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HOT WATER HEAT PUMP HEATER
INSTALLATION & OWNER'S MANUAL
Warning notices: Before using this product, please read this manual carefully and keep it for
future reference.
The design and specifications are subject to change without prior notice for product improve-
ment.
Consult with your dealer or manufacturer for details.
The drawing above is just for reference. Please take the appearance of the actual product as
the standard.
This installation manual needs to be used in conjunction with the safety manual.
MELORIA 190 S
MELORIA 300 S
FLOOR DOMESTIC
EN
Translation of the original
instructions (in Italian)
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Summary of Contents for Fondital MELORIA 190 S
- Page 1 MELORIA 190 S MELORIA 300 S FLOOR DOMESTIC HOT WATER HEAT PUMP HEATER INSTALLATION & OWNER'S MANUAL Translation of the original instructions (in Italian) Warning notices: Before using this product, please read this manual carefully and keep it for future reference.
- Page 2 THANK YOU LETTER Thank you for choosing Fondital! Before using your new Fondital product, please read this manual thoroughly to ensure that you know how to operate the features and functions that your new appliance offers in a safe way.
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Page 3: Table Of Contents
PRODUCT DATA PLATE ........... . PRODUCT INFORMATION . -
Page 4: Product Data Plate
1. PRODUCT DATA PLATE Specific and main product data can be found on the label attached to the appliance. SCALDACQUA POMPA DI CALORE HEAT PUMP WATER HEATER Modello Model Alimentazione Power Supply Potenza termica Hea�ng capacity Potenza nominale in ingresso Rated input Potenza nominale ingresso resistenza ele�rica Electric heater rated input... -
Page 5: Safety Precautions
SAFETY PRECAUTIONS Read the instructions and warnings in this manual carefully, they contain important information regarding safe installation, use and maintenance. Incorrect installation due to ignoring instructions can cause serious damage or injury. The seriousness of potential damage or injuries is classified as either a WARNING or CAUTION. CAUTION: The signal word indicates a hazard with a low degree of risk which, if not avoided, may result in minor or moderate injury. - Page 6 WARNING • This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capa- bilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved.
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Page 7: Installation Warning
• Any routine or extraordinary maintenance operations must be carried out with the machine stationary, without power supply. • The plastic cover can only be removed by qualified operators. • Do not put your hands or introduce screwdrivers, wrenches or other tools on moving parts. •... - Page 8 Wiring • The wiring must be performed by professional technicians in accordance with national wiring regulations and the circuit diagram. • The unit must be earthed effectively. A creepage breaker must be installed in the power supply. • Before installation, check whether the user’s power supply meets the electrical installation requirements of unit (including reliable grounding, leakage, and wire diameter electrical load, etc.).
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Page 9: Operation Warning
OPERATION WARNING • The earthing pole of socket must be grounded well, make sure that power supply socket and plug are dry enough and connected tightly. • How to check the power supply socket and plug are qualified? Turn on the power supply and keep the unit running for a half hour, then turn off the power supply and plug out, check whether the socket and plug are hot. -
Page 10: Operation Caution
OPERATION CAUTION • Do not remove, cover or deface any permanent instructions, labels, or the data label from either the outside of the unit or inside of unit panels. • It is normal that water drips from the overpressure safety device or from the EN 1487 safety unit when the appliance is heating. For this reason one must install a drain, open to the air, with a continuously downwards sloping pipe, in an area not subject to subzero temperatures. -
Page 11: Product Information
2. PRODUCT INFORMATION All the pictures in this manual are for explanation purpose only. They may be slightly different from the heat pump water heater you purchased (depending on the model). Please refer to the real sample instead of the picture of this manual. Content of packaging One way valve ×1 Filter ×1... -
Page 12: Structure
Structure When ordering spare parts, please provide: 1. Model, serial and product number. 2. Parts name. MELORIA 300 S MELORIA 190 S Junction box condensate drain PTR valve water outlet handle water inlet drain outlet air outlet air inlet display... - Page 13 The head’s structure rear cover junction box cover junction box compressor filter top cover fan assy evaporator electronic control box front cover CAUTION For your safety DO NOT attempt repair of electrical wiring, heating elements, heat pump or electronic controls. Refer repairs to qual- ified service personnel.
