Contents INTRODUCTION..............................13 Precautions against residual risks ........................13 General description ............................... 14 Information about the refrigerant used ........................14 Installation requirements ............................14 1.1. Information about installation of systems with R32....................15 RECEIVING THE UNIT ............................17 OPERATING LIMITS ............................18 Storage ..................................
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PERIODIC OBLIGATORY CHECKS AND STARTING UP OFTHE GROUPS (UNITS)........69 IMPORTANT INFORMATION ON THE REFRIGERANT USED ................. 70 Factory and Field charged units instructions ......................70 PERIODIC CHECKS AND COMMISSIONING OF PRESSURE EQUIPMENT ........... 71 DISMISSION AND DISPOSAL ..........................71 DURATION ................................
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LIST OF TABLES Table 1 –Minimum percentage of glycol for the low water temperature..................19 Table 2 - DAE Water quality requirements ............................28 Table 3 - Minimum water flow................................29 Table 4 – Table 1 of EN60204-1 Point 5.2 ............................37 Table 5 –...
Fig. 1 – Typical refrigerant circuit for cooling only version (EWWT-Q) The input and output of the water of the condenser and the evaporator are approximate. Consult the dimensional drawings of th e unit for the exact hydraulic connections. D-EIMHP01702-23_00EN- 5/72...
Fig. 2 Typical circuit for moto-evaporating version (EWLT-Q) The input and output of the water of the evaporator are approximate. Consult the dimensional drawings of the unit for the exact hydraulic connections. D-EIMHP01702-23_00EN- 6/72...
Fig. 3 Typical refrigerant circuit for heat pump version The input and output of the water of the condenser and the evaporator are approximate. Consult the dimensional drawings of th e unit for the exact hydraulic connections. D-EIMHP01702-23_00EN- 7/72...
Fig. 4 Typical hydronic manifold and pump module circuit The input and output of the water of the condenser and the evaporator are approximate. Consult the dimensional drawings of th e unit for the exact hydraulic connections. D-EIMHP01702-23_00EN- 8/72...
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REFRIGERANT PED/PER LINE PS [bar] TS [°C] GROUP HIGH PRESSURE GAS +20/+130 HIGH PRESSURE LIQ -30/+65 LOW PRESSURE 25,5 -30/+25 WATER WATER IN/OUT -15/+65 CIRCUITS D-EIMHP01702-23_00EN- 10/72...
Fig. 5 Connection of more unit-manifold systems together and with pump module The input and output of the water of the condenser and the evaporator are approximate. Consult the dimensional drawings of th e unit for the exact hydraulic connections. D-EIMHP01702-23_00EN- 11/72...
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Legend Condenser pump Evaporator pump Expansion tank 18 L Plugged fitting 1/2" NPT Plugged fitting 1/4" NPT Air vent 3/8" NPT (install in the highest point) Drain 1/2" Electrical heater 3/4" G Automatic filling valve fitting 1/2" G Manifold with Victaulic connection Manual actuated valve Motor actuated valve Victaulic connection...
INTRODUCTION This manual is an important supporting document for qualified personnel, but it is not intended to replace such personnel. Read this manual carefully before installing and starting up the unit. Improper installation could result in electric shock, short-circuit, coolant leaks, fire or other damage to the equipment or injure to people.
The Daikin EWWT-Q/ EWLT-Q / EWHT-Q modular water-cooled water chillers and heat pump can be used for cooling and heating applications. XS version is designed for indoor installation while XR version is suitable also for outdoor installation. EWWT-Q and EWLT-Q units are available in 3 standard sizes and for their nominal cooling capacities see Databook tables.
1.1. Information about installation of systems with R32 Physical characteristics of R32 refrigerant Safety class (ISO 817) PED Group Practical limit (kg/m 0.061 ATEL/ ODL (kg/m 0.30 LFL (kg/m ) @ 60°C 0.307 Vapour density @25°C, 101.3 kPa (kg/m 2.13 Molecular mass 52.0 Boiling point (°...
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▪ Be either in the air flow with the motor outside the airflow or rated for hazardous areas (according to the assessment). ▪ Be located to avoid pressurization of the exhaust ductwork in the machinery room. ▪ not cause sparks to occur if it contacts the duct material. Airflow of the emergency mechanical ventilation shall be at least: V = 0,014 ×...
