Table of Contents
Advertisement
Wall Mounted 0121...0661
Monobloc Wall Mounted Unit - WMA/WMF 0121-0181-0251-0281-0331-0551-0661 - Rev. 2.0. - Date: 18-07-2000 EN
OUTDOOR MONOBLOC AIR CONDITIONING
UNIT FOR INSTALLATION ON SHELTERS
AND PRE-FABRICATED BUILDINGS
WMA/WMF
0121- 0181 - 0251 - 0281 - 0331
0551 - 0661
OPERATION AND MAINTENANCE MANUAL
OPERATION AND
MAINTENANCE MANUAL
GB
© UNIFLAIR 2000
1 (32)
Advertisement
Table of Contents
Related Manuals for Uniflair WMA 0121
Summary of Contents for Uniflair WMA 0121
- Page 1 UNIT FOR INSTALLATION ON SHELTERS AND PRE-FABRICATED BUILDINGS WMA/WMF 0121- 0181 - 0251 - 0281 - 0331 0551 - 0661 OPERATION AND MAINTENANCE MANUAL © UNIFLAIR 2000 1 (32) Monobloc Wall Mounted Unit - WMA/WMF 0121-0181-0251-0281-0331-0551-0661 - Rev. 2.0. - Date: 18-07-2000 EN...
-
Page 2: Wall Mounted
Follow all instructions and safety procedures contained in this manual and displayed on the unit Some characteristics of special versions of these units may differ from those described in this manual. UNIFLAIR ITALIA S.r.l. Via dell’Industria, 10 35020 BRUGINE (Padova) Italy Tel. +39 (0)49 9713211 Fax. -
Page 3: Table Of Contents
OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 Contents Page GENERAL DESCRIPTION Documentation enclosed with the unit Description of the unit and intended use Function limits Description of main components Accessories Function principles Free-cooling system Data plate START-UP AND TESTING Start-up procedure FUNCTION &... -
Page 4: General Description
• Phase sequence relay on units with 400V/3N/50Hz power supply (models 0331 to 0661). PERSONAL SAFETY The design and wiring of Uniflair air conditioning units conform to 73/23/CEE. The electrical panels are equipped with an auxiliary 24V circuit and include individual short circuit protection using automatic circuit breakers. The axial fans are protected by metal grilles. -
Page 5: Function Limits
OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 FUNCTION LIMITS T room air Only if the condenser is fitted with the RVC/e speed regulator T i = 40 °C T i = 35 °C T i = 19 °C T outside air T e = 18 °C T e = 45 °C T e = 47 °C... -
Page 6: Accessories
OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 ACCESSORIES The following optional accessories can be added to the basic version of the unit: RVC/e: condenser fan speed regulation with SPC pressure sensor USER TERMINAL for the setting and display of unit function parameters; to special order the terminal can be housed inside the unit’s electrical panel on a hinged plate or a wall fitting kit can be supplied for remote installation CLOCK CIRCUIT for the management of time and date events LAN BOARD for the local network connection of two units... -
Page 7: Function Principles
OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 FUNCTION PRINCIPLES (basic version – mechanical cooling) Air from the room is taken in by the recirculating fan through opening (I), cooled by the evaporator coil and delivered into the room through opening (M). - Page 8 OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 MINIMUM QUANTITY OF FRESH AIR It is possible to pre-set a minimum opening position on the damper to allow the introduction of a proportion of fresh air in any operating mode. Q.E. MODELS WMF 0121-0181-0251-0281-0331 Fig.
-
Page 9: Free-Cooling System
OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 INTELLIGENT FREE-COOLING This system gives dynamic control of the free-cooling phase, maximising energy-saving performance at all times. The result is the ability to provide much greater energy saving (and therefore economy of operation) than the common fixed-point free-cooling systems. -
Page 10: Data Plate
OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 DATA PLATE The data plate is in the electrical panel housing and shows: - Unit model and serial number - Power supply (voltage, number of phases and frequency) - Power absorption of the unit and of the main components - Current absorption of the unit and of the main components: (Operating current) FLA (Full load current) -
Page 11: Start-Up And Testing
CISE 131 - V2R (UNIFLAIR code MERE070X1A) CISE 131 - V2 (UNIFLAIR code MERE072X1A) Check that the two orange mains power LEDs and the green Sequence LED on the RSF relay are on. -
Page 12: Function & Regulation
OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 FUNCTION AND REGULATION MICROPROCESSOR CONTROL (see mP20 microprocessor control instruction manual) The control board provides the following functions: • Control of room temperature • Display of room relative humidity (with optional temperature and humidity sensor) •... -
Page 13: Measurement And Alarm Devices
OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 MEASUREMENT AND ALARM DEVICES The safety and regulation functions of the unit are performed by the microprocessor control. The unit is equipped with the following temperature, humidity and pressure sensors, as shown in the figure below: RVC/e. -
Page 14: Regulation Of Condensation Pressure
OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 RVC/e BACK OF UNIT Fig. 5.b. MODELS WM* 0551-0661 REGULATION OF CONDENSATION PRESSURE Standard units are fitted with an On/Off pressostat. As an alternative, condensation pressure can be controlled by a TRIAC voltage regulator on the condenser fan power supply. -
Page 15: Setting The Regulation And Safety Devices
OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 Some special units can be fitted with an RVC/p pressostatic speed regulator which is not controlled by the microprocessor. Maximum speed: 100% RVC/p PROPORTIONAL BAND COND p. MIN (default: 17bar) p. MAX (default: 21bar) SETTING THE REGULATION AND SAFETY DEVICES After starting the unit make the following settings:... -
Page 16: Setting The Airflow Sensor
OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 SETTING THE AIRFLOW SENSOR The FS differential pressostat should intervene if the fan is not working (if the unit has one fan only) or if one of the fans is not working (in the case of multiple fans). The setting of the airflow differential pressostat is 1.0 mbar (100 Pa). -
Page 17: Technical Data
OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 TECHNICAL DATA GENERAL CHARACTERISTICS This information refers to standard models and may vary for special or modified units. MODELLO 0121 0181 0251 0281 0331 MODEL POTENZA FRIGORIFERA- R22 COOLING CAPACITY- R22 Raffreddamento Meccanico Mechanical cooling Ambiente: 26 °C, 40%UR;T =35°C... - Page 18 OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 MODELLO WMF0551 WMF0661 MODEL POTENZA FRIGORIFERA – R22 COOLING CAPACITY – R22 Raffreddamento Meccanico Mechanical cooling Ambiente a 26 °C- 40%UR- Room at 26 °C- 40%RH- T =35°C =35°C Resa frigorifera totale 15.8 17.5 Total cooling capacity Resa frigorifera sensibile...
