Alfa Electric AVE400.432 User manual

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UMA-CDZ-AVE400.432-00
USER’S MANUAL (PART 2)
AIR CONDITIONER FOR ELECTRICAL ENCLOSURES
OUTDOOR APPLICATION
AVE400.432
Division of:
ALFAPLASTIC s.a.s.
Via Della Valle, 39 – 20841 Carate Brianza (MB) Italy
Tel. [phone] Fax. [phone]
Mail: [e-mail]
www.alfaelectric.com
Document: UMA-CDZ-AVE400.432-00 Date Name
Description
Original user’s manual for air conditioner AVE400 series
Language: English
ISSUE 20/07/2022 Ascheri M.
REV. 01
REV. 02
REV. 03

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UMA-CDZ-AVE400.432-00

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TABLE OF CONTENTS
1 - TECHNICAL DATA ................................................................................................................... 4
2 - INSTALLATION ....................................................................................................................... 5
2.1 PRODUCT HANDLING .................................................................................................... 5
2.2 GENERAL CHECKS BEFORE INSTALLATION ..................................................................... 5
2.3 FITTING ........................................................................................................................ 6
3 - ELECTRICAL CONNECTION ...................................................................................................... 8
3.1 WIRING DIAGRAM ........................................................................................................ 8
3.2 ELECTRICAL INSTALLATION ........................................................................................... 9
3.3 ALARM OUTPUT / DIGITAL INPUT ............................................................................... 11
4 – STARTING AND ADJUSTMENT ............................................................................................. 11
4.1 GENERAL DESCRIPTION ............................................................................................... 11
4.2 DIGITAL THERMOSTAT INSTRUCTION .......................................................................... 12
5 – SPARE PARTS LIST ............................................................................................................... 17
WARRANTY .............................................................................................................................. 18
UE DECLARATION OF CONFORMITY .......................................................................................... 19

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UMA-CDZ-AVE400.432-00
1
-
TECHNICAL
DATA
CONTROL TYPE ARTICLE CODE
Digital thermostat with alarms AVE400.432
FEATURES Unit
Power supply V | ph| Hz 400 | 3 | 50 / 460 | 3 | 60
Cooling capacity EN14511 A35-A35 W 3800/3980
A35-A50 W 2800/3160
Absorbed electric
power EN14511
A35-A35 W 2200/2320
A35-A50 W 2600/2750
Rated current A 2.7 / 3.0
Motor circuit breaker / Delayed pre fuse
(advised) A 16
Electrical connection - connector
Air flow rate (free blow) enclosure m3/h 860/950
Operating temperature ambient °C (°F) +5 |+55 (+41|+ 131) / +5 |+50 (+41|+ 122)
enclosure °C (°F) +20 |+45 (+68/+ 113)
Refrigerant - | g R134a | 1000
Protection degree EN60529/1
ambient - IP34
enclosure - IP54 (when installed on enclosure with the same
protection degree)
Design
casing - Galvanised sheet steel
cover - Galvanised sheet steel powder coated RAL7035
- Stainless steel AISI304 for version with code ending 0X
Weight kg 76
Conformity / Certifications - CE
WARNING
 Safety of AIR CONDITIONER is warranted only by proper use of these instruction which must be kept.
 Installation must be done by qualified personnel only after enclosure power supply disconnecting.
 Before any operation, switch off the power supply.
 The appliance is classified as not accessible to the general public
 The air conditioner is not to be used by persons (including children) with reduced physical, sensory or mental capabilities,
or lack of experience and knowledge, unless they have been given supervision or instruction.
 Children being supervised not to play with the air conditioner.
 The air conditioner must be installed in accordance with national wiring regulations
 Upstream of the electrical connection, an efficient disconnection system must be provided in compliance with the
standard
 Internal and external components of electrical enclosure don’t have to affect the proper installation of air conditioner.
 Inside of electrical enclosure there must not be components that could affect the proper ventilation.
 Provide a proper fixing of the electrical enclosure to the floor to prevent accidental tipping due to the supplementary
weight of installed AIR CONDITIONER.
 Installation position of AIR CONDITIONER must be selected to ensure good ventilation. Take care that any internal/external
components of enclosure don’t obstruct air passage. (see section 2.2 GENERAL CHECKS BEFORE INSTALLATION)
 The heat loss of the components installed inside of the electrical enclosure must be lower than useful cooling power of the
AIR CONDITIONER.
 AIR CONDITIONER must be handled in upright position and protected against accidental tipping over.
 Do not modify the AIR CONDITIONER structure if it is not specified in these instruction or associated instructions.
 During transportation of enclosures with installed air conditioner a proper bracket must be used to support the cooling
unit weight.
 Install only original spare parts and accessories.
 Protection against access to live parts must be warranty by installer.
 The supply connector of the AIR CONDITIONER must only be connected and disconnected when electrical enclosure is
electrically disconnected.
 Follow all technical data shown in this manual