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Page 14: Dimension & Connections
R3/4” cold water inlet R3/4” PTR valve RC3/4” Solar outlet R3/4” Solar inlet R3/4” drain pipe NPT3/4” MELORIA 190 S hot water outlet Ø 160 1730mm cold water inlet solar inlet 1100mm solar outlet 395mm drain pipe 125mm 560mm... -
Page 15: Technical Features
Technical features MELORIA 190 S MELORIA 300 S Model UNIT GENERAL INFO Water tank capacity 181 L 270L Net weight 94 kg 132 kg Dimension 560×595×1730 mm 660×695×1895 mm Refrigerant R290 (0.15 kg) Running air inlet temperature -7~43°C (E-heater:-20~46°C) Max. hot water temperature (heat pump) 65°C... -
Page 16: Installation
3. INSTALLATION WARNING • The installation of the equipment must be carried out by qualified personnel; the installation must be carried out in accordance with national regulations and to all additional requirements of local authorities. • Do not use means to accelerate the defrosting process or for cleaning other than those recommended by the manufacturer.(IEC 60335-2-40 ANNEX DD.2) •... -
Page 17: Before Installation
Before installation 3.1.1 Location requirements • IMPORTANT! The unit must be installed indoor , it is not allowed to be installed outdoor without shelter. Avoid installation in direct sunlight. WARNING • In case of rain entering inside the unit, the component might be damaged or cause physical danger. •... - Page 18 » Place with strong electromagnetic waves . » Place with flammable gases or materials exist. » Place where acid or alkali gases evaporate. » Other aggressive or dirty environments. 3.1.2 Maintenance space requirements (unit: mm) MELORIA 190 S MELORIA 300 S 2200mm 2000mm 850mm 660mm...
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Page 19: Fixing Method
Fixing method CAUTION In order to prevent accidental fall, please fasten the water heater to the walls. Water heater fixing steps are as follows: 1. Take off the front decorative board. 2. Install the expansion bolts or wall dowels(not provided) in the wall. Select the appropiate dowels and bolts/screws for the material of the wall. -
Page 20: Hydraulic Connection
Hydraulic connection Integrated Components Heat pump Solar thermal coil Hot water outlet Solar coil Inlet Cold water inlet Solar coil outlet Solar water tank temperature sensor Additional Components Required Drainage outlet and valve Solar collectors Automatic thermostatic mixing device Expansion vessel Mechanical overtemperature protector for solar water Safety valve pumps... - Page 21 heat pump water heater unit domestic hot water water inlet water inlet Heat exchange coil hot water inlet from solar panel water return from solar panel drain thermostatic mixing valve mechanical thermostat circulating pump solar panel probe solar panel solar circuit expansion vessel solar circuit safety valve CAUTION •...
- Page 22 Technical requirements: • When the system is installed in a cold environment, the pipeline from the solar circuit to the storage tank should be insulated, and it is recommended to mix water and ethylene glycol to ensure anti freezing protection at low temperatures. If necessary, heating can be applied to the circulating water circuit.
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Page 23: Cold Water Connection
1. Cold water connection The spec of the water inlet thread is R3/4”(external thread). Use well-insulated pipes to connect the water inlet to the house's water supply. Install the one way valve (thread RC3/4”) provided in accessories to the inlet pipe to prevent water from flowing backwards. CAUTION •... - Page 24 CAUTION • In case of installation at a place where outside temperature below freezing point, insulation must be provided for all hydraulic components. • The handle of PTR valve should be pulled out once per half a year to make sure that there is no jam of the valve. Please beware of burn, beware of the hot water from the valve.
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Page 25: Air Duct Connection
Air duct connection The total pressure drop of ducts and accessories for air inlet and outlet has to be less than 80 Pa. It is strongly recommended to use rigid ducts and the recommended length of ducts has to be respected. The following table lists the corresponding pressure drops and equivalent lengths for different air ducts and accessories. -
Page 26: Typical Installation
3.4.1 Typical installation Different ways of air ducts connection Type 181L Maximum piping length L1+L2 270L (without filter) Different directions of air ducts connection Electrical connection CAUTION • The power supply should be an independent circuit with rated voltage. • Power supply circuit should be earthed. •... - Page 27 3.5.1 Specifications of Power Supply The recommended power cable model is H05RN-F. You can choose the power cable recommended in the following table such a minimum. The installed cable cross-section has to com- ply with comply with local electric standard. Description Value Power Supply...
