6. Ensure that the sensor cables are not in contact with uninsulated pipes, and are kept
separate from other wiring and adequately clipped. If the sensor cable is not long
enough, use a connecting box and 2 core cable (heat resistant if near any hot pipes). The
cable should not look the same as mains cable.
7. The solar expansion vessel should be pre-pressurised to 2.5 bar.
8. Fill the system with the Tyfocor LS glycol solution, without any dilution, through the filling
loop double check valve, using Solar Filling Pump set with filter(consult Atmos). Flush
through first and refill. Check very carefully for leaks.
9. Pump speed set to the highest.
10. On commissioning, bleed the manual air vents.
11. Solar system pressurised at 3 to 4 bar.
12. Solar system controller operation: System arrangement 1 selected. SMX (store max
temp) set at 60 deg C or 65 deg C (Note: A TMV valve should normally be fitted to the
hot water supply). Check that the controller is left in AUTO (ie HND1 is in auto).
13. Pump operation checked and flow rate set to 4 litres/min (based on 2 panels).
5.2
Operation of the Controller (Resol type BS/3)
Provides simple control of solar circulating pump based on adjustable temperature
differential on (
DTO
) and temperature differential off (
DTF
), measured with sensors fitted to
solar panel and hot water cylinder.
The solar pump is switched on when the difference in temperature at the solar panel sensor
S1 (indicated by channel
COL
at the controller) and the hot water sensor S2 (indicated by
channel
TST
at the controller) is larger than the given channel
DTO
. The solar pump is
switched off when the difference in temperature between S1 and S2
is smaller than the given
channel
DTF
.
If the temperature rises above the maximum storage temperature channel
SMX
, the solar
pump switches off. If a temperature of above 140°C (factory setting, but adjustable channel
EM
at the controller) is reached at the solar panel sensor, the solar pump is switched off.
WARNING
1.
The controller is electrically operated. Improper installation or attempted repair can cause
a life-threatening electric shock hazard. Only adequately qualified specialist personnel
must perform installation and commissioning. Repairs are to be carried out only by the
manufacturer.
2.
Switch off the power supply to the controller before opening the housing.
3.
The controller is an electronic device for use in conjunction with a hydraulic circuit in
accordance with the manufacturer's specifications. The device is not to be used for any
other purpose.
4.
It may be necessary to electrically suppress strongly inductive loads in the vicinity of the
controller (contactors, solenoid-operated valves, etc.).
5.3
Inspection & Maintenance
1.
Regularly check that there are no red flashing LED’s at the controller.
2.
Regularly check that the system pressure at the pressure gauge at the pumping station is
approx 3 to 4 bar. Fluctuations are normal, but if the gauge shows low pressure
constantly, then contact your Installer/Service engineer. More fluid must be pumped into
the system, but only use the same type of glycol fluid as installed.
3.
It is advisable to test and check the glycol fluid every 3 years, which must be carried out
by your Installer/Service engineer.
Twin Coil Sealed Solar System Ins Man
Page 7 of 15
