GAS A
SUPPLY
MANUAL J II
V A" J
A93324
Fig, 28--Typical Gas Pipe Arrangement
installed immediately upstream of gas supply connection to
ftm_ace and downstleam of manual shutoff valve.
NOTE: The gas valve inlet pressure tap connection is suitable to
use as test gauge connection providing test pressure DOES NOT
exceed maxin_um 0.5 psig (14-in. wc) stated on gas valve. (See
Fig. 460
Piping should be pressure and leak tested in accordance with
NFGC in the United States or NSCNGPI( in Canada, local, and
national plumbing and gas codes bei:ore the t_urnace 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 (14oin. wc), gas supply pipe nmst be
disconnected fiom _i_rnace and capped be_bre pressure test. If test
pressure is equal to or less than 0.5 psig (14=in. wc), turn off
electric shutoff switch located on furnace gas valve and accessible
manual shutoff valve before test.
The gas supply pressure shall be within the n_axinmm and
minimum inlet supply pressures marked on the rating plate with
the f£maace burners ON and OFF.
Step 8--Electrical Connections
See Fig 30 £;orfield wiring diagram showing typical field 115=v
and 24-v wiring Check all _hctory and field electrical connections
for tighmess
Field=supplied wiring shall conform with the limitations of 63_T
(35°C) rise
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in serious injury or
death.
Blower access panel door switch opens l l5-v power to
control center. No component operation can occur Do not
bypass or close switch with panel removed.
F[ RNACE MAY NOT OPERATE
Failure to _bllow this caution may result in furnace operation
stopping and water pipes fi'eezing during cold weather
Furnace control must be grounded _br proper operation or
contlol will lock out (ontrol is grounded through
green yellow wire routed to gas valve and burner box screw
115°V WIRING
Befbre proceeding with electrical connections, make certain that
voltage, fi'equency, and phase correspond to that specified on unit
rating plate Also, check to be sure that service provided by power
supply is sufficient to handle toad imposed by this equipment.
Refkr to rating plate or Table 6 for equipment electrical specifi-
cations
Make all electrical connections in accordance with National
Electrical Code (NEC) ANSI NFPA 70°2002 and any local codes
or ordinances that might apply For (anadian installations, all
electrical connections must be made in accordance with Canadian
Electrical (7ode CSA C22.1 or authorities having jurisdiction.
Use a separate, filsed branch electrical circuit containing a properly
sized Nse or circuit breaker [br this furnace. See Table 6 for wire
size and fuse specifications. A disconnecting means must be
located within sight fiom and readily accessible to Nmace.
UNIT
SIZE
040-08
040-12
060-08
06042
08048
08042
08048
080-20
10048
tOO-20
120-20
VOLTS--
HERTZ--
PHASE
115--60--1
115--60--1
115--60--1
115--60--1
115--60--1
115--60--1
115--60--1
115--60--1
115--60--1
115--60--1
115--60--1
OPERATING
VOLTAGE RANGE[
Max* Min*
127 104
127 104
127 104
127 104
127 104
127 104
127 104
127 104
127 104
127 104
127 104
Table 6--ElectricN Data
MAX
UNIT
AMPS
6.1
7.3
6.1
7.1
9.5
7.6
10.0
14.1
10.2
14.8
14.6
MBN
UNiT MAX WRRE
WIRE
AMPACBTY? SRZE LENGTH {FT)_
8.4 14 44
10.0 14 37
8.4 14 44
9.8 14 38
12.8 14 29
10.4 14 36
13.4 14 28
18.4 12 31
13.5 14 27
19.3 12 30
19.1 12 30
MAX FUSE OR
CKT BKR AMPS**
15
15
15
15
15
15
15
2O
15
20
2O
* Permissible limits of voltage range at which unit will operate satisfactorily.
t Unit ampacity = 125 percent of largest operating component's fu{I load amps plus 100 percent of all other potential operating components' (EAC, humidifier, etc.) full
load amps
$ Length shown is as measured 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.
** Time-delay type is recommended.
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