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58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions
GAS
SUPPLY
MANUAL
SHUTOFF
VALVE
(REQUIRED)
SEDIMENT
TRAP
UNION
Fig. 24 – Typical Gas Pipe Arrangement
Piping should be pressure and leak tested in accordance with the current
addition of the NFPA 54/ANSI Z223 in the United States, local, and
national plumbing and gas codes before the furnace has been connected.
After all connections have been made, purge lines and check for leakage
at furnace prior to operating furnace.
If pressure exceeds 0.5 psig (14-in. w.c.), gas supply pipe must be
disconnected from furnace and capped before and during supply pipe
pressure test. If test pressure is equal to or less than 0.5 psig (14-in. w.c.),
turn off electric shutoff switch located on furnace gas control valve and
accessible manual equipment shutoff valve before and during supply
pipe pressure test. After all connections have been made, purge lines and
check for leakage at furnace prior to operating furnace.
The gas supply pressure shall be within the maximum and minimum
inlet supply pressures marked on the rating plate with the furnace
burners ON and OFF.
ELECTRICAL CONNECTIONS
See
Fig. 25
for field wiring diagram showing typical field 115-V wiring.
Check all factory and field electrical connections for tightness.
Field-supplied wiring shall conform with the limitations of 63°F (33°C)
rise.
WARNING
!
ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings could result in dangerous operation,
serious injury, death or property damage.
Improper servicing could result in dangerous operation, serious injury,
death or property damage.
-
Before servicing, disconnect all electrical power to furnace.
-
When servicing controls, label all wires prior to disconnection.
Reconnect wires correctly.
-
Verify proper operation after servicing.
-
Always reinstall access doors after completing service and
maintenance.
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Blower access panel door switch opens 115-V power to control. No
component operation can occur. Do not bypass or close switch with
panel removed.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
ELECTRICAL SHOCK AND FIRE HAZARD
Failure to follow this warning could result in personal injury, death, or
property damage.
The cabinet MUST have an uninterrupted or unbroken ground
according to NEC NFPA 70 or local codes to minimize personal injury
if an electrical fault should occur. This may consist of electrical wire,
conduit approved for electrical ground or a listed, grounded power cord
(where permitted by local code) when installed in accordance with
existing electrical codes. Refer to the power cord manufacturer's
ratings for proper wire gauge. Do not use gas piping as an electrical
ground.
A02035
FURNACE MAY NOT OPERATE HAZARD
Failure to follow this caution may result in intermittent furnace
operation.
Furnace control must be grounded for proper operation or else control
will lock out. Control must remain grounded through green/yellow wire
routed to gas valve and manifold bracket screw.
115-V Wiring
Verify that the voltage, frequency, and phase correspond to that specified
on unit rating plate. Also, check to be sure that service provided by
utility is sufficient to handle load imposed by this equipment. Refer to
rating plate or
Table 9
U.S. Installations: Make all electrical connections in accordance with
National Electrical Code (NEC) NFPA 70 and any local codes or
ordinances that might apply.
Use a separate, fused branch electrical circuit with a properly sized fuse
or circuit breaker for this furnace. See
specifications. A readily accessible means of electrical disconnect must
be located within sight of the furnace.
NOTE: Proper polarity must be maintained for 115-V wiring. If polarity
is incorrect, control LED status indicator light flash rapidly and status
code (10.1) is displayed. The furnace will NOT operate.
FIVE
WIRE
THREE-WIRE
HEATING-
ONLY
BLK
BLK
WHT
WHT
GND
115-VOLT FIELD-
JUNCTION
SUPPLIED
BOX
FUSED
CONTROL
DISCONNECT
BOX
FURNACE
Fig. 25 – Field Wiring Diagram
17
WARNING
!
CAUTION
!
for equipment electrical specifications.
Table 9
for wire size and fuse
FIELD 24-VOLT WIRING
FIELD 115-, 208/230-, 460-VOLT WIRING
FACTORY 24-VOLT WIRING
FACTORY 115-VOLT WIRING
NOTE 2
1-STAGE
THERMOSTAT
W
C
Y
R
G
TERMINALS
W2
COM
W/W1
NOTE 1
Y/Y2
R
CONDENSING
G
UNIT
24-VOLT
TERMINAL
NOTES: 1.
Connect Y/Y2-terminal as shown for proper operation.
BLOCK
2.
Some thermostats require a "C" terminal connection as shown.
3.
If any of the original wire, as supplied, must be replaced, use
same type or equivalent wire.
FIELD-SUPPLIED
FUSED DISCONNECT
208/230- OR
460-VOLT
THREE
PHASE
208/230-
VOLT
SINGLE
PHASE
GND
A95236
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