Rinnai 11
EVT DD Solar Pre Heat System Operation and Installation Manual
8. Fill the System
Ensuring the power supply to the pump is off; turn on a hot water outlet tap(s). Remove the screw from the
pump to allow air to bleed out. Open the stop cock in the cold water mains supply line. The entire system will
fill with cold water. Once the pump is no longer bleeding air, replace the screw and continue to bleed the air
through the taps. Air will be displaced through the tap and some air needs to be bled off using the air bleed
valve on the collector near the hot sensor lead.
Turn off the hot tap at the sink when water flows freely without air bubbles or air bursts.
9. Adjust Pump Speed
Adjust the pump to the speed specified on page 14.
10. Check for Leaks
Check all connections for leakage and tighten if necessary. This is especially important for all fittings in
positions not easily accessed such as near the solar collectors. Operate the easing gear of both PTR and
ECV valve at the storage cylinders to ensure these valves are functional.
CAUTION
If leaks are detected the system must be drained and leaks repaired before the system is refilled.
If this is necessary, cover the solar collectors with packaging cardboard or a tarp to prevent them
from heating which could result in steam or hot water being discharged from fittings
11. Power up the Controller
Power up the controller, which should be factory set to the desired operating parameters, and observe for any
unlikely immediate errors. An error at this point usually refers to something that has been missed during the
installation procedure. Refer to the separate manual supplied with the controller for more details
12. Finishing the Installation
Ensure that the set temperature on the gas boosting (Demand Duo or Manifold Pack) is set to 60°C or above.
Ensure that the delivered temperature of the water to the building complies with all relevant regulations.
INSTALLATION