Introduction
The H20-220series liquid cooling
kits are designed for quiet operations in extreme thermal
load environments such as multiprocessors, thermoelectric
applications, or extreme overclocking. These kits are
ideally suited for wide body server chassis featuring
120mm fan ventilation. A chassis modification is required
in most cases to locate the dual 120mm radiator. Other
components are entirely plug-and-play. The kits' reliability
factor is now enhanced compared to earlier 22600 series
models thanks to the replacement of the MCP600 pump
by the new MCP650, which
features a 5 year lifetime.
Performance features:
- Extreme performance MCW6000
series waterblocks
- Extreme performance MCP650
12 Volts DC industrial pump
- 1/2" OD tubing for optimum flow
rate, and reasonable bulk
- Slim profile radiator assembly with
dual 120mm fan, each rated at 72 CFM (34dBA) each. Radiator
may be installed outside the case.
- 5 Watt 25 Ohm Rheostat, allowing to
adjust the fans voltage to fine tune airflow and noise
levels.
Convenience features:
- 12 Volt DC pump plugs directly into
computer power supply.
- High-reliability, no-maintenance
industrial pump features quiet operations thanks
to brushless motor, and is rated at 50,000 hour MTBF(Mean
Time Between Failures) equivalent to 5 year lifetime.
- FBK525
fill & bleed assembly fits entirely into a single
5 1/4" bay : no reservoir is needed, resulting
in space saving, and uncluttered installation.
- Quick-connect fittings, for safe and
expeditious installation
- Plug-and-play waterblock installation,
doesn't require removing the motherboard.
Optional devices and configurations:
- Add a VGA cooler such as the MCW50
- Add a chipset cooler such as the
MCW20
- Add a second water block for multiprocessor
applications, such as dual AMD®, dual Xeon,
or dual Opteron (soon to be released).
Kit configurations & Models: See
page 2
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Performance Data
Water-cooling Kit
performance testing was conducted in an environmental
chamber where the radiator fan inlet air temperature was
held at 25.00°C ±0.05. As a heat source, in
place of a CPU, a heat die simulator was installed in
a bare chassis with the actual kit pieces.
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Kit Model
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Radiator/Fan configuration
(*)
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System °C/W
(***)
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Fan Noise, dBA
(per specs, and est.****)
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H20-220
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1 radiator
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115 Watts
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0.204
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~37
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* Testing performed with
the fan(s) shipped with the kit, Delta WFB1212M
** actual Watts measured at the heater of die simulator
*** Noting that "C/W"s are specific to an individual
test bench (due to the lack of standard test methods);
the system C/Ws described are those actually determined
with a specific water-cooling kit under the conditions
described above.
**** Fan noise estimate based on: "If the speed of
a fan is reduced by 20%, the decibel level will reduce
by 5 dB.", and "addition of a second equal source
increases the sound level by ~3dBA".
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INDIVIDUAL COMPONENT
SPECIFICATIONS
- MCW6000 waterblock: see complete
specifications here
- MCP650 12 Volts DC pump: see
complete specifications here
- MCW50 VGA waterblock: see complete
specifications here
- MCW20 Chipset cooler see complete
specifications here
-
Ultra-slim, black anodized aluminum plate
and fin construction

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Part #
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Thickness
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Height
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Length
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Core width
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Fitting Size
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RAD676
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3/4"
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11"
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5 7/8"
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4"
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3/8" OD tubing with 1/2"
quick connect elbow adapters
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In most situations, the radiator will
be installed outside of the case, either on a side, top,
or back panel, with the two 120mm fans installed inside
of the case. A custom gasket is provided with the assembly
to optimize the seal between heat-exchanger, panel, and
fans. The inlet and outlet tube diameter are 3/8",
and factory equipped with 1/2" quick-connect elbow
fittings. Rubber grommets are provided for routing
the tubing inside the case.

Click on picture to enlarge
Fan specifications
Manufacturer: Delta
Bearing type: ball bearings
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Part #
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Voltage
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Current
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Power
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Speed
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Air flow
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Noise
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VDC
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Amp
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Watt
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RPM
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CFM
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dBA
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WFB1212M
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12
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0.20
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2.40
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2100
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72.4
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34.0
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Rheostat specifications
10 Ohm, 5 Watt, wirewound
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This 1/2" fill & bleed kit replaces
a reservoir. It fits in any 5 1/4" bay, and occupies
only one slot. Thanks to convenient retention clips, the
FBK525 revision 2 can also be installed just about anywhere
in the computer. New inlet and discharge ball valves also
offer added convenience for quick and easy insertion and
removal of the tubes.
The FBK525 allows users to fill the circuit
with coolant, and conveniently bleed it of any air bubbles.
The kit ships with two 2 1/2ft long, 1/2" tubes for
fill and bleed operations.

Inherent advantages of this kit compared
to previous versions are:
- Height: fits entirely into (1) one
5 1/4" bay
- Retention clips allow alternative placement
of the kit anywhere in the chassis
- Direct access to the inlet and discharge
valves from the front of the chassis
- New inlet and discharge quick-connect
ball valves feature easy tube insertion and removal.
- Safe to ship with the system filled-up
with coolant.
Advantages of such kit versus 5 1/4"
reservoirs are also multiple:
- Safety: Ability to leak-proof
the system with no liquid in it, by placing
the circuit under vacuum (simple suction per installation
guide page 4). This allows users to install the
cooling kit in a system already populated with all its
components safely.
- Efficiency: Most 5 1/4"
reservoirs are too shallow to prevent air entrainment
by the cooling fluid with high capacity pumps. It means
that the level of the reservoir coolant above the pump
inlet is not high enough to prevent the inlet suction
from pulling in air. The high turbulence generated at
the reservoir inlet can also create bubbles (admix air)
into the coolant which transfer back into the pump inlet.
Noisy operation, damage to the pump, and degraded cooling
performance are high probabilities.
- Safety: the FBK525 kit
allows system builders to ship pre-filled systems with
no worries for leaks.
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