Trane CVHH, Installation, Operation And Maintenance Manual

Page: 63 / 111

CVHH-SVX001A-EN 63
System Control Circuit Wiring (Field Wiring)
Table 18. Unit control panel w iring 120 Vac
St a n d a 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 in g
( 1 2 0 V a c)
Un it Con t r ol Te r m in a t ion s I n pu t or Ou t p u t Ty pe Con t a ct s
Chilled Wat er Flow Pr oving I nput
( a)
1X1- 5 t o 1K16-J3- 2 Binar y I nput Nor m ally Open, closur e
w it h flow
Condenser Wat er Flow Pr ov ing I nput
( b)
1X1- 6 t o 1K16-J2- 2 Binar y I nput Nor m ally Open, closur e
w it h flow
Chilled Wat er Pum p Relay Out put 1K15-J2- 4 t o 6 Binar y Out put Nor m ally Open
Condenser Wat er Pum p Relay Out put 1K15-J2- 1 t o 3 Binar y Out put Nor m ally Open
Opt ion a l Con t r ol Cir cu it s
( 1 2 0 V a c) Note: Default s ar e fact or y pr ogram m ed, alt er nat es can be select ed at st art - up using t he service t ool.
Alar m Relay MAR ( Non- Lat ching) Out put 1K19-J2- 1 t o 3 Binar y Out put Nor m ally Open
Lim it War ning Relay Out put 1K19-J2- 4 t o 6 Binar y Out put Nor m ally Open
Alar m Relay MMR ( Lat ching) Out put 1K19-J2- 7 t o 9 Binar y Out put Nor m ally Open
Com pr essor Running Relay Out put 1K19-J2- 10 t o 12 Binar y Out put Nor m ally Open
Max im um Capacit y Relay Out put 1K20-J2- 1 t o 3 Binar y Out put Nor m ally Open
Head Relief Request Relay Out put 1K20-J2- 4 t o 6 Binar y Out put Nor m ally Open
Pur ge Alarm Relay Out put 1K20-J2- 7 t o 9 Binar y Out put Nor m ally Open
I ce Mak ing Relay Out put 1K15-J2- 10 t o 12 Binar y Out put Nor m ally Open
Fr ee Cooling Relay Out put 1K21-J2- 4 t o 6 Binar y Out put Nor m ally Open
St a n d a r d Low V olt a ge Cir cu it s
( le ss t h a n 3 0 V a c)
( c)
Un it Con t r ol Pa n e l
Te r m in a t ion s I n pu t or Ou t pu t Ty pe Con t a ct s
Ex t er nal Aut o St op I nput 1K2-J2- 1 t o 2 Binar y I nput Closur e r equired for
nor m al operat ion
Em er gency St op I nput 1K2-J2- 3 t o 4 Binar y I nput Closur e r equired for
nor m al operat ion
Opt ion a l Low V olt a ge Cir cu it s
Ex t er nal Base Loading Enable I nput 1K8-J2- 1 t o 2 Binar y I nput Nor m ally Open
Ex t er nal Hot Wat er Cont r ol Enable I nput 1K8-J2- 3 t o 4 Binar y I nput Nor m ally Open
Ex t er nal I ce Machine Cont r ol Enable I nput 1K9-J2- 1 t o 2 Binar y I nput Nor m ally Open
Ex t er nal Free Cooling I nput Enable I nput 1K10-J2- 1 t o 2 Binar y I nput Nor m ally Open
% RLA Com pr essor Out put 1K5-J2- 1 t o 3 Analog Out put 2–10 Vdc
Ex t er nal Condenser Pr essure Out put 1K5-J2- 4 t o 6 Analog Out put 2–10 Vdc
Evaporat or / Condenser Differ ent ial Pr essur e
Out put 1K5-J2- 4 t o 6 Analog Out put 2–10 Vdc
Condenser Head Pr essure Cont rol 1K5-J2- 4 t o 6 Analog Out put 2–10 Vdc
Ex t er nal Cur rent Lim it Set point I nput 1K6-J2- 2 t o 3 Analog I nput 2–10 Vdc, or 4–20 m A
Ex t er nal Chilled Wat er Set point I nput 1K6-J2- 5 t o 6 Analog I nput 2–10 Vdc, or 4–20 m A
Ex t er nal Base Loading Set point I nput 1K7-J2- 2 t o 3 Analog I nput 2–10 Vdc, or 4–20 m A
Gener ic Refr igerant Monit or input 1K7-J2- 5 t o 6 Analog I nput 2–10 Vdc, or 4–20 m A
Out door Air Tem perat ur e sensor I PC bus Connect ion and sensor Com m unicat ion and sensor
Tracer Com m 4 I nt er face 1K3-J2- 1( + ) t o 2( - )
1K3-J2- 3( + ) t o 4( - ) Com m unicat ion t o Tracer ( as or dered, see sales
or der )
BACnet or MODBUS 1K1, 5( + ) t o 6( - ) Com m unicat ion t o BACnet or
MODBUS ( as or dered, see sales
or der )
LonTalk Com m 5 int er face
1K4-J2- 1( + ) t o 2( - )
1K4-J2- 3( + ) t o 4( - )
Left Panel
Com m unicat ion t o LonTalk
( as or dered, see sales
or der )
Note: All w ir ing t o be in accor dance w it h Nat ional Elect r ical Codes and any local codes
( a) I f t he Chilled Wat er Flow Pr ov ing I nput is a fact or y - inst alled ifm efect or flow - sensing device, t he secondary field device ( r ecom m ended w it h 3.3°C [ 38°F]
and low er leav ing chilled w at er t em per at ur es) for pr oof of flow connect s fr om 1X1- 5 t o 1K26- 4 ( binar y input ; nor m ally open, closur e w it h flow ) . Rem ove
fact ory j um per w hen used.
( b) I f t he Condenser Wat er Flow Pr oving I nput is a fact or y- inst alled ifm efect or flow - sensing device, t he secondary ( opt ional) field dev ice for pr oof of flow
connect s fr om 1X1- 6 t o 1K27- 4 ( binar y input ; nor m ally open, closur e w it h flow ) . Rem ove fact or y j um per w hen used.