Trane Foundation GCC 090-150, Инструкция по установке, эксплуатации и обслуживанию

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8 RT-SVX069D-EN
Note: Do not use the unit’s heater for temporary heat
without first completing the start-up.
The manufacturer will not assume any responsibility for
equipment damage resulting from condensate
accumulation on the unit’s electrical and/or mechanical
components.
Unit Description
Before shipment, each unit is leak tested, dehydrated,
charged with refrigerant and compressor oil, and run tested
for proper control operation.
Direct-drive, vertical discharge condenser fans are
provided with built-in thermal overload protection.
System Input Devices and Functions
The unit must have a thermostat input in order to operate.
The descriptions of the following basic input devices used
within the unit are to acquaint the operator with their
function as they interface with the various features. Refer to
the unit’s electrical schematic for the specific device
connections. The following controls are available from the
factory for field installation.
Drain Pan Condensate Overflow Switch
(Optional)
This input incorporates the Condensate Overflow Switch
(COF) mounted on the drain pan. When the condensate
level reaches the trip point, the COF relay energizes and
opens the 24 Vac control circuit, disabling the unit. A delay
timer prevents the unit from starting for 7 minutes.
Discharge Line Thermostat Control
The high pressure controls and the discharge line
thermostat signals are wired in series and connected to the
safety input of the LSD. The compressor contactor coil is
connected to the ‘CC’ terminal of the LSD. If the high
pressure control switch or the discharge line thermostat is
open, the 24 Vac signal to the SI input of the LSD is
interrupted and the compressor contactor coil supply is
disabled by the LSD. It has an automatic lockout.
The high pressure controls and discharge line thermostats
are wired in the system protection detection port. If the high
pressure control switch or the discharge line thermostat is
open, the main control board will turn off the compressor of
the corresponding system. There is no automatic lockout.
Evaporator Frost Control
This input incorporates the Evaporator Frost Control
mounted in the indoor coil and can be activated by closing
a field supplied contact installed in parallel with the Frost
Control.
If this circuit is open before the compressor is started, the
compressor will not be allowed to operate. Anytime this
circuit is opened for 5 continuous seconds during
compressor operation, the compressor for that circuit is
immediately turned “Off”. The compressor will not be
allowed to restart for a minimum of 3 minutes should the
Frost Control close.
Sensors
High Temperature Sensor (BAYFRST003*)
This sensor connects to the Emergency Stop Input on the
LTB and provides high limit “shutdown” of the unit. The
sensor is used to detect high temperatures due to fire in the
air conditioning or ventilation ducts. The sensor is designed
to mount directly to the sheet metal duct. Each kit contains
two sensors. The return air duct sensor (X1310004001) is
set to open at 135°F.
The supply air duct sensor (X1310004002) is set to open at
240°F. The control can be reset after the temperature has
been lowered approximately 25°F below the cutout
setpoint.
Thermostat (TCONT802AS32DA)
This thermostat is a multi-stage 3 heat/2 cool,
autochangeover digital display thermostat. It is a
programmable thermostat, and a 7-day programmable stat
with night setback shall be available. In addition, it is wall
mounted.
Thermostat (TCONT402AN32DA)
This thermostat is a multi-stage 3 heat/2 cool, auto
changeover digital display thermostat. It is a
nonprogrammable, wall-mounted thermostat, and it can be
used for economizer operation.
Variable Frequency Drive (VFD)
Variable Frequency Drive (VFD) can automatically adjust
the indoor fan motor speed in sequence with the unit’s
ventilation, cooling and heating operation. Per ASHRAE
90.1-2016 and IECC*-2015 standards, during the first
stage of cooling operation the VFD will adjust the fan motor
to provide 100%/70%/65% of the design airflow rate for the
unit, according to the outdoor ambient temperature. When
the call for the second stage of cooling is required, the VFD
will allow the design airflow rate for the unit established
(100%). During the heating mode, the VFD will allow total
design airflow rate (100%) operation. During ventilation
mode, the VFD will allow total design airflow rate (100%)
operation.
General Information