CHGV
AIR COOLED WATER CHILLER
WITH HYDRAULIC EQUIPMENT
AIR / WATER
47 to 78 kW
CHGV 50
CHGV 64
CHGV 72
CHGV 80
November 2007
10 12 167 - GB - 02
TECHNICAL INSTRUCTIONS
PHRV heat pump model also available
2
CONTENTS
1 - Application - Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 - Presentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 - Technical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4 - Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5 - Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
6 - Cooling performances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
7 - Corrections to be made when using anti-freeze . . . . . . . . . . . . . .8
8 - Curves of available pressures . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
9 - Sound levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
10 - Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
11 - "ECH" electronic control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
12 - Installation information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
MARKING
This product marked conforms to the essential requirements of the Directives:
- Low voltage no 2006/95/EC.
- Electromagnetic Compatibility no. 89/336 EEC, modified 92/31 EEC and 93/68 EEC.
- Pressure Equipment Directive No. 97/23/EC.
1 - APPLICATION - USE
• Air cooled type chilled water generator intended for climate control in buildings.
• Single package unit, factory assembled and tested.
•
Designed for outdoor installation.
• Supplied fully charged with R 407 C refrigerant.
• Convenient hydraulic and electrical connections.
• Practical service access via removable panels.
R 407 C
• Fluid R 407 C, as opposed to R22, is not a pure fluid but a
blend composed of:
- 23% R 32 + 25% R 125 + 52% R 134 A.
• The compressors approved for operation with this fluid are
filled beforehand with polyalcohol oil.
Contrary to mineral oil, it is very hygroscopic: it absorbs the
humidity of the ambient air very quickly. This can modify its
lubricant properties and lead in time to the destruction of the
compressor.
MAINTENANCE INSTRUCTIONS
1
- Never add oil to the appliance; the compressor is filled
with polyalcohol oil, a special oil which cannot tolerate the
presence of other oils.
2 - The instruments used for:
- filling,
-
pressure measurements,
- emptying under vacuum,
- recovering the fluid,
must be compatible and only used for the R 407 C fluid.
3 - The weight of the refrigerant contained in the storage
bottle must be checked constantly
. Do not use it from the
moment the remaining weight is less than 10% of the total
weight.
4 - In the case of a new charge:
- do not use the charging cylinder,
- use a balance and a dip pipe type R 407 C cylinder,
- charge the weight of R 407 C as per the value indicated
on the unit’s identification plate,
- IMPORTANT: see instruction 3 above.
5 - The charge must be undertaken in liquid phase.
6 - In case of leakage, do not complete the charge: recover
the remaining refrigerant for recycling and perform a total
charge.
Recovery, recycling or the destruction of the fluid must be
done in compliance with the laws in force in the country
concerned.
7 - If the refrigerant circuit is opened, you must:
- avoid the entry of air into the circuit as much as
possible,
- replace the filter drier,
- perform the "vacuum operation" at a minimum level of
0.3 mbar (static).
8 - Do not release R 407 C fluid into the atmosphere. This
fluid is a fluorinated greenhouse gases, covered by the
Kyoto Protocol with a Global W
arming Potential
(GWP) = 1653 - (CE Directive 842 / 2006).
APPLIANCES FILLED WITH R 407 C
3
2 - PRESENTATION
• CHGV: An air cooled chilled water generator with built-in hydraulic
equipment.
Model
2 refrigerant circuits
R 407C 50 / 64 / 72 / 80
Refrigerant
b
a
5
9
7
4
3
2
1
6
8
Water inlet
Water outlet
SCROLL COMPRESSOR
• Mounted on vibration pads with sound insulation.
• 1 per circuit.
WATER EXCHANGER
• Plate water exchanger with heat insulation.
• 1 per circuit.
AIR EXCHANGER
• Thin plate air exchanger with protective grille.
• 1 per circuit.
ELECTRIC F
AN UNIT
•
E
lectric fan unit with protective grille.
• 1 per circuit.
