INSTALLATION MANUAL Unit for air to water heat pump system EDLQ036BA6VJU1 EDLQ048BA6VJU1 EDLQ054BA6VJU1 EBLQ036BA6VJU1 EBLQ048BA6VJU1 EBLQ054BA6VJU1 Installation manual Unit for air to water heat pump system English Manuel d'installation Unité pour système de pompe à chaleur air à eau Français Manual de instalación Unidad para bomba de calor de aire-agua Español
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EDLQ036BA6VJU1 EDLQ048BA6VJU1 EDLQ054BA6VJU1 EBLQ036BA6VJU1 EBLQ048BA6VJU1 EBLQ054BA6VJU1 CONTENTS Unit for air to water heat pump system Installation manual Page Introduction........................................................................................ 1 General information ................................................................................... 1 Scope of this manual ................................................................................. 2 Model identification .........
Both versions are delivered with an integrated backup heater for additional heating capacity during cold outdoor temperatures. The backup heater also serves as a backup in case of malfunctioning of the unit and for freeze protection of the outside water piping during winter time. The backup heater factory set capacity is 6 kW, however, depending on the installation, the installer can limit the backup heater capacity to 3 kW.
SAFETY CONSIDERATIONS ■ The precautions listed here are divided into the following two types. Both cover very important topics, so be sure to follow them carefully. DANGER Insufficient capacity of the power supply circuit or improper electrical construction may lead to electric shocks or fire. Be sure to install a ground fault circuit interrupter according to local laws and regulations. Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
■ Where there is machinery which emits electromagnetic waves. Electromagnetic waves may disturb the control system, and cause malfunction of the equipment. SELECTING ■ Where flammable gases may leak, where carbon fibre or ignitable dust is suspended in the air or where volatile flammables, such as thinner or gasoline, are handled. Such gases may cause a fire. ■ Where the air contains high levels of salt such as that near the ocean. ■ Where voltage fluctuates a lot, such as that in factories.
■ Set the outlet side at a right angle to the direction of the wind. PRECAUTIONS ■ Strong wind ■ Blown air Strong wind ■ ON INSTALLATION Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise after installation. In accordance with the foundation drawing in the figure, fix the unit securely by means of the foundation bolts. (Prepare four sets of 1/2 inch (M12) foundation bolts, nuts and washers each which are available on the market.
(C) In case of multiple-row installation (for roof top use, etc.) Installation servicing space 1. In case of installing one unit per row. The numerical figures used in the figures represent the dimensions in mm.
T YPICAL APPLICATION EXAMPLES Application 2 The application examples given below are for illustration purposes only. Application 1 Space heating only application without room thermostat connected to the unit. The temperature in each room is controlled by a valve on each water circuit. Domestic hot water is provided through the domestic hot water tank which is connected to the unit. Space heating only application with a room thermostat connected to the unit.
Domestic water heating Pump operation and space heating and cooling When domestic water heating mode is enabled (either manually by the user, or automatically through a schedule timer) the target domestic hot water temperature will be achieved by a combination of the heat exchanger coil and the electrical booster heater. According to the season, the customer will select cooling or heating on the room thermostat (T). This selection is not possible by operating the user interface.
Pump operation CAUTION ■ Be sure that the boiler and the integration of the boiler in the system is in accordance with relevant local laws and regulations. Always install a 3-way valve, even if no domestic hot ■ water tank is installed. This to ensure that the freeze protection function (see "[4-04] Freeze protection function" on page 28) can operate when the boiler is active.
Field wiring configuration A NOTE ■ L H Com E(D/B)* X2M E(D/B)*/auto / Boiler Boiler thermostat input 1234 XY A K1A K1A K2A K2A Configuration B Make sure that the bivalent hysteresis [C-04] has sufficient differential to avoid frequent changeover between the E(D/B)* unit and the boiler. As the outdoor temperature is measured via the outdoor unit, air thermistor make sure to install the outdoor unit in the shade, so that it is not influenced by the sun.
When the room temperature of both zones is above the thermostat set point, the outdoor unit and pump will stop operating. Application 6 Space heating with room thermostat application through floor heating loops and fan coil units. The floor heating loops and fan coil units require different operating water temperatures. ■ NOTE The floor heating loops require a lower water temperature in heating mode compared to fan coil units.
13. Manometer The manometer allows readout of the water pressure in the water circuit. 14. Flow switch The flow switch checks the flow in the water circuit and protects the heat exchanger against freezing and the pump against damage. Main components Hydraulic compartment (door 3) 1 18 15. Pump The pump circulates the water in the water circuit. 17 16 2 13 15 2 3 8 4 5 16. Backup heater thermal protector The backup heater is equipped with a thermal protector.
