Table of Contents
Advertisement
Filter Installation
YSC060AD unit ships with one inch (25
mm) filters. The quantity of filters is de-
termined by unit size. Access to the fil-
ters is obtained by removing the indoor
fan access panel. To modify the unit's
filter rack to accept two inch (50 mm)
filters, remove the L-shaped angle at-
tachment screws and rotate the angles
90 degrees.
Reinstall the screws and insert new fil-
ters. Refer to the unit Service Facts
(shipped with each unit) for filter re-
quirements.
Note:
Do not operate the unit without filters.
Field Installed Power Wiring
An overall dimensional layout for the
field installed wiring entrance into the
unit is illustrated in Figure 2. To insure
that the unit's supply power wiring is
properly sized and installed, follow the
guidelines outline d below.
Note:
All field installed wiring must conform to
State and Local codes.
Verify that the power supply available is
compatible with the unit's nameplate
ratings. The available supply power
must be within 10% of the rated voltage
stamped on the nameplate. Use only
copper conductors to connect the
power supply to the unit.
USE COPPER CONDUCTORS ONLY!
UNIT TERMINALS ARE NOT DE-
SIGNED TO ACCEPT OTHER TYPES
OF CONDUCTORS.
Failure to do so may cause damage
to the equipment.
22
Installation
Main Unit Power Wiring
1. The unit is not equipped with an op-
tional factory installed nonfused dis-
connect switch or circuit breaker. A
field supplied disconnect switch must
be installed at or near the unit in ac-
cordance with the State and Local
codes.
2. Location of the applicable electrical
service entrance is illustrated in Fig-
ure 2. Complete the unit's power wir-
ing connections onto either; the main
terminal wire connectors inside the
unit control panel, the field supplied
nonfused disconnect switch (UCD)
or circuit breaker (UCB). Refer to the
customer connection diagram that is
shipped with the unit for specific ter-
mination points.
3. Provide proper grounding for the unit
in accordance with local and national
codes.
Field Installed Control Wiring
An overall layout of the various control
options available with the required
number of conductors for each control
device is illustrated in Figure 6.
Note:
All field wiring must conform to state
and local codes.
Control Power Transformer
The 24 volt control power transformers
are to be used only with the accesso-
ries called out in this manual. Trans-
formers rated greater than 50 VA are
equipped with internal circuit breakers.
If a circuit breaker trips, turn "Off" all
power to the unit before attempting to
reset it.
HAZARDOUS VOLTAGE
DISCONNECT ALL ELECTRIC
POWER INCLUDING REMOTE DIS-
CONNECTS BEFORE SERVICING.
Failure to disconnect power before
servicing can cause severe personal
injury or death.
The transformer is located in the con-
trol panel. The circuit breaker is lo-
cated on the left side of the trans-
former and can be reset by pressing in
on the black reset button.
Controls using 24 VAC
Before installing any connecting wiring,
refer to Figure 2-1 for the electrical ac-
cess locations provided on the unit and
Table 2 for AC conductor sizing guide-
lines, and;
a. Use copper conductors unless other-
wise specified.
b. Ensure that the AC control wiring be-
tween the controls and the unit's
termination point does not exceed
three (3) ohms/conductor for the
length of the run.
Note: Resistance in excess of 3 ohms
per conductor may cause component
failure due to insufficient AC voltage
supply.
c. Be sure to check all loads and con-
ductors for grounds, shorts, and mis-
wiring.
d. Do not run the AC low voltage wiring
in the same conduit with the high
voltage power wiring.
e. Route low voltage wiring per illustra-
tions on page 24.
RT-SVX31A-EN
Hide quick links:
Advertisement
Table of Contents
Troubleshooting
