Related Manuals for Airwell WELLEA HT Series
Summary of Contents for Airwell WELLEA HT Series
- Page 1 Installation Manual WELLEA HT Air to Water heat pump 23.AW.WELLEA.HT.IOM.R290.EN.04.12...
- Page 2 To ensure safe and efficient operation, we recommend that you carry out the necessary maintenance operations regularly. Our After-Sales service can help you with these operations. We hope that you will be satisfied with our services for many years. AIRWELL This manual is referring to the following unit : Designation...
- Page 3 The data contained in this manual are not binding and may be modified by the manufacturer without prior notice.
-
Page 4: Table Of Contents
SUMMARY SAFETY PRECAUTIONS ............................9 1.1. Symbols on the unit ............................9 1.2. Target group ..............................9 1.3. Intended use ..............................9 1.4. Regulations to be observed ..........................10 1.5. Safety instructions for working on the system ....................10 1.6. Working in the safety zone .......................... - Page 5 5.5. Balance Tank (Supplied by the User) ......................28 5.6. Additional Expansion Vessel ........................... 28 5.7. Circulation Pump ............................. 29 5.8. Thermistor ............................... 30 TYPICAL INSTALLATIONS ............................ 31 6.1. Controlled through the wired controller ......................31 6.1.1. Single-zone control ..........................31 6.1.2.
- Page 6 8.4.2. Wiring of main power supply ........................46 8.5. Control board ..............................48 8.5.1. Main control board ........................... 48 8.6. Connection of Other Components ........................50 8.6.1. Wiring of additional heat source control (AHS) ..................51 8.6.2. Wiring of 3-way valves SV1, SV2 and SV3 ..................... 51 8.6.3.
- Page 7 12. COMMISSIONING ..............................74 12.1. Test Run for the Actuator ..........................74 12.2. Air Purge ..............................75 12.3. Test Run ..............................75 12.4. Check of the Minimum Flow Rate ....................... 76 13. HAND-OVER TO THE USER ..........................76 13.1. Energy Saving Tips ............................. 76 13.2.
- Page 8 17.1. Refrigerant Removal, Evacuation, Charge, Recovery, and Unit Decommissioning ........87 18. TECHNICAL DATA ..............................89 18.1. General ................................ 89 18.2. Electrical Specifications..........................89 18.3. Piping Diagram ............................90 19. ANNEX ..................................93 19.1. Menu Structure (Wired Controller) ......................93...
-
Page 9: Safety Precautions
The work must fall within the range of applications 1. SAFETY PRECAUTIONS purchased and be carried out in accordance with the prescribed procedures. Soldering/brazing work on accumulator connections requires certification Meaning of DANGER, WARNING, CAUTION personnel and processes by a notified body according to the Pressure Equipment Directive (2014/68/EU). -
Page 10: Regulations To Be Observed
Intended use also covers installation in accordance with 1.6.Working in the safety zone the IP code. This appliance can be used by children aged from 8 DANGER years and above and persons with reduced physical, Risk of explosion: Refrigerant leak may form a sensory or mental capabilities or lack of experience and flammable or explosive atmosphere in the ambient air. -
Page 11: Working On The System
1.7.Working on the system work on the refrigerant circuit: •Check the refrigerant circuit for leaks. •Ensure very good ventilation especially in the floor Switch off the power supply for the unit (including all area and maintain this for the duration of the work. affiliated parts) at a separate fuse or mains isolator. -
Page 12: About The Refrigerant
1.9.About the Refrigerant •The charge size should depend on the size of the room within which refrigerant containing components are installed; WARNIG •The ventilation machinery and outlets should •The following applies to R290 refrigerant systems. operate adequately and not be obstructed; •Prior to work on systems containing flammable •If an indirect refrigerating circuit is used, the refrigerants, safety checks are necessary to minimize... - Page 13 flammable atmosphere. The test apparatus should be that: provided with the correct rating. •Mechanical handling equipment is available, if required, for handling refrigerant cylinders; Replace components only with parts specified by the •All personal protective equipment is available and manufacturer. Other parts may result in the ignition of being used correctly;...
