REMOVE PRESENT
JUMPER 11-12
[TT]----------------1 I
--------------------------------
----------------------------0^5
-----------
cÿ5-
CHILLED WATER L COND PUMP OR TOWER FA
■-чт
CHILLED WATER
PUMP STARTER
AUX CONTACTS
FC2
COND PUMP OR TOWER FAN MOTOR 0. L. CONTACTS IF AVAILABLE
CHILLED WATER COND. PUMP STARTER AUX. CONTACT OR FLOW SWITCH SHOULD BE
FLOW SWITCH LOCATED HERE ONLY WHEN COND PUMP STARTER IS INDEPENDENT
OF 30HR, HS WIRING.
[ÎÔ]
--
-------------
0~ -
FC|
ГЧ
-----------------
41]
-0
CONTACTOR COILS FOR COND.
FAN MOTORS WITH SEPARATE
AIR COOLED COND. FOR EACH
REFRIGERATION CIRCUIT.
(SEE NOTES 5 AND 6)
Fig. 2 — Suggested Field Wiring of Interlocks
0
----------©-----------
0
CONTACTOR COIL FOR COND. WATER
PUMP OR FOR FAN MOTOR(S) ON
SINGLE TWO CIRCUIT AIR COOLED
COND.
LEGEND (For Fig. 3 thru 8)
BR
— Balancing Relay
S Step Controller Switch
C
— Compr Contactor
SR -
Starting Relay
CA
— Second Contactor
TS -
Transfer Switch (Compr Starting Sequence)
CB
— Control Circuit Breaker
U - Unloader (Compr)
CR
— Control Relay
XL - Across-the-Line
HP
— Fligh Pressurestat
LLS
— Liquid Line Solenoid Valve
О
LP
— Low Pressurestat
Coil
LS
LWTC
— Limit Switch
— Low Water Temp Cutout
Light (Red)
OPSS
— Oil Pressure Safety Switch
О
Terminals on Step Controller
RR
— Recycle Relay
/\ Terminals on Temp Controller
□ Terminaison Terminal Strips
Terminals on Compr
---------
Factory V\/iring
__
___
Factory Wiring on 30FIS Units Only
______
Field Wiring
----------Factory Wired, Field Connected
EXTERNAL CONTROL POWER SOURCE (IF USED)
¥
ITRÔLPOW^
M '
CIRCUIT N0.1
CONTACTORS
Ci
C2
CIRCUIT
BREAKERS
COMPR I COMPR 2
C
c
0
0
M
M
p
p
R
R.
1 2
FIELD
POWER
SUPPLY
CONTACTOR COIL
POWER DISC
PLUG
CIRCUIT NO. 2
TERMS [гЧ
CONTACTORS
CIRCUIT
BREAKER
FIELD
П
INSTALLEOl
¡accessory!
CONTROL
TRANS-
C
0
M
P
R
_a_
li
C3
COMPR 3
L. 2QRMERJ CON T. COIL
TERMS Ж
TERWNJl
STRIP
ТПхГораз. 2
2j(SEE NOTE
..... O.RS.S. I
I I J(SEE NOTE
'■ 3)
cCP
CKT I , CKT.2
♦ 2
COMP SEQUENCE
О m О
START Ш STOP
UNLOAOER CRANKCASE
HEATER
• ON 208-, 230-VOLT UNITS ONLY
COMPR. MOTOR
TERMINAL PLATE
THERMOTECTOR
LEADS TO CONTROL
CIRCUIT
MOTOR THERMOTECTORS INTERNALLY
WIRED IN SERIES TO TERMINALS ABB
THROUGH COMMON TERMINALS*
30HR, HS070, 080, 090
Fig. 3 — Locations of Control Components (All Voltages)
