Carrier Aquazone 50WD handleiding
Handleiding
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Fig. 21 — Unit Protection Module (UPM)
UPM Standard Safeties and Alarms
HI AND LOW REFRIGERANT PRESSURE PROTECTION
• High-pressure switch located in the refrigerant discharge
line and wired across the HPC (High-Pressure Switch
Connection) terminals on the UPM.
• Low-pressure switch located in the unit refrigerant suction
line and wired across the LPC (Low-Pressure Switch Con-
nection) terminals (LPC1 and LPC2) on the UPM.
WATER COIL FREEZE PROTECTION
Waterside freeze protection sensor, mounted close to condensing
water coil, monitors refrigerant temperature between condensing
water coil and thermal expansion valve (see Fig. 22.)
If temperature drops below or remains at freeze limit trip for 120
seconds, the controller will shut down the compressor and enter
into a soft-lockout condition. The default freeze limit trip is 25°F;
however, this can be changed to 15°F by flipping DIP switch SW1
(see Fig. 21, Item 10, Fig. 24, and Table 13).
NOTE: The UPM Board Dry Contacts are Normally Open (NO).
AIR COIL FREEZE PROTECTION
Air coil freeze protection sensor, mounted between the thermal ex-
pansion device and the evaporator, monitors refrigerant tempera-
ture between the evaporator coil and thermal expansion valve (see
Fig. 23). If temperature drops below or remains at the freeze limit
trip for 30 seconds, the controller will shut down the compressor
and enter into a soft-lockout condition. The default freeze limit
trip is 25°F, this can be changed to 15°F by flipping DIP switch
SW1 (see Fig. 21, Item 10, Fig. 24, and Table 13.)
LEGEND
1 — Compressor Contact Output
2 — High-Pressure Switch Connection
3 — Call for Compressor (Y1)
4 — Low Pressure Switch Connection
5 — Water Coil Freeze Connection (Freeze 1)
6 — UPM Status LED Indicator (Fault Status)
7 — Air Coil Freeze Connection (Freeze 2)
8 — Condensate Overflow Sensor Connection
9 — Ground
10 — UPM Settings DIP Switch (SW1)
11 — A2L Sensor
12 — 24 vac Power Common
13 — 24 vac Power Input
14 — UPM Standoff
15 — Power LED
16 — Fan
17 — Dry Contact
1
2
3
4
17
16
15
14
13
12
11
10
5
6
7
8
9
Table 13 — UPM DIP Switch Selectable Positions
TOGGLE FUNCTION ON OFF
FACTORY
DEFAULT
1 Lockout 4 2 2
2 Reset R Y Y
3 Alarm Cont Pulse Pulse
4 Test Yes No No
5 Freeze 1 15°F 25°F 25°F
6 Freeze 2 15°F 25°F 25°F
7 Pump ON OFF OFF
IMPORTANT: The freeze sensor will not guard against the
loss of water. A flow switch is recommended to prevent the
unit from running if water flow is lost or reduced.
IMPORTANT: If the unit is employing a fresh water system
(no anti-freeze protection), it is extremely important to have
the Freeze 1 set to 25°F (DIP Switch SW1 set to Off) in
order to shut down the unit at the appropriate leaving water
temperature and protect your heat pump from freezing if a
freeze sensor is included.
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Productinformatie
| Merk | Carrier |
| Model | Aquazone 50WD |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 15865 MB |
