4. Capítulo Desarrollo, análisis y discusión de resultados
4.3 Tercer resultado: implementación de la propuesta
4.3.1 HALLAZGOS
If several control units are to be installed in a vertical position, leave a distance of at least 50 mm between them to allow the front cover to be opened and to insert the tool for removing the control from its housing.
2.2.2.6. Installation procedure
1. Insert the end of the screwdriver into the indents on the bottom of the bracket, push and rotate the screwdriver to remove the remote from the bracket.
Unscrew the base to release the bracket
2. Cable connection.
Connect and solder the accessory cable to the cable supplied with the unit. Insulate the contact area with vinyl tape.
Field supply cable
Accessory cable
Connection part
3. Choose one of the following installation options for securing the remote control, depending on the installation requirements:
- With remote control cable exposed. - Using an electrical box.
- With a bedside table.
In cases where the remote control cable is exposed.
Secure the cable holder accessory to the wall using 2 M4 screws (accessories).
If using an electric control box.
There are different types of electrical boxes available on the market that can be used for this installation, for example:
- Electrical box for one control unit (with or without cover.) - Electrical box for 2 control units (with or without cover.) - Other types of box
1. Pass the cable through the wall duct. 2. Pass the cable through the electrical box.
3. To secure the bracket to the box, make sure you leave the necessary length of cable, taking into account the height of the terminals A and B.
Screws M4 (field supply) Box
If using a bedside table
Cut a hole to leave the remote control exposed and prepare the bolts (over 140mm), as shown in the diagram.
NOTEThe bolts must be positioned in-line with the spacers (field supply).
Bold
Fit the bolts into the fixing bracket and secure the spacers with nuts.
- Bolt (field supply). - Nut (field supply). - Spacer (field supply).
NOTELeave a distance of at least 30mm between the spacer holes.
Bold (field supply) Spacer (field supply) Nut (field supply)
Remove the decorative cover and place the remote control in the
hole for installation. Nut
(field supply)
4. Secure the remote to the bracket using the screws and connect
the cable as shown in the diagram. Pass the cable through the hopple
5. Secure the remote to the fixing bracket. First connect the top, and then the bottom.
2.2.2.7. Electrical wiring
Standard electrical connection
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CAUTIONFor operational and safety purposes, fit the ring core "attachment" when installing the unit.
- Wind the remote control cable around the ring core twice, as shown in the diagram, before connecting it to the indoor unit terminal board.
- If the cable measures 0.75mm2 or more, the outer insulation must
be stripped (only on the part to be wound), otherwise you will not be able to wind the cable around the ring core.
- Secure the cable using the cable tie (accessory).
Cable tie
Ring core
Wiring remote control
This diagram shows an example of a conventional connection, with the cable connected to terminals A and B.
Electrical connection for several units
This remote control can control up to a maximum of 16 units. If this setting is changed, the wiring connection and other necessary tasks must be carried out, as shown below.
Two remote controls can be connected to the same unit or group of units. The second is a secondary remote control, as shown below. See "Optional functions" for more information.
Max. 16 indoor units
Terminal board Terminal board
Screws M3.5
Screws M3.5
Twisted pair cable: 1P - at least 0.75 mm²
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CAUTION- Use a 0.3 - 0.75 mm2 cable (maximum total cable length: 30m). If the total cable length exceeds 30m, use a twisted pair cable (1P - 0.75mm2) (maximum total cable length: 200 m). If using the remote control timer, the maximum total cable length is 100m. The use of other cables can produce noise, which may lead to a defective system operation.
- The remote control cable/indoor unit transmission cables and the power supply cable must be kept at least 30cm apart.
- If this distance is less than 30cm, install the cables in a conduit (type-D; ≤ 100 Ω) and connect one end to earth. Failure to do so may cause a fault or may cause the air conditioning unit to work incorrectly due to the noise. - If several indoor units are controlled simultaneously, establish the addresses for the refrigerant cycle and indoor
units. This is particularly important when simultaneously controlling indoor units with several refrigerant cycles since abnormal transmission may occur due to duplicate addresses.
- Do not leave any space in the remote control box cable hole. Any space must be covered using vinyl tape for example to prevent problems caused by dew or by insects entering the remote control box.
Field supply communication cable options.
Option 1:
- Twisted pair cable, 2 x 0,75 mm² (maximum total length 200m).
Side of the
terminal block remote controlSide of the Unwelded terminal
(type x 1.25-3X)
Option 2:
- Conventional shielded cable, 2 x 0.75 mm², for connecting the earth shielding on the side of the electric box (maximum total length 200m).
Side of the terminal block
Side of the remote control
Optional accessory cable.
Cables (twisted wire, 2 x 0.75 mm²) with different
lengths are provided as an optional supply and are fitted with connectors.
Cable reference Cable model Length (m)
7E790211 PRC-10E1 10
7E790212 PRC-15E1 15
7E790213 PRC-20E1 20
7E790214 PRC-30E1 30
2.2.2.8. Checking procedure
1. Switch on the power supply to all indoor units.
2. Models with automatic address function will take three to five minutes to complete the settings. 3. Set the system to “TEST RUN” mode from the outdoor units.
NOTE- The PC-ARH does not have Test Run mode. The test run must be carried out from the outdoor unit. - It takes 3 to 5 minutes to complete the automatic address setting after the power source is switched on. - The total number of units connected is indicated on the liquid crystal display.