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2
-
INSTALLATION
2.1 PRODUCT HANDLING
AIR CONDITIONER AVE series must be handled in upright
position and protected against accidental tipping over.
Air conditioners AVE400 series is fitted with female blind threaded insert to screw male
lifting eye bolts. (included)
The air conditioner handling, when unpacked, can be done thanks to lifting eye bolt.
If lifting eye bolts are not included, please provide an adequate M6 male lifting eye bolt (2)
and screw it inside blind threaded (1) insert placed on top of the air conditioner
Check the proper fixing of eye bolts before lift the air conditioner.
2.2 GENERAL CHECKS BEFORE INSTALLATION
Before the installation make sure that the cabinet is disconnected from the
electrical supply.
GENERAL CHECKS
-
electrical enclosure must be disconnected
form powe
r
supply
- electrical data shown on rating label pasted on air conditioner side must be
guaranteed
- Electrical enclosure must be sized according to air conditioner dimensions and
weight
.
-
Electrical
enclosure must have at least IP54 protection degree
- Internal and external components of electrical enclosure don’t have to affect the
proper
installation
of
air condition
er
- The installation site must be free from excessive dirt, aggressive ambient
conditions and moisture.
-
The installation site must be free from
hot air
flows
-
The
internal side of
e
lectrical enclosure must b
e
free from
dirt
and moisture
- The environment temperature must be within the range specified on label pasted
on
air
c
onditioner side
- Inside of electrical enclosure there must not be components that could affect the
proper ventil
ation
- the enclosure positioning with installed air conditioner must be carefully selected to
ensure good ventilation (clearance between the air conditioner and the near walls
must be at least 500 mm in each side).
-
P
r
oper
disposing of condensate discharge

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2.3 FITTING
1) Make the fixing hole on the enclosure as is shown in the drilling template
Deburr all sharp edges to avoid accidental injuries

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2) Lift the air conditioner by lifting eyebolt and place it near the enclosure wall
3) Mount the air conditioner on the electrical cabinet according to the drilling
template with M6X16 screws and washers against unscrewing (included in
mounting kit)
4) Connect the condensate drain pipe as is shown in picture below.
Air conditioner is fitted with condensate evaporator. Condensate is collected into a
vessel and it is warmed by the hot discharge compressor pipe. If condensate rises
over a certain level, it is evacuated by over flow pipe
Air conditioner produces condensate because the moist air inside of the
enclosure meets cold heat exchanger (evaporator) and then it becomes water;
water production decreases during air conditioner working because
enclosure air becomes dry.
The enclosure must be IP 54 protected, if enclosure is not airtight, condensate
production could increase.
The enclosure IP54 degree is guaranteed only if the air conditioner is proper
mounted.

