Specifications

b) Follow this process to fill the system:

Step 1. Close isolation valves (horizontal is closed) between water tank and pump station. The first

one is beneath the pump yellow handle and second is on right hand side with red handle.

Step 2. Fill and purge water tank as normal.

Step 3. Connect hose (garden hose fitting) to drain port on solar return (right side) and run other end of

the hose to a suitable drain location. Consider the movement of the pipe that could result with high

pressure and flow rate during draining.

Step 4. Open the isolation valves between water tank and pump station. Open drain valve on the

drain port until no more air bubbles are visible from the drain hose.

Step 5. An air vent should also be installed (temporarily) on the outlet of the collector, or highest point

of the plumbing to aid in air removal from the system.

Step 6. Once the system is free of air, close the drain port.

Step 7. Manually start the system pump (P1) using the Manual Testing function of the controller. Run

for 5 minutes checking the flow rate options, and eliminating any additional air from the system. Only

fully bled, remove the air vent from the collector outlet/highest point of system.

󱚡 NOTICE

Before connecting the pump station and completing the ﬁlling procedure, pressure test the

collector loop with compressed air in accordance with standard plumbing practices. This is

important to ensure no leaks are present in the roof space, attic etc.

󱚡 WARNING

Auto air vent MUST be removed after bleeding of air is completed. The auto air vent will not

be able to withstand stagnation temperature, may block with scale over time, and will

release steam if the system ever stagnates, wasting water and also poses a DANGER of

scalding any nearby persons.

8.9. Draining System

a) If servicing the collector or any part of the solar loop or the storage tank, the system should be drained of

water.

󱚡 WARNING

Only drain the system once the solar collector is below 113

F (45

C). Draining the system

while the system is hot could result in release of high pressure hot ﬂuid which could cause

serious scalding.

󱚡 WARNING

If the installer/contractor leaves the site at any time a clear sign should be mounted on the

front of the pump station and/or storage tank that reds: “This equipment is currently

being maintained. Under no circumstances should any valves be opened or closed

or the power supply to any equipment be restored.” Opening closed isolation valves

could release high pressure water that is potentially hot enough to cause serious scalding.

b) DRAINING COLLECTOR ONLY:

Step 1. Cover the solar collector to prevent exposure to sunlight. At least 30 minutes is required to

Apricus Solar Collector Installation & Operation Manual - USA