-
Page 14: Leak Detection
The recovered refrigerant should be returned to the refrigerant supplier in correct recovery cylinders, with the relevant Waste Transfer Note arranged. Do not mix refrigerants in recovery units and especially not in cylinders. If any compressor or compressor oils is to be removed, ensure that it has been evacuated to an acceptable level to ensure that flammable refrigerant does not remain within the lubricant. -
Page 15: Introduction
2. INTRODUCTION 2.1.Validity of the instructions These instructions apply only to: 1 phase 3 phases Unit Net weight (kg) Wiring power supply 3G2.5 5G2.5 (mm²) Mini flow rate (l/min) Backup heater (kW) 9 (3/6/9) Wiring back up heater 3G2.5 5G2.5 power supply (mm²) 2.2.Unpacking... -
Page 16: Accessories Of The Unit
2.3.Accessories of the unit Accessories of the unit Name Illustration Quantity Specification Installation Manual (this manual) Operation Manual 4-6 kW : G1’’ Y-shape strainer 8-16kW : G1 1’’1/4 Wired controller box Thermistor (DHW tank, zone 2 water flow or balance tank) Drain joint Ø32 Energy label... -
Page 17: Transportation
2.4.Transportation 2.4.1.Dimensions and barycenter The illustrations below are for 8-16 kW units. The principle is the same for 4-6 kW units. A, B, and C indicate the locations of barycenter. Mobels 4-6 kW 1299 8-10 kW 1385 1ph 12-14-16 kW 1385 3ph 12-14-16 kW 1385... -
Page 18: Manual Transportation
2.4.2.Manual transportation 2.5.Parts to be Removed WARNIG Risk of injury from lifting a heavy weight. Lifting weights that are too heavy may cause injury to the spine, for example. • Note the weight of the product. •Have four people lift the product. 1.Take into consideration the weight distribution during transportation. -
Page 19: Operating Range
2.6.Operating range In DHW mode, the product works at an outdoor temperature of -25 to 46°C In cooling mode, the product works at an outdoor temperature of -5 to 46°C. TBH/IBH/AHS setting valid, only TBH/IBH/AHS turns on; Operation range by heat pump with possible If TBH/IBH/AHS setting is invalid, only heat pump limitation and protection. -
Page 20: Hydraulic Module
2.7.Hydraulic Module 4-6kW8-16kW Code Assembly unit Explanation Automatic air purge valve Automatically removes the remaining air from the water loop. Provides additional heating capacities when the heating capacity Backup heater of the heat pump is insufficient due to low outdoor temperature, and protects the external water pipes from freezing. -
Page 21: Safety Zone
Safety zone 3. SAFETY ZONE Siting the outdoor unit in front of an external wall The refrigerant circuit in the outdoor unit contains easily flammable refrigerant in safety group A3 as described in ISO 817 and ANSI/ASHRAE Standard 34. Therefore, a safety zone is defined in the immediate vicinity of the outdoor unit, in which special requirements apply. -
Page 22: Installation
4. INSTALLATION 4.1.Conditions for Installation Models 4-10kW Unit height + B ≥100* ≥1000 ≥500 ≥500 ≥300 ≥500 ≥500 ≥500 12-16kW Unit height + B ≥100* ≥1500 ≥500 ≥500 ≥300 ≥500 ≥500 ≥500 * In case of cold weather, take into account of snow on the ground. For more information, refer to 4.4 In Cold Climates. -
Page 23: Installation Site
In addition to “Safety zone”, the following conditions Installation by the sea should be observed. If the installation site is in the immediate vicinity of a coastline, ensure that the product is protected against Environment spraying water by an additional protection device. Wind from the sea brings saline substances to the land. -
Page 24: Precautions For Installation On A Ground
4.2.1.Precautions for installation on a •Maintain a sufficient clearance from any roof escape hatches and flat-roof windows. Use suitable ground protective equipment (e.g. barriers) to prevent people from stepping on or falling through any escape hatches •Avoid any installation site that is in the corner of a and flat-roof windows. -
Page 25: Installation On A Flat Roof
Installation on a solid ground In case of installation on a solid ground such as concrete, create a concrete strip foundation comparable to what is described in the section above. The height of the strip foundation should not be smaller than 100 mm. Unit mounting Installation with foundation: Fix the unit with foundation bolts. - Page 26 Installation on a soft ground Sewer Draining condensate into a gravel bed For installation on a ground, the condensate must be discharged through a downpipe into a gravel bed that is located in a frost-free area. a - Outdoor unit The downpipe must flow into a sufficiently large gravel b - Concrete strip foundations bed so that the condensate can trickle away freely.
