Pepperl+Fuchs 1011 Series Installation And Operation Manual page 6

Model 1011 Installation and Operation Manual
1/2"
PROTECTIVE
GAS SUPPLY
HEADER
Description
*Tubing or pipe diameter
Maximum tubing / pipe pength and
maximum number of bends / elbows
1/2"
PROTECTIVE
GAS SUPPLY
HEADER
A
HELPFUL HINTS
To ensure adequate protective gas flow to the protected enclosure(s), all piping and tubing must be fully reamed.
Precautions must be taken to prevent crimping and other damage to protective gas piping and tubing.
When protecting multiple enclosures with a single enclosure protection system, the enclosures must be
connected in series from the smallest to the largest to ensure adequate protective gas flow.
Determining Enclosure Inlet & Outlet Connection Locations
INLET
Connections for heavier than
air gases and vapors
6
Getting Started
Typical Single Protected Enclosure Connections
C
REFERENCE
ENCLOSURE
PROTECTION
SYSTEM
SUPPLY
A
B
A
System
supply tubing
1/4" O.D. tubing
fully reamed
20 feet
10 bends
TYPICAL MULTIPLE PROTECTED ENCLOSURE CONNECTIONS
B
SUPPLY
ENCLOSURE
PROTECTION
SYSTEM
REFERENCE
*NOTE: Tube and pipe sizes are not equal in inside diameters.
DO NOT substitute tube for pipe with same trade size.
OUTLET
OUTLET
INLET
Connections for lighter than
air gases and vapors
ENCLOSURE PROTECTION VENT
(Optional)
PROTECTED
ENCLOSURE
B C
Enclosure Enclosure
reference
supply
1/4" O.D. tubing 1/4" O.D. tubing
fully reamed fully reamed
5 feet 20 feet
5 bends 10 bends
D
PROTECTED
PROTECTED
ENCLOSURE
ENCLOSURE
C
HELPFUL HINTS
If flammable gases are lighter than air, the inlet connection
to each enclosure must enter near a bottom corner. The
outlet connection, for an optional enclosure protection
vent or piping to an adjacent protected enclosure, must
exit near an extreme opposite top corner.
If flammable gases are heavier than air, inlet and outlet
connections must be reversed.
In all cases, the most prevalent gas must determine the
location of inlet and outlet connections.
E
D
E
Optional remote
Multi - enclosure
connections venting
1/2" I.D. pipe 1/2" I.D. pipe
fully reamed fully reamed
10 feet 30 feet
5 elbows 5 elbows
D
PROTECTED
ENCLOSURE