Carrier 07KA - Manual

Carrier
Start-Up and
Service instructions
07KA
Water-Cooled Condensing Units
Table 1 - Physical Data
CONDENSING UNIT 07KA 002 004
REFRIG CHG* R-22 (lb) 2 5 3.0
COMPRESSOR
Single-phase
3-phase
Oi 1 Charge! (pt)
06AD126
2
06AD228
06AC228
5
CONDENSER T ube-in-T ube
HIGH PRESSURESTAT
Cutout
Cut-in
Fixed Differential
428 ± 5 psig
320 ± 20 psig
108 psig
LOW PRESSURESTAT
Cutout
Cut-in
Fixed Differential
30 ± 4 psig
60 ± 15 psig
30 psig
Fig. 1 - 07KA Water-Cooled Condensing Unit
*Factory charge. Refer to Refrigerant Charging, page 3,
for charging details.
tUse Carrier PP-33-2, Texaco Capella B1 or Suniso 3G
Dual Inhibited oil.
NOTE: High and low pressurestats cut-in and cutout
points are not adjustable.
Table 2 - Electrical Data (60-Cycle)
COND
UNIT
07KA
VOLTS
PHASE
NDSV LRA FLA
MAX
KW
WSA
BRANCH CIRCUIT
Wire
Size
(AWG No)
Max
Ft
Wire
Wire
Size
(AWG No)
Max
Ft
Wire
Fuse
Amp*
002310
230
1
230 49 0 12 0 2 75 15 2 12 46 10 74 20
004310
230
1
230 78 0 17 1 5 0 21 6 10 52 8 82 30
004510
230
3
220-
240
53 5 10 3 5 0 13 1 12 65 10 103 20
NDSV - Nominal Distribution System Voltage (Application Range) Motors and controls will operate satisfactorily 10% above
and 10% below Nominal Distribution System Voltage.
LRA - Locked Rotor Amps FLA - Full Load Amps WSA - Wire Sizing Amps
*Maximum dual element fuse size
NOTES:
1 Control circuit voltage is 24 volts on all units
2 Branch circuit wire sizes and corresponding maximum wire lengths tabulated will result in a 1% voltage drop at nameplate
full load amperage
START-UP INSTRUCTIONS
Crankcase heater on 07KA004 should be en­
ergized a minimum of 4 hours before starting
unit. 07KA single-phase units are of split capac­
itor (PSC) type and require an equalized system
pressure to start.
Start Procedure
1. Back-seat (open) liquid and suction line serv­
ice valves. (When accessory water regulating
valve
is used, "crack" liquid line service
valve one-half turn from backseat position.)
2. Open water supply valve and allow water to
reach condenser. (Water regulating valve re­
stricts
water until unit is operating.) Open
condenser water discharge valve (when used).
3. Close disconnects energizing entire system.
4. Set room thermostat to desired temperature.
5.
Set room thermostat to "Cool" and fan switch
as desired.
Motors and controls will operate satisfactorily
10% above and 10% below nominal distribution
system voltage (see Table 2).
Carrier Corporation 1967 Printed in U.S.A. 5-67 07KA-1SS