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3
-
ELECTRICAL
CONNECTION
3.1 WIRING DIAGRAM

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3.2 ELECTRICAL INSTALLATION
The electrical installation must be carried out by a qualified electrician who
is responsible for compliance with the applicable standards and
regulations.
Electrical data shown on rating label pasted on air conditioner side must be
guaranteed
Install the delayed fuse recommended on rating plate pasted on air
conditioner side to protect the line and enclosure components against short-
circuit.
Upstream of the electrical connection, an efficient disconnection system must
be provided and it must be clearly identified
Air conditioner is already fitted with a temperature controller, no additional
temperature control must be connected upstream of the unit.
Air conditioner is factory wired for 460VAC input voltage, if
needed it can be changed at 400VAC. Select the proper wiring
according to mains voltage where unit is installed.
Input voltage selection can be carried out by male connector
proper wiring. Supply male connector is included in mounting
kit and it is factory wired as is shown in picture below.
 Bridge from blank pole to pole 6 means input voltage set at 460VAC
 In case of mains voltage at 400VAC the bridge must be shifted from
pole 6 to pole 4
 After supply voltage selection, male connector can be wired with
main cable.
Before the installation make sure that the cabinet is
disconnected from the electrical supply.
Wire male plug with an adequate cable as is shown by picture, phases order
shown on male connector must be kept
Cable section must be at least 1,5mm2

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The male plug is fitted with spring terminals:
1.1) Push the spring with a screwdriver
and then insert the wire.
1.2) Check the proper wire insertion.
1.3) Insert male connector inside of 7
poles female connector placed on
the back of the air conditioner.
When air conditioner is installed
on electrical enclosure, female
connector is accessible only from
inside the enclosure.
1.4) Insert signal connector (included in installation
kit, refer to picture below) inside of 4 poles
female connector placed on the back of the air
conditioner.

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3.3 ALARM OUTPUT / DIGITAL INPUT
Air conditioner is fitted with an electronic controller which permits alarm
output and digital input signals.
3.3.1 Alarm output
Alarm output is activated according to alarm parameters (for
example in case of enclosure temperature higher than ALU
value, digital input not activated… See PARAMETERS at 4.2
DIGITAL THERMOSTAT INSTRUCTION section)
Alarm output is a dry contact.
3.3.2 Digital input
WARNING: proper functions of air conditioner are allowed
only if digital input is activated. (closed contact between
poles 13-14).
Digital input can be a door limit switch or a generic external dry contact.
Plug for signals is factory wired with a bridge between 13-14
poles. Bridge can be removed to wire, for example, a door limit
switch.
Connect signal plug with signal female connector placed on the back of
the air conditioner, near of power supply connector.
4
–
STARTING AND ADJUSTMENT
4.1 GENERAL DESCRIPTION
ALFA ELECTRIC air conditioners are especially designed for dissipation of
heat loss inside electrical enclosures with IP54 protection degree.
Air circulation inside the enclosures allows to keep enclosure air volume
isolated from external ambient air, it preserves the inside of the enclosure
against dirt and humidity which are present in the external air.
AVC series must be installed only on the wall of electrical
enclosure
After air conditioner assembly, wait approx. 30 min. before
starting it (the oil must collect in the compressor to ensure
lubrication and cooling).

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The air conditioner operates automatically, that is to say, after insertion, the
evaporator fan operates continuously making the air inside the cabinet
circulate. This way a uniform distribution of temperature inside the cabinet
itself is attained. The built-in thermostat drives compressor and condenser fan
according to set point value and other parameters (See PARAMETERS at 4.2
DIGITAL THERMOSTAT INSTRUCTION section for references)
Compressor and condenser fan start after a delay set on thermostat (see
parameter AC on parameters list for references) to permit a minimum interval
between the compressor stop and the following restart.
During proper operations, the compressor and condenser fan
turn OFF when internal enclosure temperature decreases under
set point value.
4.2 DIGITAL THERMOSTAT INSTRUCTION
WARNING: the air conditioner is designed to operate at 35 ° C
cabinet temperature. If the set point is changed the performance
of the unit will vary.
1) Regulating thermostat is fixed on side of air conditioner.
2) Thermostat could be set into a range from 20°C up to 50°C. Follow
thermostat instructions for parameter changing.
To display target set point; in programming mode it selects a parameter or confirm an operation.
(DEF) To start a manual defrost
To see the max. stored temperature; in programming mode it browses the parameter codes or
increases the displayed value.
To see the min stored temperature; in programming mode it browses the
parameter codes or decreases the displayed value.
To switch the instrument off, if onF = oFF.
To switch the light, if oA1 = Lig