-
Page 27: Cold Climates
4.5.Cold Climates 5. SYSTEM DESIGN It is recommended that the unit be placed with the rear side against the wall. 5.1.Capacity and Load Curve Install a lateral canopy on top of the unit to prevent lateral snowfall in extreme weather conditions. Match the load with appropriate capacity of the unit Install a high pedestal or wall mount the unit to keep a based on the curve below. -
Page 28: Room Thermostat (Supplied By The User)
Recommendation for the tank : 5.6.Additional Expansion Vessel 4-6 kW 8-10 kW 12-16 kW Tank volume 100-250 150-300 250-500 When the capacity of the integrated expansion vessel is Stainless steel insufficient for the system due to high water volume, an m²... -
Page 29: Circulation Pump
NOTE It is recommended to install an expansion vessel for the tapping water side. 5.7.Circulation Pump The relationship between the external static pressure (ESP) and the water flow rate is shown as follows: 4-6kW Flow rate (kPA) 29.6 2.892 36.1 2.708 43.7 2.49... -
Page 30: Thermistor
CAUTION Installing the valves in wrong position can damage the circulation pump. DANGER If it is necessary to check the running status of the pump with the unit powered on, please do not touch the internal electronic control box components to avoid electric shock. 5.8.Thermistor This table referring to the temperature sensor in the water loop side. -
Page 31: Typical Installations
6. TYPICAL INSTALLATIONS The application examples given below are only for illustration purposes. 6.1.Controlled through the wired controller 6.1.1. Single-zone control Code Component Code Component TBH: domestic hot water tank booster heater Main unit 11.1 (field supply) User interface 11.2 Coil 1, heat exchanger for heat pump SV1: 3-way valve (field supply) Filter (accessory) -
Page 32: Double-Zone Control
Control logic : Space heating : • The ON/OFF signal, operation mode, and temperature are set on the user interface. P_o keeps running as long as the unit is ON for space heating while SV1 remains OFF. Domestic water heating •... -
Page 33: Control Through The Wired Controller And Room Thermostat
Control logic : Space heating : • The ON/OFF signal, operation mode, and temperature are set on the user interface. P_o keeps running as long as the unit is ON for Zone 1 for space heating while SV1 remains OFF. P_c keeps running as long as the unit is ON for Zone 2 for space heating while SV1 remains OFF. -
Page 34: Control Through Mode Setting
6.2.2. Control through mode setting Code Component Code Component Main unit Shut-off valve (field supply) User interface Filling valve (field supply) Balance tank (field supply) Drainage valve (field supply) Automatic air purge valve (field supply) Collector/distributor (field supply) Drainage valve (field supply) Bypass valve (field supply) Tbt1: upper temperature sensor of balance tank SV2: 3-way valve (field supply) -
Page 35: Double-Zone Control
6.2.3. Double-zone control Code Component Code Component Main unit Drainage valve (field supply) User interface Collector/distributor Balance tank (field supply) Bypass valve (field supply) Automatic air purge valve (field supply) Mixing station (field supply) Drainage valve (field supply) 23.1 SV3: mixing valve (field supply) Tbt1: upper temperature sensor of balance tank 23.2 P_c: Zone 2 circulation pump (field supply) -
Page 36: Hydraulic Installation
Unit Flow rate range 7. HYDRAULIC INSTALLATION 0.40 - 0.90 m3/h 0.40 - 1.25 m3/h 0.40 - 1.65 m3/h 7.1.Preparations for Installation 10kW 0.40 - 2.10 m3/h 12kW 0.70 - 2.50 m3/h NOTE 14kW 0.70 - 2.75 m3/h In case of plastic pipes, make sure they are fully 16kW 0.70 - 3.00 m3/h oxygen-tight according to DIN 4726. -
