Trane CVHH CenTraVac, Installation, Operation And Maintenance Manual

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30 CVHH-SVX001G-EN
X39003892001A
N No otte e:: Graphic labels (shown above) are used for CE
application only.
IIm mp po orrtta an ntt::
• Before servicing, disconnect all
power sources and allow at least 30
minutes for capacitors to discharge.
• All electrical enclosures—unit or
remote—are IP2X.
5. Apply power to the chiller control panel to verify the
Flow Control Monitor has power and the Low Volt
Broken Wire Relay light is NOT lit.
6. Remove all air from the piping circuit prior to
adjusting the low water flow setpoint.
7. Reduce the water flow to the minimum allowable
flow and adjust the Flow setting on the Flow
Control Monitor (see item labeled “7” in the
following figure). Adjusting the “Flow”
potentiometer clockwise (+) reduces the flow
setting cutout and adjusting counterclockwise (-)
increases the flow setting cutout.
N No otte e:: The “Temp” potentiometer on the ifm
efector ® control module has no effect in
Trane application. It is NOT necessary to
make adjustments to the “Temp”
potentiometer.
8. After the cutout setting is adjusted, the cutout
setpoint will be indicated with a yellow light on the
Flow Control Monitor LED bar graph display. When
the water flows are higher than the cutout, a green
light will indicate proper flow status. If the flows fall
below the cutout setpoint, a red light will indicate
low/no flow status.
Figure 14. ifm efector ® ® flow sensing device terminal
connection
7
N NO OT TIIC CE E
P Prro oo off o off F Fllo ow w S Sw wiittcch h!!
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d da am ma ag ge e..
E Ev va ap po orra atto orr a an nd d cco on nd de en nsse err w wa atte err cciirrccu uiittss rre eq qu uiirre e
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tto o sstto op p o on n a a sse ecco on nd da arry y lle ev ve ell o off p prro otte eccttiio on n..
•• F Frre eq qu ue en ntt ccy ycclliin ng g o on n tth he esse e h hiig gh he err lle ev ve ell
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tth he e cch hiilllle err..
Evaporator and condenser proof of flow switches are
required. These switches are used with control logic to
confirm flow prior to starting a unit and to stop a
running unit if flow is lost. For troubleshooting, a
viewable diagnostic is generated if a proof of flow
switch does not close when flow is required.
Evaporator and Condenser
Water Piping
The following two figures illustrate the recommended
(typical) water piping arrangements for the evaporator
and condenser.
IIn nsstta alllla attiio on n:: W Wa atte err P Piip piin ng g