Carrier Aquazone 50WD handleiding
Handleiding
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Fig. 22 — Waterside Freeze Sensor Location
(FREEZE 1) — Vertical Configuration Shown
Fig. 23 — Air Coil Freeze Sensor Location
(FREEZE 2) — Vertical Configuration Shown
HIGH CONDENSATE LEVEL SHUTDOWN
The condensate overflow protection sensor is located in the drain
pan of the unit and connected to the “COND” terminal on the
UPM board (see Fig. 21, item 8).
Anti-Short Cycle Timer
Five minute delay on break timer to prevent compressor short
cycling.
Random Start Time Delay
Each controller has an unique random start delay ranging from
270 to 300 seconds on initial power up to reduce the chance of
multiple units simultaneously starting at the same time after power
up or after a power interruption, in order to avoid creating a large
electrical spike.
Low-Pressure Bypass Timer
If the compressor is running and the low pressure switch opens,
the controller will keep the compressor On for 120 seconds. After
two minutes if the low-pressure switch remains open, the control-
lers will shut down the compressor and enter a soft lockout. The
compressor will not be energized until the low-pressure switch
closes and the anti-short cycle time delay expires. If the low-pres-
sure switch opens two or four times in one hour, the unit will enter
a hard lockout. In order to exit hard lockout power to the unit
would need to be reset. The reset signal is either a Y or R signal
depending on the position of the DIP switch as shown in Table 13.
If the reset is set to R, the board must be manually powered off and
powered back on to exit the hard lock out.
Brownout/Surge/Power Interruption Protection
The brownout protection in the UPM board will shut down the
compressor if the incoming power falls below 18 vac. The com-
pressor will remain Off until the voltage is above 18 vac and Anti-
Short Cycle Timer (300 seconds) times out. The unit will not go
into a hard lockout.
Alarm Output
Alarm output is Normally Open (NO) dry contact. If pulse is se-
lected the alarm output will be pulsed. The fault output will de-
pend on the DIP switch setting for “Alarm”. If it is set to
“CONST”, a constant signal will be produced to indicate a fault
has occurred and the unit re-quires inspection to determine the
type of fault. If it is set to “PULSE” a pulse signal is produced and
a fault code is detected by a remote device indicating the fault.
(For blink code explanation, see Table 14). The remote device
must have a analog input with malfunction detection capability to
interpret PULSE signal when the UPM board is set to “PULSE”.
Test Mode
A test DIP switch is provided to reduce all time delays settings to
10 seconds during troubleshooting or verification of unit
operation.
INTELLIGENT ALARM RESET
If a fault condition is initiated, the five minute delay on break time
period is initiated and the unit will restart after these delays expire.
During this period the fault LED will indicate the cause of the
fault. If the fault condition still exists or occurs two or four times
(depending on “2” or “4” settings for Lockout DIP Switch) before
60 minutes, the unit will go into a hard lockout and requires a
manual lockout reset. See Fig. 24.
HARD LOCKOUT RESET
A hard lockout can be reset by turning the unit thermostat off and
then back on when the “RESET” DIP switch is set to “Y” or by
shutting off unit power at the circuit breaker when the “RESET”
DIP switch is set to “R”.
NOTE: The blower motor will remain active during a lockout
condition.
IMPORTANT: If 24 vac output is needed R must be wired to
ALR-COM terminal; 24 vac will be available to the ALR-OUT
terminal when the unit is in the alarm condition.
IMPORTANT: Operation of unit in test mode can lead to
accelerated wear and premature failure of components. The
“TEST” switch must be set back to “NO” after trouble-
shooting/servicing.
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Productinformatie
| Merk | Carrier |
| Model | Aquazone 50WD |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 15865 MB |
