59SP6A: Installation, Start-up, Operating, Service and Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
29
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.
Gas entry can be from left or right side, or top panel. See
and
.
Gas Pipe Grommet
For direct vent (2-pipe) applications, the knockout for the gas pipe must
be sealed to prevent air leakage. Remove the knockout, install the
grommet in the knockout, then insert the gas pipe. The grommet is
included in the loose parts bag. See
.
ELECTRICAL CONNECTIONS
Field-supplied wiring shall conform with the limitations of 63
_
F (33
_
C)
rise.
A200307
Fig. 33 – Typical Single-Stage Field Wiring Diagram
Table 11 – Electrical Data
CAUTION
!
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.
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 door switch opens 115-v power to control. No component
operation can occur. Do not bypass or close switch with blower door
for field wiring diagram showing typical field 115-v wiring.
Check all factory and field electrical connections for tightness.
FURNACE
SIZE
VOLTS-
HERTZ-
PHASE
OPERATING VOLTAGE
RANGE
*
*. Permissible limits of the voltage range at which the unit operates satisfactorily.
MAXIMUM
UNIT
AMPS
UNIT
AMPACITY
†
†. Unit ampacity = 125 percent of largest operating component’s full load amps plus 100 percent of all other potential operating components’ (EAC, humidifier,
etc.) full load amps.
MINIMUM
WIRE SIZE
AWG
MAXIMUM
WIRE LENGTH
FT (M)
‡
‡. Length shown is as measured one way along wire path between furnace and service panel for maximum 2 percent voltage drop.
MAX FUSE OR
CKT BKR
AMPS
**
**. Time-delay type is recommended.
Maximum
Minimum
040V14--10
115-60-1
127
104
7.0
9.7
14
38
11.6
15
040V17--12
115-60-1
127
104
7.2
10.0
14
37
11.2
15
060V14--12
115-60-1
127
104
7.1
9.8
14
38
11.6
15
060V17--14
115-60-1
127
104
10.4
13.9
14
26
7.9
15
080V17--16
115-60-1
127
104
10
13.4
14
27
8.2
15
080V21--20
115-60-1
127
104
12.8
16.9
12
34
10.4
20
100V21--20
115-60-1
127
104
12.6
16.7
12
34
10.4
20
120V24--22
115-60-1
127
104
12.6
16.7
12
34
10.4
20
W/W1
Y1
COM
Y/Y2
R
G
