CIAT HYDROCIAT 1800BX User manual

Instruction manual
01 - 2015
NA 01.29 I
version B
HYDROCIAT LW - LWP

EN - 1
EN
CONTENTS PAGE
1 - INTRODUCTION 2
2 - SHIPMENT OF THE UNIT 2
3 - RECEIPT OF GOODS 2
3.1 Check equipment on delivery 2
3.2 Identifying the equipment 2
4 - SAFETY INSTRUCTIONS 2
5 - MACHINE COMPLIANCE 2
6 - WARRANTY 2
7 - UNIT LOCATION 2
8 - HANDLING AND POSITIONING 3
8.1 Detailed view of the anchorage point
for handling 4
8.2 Type of shackle recommended for handling
the unit 4
9 - INSTALLING THE UNIT 4
9.1 Dimensions and weight 4
9.2 Anti-vibration mounts (Supplied as an option) 4
10 - OPERATING LIMIT 5
10.1 Operating ranges 5
10.2 Condenser limits 5
10.3 Evaporator limits 5
10.4 Minimum/maximum water ow rates 5
11 - LOCATION OF THE MAIN COMPONENTS 5
12 - MAIN COMPONENTS OF THE
REFRIGERATING CIRCUIT 6
13 - HYDRAULIC CONNECTIONS 6
13.1 Diameters of the hydraulic and refrigeration
connections 7
13.2 FLANGE/VICTAULIC adapter kit (optional) 8
14 - INSTALLATION ANTIFREEZE
PROTECTION 8
15 - ELECTRICAL CONNECTIONS 9
15.1 Power connection 9
15.2 Customer connection for remote control
functions. 10
16 - CONTROL AND SAFETY DEVICES 11
16.1 Electronic control and display module 11
16.2 Main functions 11
16.3 Safety device management 11
16.4 Electronic expansion valve 12
16.5 Oil safety 12
16.6 Setting the compressor capacity 12
16.7 Location of the safety sensors and devices 12
16.8 Adjusting the control and safety devices 14
17 - COMMISSIONING 14
17.1 Commissioning 15
17.2 Essential points that must be checked 15
18 - TECHNICAL DATA 16
18.1 General specications 16
18.2 Electrical specications 18
19 - DESUPERHEATER PARTIAL RECOVERY 19
19.1 Main refrigerating circuit diagram 19
19.2 Hydraulic connections: conguration and
precautions 19
20 - SERVICING AND MAINTENANCE 19
20.1 Unit maintenance and servicing 19
20.1.1 Safety instructions 19
20.1.2 Noise 19
20.1.3 Oil 19
20.1.4 Refrigerants - general information 20
20.1.5 Halocarbon and hydrouorocarbon
refrigerants 20
20.1.6 Servicing 20
20.1.7 Disassembling the compressor 20
20.2 HYDROCIAT operating readings 21
21 - TROUBLESHOOTING OPERATING
PROBLEMS 21
22 - ECODESIGN 23
23 - HYDROCIAT INSTALLATION SCHEMATIC 23
23.1 Cold mode (Heating and cooling) 23
23.2 Hot mode (Heating and cooling) 24
23.3 Cold mode with drycooler 24

EN - 2
1 - INTRODUCTION
HYDROCIAT water-cooled condensation chilled water
production units, with LW series screw compressors, and
LWP series heat pump, provide the perfect solution to the
problems encountered in the fields of air conditioning or the
industrial process.
These units comply with standards EN 60-204 and EN 378-2,
as well as the following directives:
- Machinery 2006/42 CE
- EMC 2004/108 EC
- LVD 2006/95 EC
- PED 97/23 EC
-> Category 3 models LW - LWP 1800BX (HPS) to 2800BX (HPS)
-> Category 4 models LW - LWP 3050BX (HPS) to 4800BX (HPS)
Test pressure (TP): Test not executed given the
harmfulness of a hydrostatic pressure test. CIAT has set up
compensatory measures (tests on a model representative
of all 3 x PS assemblies) in compliance with § 5.3.2.2 a and
6.3.3 iii of standard 378-2.
Shipment temperature:
LW 1800 to 2800 → Min. -30°C - Max. 50°C.
LW 3050 to 4800 → Min. -30°C - Max. 60°C.
Storage temperature:
LW 1800 to 2800 → Min. -30°C - Max. 50°C.
LW 3050 to 4800 → Min. -30°C - Max. 60°C.
Operating temperature:
Refer to the section on "operating limits" in these instructions.
2 - SHIPMENT OF THE UNIT
- During shipment, the load must be securely strapped in place
to prevent any movement, and to protect the unit from damage.
- Models LW 1800BX (HPS) to 4800BX HPS must be shipped
on a curtain-sided lorry
- Container shipment:
The container must be selected to prevent any loading or
unloading problems.
The units will be mounted on a wooden frame, and covered
with a plastic film. The whole bundle will be inside a wooden
crate. Loading and unloading by forklift truck.
Do not lift the unit by its accessories.
3 - RECEIPT OF GOODS
3.1 Check equipment on delivery
- Check the condition of the unit and the compliance of the
delivery upon its arrival on-site.
Complete the associated documents, and return them to CIAT.
Note any damaged or missing parts on the delivery slip.
IMPORTANT: you must notify the carrier of any damage
and/or missing parts by registered letter within three days of
delivery.
- Systematically leak test all the refrigeration connectors.
- Similarly, be sure not to store the unit in an outdoor location
exposed to adverse weather and frost.
3.2 Identifying the equipment
Every unit has a
manufacturer's plate
(A) displaying an
identification number
Check the plate on the unit to ensure that it is the correct
model.
Please include the identification number
in all correspondence with CIAT.
4 - SAFETY INSTRUCTIONS
To prevent accidents while installing, activating and adjusting
the unit, the following equipment specifics must be taken into
account:
- Pressurised refrigeration circuits.
- Presence of refrigerant.
- Presence of electrical voltage.
- Location.
Only experienced and qualified persons may work on this
equipment.
The recommendations and instructions in this manual and on
each drawing provided with the unit must be followed.
In the case of units with pressure equipment or components,
we recommend that you contact your professional organisation
for information on the regulations that apply to operators
or owners of pressure equipment or components. The
specifications of this equipment or components are given on
the manufacturer's plate or in the regulatory documentation
provided with the product.
A fire protection device is fitted as standard on the units. This
device can only be removed under the responsibility of the
operator, and if the risk of fire is fully under control.
Always comply with applicable standards and regulations.
IMPORTANT: Make sure the main disconnect switch in the
unit's electrical panel is in the OFF position before working on
the unit.
5 - MACHINE
COMPLIANCE
6 - WARRANTY
The warranty is effective
for a period of 12 months
from the date the unit is
activated, provided said
date occurs within three
months of the invoice date.
It is effective for a period
of 15 months from the unit
invoice date in all other
cases.
NOTE: Refer to our general
terms and conditions of
sale for further information.
7 - UNIT
LOCATION
Before setting up the unit in its intended location and connecting
it, the installer must check the following points:
- These units are designed to be installed and stored
inside a machine room that is sheltered from the frost
and the elements. Failure to do so will incur the loss of
the manufacturer's warranty.
- The room housing the unit must comply with the requirements
of regulation EN 378-3 and other specifications applicable at
the installation site.
Min. room ventilation flow rate
Q min. = 15 x s x (mc/φ) with at least 2 m3/h, where
s: Safety coefficient = 4
φ: Density of refrigerant (R134a) at atmospheric pressure and
25°C = 4.258 kg/m3.
mc: Mass of refrigerant (kg)
please refer to section 18, Electrical specifications:
Q min. = mc
14.09
A

