Introduction
These instructions for installation and use are intended for owners of saunas, heaters and control units, persons in charge of managing saunas, heaters and control units, and for electricians responsible for installing heaters and control units. Once the control unit is installed, these instructions are handed over to the owner of the sauna, heater and control unit, or to the person in charge of maintaining them. Congratulations on choosing a Harvia control unit!
Harvia Xenio Control Unit (CX170-U1, CX170-U1-15, CX170-U3, CX170-U3-15)
Purpose of Use: The control unit is meant for controlling the functions of an electric sauna heater. It is not to be used for any other purpose.
1. HARVIA XENIO
1.1. General
The Harvia Xenio control unit consists of a control panel, a power unit, and a sensor. The control unit regulates the sauna room temperature based on information from the sensor. The temperature sensor and overheat protector are in the sensor box. The temperature is sensed by an NTC thermistor, and there is a resettable overheat protector.
The control unit can be used to preset the start of the heater (pre-setting time).
1.2. Technical Data
Control Panel:
- Temperature adjustment range: 104–194 °F (40–90 °C).
- Pre-setting time adjustment range: 0–12 h.
- Lighting control: max. power 100 W, 120 V 1N~.
- Fan control: max. power 100 W, 120 V 1N~.
- Dimensions: 3.4" x 1.0" x 4.4" (85 mm x 24 mm x 110 mm).
Power Unit:
- Supply voltage: CX170-U1: 240 V 1N~, CX170-U1-15: 240 V 1N~, CX170-U3: 208 V 3N~, CX170-U3-15: 208 V 3N~.
- Max. load: CX170-U1: 12.5 kW/7 kW (240V 1N~), CX170-U1-15: 15 kW/10.5 kW (240V 1N~), CX170-U3: 10.5 kW/208V 3N~, CX170-U3-15: 15 kW/208V 3N~.
- Dimensions: 10.6" x 3.0" x 10.6" (270 mm x 75 mm x 270 mm).
1.3. Troubleshooting
If an error occurs, the control panel displays an error message "E (number)".
Error Messages:
| Description | Remedy/Solution |
|---|---|
| E1: Temperature sensor's measuring circuit broken. | Check red and yellow wires to the temperature sensor and their connections. |
| E2: Temperature sensor's measuring circuit short-circuited. | Check red and yellow wires to the temperature sensor and their connections. |
| E3: Overheat protector's measuring circuit broken. | Press the overheat protector's reset button (see section 3.4.). Check blue and white wires to the temperature sensor and their connections. |
| E9: Connection failure in the system. | Switch power off from the main switch. Check data cable, sensor cable/s and their connections. Switch power on. |
Note: The overheat protector can be reset by the user. All other maintenance must be done by professional personnel.
Status Messages:
- SAFE: Safety switch circuit is open. Remove object from safety switch.
- rESt: Pause time active.
- rc on: Remote control activated.
2. INSTRUCTIONS FOR USE
2.1. Using the Heater
WARNING! Before switching the heater on, ensure there is no object on top of or near the heater within the safety distance.
Start the heater by pressing the [I/O] button on the control panel. The display shows the set temperature and the set on time. The heating elements automatically turn off when the desired temperature is reached and cycle on/off to maintain it.
The heater turns off when the set time expires, the [I/O] button is pressed, or an error occurs. Settings for on-time, pre-setting time, and temperature unit (Fahrenheit/Celsius) are shown in figures 3 and 3a.
2.2. Using Accessories
Lighting and ventilation can be controlled separately.
2.2.1. Lighting
Sauna lighting (max. 100 W) can be controlled from the panel. Press the [light] button to switch lights on/off.
2.2.2. Ventilation
If a fan is installed, it can be connected to the control unit and controlled via the panel. Press the [fan] button to start/stop the fan.
2.3. Remote control
The control unit can be remotely controlled if equipped with a safety switch. The heater turns on if the safety switch circuit is closed. If open, "SAFE" is displayed.
Pause Time: A pause time prevents the heater from turning on if less than 6 hours have passed since the last shutdown. "rESt" is displayed during this period. Remote start is possible after the pause time elapses, indicated by "rc".
Memory for power failures: The control unit resumes operation if the remote switch remains ON.
Preset time: Remote control is not possible during preset delay time. After the delay, the heater can be turned off remotely.
2.4. Control panel lock
Press and hold the [heater] and [light] buttons for three seconds. "-CL-" is shown on the display. Panel lock can only be activated in standby mode and prevents remote start.