Page 37: Thermistor Of Domestic Hot Water Tank
NOTE Requirements •Performance NOTE Performance data for third-party tanks is unavailable, and the performance CANNOT be guaranteed. •The pipe inside must be clean. •Configuration •Hold the pipe end downwards when removing Configuration of a third-party tank depends on the size burrs. -
Page 38: Water
4-6 kW8-16 kW Water OUTLET (connection with screws, male, 1" for 4/6 kW units and 1 1/4" for 8-16 kW units) Water INLET (connection with screws, male, 1" for 4/6 kW units and 1 1/4" for 8-16 kW units) Y-shaped strainer (delivered with the unit) (2 screws for connection, female, 1" for 4/6 kW units and 1 1/4"... -
Page 39: Filling Water Loop With Water
7.4.Filling Water Loop with Water NOTE Before filling with water, please check 6.3 Water for the water quality requirements. Pumps and valves may become stuck as a result of poor water quality. Connect the water supply to the filling valve and open the valve. -
Page 40: Protected By Glycol
7.7.2. Protected by glycol Lowest expected Prevention from Prevention from outdoor temperature bursting freezing Glycol lowers the freezing point of water. –5°C –10°C CAUTION –15°C Ethylene glycol and propylene glycol are toxic. –20°C N/A* –25°C N/A* CAUTION –30°C N/A* Glycol can corrode the system. When uninhibited glycol * Additional action is needed to prevent freezing. -
Page 41: Measure Without Freeze Protection
7.7.4. Measure without freeze protection In cold environments, if there is no antifreeze (e.g. glycol) in the system or lasting power failure or pump failure is foreseen, drain the system (as shown in the figure below). NOTE Rotate the flow switch counterclockwise to remove it. Dry the flow switch completely. -
Page 42: Electrical Installation
8. ELECTRICAL INSTALLATION DANGER Risk of electrocution. 8.1.Opening the Electrical Box Cover To access the unit for installation and maintenance, follow the instructions below. WARNIG Risk of electrocution. Risk of burning. NOTE Illustrations below are based on 8-16 kW units. The principle is the same for 4-6 kW units. -
Page 43: Opening The Electrical Box Cover
8.2.Opening the Electrical Box Cover WARNIG The wiring must comply with local laws and regulations. Follow the electrical wiring diagrams for electrical wiring (the electrical wiring diagrams are located on the rear side of the switch box service panel). CAUTION A main switch or other means of disconnection, such as having a contact separation in all poles, must be incorporated in the fixed wiring in accordance with relevant local laws and regulations. -
Page 44: Opening The Electrical Box Cover
8.3.Opening the Electrical Box Cover 8.3.1. Field wiring guidelines •Most field wiring of the unit is to be made on the terminal block inside the switch box. To gain access to the terminal block, remove the switch box service panel. •Fix all cables with cable ties. -
Page 45: Tightening Torque And Tie Wrap
Backup heater Outdoor unit Power current Model Voltage Min. Max. TOCA 3kW 1-PH 220-240 13.5 13.5 3kW 3-PH 380-415 6kW 3-PH 380-415 9kW 3-PH 380-415 13.5 13.5 MCA: min. circuit current (A)KW : rated motor outputMFA: max. fuse current (A) TOCA: total over current (A)FLA : full-load current (A)MSC: max. -
Page 46: Wiring Of Main Power Supply
1-phase with backup heater. Figure 7.1 Proper power wiring connections Figure 7.2 8.4.2. Wiring of main power supply NOTE Use a round crimp-style terminal for connection to the power supply terminal board. •The power cord model is H05RN-F or H07RN-F. •Illustrations below are for 3-phase units. - Page 47 3-phase with backup heater. NOTE Leakage protection switch must be installed.
