Daikin DTC Series, Руководство по установке

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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’s data plate. Phase voltage
unbalance must not exceed 2%. Contact your local power
company for correction of improper voltage or phase unbalance.
HIGH VOLTAGE ENTRANCE
LOW VOLTAGE ENTRANCE
30 1/4"*
12
3/8"
(REMOVE PLUG)
* (6 Ton - 34
1/4"
)
4
1/2
"
47
1/2
"
7
1/2
"
POWER THRU
THE CURB
3.5 DIA.
RETURN
SU
PP
LY
ELECTRICAL ENTRANCE AND THRU CURB
ELECTRICAL ENTRANCE AND THRU CURB
Low Voltage Control Wiring
1. A 24V thermostat must be installed for unit operation.
It may be purchased with the unit or field -supplied.
Thermostats 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
installation instructions packaged with the thermostat.
3. Use #18 AWG wire for 24V control wiring runs not
exceeding 75 feet. Use #16 AWG wire for 24V control
wiring runs not exceeding 125 feet. Use #14 AWG wire
for 24V control wiring runs not exceeding 200 feet. Low
voltage wiring may be National Electrical Code (NEC)
Class 2 where permitted by local codes.
4. Route thermostat wires from sub-base terminals to the
unit. Control wiring should enter through the condenser
panel opening indicated in “Electrical Entrance” figure.
Connect thermostat and any accessory wiring to low
voltage terminal block TB1 in the main control box.
NOTE: Field-supplied conduit may need to be installed
depending on unit/curb configuration. Use #18 AWG solid
conductor wire whenever connecting thermostat wires to
terminals on sub-base. DO NOT use larger than #18 AWG
wire. A transition to #18 AWG wire may be required before
entering thermostat sub-base.
NOTE: Refer to unit wiring diagrams for thermostat hookups.
CIRCULATING AIR AND FILTERS
Ductwork
The supply duct from the unit through a wall may be installed
without clearance. However, minimum unit clearances must
be maintained (see “Clearances” section). The supply duct
should be provided with an access panel large enough to
inspect the air chamber downstream of the heat exchanger.
A cover should be tightly attached to prevent air leaks.
Ductwork dimensions are shown in the roof curb installation manual.
If desired, supply and return duct connections to the unit may
be made with flexible connections to reduce possible unit
operating sound transmission.
CONDENSATE DRAIN CONNECTION
Condensate Drain Connection
A 3/4” female NPT drain connection is supplied on the end of
the unit and bottom of the drain pan for condensate piping.
An external trap must be installed for proper condensate
drainage.
DRAIN
CONNECTION
FLEXIBLE
TUBING-HOSE
OR PIPE
3" MINIMUM
A POSITIVE LIQUID
SEAL IS REQUIRED
DRAIN CONNECTION
2" MINIMUM
UNIT
DRAIN CONNECTION
Install condensate drain trap as shown. Use 3/4” drain line
and fittings or larger. Do not operate without trap.
Horizontal Drain
Drainage of condensate directly onto the roof may be
acceptable; refer to local code. It is recommended that a small
drip pad of either stone, mortar, wood or metal be provided
to prevent any possible damage to the roof.