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4.2.1 KEY COMBINATIONS:
To lock & unlock the keyboard.
To enter in programming mode
To return to the room temperature display
4.2.2 LED FUNCTION DESCRIPTION:
4.2.3 MAX & MIN TEMPERATURE MEMORIZATION
How to see the min temperature
1. Press and release the ▼ key.
2. The “Lo” message will be displayed followed by the minimum temperature recorded.
3. By pressing the ▼ key again or by waiting 5s the normal display will be restored.
How to see the max temperature
1. Press and release the ▲ key.
2. The “Hi” message will be displayed followed by the maximum temperature recorded.
3. By pressing the ▼ key again or by waiting 5s the normal display will be restored.
How to reset the max and min temperature recorded
1. Hold press the SET key for more than 3s, while the max. or min temperature is
displayed. (rSt message will be displayed)
2. To confirm the operation the “rSt” message starts blinking and the normal temperature
will be displayed.
4.2.4 HOW TO SEE THE SET POINT
1. Push and immediately release the SET key: the display will show the Set point value;
2. Push and immediately release the SET key or wait for 5 seconds to display the probe
value again.
4.2.5 HOW TO CHANGE THE SETPOINT
1. Push the SET key for more than 2 seconds to change the Set point value;
2. The value of the set point will be displayed and the “°C” or “°F” LED starts blinking;
3. To change the Set value push the ▲ or ▼ arrows within 10s.

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4. To memorise the new set point value push the SET key again or wait 10s.
4.2.6 HOW TO CHANGE A PARAMETER VALUE
To change the parameter’s value operate as follows:
1. Enter the Programming mode by pressing the SET + ▼ keys for 3s (the “°C” or “°F”
LED starts blinking).
2. Select the required parameter. Press the SET key to display its value
3. Use ▲ or ▼ to change its value.
4. Press SET to store the new value and move to the following parameter.
To exit: Press SET + ▲ or wait 15s without pressing a key.
NOTE: the set value is stored even when the procedure is exited by waiting the time-out to
expire.
4.2.7 HOW TO LOCK THE KEYBOARD
1. Keep pressed for more than 3 s the ▲ + ▼ keys.
2. The POF message will be displayed and the keyboard will be locked. At this point it will
be possible only to see the set point or the MAX o Min temperature stored
3. If a key is pressed more than 3s the POF message will be displayed.
4.2.8 HOW TO UNLOCK THE KEYBOARD
Keep pressed together for more than 3s the ▲ + ▼ keys, till the Pon message will be
displayed.
4.2.9 THE ON/OFF FUNCTION
With onF = oFF, pushing the ON/OFF key, the instrument is switched off. The
OFF message is displayed. In this configuration, the regulation is disabled.
To switch the instrument on, push again the ON/OFF key.
WARNING: Loads connected to the normally closed contacts of the relays are always
supplied and under voltage, even if the instrument is in standby mode.
4.2.10 PARAMETERS
Regulation
Hy Differential: (0,1 ÷ 25,5°C / 1÷255 °F) Intervention differential for set point.
Compressor
Cut IN is Set Point + differential (Hy). Compressor Cut OUT is when the
temperature reaches the set point.
Ot Thermostat probe calibration: (-12.0÷12.0°C; -120÷120°F) allows to adjust
possible offset of the thermostat probe.
AC Anti-short cycle delay: (0÷50 min) minimum interval between the compressor stop
and the following restart.
CH Type of action: CL = cooling; Ht = heating.
rES Resolution (for °C): (in = 1°C; dE = 0.1 °C) allows decimal point display.
dLy Display delay: (0 ÷20.0m; risul. 10s) when the temperature increases, the
display is updated of 1 °C/1°F after this time.
IdF Interval between defrost cycles: (0÷120h) Determines the time interval between
the beginning of two defrost cycles.