EN - 3
EN
HYDROCIAT
LW - LWP
1800BX
1800BX HPS
2150BX
2150BX HPS
2500BX
2500BX HPS
2800BX
2800BX HPS 3050BX HPS 3500BX HPS 3600BX HPS 3900BX HPS 4200BX HPS 4500BX HPS 4800BX HPS
G1 715 720 725 725 878 867 898 876 881 880 880
G2 1200 1140 1210 1210 1390 1374 1439 1450 1449 1432 1447
G3 1000 1060 1110 1110 812 826 822 839 844 833 835
Ø45 50
G3
G1
G2
30°
max.
Centre of gravity
This diagram is provided as a guide;
always refer to the pictograms on the unit
For the unladen weight, please refer to section 9.1. Dimensions
- The surface area of the ground or bearing structure must be
strong enough to bear the unit's weight.
- The unit must be perfectly level.
- There must be sufficient free space around and above the unit
to allow servicing and maintenance operations (see 9.1 and
dimensional drawing provided with unit).
These units are typically used for refrigeration and are not
required to withstand earthquakes. Earthquake resistance has
therefore not been checked
- The selected location must not be liable to flooding.
- Allow for drainage of defrosting water.
- Our units are designed with the aim of minimising the sound
level. However, the installation design should prevent airborne
and solid-borne noise transmission (vibrations).
- Sound level:
• Our units are designed to operate quietly.
• In the installation design, you must take into account the
interior environment for radiated noise and the building type
for airborne and solid-borne noise transmission.
• To limit solid-borne transmission as much as possible, fitting
anti-vibration mounts between the unit support and frame
(see the Installation section) is strongly recommended, as
is fitting flexible sleeves on the hydraulic piping.
• Have an analysis carried out by an acoustics engineer.
8 - HANDLING AND POSITIONING
These machines must be unloaded and positioned by a specialist
handling company using the appropriate, standardised tools.
To raise the unit, attach the slings to the specially fitted
handling holes (see fig. below).
The data relating to the centre of gravity and the position of the
anchorage points are given on the dimensional drawing.
The unit can be handled with a forklift truck (check the
maximum permissible load of the forklift).
In this case, it is important that the necessary precautions are
taken to avoid the unit sliding on the forks of the forklift. You
must observe the instructions given on the label affixed to the
unit. Failure to observe these instructions may result in the unit
tipping over and causing physical injury.
WARNING:
- Attach the slings only to the anchorage points intended for
this purpose and which are designated on the unit.
- Use slings with a suitable lifting capacity and follow the lifting
instructions on the drawings provided with the unit.
- Caution: the centre of gravity is not necessarily at the middle
of the unit and the forces applied to the slings are not always
identical.
- Raise and set down the unit carefully. Take care not to tilt it
by more than 15°, as this could adversely affect its operation.
- To avoid damaging the casing, use textile slings with
shackles.
- Use a frame with an adjustable centre of gravity to keep the
slings away from the top of the unit.
- Always protect the unit casing (panels, posts, front access
door) from damage during handling. Only the base frame is
designed to withstand handling.
- Safety when lifting can only be guaranteed if all these
instructions are followed.
Otherwise, there is a risk of damage to the equipment and
personal injury.

EN - 4
9 - INSTALLING THE UNIT
9.1 Dimensions and weight
Dimensions and clearance required for servicing the unit (see dimensional drawing supplied with the unit)
.
1 m1 m
X (m)
X (m)
min.min.
Clearance X required on just one side, opposite 1 m
9.2 Anti-vibration mounts (Supplied as an option)
Anti-vibration mounts must be installed beneath the unit in the case of applications with extremely low vibrations.
The mounts must be placed at the locations illustrated below.
HYDROCIAT
LW - LWP
1800BX 1800BX
HPS 2150BX 2150BX
HPS 2500BX 2500BX
HPS 2800BX 2800BX
HPS
3050BX
HPS
3500BX
HPS
3600BX
HPS
3900BX
HPS
4200BX
HPS
4500BX
HPS
4800BX
HPS
X (metres) 3 3.5 4
Weight
(empty) Kg 3130 3150 3520 3540 3830 3850 3840 3860 4691 4759 5106 5274 5293 5342 5362
Weight in
operation Kg 3360 3380 3800 3820 4110 4130 4120 4140 5064 5275 5502 5812 5820 5905 5925
HYDROCIAT
LW - LWP
1800BX
(HPS)
2150BX
(HPS)
2500BX
(HPS)
2800BX
(HPS)
3050BX
HPS
3500BX
HPS
3600BX
HPS
3900BX
HPS
4200BX
HPS
4500BX
HPS
4800BX
HPS
A520 520 520 520 155 125 195 155 165 165 165
B- - - - 283 313 243 283 273 273 273
8.1 Detailed view of the anchorage point for
handling
Ø see table, chapter 8
Handling and positioning
8.2 Type of shackle recommended for
handling the unit
We recommend using shackles to
handle the unit.
STAS shackle
- Forged steel bow shackle with pin
- STAS code: 130M
- Working load limit: 4000 kg
30
60
30
120
130
90
SYLOMER P 350 x 50 x 25
350
350AB
350
50
SYLOMER P 400 x 70 x 25
400
A
400
70
LW - LWP
1800BX - 2150BX - 2500BX - 2800BX - 1800BX (HPS) -
2150BX (HPS) - 2500BX (HPS) - 2800BX (HPS)
LW - LWP
3050BX (HPS) - 3500BX (HPS) - 3600BX (HPS) - 3900BX (HPS)
4200BX (HPS) - 4500BX (HPS) - 4800BX (HPS)