RECEIVING THE UNIT The unit must be inspected for any possible damage immediately upon reaching final place of installation. All components described in the delivery note must be inspected and checked. Should there be evidence of damage, do not remove the damaged components and immediately report the extent and type of damage both to the transportation company, asking them to inspect it, and the manufacturer's representative, sending if possible, photos which may be useful in identifying the responsibilities.
OPERATING LIMITS Storage The unit, in XS version, must be installed and stored indoor. The unit, in XR version, must be protected from dust, rain, constant exposure to the sun and possible corrosive agent when being stored outside before installation (both Indoor and Outdoor installation). Even though it is covered by a heat-shrinking plastic sheet, it is not intended for long-term storage and must be removed as soon as the unit is unloaded.
Operation with Water Operation with Glycol + Water Solution The evaporator water inlet must never exceed the temperature of 40°c. The charts shown above constitute a guideline on operating limits in the range. Refer to the CSS selection software for the actual operating limits in the working conditions for each model.
MECHANICAL INSTALLATION Safety All EWWT-Q/ EWLT-Q / EWHT-Q machines are built in compliance with the main European Directives (Machinery Directive, Low Voltage Directive, Electromagnetic Compatibility Directive, PED Pressure Equipment Directive); be sure to receive, together w ith the documentation, also the Declaration of Conformity (DoC) of the product to the directives. Before installation and commissioning of the machinery, the people involved in this activity must have acquired the informati on necessary to perform these tasks, applying all the information gathered in this manual.
Fig. 8 – Handling of the single circuit unit Fig. 9 – Alternative handling method with forklift 678 mm 550 mm Minimum fork length needed 1050 mm Minimum fork length needed 1050 mm D-EIMHP01702-23_00EN- 21/72...
Fig. 10 – Alternative handling method with pallet truck RIMUOVERE PRIMA DELL’INSTALLAZIONE (TO BE REMOVED BEFORE INSTALLATION) Minimum fork length needed 1200 mm RIMUOVERE PRIMA DELL’INSTALLAZIONE (TO BE REMOVED BEFORE INSTALLATION) Minimum fork length needed 1050 mm Consult the dimensional drawing for the hydraulic and electrical connection of the units. The overall dimensions of the machine, as well as the weights described in this manual, are purely indicative.
Isolating valves to isolate the unit from the water system of the installation during service operations. 3. To protect the unit, the BPHE must be protected against freezing by continuous monitoring of the water flow in the BPHE by a flow switch provided with unit. Be sure to install the flow switch according to the instructions present in this manual (See paragraph WATER PIPING INSTALLATION PROCEDURE).
Fig. 11 – Reference drawing for evaporator and condenser identification Condenser Evaporator Electrical panel The units have a water input and output for the connection of the chiller to water circuit of the system. This circuit must b e connected to the unit by an authorised technician and must comply with all the current national and local regulations on the subject. If dirt penetrates the water circuit, there could be problems.
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4.5.2.1 Preparing the unit for connection to the water circuit. ® A box containing Victaulic couplings is delivered with the unit. Water IN/OUT accessory kit for standalone units Evaporator water entry Flow Switch Water entry sensor Water entry pipe with flow switch and temperature sensor of the incoming water Joint In situ water pipe circuit Manifold accessory for modular installation...
4.5.2.2 Connecting the water inlet pipe containing the flow switch. The water inlet pipe containing the flow switch is mounted on the side of the water inlet of the evaporator (condenser in case of ® EWHT-Q series) and is pre-insulated. Cut the tie wraps and fix the pipe with the supplied Victaulic couplings to the evaporator/condenser inlet.
Fig. 14 – Cables routing of evaporator flow switch Condenser flow switch cable Fig. 15 – Electrical panel entry point for evaporator and condenser flow switch cables Entry cable 4.5.2.4 Connecting the water outlet pipe. The water outlet pipe is mounted on the side of the water outlet of the evaporator/condenser and is pre-insulated. Cut the tie wraps ®...
