Cold water generation
Chiller in compact design
for recooling of circulation water, factory assembled,
internally wired, provided with oil and refrigerant,
pressure-tested.
Highly robust design thanks to redundant components.
Cooling unit especially designed for requirements in
the IT field in conjunction with Rittal Liquid Cooling
Package (LCP)
Consisting of:
Solid enclosure made of section plates with louvre
plates on both sides as air inlet and transportation
holes in the base/plinth.
Two compressors with suction cooled gas, fully
hermetically sealed compressors mounted on vibration
dampers with crank case heaters as "tandem (50 %
- 50 %).
Evaporator as plate heat exchanger with stainless
steel plates, copper soldered, diffusion tight
insulation with electrical heating element.
High-performance condensor, air-cooled (copper pipe
with aluminium fins), with two speed-controlled axial
fans, air inlet from both sides, blowing out towards
the top.
One refrigerant circuit of soft copper pipe, silver
soldered, equipped with refrigerant collector, dryer,
inspection glass, security valve, liquid magnetic valve
and thermostatic expansion valve with MOP, service
valves and blocking valves on the suction and pressure
side of the compressors. High-pressure pressostats,
Low-pressure pressostats in TÜV tested design.
Control integrated in a compact enclosure made of
spray-finished sheet steel IP54 in RAL 7035 (Rittal or
comparable design).
Enclosure and control unit accessible from the front
and wired to VDE/IEC standard.
Micro-processor controller Carel PC05 electronic
board with digital display and SNMP interface
card for monitoring and controlling the complete unit.
5 floating contacts for collective fault signal,
pumps, cooling circuit, excess temperature and filling
pressure fallen below,
24 V AC control voltage,
red lamp "collective fault signal",
remote control on/off,
cable marking with marking systems,
cable entry in the front panel,
all motors with motor circuit breaker,
electromagnetic consumer with RC circuit,
main switch, red/yellow,
flow monitor for pump and evaporator protection,
sensor in water inlet and water outlet,
antifreeze probe to protect evaporator,
redundant connection of several units (max. 8) via
master/slave control possible.
Interface to the building control system via Rittal
CMC or SNMP interface possible.
Water circuit as pressure-sealed system with steel
tank.
Two highly efficient inverter pumps with "Viton" seal
in redundant design with switching to even
utilisation,
blocking valve in front of and behind the pumps,
non-return valve at the pump outlet,
automatic bypass valve,
expansion tank, safety valve and exhaust fan,
draining device and filling connection for water
internal,
water connections in the rear panel,
water pressure manometer 0 - 10 bar,
water pressure monitoring via pressure transmitter in
the water entry, piping and components completely
isolated.
Fluid: Rittal Rifrost standard SK3301.960 for indoor
use or outdoor SK3301.950 for outdoor use; as an
alternative water according to the German standard in
water quality with an additive of 20% to maximum 35% of
Antifrogen N from Clariant. In general it is also
possible to use other additives after prior arrangement
with and approval of Rittal. An inappropriate fluid
can lead to damages at the gaskets etc.
Enclosure: Industrial enclosure painted in RAL7035
with rubber anti-vibrating mounts, fixed below
the unit.
We recommend outdoor siting with an additional rain roof
as weather protection, special fencing and anchoring
to the ground (not in our delivery part).
Transportation: to lift the chiller a forklift can be
used or passing strong enough belts below the unit.
Documentation:
General description
Data sheet
Hydraulic scheme, Legend
Wiring plan
Controller description
Parameter list
Spare parts list
German and English language
CE Declaration of Conformity
Test protocol
Directive taken into account:
Machinery Directive 2006/42/EC
Low Voltage Directive 2006/95/EC
EMC Directive 2014/30/EC
Pressure Devices Directive 2014/68/EC
Technical specifications: Cooling output at Tw=15°C,
Tu=35°C 15 kW Cooling output at Tw=25°C, Tu=35°C
16,5 kW Rated operating voltage +/-6% 400V / 50Hz / 3~
Control voltage +/-10%, 24 V AC / 50 Hz Power
consumption at Tw=15°C, Tu=35° 6.9 kW Rated current
max. 23 A Start-up current 59 A Refrigerant R407C
Number of compressors 2 Capacity steps % 0-50-100%
Number of axial fans 2 Pump capacity, 60 l/min Pump
pressure, external 2.5 bar Power consumption pump
0,9 kW Tank capacity, 48 l Temperature range +5°C - +20
Ambient temperatures - Operating conditions -20°C -
+43°C Ambient temperatures - Transport, storage,
-20°C - +60°C Dimensions with base/plinth (W x H x D),
810 x 1542 x 1560 mm Base/plinth height, 100 mm
Water connections (internal thread), 1 1/2" Weight 400 kg
Air throughput of fans 10880 m³/h Sound pressure
level in a 10 m distance 53 dB(A) Protection
(Electric) IP 54 for all electrical components
Material piping Copper, brass and piping
Design: Rittal SK 3232.701 or comparable
Options:
Hydraulic system kit I: 1 inverter pump
Hydraulic system kit II: 2 inverter pump
Hydraulic system kit IV: 2 standard pumps
High efficiency Free-Cooling kit: Free cooling external,
change-over to free cooling at ambient temperature of 2K
below the water inlet temperature;
3-way-valve and controlling are integrated in the chiller,
ambient sensor delivered loose (in the electrical
cabinet) with 5 m cable.
Technical alteration with external free cooling:
Cooling output in compressor operation at Tw=15°C,
Tu=35°C 15 kW, Cooling output free cooler at Tw=15°C,
Tu=10°C 21,5 kW, max. power consumption in free cooling
operation 2,28 kW, max. current in free cooling
operation 4,1 A, air flow direction (to be indicated)
vertical or horizontal
Buffer store of steel, insulated, for separate siting;
volume 500 l, Dimensions D x H = 850 x 1980 mm in
accordance with data sheet;
Supplied loose: Safety assembly and pressure
compensating tank.
Emergency cooling kit via mains water infeed: Plate
heat exchanger with magnetic valve (24V AC) NC and
pressure switch (on a floating contact) for
integration into the return pipe (LCP). Installed in a
separate housing
Municipal water conditions:
max. 8°C, min. 2.0 bar - max. 6 bar,
Special voltage 460V / 60Hz
UPS kit: power infeed divided into two parts - for
compressor and fan, and for control and pump for UPS
connection, switching over by software. (Attention
Must only be used in conjunction with speed-controlled
pumps!)
RiZone efficiency monitoring kit: consisting of
additional sensors to show the energy efficiency
of the chiller, the datas are available by SNMP.