EN - 5
EN
10.1
Operating
ranges
A- Full load operation
with pure water
B- Full load operation
must be with glycol
C- Operation without
HPS
D- Partial load
operation (AUTO-
ADAPTIVE)
10.2 Condenser limits
IMPORTANT: To ensure that LW - LWP units operate correctly,
especially during the start-up phases, with a condenser cold
water loop, a device must be fitted to ensure a minimum
condenser fluid inlet temperature of 20°C is reached very
quickly (e.g. 3-way valve).
10.3 Evaporator limits
The curve shows the minimum and maximum allowable
temperature differences for pure water or glycol water according
to the evaporator fluid outlet temperature. Also check the
minimum and maximum temperature differences according
to the requisite minimum and maximum flow rates (see table,
section 10.4 Minimum/maximum water flow rates).
1
-8 -6 -4 -2 0246810
12
6
5
2
3
4
7
8
9
Tubular evaporator
Water outlet temperature (°C)
ΔT maximum
ΔT minimum
ΔT acceptable evaporator water
inlet/outlet difference (°C)
difference taken into account in the performance tables.
Example:
For water outlet: + 5°C (design Δt 5°C)
Minimum ΔT: 3.1°C Water temp.: 8.1 / 5°C
Maximum ΔT: 7.2°C Water temp.: 12.2 / 5°C
- An excessively low flow rate can be a fouling factor; an excessively high flow rate can cause erosion phenomena.
11 - LOCATION OF THE MAIN COMPONENTS
LW - LWP 1800BX to 2800BX LW - LWP 3050BX to 4800BX
HYDROCIAT LW LWP
ΔT minimum°C 5
ΔT maximum°C 10
Evaporator
Electrical cabinet Manifold (Optional)
Manifold (Optional)
Desuperheater (Optional)
Condensers
Compressor N° 2Compressor N° 1
Compressor N° 2
Compressor N° 1
Electrical cabinet Manifold (Optional)Manifold (Optional) Desuperheater (Optional)
Evaporator
Circ. 1
condenser
Circ. 2
condenser
Electrical cabinet Manifold (Optional)
Manifold (Optional) Condensers
Desuperheater (Optional)
Desuperheater (Optional)
Evaporator
Compressor
N° 2
Compressor
N° 1
Compressor N° 2
Compressor N° 1
Electrical cabinet Manifold (Optional)
Manifold
(Optional)
Desuperheater (Optional)
Evaporator
Circ. 1 condenser
Circ. 2 condenser
30
35
40
45
50
55
60
65
-8 -4 0510 15-10
AB
C
D
25
Condenser water outlet temperature°C
Glycol required
Evaporator water outlet temperature°C
10.4 Minimum/maximum water flow rates
The flow rates in the exchangers must be maintained between the values given below.
HYDROCIAT
LW - LWP
1800BX
(HPS)
2150BX
(HPS)
2500BX
(HPS)
2800BX
(HPS)
3050BX
HPS
3500BX
HPS
3600BX
HPS
3900BX
HPS
4200BX
HPS
4500BX
HPS
4800BX
HPS
Condenser min. m3/h 40 40 40 43 54
max. m3/h 140 166 192 232 288
Evaporator min. m3/h 50 80 80 80 80 80
min. m3/h 150 231 246 231 246 293
10 - OPERATING LIMIT

EN - 6
LW - LWP 1800BX 1800BX
(HPS)
2150BX 2150BX
(HPS)
2500BX 2500BX
(HPS)
2800BX 2800BX
(HPS)
3050BX
HPS
3500BX
HPS
3600BX
HPS
3900BX
HPS
4200BX
HPS
4500BX
HPS
4800BX
HPS
Installation minimum
volume (litres) 1327 1381 1544 1691 1888 2021 2150 2261 2737 2965 3249 3406 3472 3669 3794
Note: The minimum volumes of chilled water are calculated for the following conditions:
- Chilled water temperature in evaporator: 12°C / 7°C
- Condenser hot water temperature: 35°C
The calculation of the minimum water volume is given for EUROVENT rated conditions, in cooling mode only.
This value is applicable for most air conditioning applications (unit with fan coil units)
Note: For installations running with a low volume of water (unit with air handling unit) or for industrial processes, the buffer tank
is essential.
- The pipes and tubes should not transmit any axial or radial forces to the exchangers or any vibrations.
- The water must be analysed and, if necessary, treated (we recommend contacting a qualified water treatment specialist).
The analysis will reveal whether the water is suitable for use with the various materials it will come into contact with and prevent
the formation of electrolytic couples:
• 99.9% copper tubes brazed with copper and silver
• Threaded bronze couplings or flat steel flanges, depending on the unit model
• Plate heat exchangers (desuperheater option) and AISI 316/DIN 1.4401 stainless steel connections brazed with copper and silver
- The water circuit must have as few bends and horizontal sections at different levels as possible.
- Install a condenser water flow rate modulation valve mounted at the inlet or outlet, to enable the unit to start up whatever the
water temperature conditions
- Install shut-off valves near the water inlets and outlets in order to isolate the exchangers.
- Install manual or automatic air bleed valves at the high points of the circuit(s).
- The manual or automatic air bleed valves fitted on the machine are not intended to be used to bleed the rest of the hydraulic
circuit.
- A static pressure of 1 bar must be maintained at all times (machine and pump off or on) on the pump intake.
- Install drain connections at all circuit low point(s).
- Install the accessories that are essential for any hydraulic circuit (balancing valves, expansion vessel, safety valve, thermometer
pockets, etc.).
- Insulate the pipes and tubes (after performing leak tests) in order to reduce heat losses and prevent damage from frost.
13 - HYDRAULIC CONNECTIONS
Hydraulic connections must be made in accordance with the diagram delivered with the unit. This diagram shows the positions
and dimensions of the water inlets and outlets on the exchangers.
Follow the requirements below when making these connections:
- Ensure the inlet and outlet pipes are connected in the direction shown on the unit.
- In order to meet the operating conditions (flow rates, pressure loss), a sizing calculation must be performed. The diameter of
the pipes may therefore be different to that specified on the exchanger.
- In order to prevent short-cycle protection mode, ensure that the installation volume is greater than the min. volume (Table
below). If this is not the case, a buffer tank must be installed
12 - MAIN COMPONENTS OF THE
REFRIGERATING CIRCUIT
Compressors
HYDROCIAT LW & LWP units use BITZER screw compressors
Oil
The compressor contains a polyester oil (POE), type BSE 170.
Refrigerant
HYDROCIAT LW & LWP
operate with R134a.
The Global Warming Potential (GWP) is 1300 GWP
for R134a, in compliance with standard EN378-1
Exchangers
On HYDROCIAT, the evaporator and condensers are tubular
exchangers.
The evaporators are thermally insulated with 10 mm thick
polyurethane foam. 19 mm insulation is available as an option
(standard fitment for operation with low temperature glycol
water below 0 °C).
The energy transfer fluid must be filtered and internal
inspections must be carried out.
Any repairs or modifications to the exchangers are prohibited.
CIAT only authorises replacement of the exchanger or bundle
by a qualified technician using original equipment. If the heat
exchanger is replaced, this must be noted in the maintenance
booklet.
Electronic expansion valve
All the units are equipped with electronic expansion valves that
are set in the factory to maintain a 5 to 7°C over-temperature
under all operating conditions.
Dryer
Every unit is fitted as standard with a dryer filter to keep the
refrigerating circuit clean and free of moisture. The dryer
filter consists of aluminium oxide and a molecular sieve that
neutralises any acids in the refrigeration circuit.
Liquid sight glass
Located on the liquid line just after the filter dryer, the liquid sight
glass is used to monitor the charge in the unit and to check for
moisture in the circuit. Bubbles in the sight glass mean that the
refrigerant load is insufficient or that non-condensable gases
are in the refrigeration circuit. If the sight glass indicator paper
changes colour, there is moisture in the circuit.
Warning: Some of the sight glasses may turn yellow when the
machine is powered off, as their sensitivity is affected by the
fluid temperature.
The sight glasses should return to green after the unit has been
operating for a few hours.
If the sight glasses remain yellow, there is excessive moisture
in the circuit. A specialist intervention is required.

