Airstream Interstate 2020 - Solar System; Water Heater

Interior
2020 Interstate 5-21
Water Heater
The Interstate Touring Coach is equipped with an
on-demand tankless water heater featuring 60K BTU
output, freeze protection, and direct spark ignition� The
tankless water heater monitors inlet water temperature
and ow, and output water temperature and ow. The
water heater is operated using the Multiplex System’s
control panel�
NOTE
Review the water heater literature supplied in your
owner’s packet before proceeding.
Below is a representation of normal operating valve
settings� When the valve is in the upright position the
water valve is open� When winterizing or storing for
long periods it is recommended to close the bypass
valve by turning the valve a quarter turn� Refer to
Section 9 - Maintenance for further winterization and
storage instructions�
CAUTION
This appliance does not have a pilot. It is equipped
with an ignition device which automatically lights
the burner. Do not try to light the burner by hand.
WARNING
The water heater has built-in FREEZE
PROTECTION and will intermittently cycle the
burner when the water temperature is between
1°C/ 35°F to 4.5°C/40°F. To provide this freeze
protection, the gas supply must be on, gas must be
available and electrical power must be on.
Solar System
Airstream utilizes Zamp solar panels and a Sun-
Explorer charge control and display� Cut the cord to
expensive daily shore power hook-ups with the 12-volt
solar charging system� Ensuring the panels are clean,
not partially shaded by trees or other interference will
promote solar charging�
The Sunexplorer charge control performs these basic
functions:
1� It senses when the battery is fully charged and
disconnects the charge current to avoid over-
charging the battery�
2� It resumes charging the battery when the battery
voltage has dropped sufciently to accept
additional charge current�
3� It checks the availability of charge current, by
cycling the relay every 4 minutes� If there is
insufcient charge current available, it’s internal
relay will disconnect the battery to prevent
discharge through the solar panels at night�
Three different colored LED’s indicate the status of the
battery charge� Green = Full, Yellow = Partial, blinking
Orange = low� When orange LED is blinking, due to low
voltage, both the green and yellow LEDs will be dimly
lit� Manuals on their use are included with the Airstream
owner’s packet�
Refer to Section 9 - Maintenance for Solar Panel Pre-
Wire diagram and information