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Manual 2100-518B
Page 4 of 30
GEOTHERMAL FLOW CENTERS NOMENCLATURE
FLOW CENTER DESCRIPTION
The DORFC Series Flow Centers are a compact, easy to
mount polystyrene cabinet that contains 3-way valves and
pump(s) with connections for ushing, lling and pumping
uids for geothermal closed loop systems. The proven
design is foam insulated to prevent condensation and full
ow service valves minimize pressure drop.
One or two Grundfos pump models UP26-99 are available
based upon ow requirements and loop design.
Unit and loop connections are designed for double o-ring
ttings with several varieties of connections available
(fusion, threaded, barbed and sweat). Pump motor(s) are
230VAC, 60 Hz, 1-phase.
An attractive light gray polystyrene cabinet (that matches
geothermal unit) with black pump(s) provides an
aesthetically pleasing enclosure for pump(s) and valves.
SAFETY
Warnings, cautions and notices appear throughout this
Manual. Read these items carefully before attempting any
installation, service or troubleshooting of the equipment.
DANGER
Indicates an immediate hazardous situation which, if not
avoided, will result in death or serious injury. DANGER
labels on unit access panels must be observed.
WARNING
Indicates a potentially hazardous situation which, if not
avoided, will result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation or an unsafe
practice which, if not avoided, could result in minor or
moderate injury or product or property damage.
NOTICE
Notication of installation, operation or maintenance
information, which is important, but which is not hazard-
related.
DORFC 2
1 = 1-Pump Version, 208/230V, 60 Hz, 1-phase, 22’ HD @ 16 GPM
2 = 2-Pump Version, 208/230V, 60 Hz, 1-phase, 44’ HD @ 16 GPM
Double
O-Ring
Flow
Center
WARNING
Failure to do so could cause property
damage, bodily harm or death.
CAUTION
Failure to do so could cause property
damage, bodily harm or death.