EN - 7
EN
HYDROCIAT
LW - LWP
1800BX
(HPS)
2150BX
(HPS)
2500BX
(HPS)
2800BX
(HPS)
3050BX
HPS
3500BX
HPS
3600BX
HPS
3900BX
HPS
4200BX
HPS
4500BX
HPS
4800BX
HPS
Condenser , / , Inlet/Outlet
cooling water Ø DN 150 - VICTAULIC
Condenser
water manifold
(optional)
/ Inlet/Outlet
cooling water Ø PN 16 - DN 200 flanges
Evaporator / Inlet/Outlet
chilled water Ø DN 150 - VICTAULIC DN 200 - VICTAULIC
Desuperheater
(Optional) , / , Inlet/Outlet Ø 2’’ no gas 2’’ - DN 50 - VICTAULIC
1*2*
6 8
7
5
5
43
43
2 1
1’
2 ’
7
8
5
6
2
1* 2*
4
1*2*
8
1* 2*
2
2 ’
4
33
3
8
6
6 57
1’ 1
2 ’
1’ 1
7
1
1’
2
2 ’
1 - Condenser inlet - circuit 1
2 - Condenser outlet - circuit 1
1’ - Condenser inlet - circuit 2
2’ - Condenser outlet - circuit 2
1* - Condenser inlet - manifold (option)
2* - Condenser outlet - manifold (option)
3 - Evaporator inlet
4 - Evaporator outlet
5, 7 - Desuperheater inlet (option)
6, 8 - Desuperheater outlet (option)
13.1 Diameters of the hydraulic and refrigeration connections
LW - LWP 1800BX to 2800BX LW - LWP 3050BX to 4800BX
- Install heating elements on all pipes that could be exposed
to frost.
- The installer must provide the necessary systems for filling
and draining the energy transfer fluid.
- To keep the pressure in the coolant circuit below the intended
operating pressure, avoid introducing static or dynamic
pressure into the circuit.
IMPORTANT:
- Flexible couplings must be used on the hydraulic pipework
(evaporator and condenser).
The system pipework must be secured to the wall of the
building and must not place any additional load on the unit.
- Using untreated or incorrectly treated water may cause
corrosion or erosion or the formation of scale, algae or sludge
deposits. CIAT shall not be held liable for damage resulting
from the use of untreated or incorrectly treated water, or of
saline or brackish water.
- To prevent any risk of fouling or damage to the plate heat
exchangers (desuperheater), a strainer filter must be installed
on the water inlets as close as possible to the exchangers, and
in a place which is easily accessible for removal and cleaning.
The maximum mesh size of this filter should be 800 µm.
When the unit is used as a heat pump (DYNACIAT LWP),
the maximum water return temperature of the installation
will be 55°C. Never series-connect the condenser with
a high temperature water network (boiler). Doing so will
result in damage.
NOTE: The maximum operating pressure on the water
side should be 10 bar (evaporator and condenser). The
water flow sensor is supplied fitted to the unit. Stopping
the pumps will automatically cause the unit to stop
to avoid any risk of freezing. The pump or pumps
must be interlocked with the refrigeration unit (auxiliary
operation switch of the pump to be wired, terminal block X2).
If the hydraulic circuit is drained for a period of more than
one month, fill the entire circuit with nitrogen to prevent
any risk of corrosion.
IMPORTANT:
If the unit is exposed to a frost risk, and if the circuit is not
protected by antifreeze, the evaporator and pipes must be
drained.

EN - 8
1
2
1
2
3
Volume concentration in % 0 10 20 30 40
Ethylene glycol Freezing point °C 0 -3 -7 -13 -20
Propylene glycol Freezing point °C 0 -2 -5 -10 -15
1 - Hose clamp
2 - Flange adapter
3 - Vibration damping coupling
4 - Manifold
Inlet / Outlet shell and
tube exchanger
Connection to
hydraulic circuit
Inlet / Outlet shell and
tube exchanger
Connection to
hydraulic circuit
1
2
3
4
Inlet / Outlet shell and
tube exchanger
Connection to
hydraulic system
Important: The values are given for guidance only, according to the standard characteristics of the MEG. As these may vary
depending on the MEG manufacturer, the manufacturer's data must be referred to in order to ensure protection is provided to
the required temperature.
For a glycol concentration greater than 40%, a special pump must be used.
14 - INSTALLATION ANTIFREEZE PROTECTION
The table and the curves below indicate the minimum percentages of glycol with which the system must be provided depending
on the freezing point.
WARNING: The glycol concentration must protect the fluid at least 6°C below the water outlet temperature specified for the
evaporator to allow correct setting of the minimum pressure controller at the evaporator.
Glycol concentration required
3) VICTAULIC / FLANGE adapter kit + flexible coupling + condenser manifold
LW - LWP 1800BX to 2800BX and 1800BX to 4800BX HPS
The manifold is delivered automatically with the flexible couplings (3)
There are three kits available:
1) VICTAULIC / FLANGE adapter kit 2) VICTAULIC / FLANGE adapter kit + flexible coupling
13.2 FLANGE/VICTAULIC adapter kit (optional)
The chilled water inlet and outlet connections are VICTAULIC connections.
A FLANGE/VICTAULIC adapter kit can be supplied separately, to be fitted by the customer on-site to provide a flange connection
on the user side.

EN - 9
EN
15.1 Power connection
The units are designed in accordance with the requirements of
European standard EN 60204-1.
They comply with the requirements of the machinery and
EMC directives.
All wiring must be connected in accordance with the codes and
regulations that apply to the installation site (e.g. NFC 15100
in France).
In all cases:
- Refer to the wiring diagram attached to the unit.
- Follow the electrical supply specifications indicated on
the data plate.
The voltage must remain within the range indicated:
– Power circuit
400 V (+10% / -10 %) - 3-ph - 50 Hz + Earth
* 230 V (+10 % / -10 %) - 3 ph - 50 Hz + Earth
- Control circuit:
1 ~ 50 Hz 230 V (Transformer fitted as standard on
the machine)
* Installation according to French regulations
- Phase unbalance must not exceed 10% for voltage and 10%
for current.
If any of the above requirements are not met, contact your
power supplier immediately and make sure the unit is not
turned on until the necessary corrective actions have been
taken. Failure to do so will automatically void the CIAT
warranty.
Wiring is to be sized by the installer to suit the characteristics
of the installation site and comply with applicable regulations.
Once the size of the wires has been selected, the installer must
determine any changes needed on site to facilitate connection.
- Wiring must be selected based on:
• The maximum rated current (refer to the “Electrical
specifications”).
• The distance between the unit and its power source.
• The protection to be fitted at the power source.
• The neutral mode.
• The electrical connections (refer to the wiring diagram
provided with the unit).
- The electrical connections are to be made as follows:
• Connect the power circuit, after checking that phases L1 /
L2 / L3 are in the right order (photo on page 10).
• Connect the protective conductor to the earth terminal.
- Make the terminal block X2 customer connection
• Connect the general fault display dry contact and the
automatic operation control dry contact (where applicable).
• Interlock the compressors with the accelerator pump.
- The external control must be connected using a potential-free
(dry) contact.
- The disconnect switch has a breaking capacity of 120 kA.
IMPORTANT:
Power factor (cos ρ) correction on-site.
● If cos ρ is > 0.95, there is a risk of "burning out" the compressor
motor (the motor can become a current generator)
● To prevent a cos ρ > 0.95, the compensation installation
must be equipped with a control system to regulate the value
of cos ρ according to the installation’s needs (the condenser
coils must be automatically powered on and off from the mains,
step by step, depending on the cos ρ value, in accordance with
industry practice).
● CIAT reiterates the customer's responsibility to provide a
correctly controlled cos ρ compensation system (a manual
cos ρ control seriously risks damaging the compressors
motors).
The unit is supplied via the lower right section of the electrical
cabinet, with an opening for routing the supply cables.
IMPORTANT:
It is your responsibility to protect the unit from overvoltage
coming from the mains or voltage spikes caused by
lightning. Depending on the geographic location and the
type of mains network (buried or overhead), you may have
to install a lightning rod. Check your local electrical codes
and regulations. Failure to comply with the requirements of
standards in force in the country of installation (e.g. NF C
15100 in France) will void the CIAT warranty
15 - ELECTRICAL CONNECTIONS
Graph of minimum freezing and operating temperatures
-25
-30
-15
-20
-5
-10
0
20 4010 30
-45
-35
-40
0
1
2
3
4
Temperature (°C)
Volume concentration in %
Minimum operating temperature Freezing temperature
1- Monopropylene glycol 3- Monopropylene glycol
2- Monoethylene glycol 4- Monoethylene glycol

