Installation
SO-SVN038A-EN 21
Heat Recovery/Aux COND Option
When heat recovery/Aux COND option is selected, a DHVBI
LLID (BRD04874) is required.
Note: As 1A29, heat recovery/Aux COND flow switch wiring,
ref. ref. 50712795, 50712799, 50712802, 50712805 or
50712806 depend on different unit. For details, see
Table 3, p. 28.
Energy Meter Option
The Trane energy meter provides high accuracy data of power,
volts and amps to Symbio™ 800 controls. All data measured
by the meter is communicated via Modbus® to the unit control
system. Refer to BAS-SVN224*-EN for detailed information.
Note: This option does not apply to HDWA and CVHM
production.
The meter is connected to line voltage of up to 480 volts and
should be mounted within the starter cabinet. It is provided with
a mounting bracket that can be mounted on the DIN rail or
directly on the cabinet wall.
The meter is connected to Modbus communications and is
self-powered by the unit voltage potential inputs. Review meter
literature for setup and operation details.
Modbus communications is by shielded 14 – 26 AWG cable
from meter to Symbio module. Install 120 OHM resistors at first
and last modules on Modbus daisy chain.
Figure 29. Schematic of heat recovery/AUX cond option
1A29 DUAL HIGH VOLTAGE BINARY INPUT
4
4
1
RED
1
J1
J11
J2
2
1
1
2
J3
2U
1X1-7
TO 1X1-5
1X1-15
TO 1X1-12
65A
5S16
SECONDARY
5S15
PRIMARY
64A
1A28 DUAL ANALOG I/O
OPTIONAL
INPUT 1
OUTPUT 1
2
1
GND
INPUT 2
OUTPUT 2
GND
4
3
J2
5
6
HEAT RECOVERY
5B3 CUSTOMER PROVIDE
4-20mA
FLOW
METER
24VDC
1A2 J3-1
0V
1A2 J3-2
OUTPUT
SIGNAL
AUX COND FLOW METER
IPC BUS
AND WATER FLOW DETECTION
AUX COND FLOW METER
OPTIONAL
OPTIONALREQUIRED
5AE 65A
IPC BUS
WATER PRESSURE
AUX COND LEAVING
HEAT RECOVERY
TRANSDUCER
OPTIONAL
WATER PRESSURE
AUX COND ENTERING
HEAT RECOVERY
TRANSDUCER
OPTIONAL
4
4
RED
J11
1
J1
1
AUX COND FLOW METER
CUSTOMER PROVIDE 4-20MA INPUT
AUX COND WATER FLOW DETECTION
-
Pg
+
SIG
4B5
-
Pg
+
SIG
4B6
3
Figure 30. Energy meter
Figure 31. Rogowski CTs
Figure 32. Mount the energy meter with strap tunnel on
the rail
Figure 33. Shielded cable
–
S
+
Shielded Wire
120 terminators on the first/last devices of daisy
chain
Ω
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