Bosch Geothermal Heat Pumps Applications Manual page 113

Applications Manual
Two provided sensors must be installed in the blower
housing and the condenser water coil respectively. Drill
a pilot hole on blower assembly (Fig. 134) to secure
the sensor with the provided screw and strap. It is
recommended to use a 9/64" diameter metal bit. Use the
provided plastic strap and screw to secure the discharge
air temperature sensor (metal portion) to the blower
housing (Fig. 134).
Fig. 134
Use the provided wire tie to secure the sensor to the strap.
Fasten the screw by using a screw driver. Do not use a drill
as it may strip the screw .Remove the cork insulation and
route the sensor wire leads to the electrical box along with
the existing wires through the knock out available on the
blower divider panel (Fig. 133).
To install the second sensor on the condenser water
coil, remove the insulation tape from the top pipe near
the corner post of the water coil and place the sensor as
shown (Fig. 135).
Fig. 135
Use the provided wire ties to secure the sensor to the coil
pipe (Fig. 136).
Bosch Thermotechnology Corp.
Bosch Geothermal Heat Pumps | 113
Fig. 136
Use the provided cork insulation tape to cover the sensor
completely.
Use the provided insulation tape to cover both the pipe
and the sensor (Fig. 137 and 138) respectively.
Fig. 137
Fig. 138
Finally, route the sensor wire leads into the unit electrical
box. Separate and identify the sensors wire leads for the
harness connection later.
Data subject to change