Install Electrical Connections; High- -Voltage Connections - Carrier INFINITY 48XL-A Installation Instructions Manual

NOMINAL INTERNAL
IRON PIPE DIAMETER
10
SIZE (IN.) (IN.)
(3.0)
1/2 .622 175
3/4 .824 360
1 1.049 680
1--- 1/4
1.380 1400
1--- 1/2
1.610 2100
*Capacity of pipe in cu ft of gas per hr for gas pressure of 0.5 psig or less. Pressure drop of 0.5 ---IN. W.C. (based on a 0.60 specific gravity gas). Refer to Table 2
and NFPA 54/ANSI Z223.1.
{ This length includes an ordinary number of fittings.
OUT
Fig. 10 - - Sediment Trap
WARNING
!
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in fire, explosion,
personal injury, death and/or property damage.
S Connect gas pipe to unit using a backup wrench to avoid
damaging gas controls.
S Never purge a gas line into a combustion chamber. Never
test for gas leaks with an open flame. Use a commercially
available soap solution made specifically for the detection
of leaks to check all connections.
S Use proper length of pipe to avoid stress on gas control
manifold.
S If a flexible connector is required or allowed by authority
having jurisdiction, black iron pipe shall be installed at
furnace gas valve and extend a minimum of 2 in. (51 mm)
outside furnace casing.
S If codes allow a flexible connector, always use a new
connector. Do not use a connector which has previously
serviced another gas appliance.
8. Check for gas leaks
factory- -installed gas lines after all piping connections have
been completed. Use a commercially available soap solution
made specifically for the detection of leaks (or method
specified by local codes and/or regulations).
Table 2 – Maximum Gas Flow Capacity*
20 30 40 50
(6.1) (9.1) (12.1) (15.2)
120 97 82 73
250 200 170 151
465 375 320 285
950 770 600 580
1460 1180 990 900
IN
TEE
NIPPLE
CAP
C99020
at the field- -installed and
LENGTH OF PIPE ft (m)†
60 70 80 90
(18.3) (21.3) (24.4) (27.4)
66 61 57 53
138 125 118 110
260 240 220 205
530 490 460 430
810 750 690 650

Install Electrical Connections

WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
The unit cabinet must have an uninterrupted, unbroken
electrical ground. This ground may consist of an electrical
wire connected to the unit ground screw in the control
compartment, or conduit approved for electrical ground
when installed in accordance with NEC, NFPA 70 National
Fire Protection Association (latest edition) (in Canada,
Canadian Electrical Code CSA C22.1) and local electrical
codes.

HIGH- -VOLTAGE CONNECTIONS

The unit must have a separate electrical service with a
field- -supplied, waterproof disconnect switch mounted at, or within
sight from, the unit. Refer to the unit rating plate, NEC and local
codes for maximum fuse/circuit breaker size and minimum circuit
amps (ampacity) for wire sizing.
The field- -supplied disconnect may be mounted on the unit over
the high- -voltage inlet hole (See Fig. 5 and 6).
NOTE: Field supplied disconnect switch box should be
positioned so that it does not cover up any of the unit gas
combustion supply air louvers.
Operation of unit on improper line voltage constitutes abuse and
may cause unit damage that could affect warranty.
CAUTION
!
UNIT COMPONENT DAMAGE HAZARD
Failure to follow this caution may result in damage to the
unit being installed.
1. Make all electrical connections in accordance with NEC
NFPA 70 (latest edition) and local electrical codes
governing such wiring. In Canada, all electrical
connections must be in accordance with CSA standard
C22.1 Canadian Electrical Code Part 1 and applicable
local codes. Refer to unit wiring diagram.
2. Use only copper conductor for connections between
field- -supplied electrical disconnect switch and unit. DO
NOT USE ALUMINUM WIRE.
3. Be sure that high- -voltage power to unit is within
operating voltage range indicated on unit rating plate.
4. Insulate low- -voltage wires for highest voltage contained
within conduit when low- -voltage control wires are in
same conduit as high- -voltage wires.
5. Do not damage internal components when drilling
through any panel to mount electrical hardware, conduit,
etc.
12
100 125 150 175
(30.5) (38.1) (45.7) (53.3)
50 44 40 —
103 93 84 77
195 175 160 145
400 360 325 300
620 550 500 460
200
(61.0)
—
72
135
280
430