Prozone ARL Series, Руководство по установке

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FACTORY INSTALLED ACCESSORIES
COMPRESSOR SOUND WRAP
All (-)ARL and (-)ASL units are factory equipped with compressor sound wraps to
reduce operating noise levels.
COMPRESSOR CRANKCASE HEATER (CCH)
The 5-ton (-)ARL is factory equipped with a crankcase heater. Refrigerant migration
during the off cycle can result in a noisy start up. The crankcase heater minimizes
refrigeration migration and helps reduce start up noise or bearing “wash out.”
The heater is located on the lower half of the compressor shell. Its purpose is to
drive refrigerant from the compressor shell during low outdoor ambient conditions
(below 75°F), thus preventing damage to the compressor during start-up. At initial
start-up or after extended shutdown periods during low outdoor ambient conditons
(below 75°F), make sure the heater is energized for at least 12 hours before the
compressor is started. (Disconnect switch on and wall thermostat off.)
COMFORT ALERT™
The Comfort Alert™ diagnostics module is for troubleshooting air conditioning sys-
tem failures. By monitoring and analyzing data from the compressor and the ther-
mostat demand, the module can accurately detect the cause of electrical and sys-
tem-related failures without any external sensors. A flashing LED indicator commu-
nicates the ALERT code and guides the service technician more quickly and accu-
rately to the root cause of a problem.
POWER LED (Green): indicates voltage is present at the power connection of the
module.
ALERT LED (Yellow): communicates an abnormal system condition through a
unique flash code. The ALERT LED will flash a number of times consecutively,
pause and then repeat the process. The number of consecutive flashes, defined
as the Flash Code, correlates to a particular abnormal condition. Detailed
descriptions of specific ALERT Flash Codes are shown in Figure 5.
TRIP LED (Red): indicates there is a demand signal from the thermostat but no
current to the compressor is detected by the module. The TRIP LED typically
indicates the compressor internal overload protector is open or may indicate
missing high voltage supply power to the compressor.
INTERPRETING THE DIAGNOSTIC LEDS
When an abnormal system condition occurs, the Comfort Alert module displays the
appropriate ALERT and/or TRIP LED. The yellow ALERT LED will flash a number
of times consecutively, pause and then repeat the process. To identify a Flash
Code number, count the number of consecutive flashes.
IMPORTANT: Every time the module powers up, the last ALERT Flash Code that
occurred prior to shut down is displayed for one minute. The module will continue to
display the flash code until the condition returns to normal or if 24VAC power is
removed from the module.
CONTROL BOX COVER
The control box cover allows access to the Comfort Alert™ status LEDs. An abbre-
viated Comfort Alert™ diagnostic chart is provided on the control box cover.
FIGURE 4
LED DESCRIPTION
SOLID COPPER WIRE - AWG.
3.0 16 14 12
2.5 16 14 12
2.0 18 16 14
50 100 150
Length of Run - Feet (1)
Thermostat Load - Amps
(1) Wire length equals twice the run distance.
NOTE: Do not use control wiring smaller than No. 18 AWG between
thermostat and outdoor unit.
TABLE 7
FIELD WIRE SIZE FOR 24 VOLT THERMOSTAT CIRCUITS
TABLE 8
CONTROL WIRING SYMBOLS
Symbol Function
R 24VAC
C 24VAC common
Y/Y1 First stage compressor
➀
Y
L
First stage compressor
➁
Y
H
Second stage compressor
➁
G Fan
W 1 st stage heating
W2 2 nd stage heating
E Emergency heat*
ODD On-demand dehumidification
➀➂
B* Heat pump*
➀
(-)BHK, (-)BHL, (-)BHM & (-)BHN air
➀
handler applications
➁
(-)GFD & (-)GGD Furnace applications
➂
(-)GLL & (-)GPL furnace applications
* Terminal is not used on condensing unit
control wiring
.