CCI Thermal Technologies AV - Advanced Vertical Unit Heater - Manuel (Page 9)

9
Support back
of heater
HEAT EXCHANGER REMOVAL OF
SINGLE- MOTOR UNIT HEATER
1. Remove unit heater from its mounted location and
lower to a stable working surface.
2. Remove all louver blades from the front of
the cabinet.
3. Remove the left fan guard and left cabinet
side panel as described below. If the heat exchanger
has flanged connections, also remove the top
cabinet panel.
4. Support the weight of the heat exchanger by the
piping connection while removing the four core bolts
that fasten the heat exchanger to the cabinet. (See
figure 9). Allow heat exchanger to rest on the bottom
of the cabinet.
5. Remove the two bolts holding the motor mount to
the left side of the cabinet. Support motor mount while
removing these two bolts. Once cabinet side has
been removed, reinsert the bolts in the motor
mount. Place a support under the motor mount to
prevent the cabinet from rolling over during heat
exchanger removal (see Figure 12).
6. With the cabinet side removed and motor mount
supported, slide heat exchanger out of the cabinet.
(see Figure 13). On larger units, assistance may be
necessary due to the weight of the heat exchanger.
7. To install heat exchanger into cabinet, reverse order
of heat exchanger removal procedure.
HEAT EXCHANGER REMOVAL OF
DOUBLE-MOTOR UNIT HEATER
(Due to the weight of the heat exchanger, an assistant is
recommended to help with the following procedure.)
1. Remove unit heater from its mounted location and
lower to a stable work surface. To prevent damage to
the bottom piping connection, do not rest heater on
connection while servicing.
2. Remove all louvers from the front of the cabinet.
3. Remove the top cabinet panel by removing the four
bolts in the corners of the top panel and the fasteners
along the top of the shrouds (see Figure 14).
4. Have an assistant support the weight of the heat
exchanger while removing the eight bolts that fasten
the heat exchanger to the cabinet (see Figure 15).
Once the bolts on one side are removed, lower that
side of the heat exchanger to rest on the bottom of
the cabinet. Place a support under the motor mount
of the cabinet to prevent the cabinet from rolling over
during heat exchanger removal (see Figure 14).
5. Loosen cabinet side panel fasteners but do
not remove. If the heat exchanger has flanged
connections also remove the left side panel.
6. Lift the heat exchanger up and out through the front
of the cabinet (see Figure 16).
7. To install heat exchanger procedure, reverse the
order of heat exchanger removal procedure.
- 9 -
FIGURE 15
FIGURE 14
FIGURE 16
FIGURE 13
HEAT EXCHANGER REMOVAL OF
SINGLE- MOTOR UNIT HEATER
1. Remove unit heater from its mounted location and lower to a
stable working surface.
2. Remove all louver blades from the front of the cabinet.
3. Remove the left fan guard and left cabinet side panel as
described below. If the heat exchanger has flanged connections,
also remove the top cabinet panel.
4. Support the weight of the heat exchanger by the piping
connection while removing the four core bolts that fasten
the heat exchanger to the cabinet. (See figure 9). Allow heat
exchanger to rest on the bottom of the cabinet.
5. Remove the two bolts holding the motor mount to the left side
of the cabinet. Support motor mount while removing these two
bolts. Once cabinet side has been removed, reinsert the bolts
in the motor mount. Place a support under the motor mount
to prevent the cabinet from rolling over during heat exchanger
removal (see Figure 12).
6. With the cabinet side removed and motor mount supported,
slide heat exchanger out of the cabinet. (see Figure 13). On
larger units, assistance may be necessary due to the weight of
the heat exchanger.
7. To install heat exchanger into cabinet, reverse order of heat
exchanger removal procedure.
HEAT EXCHANGER REMOVAL OF
DOUBLE-MOTOR UNIT HEATER
(Due to the weight of the heat exchanger, an assistant is
recommended to help with the following procedure.)
1. Remove unit heater from its mounted location and lower to a
stable work surface. To prevent damage to the bottom piping
connection, do not rest heater on connection while servicing.
2. Remove all louvers from the front of the cabinet.
3. Remove the top cabinet panel by removing the four bolts in the
corners of the top panel and the fasteners along the top of the
shrouds (see Figure 14).
4. Have an assistant support the weight of the heat exchanger
while removing the eight bolts that fasten the heat exchanger
to the cabinet (see Figure 15). Once the bolts on one side are
removed, lower that side of the heat exchanger to rest on the
bottom of the cabinet. Place a support under the motor mount of
the cabinet to prevent the cabinet from rolling over during heat
exchanger removal (see Figure 14).
5. Loosen cabinet side panel fasteners but do not remove. If the
heat exchanger has flanged connections also remove the left
side panel.
6. Lift the heat exchanger up and out through the front of the
cabinet (see Figure 16).
7. To install heat exchanger procedure, reverse the order of heat
exchanger removal procedure.