Example:
When 1 indoor unit is connected.
- If the indicated number is incorrect, then there is an abnormal condition such as such as incorrect wiring, electrical noise, etc. - Switch off the power source and correct the wiring after checking the following points (wait at least 10 seconds before switching
the power source on/off)
- The indoor unit power source is not connected or the wiring is incorrect.
- Incorrect connection of cable between indoor units or incorrect connection of remote control cable. - Incorrect setting of rotary switch (setting overlapped) on PCB of the indoor units.
4. Cancelling test run mode
- Test Run mode will end automatically after 2 hours.
- Test Run mode can be cancelled from the outdoor unit or by pressing the on/off button on the PC-ARH.
NOTEThe operation mode during the test is stored on the PC-ARH. Once the Test Run is complete, select the operation mode - see “Optional functions".
2.2.3. Operation
NOTEIf the LOW fan speed is selected on the indoor unit and the outdoor temperature is above 21 °C, the compressor will be overloaded when the system is used in heating mode. The fan speed of the indoor unit must therefore be set to HIGH or MEDIUM as the safety devices may activate.
Description
SCHEDULED CHECK indicator Switches on during test mode4 6 7 8 9 10 11 1 2 3 5 12 13
Model:PC-ARH (E)
AUTO CONTROL indicatorAppears when the operating condition is limited
Alarm code indicatorAppears when there is an abnormal condition in the air conditioning unit
Operation mode indicator
OUN LED (green)Indicates that the unit is running.
RUN/STOP buttonThis button is used to start and stop the system.
MODE button: FAN : COOL : HEAT : DRY : AUTO
By pressing this button repeatedly, the setting will change in
sequence: “COOL”, “FAN”, “HEAT”, “DRY” or “AUTO”.”FAN” (to restrict the change of operation mode H3:01; no restriction, H3:02).
FAN SPEED buttonBy pressing this button repeatedly, the setting will change in sequence.
Swing louverStart the swing louver by pressing this button. Press it again to stop the swing louver. The louver will then stop at the angle indicated by the direction of the “
”indicator.
TEMP button (temperature setting)This button is used to establish the setting temperature.
Fan speed indicator
Swing louver indicator
Temperature indicator2.2.4. Optional Functions
2.2.4.1. Command functions
1. Switching to optional setting mode:
Press the “MODE” and “FAN SPEED” buttons at the same time for at least 3 seconds when the air conditioning unit is off.
The screen will change, as shown in the diagram, when optional setting mode is activated.
2. Changing options and setting elements:
Press “TEMP ” to change certain setting elements when shown.
To change setting options, press the “TEMP ” button.
Refer the following table for setting elements and options.
Press the “TEMP ” button to select setting elements
Press the “TEMP ” button to change the setting options 3. Cancelling the function selection mode:
To return to normal mode from 2., press the "MODE" and "FAN SPEED" buttons at the same time.
2.2.4.2. Optional functions list
Items Optional Function IndividualSetting ConditionSetting Contents
b1 Removal of Heating Temperature Compensation
○ 00 Standard (Set Temp.
+4ºC)
01 Removal (Set Temp.) 02 Set Temp. +2ºC (*1) b8 Automatic cooling/
heating mode × 0001 Not AvailableNot Available C5 Increasing Fan
Speed ○ 0001 Not AvailableHi Speed 1 (*2)
02 Hi Speed 2 (*2) C8 Thermistor of
Remote Control Switch
○ 00 Control by Indoor Suction
Thermistor 01 Control by Thermistor
of Remote Control Switch 02 Control by Average
Value of Indoor Suction Thermistor and Thermistor of Remote Control Switch F2 Remote Control
Main-Sub Setting × 0001 MainSub
FC Cooling Lower Limit for Setting Temperature (*4) × 00 Standard 01 Lower Limit +1ºC 02 Lower Limit +2ºC ... ... 09 Lower Limit +9ºC 10 Lower Limit +10ºC
Items Optional Function Individual
Setting ConditionSetting Contents
Fd Heating Upper Limit for Setting Temperature (*5) × 00 Standard 01 Upper Limit –1ºC 02 Upper Limit –2ºC ... 09 Upper Limit –9ºC 10 Upper Limit –10ºC
H1 Maintenance alarm 00 Show
01 Hide
H2 No automatic
control indication 0001 ShowHide
H3 Operation mode change restriction (5*)
00 Operation mode change off (hide operation mode) (factory setting) 01 Operation mode set by
the central control unit + “FAN” mod 02 Unlimited operation H4 Ventilation changeover (total heat exchanger only)
00 Air conditioning only 01 Ventilation only 02 Air conditioning + Ventilation H5 Central control available after forced stoppage. 00 Off 01 On
*1. Certain indoor units do not accept the setting “02”. *2. If installed on a bedside table, use the setting “00”. *3. Applies to “FAN”, “COOL” and “DRY” modes. *4. Applies to “HEAT” mode.
*5. “01” is only available when using a remote control. Do not use this setting when using two remote controls (primary/secondary).
NOTE- When connecting several indoor units, the same settings are applied to all units. - To change the settings, wait at least three minutes after switching the power on.
- Some indoor and outdoor units do not accept certain settings or do not have the functions that relate to the activated settings. Check the available settings beforehand.
- Note down the option selected in the "settings" column on the table.