Chiller Familiarization; Installation; Inspect Shipment - Carrier AquaEdge 19DV Series Installation Instructions Manual

INTRODUCTION
General
The 19DV unit is factory assembled, wired, and leak tested. In-
stallation consists primarily of establishing water and electrical
services to the machine. The rigging, installation, field wiring,
field piping, and insulation of waterbox covers are the respon-
sibility of the contractor and/or customer. Carrier has no instal-
lation responsibilities for the equipment. The refrigerant charge
will be installed by the Carrier Start-up Technician during the
start-up process.
Job Data
Necessary information consists of:
• job contract or specifications
• machine location prints
• rigging information
• piping prints and details
• field wiring drawings
• starter manufacturer's installation details
• Carrier certified print

CHILLER FAMILIARIZATION

Chiller Information Nameplate
The information nameplate is located on the left side of the chiller
control panel. Refer to Fig. 1 for model number identification.
System Components
The main components include the evaporator and condenser
heat exchangers in separate vessels, compressor, refrigerant lu-
brication system, control panel, economizer, VFD, and purge
system.
Evaporator
This heat exchanger (also known as the evaporator) is located
underneath the compressor. The evaporator is maintained at
lower refrigerant temperature/pressure so evaporating refriger-
ant can remove heat from water flowing through its internal
tubes.
Condenser
This heat exchanger operates at a higher refrigerant tempera-
ture/pressure than the evaporator and has water flowing
through its internal tubes in order to remove heat from the re-
frigerant.
Compressor
This component maintains system temperature and pressure
differences and moves the heat carrying refrigerant from the
evaporator to the condenser. The 19DV unit has a back to back
two-stage, direct drive, and economized compressor.
Economizer
This chamber reduces the refrigerant temperature to an intermedi-
ate level between the evaporator and condenser vessels. In the
economizer, vapor is separated from the liquid, the separated va-
por flows to the inlet of the second stage of the compressor, and
the liquid flows into the evaporator. The energy removed from the
vaporized refrigerant in the economizer allows the liquid refriger-
ant in the evaporator to absorb more heat when it evaporates and
benefits the overall cooling efficiency cycle.
VFD
The VFD provides a pulse width modulated signal that results
in variable frequency and voltage to the compressor motor. It is
controlled and monitored from the PIC5 control system.
Purge System
The purge is an independent assembly located under condens-
er. The 19DV chiller system components normally operate in a
vacuum. The purge assembly will automatically remove air
and other non-condensables which may have leaked into the
system to maintain chiller performance. It is controlled through
the PIC5 control system.
PIC5 Touch Screen Panel
This panel is the user interface for controlling the chiller and
has the following functions:
• Chiller operation
• Chiller diagnostic
• Chiller status display
• Chiller parameter configuration
• Open protocol interface to outside building management
system (BMS)
Control Panel
This control panel includes the input and output boards (IOB),
control transformer, relays, contactors, and circuit breakers. It
provides the power distribution and protection to the electrical
component installed on chiller, and has the following functions:
• Communication with PIC5 touch screen
• Communication with purge panel
• Communication with VFD
• Sensor input and outputs
• Actuators control
• Refrigerant pump control
Purge Control Panel
The purge panel includes an input and output boards, control
transformers, relays, and contactors. It provides the power dis-
tribution and protection to the electrical components which in-
stalled in the purge system and has the following functions:
• Communication with PIC5 touch screen
• Sensor input and outputs
• Solenoid valve control
• Control of purge compressor, vacuum pump, heater, and
fan control
Lube Assembly
The lube assembly refers to the filter, strainer and pump pack-
age with automatic valve actuator control located under the
condenser. The objective of the lube assembly is to provides
lubricating liquid refrigerant to the compressor bearings.

INSTALLATION

Step 1 — Receive the Machine

INSPECT SHIPMENT

Do not open any valves or loosen any connections. The
19DV machine may be shipped with a nitrogen holding
charge. Damage to machine may result.
1. Inspect for shipping damage while machine is still on ship-
ping conveyance. If machine appears to be damaged or has
been torn loose from its anchorage, have it examined by
transportation inspectors before removal. Forward claim
papers directly to transportation company. Manufacturer is
not responsible for any damage incurred in transit.
3
CAUTION