- Page 28 NOTE • Additional cables need to be connected by professional personnel and connected to either PL and PN or SL and SN depending on the actual situation. • The cross-sectional area of Additional cables shall not be less than 1.0 mm •...
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Page 29: Installation Checklist
CAUTION • When wiring the power supply, please add additional insulation sheath at the place without rubber insulation layer. • This unit should be installed by a qualified professional electrician in accordance with the local regulations. The selection of cables and wires should be in accordance with local regulations requirements. -
Page 30: Use
4. USE Checklist before trial running • Correct installation of the system. • Correct connection of water/air piping and wiring. • Smooth condensate drainage and proper installation of all hydraulics. • Correct power supply. • No air in the water pipeline and all valves opened. •... -
Page 31: About Running
2. Start up After powered on, the display will light up. Display Operation • Press →the unit will be switch on→press to select the set temperature (38-70°C)→press →The unit will automat- ically select heat source and start to heat water to set temperature. •... - Page 32 • Temperature of room of installation range: 0°C~43°C. • Heat pump running inlet air temperature range: -7°C~43°C. • E-heater running inlet air temperature range: -20°C~46°C. Water temperature limits: ˚C Heat pump MELORIA 190 S E-heater Heat pump MELORIA 300 S 35 38 ˚C...
- Page 33 MELORIA 190 S Heat-up Time (h, water temperature 9 ~ 55°C) MODE INLET AIR TEMP.(°C) ECONOMY HYBRID E-HEATER 14,9 12,7 11,4 Highest efficiency Medium efficiency Highest consumption MELORIA 300 S Heat-up Time (h, water temperature 9 ~ 55°C) MODE INLET AIR TEMP.(°C)
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Page 34: Control Panel Explanation
Control panel explanation 4.4.1 Display explanation Area Icon Description will be lighted if screen is unlocked. It shows water temperature on normal; It shows setting temperature on setting process; It shows remaining vacation days on vacation mode; It shows unit setting/running parameters, error/protection code on query- Information ing. - Page 35 Area Icon Description It will be lighted when the disinfection process is active. E-heater: It will be lighted when e-heater is running, otherwise it will be off. NOTE: When the operating conditions are not met to turn on the E-heat- er, the corresponding icon will briefly light up and then goes off.
- Page 36 4.4.2 Button explanation NOTE The unit will conduct a self-test within 10 seconds of being powered on, and it is recommended that no operations be performed during this time. Any pressing of button is effective only under button and display unlocked state. When the operating conditions are not met to turn on this function, the corresponding icon on the wire controller lights up briefly and then turns off.
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Page 37: Power On/Off
Icon Description Daily timer setting: While setting the [on/off time], you can restore to the default value (displaying-.--) by pressing If there is a conflict between two time periods, settings of the later one will be valid, and the earlier one will be canceled and turn back to default values. -
Page 38: Child Lock
Icon Description CONFIRM If screen and buttons are unlocked, press it to upload setting parameters after setting any parameter. CHILD LOCK 1. In the main screen, long press the key combination for 2 seconds to enter the child lock state; 2. - Page 39 parameters unit Explenation Tank capacity Four-way valve status Version Host software version Version LCD panel software version Version "000" 0: One electric heater 1: Two electric heaters Last error code Previous 1 st error or protection code Previous 2 nd error or protection code Maintenance time Target Temp End sign...
- Page 40 To turn on /off the electrical heater. NOTE • In order to avoid to affect the effectiveness of the hot water heating process, we recommend users not to turn off the electrical heater. Long press for 3 seconds to enter engineering Press the up and down keys to operate mode and select F6 channel.
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Page 41: Use Your Appliance With The Nethome Plus App
Use Your Appliance with the NetHome Plus App • Ensure that your mobile phone is connected to the home wireless network, the 2.4GHz band wireless signal is enabled on your wireless router and you know the network password. • Turn on Bluetooth on your phone and the device must also be powered up. Step 1: Download NetHome Plus App CAUTION The following QR code is only available for downloading APP. - Page 42 Step 4: Choose Air Source Heat Pump Water Heater Step 5: Connected to the network Follow the instructions in the app to set up the Wireless connection.If the network connection fails, please refer to the App tips for operation.The actual UI design may look different from examples due to app updates.
