Carrier 30HS - Manual

Number One
AirConditbning
Maker
m
e
n of Carrier Corporation
Syracuse New York
Wiring Diagrams
30HR,HS
070 iJ»ru tm
Reciprocating Liquid Chillers
60-Hertz
These diagrams apply to 30HR,HS070—120 Model A units starting
with Serial No. FI 55985 and ending with Serial No. G448588.
INDEX
UNIT
30HR,HS
070
thru
120
070,
080,
090
100 ,
no,
120
FIGURE
NUMBER
DESCRIPTION
Wi ri rig For
Part-Winding Start
Suggested Field
Wiring Interlocks
’ ~T_ocdtTons o?
Control Components
Power Schernatic
Control CTrcu i t
{Simplified Schematic)
CornfroTTr i rcuit
(Simplified Schematic)
Power Schematic
'Locations of
Control Components
VOLTS
All
All
208 , 230 ,
460,575
208 , 230 ,
460,575
UNIT LABEL DIAGRAM
30HR
All
080-1214
080-1224
100-1584
100-1594
Re
Same As
Below
GENERAL NOTES
1. Factory wiring is in accordance with the
National Electrical Code. Any field modifica­
tions or additions must be in compliance with
all applicable codes. Field-installed power wires
must be rated 75 C minimum.
2. Control circuit is 115-1-60, with 10-amp circuit
breaker.
3. Oil pressure safety switches are standard on
30HS units only. Jumpers between terminals] 1 |
and
and between and are supplied on
30HR units.
4. Manual transfer switch provides the following
starting sequences:
Three-compressor units — position 1 (terminal
A), 3-2-1; position 2 (terminal B), 1-2-3.
Four-compressor units ~ position 1 (terminal
A), 1-4-3-2; position 2 (terminal B), 3-2-1-4.
Stop unit before changing transfer switch
position.
5. All field-supplied auxiliary contacts must have a
minimum rating of 1250-va inrush and 430-va
sealed plus capacity required for field-installed
equipment between terminals 111 [ and
andpT],] 5 [and and
12 10
6. With accessory .75-kva control transformer,
additional controls up to 3800-va inrush and
175-va sealed may be used.
7.
8
.
9.
When using a transformer, ground control
circuit by connecting green wire from trans­
former terminal X2 to ground screw (detailed
instructions with transformer package).
When using field-supplied 115-volt control
(L2) must be connected to 24 power, terminal
neutral or ground potential.
Across-the-line starting is standard on all units.
If it is necessary to modify to part-winding
start, refer to “Modification For Part-Winding
Start.”
© Carrier Corporation 1971 475 Form 30HR,HS-7W