EN - 10
Certain operating states can be wired directly to terminal
block X2 provided for this purpose.
Specifications of On/Off inputs:
24 V - 15 mA. - Potential free contact
Specifications of On/Off outputs:
250 V - 2 A. - Potential free contact
Input O = Contact open
Input C = Contact closed
Terminal X2 Description Contact specifications Notes
1Emergency stop On-Off input Input O: Unit off
Input C: Unit authorised to run
2
3Automatic operation control On-Off input Input O: Unit off
Input C: Unit authorised to run
4
5Setpoint 1 / Setpoint 2 selection On-Off input Input O: Setpoint 1
Input C: Setpoint 2
6
7Hydraulic pump automatic operation control On-Off input Input O: Unit off
Input C: Unit authorised to run
8
9Load shedding compressor 1 On-Off input Input O: Compressor available
Input C: Compressor unavailable
10
11 Load shedding compressor 2 On-Off input Input O: Compressor available
Input C: Compressor unavailable
12
13 Customer fault input On-Off input Input O: Fault
Input C: No fault
14
15 Circuit 1 fault On-Off output Input O: Circuit 1 available
Input C: Circuit 1 unavailable
16
Circuit 2 fault On-Off output Input O: Circuit 2 available
Input C: Circuit 2 unavailable
17
18
Fault display On-Off output
Input O: Fault
Input C: No fault
19
18 Input O: Fault
Input C: No fault
20
21 Hydraulic pump 1 control
On-Off output
Input O: Pump off
Input C: Pump on
22
21 Hydraulic pump 2 control Input O: Pump off
Input C: Pump on
23
24 (+) Setpoint variation 4-20 mA Analogue input Analogue signal 4-20 mA
25 (-)
26 Energy load shedding control (Optional) On-Off input Input O: No load shedding
Input C: Load shedding authorised
27
28 Hot/cold control On-Off input Input O: Cooling mode
Input F: Heating mode
29
30 (0V) 3-way valve control Analogue output Analogue signal 0-10V
31 (10V)
HYDROCIAT 1800BX (HPS) to 2800BX (HPS) 3050BX HPS to 3900BX HPS 4200BX HPS to 4800BX HPS
Maximum cable cross-section 2 x 240 mm² 3 x 240 mm² 4 x 240 mm²
L, L2, L3 2 x Ø 12 mm 3 x Ø 12 mm 4 x Ø 12 mm
L4 Ø 10 mm
Terminal X2
Section Stripped length
0.25 mm² to 2.5 mm² from 10 mm to 12 mm
7 6 5 4 3 2 1
X..
Terminal X2
Terminal X2
L1, L2, L3
L4
LW / LWP 1800BX (HPS) to 2800BX (HPS) LW / LWP 3050BX HPS to 4800BX HPS
Cable routing
General power
Cable routing
General power
15.2 Customer connection for remote control functions.

EN - 11
EN
16.1 Electronic control and display module
All units in the HYDROCIAT range and its derivatives are
equipped with an XTRACONNECT 2 microprocessor-controlled
electronic control and display module.
The electronic module controls the operation of the
compressors. Thus, depending on the difference between the
cold water (or hot water) return temperature and the setpoint
temperature, the electronic module will activate or deactivate
the compressors in series.
In a standard configuration of the unit, the cold water or hot
water control sensor is placed on the evaporator water return
(chilled water production use) or condenser (heat pump use).
16.2 Main functions
• Water temperature control:
- Evaporator chilled water
- Condenser hot water
• 4 possible types of control:
- Water return difference.
- Water outlet PID temperature.
- Control according to outdoor temperature
- Low-temperature energy storage.
In the standard configuration, the units use the chilled water
return control.
For PID water outlet temperature control, refer to the
XTRACONNECT 2 control manual.
• Operating settings monitoring.
• Individualised diagnostic of each fault.
• Fault storage in the event of a power failure.
• Management and automatic equalisation of compressor
operating time (multi-compressors).
• Remote control (Start/stop, temperature setpoint adjustment,
operating states, general fault) (OPTIONAL).
• Remote control reporting of operating states and faults using
an interface module (OPTIONAL).
For a detailed description of all these functions, refer to
the XTRACONNECT 2 user manual
16.3 Safety device management
All of the unit's safety devices are managed by the electronic
circuit board in the regulator. If a safety device is triggered
and stops the unit, trace the fault, reset the safety device if
necessary, and then clear the fault with the "RESET" button on
the XTRACONNECT 2 console.
The unit will restart when the minimum time required by the
short-cycle protection elapses. For the setting values of the
different safety devices and the fault clearance procedures,
refer to the XTRACONNECT 2 controller manual.
ØLow pressure control (LP)
Each unit includes one low pressure sensor per refrigerating
circuit as standard. This sensor enables the user to display the
LP value and enables the electronic module to provide a safety
function by ensuring that the LP value does not fall below the
threshold parameter in the regulator.
ØHigh pressure control (HP)
• High pressure switch.
Each refrigeration circuit is equipped with two HP pressure
switches.
The HP safety pressure switch is the main safety device for
the unit during operation. It is set according to the type of
fluid. Thus, when the HP value exceeds the preset value of the
pressure switch, power to the compressor(s) in the refrigerating
circuit concerned is cut off and the fault is indicated by an LED
on the controller console.
The HP pressure switches are reset manually, thus any fault
will be cleared by resetting the pressure switch and by pressing
the RESET button on the console.
• High pressure sensor
Each unit includes one high pressure sensor per refrigerating
circuit as a standard item. This sensor enables the user to
display the HP value and enables the electronic module to
perform two functions: control of the unit and safety.
ØEvaporator frost protection
The evaporator is protected against freezing by two probes:
• Evaporator chilled water outlet sensor
The evaporator is equipped with a frost protection sensor (located
on the chilled water outlet) which monitors the temperature of the
fluid to be cooled. If this temperature falls below the value set on
the controller, power to the compressors is cut off and the fault is
indicated by an LED on the controller console. This probe acts
as a safety device and must therefore never be moved by the
customer.
• Circuit 1 or 2 pressure sensor (LP).
This sensor monitors the pressure in the evaporator.
If this temperature falls below the set value in the regulator,
power to the compressor in the refrigerant circuit concerned
is cut off and the fault is indicated by an LED on the regulator
console.
ØEvaporator water circulation controller
Every unit is fitted with a water circulation control device as
standard. Thus, if the water flow rate is insufficient, the power
supply to the compressors is cut and an LED indicates the fault
on the controller console.
ØInternal compressor protection
All the models in the LW & LWP range are protected against
electric motor overheating, and against compressor reverse
rotation and excessive discharge temperatures. These functions
are performed by the SE-E1 protection module installed in the
compressor terminal box.
If there is a fault, the circuit concerned is shut down and
indicated by an LED on the console.
16 - CONTROL AND SAFETY DEVICES
Communication
• In the room, a control and display console is used to run an instant check on the unit; it enables the user to communicate with
the microprocessor, to configure the unit and to adjust the setpoints.
• Electronic remote control (option):
Installed in the machine room, this will be connected to the unit by a pair of telephone-type wires (max. distance 1000 m).
Description of functions and connection; see XTRACONNECT 2 manual.
• Relay board(s) (option):
This board is installed in a cabinet in the machine room and can remotely report on all the unit's operating states and faults
by providing potential-free make contacts. The board will be connected to the unit by a pair of telephone-type wires (max.
distance 1,000 m).
Description of boards and connection; see XTRACONNECT 2 manual.
• Communication with centralised management system (option).
• See XTRACONNECT 2 manual for option.