-
Page 48: Control Board
8.5.Control board 8.5.1.Main control board The main control board is the same board for the model, 4-6 kW, 8-10 kW, 12-14-16 kW 1ph, 12-14-16 kW 3ph. - Page 49 N° Port Code Assembly unit N° Port Code Assembly unit CN60 HEAT2 Reserved Port for smart grid (grid signal) 0-12VDC CN63 Port for smart grid (photovoltaic CN41 HEAT1 Reserved 230VAC 0-12VDC signal) CN40 OUT1 OUT1 230VAC CN61 M1M2 Port for remote switch 0-12VDC Control port for internal backup CN62...
-
Page 50: Connection Of Other Components
Type 2 8.6.Connection of Other Components The port provides the control signal to the load. Two kinds of control signal ports: •Type 1: dry contactor without voltage. •Type 2: The port provides the signal with 220 V-240 V~ 50 Hz voltage. NOTE If the current of load is smaller than 0.2 A, load can connect to the port directly. -
Page 51: Wiring Of Additional Heat Source Control (Ahs)
8.6.1. Wiring of additional heat source control 8.6.2. Wiring of 3-way valves SV1, SV2 and SV3 (AHS) SV1 is controlling the change between Heating/Cooling and Domestic Hot Water mode. If you want to install the unit with a gas boiler or oil boiler, you need to control it. -
Page 52: Wiring Of Additional Pumps
8.6.3. Wiring of additional pumps P_o is the additional circulation pump. It is controlling Zone 1. P_c is the additional circulation pump for the Zone 2. P_s is the circulation pump for the solar panel. P_d is the recirculation pump for the Domestic Hot Water. -
Page 54: Wiring Of Tank Booster Heater (Tbh)
8.6.4. Wiring of tank booster heater (TBH) 8.6.5. Wiring of alarm or defrost run (P_x) If you install a Domestic Water Tank, please install also If needed, you can connect a alarm output or defrost a Tank Booster Heater (TBH). This will allow the heat output to this port. -
Page 55: Wiring Of Room Thermostat (Rt)
8.6.6. Wiring of room thermostat (RT) Room thermostat (low voltage): "POWER IN" provides the voltage to the RT. NOTE The room thermostat must be low-voltage. (12V) -
Page 56: Wiring Of Solar Energy Input Signal (Low Voltage)
The thermostat cable can be connected in three ways 8.6.7. Wiring of solar energy input signal (low (as described in the figures above) and the specific voltage) connection method depends on the application. Method A (Mode setting control) RT can control heating and cooling individually, like the controller for 4-pipe FCU. -
Page 57: Wiring Of Smart Grid
8.6.9. Wiring of smart grid or equal to Min (T5S+3,60), the IBH will be turned off. 3) SG=OFF, EVU=OFF. The unit has a smart grid feature, and there are two The unit will operate properly. ports on the PCB to connect SG signals and EVU signals as below: 4) SG=ON, EVU=OFF. -
Page 58: Cascade Function
8.7.Cascade Function CAUTION 1. The cascade function of the system supports up to 6 units. 2. To ensure successful automatic addressing, all units must be connected to the same power supply and powered on uniformly. -
Page 59: Connection For Other Optional Components
3. Only the master unit can connect with the controller, and the SW9 of the master unit must be switched to “on”. Slave units cannot connect with the controller. 4. Please use shielded wires and make sure they are well grounded. 8.8.Connection for Other Optional Components 8.8.1. -
Page 60: Installation Of Wired Controller
Use tie wraps After wiring, the sleeve should be fastened with a tie wrap (accessory) 9. INSTALLATION OF WIRED CONTROLLER CAUTION • The general instructions on wiring in previous chapters should be observed. • The wired controller must be installed indoors and kept away from direct sunlight. •... -
Page 61: Wiring
9.3.Wiring Input voltage (HA/HB) 18 VDC Wire size 0.75 mm Wire type 2-core shielded twisted pair cable Wire length L1<50 m The maximum length of the communication wire between the unit and the controller is 50 m. -
Page 62: Mounting
