Gas Pipe Grommet; Typical Gas Pipe Arrangement; Gas Valve With Tower Pressure Ports; Gas Entry - Carrier 59TP6B Installation, Start-Up, Operating And Service And Maintenance Instructions

CAUTION
!
FURNACE DAMAGE HAZARD
Failure to follow this caution may result in furnace damage.
Connect gas pipe to furnace using a backup wrench to
avoid damaging gas controls and burner misalignment.
An accessible manual equipment shutoff valve MUST be installed
external to furnace casing and within 6 ft. (2 M) of furnace.
Install a sediment trap externally in the riser leading to furnace as
shown in Fig. 31. Connect a capped nipple into lower end of tee.
Capped nipple should extend below level of furnace gas controls.
Place a ground joint union between furnace gas control valve and
exterior manual equipment gas shutoff valve.
GAS
SUPPLY
MANUAL
SHUT OFF
VALVE
(REQUIRED)
UNION
SEDIMENT
TRAP
Fig. 31 - - Typical Gas Pipe Arrangement
A 1/8- -in. (3 mm) NPT plugged tapping, accessible for test gauge
connection, MUST be installed immediately upstream of gas
supply connection to furnace and downstream of manual
equipment shutoff valve.
Piping should be pressure and leak tested in accordance with the
current addition of the NFGC in the United States, local, and
national plumbing and gas codes before the furnace has been
connected. Refer to current edition of NSCNGPIC in Canada.
After all connections have been made, purge lines and check for
leakage at furnace prior to operating furnace.
NOTE: The furnace gas control valve inlet pressure tap
connection is suitable to use as test gauge connection providing
test pressure DOES NOT exceed maximum 0.5 psig (14- -In. W.C.)
stated on gas control valve. See Fig. 32.
MANIFOLD PRESSURE TAP SET SCREW:
3/32" HEX HEAD ACCEPTS
INLET PRESSURE TAP
5/16" HOSE CONNECTION
SET SCREW: 3/32" HEX HEAD
ACCEPTS 5/16" HOSE
CONNECTION
1/2" NPT
INLET
ON/OFF SWITCH
Representative drawing only, some models may vary in appearance.
Fig. 32 - - Gas Valve with Tower Pressure Ports
FRONT
NOTE: Union may be inside the
vestibule where permitted by
local codes.
A11035
REGULATOR SEAL CAP
(REGULAR ADJ. UNDER CAP)
OUTP
1/2" NPT
OUTLET
A170117
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.
Gas entry can be from left or right side, or top panel. See Figs. 33
and 34.

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 Fig. 33.
Left Side Gas Entry. Gas Pipe
Grommet Required For Direct
Vent Applications.
Fig. 33 - - Gas Entry
1 1/2 inch for Gas
Fig. 34 - - Alternate Gas and Electric Entry
NOTE: Top plate may be field drilled for alternate gas and
115 VAC electric entry.
36
Gas Pipe Grommet Required
For Direct Vent Applications
7/8 inch for 115 VAC Electric
A170125
A11338