EN - 12
CP1 ... 2: Compressors
EV: Evaporator
CD 1 ... 2: Condensers
C1 ... 2: Circuit 1 ... 2
Ds: Desuperheater
FS: Water circulation control
differential pressure switch
HP1
High Pressure Switch
3-way valve
Manual valve
Hygroscopic sight glass
Dryer filter
Solenoid valve
Safety valve
Check valve
P
HP/LP sensor
Expansion valve
Sensors:
B1 outdoor air sensor, 10 kΩ
B2 evaporator water inlet sensor, 10 kΩ
B3 evaporator water outlet sensor, 10 kΩ
B7 circuit 1 discharge sensor, 50 kΩ
B9 circuit 1 suction sensor, 10 kΩ
B12 circuit 2 discharge sensor, 50 kΩ
B15 circuit 2 suction sensor, 10 kΩ
B16 circuit 3 discharge sensor, 50 kΩ
B17 circuit 3 suction sensor, 10 kΩ
On LW only:
B5 condenser water inlet sensor, 10 kΩ
B6 condenser water outlet sensor, 10 kΩ
Note: Sensors B1, B5 and B6 are available and
coiled in the unit's electrical cabinet
OPTION 1: Valve double fitting on 3-way valve
OPTION 2: Suction valve
16.7 Location of the safety sensors and devices
Key for the diagrams below
A phase monitor is installed on all the models.
It provides the following functions:
- Controls the direction of rotation of each phase
- Phase asymmetry
- Detects the absence of one or more phases
- Monitors for overvoltage and undervoltage
ØDischarge sensor
Each unit includes one discharge sensor per refrigerating
circuit as standard. This sensor located on the discharge
piping makes it possible for the user to view the discharge
temperature value, and enables the controller to provide a
safety function.
If the discharge temperature exceeds the maximum
temperature threshold set in the controller, the power supply
to the refrigeration circuit compressors is cut, and the fault is
indicated by an LED on the controller console.
ØOverpressure protection
Each refrigerating circuit in each unit is protected against the risk
of overpressure resulting from fire.
• Safety valves
- The safety valves protect the HP and LP circuits against
overpressure caused by an increase in the outdoor temperature,
when the unit is off. (E.g.: external fire)
- This safety valve is not considered a safety device as defined
in section 2.11 of appendix 1 of the pressure equipment
directive.
• Allowable pressure (PS) LP side
- The LP value (given on the data plate) corresponds to
the situation with the unit switched off. This value is given
according to the pressure/temperature ratio with an outdoor
temperature of 50 or 60°C, depending on the unit. These
temperatures correspond to the least favourable situation the
unit could be subjected to, excluding an external fire.
The LP side pipes are sized for the maximum allowable
pressure.
The LP value is linked to the relevant unit and cannot be
exceeded. If it is exceeded, see section "21 Troubleshooting
operating problems".
16.4 Electronic expansion valve
The electrical equipment for the electronic expansion valve is
installed in the electrical cabinet.
All the expansion valve operating parameters are preset,
including evaporator superheating. Only qualified, experienced
personnel can carry out configuration.
A 24 V backup battery is built into the driver. It allows the
expansion valve to be closed in the event of a power failure.
Important: the valve must not be moved when there is no
refrigerant flow rate. When the system is stopped or evacuated,
the start-up dry contact must remain open.
16.5 Oil safety
The oil safety function is provided via HP/LP sensors situated
on the compressor. If the pressure difference is not 3 bar after
10 minutes' operation, the compressor shuts down.
The design of the oil circuit is the same as the screw
compressor design. However, for this type of screw, an oil
separator is directly fastened onto the compressor crankcase
on the high pressure side with an oil reservoir.
The oil circulation results from the HP/LP pressure difference
at the injection point. Oil reaches the injection point, after
circulating through an over-capacity filter cartridge, and
then comes to the ball bearings and the screw profile
spaces. The oil flow is driven, jointly with the suction gases,
in the direction of compression. In addition to lubrication,
the oil provides the sealing between the screws, and
between the crankcase and screws. The oil again ends up,
at the same time as the compressed gases, back in the oil
separator. In the separator, the oil and gases are separated in
a highly efficient three-stage process (change of flow direction,
coalescence by metal strainer, gravity over a long stabilisation
distance). The oil that accumulates in the lower part of the
separator is then directed to the compressor.
16.6 Setting the compressor capacity
The compressors are equipped as standard with continuous
"stepless" power control (slide drawer control). The power
variation is provided simply by means of magnetic valve
control.
A special slide drawer geometry is used to adjust the
integrated volume (Vi) to the load conditions. This enables very
high levels of efficiency to be achieved.

EN - 13
EN
LW - LWP 3050BX to 4800BX with electronic expansion valve
BP1
(BP2)
B3 B2
FS
B9
(B15)
BP1
(BP2)
BP3
(BP4)
B6 B5
B7
B12
HPS
HPS
P
P
HP1
(HP2)
HP3
(HP4)
HP1
(HP2)
BBP1
(BBP2)
BHP1
(BHP2)
YE1
(YE2)
(HP2)
HP1
(HP4)
HP3
P
BBP1
(BBP2)
C1
C2
C1
C2
B25
(B26)
RA
YIL1
(YIL2)
CP1 CP2
CD1
CD2
EV
STANDARD
Water Water
CUSTOMER CONNECTIONS
Circuit 2 inlet
Circuit 2 suction
Pressure-
reducing
regulator
OPTION 1: HP valves on
3-way valves
EVAPORATOR
OPTION 2:
Suction
valve
Liquid
injection
valve
Eco valve
OPTION: Desuperheater
Water
Water
CIRCUIT 2 (etc.)
Same installation principle
as circuit 1
CIRCUIT 1
CONDENSER
Outdoor sensor
LW - LWP 1800BX to 2800BX with electronic expansion valve
B1
BP1
(BP2)
B3 B2
FS
B9
(B15)
BP1
(BP2)
BP3
(BP4)
B7
B12
HPS
HPS
P
P
HP1
(HP2)
HP3
(HP4)
HP1
(HP2)
BBP1
(BBP2)
BHP1
(BHP2)
YE1
(YE2)
(HP2)
HP1
(HP4)
HP3
P
BBP1
(BBP2)
CP1 CP2
C1
C2
C1
C2
B25
(B26)
RA
YIL1
(YIL2)
B6 B5
Ds
CD1
CD2
EV
OPTION 1: LP valves on
3-way valves
Water Water
CUSTOMER CONNECTIONS
Circuit 2 inlet
Circuit 2 suction
Pressure-
reducing
regulator
HPS version
STANDARD
OPTION 1: HP valves on
3-way valves
EVAPORATOR
OPTION 2:
Suction
valve
Liquid
injection
valve
Eco valve
STANDARD
OPTION:
Desuperheater
Water
Water
CIRCUIT 2 (etc.)
Same installation principle
as circuit 1
CIRCUIT 1
CONDENSER
Outdoor sensor

