Rev. B, October 2020
OPERATIONS AND MAINTENANCE MANUAL
Islander Hot Water Station
Welcome!
By utilizing a Solar Thermal water heating
system you are helping to reduce your homes
dependence on non
-
renewable energy. We
hope you enjoy your pre
-
engineered Islander
Hot Water Station (HWS) for many years to
come. Thank you and welcome to the SunEarth
family!
Components
The components in your pre
-
engineered
Islander HWS include a (1) differential
controller with temperature sensors, a (2)
potable expansion tank, an (3) analog pressure
gauge, a (4) solar storage tank with backup
heating element, and a (5) circulation pump.
System Principles
When the differential controller detects an
adequate temperature difference between the
collector temperature sensor
“
T1
”
and the
bottom tank temperature sensor
“
T2
”
the
pump begins circulating tank water through
the system. Water moves through the collector
and absorbs energy from the sun, increasing
the temperature. The heated water then
returns to the solar tank ensuring hot water is
always available for delivery. On days without
adequate sun, the backup heating element
automatically turns on via thermostat to meet
the demand.
The Islander HWS is a direct, open loop system
and is intended for areas that have never
experienced temperatures below 35 degrees
Fahrenheit.
SOLAR RETURN
HOT OUT
SOLAR SUPPLY
COLD IN
2
5
1
4
3
