Daikin DFG Series Installation Instructions Manual page 9

15-25 TON TSTAT POWER AND LOW VOLTAGE TERMINAL
15-25 TON DDC POWER AND LOW VOLTAGE TERMINAL LOCATIONS
NOTE: Depending on the options installed, the location of the
components may vary in some models.
Failure of unit due to operation on improper line voltage or
with excessive phase unbalance constitutes product abuse
and is not covered by the warranty. It may cause severe
damage to the unit electrical components.
LOCATIONS
WARNING
Areas Without Convenience Outlet
It is recommended that an independent 115V power source be
brought to the vicinity of the roof top unit for portable lights and
tools used by the service mechanic.
NOTE: Refer to local codes for requirements. These outlets can
also be factory installed.
Units installed on Roof Tops
Main power and low voltage wiring may enter the unit through
the side or through the roof curb. If connections need to be made
through the roof curb, a through the base kit (TTBCK03) will need
to be used. Install conduit connectors at the designated entrance
locations. External connectors must be weatherproof. All holes
in the unit base must be sealed (including those around conduit
nuts) to prevent water leakage into building. All required conduit
and fittings are to be field supplied.
Supply voltage to roof top unit must not vary by more than 10%
of the value indicated on the unit data plate. Phase voltage unbal-
ance must not exceed 2%. Contact your local power company for
correction of improper voltage or phase unbalance.
ELECTRICAL ENTRANCE LOCATIONS
Unit is equipped with a Low Voltage Terminal Block and has Single
Point wiring to the contactor (Above Image).
Low Voltage Control Wiring
NOTE: For models equipped with the DDC controls option, refer
to the supplemental DDC literature supplied with the unit for ad-
ditional information.
1. A 24V thermostat must be installed for unit operation. It
may be purchased with the unit or field -supplied. Ther-
mostats may be programmable or electromechanical as
required.
2. Locate thermostat or remote sensor in the conditioned
space where it will sense average temperature. Do not
locate the device where it may be directly exposed to
supply air, sunlight or other sources of heat. Follow instal-
lation instructions packaged with the thermostat.
3. Use #18 AWG wire for 24V control wiring runs not ex-
ceeding 75 feet. Use #16 AWG wire for 24V control wir-
ing runs not exceeding 125 feet. Use #14 AWG wire for
24V control wiring runs not exceeding 200 feet. Low volt-
age wiring may be National Electrical Code (NEC) Class 2
where permitted by local codes.
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