Thermocold MEX VS 15 RH Manual
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Thermocold MEX VS 15 RH Manual

Controller manual for chillers and inverter air/water heat pumps with axial fans
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MANUALE DEL CONTROLLO
MEX VS 15 RH / MEX VS 16 RH
MEX VS 18
MEX VS 19
MEX
VS
/MEX
VS
MEX
VS
/ MEX VS
Cod.
MCO14124H7800-02
CONTROLLER MANUAL
MEX VS 15 RH / MEX VS 16 RH
MEX VS 18 RH / MEX VS 19 RH
MEX VS 112 RH /MEX VS 112T RH
MEX VS 115 RH / MEX VS 115T RH
Cod. MCO14124H7820-02
Questo manuale è stato creato per scopo informativo. La ditta declina ogni responsabilità per i risultati di una progettazione o di una installazione basata sulle spiegazioni e le specifiche
tecniche riportate in questo manuale. E' inoltre vietata la riproduzione anche parziale sotto qualsiasi forma dei testi e delle figure contenute in questo manuale.
CONTROLLER MANUAL FOR CHILLERS AND
INVERTER AIR/WATER HEAT PUMPS WITH
AXIAL FANS
Manuale in lingua originale
RH
/
RH
112 RH
112T RH
115 RH
115T RH

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Summary of Contents for Thermocold MEX VS 15 RH

  • Page 1 CONTROLLER MANUAL FOR CHILLERS AND INVERTER AIR/WATER HEAT PUMPS WITH AXIAL FANS MANUALE DEL CONTROLLO MEX VS 15 RH / MEX VS 16 RH MEX VS 18 MEX VS 19 112 RH /MEX 112T RH 115 RH / MEX VS 115T RH Cod.

  • Page 2: Table Of Contents

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans INDEX CONSERVATION OF THE MANUAL ............................3 GRAPHIC SYMBOLS ................................. 3 PERMITTED USES ................................... 3 GENERAL SAFETY RULES ................................. 3 PERSONAL SAFETY EQUIPMENTS ............................3 WORKERS’...
  • Page 3 Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans 10.12 OPERATION AREA - ACTIVATION OF THE AUXILIARY ELECTRIC HEATER AND BOILER (P LANT CIRCUIT WATER TEMPERATURE SENSOR ) ....................................19 IS NOT ENABLED 10.12.1 AUXILIARY SYSTEMS OFFSET MANAGEMENT ......................

  • Page 4: Conservation Of The Manual

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans 1 CONSERVATION OF THE MANUAL The manual has to be always kept for future reference. It has to be stored in a safe place, away from dusts and moisture. It has to be also available and accessible to all users who shall consult it any time they are in doubt on how to operate the equipment.
  • Page 5 Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans  To step with your feet on the appliance, sit down and/or place any type of object.  To spray or pour water directly on the unit. ...

  • Page 6: Purposes And Contents Of The Manual

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans 4 PURPOSES AND CONTENTS OF THE MANUAL This manual provides basic information for the installation, operation and maintenance of MEX VS units. It is addressed to machine operators and it enables them to use the equipment efficiently, even if they do not have any previous specific knowledge of it.

  • Page 7: Analog Input Menu

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans Level 2 (C) = it appears if you enter the manufacturer password. Level 3 (A) = it appears only via Modbus. ANALOG INPUT MENU By entering the maintainer password in the menu of analog inputs "tP", at the level 1 of the menu structure diagram of the unit control board, you can read the values of the current probes: DESCRIPTION Measurement unit...

  • Page 8: Display

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans DISPLAY In Normal view displays the outlet water temperature reported to tenths of degrees, or the alarm code if at least an alarm is active. In case of multiple alarms activation, it will display the first alarm, while the second appears when the first is reset. Into the menu mode, the display depends on the current position where you are.

  • Page 9: Dynamic Set-Point Adjustment

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans Note: Note that with the adoption of the optional “KIE” module helps to increase the input/output (I/O) ports. For more information, please refer to the related manual of this module. 6 DYNAMIC SET-POINT ADJUSTMENT The controller can change the set-point by adding a value depending on the outdoor air temperature sensor.

  • Page 10: Circulator

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans - b20=0 when the input is at the actual set point is: set point (Coo/Hea) - b15/2. - b20=0 when the input is at 50%, the set point will be the set of (Coo/Hea) mode.