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MdF (Maximum) length for defrost: (0÷255min) (0=no defrost) When P2P = n, (not
evaporator probe: timed defrost) it sets the defrost duration, when P2P = y (defrost
end based on temperature) it sets the maximum length for defrost.
ALU MAXIMUM temperature alarm: (SET÷110°C; SET÷230°F) when this temperature
is reached the alarm is enabled, after the “ALd” delay time.
ALL Minimum temperature alarm: (-50.0 ÷ SET°C; -58÷230°F when this temperature is
reached the alarm is enabled, after the “ALd” delay time.
i1P Digital input polarity: oP: the digital input is activated by opening the contact; CL:
the digital input is activated by closing the contact.
i1F Digital input configuration: EAL = external alarm: “EA” message is displayed;
bAL = serious alarm “CA” message is displayed. PAL = pressure switch alarm, “CA”
message is displayed; dor = door switch function; dEF = activation of a defrost
cycle; AUS =to switch on the second relay if oA1 = AUS; Htr = kind of action
inversion (cooling –heating); FAn = not set it; ES = Energy saving.
did (0 ÷ 255 min) with i1F= EAL or i1F = bAL digital input alarm delay: delay between
the
detection of the external alarm condition and its signalling.
with i1F= dor: door open signalling delay
with i1F = PAL: time for pressure switch function: time interval to calculate the
number of the pressure switch activation.
PbC Type of probe: it allows to set the kind of probe used by the instrument: PbC =
PBC probe, ntc = NTC probe.
dP3 Third probe display- no available
.dP4 Fourth probe display- no available
4.2.11 DIGITAL INPUT (ENABLED WITH P3P = N)
The free voltage digital input is programmable in different configurations by the “i1F”
parameter.
Door switch input (i1f = dor)
It signals the door status and the corresponding relay output status through the odc
parameter:
no= normal (any change);, Fan= fan OFF; CPr= Compressor OFF, F_C= Compressor and
fan OFF.
Since the door is opened, after the delay time set through parameter did, the door alarm is
enabled, the display shows the message dA and the regulation restarts is rtr = yES. The
alarm stops as soon as the external digital input is disabled again. With the door open, the
high and low temperature alarms are disabled.
Digital inputs polarity
The digital input polarity depends on the i1P parameter.
i1P=CL: the input is activated by closing the contact.
i1P=OP: the input is activated by opening the contact
4.2.12 GENERIC ALARM (i1F = EAL)
As soon as the alarm input is activated (for example enclosure temperature higher than
ALU value) the unit will wait for did time delay before signalling the EAL alarm message.
The outputs status doesn’t change. The alarm stops just after the alarm input is de-
activated.

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4.3.13 SERIOUS ALARM MODE (i1F = bAL)
When the alarm input is activated (for example enclosure temperature higher than ALU
value), the unit will wait for did delay before signalling the CA alarm message. The relay
outputs are switched OFF. The alarm will stop as soon as the alarm input is de-activated.
4.2.14 ALARM SIGNALS
4.2.15 DEFAULT SETTING VALUES
Label Name Range °C/°F
Set Set point LS÷US 31.0 ---
Hy Differential 0,1÷25.5°C/ 1÷ 255°F 4.0 Pr1
Ot Thermostat probe calibration -12÷12°C /-120÷120°F 0.0 Pr1
AC Anti-short cycle delay 0 ÷ 50 min 3 Pr1
CH Kind of action CL=cooling; Ht= heating cL Pr1
rES Resolution in=integer; dE= dec.point dE Pr1
IdF Interval between defrost cycles 1 ÷ 120 hours 8 Pr1
MdF (Maximum) length for defrost 0 ÷ 255 min 0 Pr1
ALU MAXIMUM temperature alarm Set÷ 110.0°C; Set÷230°F 50.0 Pr1
ALL Minimum temperature alarm -50.0°C÷Set/ -58°F÷Set -50.0 Pr1
i1P Digital input polarity oP=opening;CL=closing oP Pr1
i1F Digital input configuration EAL, bAL, PAL, dor; dEF; Htr, AUS dor Pr1
did Digital input alarm delay 0÷255min 0 Pr1
PbC Kind of probe Ptc; ntc ntc Pr1
dP3 Third probe display -- noP Pr1
dP4 Fourth probe display -- noP Pr1

