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Mount transducers on the entering and leaving side water
box locations with the transducer facing upwards and
connect to unit control buss. After system is filled, loosen
the transducer in its threaded fitting. Then crack the
isolation valve until water starts dripping from threads.
Close the valve and re-tighten the transducer, and then re-
open the valve for use.
Figure 47. Standard accuracy flow meter wiring, ref.
50712792
+
OPTIONAL
SIG
EVAP ENTERING
Pg
4BP4
WATER PRESSURE
TRANSDUCER
-
+
OPTIONAL
SIG
EVAP LEAVING
Pg
4BP5
WATER PRESSURE
TRANSDUCER
-
High Accuracy Customer Meter Option
The high accuracy customer meter option provides an
analog input/output LLID to monitor a customer provided
high accuracy meter 0-10 Vdc or 4 – 20 mA outputs.
(Rosemont, etc.) This option allows monitoring of
condenser, evaporator flow and auxiliary heat
exchangers.
Install needed DAIO LLID(s) (BRD04875) in CVRF control
panel:
1. LLID (1A21) is needed for EVAP and COND water flow.
Connect flow meter wires to 1A21-J2-1 and 1A21-J2-1
for EVAP, 1A21-J2-4 and 1A21-J2-5 for COND.
2. LLID (1A28) is need for HR Aux/COND water flow.
Connect flow meter wires 1A28-J2-1 and 1A28-J2-1 for
HR flow or Aux COND.
Figure 48. High accuracy customer meter flow meter
wiring, ref. 50712792
OPTIONAL
1A21 DUAL ANALOG I/O
OPTIONAL WATER FLOW METER
INPUT 2
OUTPUT 2
INPUT 1
OUTPUT 1
J11
IPC BUS
4
1
4
1
J1
CDUB-SVN001B-EN
IPC BUS
+
OPTIONAL
SIG
COND ENTERING
Pg
4BP6
WATER PRESSURE
TRANSDUCER
-
+
OPTIONAL
SIG
COND LEAVING
Pg
4BP7
WATER PRESSURE
TRANSDUCER
-
FLOW METER
CUSTOMER PROVIDE 4-20MA INPUT
5B2 CUSTOMER PROVIDE
COND FLOW METER
24VDC
1A2 J3-1
GND
6
FLOW
SIGNAL
METER
OUTPUT
0V
4-20mA
1A2 J3-2
5
4
J2
24VDC
1A1 J3-1
GND
3
FLOW
SIGNAL
METER
OUTPUT
0V
4-20mA
1A1 J3-2
2
1
5B1 CUSTOMER PROVIDE
EVAP FLOW METER
Heat Recovery/Aux COND Option
When heat recovery/Aux COND option is selected, a
DHVBI LLID (BRD04874) is required as 1A29 and wires
matrix show as following:
Table 3.
Wire matrix
Wire #
AWG
14B
16
1A29-J3-2
2K
16
1A29-J3-1
Figure 49. Heat recovery/Aux COND flow switch wiring
1X1-7
1A29 DUAL HIGH VOLTAGE BINARY INPUT
OPTIONAL
2
HEAT RECOVERY
J3
AUX CONDENSER
WATER FLOW SWITCH
1
2
J2
1
J11
4
1
4
1
J1
Energy Meter Option Installation
The Trane energy meter provides instrument grade
accuracy power, volts and amps monitoring of Symbio
controls installations. It has 1% accuracy for measuring
both real power and energy and reactive power and
energy. All data measured by the meter is communicated
via Modbus to Symbio control system. For more detail
information, refer to BAS-SVN224*-EN.
Figure 50. Energy meter
Figure 51. Rogowski CTs
Installation
From
To
1X1-21
1X2-10
REQUIRED
OPTIONAL
5S11
5K3
P
d
1X1-15
HEAT RECOVERY
AUX CONDENSER
WATER FLOW SWITCH
25
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