Air Handler
9
7. Electrical Supply Wire and MOP
7.1 Inspection of the Building Electrical Service
This product is designed for single-phase electrical supply. DO NOT OPERATE ON A THREE-
PHASE POWER SUPPLY. Measure the power supply to the unit. The supply voltage must be in
agreement with the unit nameplate power requirements and within the range shown in table 12.
table 12
Nominal Input
Minimum Voltage
Maximum Voltage
208/230
187
254
WARNING
THE UNIT MUST HAVE AN UNINTERRUPTED, UNBROKEN ELECTRIC GROUNDING TO
MINIMIZE THE POSSIBILITY OF PERSONAL INJURY IF AN ELECTRIC FAULT OCCURS. THE
ELECTRIC GROUNDING CIRCUIT MAY CONSIST OF AN APPROPRIATE SIZED POWER CORD
WHICH CONNECTED WITH THE GROUNDING PIECE LOCATED IN THE UNIT CONTROL BOX
AND ALSO CONNECTING TO THE BUILDING ELECTRIC SERVICE PANEL. OTHER METHODS
OF GROUNDING ARE PERMITTED IF PERFORMED IN ACCORDANCE WITH THE “NATIONAL
ELECTRIC CODE” (NEC)/ “AMERICAN NATIONAL STANDARDS INSTITUTE” (ANSI)/ “NATIONAL
FIRE PROTECTION ASSOCIATION” (NFPA) 70 AND LOCAL/STATE CODES. IN CANADA,
ELECTRIC GROUDING CONFORMS TO THE CANADIAN ELECTRIC CODE CSA C22.1.
FAILURE TO OBSERVE THIS WARNING CAN RESULT IN ELECTRICAL SHOCK THAT CAN
CAUSE PERSONAL INJURY.
WARNING
MORE THAN ONE DISCONNECT MAY EXIST. FAILURE TO OBSERVE THIS WARNING MAY
RESULT IN AN ELECTRICAL SHOCK THAT CAN CAUSE PERSONAL INJURY OR DEATH.
WARNING
TO AVOID THE RISK OF THE FIRE OR EQUIPMENT DAMAGE, ONLY USE COPPER
CONDUCTORS. BEFORE SERVICING OR INSTALLING THIS EQUIPMENT, THE ELECTRICAL
POWER TO THIS UNIT MUST BE IN “OFF” POSITION AND ALL POWER SUPPLIES SHOULD
BE DISCONNECTED.