4.5.2.5 Connecting the counter pipes Weld the supplied counter pipes to the ends of the water circuit and connect to the unit with the provided Victaulic® couplings. Drain taps must be provided at all low points of the system to permit complete drainage of the circuit during maintenance or in case of shut down.
Failing t o follow the instructions above could result in unit damage. Damage caused by freezing is not covered by the warranty. Damage caused by freezing is excluded from the warranty, therefore daikin applied europe s.p.a declines all responsibility...
After the equipment is correctly installed, leak tested and evacuated, it can be charged with refrigerant and started under t he supervision of Daikin authorized technician. Total refrigerant charge will depend on the used remote condenser and volume of refrigerant piping.
Fig. 17 – Connecting the refrigerant circuit (1) 1 Remote condenser 2 Indoor water chillers 3 Discharge 4 Oil trap 5 Liquid A>0 m piping length: equivalent = 50 m maximum height = 30 m • It is highly recommended, prior to the installation of the units, to perform a vacuum within the piping system using a 2 -stage vacuum pump with a non-return valve that can evacuate to a gauge pressure of −...
5.3.1 To braze the pipe end Precautions when connecting field piping. Add brazing material as shown in the figure below: ▪ When brazing, blow through with nitrogen to prevent creation of large quantities of oxidised film on the inside of the piping . This film adversely affects valves and compressors in the refrigerating system and prevents proper operation.
Take care for contamination of the remote condenser in order to avoid blocking of the system. It is impossible for Daikin to control the contamination of the "foreign" condenser of the installer. The Daikin unit has a strict contamination level.
ELECTRICAL INSTALLATION To install the main switch handle and shaft The main switch is provided shipped loose with the unit, it must be installed before any electrical operation. Open the door of the electrical panel and mount the main switch handle and shaft parts. The handle of the main switch is mounted on the electrical panel door.
Fig. 21 – Details of the pistol handle Handle type Shaft diameter B Length L OH_45J6 6/0.24 45/1.77 General specifications Refer to the specific wiring diagram for the unit you have bought. If the wiring diagram is not provided with the unit or if it has been lost, please contact your manufacturer representative, who will send you a copy.
Provide an electrical circuit to connect the unit. It must be connected to the copper cables with an adequate section relativ e to the plate absorption values and according to the current electrical standards. Daikin Applied Europe S.p.A. declines all responsibility for an inadequate electrical connection. The connections to the terminals must be made with copper terminals and cables, otherwise overheating or corrosion may occur at the connection points with the risk of damaging the unit.
product need to be connected to a low voltage public distribution system, specific additional measures will have to be taken to avoid interference with other sensitive equipment. Before any electrical connection work to the compressor motor and / or the fans, make sure that the system is switched off and the main switch of the unit is open.
Electrical panel label description Fig. 22 – Identification of the labels applied to the electric panel (Standard*) Identification of the labels 1 – Manufacturer’s logo 5 – Instructions for handling / lifting 2 – Type of coolant in the circuit/s 6 –...
C+C+C+C *This is a reference table at nominal water conditions. For the specific capacity rating, refer to Daikin software selection. For the field installation the order of modules is not mandatory, it can vary from the dispositions showed in the table.
Fig. 23 – Connection instructions between chiller and manifold modules Connection plate on each side After installation of manifold module and before connection to the chiller module, it is important to clean and remove weldin g oxides and other contamination products deriving during production of the water piping. The cleaning steps are the following: Flush the pipes with a solution of hot water and a mild detergent.
7.1.3 Reference drawing in case of custom water piping In case the manifold module is not provided by Daikin, it is possible to refer to the following indication for customer piping connection. Fig. 25 – Water piping configuration CONDENSER OUT EVAPORATOR [7.9 inches]...
7.2.2 Water manifold connection Fig. 27 – Water manifold sizes MANIFOLD 3” CONDENSER OUT EVAPORATOR IN (FOR EWWT) EVAPORATOR OUT (FOR EWHT) CONDENSER IN EVAPORATOR OUT (FOR EWWT) EVAPORATOR IN (FOR EWHT) [66.2 inches] [6.6 inches] 1682 mm 168 mm MANIFOLD 5”...