SWITCH BOX
• “ECH” electronic control .
•
Main switch
.
• Phase-sequence tester.
• Power and control circuitry protected by magnetothermal
circuit breakers.
• Complies with standard EN 60 204-1.
• Short circuit current 10 kA, as per IEC 947-2.
CIRCULATING PUMP
• Circulating pump with heat insulation.
EXPANSION TANK
REFRIGERATION CIRCUITS
• R407C loads.
• Copper piping.
• Thermostatic regulator.
•
Filter-dryer.
• HP and LP safety pressure switches.
CHASSIS - BODYWORK
•
Galvanised sheet metal with light grey oven-baked
polyester powder paint (RAL 7035).
9
8
7
6
5
4
3
2
1
4
3 - TECHNICAL CHARACTERISTICS
CHGV 50 CHGV 64 CHGV 72 CHGV 80
kW 47.60 62 67 78
kW 20.60 26.40 28.80 29.40
(EER) 2.31 2.35 2.33 2.65
kW 25 32 36 36.6
A 42.80 56.30 60.40 64.80
A 38.70 47.70 54 55.50
A 170 185 225 225
mm
2
16 16 25 25
m3/h 8.21 10.66 11.52 13.43
L/s 2.28 2.96 3.20 3.73
kPa 220 160 180 90
Electrical supply cable section
Nominal water flow
Available pressure
Model
Heating capacity
Nominal power consumption *
Effictuiveness heating *
Rated total input amperage
Total Max. power consumption **
Total Max. current consumption **
Starting current
(*) Gross value without hydraulic pump.
(**) In the operating range.
•
Power supply:
400V (±10%) / 3 Ph + Neutral + Earth / 50Hz
•
Nominal operating conditions:
- water inlet temperature : + 12°C
- water outlet temperature : + 7°C
- outdoor dry bulb temperature (dry) : + 35°C
•
Operating limits (pure water):
- temperature of inlet air to condenser : - 10°C to + 45°C
- water outlet temperature : + 4°C to + 20°C
•
Water system pressure: 1.5 to 3 bar.
Consult us for any special climatic conditions departing significantly from the nominal conditions.
5
4 - PHYSICAL CHARACTERISTICS
Dimensions (in mm) are
given for standard units
without options.
General tolerance ±10 mm.
Condenser air discharge
Condenser air suction
a Chilled water inlet connection
b Chilled water outlet connection
c HP and LP hose entry
Electrical connections
Location of the 4 anti-vibration pads
(accessory) (100 x 100 x 25 mm) under
girders
G Centre of gravity (in the centre of the unit)
b
c
a
1
,955
x
G
1,175 (1,425 CHGV 80)
125
1,050
950
180
2 LP pressure
gauges (Accessory)
2 HP pressure
gauges (Accessory)
4 Ø 22.5 mm holes
for sling attachment
300
300
1000
300
(600 with tank)
• Clearances to be respected for unit
operation and maintenance.
• No obstacle less than 3 m above
the unit.
Front
Net Packed
weight weight Length 2,015 mm
50 500 kg 540 kg Depth 1,135 mm
64 534 kg 574 kg 1,370 mm
72 556 kg 596 kg 1,620 mm
80 606 kg 646 kg CHGV 80
Overall
packed
dimensions
Height
Net Packed
weight weight Length 1,990 mm
Tank Depth 1,110 mm
without heating Height 806 mm
185 kg
207 kg
Overall packed
dimensions
Access to switch box
CHGV
4.1 - CHGV
4.2 - 300-LITRE BUFFER TANK (ACCESSORY)
cba
1,955
315
1,050
1,300
611
40
160
4 Ø 22.5 mm holes
for passing slings for
handling the tank only
300
600
1000
300
•Clearances to be respected for
maintenance.