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5
–
S
PARE
PARTS LIST
REFERRED TO WIRING
DIAGRAM
DESCRIPTION CODE
1 Evaporator fan VCENT220D230V
2 Compressor NJ6226ZX
3 Condenser fan VCENT250D230V
4 Regulating thermostat TERMDIG1S1D2R
5 Anti-ice safety thermostat TERM.ALL.COND
7 Compressor contactor CONTAT9A3P
C1 Evaporator fan capacitor CON2UFS2M8F
C3 Condenser fan capacitor CON5UFS2M8F
Supply connector (male plug) SPINALIM7
Signal connector (male plug) SPIN-SEGN4
Pv Pressure switch PRSWO7-C10

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WARRANTY
WE
Alfa Electric
Division of:
ALFA PLASTIC s.a.s.
Via Della Valle, 39 – 20048 CARATE BRIANZA (MI)
Tel. [phone] – Fax [phone]
Mail: [e-mail]
www.alfaelectric.com
guarantees that the product is free from any quality defects.
The product is guaranteed for a period of 12 months from the date of delivery, provided it
operates under the following conditions:
1. value of power supply indicated in the data plate is completely respected;
2. requirements specified on user’s manual are completely respected;
3. cabinet temperature is not higher or lower than its rated temperature;
4. ambient temperature is not higher or lower than its rated temperature;
5. the product is mounted on cabinets with a minimum IP54 protection level;
6. the product is mounted on cabinets that not requiring higher cooling power than
expected;
7. the product is clearly identifiable by serial number.
The warranty does not apply if :
1. the cooling circuit has been modified about type and quantity of refrigerant or
composition;
2. the unit operates in acid or corrosive ambient;
3. the unit has been modified without ALFAPLASTIC consent.
This warranty shall become null as soon as the product is altered or modified in its
structure or in circuits.
The terms of this warranty (commencement and termination dates) are not modified by
any repair or replacement of products.
For every part that results defective during the period of this warranty, ALFAPLASTIC shall
repair or replace it. Any others charges arising from removal, handling and installation of
the products shall not be refunded by ALFAPLASTIC.
Like is specified on user’s manual, installation, handling, the correct earthing in
accordance with all current standards are under the responsibility of costumer.
In the event of any damage caused by a defective product shall apply the EEC85.374
standard.
The malfunction must be communicated in writing to ALFAPLASTIC.
Warranty is void if the costumer is not in good standing with the payments
LEGAL RAPRESENTATIVE
FIORATTI P.

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UE DECLARATION OF CONFORMITY
WE
Alfa Electric
Division of:
ALFA PLASTIC s.a.s.
Via Della Valle, 39 – 20841 CARATE BRIANZA (MB)
Tel. [phone] – Fax [phone]
Mail: [e-mail]
www.alfaelectric.com
DECLARE THAT THE AIR CONDITIONER FOR ELECTRICAL CABINETS
AVC, AVE, ARC SERIES
DO COMPLY WITH THE FOLLOWING DIRECTIVES
2006/42/CE MACHINERY DIRECTIVE (17 May 2006)
2014/35/UE LOW VOLTAGE DIRECTIVE (26 February 2014)
2014/30/UE EMC DIRECTIVE (26 February 2014)
2011/65/UE ROHS DIRECTIVE (8 June 2011)
STANDARDS APPLIED TO MEET THE PRINCIPAL ELEMENTS OF THE DIRECTIVE
EN 60335-2-40:2003; A1; A2 (IEC 60335-2-40: 2002; A1; A2)
EN 60335-1: 2010; A11; A13; A14; A1; A2 (IEC 60335-1; A1; A2)
OTHER STANDARDS APPLIED
EN 55014-1: 2017
EN 55014-2: 2015
EN IEC 61000-3-2: 2019
EN 61000-3-3: 2013
LEGAL RAPRESENTATIVE
FIORATTI P.
Form: No 1_1 Date Name
Description
Declaration of Conformity for air conditioner AVC,AVE, ARC
ISSUE 01/06/2020 Ascheri M.
REV. 1
REV. 2
REV. 3