Carrier 40TZ Series Installation Instructions Manual page 3

Fig. 4 - Electric heater (front view)
Thermal switches
Fig. 5 - Fan panel (front view)
The electric heater must be fixed to the discharge air panel.
Align holes 1 of the heater with holes 1 of the panel. Secure
the heater as shown in Fig. 6, using the screws supplied.
Fig. 6 - View of the unit and electric heater
1 Holes and fixing points of the electric heater to the unit,
with fixing screws.
F - Changing the electric heater control box from its standard
position as supplied to the alternative position is possible
if the indoor fan air discharge is located in the lower part
of the casing.
Proceed to change the control box position so that it is located
in the upper part when mounted in the unit (see Fig. 3).
Figs. 4, 5 and 6 show the heater with the control box in the
lower part and the thermal switches in the upper part. To
change the position it is enough to remove the four screws that
secure the frame of the electric heaters and the thermal
switches as shown below.
Once the electric heater frame and the thermal switches have
been disconnected, turn the heater 180°, removing the strip that
covers them.
Insert the thermal switches in the hole below the control box so
that the manually reset thermal switch is accessible.
Gather the connection cables from the heaters and thermal
switches so that they are protected and hidden by the frame that
has been removed.
Re-insert the screws that were previously removed.
The control box and the thermal switches must be located in
the same zone of the heater, contrary to what is shown in Figs.
4 and 7 so that they can be installed in the unit when the fan is
located with its air discharge section in the lower part of the
unit (Fig. 3).
Fig. 7
Thermal switches
Control box
Fig. 8
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