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Manual 2100-518B
Page 10 of 30
The Flow Center features Double O-Ring ttings for
installation exibility and ease of installation – maintaining
a reliable connection. Table 1 illustrates the connection
options available for Flow Centers. Pressure drop in
piping systems should be calculated to ensure adequate
ow through the unit. All piping should be properly
insulated with closed cell insulation of 1/2" wall thickness.
Piping insulation should be glued and sealed to prevent
condensation using closed cell insulation glue. The swivel
connectors on the ow center and at the unit are designed
to be hand-tightened only.
NOTE: Apply petroleum jelly to O-Rings to prevent
damage and aid in insertion.
Loop side piping is typically polyethylene piping directly into
the ow center. Connection to the ow center can be made
with either a fusion or barbed tting as shown in Table 1.
Connection between the ow center and the geothermal
heat pump typically would be made using the hose kit
(DORLFCK-1), which contains all ttings necessary for
connection between the heat pump and the ow center as
shown in Figure 5. Other variety of materials may also be
used for this connection - such as PE or copper piping.
1-1/4" Socket Fusion X
Double O-ring
DORF125-S
1" Hose Barb X
Double O-ring
DORB1-S-4HC
1" MPT X Double O-ring
DORMP1-S
Description Part Number
1-1/4" PE Fusion X Double O-Ring DORF125-S
Double O-Ring Loop Flow Center Kit DORLFCK-1
1" Barb X Double O-Ring (includes {4} hose clamps) DORB1-S-4HC
1" MPT X Double O-Ring DORMP1-S
1" FPT X Double O-Ring DORFP1-S
1" Copper Sweat X Double O-Ring (includes {2} P/T ttings) DORS1-S
1" Hose Barb X Double O-Ring 90° Elbow (includes {4} hose clamps and {2} P/T ttings) DORB1-90-4HC
1" MPT X Double O-Ring, 90° Elbow (includes {2} P/T ttings) DORMP1-90
Quick Connect Cam Lock X Double O-Ring 90° Elbow DORCL1-90
Male Garden Hose Thread X Double O-Ring (1-piece per box) DORGHMT
PIPING INSTALLATION
TABLE 1
NOTE: All
ttings boxed in pairs (2-pieces each) will exception of DORGHMT.