4.14.4
STEP 4
replace water in the collector
loop with HTF mixture.
Mix the propylene glycol HTF and distilled
water mixture in a accordance with Table 4 and
Table 5 in a large clean bucket. You will need
a second empty bucket as well. The charging
process will require a high head pressure pump
capable of producing 50 PSI (115ft. head) pres-
sure to charge the system.
Place the hose for the discharge side of the
pump in the empty bucket. Place the hose for
the suction side of the pump in the bucket with
the HTF. Run the charge pump and allow a
small amount of HTF to transfer to the empty
bucket this step flushes the pump and hoses.
Stop the pump and transfer the hose for the dis-
charge side of the pump to the bucket with the
HTF. Run the charge pump for approximately
30 seconds or long enough to ensure priming of
the pump.
Connect the discharge side of the charging pump
to the upper charge faucet (COMPONENT #9,
FIGURES 15A; 15B; 16A; 16B; 17A; 17B).
Close the isolation ball valve (COMPONENT
#10, FIGURES 15A; 15B; 16A; 16B; 17A;
17B) and connect a second hose to the lower
charge faucet (COMPONENT #11, FIGURES
15A; 15B; 16A; 16B; 17A; 17B). Place the
other end of the second hose in the empty
P.21
22
COLD SUPPLY
LINE
HOT SUPPLY
LINE TO FIXTURES
24
25
26
3
23
29
28
27
30
1
2
15
16
17
18
20
21
FEED
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
10.
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
33.
Optional Time Switch
34.
SunEarth SolarStation
32
T1
8
3, 10
11, 12
3, 4
9
13
6
7
10
5
T2
32
TWO TANK W/SOLAR STATION
SYSTEM SCHEMATIC
fig. 16b
