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G.2 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 8). 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 11).
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.
G.3 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 13).
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 14). 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 13).
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 15).
7.
To install heat exchanger procedure, reverse the order
of heat exchanger removal procedure.
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
Figure 12
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
Figure 13
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
Figure 14
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
Figure 15
Содержание AH-12A
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