Page 24
D-Optional Electric Heat Components
and capacities.
response to thermostat demand.
1-Contactors K15, K16
contactors located on the electric heat vestibule. All
contactors are equipped with a 24VAC coil. The coils in the
stage heating elements.
2-High Temperature Limits S15 (Primary)
+ +
++
+
+
++
The thermostat is not adjustable.
3-High Temperature Limit S20, S157, S158, S159, S160
& S161 (Secondary)
+ +
4-Terminal Strip TB2
TB2.
5-Terminal Strip TB3
Electric heat line voltage connections are made to terminal
heat vestibule. TB3 distributes power to the electric heat
components.
6-Heating Elements HE1 through HE6
The elements in 208/230V units are connected in a
connected in “Wye” arrangement. Each stage is energized
independently by the corresponding contactors located on
is provided by primary and redundant high temperature
7-Fuse F3
8-Unit Fuse Block F4
ELECTRIC HEAT CONTROL ASSEMBLY
1-Electric Heat Relay K9
All KCC series units with electric heat use an electric
ELECTRIC HEAT CONTROL ASSEMBLY
ELECTRIC HEAT
SECTION
DL2
ELECTRIC HEAT
CONTROL ASSEMBLY
K9
FIGURE 11
To Next Page
Loading...