Front
Buf
fer tank
Hydraulic
connection
tube
6
5 - DESCRIPTION
CHGV 50 CHGV 64 CHGV 72 CHGV 80
2 2 2 2
kg 2 x 7.25 2 x 8 2 x 9 2 x 12.5
• • • •
Number 2 2 2 2
Power supply 400V / 3 / 50Hz
Nominal current per compressor A 17.00 20.80 23.10 23.80
Nominal power consumed by the compressor kW 9.90 12.50 14.30 14.70
• • • •
Number 2 2 2 2
Air flow
m3/h 9,800 11,000 11,000 11,000
Diameter mm 760 760 760 760
Max. rotation speed (motor) rpm 620 660 660 660
Power consumption per motor kW 0.75 0.85 0.85 0.85
• • • •
Number 2 2 2 2
• • • •
Number 2 2 2 2
Water capacity liters 4 5 6 7
Male 1"1/2 coupling (40x49)
Minimum installation water volume * liters 120 160 170 200
Maximum installation water volume ** liters 1,500 1,500 1,500 1,500
Expansion tank (1.5 bar)
Tank capacity liters 18 18 18 18
Safety valve (3 bar) with pressure gauge
Differential water output pressure switch
Output control valve
Fill valve (ø 1/4" female)
Water filter supplied (not installed)
Circulating pump
Maximum power consumption (pump only) kW 1.40 1.40 1.90 1.90
Maximum current A 2.70 2.70 3.50 3.50
Power supply 400V / 3 / 50Hz
Electrical equipment IP 24 IP 24 IP 24 IP 24
Mechanical risks B B B B
Hermetic SCROLL compressor with soundproofing and internal
thermal protection
Model
Cooling circuit (number) with HP and LP pressure switches
R 407 C refrigerant charge
3.50
3.90
3.90
3.90
•••
•
Hydraulic circuit
Helicoidal electric fan, direct coupling, with internal thermal protector
General electrical power supply 400V / 3N + Earth / 50Hz
Equipment protection index
Water exchanger with stainless steel brazed plates AISI 316 L with
thermal insulation
Air exchanger with protective grille, copper tubes, aluminium fins
230V / 1 / 50Hz power supply with speed control for condensation
pressure control
Nominal current per motor (single-phase 230 VAC)
A
(*)
If the water volume of the system is below the minimum, a buf
fer tank must be installed.
(**)
If the water volume of the system is above the maximum, an additional expansion tank is required.
7
6 - COOLING PERFORMANCES
4 6 8 10 12 14 16 18 20
10
20
30
40
50
4 6 8 10 12 14 16 18 20
22
24
26
28
30
32
34
36
38
4 6 8 10 12 14 16 18 20
17
19
21
23
25
27
29
31
33
4 6 8 10 12 14 16 18 20
12
14
16
18
20
22
24
4 6 8 10 12 14 16 18 20
50
60
70
80
90
100
110
120
130
4 6 8 10 12 14 16 18 20
40
50
60
70
80
90
100
110
4 6 8 10 12 14 16 18 20
40
50
60
70
80
90
100
110
4 6 8 10 12 14 16 18 20
38
42
46
50
54
58
62
66
70
74
78
TOTAL INPUT POWERCOOLING CAPACITY
CHGV 50
CHGV 64
CHGV 72
CHGV 80
Water outlet temperature (°C)
Cooling capacity (kW)
Water outlet temperature (°C)
Total input power (kW)
Water outlet temperature (°C)
Cooling capacity (kW)
Water outlet temperature (°C)
T
otal input power (kW)
Water outlet temperature (°C)
Cooling capacity (kW)
Water outlet temperature (°C)
Total input power (kW)
Water outlet temperature (°C)
Cooling capacity (kW)
Water outlet temperature (°C)
Total input power (kW)
∆ T (water) between 4 and 6°K.