  • Page 11: Operation By Thermoregulator With Periodic Activation

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans OPERATION BY THERMOREGULATOR WITH PERIODIC ACTIVATION The function is disabled if P17= 0 (default). If the pump is set to operate by thermoregulation call (P03 = 1, default), it will be activated periodically for a time period defined by the parameter P17 (in seconds) after a counting time set by the parameter P16 (in minutes), activated when the pump is turned off for satisfied thermoregulation.

  • Page 12: Purging The System

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans In domestic hot water production mode, the pump will operate at the maximum speed. Note: If the parameter r33>0, then the circulator can start operations under call also for the activation of the plant resistance and/or sanitary mode operation, see paragraph.Errore.

  • Page 13: Fan Speed Control In Heating Mode

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans run at preset minimum fan speed. This function has the purpose to prevent the compressor startup at very high condensation temperatures. FAN SPEED CONTROL IN HEATING MODE The fan speed control in heating mode occurs depending on the diagram shown below, where: F17 = Pressure set for the minimum speed of the fan motor in heating mode F18 = Fan motor proportional band in heating mode...

  • Page 14: Sensor Memorization In Heating Mode

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans I/O Ports - Parameter Value Function 0 (default) Disenabled function Function is active in heating and cooling mode. The remote on-off function doesn’t disenable the DHW production. Function is active in heating and cooling mode.

  • Page 15: Heating Mode On Sanitary Accumulation

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans i-HWAK 4 i-HWAK 4 i-HWAK 4 i-HWAK 4 10.4 HEATING MODE ON SANITARY ACCUMULATION If the parameter H83=1, the appliance exploits the accumulation tank for sanitary hot water also to heat the plant side. In these conditions, the relay which controls the sanitary valve will be also energized during heating operation and not only in sanitary mode.

  • Page 16: Remote Functions

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans 10.5 REMOTE FUNCTIONS The terminal block provides the digital inputs to control the unit via an external consent. 10.5.1 ON/OFF The ON/OFF function is enabled by default on the digital input “ID2” (terminals: ON/OFF-ON/OFF). Remove the bridge of the terminal block then the unit will be placed in stand-by mode (in such status the display of the on-board unit controller will show the "E00"...

  • Page 17: Remote Sensor For The Water Temperature Of The Plant Circuit

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans 10.6 REMOTE SENSOR FOR THE WATER TEMPERATURE OF THE PLANT CIRCUIT In some configurations of systems (example: heat pump in parallel with a boiler on the same hydronic circuit and diverter valve of exclusion) it could be necessary to enable a plant temperature sensor to allow the on-board unit controller to correctly process the management.

  • Page 18: Electric Heater Of Sanitary Water Production

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans 10.7.3 ELECTRIC HEATER OF SANITARY WATER PRODUCTION It is an additional energy resource for the sanitary water tank heating when the compressor is not able to reach the set temperature within a reasonable time.

  • Page 19: Activation Of Auxiliary Electric Heaters And Boiler During The Joint And In Substitution Operation To The Compressor Of The Heat Pump

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans - r32 = 0: boiler without a circulating pump with thermoregulation to be performed by the heat pump unit. - r32 = 1: boiler equipped with independent circulating pump with thermoregulation to be performed by the heat pump unit. - r32 = 2: boiler without circulating pump with independent thermoregulation.

  • Page 20: In Substitution Operation

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans activated, and then will be deactivated when the measured temperature by the remote sensor is greater than setpoint Hea. The heat pump follows the activation logic described in paragraph 10.6. The boiler will be managed by the outlet temperature sensor of the heat pump if the water plant circuit remote sensor is not active.
  • Page 21 Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans TABLE 2. JOINT OPERATION, AREA 1 ORDER OF INTERVENTION OF N° HEATING SYSTEMS (when the set- MODE OPERATION point is not achieved) 1) Heat pump HEAT / Set up of 2) After r12 minutes, auxiliary...
  • Page 22 Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans 1) Boiler Set up of 2) After r15 minutes, auxiliary electric HEAT+SAN SANITARY minutes heater of sanitary 3) After r15 minutes later, heat pump 1) Boiler 2) After r15 minutes, heat pump Set up of HEAT+SAN...

