H108
The H108 temperature controller is projected for use in solar heating systems. Operation is based on the temperature difference between the collector and the reservoir, activating the circulation pump to keep this differential within the configured limit.
User guide
Ideal for solar heating systems for swimming pools
Flush mounting in a 60mm round hole
Surface mounting using screws
Dual-voltage, 85 or 300 V
The H108 temperature controller is projected for use in solar heating systems. Operation is based on the temperature difference between the collector and the reservoir, activating the circulation pump to keep this differential within the configured limit. H108 has a visual alarm function and can be surface or flush mounted with screws or 60mm round hole.
Power supply voltage: 110 Vac, 220 Vac or (85 to 300) Vac;
Rated power: 2 VA;
Relay outputs:
Support: 1/2 HP (10 A, 250 Vac);
Pump: ½ HP (10 A, 250 Vac);
Measurement range: -50 to +100 °C;
Resolution: 0,1 ºC from -10 to +100 ºC / 1,0 ºC from -50 to -10 ºC;
Operating conditions: 0 to 40 °C and 10 to 90 %RH (noncondensing);
Front panel: 73 x 73 x 50 mm
Protection index: Front panel (IP30); NTC Sensor (IP68);
NTC sensor: Ø6 mm / L=15 mm (sensor); Standard length 2,5 m (wiring).
Pump activation
H108 activates the water pump automatically based on the setup temperature difference between collector and reservoir, ensuring optimal use of the heating process.
Surface mounting
The H108 can be installed on the surface using screws. This ensures installation versatility wherever it is suitable.
60mm hole Mounting
The H108 can be installed in a hole with a diameter of 60 mm. Simply use the front thread to ensure a quick and easy installation.
Frequently asked questions
Yes, the H108 controller uses an NTC-type sensor, which allows cable splicing. This is typically done when it is necessary to extend the sensor cable beyond the standard factory length (1.5 m). It is important that splices are properly made, well insulated, and use suitable conductors. After handling the sensor cable, it is essential to calibrate the temperature sensor using parameter r4.
To adjust the setpoint on the H108 controller, simply press and hold the SET button and use the up and down keys to make the desired adjustment.
The factory default temperature differential of the H108 controller is set for general use, but each system may have a specific ideal setting depending on its requirements. It is recommended to test the system or consult a qualified professional to determine the most suitable temperature differential for your application.