Out. temp. = 15
°
C
Out. temp. = 25°C
Out. temp. = 35°C
Out. temp. = 45
°C
Out. temp. = 19
°
C
Out. temp. = 25°C
Out. temp. = 35°C
Out. temp. = 45°C
Out. temp. = 19
°C
Out. temp. = 25°C
Out. temp. = 35
°C
Out. temp. = 45°C
Out. temp. = 19°C
Out. temp. = 25°C
Out. temp. = 35°C
Out. temp. = 45°C
Out. temp. = 45°C
Out. temp. = 35°C
Out. temp. = 25°C
Out. temp. = 19°C
Out. temp. = 45°C
Out. temp. = 35°C
Out. temp. = 25°C
Out. temp. = 19°C
Out. temp. = 45°C
Out. temp. = 35°C
Out. temp. = 25°C
Out. temp. = 19°C
Out. temp. = 45°C
Out. temp. = 35°C
Out. temp. = 25°C
Out. temp. = 15
°
C
8
9 - SOUND LEVELS
• Nominal operating conditions:
- Ambient temperature: 35°C.
• Sound-pressure level:
- Unit installed outdoors (free field) on a reflective surface.
- Measurement carried out at a distance of 10 m.
40
35
30
25
10 15 20 25 30
Distance in meters
dB to be
deducted from
the sound
power level
Power level Sound-pressure level
(dBA) (dBA)
50 78 50
64 82 54
72 87 59
80 87 59
CHGV
8 -
AVAILABLE PRESSURE CURVES ON THE HYDRAULIC SYSTEM
5 6 7 8 9 10 11 12 13 14 15
0
50
100
150
200
250
300
CHGV 80
CHGV 72
CHGV 64
CHGV 50
Water flow rate (m3/h)
Available head (kPa)
7 - CORRECTIONS TO BE MADE WHEN USING ANTI-FREEZE
•
V
alues at apparatus outlet without tank. (See § 10.5 for tank pressure losses).
10 - ACCESSORIES
10.1 - ANTI-VIBRATION KIT
•
Kit includes:
-
1 set of 4 anti-vibration plates, thickness 25 mm - code
70600035.
- 1 set of 2 flexible hoses: length 1.5 m, Ø 1" 1/2 - code 70600034.
• IMPORTANT:
Use monopropylene glycol; a minimum rate of 15% to 20% is needed to avoid any risk of corrosion.
PRINCIPLE OF USING THE CURVES
A- Choose the percentage of glycol according to the
minimum temperature to protect the hydraulic circuit
against frost.
B - Example:
Protection at an external temperature of -15
°C, which
gives 30% monopropylene glycol (freezing points
curve).
The loss of capacity is given on the "Reduction of
cooling capacity" curve (0.94).
The new flow is given by the coefficient on the water
flow curve (1.1
13).
Likewise, to determine the new pressure drop
coef
ficient in relation to the nominal flow, read the
pressure drop curve (1.19).
Valid curves for setting temperature at the water
inlet.
1.30
1.20
1.10
1.00
0.94
0 10 20 30 40
0
-5
-10
-15
-20
-25
1.19
1.113
% Glycol in weight
Outdoor temperature °C
Correction factors
Pressure drop
Water flow
Reduction of cooling capacity
Freezing points
9
10.2 - HP AND LP PRESSURE GAUGES
• The accessory includes 1 set of 2 pressure gauges (HP and LP). Two per apparatus must be ordered.
• Code
70970007.
• These elements, mounted on the vertical members of the unit's front face, display the high and low pressure values for the
refrigeration circuit.
10.3 - REMOTE CONTROL
• Code 70250057.
• Enables reporting of the controller's display keypad functions up to a distance of 100
meters.
10.4 - SERIAL COMMUNICATIONS INTERFACE RS 485 (MODBUS
PROTOCOL)
• Code 70250056.
•
Interface module installed inside the unit's electrical box.
• MODBUS protocol. Please consult us for details concerning the protocol and addressing of data.
10.5 - 300-LITRE BUFFER TANK
• Code 70600120: model without supplementary heating with 800 W anti-freeze resistance (single-phase 230 VAC),
• Designed to be installed either underneath the unit, or separately.