9.4.Mounting NOTE Only wall-mount the wired controller, instead of embedded, otherwise maintenance will not be possible. Mounting on a wall (without an 86-type box) Directly install the back cover on the wall with four ST4 x 20 screws. Mounting on a wall (with an 86-type box) Install the back cover on an 86-type box with two M4 x 25 screws, and fixing the box on the wall with two ST4 x 20 screws. -
Page 63: Completion Of Installation
NOTE Over-tightening the screw can cause deformation of the back cover. 10.COMPLETION OF INSTALLATION DANGER Risk of electrocution. Risk of burning. NOTE The illustrations below are for 8-16 kW units. The principle is the same for 4-6 kW units. Tightening torque 4.1 N·m... -
Page 64: Configuration
11.CONFIGURATION The unit should be configured by an authorized installer to match the installation environment (outdoor climate, installed options, etc.) and meet the user demand. Follow the instructions below for the next step. 11.1.Check Before Configuration Before powering on the unit, check the following items: N°... -
Page 65: Configuration
SERVICEMAN mode. 11.2.Configuration Temperature values displayed on the wired controller (user interface) are measured in °C. 11.2.1.DHW setting To initialize the unit, a group of advanced settings should be provided by the installer. The advanced Select the target item and enter the setting page. Adjust settings are accessible in FOR SERVICEMAN mode. -
Page 66: Heating Setting
11.2.3.Heating setting 11.2.5.Temp. type setting Select the target item and enter the setting page. Adjust Select the target item and enter the setting page. Adjust the launch settings and values based on end user the launch settings and values based on end user demands. -
Page 67: Other Heat Source
enforced to be NON. •When Room thermostat is set to DOUBLE ZONE, DOUBLE ZONE is enabled automatically, and the 3) When DHW mode is invalid, IBH function is enforced temperature control mode is water temperature control. to be HEAT. Room thermostat MODE •When... -
Page 68: Restoration Of Factory Settings
11.2.10. Restoration of factory settings Allow all operating parameters to be restored to the factory preset values. Select YES and confirm to validate this function. The first line is the operating status. Grey means it is off, and green means it is on. T1S is the set temperature. -
Page 69: Auto Restart
t_Dryup is the time for which the unit rises the temperature. 11.2.14. Power input limitation t_Highpeak is the time for which the unit maintains the temperature. Select the target item and enter the setting page. Adjust t_Drydown is the time for which the unit drops the the launch settings and values based on end user temperature. -
Page 70: Cascade Setting
11.2.16. Cascade setting Select the target item and enter the setting page. Adjust the launch settings and values based on end user demands. All set parameters and limitations can be found in 11.3 Operation Settings. All set parameters and limitations can be found in 11.3 Operation Settings. -
Page 71: Configuration
11.3.Configuration Title Code State Default Interval Unit Enable or disable DHW mode: DHW mode 0=NON, 1=YES Enable or disable the disinfect mode: Disinfect 0=NON, 1=YES Enable or disable DHW priority mode: DHW priority 0=NON, 1=YES Enable or disable DHW pump mode: Pump_D 0=NON, 1=YES Enable or disable DHW priority time setting:... - Page 72 Title Code State Default Interval Unit Enable or disable the heating mode: Heating mode 0=NON, 1=YES The refresh time of climate-related curves in t_T4_FRESH_H Hour heating mode The maximum ambient operating temperature T4HMAX °C in heating mode The minimum ambient operating temperature T4HMIN °C in heating mode...
- Page 73 Minimum set temperature of additional MIN-SETHEATER °C heating source MAX- The voltage corresponding to the maximum set SIGHEATER temperature of additional heating source The voltage corresponding to the minimum set MIN-SIGHEATER temperature of additional heating source Enable or disable the TBH (TANK BOOSTER TBH FUNCTION HEATER) function: 0=NON, 1=YES The temperature difference between T5 and...