7.3.1 Motor mechanical installation In this chapter are reported the instructions to install the electric actuator on the shut-off valve. The motor kit consists of two main components: Motor Limit switches related to valve full opening/closing position indication. Fig. 29 – Mounting instructions for valve actuator Fig.
Fig. 31 – Mounting indications for valve actuator Correct installation 7.3.2 Valve actuator and Limit Switch electrical installation The installation of an expansion module in the electrical panel is mandatory for the electrical connection of the valve actuator. Fig. 32 – Wiring diagram for motor (left figure) and limit switches (right figure) Cables colour: S1=violet S2= red...
Fig. 33 – Cable adapters for evaporator shut off valve actuator and limit switches Fig. 34 – Cable adapters for condenser shut off valve actuator and limit switches Fig. 35 – Shut off valve actuator wiring diagram The electrical connection between the shut-off valve components and the junction cables is set out in table below. Cable from Motor Junction Cable Cable from electrical...
Fig. 38 – Electrical panel entry for evaporator and condenser shut off valve actuator cables Entry cable 7.3.3 Setting of Limit Switches trigger The procedure to set the trigger of the feedback switches of the valve is detailed below: Set the Unit Mode = Test. In Unit Manual Control drive the valve in the closed position 0%, wait for the closed feedback state.
Fig. 39 – Setting of limit switches trigger Connection of stacked units The connection of stacked units is possible thanks to “Stacked unit kit” accessory (see figure below). This accessory is mandatory for this modules configuration. Fig. 40 – Mounting instructions for stacked units Stacked units kit Connection of more unit-manifold systems together For the installation of more unit-manifold systems together, are possible two configurations:...
Fig. 41 – Mounting instructions for more unit-manifold systems together Pump module installation If pump module is installed, it is advisable to install the master module near to the pump module. Fig. 42 – Pump module installation EVAPORATOR IN CONDENSER IN PUMP MODULE 100 mm [3.94 inches]...
Handling of the Modules The packaging from the factory permits lifting with a suitable crane. Ensure straps are in good working condition and that th ey are rated for the weight of the machines. Spreader bars may be required for effective rigging and to avoid damage to the chiller modules. The system arrives fully charged with refrigerant.
Fig. 48 – Handling of pump module using for pallet truck TO BE REMOVED BEFORE INSTALLATION Minimum fork length needed: (OPTION 1) 1200 mm TO BE REMOVED BEFORE INSTALLATION (OPTION 2) Minimum fork length needed: 1050 mm Electrical installation of modules Unit modules can be electrically connected together through a power bar system.
Fig. 51 – Details of cables routing 7.8.1 Power bar system mechanical installation For a correct mechanical installation each power bar module has to be put on top of the proper unit module and fixed with 4 screws using the hexsert mounted on the lateral crossbeams (2 on each side). When the top panel of the cabinet is present (XR unit version), a part of the sheet needs to be cut to allow the fastening of the screws.
Fig. 53 – Connection of the power bar modules together 7.8.2 Power bar system electrical connection The electrical connection of more modules of the power bar system is possible thanks to specific connection clamps. These clamps allow the connection of the bars of each module. Fig.
Fig. 55 – Detail of the fuses and of the box for cables routing of the power bar module NH FUSE SWITCH-DISCONNECTOR BUSBAR L1 BUSBAR L2 BUSBAR L3 BUSBAR PE The electrical connection of the units to the power bar system is done through a multipolar cable, 3 phases with ground. The three phases shall be connected to the fuse holder, equipped with each module, and the ground (PE) shall be connected to the ground bar (Busbar PE).
Fig. 57 – Detail of electrical connection for any other unit module UNIT MODULE ELECTRICITY SUPPLY NH FUSE SWITCH DISCONNECTOR BUSBAR PE BUSBAR L3 BUSBAR L2 BUSBAR L1 Refer to the specific wiring diagram for the unit purchased. The wiring diagram may not be on the unit or it could be lost, in that case please contact your manufacturer representative, who will send you a copy.
Fuses replacement for power bar system Before replacing the fuse, make sure you have cut off the power supply to the duct. The fuses shown in figure 46 electrically protect, by blowing, the single unit in case of overcurrent. When this event occur, the replacement of the fuses is needed.
