Carrier 38AH024-034 - Manual (Page 12)

LLSV CONTROL SCHEMATIC 124 VI
AFS — Airflow Switch LLSV
C — Contactor, Compressor LOR
CB — Circuit Breaker LPS
CLO — Compressor Lock-Out OPS
COM — Common PL
COTP — Compressor Overcurrent Protection SOLR
CR — Control Relay STAT
DISC — Disconnect TB
HPS — High-Pressure Switch TGD
IPC — Indoor-Fan Contactor TRAN
IPR — Indoor-Fan Relay U
kcmil — thousand circular mils VA
LLS — Liquid Line Solenoid VAV
LEGEND
Liquid Line Solenoid Valve
Lock-Out Relay
Low-Pressure Switch
Oil Pressure Switch
Plug Assembly
Solenoid Relay
Thermostat
Terminal Block
Time Guard® Device
Transformer
Unloader (Solenoid)
Volt-Ampere
Variable Air Volume
I I Terminal Block Connection
^—> Marked Terminal
O Unmarked Terminal
Unmarked Splice
Field Accessory Wiring
Factory Wiring
Field Control Wiring
Field Power Wiring
Indicates Common Potential;
Does Not Represent Wiring
Factory wiring is in accordance with National Electrical Code (NEC)
(U.S A. Standard) Field modifications or additions must be in com­
pliance with all applicable codes
Wiring for field power supply must be rated 75 C minimum. Use
copper, copper-clad aluminum, or aluminum conductors Maxi­
mum incoming wire size for main terminal block (TB1) is 350 max
kcmil (230 v). All other voltages 2/0 AWG (American Wire Gage)
maximum
Terminal blocks TB2, TB3, and TB4 are for external field control
connections Control connections are to be class 2 wiring.
Field-supplied components connected to TB3 (e.g., LLS1 and
LLS2) cannot exceed 75 va total inductive load at 24 vac, so that
NOTES TO FIG. 9 AND 10
TRAN1 does not become overloaded The air handler auxiliary
motor starter contacts must have a minimum rating of 30 va at
24 vac The airflow switch must have minimum contact rating of
125 va at 24 vac.
5. Replacement of factory wires must be with type 105 C wire or its
equivalent
6. Field-supplied liquid line solenoid valves installed at the evapo­
rator are required on circuits no. 1 and 2 on all units
7. ModuPanel control is wired for one air handler only Re­
move wire between TB2-2 to TB2-7 for ModuPanel control
applications
Fig. 9 — Typical Wiring Schematic — VAV ModuPaner
One Dual-Circuit Condensing Unit with Air Handler
12