Carrier 50WQ - Manual (Page 3)

Table 2 — Electrical Data (60-Hz)
MODEL
50WQ
■ "014*“
018
022
027
033
""042
" 033"-
042
033
042
V/PH
208-230/1
" -23Ö/T-
208-230/3
460/3
OPER
VOLTAGE*
Max
253
253
253
506
Min
197
187
414
COMPRESSOR ’ FAN BRANCH CIRCUIT
.. 1
■ **?
Power
Max Ft
Wire
Gnd Max
LRA RLA FLA Wire Size Wire Sizef Fuse
(AWG) (AWG) Amps
37 5 r -9
6" '
07
” Ï4 41 14 20
54 0 134 0.9 14 33 14 30
65 0 133 1 5 14 31 14 30
75.0 16 2 1 7 14 38 12 35
88 0 23 3 2 5 12 43 10 50
100 0 27 7 32 To 56
u. ...
6Ö
75 0 13 8' '
'2
5 ■ "'""14............. 152 12 " ■ 30
80 0 18 5 3 2 12 54 10 40
30 0 60 1 1 14 135 14 15
36 5
_____
69 1 6 14 118 14 15
Min
Circuit
Amps
”'1"2 7 "■
17.7
18 1
22 0
31 6
-"sT?"'
Ï9 8 ^
26 3
.
^ -
1 0 2
FLA — Full Load Amps
LRA — Locked Rotor Amps
RLA — Rated Load Amps
*Permissible limits of the voltage range at which the units will
operate satisfactorily
fRequired when using nonmetallic conduit
Table 3 — Accessories
PART NO.
F h 0T a "D042'
HH93ÄZÖ44^
38CQ900141
DESCRIPTION UNIT
Honeywell thermostat | Ail
Thermostat Subbase ~j All
Solid-State Time Guard® Device
(Six 38CQ900152)
All
d. Ducts passing thru an unconditioned space must
be insulated and covered with vapor barrier in
accordance with the latest issue of SMACNA
(Sheet Metal and Air Conditioning Contractor’s
National Association) and NESCA (National
Environmental Systems Contractor’s Associa­
tion) minimum installation standards for resi­
dential heating and air conditioning systems.
Step 3 — Make Piping Connections
CONNECT WATER SUPPLY AND RETURN
LINES to water inlet and outlet pipe connections
shown in Fig. I and 2. Place plug in unused connec­
tions. Use flexible hose for water line to reduce
possible vibration and improve unit serviceability.
Make sure hoses or pipes are suitable for system
water pressure and sized for proper flow rate.
CAUTION: Im proper heat exchanger water
flow due to pjpiiîg, valving or improper pump
operation is hazardous to units.
For water flow and temperature data refer to
Start-Up section, page 4.
CAUTION: Galvanized pipe or fittings are not
recomtnended for use with these units due to
possible electrolysis.
INSTALL BALANCING VALVES (with shutoff)
in water supply and return lines for water flow
adjustment and a means of water shutoff, if neces­
sary, when servicing unit. When multiple units are
conneeted to a eooling tower, valves permit removal
of one unit without interrupting water flow to other
units.
NOTES
1
2
Fan motors are 208-v, 230-v or 460-v single phase
All units equipped with 24-v transformer for external control
circuit
Copper wire sizes based on 60 C Use copper or copper-clad
aluminum wire only.
INSTALL WATER REGULATING VALVES (if
used) in water supply line near unit. Multiple unit
installations using cooling tower water do not
normally use a water regulating valve.
MAKE CONDENSATE DRAIN LINE CON­
NECTION to female pipe connection provided on
unit. Fig. 2. Install a trap in condensate line as close
as possible to unit. Trap must be at least 3 in. deep
and not higher than the bottom of unit condensate
drain opening. Pitch condensate line to open drain
or sump. Insulate a condensate drain line located
above a living area.
Step 4 — Make Electrical Connections — Field
wiring must comply with local and national fire,
safety and electrical codes. Voltage to unit must be
within the operating voltage range indicated on
nameplate or in Table 2. On 3-phase units, phases
must be balanced within 2%.
O peration of unit on im proper line voltage or
w ith excessive phase im balance constitutes abuse
and is not covered by Carrier W arranty.
INSTALL A BRANCH CIRCUIT DISCONNECT
PER NEC of adequate size to handle unit starting
current. Locate disconnect within sight of and
readily accessible from the unit, per Section 440-14
of National Electrical Code (NEC).
BRING POWER LEADS INTO UNIT — Extend
leads from diseonnect per NEC thru hole provided
(Fig. 1) into line wiring splice box. Fig. 3.
CONNECT GROUND LEAD TO GROUND
LUG IN SPLICE BOX for safety. Connect power
wiring. See Fig. 3. Splice line power leads to yellow
and black pigtails on single-phase units or yellow
pigtails on 3-phase units. Use wire nuts. Tape each
connection.
Unit transformer on 208-230-volt units is factory
wired for 230/24-volt operation. For 208/24-volt
operation, remove black (230-v) transformer lead
from unit contactor and connect red (208-v) lead to
contactor. Cap unused transformer lead.