SOLAR THX is an entry level 'fit and forget' pump controller using the difference in temperature principle to start and stop a circulating pump in a solar powered water heating system. It is an ideal replacement for old field units which may be operating erratically and generally uses the same sensors.
SOLAR THX works by continuously monitoring the solar collector and water tank until a preset temperature difference occurs. The pump then operates until both temperatures equalise. Pump 'on' is approx 5C to 6C difference, 'off' is approx 2.5C to 3C. Visual indication of pump is by red coloured LED
SOLAR THX can be free standing or permanently connected at a convenient location anywhere in the house. It is mains powered and requires no user intervention for reliable and continuous operation.
SOLAR THX may also be used as a basic alarm in traditional thermo-syphon (gravity) systems by highlighting pipe blockages or circulation inefficiencies
SOLAR THX uses all analogue circuitry with suppression included on switched circuits. It is constructed on a fibreglass PCB using top quality branded components and mounted in an ABS enclosure.
SOLAR THX uses a pair of (thermistor) sensors, double rated electrolytics and a massive 12 Amp rated relay for extra, extra long life. Low current consumption means the annual running cost is about 80p - much less than ½ pint of beer!
Differential Set-points: Preset: 5/6 degrees on 2/3 degrees off
Supply indication: Green LED.
Pump operation indicator: Red LED.
Manual pump operation: None.
Sensors: Thermistor(s) 20k (Note: supplied seperately)
Isolation: CE approved transformer
Warranty: 1 years parts replacement
For inside mounting only, for best results mount the product in a stable thermal environment free of draughts eg under-stairs cupboards. This product is designed to switch 230 ac central heating type pumps up to 250 Watts
Try to keep sensor cable runs away from 50Hz mains wiring