted in such a
position that water, ice, dirt, or any other foreign matter
cannot infi ltrate and block the vent piping. Make sure the
fi nal assembly is anchored securely.
TC
PRSSOV MLTC
TC
PRSSOV MLTC
shutoff valves are used, the distance
from the fi nal shutoff valve (PRSSOV
in Fig. 8) to the burner manifold must
be kept to a minimum for good light-off
reliability. R.W. Beckett recommends the
following maximum lengths:
Pipe Size Max. Length
1" 12"
1-1/4" 15"
1-1/2" 18"
2" 24"
If a Normally Open Vent Valve (not
shown) is used, the distance between
the SSOVs must be kept to a minimum
using the shortest practical nipples.
Section: Connect Gas Piping
HGPS
U TP
C6097B
HGPS
TP
BURNER
U
When pressure
reducing safety
11