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Electrical Connections, Grounding & Bonding EnviroComfort Installation Manual
12 L-2657 ENGLISH
If two or more air conditioning units use the same seawater pump, the pump wires will connect to a pump relay panel (PRP),
which in turn has its own dedicated circuit breaker (see the wiring diagram furnished with the PRP). Any electrical connections
in the bilge below the waterline should use heat-shrink-type butt splices.
G
ROUNDING
The air conditioning unit must connect to the boat's bonding system to prevent corrosion due to stray electrical current. Ensure
the AC ground of the air conditioning unit is properly connected to the AC ground of the boat.
Within the boat itself, ensure the AC ground bus is connected to the DC ground bus at exactly one place (no more, no less). All
pumps, metallic valves and fittings in the seawater circuit that are isolated from the air conditioning unit by PVC or rubber hoses
must be individually bonded to the boat's bonding system, also. This helps eliminate any possibility of corrosion due to stray
current.
E
LECTRICAL
ABYC S
TANDARDS
Field wiring must comply with ABYC electrical standards.
• Power to the unit must be within the operating voltage range indicated on the data plate.
• Properly sized fuses and circuit breakers must be installed for branch circuit protection. See equipment rating plate for
maximum size.
• All air conditioning units must be effectively grounded to minimize the hazard of electric shock and personal injury.
The following ABYC standards apply:
• Alternating current (AC) grounding (green) wire must be provided with the AC power conductors and connected to the
ground terminal (marked “GRND”) at the AC power input terminal block of the unit(s), per ABYC standard E-8.
• Connections between the vessel’s AC system grounding conductor (green wire) and the vessel’s Direct Current (DC)
negative or bonding system should be made as part of the vessel’s wiring, per ABYC standard E-9.
• When servicing or replacing existing equipment containing a chassis-mounted “ground” stud, the service person or
installer must check the vessel’s wiring for the existence of the connection required in item 2 above.
ABYC standards are available via:
Phone: (410) 990-4460
Fax: (410) 990-4466
URL: www.abycinc.org
NOTE
Failure to properly ground and bond the system will void the warranty and damage the unit!