Electrical; Electrical Data - Daikin Enfinity CCW Installation And Maintenance Manual

Electrical Data

General
1 .
Verify the compatibility between the voltage and
phase of the available power and that shown on the
unit serial 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 and/or a 1-1⁄8" (29 mm) knockout is supplied
on the side of the unit. 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 nameplate for
correct ratings.
3 . Three phase 50 cycle units, 380/50-3, require a
neutral wire for 230/50-1 power to the fan circuit.
4 . Connect the thermostat/subbase wiring with the
power "off " to the unit.
5 . Field supplied relays installed on the input terminals
W1, W2, Y1, Y2 or G may introduce electrical noise.
Never install relay coils in series with the inputs.
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 (sizes 007-060).
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Fan Assembly
All fan motors are multi-speed PSC or optional ECM
(sizes 015-070) 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. To change fan motor speed refer to
"Changing PSC Fan Motor Speed" on page 23.
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.
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IM 1049-9