3. INSTRUCTIONS FOR INSTALLATION
Electrical connections must be made by an authorized, professional electrician according to regulations. The installer must provide the user with the manual and necessary training.
3.1. Installing the Control Panel
The control panel is splashproof and operates at low voltage. It can be installed in a washing/dressing room or living quarters. If installed in a sauna room, it must be at the minimum safety distance from the heater and no higher than one meter from the floor.
Installation Steps:
- Thread the data cable through the hole in the back cover.
- Fasten the back cover to a wall with screws.
- Push the data cable into the connector.
- Press the front cover into the back cover.
Diagram Description (Figure 4): Shows the control panel mounting process, indicating screw placement and cable routing. It also illustrates recommended placement relative to the heater and floor.
Conductor tubing is recommended for hidden cable routing. Installation embedded in the wall is recommended, away from splashes.
3.2. Installing the Power Unit
Install the power unit outside the sauna room, in a dry place with an ambient temperature above 32 °F (0 °C). Refer to Figure 5 for opening the cover and wall mounting.
Note: Do not embed the power unit into the wall, as this can cause excessive heating and damage.
Diagram Description (Figure 5): Illustrates how to open the power unit cover and mount it to a wall.
3.2.1. Electrical Connections
Refer to Figures 6a-6d and Tables 2a-2d for detailed electrical connections, wire sizes, and fuse specifications. Consult the selected heater model's Installation and Use manual for more details.
3.2.2. Power Unit Fuse Faults
Replace blown fuses with new ones of the same resistance. Fuse placement is shown in Figures 6a and 6b.
- Electronic unit fuse blown: Indicates a fault in the power unit, requiring service.
- Line U1, U2 fuse blown: Problem with lighting or fan. Check wiring and function.
- Line A1, A2 fuse blown: Problem with the heater's overheat protector circuit. Check the heater's safety contactor, overheat protector, and wiring.
3.3. Installing the Temperature Sensor
Floor-mounted heaters (Figure 7):
- Option 1: Mount sensor on the wall above the heater, along the vertical center line, 3 15/16" (100 mm) from the ceiling.
- Option 2: Mount sensor to the ceiling above the heater, 7 14/16" (200 mm) from the heater's vertical center line.
Wall-mounted heaters (Figure 8):
- Mount sensor on the wall above the heater, along the vertical center line, 3 15/16" (100 mm) from the ceiling.
Important: Do not install the sensor closer than 3'-3 3/8" (1000 mm) to an air vent, as airflow can cause inaccurate readings and lead to overheating. (See Figure 9).
Diagram Description (Figures 7 & 8): Illustrate the correct placement of the temperature sensor relative to floor-mounted and wall-mounted heaters, including specific distances (A min/max, D min).
Diagram Description (Figure 9): Shows the minimum distance required between the sensor and an air vent.
3.4. Resetting the Overheat Protector
The sensor box contains a temperature sensor and a resettable overheat protector. If the temperature becomes too high, the protector cuts off heater power. The protector can be reset.
Note: Determine the cause of the shutdown before pressing the reset button. (See Figure 10).
Diagram Description (Figure 10): Shows the overheat protector reset button.
4. SPARE PARTS
Use only parts approved by the manufacturer.
| Item | Description | Part Number |
|---|---|---|
| 1 | Control panel | WX384 |
| 2 | Data cable 5 m | WX311 |
| 3 | Data cable extension 10 m (optional) | WX313 |
| 4 | Temperature sensor | WX232 |
| 5 | Circuit board | WX361 |
| 6a | Contactor 30 A (CX170-U1, CX170-U3) | ZSK-778 |
| 6b | Contactor 45 A (CX170-U3-15, CX170-U1-15) | ZSL-940 |
GUARANTEE
Harvia provides a one-year guarantee for this control unit, starting from the date of purchase, covering manufacturing and material faults.
The guarantee includes replacement of faulty parts. Replacing parts does not extend the original guarantee period.
The guarantee excludes defects from normal wear and tear, improper installation, poor maintenance, failure to follow instructions, or product alterations. Improper use, delivery costs, or on-site repair costs are not covered.
If returned within five years, free repair may be offered, but spare parts may be charged if the one-year guarantee has expired.
The guarantee is void if installation/wiring is not performed by a certified electrician or authorized service representative. Installer's signature is required.
The guarantee is void if the information below is not filled out and returned within 15 days of purchase. It applies only to the first installation and original purchaser.
Harvia control unit model:
Model number:
Date of purchase:
Original purchaser:
Address:
Purchased from:
Date of electrical installation:
Signature of the installer:
