collectors with an opaque material or to manu-
ally drain the collector loop HTF. SunEarth
recommends that you cover the collectors if
practical.
If you choose to drain the HTF in the collector
loop follow these steps:
8.1 Turn the controller to the “off” position
(COMPONENT #18, FIGURES 15A; 15B;
16A; 16B; 17A; 17B ).
8.2 Connect one end of a garden hose to
the purge/drain valve (COMPONENT #11
FIGURES 15A; 15B; 16A; 16B; 17A; 17B )
and place the other end in a five gallon bucket.
Open both the purge/drain valve and the upper
fill valve and gravity will drain the heat trans-
fer fluid into the bucket. If the HTF is being
disposed of, a licensed recycler, reclaimer or
incinerator must dispose of the HTF.
WARNING: DO NOT DUMP DOWFROST
HD INTO A STORM SEWER, ON THE
GROUND OR INTO ANY BODY OF
WATER. BE CAREFUL. THE HTF MAY
BE EXTREMELY HOT!
8.3 If the electric water heater is installed with
an optional time clock controlling the element
make sure the clock is not preset to go “ON”
during your absence. If you have a time switch,
deactivate per clock’s instruction manual.
P.25
30
22
COLD SUPPLY
LINE
HOT SUPPLY
LINE TO FIXTURES
24
25
26
3
23
1
2
10
15
16
5
17
18
19
21
FEED
RETURN
PIPE INSULATION
ROOF JACKS
8
1. SunEarth Solar Col-
lector(s)
2. Collector Sensor
3.
Thermometers
4. Check Valve
5.
6. Pressure Relief Valve
7. Pressure Gauge
8. Expansion Tank
10.
15. Flush Valve
16. Tank Sensor
17. Cold Water Dip Tube
18.
ature Controller
19. Heat Exchanger
20. Anode Rod
21.
Tank Thermostat
22. Temperature and
Pressure Relief Valve
23. Cold Water Supply
Valve
24. Ball Valve
25.
26. Ball Valve
30. Temperature and
Pressure Relief Valve
32. Mixing Valve
33.
34. SunEarth Solar-
32
T2
T1
3, 10
11, 12
3, 4
9
13
6
7
11
TANKLESS BACKUP W/ SOLAR STATION
SYSTEM SCHEMATIC
fig. 17b
