Fisher FSAIF-CP-91AE3 Technical Manual page 48

The air conditioner's circuit board (PCB) is designed with a
fuse to provide overcurrent protection. The specifications
of the fuse are printed on the circuit board, such as:
T3.15A/250VAC, T5A/250VAC, etc.
• Pay attention to live wire
While crimping wires, make sure you clearly distinguish the
Live ("L") Wire from other wires.
• All wiring must performed strictly in accordance with
the wiring diagram located on the back of the indoor
units front panel.
• Do not mix up live and null wires.
This is dangerous, and can cause the air conditioning unit
to malfunction.
• The wiring connection process may differ slightly
between units.
3.7 Wrap piping and cables
Before passing the piping, drain hose, and the signal cable
through the wall hole, you must bundle them together to
save space, protect them, and insulate them.
1. Bundle the drain hose, refrigerant pipes, and signal
cable according tothe picture below:
Indoor Unit
Signal wire Drain hose
2. Using adhesive vinyl tape, attach the drain hose to the
underside of the refrigerant pipes.
3. Using insulation tape, wrap the signal wire, refrigerant
pipes, and drain hose tightly together. Double-check that
all items are bundled in accordance with the picture above.
NOTE:
• Drain hose must be on bottom
Make sure that the drain hose is at the bottom of the
bundle. Putting the drain hose at the top of the bundle
can cause the drain pan to overflow, which can lead to fire
or water damage.
• Do not intertwine signal cable with other wires
While bundling these items together, do not intertwine or
cross the signal cable with any other wiring
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• Do not wrap ends of piping
When wrapping the bundle, keep the ends of the piping
unwrapped. You need to access them to test for leaks at
the end of the installation process.
3.8
3.8.1
1. If you have already passed the refrigerant piping
through the hole in the wall, proceed to Prepare
refrigerant piping.
2. Otherwise, double-check that the ends of the refrigerant
pipes are sealed to prevent dirt or foreign materials from
entering the pipes.
3. Slowly pass the wrapped bundle of refrigerant pipes,
drain hose, and signal wire through the hole in the wall.
4. Hook the top of the indoor unit on the upper hook of
the mounting plate.
5. Check that unit is hooked firmly on mounting by
applying slight pressure to the left and right-hand sides of
the unit. The unit should not jiggle or shift.
6. Using even pressure, push down on the bottom half of
the unit. Keep pushing down until the unit snaps onto the
hooks along the bottom of the mounting plate.
7. Again, check that the unit is firmly mounted by applying
slight pressure to the left and the right-hand sides of the
Space behind unit
unit.
Refrigerant piping
3.8.2
Insulation tape
Step 1. Hook the indoor unit on the mounting plate
Keep in mind that the hooks on the mounting plate are
smaller than the holes on the back of the unit.
If you find that you don't have ample room to connect
embedded pipes to the indoor unit, the unit can be
adjusted left or right by about 30-50mm (1.18-1.95in),
depending on the model.
30-50mm
(1.18-1.95in)
Step 2. Prepare refrigerant piping
1. Open and fix the position of the panel, then, open the
covers of the two lock blocks, unscrew the screw showed
in the picture below, then hold both sides of the lower
Mount indoor unit
If you installed new connective piping to
the outdoor unit, do the following:
If refrigerant piping is already embedded
in the wall, do the following:
Move to left or right
30-50mm
(1.18-1.95in)