7.9.1 M/S (MUSE) probes installation In case of modular application with manifold modules, the system is managed by standard Daikin master/slave (M/S) serial connection called MUSE. The MUSE can control the units’ operation thanks to two temperature probes (included in manifold module): •...
• Evaporator inlet temperature probe (only when pump module is supplied) • Evaporator outlet temperature probe (only when pump module is supplied) • Condenser inlet temperature probe (only when pump module is supplied) • Condenser outlet temperature probe (only when pump module is supplied) In the following figure are shown the positions of the manifold probes.
Fig. 60 – Details of probes positioning on the pipes CONDESNSER OUTLET CONDESNSER PIPE CONNECTION PIPE Common condenser leaving temperature probe VICTAULIC CONNECTION EVAPORATOR OUTLET PIPE PUMP MODULE Common evaporator leaving EVAPORATOR temperature probe CONNECTION PIPE 7.9.2 Unit modules M/S (MUSE) connection The MUSE system uses the Modbus communication protocol to control and coordinate all the units .
OPERATOR'S REPONSIBILITIES It is essential that the user is appropriately trained and becomes familiar with the system before operating the unit. In addition to reading this manual, the user must study the microprocessor operating manual and the wiring diagram in order to understand st art- up sequence, operation, shutdown sequence and operation of all the safety devices.
MAINTENANCE This unit must be maintained by qualified technicians. Before beginning any work on the system the personnel shall assure tha t all security precautions have been taken. Personnel working on the electrical or the refrigeration components must be authorized, trained and fully qualified. Maintenance and repair requiring the assistance of other skilled personnel should be carried out under the supervision of the person competent in the use of flammable refrigerants.
Table 7 - Standard Routine Maintenance Plan Routine maintenance programme (Note 2) Weekly Monthly Yearly (Note 1) (Note 2) General Reading of operating data (Note 3) Visual inspection of machine for any damage and/or loosening Verification of thermal insulation integrity Clean and paint where necessary Analysis of water (Note 5) Electrical:...
Open the isolation and/or shut off valves Before start-up, make sure that all the isolation and/or switch off valves are completely open. Note This list must be completed and sent to the local Daikin Service office at least two weeks before the start date. D-EIMHP01702-23_00EN- 66/72...
Fig. 64 – Wiring for connecting the unit at the place of installation. Type signal description Function Page Column Symbol Digital Output EVAP. WATER PUMP 1 Max load 2A-230Vac External power supply Digital Output EVAP. WATER PUMP 1 Max load 2A-230Vac External power supply Digital Output COND.
11 DISCHARGE OF THE REFRIGERANT FROM THE SAFETY VALVES Avoid discharging refrigerant from the safety valves at the installation site. If necessary, it is possible to connect them t o discharge pipes, the transversal section and length of which must comply with the national laws and the European directives. D-EIMHP01702-23_00EN- 68/72...
12 PERIODIC OBLIGATORY CHECKS AND STARTING UP OFTHE GROUPS (UNITS) These Groups (units) are included in category III of the classification established by the European Directive PED 2014/68/EU. For Groups belonging to this category,some national laws require a periodic check by an authorized organization. Please verif y and contact these organizations to also request authorization to start it up.
13 IMPORTANT INFORMATION ON THE REFRIGERANT USED This product contains fluorinated greenhouse gases. Do not vent gases into the atmosphere. Refrigerant type: GWP Value (global warming potential): Factory and Field charged units instructions The refrigerant system is charged with fluorinated greenhouse gases and the refrigerant charge is impressed on the plate, shown below, which is applied inside the electrical panel.
14 PERIODIC CHECKS AND COMMISSIONING OF PRESSURE EQUIPMENT The units are included in category III and IV of the classification established by the European Directive 2014/68/EU (PED). For chillers belonging to these categories, some local regulations require a periodic inspection by an authorized person. Please check wit h your local requirements.
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The present publication is drawn up only for technical support and it does not constitute a binding commitment for Daikin Applied Europe S.p.A.. Its content has been written by Daikin Applied Europe S.p.A. to the best of its knowledge. No explicit or implied warranty is given for the completeness, accuracy, reliability of its contents.
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