- Page 19 OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 AIR FLOW RECIRCULATION ( MODEL WM∗ ∗ ∗ ∗ 0121 WM∗ ∗ ∗ ∗ 0181 WM∗ ∗ ∗ ∗ 0251 WM∗ ∗ ∗ ∗ 0281 WM∗ ∗ ∗ ∗ 0331 Nominal air flow @ 0 Pa m³/h 1240 1460...
-
Page 20: Electrical Characteristics
OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 ELECTRICAL CHARACTERISTICS COMPONENTI DELL’UNITÁ UNIT COMPONENTS COMPRESSORE VENTILATORI sez. RICIRCOLO COMPRESSOR RADIAL FANS 50 Hz VOLT VOLT WM∗ ∗ ∗ ∗ 0121 230/1ph/50 0.94 230/1ph/50 0,13 0,67 1,45 WM∗ ∗ ∗ ∗ 0181 230/1ph/50 1.53 11,4... -
Page 21: Maintenance
OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 MAINTENANCE REGULAR CHECKS The following maintenance operations should be done regularly: • check the set values of the control and regulation devices • check that room conditions on the mP20/W terminal display are normal •... - Page 22 OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 CLEANING THE FRESH AIR PRE-FILTRER (only in units with free-cooling option) To ensure sufficient flow of fresh air the metal pre-filter on the front air intake must be cleaned regularly, especially during the cooler seasons when free-cooling is used more often.
-
Page 23: Changing The Electrical Heating Element
OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 CHANGING THE ELECTRIC HEATING ELEMENTS (models WM* 0551-0661) The heater elements are in front of the MVE radial fan: for access, remove the top front panel of the unit and the safety cover. IMPORTANT: before working on the electric heating element, switch off the power supply by moving the main switch to the OFF position (O) and wait for the element to cool. - Page 24 OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 The charge must be done under room conditions and with a discharge pressure of around 18 bar (equivalent to a saturation temperature of 48°C for R22). Check that the super-cooling of the liquid at the intake of the thermostatic valve is between 3 and 5°C less than the condensation temperature reading on the manometer scale and that the superheating of the vapour at the evaporator output is around 5-8°C.
-
Page 25: Problem Solving
OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 PROBLEM SOLVING Identifying and solving problems is made easier by the microprocessor control which, in the event of an alarm: • activates the alarm relay as well as the red LED and buzzer on the user terminal •... -
Page 26: Temperature Control
OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 TEMPERATURE CONTROL PROBLEM POSSIBLE CAUSE CHECK / REMEDY ROOM TEMPERATURE TOO HIGH The parameter settings on the control Check the room temperature setting; see panel are not correct control panel instruction manual. (high room temperature alarm) Lack of air flow. -
Page 27: Fans
OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 FANS PROBLEM POSSIBLE CAUSE CHECK / REMEDY LACK OF AIRFLOW A) No power to the fans Check power supply to the fan motors B) The filters are dirty Shake dust out of the cartridge and clean with a vacuum cleaner. - Page 28 OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 REFRIGERANT CIRCUIT PROBLEM POSSIBLE CAUSE CHECK/REMEDY HIGH COMPRESSOR INTAKE A) Heat Load greater than expected. Check the consistency of the room thermal load; PRESSURE check, in the presence of strong dehumidification, the airflow and the external conditions; check the amount of outside air draw.
-
Page 29: Compressors
OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 COMPRESSOR PROBLEM POSSIBLE CAUSE CHECK/REMEDY THE COMPRESSOR DOES NOT WORK A) Protection device against short circuit is Restore the magnetic switch lever; check cause of switched on. the short circuit. Before restarting the compressor check the. -
Page 30: Free Cooling
OPERATION AND MAINTENANCE MANUAL Wall Mounted 0121…0661 FREE COOLING SYSTEM PROBLEM POSSIBLE CAUSE CHECK/REMEDY FREE-COOLING CYCLE DOES NOT A) The servomotor damper doesn’t work. Check the electrical of the and if it is necessary to START replace or repare the motor. B) Control system setting is not correct.