System Control Circuit Wiring (Field Wiring) - Trane CVHH Installation, Operation And Maintenance Manual

System Control Circuit Wiring (Field Wiring)

Table 18. Unit control panel w iring 120 Vac
St a n da r d Con t r ol Cir cu it s: Un it
Con t r ol Pa n e l Con t r ol W ir ing
( 1 2 0 Va c)
Chilled Wat er Flow Proving I nput
Condenser Wat er Flow Proving I nput
Chilled Wat er Pum p Relay Out put
Condenser Wat er Pum p Relay Out put
Opt ion a l Con t r ol Cir cu it s
( 1 2 0 Va c)
Alarm Relay MAR ( Non- Lat ching) Out put
Lim it Warning Relay Out put
Alarm Relay MMR ( Lat ching) Out put
Com pressor Running Relay Out put
Maxim um Capacit y Relay Out put
Head Relief Request Relay Out put
Purge Alarm Relay Out put
I ce Making Relay Out put
Free Cooling Relay Out put
St a n da r d Low V olt a ge Cir cu it s
( c)
( le ss t ha n 3 0 Va c)
Ext ernal Aut o St op I nput
Em ergency St op I nput
Opt ion a l Low Volt a ge Cir cu it s
Ext ernal Base Loading Enable I nput
Ext ernal Hot Wat er Cont rol Enable I nput
Ext ernal I ce Machine Cont rol Enable I nput
Ext ernal Free Cooling I nput Enable I nput
% RLA Com pressor Out put
Ext ernal Condenser Pressure Out put
Evaporat or/ Condenser Different ial Pressure
Out put
Condenser Head Pressure Cont rol
Ext ernal Current Lim it Set point I nput
Ext ernal Chilled Wat er Set point I nput
Ext ernal Base Loading Set point I nput
Generic Refrigerant Monit or input
Out door Air Tem perat ure sensor
Tracer Com m 4 I nt erface
BACnet or MODBUS
LonTalk Com m 5 int erface
Note: All w ir ing t o be in accordance wit h Nat ional Elect rical Codes and any local codes
( a) I f t he Chilled Wat er Flow Proving I nput is a fact ory- inst alled ifm efect or flow- sensing device, t he secondary field device ( recom m ended wit h 3.3°C [ 38°F]
and lower leaving chilled wat er t em perat ures) for proof of flow connect s from 1X1- 5 t o 1K26- 4 ( binary input ; norm ally open, closure wit h flow) . Rem ove
fact ory j um per w hen used.
( b) I f t he Condenser Wat er Flow Proving I nput is a fact ory- inst alled ifm efect or flow- sensing device, t he secondary ( opt ional) field device for proof of flow
connect s from 1X1- 6 t o 1K27- 4 ( binary input ; norm ally open, closure wit h flow) . Rem ove fact ory j um per when used.
CVHH-SVX001A-EN
Un it Con t r ol Te r m in a t ion s
( a)
1X1- 5 t o 1K16-J3- 2
( b)
1X1- 6 t o 1K16-J2- 2
1K15-J2- 4 t o 6
1K15-J2- 1 t o 3
Note: Default s are fact ory program m ed, alt ernat es can be select ed at st art - up using t he service t ool.
1K19-J2- 1 t o 3
1K19-J2- 4 t o 6
1K19-J2- 7 t o 9
1K19-J2- 10 t o 12
1K20-J2- 1 t o 3
1K20-J2- 4 t o 6
1K20-J2- 7 t o 9
1K15-J2- 10 t o 12
1K21-J2- 4 t o 6
Un it Con t r ol Pa n e l
Te r m in a t ion s
1K2-J2- 1 t o 2
1K2-J2- 3 t o 4
1K8-J2- 1 t o 2
1K8-J2- 3 t o 4
1K9-J2- 1 t o 2
1K10-J2- 1 t o 2
1K5-J2- 1 t o 3
1K5-J2- 4 t o 6
1K5-J2- 4 t o 6
1K5-J2- 4 t o 6
1K6-J2- 2 t o 3
1K6-J2- 5 t o 6
1K7-J2- 2 t o 3
1K7-J2- 5 t o 6
I PC bus Connect ion and sensor
1K3-J2- 1( + ) t o 2( - )
1K3-J2- 3( + ) t o 4( - )
1K1, 5( + ) t o 6( - )
1K4-J2- 1( + ) t o 2( - )
1K4-J2- 3( + ) t o 4( - )
Left Panel
I n pu t or Out pu t Ty pe
Binary I nput
Binary I nput
Binary Out put
Binary Out put
Binary Out put
Binary Out put
Binary Out put
Binary Out put
Binary Out put
Binary Out put
Binary Out put
Binary Out put
Binary Out put
I n pu t or Out pu t Type
Binary I nput
Binary I nput
Binary I nput
Binary I nput
Binary I nput
Binary I nput
Analog Out put
Analog Out put
Analog Out put
Analog Out put
Analog I nput
Analog I nput
Analog I nput
Analog I nput
Com m unicat ion and sensor
Com m unicat ion t o Tracer
Com m unicat ion t o BACnet or
MODBUS
Com m unicat ion t o LonTalk
Con t a ct s
Norm ally Open, closure
wit h flow
Norm ally Open, closure
wit h flow
Norm ally Open
Norm ally Open
Norm ally Open
Norm ally Open
Norm ally Open
Norm ally Open
Norm ally Open
Norm ally Open
Norm ally Open
Norm ally Open
Norm ally Open
Con t a ct s
Closure required for
norm al operat ion
Closure required for
norm al operat ion
Norm ally Open
Norm ally Open
Norm ally Open
Norm ally Open
2–10 Vdc
2–10 Vdc
2–10 Vdc
2–10 Vdc
2–10 Vdc, or 4–20 m A
2–10 Vdc, or 4–20 m A
2–10 Vdc, or 4–20 m A
2–10 Vdc, or 4–20 m A
( as ordered, see sales
order)
( as ordered, see sales
order)
( as ordered, see sales
order)
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