-
Page 74: Commissioning
The time for which the compressor has run t_DELAY PUMP Minute before startup of the pump t1_ANTILOCK The pump anti-lock interval Hour PUMP t2_ANTILOCK The pump anti-lock running time Second PUMP RUN t1-ANTILOCK SV The valve anti-lock interval Hour t2-ANTILOCK SV The valve anti-lock running time Second The corrected value of Ta inside the wired... -
Page 75: Air Purge
What - Actuator List N° Name Note Three-way valve 2 Three-way valve 3 Pump_I Integrated pump Pump_O Outside pump Pump_C Zone 2 pump Internal backup heater Additional heat source Three-way valve 1 Invisible if DHW is disabled Pump_D Circulation pump for DHW Invisible if DHW is disabled Pump_S Solar pump... -
Page 76: Check Of The Minimum Flow Rate
NOTE In performance test, the target temperature is preset and cannot be changed. If the outdoor temperature is outside the range of operating temperature, the unit may not operate or may not deliverthe required capacity. 12.4.Check of the Minimum Flow Rate Check the hydraulic configuration to find out the space heating loops that can be closed by mechanical, electronic, or other valves. -
Page 77: Additional Operation Reference
13.2.Additional Operation Reference 13.2.1. Mode What Set the unit operation mode for room comfort. Three modes in all – Space heating mode, space cooling mode, and auto mode. The unit will select the operation mode automatically based on the outdoor ambient temperature and some AUTO settings in "FOR SERVICEMEN". - Page 78 Standard Up to 8 curves are preset by the manufacturer, and the parameter values are as below. For heating (FLH – underfloor heating application): ≤-20 ≤-19 ≤-18 ≤-17 ≤-16 ≤-15 ≤-14 ≤-13 ≤-12 ≤-11 ≤-10 1-T1S 2-T1S 3-T1S 4-T1S 5-T1S 6-T1S 7-T1S 8-T1S...
- Page 79 For heating (RAD – radiator application, FCU – fan coil application): ≤-20 ≤-19 ≤-18 ≤-17 ≤-16 ≤-15 ≤-14 ≤-13 ≤-12 ≤-11 ≤-10 1-T1S 2-T1S 3-T1S 4-T1S 5-T1S 6-T1S 7-T1S 8-T1S ≤-9 ≤-8 ≤-7 ≤-6 ≤-5 ≤-4 ≤-3 ≤-2 ≤-1 1-T1S 2-T1S 3-T1S 4-T1S...
-
Page 80: Dhw Setting
For cooling (FCU – fan coil application): 30≤T4 -10≤T4＜15 15≤T4＜22 22≤T4＜30 1-T1S 2-T1S 3-T1S 4-T1S 5-T1S 6-T1S 7-T1S 8-T1S About Temperature offset T1S – Set water temperature It makes the overall set water temperature of the T4 – Outdoor ambient temperature temperature curve increase... -
Page 81: Options
Tank heater 13.2.7. Error info •The tank heater and backup heater cannot operate simultaneously. The most recent setting is valid What while the previous setting becomes invalid Error history of the unit. •For instance, when the backup heater is valid and The first column shows the unit number, if slave units running, if the tank heater is turned off, the backup are available. -
Page 82: Troubleshooting
14.TROUBLESHOOTING This section provides useful information about diagnosing and correcting certain problems that may occur to the unit. 14.1.General Guidelines Before starting the troubleshooting procedure, visually inspect the unit and look for obvious defects such as loose connections or defective wiring. When a safety device is activated, stop the unit and find out the cause of such activation before resetting the safety device. - Page 83 Symptom 4: The water pressure relief valve opens. POSSIBLE CAUSE TROUBLESHOOTING Broken expansion vessel Replace the expansion vessel. Water pressure in the installation Make sure that the water pressure in the installation is within 0.10 to 0.20 MPa. higher than 0.3 MPa. Symptom 5: The water pressure relief valve leaks.
