Installation Manual
bilize, if the city water pressure is higher than
the PRV open the purge valve slightly to allow
the loop pressure to drop to about 60 PSI. Once
stabilized, the collector loop pressure should
remain fairly constant. A continuous drop in
pressure is an indication of a leak in the system.
Make a final inspection of the collector plumb-
ing connections to ensure that there are no leaks
anywhere in the collector loop piping.
4.14.3
STEP 3
– Run circulator pump to check
pump operation, good flow and air has been
eliminated from collector loop.
After you have determined the integrity of the
entire piping system, turn on the circulating
pump. Do this by setting the manual switch
within the controller to the “on” position. Run
the pump for a full five minutes and carefully
check to ensure there is proper fluid flow and
that all the air has been purged from the col-
lector glycol loop. An inexpensive flow meter
such as manufactured by Blue White Industries
or Letro is recommended as an optional system
component. A flow meter allows you to monitor
and adjust the flow rate through the piping and
also to visually inspect the HTF fluid quality.
Set the controller to the “off” position and pro-
ceed to the next step.
WARNING: THE NEXT STEP MUST BE
P.20
1
2
3
7
3
8
9
10
15
16
4
6
5
17
18
19
20
21
RETURN
PIPE INSULATION
ROOF JACKS
1. SunEarth Solar Collector
(s)
2. Collector Sensor
3. Option Tank and Line
Thermometers
4. Check Valve
5. Isolation Ball Valve
6. Pressure Relief Valve
7. Pressure Gauge
8. Expansion Tank
9. Charge Valve
10. Isolation Ball Valve
11. Drain/Purge Valve
12. Isolation Ball Valve
13. Circulating Pump
14. Isolation Ball Valve
15. Flush Valve
16. Tank Sensor
17. Cold Water Dip Tube
18. Differential Temperature
Controller
19. Heat Exchanger
20. Anode Rod
21. Heating Element & Tank
Thermostat
22. Temperature and Pres-
sure Relief Valve
23. Cold Water Supply Line
Isolation Ball Valve
24. Ball Valve
25. Isolation Ball Valve
26. Ball Valve
27. Cold Water Dip Tube
28. Anode Rod
29. Heating Elements and
Thermostats
30. Temperature and Pres-
sure Relief Valve
31. Optional Isolation Ball
Valve
32. Mixing Valve
32
22
COLD SUPPLY
LINE
HOT SUPPLY
LINE TO FIXTURES
24
25
26
3
23
29
28
27
30
2
T2
T1
11
13
14
12
FEED
TWO TANK SYSTEM SCHEMATIC
fig. 16a
