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15
Fig. 18 — Condensate Drain Pan (Side View)
Fig. 19 — Condensate Drain Pan Piping Details
All units must have an external trap for condensate drainage.
Install a trap at least 4 in. (102 mm) deep and protect against
freeze-up. If drain line is installed downstream from the exter-
nal trap, pitch the line away from the unit at 1 in. per 10 ft (25
mm per 3 m) of run. Do not use a pipe size smaller than the
unit connection (
3
/
4
in.).
Step 11 — Make Electrical Connections
NOTE: Field-supplied wiring shall conform with the limitations
of minimum 63°F (33°C) rise.
FIELD POWER SUPPLY
If equipped with optional Powered Convenience Outlet, the
power source leads to the convenience outlet’s transformer pri-
mary are not factory connected. Installer must connect these
leads according to required operation of the convenience out-
let. If an always-energized convenience outlet operation is de-
sired, connect the source leads to the line side of the unit-
mounted disconnect. (Check with local codes to ensure this
method is acceptable in your area.) If a de-energize via unit
disconnect switch operation of the convenience outlet is de-
sired, connect the source leads to the load side of the unit dis-
connect. On a unit without a unit-mounted disconnect, connect
the source leads to compressor contactor C and indoor fan con-
tactor IFC pressure lugs with unit field power leads. See Con-
venience Outlets on page 16 for power transformer connec-
tions.
The field power wires are connected to the unit at line-side
pressure lugs on compressor contactor C and indoor fan con-
tactor IFC (see wiring diagram label for control box compo-
nent arrangement) or at factory-installed option non-fused dis-
connect switch. Maximum wire size is #2ga AWG (copper on-
ly). See Fig. 21 and unit label diagram for field power wiring
connections.
NOTE: Unit may be equipped with short test leads (pigtails) on
the field line connection points on contactor C or optional discon-
nect switch. These leads are for factory-run test purposes only; re-
move and discard before connecting field power wires to unit con-
nection points. Make field power connections directly to line con-
nection pressure lugs only.
Connect field power supply conductors to LINE side terminals
when the switch enclosure cover is removed to attach the handle.
Fig. 20 — Disconnect Switch and Unit
UNITS WITHOUT FACTORY-INSTALLED
DISCONNECT
When installing units, provide a disconnect switch per NEC
(National Electrical Code) of adequate size. Disconnect sizing
data is provided on the unit informative plate. Locate on unit
cabinet or within sight of the unit per national or local codes.
Do not cover unit informative plate if mounting the disconnect
on the unit cabinet.
UNITS WITH FACTORY-INSTALLED DISCONNECT
The factory-installed optional disconnect switch is located in a
weatherproof enclosure located under the main control box.
The manual switch handle is accessible through an opening in
the access panel. Discard the factory test leads (see Fig. 21).
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
Unit cabinet must have an uninterrupted, unbroken electri-
cal ground to minimize the possibility of personal injury if
an electrical fault should occur. This ground may consist
of electrical wire connected to unit ground lug in control
compartment, or conduit approved for electrical ground
when installed in accordance with NEC (National Electri-
cal Code); ANSI/NFPA 70, latest edition (in Canada, Ca-
nadian Electrical Code CSA [Canadian Standards Associ-
ation] C22.1), and local electrical codes.
DRAIN
(FACTORY-INSTALLED)
PLUG
CONDENSATE PAN (SIDE VIEW)
STANDARD
SIDE DRAIN
ALTERNATE
BOTTOM DRAIN
NOTE: Tr
a
p
s
ho
u
ld
b
e deep eno
u
gh to off
s
et m
a
xim
u
m
u
nit
s
t
a
tic
difference. A 4-in. (102 mm) tr
a
p i
s
recommended.
MINIMUM PITCH
1˝ (25 mm) PER
1
0´
(
3
m) OF LINE
BA
S
E RAIL
OPEN
VENT
TO ROOF
DRAIN
DRAIN PLUG
ROOF
CURB
S
EE NOTE
3
˝ (76 mm)
MIN
WARNING
FIRE HAZARD
Failure to follow this caution could result in fire, intermit-
tent operation, or unsatisfactory performance.
Do not connect aluminum wire between disconnect
switch and air conditioning unit. Use only copper wire.
COPPER
WIRE ONLY
ELECTRIC
DI
S
CONNECT
S
WITCH
ALUMINUM
WIRE
Summary of Contents for 50HCQ07
Page 4: ...4 Fig 2 Unit Dimensional Drawing 07 08 Size Units ...
Page 5: ...5 Fig 2 Unit Dimensional Drawing 07 08 Size Units cont ...
Page 6: ...6 Fig 3 Unit Dimensional Drawing 09 Size Units ...
Page 7: ...7 Fig 3 Unit Dimensional Drawing 09 Size Units cont ...
Page 24: ...24 Fig 37 Electro Mechanical Control Wiring 50HCQ A07 D07 208 230v 460v 575v ...
Page 25: ...25 Fig 38 Electro Mechanical Control Wiring 50HCQ D07 Tier 2 1 Compressor 208 230v 460v 575v ...
Page 26: ...26 Fig 39 Electro Mechanical Control Wiring 50HCQ 08 09 208 230v 460v 575v ...
Page 27: ...27 Fig 40 Electro Mechanical Power Wiring 50HCQ A07 D07 208 230v 460v 575v ...
Page 28: ...28 Fig 41 Electro Mechanical Power Wiring 50HCQ D07 Tier 2 1 Compressor 208 230v 460v 575v ...
Page 29: ...29 Fig 42 Electro Mechanical Power Wiring 50HCQ 08 09 208 230v 460v 575v ...
Page 30: ...30 Fig 43 PremierLink Wiring Schematic 50HCQ07 09 208 230v 460v 575v ...
Page 31: ...31 Fig 44 RTU Open System Control Wiring ...
Page 49: ......