For installation underneath the unit, the tank is supplied with mounting brackets and an insulated tube for connection
between the unit's water outlet and the tank's water inlet.
Composition:
5
1
2
3
4 6
70600120
without heating
1 Sheetmetal buffer tank - polyurethane insulation
2 800 W anti-freeze resistance
3 Fill valve
4 Drain valve
5 Purge
6 Safety valve (5 bar)
Galvanized steel chassis, painted RAL 7035
Mark
Water inlet (Male 1”1/2)
Water outlet (Male 1”1/2)
Anti-freeze resistance:
• Immersion heater mounted on the tank.
• Power: 800 W, single-phase 230 VAC.
• With limiting thermostat.
• The power supply and heating element control are to be done separately at the time of installation (not supplied).
2
4
6
8
10
12
14
16
0
7 8 9 10 11 12 13 14
Pressure losses in 300-litre tank:
Output m3/h
Kp
a
10
11 - "ECH" ELECTRONIC CONTROL
• Microprocessor control module, including:
-
chilled water temperature control (water inlet),
- control of operating parameters,
-
self-adapting algorithm for water volume reduction,
- circulating pump control (frost protection and anti-sticking function),
- dynamic setpoints are possible according to the outside temperature (to be activated at the time of installation by means
of special parameterization).
- anti-short cycle system,
- hour counter compressor and circulating pump,
- alarm management,
- anti-freeze security (temperature probes at water exchanger outlet),
- digital display of:
.
water temperature,
. set-point,
.
alarm code (HP, LP, water output, probes, anti-freeze...).
- remote alarm reporting is possible via a potential-free contact,
-
integrated condensation pressure control (with pressure sensors),
- remote control with display unit (accessory),
- serial communications port (RS 485 interface, accessory) - MODBUS Protocol.
12 - INSTALLATION INFORMATION
• See details in the installation manual.
12.1 - INSTALLATION
• Protection index of the unit:
- IP 24 : for the electrical equipment,
(IPXXB : for the mechanical hazards).
• Before installation, verify the following points:
- the unit must be installed outside in an appropriate location and in compliance with environmental requirements (sound
level, integration, etc...),
- the water chiller’s installation location must be perfectly level and strong enough to support the weight of the unit and
must have adequate inundation protection,
- sufficient space around the unit should be provided in order to facilitate servicing and maintenance operations,
- air suction to the coil and fan discharge must not be obstructed,
- install the unit above the region’s average snowfall level,
- vibrations and noise must not be transmitted to adjacent buildings,
- install the machine on anti-vibration pads and fit hoses on piping elements, as required,
-
if necessary, consult an acoustics specialist concerning the unit’s optimum location,
-
4 holes Ø 22.5 enable to place hoisting hooks and lift the unit.
12.2 - ELECTRICAL CONNECTIONS
•
All required information is indicated on the electrical diagram provided with the unit and in the installation manual.
• Connections are to be made in compliance with the standard code of practice and as per the standards in force at the site
of installation.
12.3 - HYDRAULIC CONNECTIONS
• The hydraulic connections are to be made in compliance with the standard code of practice.
•
IMPERA
TIVE:
Install the filter supplied on the water inlet of the unit.
12.4 - STARTING - MAINTENANCE
•
Refer to the installation guide and the maintenance manual.
•
IMPORT
ANT
:
-
The unit's electronic control features a frost protection device that automatically starts the water circulating pump
depending on the outside temperature (adjustable threshold), even if the unit is turned off.
- In the event the unit may be taken out of service or in the case of a high risk of freezing:
- either drain the installation,
-
or add glycol to the circuit.
- Tank anti-freeze resistance:
its electrical power supply and control must be separate from those of the unit.
11
Due to our policy of continuous development, our products are liable to
modification without notice.
R.D. 28 Reyrieux BP
131 01601 Trévoux CEDEX France
Phone 33 4 74 00 92 92 - Fax 33 4 74 00 42 00
R.C.S. Bourg-en-Bresse B 759 200 728
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