Multi F Outdoor Condenser Installation Manual

63
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
Figure 81: Typical Multi F System General Power / Communications
System Schematic.
Figure 82: Typical Multi F MAX System General Power / Communica-
tions System Schematic.
Power Supply
Circuit Breaker
Indoor Unit
Branch Distribution Unit
Ground Wiring
Outdoor Unit
Branch Distribution Unit
Indoor Units
Power Supply
Circuit Breaker
Ground Wiring
Outdoor Unit
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ELECTRICAL
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Electrical interference my cause product malfunction.
•
Never ground the shield of the communications cable to the indoor unit frame or other grounded entities of the building. Ground the
communications cable shield only at the outdoor unit. Improperly grounding this cable can cause communications errors.
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ment. Electrical interference my cause product malfunction.
Figure 80: Typical Multi F / Multi F MAX Outdoor
and Indoor / Branch Distribution Unit Wiring and
Communications Cable Diagram.
Power Wiring, Ground,
Communication Cable
From Outdoor Unit
To Indoor Unit or from the
Outdoor Unit to the Branch
Distribution Unit
13/16”
GN/YL
GN/YL = (Ground, Yellow)
7/16" ± 1/8"
• Insulation material as required by local code.
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• Firmly attach the cable; provide slack but secure in a way to prevent external forces
from being imparted on the terminal block.
• Wiring must be completed without splices.
Multi F Systems:
• Communication / connection (power) cable from the outdoor unit to the indoor unit must
use a minimum of 14 AWG, four (4) conductor, stranded, shielded or unshielded (if
shielded, it must be grounded to the chassis of the outdoor unit only), and must comply
with applicable local and national codes.
• Use of 14 AWG, four (4) conductor, stranded, shielded or unshielded wire is allowed for lengths up to the published maximum pipe length,
plus recommended slack at both ends.
Multi F MAX Systems:
• All communication / connection (power) cable from the outdoor unit to the branch distribution unit(s) must be a minimum of 14 AWG, four (4)
conductor, stranded, shielded or unshielded (if shielded, it must be grounded to the chassis of the outdoor unit only), and must comply with
applicable local and national codes.
• Communication / connection (power) cable from the branch distribution unit(s) to the indoor units must use a minimum of 14 AWG, four (4)
conductor, stranded, shielded or unshielded (if shielded, it must be grounded to the chassis of the outdoor unit only), and must comply with
applicable local and national codes.
• Use of 14 AWG, four (4) conductor, stranded, shielded or unshielded wire is allowed for lengths up to the published maximum pipe length,
plus recommended slack at both ends.