Magic Aire HHA Series, Installation, Operation And Maintenance Manual

Page: 42 / 66

035-000029-001 Page 42 HHA IOM 1.4 10/11/2021
1. Perform procedure on the ground for safety. If working at
heights USE EXTREME CAUTION observe all FALL SAFETY
considerations. Under all conditions, LOCK OUT all power sup-
plies before performing this procedure. WARNING! Coil sec-
tion can be heavy depending on coil combination—use proper
lifting equipment.
2. Isolate and drain coil from heating/cooling fluid and/or reclaim
refrigerant. Disconnect unit from piping. Remove supply piping
to allow access into the coil section from the side. Remove coil
section outer access panel (See figures 22 to 25 for instruc-
tions). Note that there is another coil access panel on the oppo-
site side of the unit, both access panels should be removed in
order to take out the coils from the unit.
3. Slide coil section out of the unit. (A minimum of two people is
necessary to remove the coil from the air handler, one pulling
from the coil connections side and the other pushing from the
opposite side) (See figures 29 and 30 for instructions).
4. Replace coil(s) in coil module. (See figures 31 to 37 for instruc-
tions on coil section disassembly, assemble in reverse).
5. Slide coil section back in place and reinstall inner access panel
and insulation. Add sealing tape around edges of inner panel.
6. Reinstall outer access panel.
7. Install coil section access panel.
8. Restore unit to service.
SERVICE-Coil Removal and Reinstallation Procedure
Remove all fasteners indicated
on the image to detach the
second panel
Figure 23
Carefully slide out the
insulation from the coil
Figure 24
Remove all fasteners
indicated on the image
Figure 25
Figure 22
CAUTION
To prevent damage to the coil or coil headers: Do not use the
headers to lift the coil. Use straps around the coil casing to lift and
place the coil. Support the piping and coil connections independent-
ly. Do not use the coil connections to support piping. When tighten-
ing coil connections, use a backup wrench on the coil connection
stub-out.