- Page 43 Compliance We, hereby declare that this device is in compliance with the relevant provisions of RE Directive 2014/53/EU. Wireless module models: EU-SK110, US-SK110: FCC ID: 2ADQOMDNA23 IC: 12575A-MDNA23 BLE:2402-2480MHz, TX Power:<10dBm Wireless:2400-2483.5MHz, TX Power:<20dBm This device complies with Part 15 of the FCC Rules and it contains licence exempt transmitter(s) / receiver(s) that comply with Inno- vation, Science and Economic Development Canada’s licence-exempt RSS(s).
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Page 44: Wiring Diagrams
Wiring diagrams Fig. 1 Wiring diagram... -
Page 45: Smart Grid
Code Description Current transformer Zero sequence current transformer Evaporator temperature sensor Ambient temperature sensor Tank temperature sensor (upper) Tank temperature sensor (lower) Discharge temperature sensor Suction temperature sensor Electronic expansion valve XT1-3 Mid terminal base Solar temperature sensor Impressed current anode SMART GRID Operating behavior EVU/PV... -
Page 46: Trouble Shooting
5. TROUBLE SHOOTING Non-error tips Q: Why can’t compressor start immediately after setting? A: The unit will wait for 3 minutes to balance the pressure of system before starting compressor again. It's a self protection logic of unit. Q: Why dose the temperature shown on the display panel decreased sometimes while unit is running? A: When the upper tank temperature is much higher than the bottom part, upper part hot water will be mixed by the bottom cold water which is continually flow from inlet pipe so that will decrease the upper part temperature. -
Page 47: Error Code Shooting Table
Error code shooting table Display Malfunction Description Corrective Action Maybe the connection between LCD panel and PCB has EH0b Tank and LCD panel communication error. been loose or PCB has been broken. EH00 Machine working parameters are abnormal. Contact a qualified person to service the unit. Maybe the connection between fan and PCB has been EH03 DC fan fault. -
Page 48: Maintenance
6. MAINTENANCE GENERAL WARNING • Do not exceed the allowable amount of R290 refrigerant of 0.150 kg (MAXIMUM QUANTITY). • Refrigeant R290 is flammable and odorless. • Maintenance and repair must be carried out by qualified personnel possessing the appropriate tools and equipment. The training of qualified personnel must be certified by nationally recognized organizations. - Page 49 REFRIGERANT LEAK DETECTION WARNING • Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant leaks. A halide torch (or any other detector using a naked flame) shall not be used.(IEC 60335-2-40 ANNEX DD.8) •...
- Page 50 CAUTION Always turn off your Air-source Heat Pump Water Heater system and disconnect its power supply before cleaning or maintenance. • Check the connection between the power supply plug and socket and ground wiring regularly; • It is recommended to set a lower temperature if the outlet water volume is sufficient, to decrease the heat release, prevent scale and save energy.
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Page 51: Disposal And Recycling
7. DISPOSAL AND RECYCLING WARNING • Decommissioning and disposal operations must be carried out by qualified personnel in accordance with local and national regu- lations. • Good practice for safely recovering all refrigerants is recommended. • Prior to the task being carried out, an oil and refrigerant sample shall be taken in case analysis is required prior to re-use of recov- ered refrigerant. - Page 52 Important instructions for environment(European Disposal Guidelines) Compliance with the WEEE Directive and Disposing of the Waster Product: This product complies with EU WEEE Directive (2012/19/EU). This product bears a classification symbol for waster electrical and electronic equipment (WEEE). This symbol indicates that this product shall not be disposed with other household wastes at the end of its service life.
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- Page 56 Fax +39 0365 878 304 e-mail: info@fondital.it www.fondital.com The manufacturer reserves the right to modify his/her products as deemed necessary, without altering the basic characteristics of the products themselves. Uff. Pubblicità Fondital IST 03 J 117 - 03 | Marzo 2025 (03/2025)
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