77
Getting started
Establishing Connection sizes, lengths & Bends
tYpICal sInGlE pRotECtED EnClosURE ConnECtIons
pRotECtED
EnClosURE
C
B
EnClosURE pRotECtIon VEnt
(Optional)
E
sUpplY
REFEREnCE
1/2"
pRotECtIVE
Gas sUpplY
HEaDER
EnClosURE
pRotECtIon
sYstEM
Maximum tubing / pipe length and
Maximum number of Bends / Elbows
1/4" O.D. Tubing
Fully Reamed
Fully Reamed
20 Feet
10 Bends
1/4" O.D. Tubing
Fully Reamed
Description
tubing or pipe Diameter
Enclosure
supply
system
supply tubing
Enclosure
Reference
1/4" O.D. Tubing
Fully Reamed
5 Feet
5 Bends
20 Feet
10 Bends
Multi - Enclosure
Connections
1/2" I.D. Pipe
Fully Reamed
10 Feet
5 Elbows
optional Remote
Venting
1/2" I.D. Pipe
Fully Reamed
30 Feet
5 Elbows
a
B
E
D
C
InlEt
EnClosURE
pRotECtIon
sYstEM
pRotECtED
EnClosURE
pRotECtED
EnClosURE
D
sUpplY
REFEREnCE
InlEt
Connections for Heavier than
Air Gases and Vapors
oUtlEt
oUtlEt
B
tYpICal MUltIplE pRotECtED EnClosURE ConnECtIons
1/2"
pRotECtIVE
Gas sUpplY
HEaDER
a
a
D
C
Connections for Lighter than
Air Gases and Vapors
HElpFUl HInts
If flammable gases are lighter than air, the inlet con-
nection to each enclosure must enter near a bot-
tom corner. the outlet connection, for an optional
enclosure protection vent or piping to an adjacent
protected enclosure, must exit near an extreme op-
posite 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.
Determining Enclosure Inlet & outlet Connection locations
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.
pRotECtED
EnClosURE
RSPSupply - 1-888-532-2706 - www.RSPSupply.com
http://www.RSPSupply.com/p-6798-Hoffman-A1001YZUMC2-Purging-Pressurization-System-10-CF.aspx