Electrical Connections - Daikin Enfinity VFC Installation And Maintenance Manual

Electrical Connections

Note: Installation and maintenance must be performed
only by qualified personnel who are familiar with
local codes and regulations, and are experienced
with this type of equipment.
Hazardous Voltage! The installer must determine
and follow all applicable codes and regulations. This
equipment presents hazards of electricity, rotating
parts, sharp edges, heat and weight. Failure to read
and follow these instructions can result in property
damage, severe personal injury or death.
CAUTION
Sharp edges can cause personal injury. Avoid contact with them.
Figure 10: Unit Electrical and Piping Locations
Control Access Panel
A Condensate
B Desuperheater Water Return (Optional)
C Desuperheater Water Supply (Optional)
D Water Return
E Water Supply
F Low Voltage Control Wiring (Electric Entrance)
G Line Voltage Unit Power (Electric Entrance)
Operating Voltages
115/60/1 . . . . . . . . . 104 volts min.; 127 volts max.
208-230/60/1 . . . . . 197 volts min.; 253 volts max.
265/60/1 . . . . . . . . . 238 volts min.; 292 volts max.
460/60/3 . . . . . . . . . 414 volts min.; 506 volts max.
575/60/3 . . . . . . . . . 515 volts min.; 632 volts max.
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WARNING
Note: Voltages listed are to show voltage range. How-
ever, units operating with over voltage and under
voltage for extended periods of time will experi-
ence premature component failure. Three phase
system unbalance should not exceed 2%.
General
1 .
Verify the compatibility between the voltage and
phase of the available power and that shown on the
unit data plate. Line and low voltage wiring must
comply with local codes or the National Electrical
Code, whichever applies.
2 . Apply correct line voltage to the unit. A 7⁄8" (22mm)
hole. A disconnect switch near the unit is required
by code. Power to the unit must be sized correctly
and have dual element (Class RK5) fuses or an
HACR circuit breaker for branch circuit overcurrent
protection. See the data plate for correct ratings.
3 . Connect the thermostat/subbase wiring with the
power "off " to the unit.
230 Volt Operation
All 208-230 volt single-phase and three-phase units
are factory wired for 208 volt operation. For 230 phase
operation, the line voltage tap on the 24-volt transformer
must be changed. Disconnect and cap the red lead
wire and interchange it with the orange lead wire on the
primary of the 24-volt transformer.
Fan Assembly
All fan motors are multi-speed PSC or optional ECM
(sizes 019-070) type with integral mounting brackets and
thermal overload protection. The motor is isolated from
the fan housing for minimum vibration transmission. PSC
Fan motors have a terminal strip on the motor body for
simple motor speed change without going back to the
control box. See "Changing PSC Fan Motor Speed" on
page 21.
All the fan/motor assemblies have a removable orifice
ring on the housing to accommodate motor and fan
wheel removal without disconnecting the ductwork.
The fan housing protrudes through the cabinet allowing
adequate material for connection of flexible duct. Each
model unit is shipped from the factory for maximum
performance and minimum sound requirements. Fan
sound levels and performance can be affected by
external static pressure.
11 Enfinity Vertical Water Source Heat Pumps • IM 930-6
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