Step 5 - Wire Low Voltage Connections; Water Freeze Protection; Accessory Connections; Water Solenoid Valves - Carrier AQUAZONE 50PEC09-18 Installation, Start-Up And Service Instructions Manual

50PEC VOLTAGE
UNIT SIZE CODE
1
09 3 208/230-1-60
4
1
12 3 208/230-1-60
4
3 208/230-1-60
15
4
3 208/230-1-60
18
4
LEGEND
FLA — Full Load Amps
HACR — Heating, Air Conditioning and Refrigeration
LRA — Locked Rotor Amps
RLA — Rated Load Amps
Step 5 — Wire Low Voltage Connections
WATER FREEZE PROTECTION — The Aquazone™ con-
trol allows the field selection of source fluid freeze protection
points through jumpers. The factory setting of jumper JW3
(FP1) is set for water at 30 F. In earth loop applications, jumper
JW3 should be clipped to change the setting to 10 F when
using antifreeze in colder earth loop applications. See Fig. 30.
a50-7467tf
AQUAZONE CONTROL (Complete C Control Shown)
Fig. 30 — Typical Aquazone Control Board
Jumper Locations
ACCESSORY CONNECTIONS — Terminal labeled A on
the control is provided to control accessory devices such as
water valves, electronic air cleaners, humidifiers, etc. This
signal operates with the compressor terminal. See Fig. 31.
Refer to the specific unit wiring schematic for details.
NOTE: The A terminal should only be used with 24-v signals
— not line voltage signals.
Terminal Strip
C
A
Fig. 31 — Typical Aquazone Accessory Wiring
Table 2 — Electrical Data — 50PEC Units
COMPRESSOR
MIN/MAX
V-PH-Hz
VOLTAGE
QTY
115-1-60 104/126 1
197/254 1
265-1-60 239/292 1
115-1-60 104/126 1
197/254 1
265-1-60 239/292 1
197/254 1
265-1-60 239/292 1
197/254 1
265-1-60 239/292 1
Typical
Water
24 VAC
Valve
FAN MOTOR
FLA
RLA LRA
8.1 46.5 0.6
4.5 23.0 0.4
3.1 24.0 0.4
10.6 55.8 1.0
5.2 24.0 0.6
4.2 25.0 0.4
6.1 30.0 0.8
4.7 28.5 0.6
6.8 38.0 0.7
6.2 29.0 0.6
WATER SOLENOID VALVES — An
valve(s) should be used on ground water installations to shut
off flow to the unit when the compressor is not operating. A
slow closing valve may be required to help reduce water
hammer. Figure 31 shows typical wiring for a 24-vac external
solenoid valve. Figures 32 and 33 illustrate typical slow closing
water control valve wiring for Taco 500 Series and Taco ESP
Series valves. Slow closing valves take approximately 60 sec.
to open (very little water will flow before 45 sec.). Once fully
open, an end switch allows the compressor to be energized
(only on valves with end switches). Only relay or triac based
electronic thermostats should be used with slow closing valves.
When wired as shown, the slow closing valve will operate
properly with the following notations:
1. The valve will remain open during a unit lockout.
2. The valve will draw approximately 25 to 35 VA through
the "Y" signal of the thermostat.
IMPORTANT: Connecting a water solenoid valve can
overheat the anticipators of electromechanical thermo-
stats. Only use relay based electronic thermostats.
1
THERMOSTAT
Fig. 32 — AMV Valve Wiring
Fig. 33 — Taco SBV Valve Wiring
30
TOTAL UNIT MIN CIRCUIT
FLA AMPS
8.6 10.7
4.9 6.0
3.5 4.3
11.6 14.3
5.8 7.1
4.6 5.7
6.9 8.4
5.3 6.5
7.5 9.2
6.8 8.4
external
a50-8441
2
AMV
3
TACO VALVE
HEATER SWITCH
MAX
FUSE/HACR
15
15
15
25
15
15
15
15
15
15
solenoid
a50-8442