Switch box main components (door 2) A B 13. X9A socket The X9A socket receives the thermistor connector (only for installations with domestic hot water tank). 14. Pump fuse FU2 (in line fuse) C D 15. Pump relay K4M A C 24 9 9 8 K4M 15 K2A 3 1 26 B 14 10 16 12 11 17 30 1 5 4 X9A FU2 FU1 29 28 2 13 X13A SS2 26. K2A relay for 2-way valve K4A K3A 28. K4A relay for room thermostat (optional) 2. 3. 4. 5. 6. 7. 27. K3A relay for room thermostat (optional) 29.
Checking the water circuit NOTE The units are equipped with a water inlet and water outlet for connection to a water circuit. This circuit must be provided by a licensed technician and must comply with local laws and regulations. Example The unit is only to be used in a closed water system. Application in an open water circuit can lead to excessive corrosion of the water piping.
Checking the maximum allowed water volume Connecting the water circuit To determine the maximum allowed water volume in the entire circuit, proceed as follows: Water connections must be made in accordance with the outlook diagram delivered with the unit, respecting the water in- and outlet. 1 Determine for the calculated pre-pressure (Pg) the corresponding maximum water volume using the graph below. 2 Check that the total water volume in the entire water circuit is lower than this value.
Depending on the expected lowest outdoor temperature, make sure the water system is filled with a weight concentration of glycol as mentioned in the table below. Minimum outdoor temperature Charging water 1 Connect the water supply to a drain and fill valve (see "Main components" on page 12). 2 Make sure the automatic air purge valve is open (at least 2 turns). 3 Fill with water until the manometer indicates a pressure of approximately 29 psi (2.0 bar).
Overview Field wiring WARNING ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ The illustration below gives an overview of the required field wiring between several parts of the installation. Refer also to "Typical application examples" on page 7. A main switch or other means for disconnection, having a contact separation in all poles, must be incorporated in the fixed wiring in accordance with relevant local laws and regulations. D I 4 Switch off the power supply before making any connections. Use only copper wires.
CAUTION Door 2 electrical parts of the hydraulic compartment A11P................ Main PCB Select all cables and wire sizes in accordance with relevant local laws and regulations. A12P................ User interface PCB (remote controller) WARNING After finishing the electric work, confirm that each electric part and terminal inside the electric parts box is connected securely. Internal wiring - Parts table A3P.................. Thermostat (EKRTW)(PC=Power Circuit) A4P..................
Field wiring guidelines ■ Most field wiring on 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 (door 2). Specifications of standard wiring components Door 1: compressor compartment and electrical parts: X1M 2~ 60 Hz 208 V/230 V WARNING Switch off all power supply – i.e. unit power supply and backup heater and domestic hot water tank power supply (if applicable) – before removing the switch box service panel.
Procedure 1 Connection of the thermostat cable Using the appropriate cable, connect the power circuit to the main circuit breaker as shown on the wiring diagram and in figure 2. Connection of the thermostat cable depends on the application. 2 Connect the ground conductor (yellow/green) to the grounding screw on the X1M terminal.
Connection to a benefit kWh rate power supply Electricity companies throughout the world work hard to provide reliable electric service at competitive prices and are often authorized to bill clients at benefit rates. E.g. time-of-use rates, seasonal rates, Wärmepumpentarif in Germany and Austria, ... . This equipment allows for connection to such benefit rate power supply delivery systems.
■ ■ Benefit kWh rate power supplies that completely shut power supply like illustrated above as types 2 and 3 are not allowed for this application because of the water freeze prevention that would not be powered. 3 Wire the unit. 6 1 1616 P2 P1 4 Installation of the digital controller The unit is equipped with a digital controller offering a user-friendly way to set up, use and maintain the unit. Before operating the controller, follow this installation procedure.
START-UP AND CONFIGURATION The unit should be configured by the installer to match the installation environment (outdoor climate, installed options, etc.) and user expertise. It is important that all information in this chapter is read sequentially by the installer and that the system is configured as applicable. DIP switch settings overview The following table summarizes the required configuration and thermostat wiring at the terminal block in the switch box. Pump operation is listed in the third column.
The following table summarizes the required configuration and wiring at the terminal block (X2M: 1, 2, 4) in the switch box. Pump operation is listed in the third column.
Powering up the unit Field settings When power supply to the unit is turned on, "88" is displayed on the user interface during its initialisation, which might take up to 30 seconds. During this process the user interface cannot be operated. The unit shall be configured by the installer to match the installation environment (outdoor climate, installed options, etc.) and user demand. Thereto, a number of so called field settings are available.