-
Page 84: Error Codes
Symptom 9: The unit cannot switch from DHW mode to Heating mode immediately POSSIBLE CAUSE TROUBLESHOOTING Set "t_DHWHP_MAX" to the minimum value. The suggested value is 60 min. Small heat exchanger for space If the circulation pump out of the unit is not controlled by the unit, try to connect heating it to the unit. -
Page 85: Maintenance
15.2.6.Pressure relief valve of domestic hot 15.MAINTENANCE water tank (supplied by the user) Applicable only to installations with a domestic hot Regular checks and inspections at certain intervals are water tank. Check for correct operation of the pressure required to guarantee the optimal performance of the relief valve on the domestic hot water tank. -
Page 86: Flow Switch Failure
15.2.12.Flow switch failure brazing is required, all of the refrigerant should be recovered from the system, or isolated (by means of shut off valves) in a part of the system that is remote Water may enter the flow switch and may freeze when from the leak. -
Page 87: Repair Of Sealed Components
16.5.Repair of Sealed Components 17.DISPOSAL a)During repair of sealed components, all electrical supplies should be disconnected from the equipment General being worked upon prior to any removal of sealed Components and accessories of the unit are not covers. If it is absolutely necessary to have an electrical ordinary domestic wastes. - Page 88 Ensure that the outlet of the vacuum pump is not closed remain within the lubricant. Carry out the evacuation to any ignition sources and adequate ventilation is process before returning the compressor to the available. suppliers. To accelerate this process, you can only heat the compressor body electrically.
-
Page 89: Technical Data
18.TECHNICAL DATA 18.1.General 1-phase 1-phase 1-phase 3-phase Model 4/6 kW 8/10 kW 12/14/16 kW 12/14/16 kW Nominal capacity Refer to the Technical Data Dimensions H×W×D 717*1299*426 mm 865*1385*523 mm 865*1385*523 mm 865*1385*523 mm Packing dimensions 885*1375*475 mm 1035*1465*560 mm 1035*1465*560 mm 1035*1465*560 mm H×W×D Weight (without backup heater) -
Page 90: Piping Diagram
18.3.Piping Diagram 4-6 kW units (without electric heater) Item Description Item Description Compressor Electronic expansion valve Temperature sensor (plate heat exchanger inlet Temperature sensor (compressor discharge) refrigerant: cooling) Temperature sensor (compressor suction) Liquid reservoir High pressure switch Temperature sensor (water inlet) High pressure sensor Heat tape (plate heat exchanger) Temperature sensor (plate heat exchanger... - Page 91 4-16 kW (With electric heater) Item Description Item Description Compressor Electronic expansion valve Temperature sensor (plate heat exchanger inlet Temperature sensor (compressor discharge) refrigerant: cooling) Temperature sensor (compressor suction) Liquid reservoir High pressure switch Temperature sensor (water inlet) High pressure sensor Heat tape (plate heat exchanger) Temperature sensor (plate heat exchanger 4-way valve...
- Page 92 8-16 kW units (without electric heater) Item Description Item Description Compressor Electronic expansion valve Temperature sensor (plate heat exchanger inlet Temperature sensor (compressor discharge) refrigerant: cooling) Temperature sensor (compressor suction) Liquid reservoir High pressure switch Temperature sensor (water inlet) High pressure sensor Heat tape (plate heat exchanger) Temperature sensor (plate heat exchanger 4-way valve...
-
Page 93: Annex
19.ANNEX 19.1.Menu Structure (Wired Controller) (1) Invisible if corresponding function is disabled. (2) The layout could be different if the corresponding function is disabled or enabled. There are also some other items that are invisible if the function is disabled. - Page 94 For serviceman...
- Page 95 GROUPE AIRWELL 10 RUE DU FORT DE SAINT CYR 78180 MONTIGNY LE BRETONNEUX FRANCE www.airwell.com 23.AW.WELLEA.HT.IOM.R290.EN.04.12...