1. Nhanganyaya
Thank you for choosing the Thermex HIT 10-U Pro Under-Sink Water Heater. This compact and efficient 10-liter, 1500W electric water heater is designed for reliable hot water supply in your kitchen or similar applications. It features a pressure-resistant boiler and an integrated inlet combination valve for safety and ease of installation. Please read this manual carefully before installation and operation to ensure proper use and longevity of your appliance.

Mufananidzo 1: Mberi view of the Thermex HIT 10-U Pro water heater, showing the control dial and indicator lights.
2. Mirayiridzo Yekuchengetedza
Always observe the following safety precautions to reduce the risk of fire, electric shock, injury, or damage to the appliance.
- Verenga mirairo yese usati washandisa mudziyo.
- This appliance must be installed by a qualified professional in accordance with local regulations.
- Ita shuwa kuti magetsi emagetsi awandatage inoenderana nechiratidzo chekuongorora chiri pamudziyo (230V).
- Usashandise chitofu chemvura kana tambo yemagetsi kana chivhariso chakakuvara.
- Usavhare vhavha yekumanikidza.
- Ita shuwa kuti mudziyo wakadzikwa zvakanaka.
- Usanyudze mudziyo mumvura kana zvimwe zvinwiwa.
- Chengeta vana nevanhu vasina mvumo kure nemudziyo panguva yekushanda.
- Bvisa magetsi usati waita chero kugadzirisa kana kuchenesa.
- The water heater is designed for indoor use only.
3. Package Zviri mukati
Tarisa uone kuti zvese zviriko uye hazvina kukuvara pakuburitsa.
- Thermex HIT 10-U Pro Water Heater unit
- Inlet combination valve (pressure limiting valve and non-return valve)
- Kukwira brakeki
- Screws uye mapulagi emadziro
- Mushandisi Chinyorwa (gwaro iri)

Mufananidzo 2: Included installation components: mounting bracket, screws, and the inlet combination valve.
4. Kuiswa
The Thermex HIT 10-U Pro is designed for under-sink installation with connections facing upwards. Installation should be performed by a qualified professional.
4.1 Kuisa iyo Unit
- Choose a suitable location under the sink, ensuring sufficient space for maintenance and connections.
- Mark the drilling points for the mounting bracket on the wall.
- Dhobora maburi woisa mapulagi emadziro.
- Securely fasten the mounting bracket to the wall using the provided screws.
- Carefully hang the water heater unit onto the mounting bracket.
4.2 Mvura yekubatanidza
- Connect the cold water inlet (blue marking) to the domestic cold water supply using 1/2" fittings.
- Install the provided inlet combination valve on the cold water inlet. This valve acts as both a pressure limiting valve and a non-return valve, essential for safe operation.
- Connect the hot water outlet (red marking) to the hot water tap using 1/2" fittings.
- Ita shuwa kuti zvese zvinongedzo zvakasimba uye hazvibvisi.
- Fill the water heater with water by opening the hot water tap until water flows freely, indicating the tank is full.
4.3 Electrical Connection
- The appliance comes with a 1.5m power cable.
- Connect the power plug to a grounded 230V electrical outlet.
- Ensure the electrical circuit is protected by a residual current device (RCD).

Mufananidzo 3: Side view of the water heater, illustrating the compact design and connection points.
5. Kushanda
5.1 Kutanga Kutanga
- After installation and filling the tank with water, plug the appliance into the power outlet.
- The "Heating" indicator light on the front panel will illuminate, indicating that the water heater is active and heating the water.
5.2 Kudzora Tembiricha
- The water heater features a control dial on the front panel.
- Rotate the dial to adjust the desired water temperature. The "ECO" setting provides an energy-efficient temperature.
- The "Heating" indicator light will turn off once the set temperature is reached and will cycle on and off to maintain the temperature.
5.3 Nguva yekupisa
The approximate preheating time for the 10-liter tank is 25 minutes to reach the set temperature from cold.
6. Kuchengeta
Regular maintenance ensures optimal performance and extends the lifespan of your water heater. Always disconnect the power supply before any maintenance.
- Descaling: Depending on water hardness, periodic descaling of the heating element may be necessary. This should be performed by a qualified technician.
- Inlet Valve Check: Periodically check the inlet combination valve for any blockages or leaks. Ensure the pressure relief function is not obstructed.
- Kuchenesa: Geza kunze kweyuniti nekanyoro, damp jira. Usashandise abrasive cleaners kana solvents.
- Leak Inspection: Regularly inspect all water connections for any signs of leaks.
7. Kugadzirisa matambudziko
Usati wataura nerutsigiro rwevatengi, tarisa matambudziko anotevera anowanzo itika uye mhinduro dzacho.
| Dambudziko | Zvinogona Kukonzera | Solution |
|---|---|---|
| Hapana mvura inopisa | No power supply; Thermostat set too low; Heating element failure. | Check power connection and circuit breaker; Adjust thermostat setting; Contact a qualified technician. |
| Mvura isingapise zvakakwana | Thermostat set too low; High hot water demand; Sediment buildup. | Increase thermostat setting; Allow more time for reheating; Consider descaling (professional service). |
| Kubuda kwemvura | Loose connections; Faulty inlet valve; Tank damage. | Tighten connections; Inspect and replace inlet valve if necessary; Contact a qualified technician for tank inspection. |
| Loud noises from unit | Kuungana kwetsvina mutangi. | Professional descaling recommended. |
8. Zvinyorwa zveUnyanzvi
| Feature | Detail |
|---|---|
| Model | HIT 10-U Pro |
| Capacity | 10 litres |
| Simba | 1500 Watts |
| Voltage | 230 Volts |
| Dimensions (L x W x H) | 40 x 36.6 x 30.4 cm |
| Huremu (husina) | 7 makirogiramu |
| Preheating Time (approx.) | 25 kwemaminitsi |
| Kudzivirirwa Kwemagetsi | IPX4 |
| Max Pressure | 6 Kilopascal |
| Connection Type | 1/2" fittings |
| Kirasi Yekuita Nesimba | B |
| Kushandiswa Kwemagetsi Kwegore | 559 kWh/gore |
| Simba reRuzha (mukati meimba) | 15 dB |

Mufananidzo 4: Energy label for the Thermex HIT 10-U Pro, showing efficiency class B and annual consumption.

Mufananidzo 5: Product Fiche providing detailed technical information and compliance data. For more details, refer to the EPREL database (ID 1023329).
9. Warranty uye Tsigiro
Thermex provides a warranty for this product:
- Mudziyo 2 makore waranti
- Bhaira: 5 makore waranti
For technical support, service, or warranty claims, please contact Thermex customer service:
- Websaiti: thermex.lv
- Email: ankir@thermex.com
- Runhare: +371 29165629
- Kero: Krustpils str. 31, 1073 Riga, Lettland
Please have your model number (HIT 10-U Pro) and purchase date available when contacting support.