[1] Weather dependent set point (heating operation only) NOTE ■ ■ Before shipping, the set values have been set as shown under "Field settings table" on page 35. When exiting FIELD SET MODE, "88" may be displayed on the user interface LCD while the unit initialises itself. Detailed description [0] User permission level If required, certain user interface buttons can be made unavailable for the user. Three permission levels are defined (see the table below).
[2] Disinfection function [4] Backup heater operation and space heating off temperature Applies only to installations with a domestic hot water tank. Backup heater operation The disinfection function disinfects the domestic hot water tank by periodically heating the domestic water to a specific temperature. The operation of the backup heater can be enabled or disabled, or it can be disabled depending on operation of the booster heater.
Booster heater operation Applies only to installations with a domestic hot water tank. The operation of the booster heater can be enabled or limited depending on outdoor temperature (TA), domestic hot water temperature (TDHW ) or operation mode of the heat pump. ■ [4-03] Booster heater operation: defines whether the optional booster heater operation is enabled (1) or has certain limitations (0/2/3).
■ [5-04] Set point correction for domestic hot water temperature: set point correction for the desired domestic hot water temperature, to be applied at low outdoor temperature when space heating priority is enabled. The corrected (higher) set point will make sure that the total heat capacity of the water in the tank remains approximately unchanged, by compensating for the colder bottom water layer of the tank (because the heat exchanger coil is not operational) with a warmer top layer.
[7] DT for booster heater and dual set point control WARNING DT for booster heater Be aware that the domestic hot water temperature will be automatically increased (always) with the value selected in field setting [7-00] compare to the user set point for domestic hot water (TU). Refer to field setting [7-00] and the operation manual to select preferable set point. Applies only to installations with a domestic hot water tank.
■ NOTE ■ ■ ■ ■ The first set point heating/cooling is the set point selected on the user interface. - In heating mode the first set point can be a fixed value or weather dependent. - In cooling mode the first set point is always a fixed value. The second set point heating [7-03] should be linked to the heat emitters which requires the highest set point in heating mode. Example: fan coil unit.
■ [8-03] Booster heater delay time: specifies the start-up time delay of the booster heater operation when heat pump domestic water heating mode is active. ■ ■ ■ When heat pump is active in domestic water heating mode, the delay time of booster heater is [8-03]. When heat pump is not active in domestic water heating mode, the delay time is 20 min.
[A] Quiet mode This field setting allows to select the desired quiet mode. Two quiet modes are available: quiet mode A and quiet mode B. ■ [C-04] Bivalent hysteresis: defines the temperature difference between bivalent ON temperature and bivalent OFF temperature. Permission signal X1–X2 (EKRP1HB) In quiet mode A, priority is given to the unit operating quietly under all circumstances. Fan and compressor speed (and thus performance) will be limited to a certain percentage of the speed at normal operation.
■ [D-01] Unit connection to benefit kWh rate power supply: Defines whether or not the outdoor unit is connected to a benefit kWh rate power supply. If [D-01]=0, the unit is connected to a normal power supply (default value). If [D-01]=1 or 2, the unit is connected to a benefit kWh rate power supply. In this case the wiring requires specific installation like explained in "Connection to a benefit kWh rate power supply" on page 21.
Field settings table Temperature values displayed on the digital controller (user interface) are in °C. Temperature values in °C are between brackets. Conversion from °C to °F is for information only.
First code 9 A b C D E F Second code Installer setting at variance with default value Setting name Date Value Date Value Default value Range Step Unit 131 (55) 77 (25) 71.6 (22) 41 (5) 1.8 (1) 98.6~131 (37~55) 59~98.6 (15~37) 64.4~71.6 (18~22) 41~64.4 (5~18) 1.8~7.2 (1~4) 1.8 (1) 1.8 (1) 1.8 (1) 1.8 (1) 1.
TEST RUN AND FINAL CHECK 3 The test run operation will end automatically after 30 minutes or when reaching the set temperature. The test run operation can be stopped manually by pressing the z button once. If there are misconnections or malfunctions, an error code will be displayed on the user interface. Otherwise, the user interface will return to normal operation. 4 To resolve the error codes, see "Error codes" on page 39.
Backup heater vessel insulation cover 5 General symptoms Check that the backup heater insulation cover is fastened tightly around the backup heater vessel. Domestic hot water tank pressure relief valve (field supply) 6 Applies only to installations with a domestic hot water tank. Check for correct operation of the pressure relief valve on the domestic hot water tank.