  • Page 23: Auxiliary Systems Offset Management

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans The below Table (5) shows the parameter to be set in order to enable the auxiliary electric heaters in "Summer and sanitary" mode (in this case, the only available auxiliary electric heater is the one of sanitary side and the subdivision between normal/joint/substitution operation is not valid).

  • Page 24: Summer/Winter Operation Indication

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans In this way, the heat pump will stop when achieving the set-point (G02, G03, G05) and the temperature difference can be supplemented by the boiler and/or electric heaters according to the selected temperature offset. 10.13 SUMMER/WINTER OPERATION INDICATION It is possible to set a digital output in order to indicate the operating mode of the unit, plant side.

  • Page 25: Maximum Hz

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans 10.17 Maximum Hz This function is disabled by default. To activate the Maximum Hz function, you should set the parameter L02 to the value L02=1, the cooling and heating capacities will increase with 10% (depending on the heat pump model and working conditions).

  • Page 26: Humidistat Operation

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans The 3-way valve with 2 or 3 contacts for power supply connection The 3-way valve is applied to divert the water flow between floor plant and fan coil units. In the case of a 3-way valve with 2 contacts for power supply (with return spring), when the 3-way valve is not activated, the outlet of the valve that is opened must be connected to the floor plant.

  • Page 27: Humidistat Wiring

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans 10.18.6 HUMIDISTAT WIRING Carry out the following connections between the humidistat and the terminal block of the minichiller unit:  Connect POWER SUPPLY to 12V+ and 12V-. ...
  • Page 28 Admitted configuration Note Parameter Description Unit Default Range Visibility Value Description First setpoint in cooling mode °C H03÷Co2 First setpoint in heating mode °C 45.0 He2÷H01 *San Domestic water temperature Setpoint °C 48.0 H02÷H01 Second setpoint in cooling mode °C 18.0 Coo÷H03 Second setpoint in heating mode...
  • Page 29 Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans DHW auxiliary electric heater Boiler enablement Plant season signalization Plant secondary pump Input not assigned Signalization of defrost cycle in progress Auxiliary electric heater of the plant Terminals: DO4N-DO4 Alarm DO4 Undervoltage digital output...
  • Page 30 Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans Cooling and heating double setpoint Enabling heating always diverted Disabled function 0÷1 The DHW operation should be active towards the sanitary mode In heating operation always diverts towards the sanitary The alarm is not active for duration of A03 from the Bypass flow from pump activation 0÷255...
  • Page 31 Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans Maximum fan speed reduction % in Depending 0 ÷100 cooling mode on the model Maximum fan speed reduction % in Depending 0 ÷100 heating mode on the model Pump ON compressor ON time delay 0÷255...
  • Page 32 Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans Boiler OFF Use of boiler in plant integration (Priority of intervention goes to the electric heaters) Use of boiler in DHW integration (Priority of intervention goes to the electric heaters) Use of boiler in plant and DHW integrations Types of utilization of the boiler 0÷6...

  • Page 33: Alarms

    15 ALARMS 15.1 WATER FLOW SWITCH ALARM E06 The water side flow switch is already installed inside the unit and DOES NOT HAVE to be tampered with or by-passed in any way. The flow switch is by-passed for 10 seconds after the unit’s start up. The alarm signal occurs after 5 seconds of the error appearance (lack of water flow, air inside the circuit, etc.).

  • Page 34: E41] 4-Way Valve

    Controller for MEX VS Chillers and inverter air / water heat pumps with axial fans 15.12 [E41] 4-WAY VALVE Manual rearm alarm, identifies
a
malfunctioning
of
the
4‐way
valve
due
to
inversion.
 The
alarm
is
not
active
for
a
bypass
time
of
approximately
180
seconds
from
the
compressor
startup.  In heating or DHW mode, the alarm is active when the bypass time has expired with water supply temperature less than the heat pump water return temperature.
  • Page 36 Technical data shown in this booklet are not binding. Thermocold shall have the right to introduce at any time whatever modifications deemed necessary to the improvement of the product.. 70026 Modugno – Bari Via dei Ciclamini, 25 – Z.I. Tel. 080/5312623 Internet: http://www.thermocold.it...

This manual is also suitable for:

Mex vs 18 rhMex vs 16 rhMex vs 19 rhMex vs 112 rhMex vs 112t rhMex vs 115 rh ... Show all

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