EN - 14
Units Function Electrical symbol Settings
Outdoor temperature sensor Adjust the setpoint according to
the outdoor temperature B1
Xtraconnect2 controller
Chilled water inlet sensor Control of the unit on the water return B2
Evaporator chilled water outlet
sensor
Unit control if controller
on water outlet
Evaporator frost protection
B3
Condenser water inlet sensor B5
Condenser water outlet sensor B6
Discharge sensor
circuit 1 / circuit 2 Compressor protection B7 / B12
Suction sensor
circuit 1 / circuit 2 B9 / B15
Refrigerant liquid sensor
circuit 1 / circuit 2 Compressor suction temperature measurement B25 / B26
Suction sensor
circuit 1 / circuit 2 Electronic expansion valve overheating monitoring B20 / B21 Expansion valve driver
Checks prior to system start-up: Always read this manual
in full before attempting to commission the system.
Comply with applicable national regulations during testing and
installation.
Before commissioning the system, carry out the following
checks:
- Compare the complete system against the refrigeration and
wiring diagrams.
- Make sure that all components are as specified on the
drawings.
- Make sure that no documents and safety devices required by
applicable European standards are missing
- Make sure that there is sufficient clearance around the
system for maintenance and emergency purposes.
- Check the assembled couplings.
- Check the quality of the welds and seals, and check for any
refrigerant leaks.
- Make sure that all mechanical guards are in place and
functional.
- Look into the problems of specific noise generated
by the installation.
- Remove the 4 fastening screws from each compressor,
models 1800BX (HPS) to 2800BX (HPS) (fastening screws,
coloured red for shipment).
Screws to be removed
Check that the discharge valves and liquid outlet valves are
open.
- Close the drain valve under the evaporator.
- After opening the water circuit valves, make
sure that water is flowing in the cooler while the
pump is running.
- The air in the hydraulic circuit must be bled before system
the system is commissioned.
For this operation, the pump(s) must have been started up.
To enable operation without triggering the compressor(s), all
our machines are delivered with the parameter "compressor on
authorisation" set to "NO".
The operation can therefore be carried out without the risk of
starting up the compressor(s) by setting the machine controller
to the "ON" position.
Once the hydraulic circuit has been bled, the machine is
commissioned by switching the "compressor ON authorisation"
parameters to "YES", so as to authorise start up.
List of parameters concerned:
- P227 Compressor 1 ON authorisation
- P228 Compressor 2 ON authorisation
- Check the operation of the chilled water circulation controller
and interlock.
- Check for loose clamps on all
pipes
- Check for loose electrical connections
- Make sure current is supplied to the general connection
and that the voltage supplied remains within the
acceptable limits (+10% to -10% compared to the
rated voltage)
- 6 hours before the device is to operate, power up the
compressor crankcase heaters, with circuit breakers QT and
QT1 engaged.
- After 6 hours, touch the crankcases to ensure that all heaters
have been working correctly (they should be lukewarm)
- Run the cold emitters to provide a thermal load so that the
water chillers can operate.
Check the configuration of the Xtraconnect 2 controller and
activate, following the instructions in the Xtraconnect 2 manual
Flexible couplings must be used on the hydraulic
pipework (evaporator and condenser).
17 - COMMISSIONING
16.8 Adjusting the control and safety devices

EN - 15
EN
max.
min.
17.1 Commissioning
The system must be started and commissioned by a qualified
technician.
- The system must be charged with refrigerant and water
flowing in the exchangers when it is turned on and tested.
- Power up the main board
- Check that the machine is configured for local control
(regulator selection)
- Select the operating mode
using the button
(use in chilled water or hot water unit mode)
- Enter the setpoints for:
- chilled water
- hot water
- Start up the unit by pressing
the On/Off button.
- The internal safety devices are now activated. If one of these
safety devices is triggered, trace the fault, reset the safety
device if necessary and press the RESET button on the
console to clear the fault.
- The unit can only be started after 2 minutes (time required to
scan and enable all the safety devices). The control stages
should operate in cascade mode based on the demand.
Use either of the following to turn off the unit in non-
emergency situations:
- The On/Off button on the console
- A dry contact on the automatic operation control.
Do not use the master switch as the electrical panel must
remain live (antifreeze protection, crankcase heater).
17.2 Essential points that must be checked
- That the discharge heats up
- That the current input is normal (see table and values displayed on the
compressors)
- Check the operation of all the safety devices (see table for setting value).
Compressors:
Ensure that each compressor is rotating in the correct direction,
checking that the discharge temperature rises quickly, the
HP increases and the LP drops. If it is rotating in the
wrong direction, the electric power supply is incorrectly wired
(reversed phases). To ensure rotation in the correct direction,
swap the two power supply phases.
- Check the compressor discharge temperature using a contact
sensor.
- Check all safety devices to make sure they operate correctly.
- During activation and maintenance, the oil level must be
checked; it must be visible in the sight glass, both at full load
and power reduction. Top up if necessary.
Oil level
in operation
Do not mix the oil with other lubricants!
BSE170 oil load Only check the oil level
in operation
Refrigerant charge:
LW & LWP units are dispatched with a precise refrigerant load.
To make sure that the unit is filled with the correct charge of
refrigerant, perform the following checks circuit by circuit with the
system running at full capacity:
- Check the overheating value which must be between 6 and 9 °C
depending on the type of unit.
- Check the actual subcooling value at the condenser outlet. It
must be between 5 and 8°C, depending on the type of unit.
- Check there are no bubbles in the liquid sight glass.
If the charge is too low, large bubbles will appear in the liquid
sight glass, the suction pressure will drop and overheating on the
compressor inlets will be high. Locate the leak, completely drain
the refrigerant charge using a recovery machine, and fill the unit
with a new charge. Repair the leak, pressure test the unit (do not
exceed the maximum service pressure on the low pressure end)
then refill the unit. The refrigerant must be liquid and charged via
the liquid charging valve. The amounts of refrigerant indicated
on the data plate must be added to each circuit in the unit.
Repeat these steps if the subcooling temperature is below the
specified values.
NB:
An excessively low suction pressure or an excessively
high condensation pressure may sometimes be read when
commissioning the unit. These faults may have several causes.
Refer to the "Troubleshooting operating problems" paragraph.

