Dual High Head Pump Package - Trane CGAM Installation & Operation Manual

Installation - Mechanical

Dual High Head Pump Package

Pump package includes: two high head pumps, VFD,
expansion vessels, drainage valves, shut-off valves at
entering and leaving connections. See
The pump package is single point power integrated into
the chiller unit power with a separate factory wired control
panel.The control of the pump is integrated into the chiller
controller.
Important: When pump package is selected, the chiller
MUST control the pumps.
The CH530 displays evaporator pump starts and run-
times. Freeze protection down to an ambient of
-20°F (-29°C) is included as standard.The cold parts of the
pump package will also be insulated. Designed with one
redundant pump, the chiller controls both pumps through
a lead/lag and failure/recovery functionality.
A variable speed drive is installed in an additional panel to
control the pump.The inverter should be adjusted by the
customer upon start up to balance the system flow and
head requirements.The purpose is to save on wasted
pump energy caused by a traditional balancing valve.
Note: Speed command is also available for customer-
provided variable flow input.
Figure 60. Pump package unit schematic
4
C
Table 26. Pump package components
Item Description
1 Centrifugal Pump (Dual pumps std)
2 Water Strainer
3 Butterfly Valve
4 Inverter
5 Valve for Pressure Point
6 Expansion Tank
7 N/A
8 Evaporator heat exchanger
CG-SVX17E-EN
Figure 60.
Item Description
9 Automatic Air Vent
10 Manual Air Bleed
11 Drain Valve
12 Water Heater
13 Buffer Tank (Optional)
Figure 59. Field water piping pump package unit
3
B
CGAM Unit
with Pump Package
Option
3
1 - Bypass Valve
2 - Isolation Valve
3 - Vibration Eliminators
A - Isolate unit for initial water loop cleaning
Table 25. Field water piping components - unit with
pump package option
Item Description
1 Bypass Valve
2 Isolator Valve
3 Vibration Eliminator
A Isolate unit for initial water loop cleaning
B See Figure 60 for CGAM pump package unit schematic.
Insulated Water Line
Item
Pi Gauge
FT Water Flow Switch
T1 Evap Water Inlet Temp Sensor
T2 Evap Water Outlet Temp Sensor
A Optional Buffer Tank
B Insulated Pump Box
C Brazed plate differential pressure gauge and piping not supplied.
Must account for water head height difference when calculating
brazed plate pressure differential.
2
Building/
1
Process Load
A
2
CUSTOMER PIPING
INLET
OUTLET
Water Line
Description
57