Trane CXAU - Page 25

Installation - Electrical
25PKGP-SVX19A-EN
TB2
40 41 42 43 50 51 52 53 58 59 60 61 10 11 12 13 14 15 16 17 18 19
U V W N
U V W N
TB1
SV1
HT/EV
SV2
QF
EN-SAVE
RMS
FS
OVP
OVHT
9 10 11 1287654
AC380V 3+N 50/60Hz
AC460V 3+N 60Hz
32
Power
MP
RUN
AL
1
Inside of Unit
1
Customer’s power line, recommended that each unit equipped with speatate circuit breaker;
2
Passive dry contact output for signal RUN, specication 220/230VAC/2A, terminals 40 and 41. Connected when running
and disconnected when shutdown;
3
Passive dry contact output for single AL fault, specication 220/230VAC/2A, terminals 42 and 43 connected when unit fails
and disconnected when no fault;
4
Active output, specication 220/230VAC/2A, MP start and stop control signal of external water pump. AC220V voltage
between terminals 50 and 51 when output, connected to the external pump contactor coil when used, and cannot be
connected to the power supply;
5
Active output, specication 220/230VAC/2A, SV1 is for external oor heating three-way valve control signal. When output
there’s AC220V voltage between terminals 52 and 53. External connected with intermediate relay coil when used, control
output through intermediate relay contacts;
6
Active output, specication 220/230VAC/2A, HT/EV is for control single of external water circuit electric heating. There
is AC220V voltage between terminals 58 and 59 when output. Terminals 58 and 59 are connected to external electric
heating circuit contactor coils when used;
7
Active output, specication 220/230VAC/2A, SV2 is control signal for external waterway solenoid valve / electric valve.
There is AC220V voltage between terminals 60 and 61 when output. Connected with external intermediate relay coil when
used, and control through intermediate relay contacts;
8
External passive switch input, EN-SAVE is for remote switch/terminal interlock, closed when start-up, and open when stop.
In series used with centralized controller. Factory short connection;
9
External passive switch input, RMS remote mode switch, cooling mode when disconnected and heating mode when
connected. Need to set remote mode enabled on the centralized controller before control activated;
10
External passive switch input, FS is signal for water di󰀨erential switch or water ow switch. Access between terminals
14 and 15, normally when connected and fault when disconnected. External water di󰀨erential pressure switch should be
connected here;
11
External passive switch input, OVP is signal for water pump overload access between terminals 16 and 17. Normally
when connected and fault when disconnected. Factory short circuit;