How The Tank Heater Works; Storage - Algas SDI SECOND SUN Manuel D'utilisation Et D'entretien

How the Tank Heater Works
A solid state thermo‐electric generator (TEG) provides power to operate the tank heater. Electrical power is
generated by the temperature differential between the heater and the ambient air temperature. The small
finned aluminum heat sink cools one side of the TEG and the heater provides heat to the opposite side of the
TEG. The heat sink fins must remain exposed and unobstructed. The SECOND SUN™ is a "staged" heater
consisting of a smaller portion called the "pilot" and a larger section called the "main heater". These two
sections are both contained within the overall heater and cannot be seen without removing the catalyst
material.
The pilot heater is used to start the catalyzing process and to allow the heater to turn down when main heat is
not necessary.
At ambient temperatures of 85‐90°F (29‐32°C) with Propane the heater will automatically shut down due to
high pressure. This will most likely occur if there is no continuous demand for gas. Before restarting the unit,
in the fall, the catalyst material should be visually inspected to make sure rodents have not entered and
degraded the material. At the same time, the tank surface covered by the heater should be inspected for
corrosion, using the same method used for inspecting all other exposed surfaces. (See the Maintenance section
of this manual).
Storage
When not needed during the summer or off season, it is recommended that the unit be shut off and removed
from tank, in order to prevent the accumulation of dust and other contaminants which could impair proper
function of the tank heater.
ASDI Operations and Maintenance – Second Sun – P/N 52793 7