http://www.heatmor.com/Uploads/42457_Heatmor_Response_Guts_053112.pdfpage 13
6) The red wire from the high-limit aquastat on the back of the HEATMOR™ should be wired to the
indoor temperature control to override the thermostat. This will dissipate excess heat in the event of a
possible malfunction with the HEATMOR™.(the red wire is capped off in the electrical junction
box when the heatMOr™ is new.)
page 60
High Water Temperature Safety Shutoff Control
Principles
The correct name is an “aquastat.” It is referred to as an aquastat because it
measures the temperature of water (aqua means water). It is sometimes referred to as a thermostat, but
thermo means air. It does not measure the temperature of air. The High Water Temperature Safety Shutoff
Control turns off all electrical power to the combustion air blower and the front light if an excessive water
temperature be reached. To provide added safety and notification, when a high water temperature is reached,
this aquastat will send electrical power to the “red wire”. The red wire leading from the HEATMOR™ back to
the power source can be installed so the electrical power will sound an alarm or will override the comfortable
heat settings within the heated building. By starting heating appliances in the building, heat will be drawn
off the HEATMOR™, dumped into the building, creating an elevated temperature
environment in the building, and hence a notification of an unusually high water
temperature within the HEATMOR™. By removing this excess heat from the
HEATMOR™, a “boil” will normally be avoided.
page 70
.
The high limit aquastat has probably overridden the operating aquastat. If this has happened,
it
should also trigger your distribution system or high water temperature warning.
5.
Q. Why is it getting so warm in my house and I cannot reduce the temperature with the thermostat?
a
.
At this point the high limit aquastat has been tripped on. To detect the precise reason, please contact
your local dealer.