Heatmor 100 CSS - E High Water Temperature Safety Shutoff Controller (Aquastat on the Right)

62
Removal and Replacement
1) Turn off the main power supply to the HEATMOR™.
2) Remove the aquastat cover.
3) Disconnect and label or draw a diagram of each wire connection on the
aquastat.
4) Loosen the two screws at the back of the aquastat, which clamp the
aquastat to the well in the water jacket.
5) Pull the aquastat body straight out of the well, making sure the
copper wire and probe is being pulled out of the well along with the body.
6) Insert the new unit probe rst, into the well. (Ensure contact paste has
been applied to well.)
7) The clamp must t around the groove of the well. Tighten the
clamp with the two screws at the back of the aquastat body.
8) Connect the electrical wires to the appropriate connections,
following the label or diagram.
9) Replace the cover.
10) Turn on the power.
11) Adjust the dial and white wheel to the preferred settings.
High Water Temperature Safety Shutoff Control (Aquastat on the right)
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 blowers and the front light if an excessive water
temperature be reached. To provide added safety and notication, 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 notication of an unusually high water temperature within the HEATMOR™.
By removing this excess heat from the HEATMOR™, a “boil” will normally be avoided.
Operation
 • From the factory, this control is set at 200 degrees Fahrenheit. When the
water temperature within the water jacket lowers to 195 degrees
Fahrenheit; the electrical circuit to the main combustion air blower(s) would
be re-activated. The combustion air blowers will not come back on until the
low water temperature is reached.
• There is no need to make any adjustment. Leave it set at 200 degrees
Fahrenheit.
Removal and Replacement
1) Turn off the main power supply to the HEATMOR™.
2) Remove the aquastat cover.
Removal of
Aquastat Cover
Wire Probe
High Temp
Safety Shutoff
Removal of
Aquastat Cover