EN - 16
HYDROCIAT LW - LWP 1800BX 1800BX
HPS 2150BX 2150BX
HPS 2500BX 2500BX
HPS 2800BX 2800BX
HPS
Versions: Standard - Low Noise
Net cooling capacity kW 417 432 490 531 585 622 657 688
Net power input kW 95 98 113 118 130 139 145 152
net EER / ESEER 4.41 / 4.89 4.42/5.01 4.35/4.81 4.45/5.06 4.51/4.92 4.49/5.11 4.53/5.12 4.53/5.26
Lw / Lp Standard dB(A) 93/61 94/62
Lw / Lp Low Noise dB(A) 85/53 87/55 85/53 86/54
Refrigeration circuit
Refrigerant (GWP) R134a (GWP = 1300)
Quantity 2
Refrigerant charge circuit 1 kg 34 39 50 53 53 52 59 52
circuit 2 kg 35 40 42 44 53 52 59 52
Compressors
Type Double-screw accessible hermetic
Quantity 2
Rotation speed rpm 2900
Start-up mode STAR - DELTA
Oil type BITZER BSE 170
Oil capacity litres 2 x 15 19 + 15 2 x 19
Power control % Continuous from 25 to 100 % (50 to 100% on each compressor)
Evaporators
Type Dry expansion shell and tube
Quantity 1
Water content litres 171 219
Min / max water outlet temperature °C -8°C / +150°C
Min/max water flow m
3
/h 50 / 150
Hydraulic connection Ø VICTAULIC DN 150
Design pressure water side bar 10
refrigerant side bar 13
Test pressure water side bar 14.3
refrigerant side bar 26
Water condensers
Type Shell and tube
Quantity 2
Water content litres 2 x 28 36 + 28 2 x 36
Min / max water outlet temperature °C +30°C / +60°C
Min/max water flow m
3
/h 40 / 140 40 / 166 40 / 192
Hydraulic connection Ø VICTAULIC DN 150
Design pressure water side bar 10
refrigerant side bar 30
Test pressure water side bar 14.3
refrigerant side bar 60
Dimensions and weight
Height standard mm 2450
compact mm 1860 1970
Length mm 3800 4700
Depth mm 1320
Weight (empty) kg See section 9.1 Dimensions and weight
Weight in operation kg
 Net cooling capacity for evaporator chilled water temperature
12°C / 7°C, and condenser hot water temperature 30°C / 35°C
- EN 14511, EUROVENT conditions
Compressor net power input
LW: Overall power level as per standard ISO 3744
Lp: Overall pressure levels measured at 10 metres in a free
field, calculated using the formula Lp = LW- 10 log S
Height excluding handling mounts
18 - TECHNICAL DATA
18.1 General specifications

EN - 17
EN
HYDROCIAT LW - LWP 3050BX
HPS
3500BX
HPS
3600BX
HPS
3900BX
HPS
4200BX
HPS
4500BX
HPS
4800BX
HPS
Versions: Standard - Low Noise
Net cooling capacity kW 811 918 953 1040 1075 1129 1164
Net absorbed power kW 170 198 201 221 229 248 258
net EER / ESEER 4.77 / 5.49 4.64 / 5.17 4.75 / 5.51 4.71 / 5.44 4.69 / 5.39 4.55 / 5.24 4.52 / 5.21
Lw / Lp Standard dB(A) 92/60 94/62 93/61 94/62 95/63
Lw / Lp Low Noise dB(A) 89/57 90/58 89/57 90/58 91/59
Refrigeration circuit
Refrigerant (GWP) R134a (GWP = 1300)
Quantity 2
Refrigerant charge circuit 1 kg 71 74 71 73 75 75 75
circuit 2 kg 60 60 71 72 73 74 75
Compressors
Type Double-screw accessible hermetic
Quantity 2
Rotation speed rpm 2900
Start-up mode STAR - DELTA
Oil type BITZER BSE 170
Oil capacity litres 30 + 19 2 x 30
Power control % Continuous from 25 to 100 % (50 to 100% on each compressor)
Evaporators
Type Dry expansion shell and tube
Quantity 1
Water content litres 180 335 180 335 391
Min / max water outlet temperature °C -8°C / +150°C
Min/max water flow m
3
/h 80 / 231 80 / 246 80 / 231 80 / 246 80 / 293
Hydraulic connection Ø VICTAULIC DN 200
Design pressure water side bar 10
refrigerant side bar 20
Test pressure water side bar 14.3
refrigerant side bar 29
Water condensers
Type Shell and tube
Quantity 2
Water content litres 36 + 57 2 x 57
Min / max water outlet temperature °C +30°C / +60°C
Min/max water flow m
3
/h 43 /232 54 / 288
Hydraulic connection Ø VICTAULIC DN 150
Design pressure water side bar 10
refrigerant side bar 30
Test pressure water side bar 14.3
refrigerant side bar 60
Dimensions and weight
Height standard mm 1895
compact mm -
Length mm 4538 4567 4538 4567
Depth mm 1500
Weight (empty) kg See section 9.1 Dimensions and weight
Weight in operation kg
 Net cooling capacity for evaporator chilled water temperature
12°C / 7°C, and condenser hot water temperature 30°C / 35°C
- EN 14511, EUROVENT conditions
Compressor net power input
LW: Overall power level as per standard ISO 3744
Lp: Overall pressure levels measured at 10 metres in a free
field, calculated using the formula Lp = LW- 10 log S
Height excluding handling mounts

EN - 18
HYDROCIAT LW - LWP 1800BX 1800BX
HPS 2150BX 2150BX
HPS 2500BX 2500BX
HPS 2800BX 2800BX
HPS
Compressors
Voltage 3 ph / 50 Hz / 400 V (+10 % / - 10 %)
Maximum rated current A 288 (2 x 144) 331 (187 + 144) 374 (2 x 187) 418 (2 x 209)
Start-up current (Star - Delta) A 317 406 436 473
Breaking capacity kA 25
Max. wire cross-section mm² 2 x 240
Auxiliary circuit
Voltage 1 ph / 50 Hz / 230 V
Transformer capacity VA 1600
Maximum rated current A 4
Protection
rating
machine IP 21
electrics box IP 21
HYDROCIAT LW - LWP 3050BX
HPS
3500BX
HPS
3600BX
HPS
3900BX
HPS
4200BX
HPS
4500BX
HPS
4800BX
HPS
Compressors
Voltage 3 ph / 50 Hz / 400 V (+10 % / - 10 %)
Maximum rated current A 445 (258 + 187) 515 (306 + 209) 516 (2 x 258) 564 (306 + 258) 603 (345 + 258) 651 (345 + 306) 690 (2 x 345)
Start-up current (Star - Delta) A 587 718 636 757 821 849 871
Breaking capacity kA 25
Max. wire cross-section mm² 3 x 240 4 x 240
Auxiliary circuit
Voltage 1 ph / 50 hz / 230 V
Transformer capacity VA 2000
Maximum rated current A 5
Protection
rating
machine IP 21
electrics box IP 21
HYDROCIAT
LW - LWP
1800BX
(HPS)
2150BX
(HPS)
2500BX
(HPS)
2800BX
(HPS)
3050BX
HPS
3500BX
HPS
3600BX
HPS
3900BX
HPS
4200BX
HPS
4500BX
HPS
4800BX
HPS
500 V knife fuses, type aM size 1 (DIN 43620)
Fuse ratings
CP 1 A 160 250 250 250 315 400 315 400 250 250 250
CP 2 A 160 160 250 250 250 250 315 315 315 400 250
Handle to use for inserting and
removing fuses (supplied)
Compressor fuses
 Starting current of largest compressor + maximum current of other compressors at 50% load.
Cable selection rated current = sum of maximum rated currents indicated in tables above.
18.2 Electrical specifications