Rinnai P Series Installation Manual page 17

pen front panel of the indoor unit.
1. O
Using a screwdriver, open the wire box cover
2.
on the right side of the unit. This will reveal
the terminal block.
NOTE:
For the units with conduit tube to connect the
cable, remove the big plastic konck-out panel to
create a slot through which the conduit tube can
be installed.
For the units with five-core cable, remove the
middle small plactic knock-out panel to create
a slot through which the cable can exit.
Use needle nose pliers if the plastic panel is too
difficult to remove by hand.
Unscrew the cable clamp below the terminal
3.
block and place it to the side.
Facing the back of the unit, remove the plastic
4.
panel on the bottom left-hand side.
5. Feed the signal wire through this slot, from
the back of the unit to the front.
6. Facing the front of the unit, connect the wire
according to the indoor unit's wiring diagram,
connect the u-lug and firmly screw each wire
to its corresponding terminal.
CAUTION
DO NOT MIX UP LIVE AND NULL WIRES
This is dangerous, and can cause the air
conditioning unit to malfunction.
After checking to make sure every connection
7.
is secure, use the cable clamp to fasten the
signal cable to the unit. Screw the cable clamp
down tightly.
Replace the wire cover on the front of the
8.
unit, and the plastic panel on the back.
Rinnai
Front view
Terminal block
Wire cover
Screw
Cable clamp
Back view
(For some units only)
Knock-out panel
knock
NOTE ABOUT WIRING
THE WIRING CONNECTION PROCESS MAY
DIFFER SLIGHTLY BETWEEN UNITS AND
REGIONS.
Step 7: Wrappiping 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(Not applicable in
North America).
Bundle the drain hose, refrigerant pipes, and
1.
signal cable as shown below:
Indoor Unit
Signal wire
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.
2. Using adhesive vinyl tape, attach the drain
hose to the underside of the refrigerant pipes.
Using insulation tape, wrap the signal wire,
3.
refrigerant pipes, and drain hose tightly
together. Double-check that all items are
bundled.
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 (refer to Electrical Checks
and Leak Checks section of this manual).
17
INDOOR INSTALLATION
.
Space behind unit
Refrigerant piping
Insulation tape
Drain hose
Split AC IM
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