Carrier AQUAZONE 50PSH, Инструкция по установке, запуску и обслуживанию

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Fig. 12 — Typical Hot Water Generator Installation
Water Tank Refill
1. Open the cold water supply to the tank.
2. Open a hot water faucet to vent air from the system until
water flows from the faucet, then close.
3. Depress the hot water tank pressure relief valve handle to
ensure there is no air remaining in the tank.
4. Carefully inspect all plumbing for water leaks. Correct as
required.
5. Purge all air from HWG by depressing the Schrader valve on
the HR unit. Allow all air to bleed out until water appears at
the valve.
6. Before restoring the power or fuel supply to the water heater,
adjust the temperature setting on the tank thermostat(s) to
ensure maximum utilization of heat available from the refrig -
eration system and to conserve the most energy. On tanks
with thermostats and both upper and lower elements, the
lower element should be turned down to 100°F, while the
upper element should be adjusted to 120°F. Depending upon
the specific needs of the customer, you may need to adjust the
upper element differently. On tanks with a single thermostat,
lower the thermostat setting to 120°F or the “LOW” position.
After thermostat adjustments are completed, replace access
cover and restore electrical or fuel supply to water heater.
Initial Start-Up
1. Turn on the heat pump. The circulating pump should not run
if the compressor is not running.
2. Turn HWG switch to the “ON” position. The pump will oper -
ate if entering water temperature to HWG is below 120°F.
3. Ensure the temperature difference between the water entering
and leaving the heat recovery is 5 to 15°F.
4. Allow the unit to operate for 20 to 30 minutes to ensure it is
functioning properly. The pump should shut off when the
water temperature entering the generator reaches 120°F.
Step 8 — Wire Field Power Supply
See Fig. 13-32 for typical wiring diagrams. See Tables 4-5 for ad -
ditional electrical data. See Tables 6-8 for data plate specifics.
Please refer to the unit wiring diagram attached to the control pan -
el for field installation.
HIGH VOLTAGE
All field-installed wiring must comply with the National Electric
Code as well as all applicable local codes. Refer to the unit electri -
cal data on the unit nameplate for wire and branch circuit protec -
tion sizing. Supply power voltage and phasing should match the
required voltage and phasing shown on the unit nameplate. Oper -
ating the unit below the minimum voltage, above the maximum
voltage or with incorrect phasing can result in poor system perfor -
mance or damage to the heat pump. All field wiring should be in-
stalled by qualified and trained personnel. Refer to the unit wiring
diagram for field connection requirements.
Power wiring to the heat pump should be enclosed in flexible con -
duit to minimize the transmission of vibration from the unit cabi -
net to the building. For heat pumps with unit mounted disconnect
switches, field power should be connected to the marked terminals
on the disconnect switch. For heat pumps without unit-mounted
disconnect switches (except units with dual power supply), power
is connected to the line (L) side of the compressor contactor and
the ground lug in the unit electrical box.
Transformer Settings for 208/230-v Units
As factory built, all 208/230-v units are wired for 230-v operation.
For jobsites with a 208-v power supply, the primary leads on the
unit transformer will need to be changed from 230-v to 208-v. Re -
fer to the unit wiring diagram for details.
Integrated Electric Heat Option
Factory-installed internal electric heater packages are available for
select units. Two power supplies are required when heater packag -
es are utilized. The power supply for the heater package (located
in the electric heater package control box) provides power for the
heater elements, the blower motor, and the control circuit for the
unit. The power supply for the unit provides power for the com -
pressor. This allows the electric heaters to continue to operate
along with the blower motor in the case of unit compressor and/or
compressor power supply failure.
WARNING
To avoid possible injury or death due to electrical shock, open
the power supply disconnect switch and secure it in an open
position during installation.
CAUTION
Operating the unit with improper line voltage or with exces -
sive phase imbalance is hazardous to the unit and constitutes
abuse and is not covered under warranty.