18
NOTE: All units must have an external trap for condensate drain-
age. Install a trap at least 4-in. (102 mm) deep and protect against
freeze-up. If drain line is installed downstream from the external
trap, pitch the line away from the unit at 1-in. per 10 ft (25 mm in
3 m) of run. Do not use a pipe size smaller than the unit connec-
tion (
3
/
4
-in.).
Step 11 — Make Electrical Connections
FIELD POWER SUPPLY
If equipped with optional Powered Convenience Outlet
The power source leads to the convenience outlet’s transformer
primary 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.
All units except 208/230-v units are factory wired for the volt-
age shown on the nameplate. If the 208/230-v unit is to be con-
nected to a 208-v power supply, the control transformer must
be rewired by moving the black wire with the
1
/
4
-in. female
spade connector from the 230-v connection and moving it to
the 200-v
1
/
4
-in. male terminal on the primary side of the trans-
former. Refer to unit label diagram for additional information.
Field power wires will be connected line-side pressure lugs on
the power terminal block or at factory-installed option non-
fused disconnect.
Field power wires are connected to the unit at line-side pres-
sure lugs on compressor contactor C and indoor fan contactor
IFC or terminal board (see wiring diagram label for control box
component arrangement) or at factory-installed option non-
fused disconnect switch. Max wire size is #2 AWG (copper on-
ly). See Fig. 24.
NOTE: TEST LEADS - Unit may be equipped with short leads
(pigtails) on the field line connection points on contactor C or op-
tional disconnect switch. These leads are for factory run-test pur-
poses only; remove and discard before connecting field power
wires to unit connection points. Make field power connections di-
rectly to line connection pressure lugs only.
Fig. 23 — Disconnect Switch and Unit
Fig. 24 — Power Wiring Connections
See Fig. 25-28 for wiring diagrams.
WARNING
Failure to follow this warning could result in personal inju-
ry or death.
Do not use gas piping as an electrical ground. Unit cabinet
must have an uninterrupted, unbroken electrical 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 Electrical Code); ANSI/
NFPA 70, latest edition (in Canada, Canadian Electrical
Code CSA [Canadian Standards Association] C22.1), and
local electrical codes.
WARNING
FIRE HAZARD
Failure to follow this warning could result in intermittent oper-
ation or performance satisfaction.
Do not connect aluminum wire between disconnect switch and
unit. Use only copper wire.
COPPER
WIRE ONLY
ELECTRIC
DI
S
CONNECT
S
WITCH
ALUMINUM
WIRE
Unit
s
Witho
u
t Di
s
connect Option
Unit
s
With Di
s
connect Option
2
4
6
1
3
5
L1
L2
L
3
Option
a
l
Di
s
connect
S
witch
Di
s
connect f
a
ctory te
s
t le
a
d
s
; di
s
c
a
rd.
F
a
ctory
Wiring
11
1
3
1
3
L1
L2
L
3
TB
C
IFC
(
3
Ph
as
e
Indoor Motor)
(1 Ph
as
e Indoor Motor
a
nd 1 Ph
as
e Unit)
20
8
/2
3
0-1-60
20
8
/2
3
0-
3
-60
460-
3
-60
575-
3
-60
Di
s
connect
per
NEC
Summary of Contents for WeatherMaker 50TCQ*08
Page 4: ...4 Fig 2 Unit Dimensional Drawing 08 and 09 Size Units ...
Page 5: ...5 Fig 2 Unit Dimensional Drawing 08 and 09 Size Units cont ...
Page 6: ...6 Fig 3 Unit Dimensional Drawing 12 Size Unit ...
Page 7: ...7 Fig 3 Unit Dimensional Drawing 12 Size Unit cont ...
Page 19: ...19 Fig 25 Typical 50TCQ Control Wiring Diagram Sizes 08 09 ...
Page 20: ...20 Fig 26 Typical 50TCQ Control Wiring Diagram Size 12 ...
Page 21: ...21 Fig 27 50TCQ 08 09 Power Wiring Diagram ...
Page 22: ...22 Fig 28 Typical 50TCQ 12 Power Wiring Diagram 208 230 v 3 Phase 60Hz Unit Shown ...
Page 45: ......
