Multi F Outdoor Condenser Installation Manual

71
Electrical System Installation
Due to our policy of continuous product innovation, some specifications may change without notification.
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MULTI
F
MAX
MULTI
F
General Instructions
• Always connect power wiring / communications cable matching the
branch distribution unit terminals to their respective indoor units
(Example for three-port branch distribution unit PMBD3630: A, B,
and C).
• Follow the instructions on the nameplates and connect wiring /
cables of the outdoor unit and indoor units to the correct terminals.
Always attach each ground wire separately to a grounding screw.
• After completion, secure wiring with wire clamps. Secure wiring
firmly to the indoor unit.
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Branch Distribution Unit Wiring Connection Procedure
1. Remove the branch distribution unit control cover. Unscrew the two (2) screws, and slide the cover off the branch distribution frame follow-
ing the arrows in the diagram (Step 1).
2. Draw the communications / connection (power) cable from the outdoor unit so there is enough length to connect to the terminals on the
branch distribution unit. Secure a field -supplied conduit to the branch distribution unit using a field-supplied lock nut on the interior of the
branch distribution unit frame (Step 2). Pull the communication / connection (power) cable through the conduit into the branch distribution
unit.
3. Connect communications / connection (power) cable from the outdoor unit to the branch distribution unit terminals, and from the branch
distribution unit terminals to the indoor unit terminals following the wiring diagram on the outdoor unit control cover (Step 3). Allow 11-
13/16 inches of slack in the wire harness. Attach communications / connection (power) cable to the branch distribution unit with clamps at
four (4) locations.
4. Replace the branch distribution unit control cover following the arrows in the diagram. Tighten the two (2) screws to finish (Step 4).
Lock nut (field supply)
Conduit (field supplied)
Lock nut (field supplied)
Step 1
Step 2
Step 3
Step 4
“A” Room
A
B
C
CN-PWR
Connection Wire to Indoor Units Connection Wire from Outdoor Unit
“B” Room
“C” Room
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Distributor Unit (Multi F MAX Systems Only)
Always refer to the circuit diagram on the inside of the outdoor unit control cover.
Figure 92: Interior View of a Branch Distribution Unit (Three-Port
PMBD3630 Example Shown).
Figure 93: Branch Distribution Unit Wiring Steps.
ELECTRICAL
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