Entering Chilled Water Piping; Flow Switch; Leaving Chilled Water Piping; Water Strainer - Trane CGAM Installation & Operation Manual

Installation - Mechanical

Entering Chilled Water Piping

• Air vents (to bleed air from system)
• Water pressure gauges with shutoff valves
• Vibration eliminators
• Shutoff (isolation) valves
• Thermometers (if desired)
• Relief valve

Leaving Chilled Water Piping

• Air vents (to bleed air from system)
• Water pressure gauges with shutoff valves
• Vibration eliminators
• Shutoff (isolation) valves
• Thermometers (if desired)
• Balancing valve
NOTICE:
Water Damage!
Standard pressure is 72.5 Psig for all factory installed
components on the suction side of water pump.
Standard pressure of components on the discharge
side of water pump is 145 Psig. You MUST drain the
system FIRST before releasing the pressure. Failure to
do so could result in water spray which could cause
equipment and/or property damage.

Water Strainer

The water strainer is factory-installed with taps for the
pressure gauges on the inlet and outlet. Install pressure
gauges in order to measure differential pressure across
the filter.This will help to determine when it is necessary
to clean the water strainer.
CG-SVX17E-EN

Flow Switch

NOTICE:
Equipment Damage!
Flow switch is on a 24V circuit. Do NOT apply 120V to
the flow switch. Incorrect voltage application could
cause damage to the flow switch.
The flow switch is factory-installed and programmed
based on the operating conditions submitted with the
order.The leaving evaporator temperature, fluid type and
fluid concentration affect the selected flow switch. If the
operating conditions on the job site change, the flow
switch may need to be replaced.
The sensor head includes 3 LEDs, two yellow and one
green.Wait 15 seconds after power is applied to the sensor
before evaluating LEDs for flow status. When wired
correctly and flow is established, only the green LED
should be lit. Following are the LED indicators:
• Green ON, both yellow OFF — Flow
• Green and outside yellow ON — No Flow
• Center yellow ON continuously — Miswire
Factory installed jumper wire W11 must be removed if
using auxiliary contacts and/or additional proof of flow.
See schematics in CGAM-SVE01*-EN for more details.
Note: Use caution when connecting the auxiliary
contacts.Terminals 1X5-3 and 1X5-9 are to be used
for field connections of auxiliary contacts.
Inadvertant use of 1X5-4 and 1X5-9 will result in a
FALSE FLOW indication.
NOTICE:
Equipment Damage!
Incorrect wiring of auxiliary contacts could cause
equipment damage.
If using auxiliary flow sensing, both yellow LEDs come on
initially when flow is stopped.The center yellow LED will
turn off after approximately 7 seconds.The LED indicators
are otherwise the same as indicated above.

Evaporator Label

The BPHE evaporator label, including barcode, is located
under the insulation, in the locations shown in
p. 48. Insulation backing over this area has not been
removed, so that it can be rolled back to access BPHE label.
Figure 47,
47