Gas Piping - Trane UHMB060ACV3VA Installer's Manual

Installer's Guide
DOWNFLOW (HORIZONTAL)
This tube on downflow units will need to be cut to fit
between the Inducer and the trap. On upflow units, this
tube may need to be extended, using the tubing shipped
with the furnace.
Connections must be made to an OPEN / VENTED
DRAIN. Outdoor draining of the furnace and coil con-
densate is permissible if allowed by local codes.
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!
Caution should be taken to prevent drains from freez-
ing or causing slippery conditions that could lead to
personal injury. Excessive draining of condensate may
cause saturated ground conditions that may result in
damage to plants.
NOTE:
Use 1/2" or larger PVC or CPVC pipe and fittings as re-
quired for drain connections (fittings, pipe and solvent
cement not provided).
NOTE:
A corrosion resistant condensate pump must be used
if a pump is required for a specific drain system.
IMPORTANT:
The condensate drain should be installed with provisions to
prevent winter freeze-up of the condensate drain line. Fro-
zen condensate will block drains, resulting in Furnace shut-
down. If the drain line cannot be installed in a conditioned
space, then UL listed heat tape should be applied as re-
quired to prevent freezing (per manufacturer's instructions).
The heat tape should be rated at 5 or 6 watts per foot at
120 volts. Self-regulating (preferred) or thermostatically
controlled heat tape is required.
NOTE:
All supplied flexible condensate piping is for internal
use only. All condensate piping external to the unit
must be CPVC or PVC piping.
34
Cut off curved end of
Inducer drain hose
CAUTION

GAS PIPING

(
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FIRE - EXPLOSION HAZARD
DO NOT RUN FLEXIBLE GAS LINE THROUGH THE
FURNACE CABINET WALL OR WITHIN THE FURNACE
CABINET. FAILURE TO FOLLOW THIS WARNING
COULD RESULT IN PROPERTY DAMAGE, SERIOUS
PERSONAL INJURY, OR DEATH.
Use a backup wrench on the Gas Valve when installing
Gas Piping to prevent damage to the Gas Valve and
Manifold Assembly.
The upflow/ horizontal furnace is shipped standard for
left side installation of Gas Piping. A knockout is pro-
vided on the right side for an alternate Gas Piping ar-
rangement.
The installation of piping shall be in accordance with
piping codes and the regulations of the local gas com-
pany. Pipe joint compound must be resistant to the
chemical reaction with liquefied petroleum gases. Flex-
ible gas connections, if applied, must not be routed
through the cabinet of the furnace.
Refer to Natural Gas Piping Table 13 for delivery sizes.
NOTE: Refer to local codes and the National Fuel
Gas Code, current edition, for gas pipe require-
ments.
The furnace and its individual shut-off valve must be
disconnected from the Gas Supply Piping system during
any pressure testing of that system at test pressures in
excess of 1/2 psig (3.5 kPa).
The furnace must be isolated from the Gas Supply Pip-
ing by closing its individual manual shut-off valve dur-
ing any pressure testing of the Gas Supply Piping sys-
tem at test pressures equal to or less than 1/2 psig (3.5
kPa).
NOTE:
Maximum pressure to the Gas Valve for natural gas is
13.8" W.C. Minimum pressure is 5.0" W.C. Maximum
pressure to the Gas Valve for Propane is 13.8" W.C.
Minimum pressure is 11.0" W.C.
TABLE OF CUBIC FEET PER HOUR OF GAS
FOR VARIOUS PIPE SIZES AND LENGTHS
PIPE
SIZE
10
1/2 132
3/4 278
1 520
1-1/4 1050
This table is based on Pressure Drop of 0.3 inch W.C. and 0.6 SP.GR. Gas
All Gas fittings must be checked for leaks using a soapy
solution before lighting the furnace. DO NOT CHECK
WITH AN OPEN FLAME!
WARNING
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CAUTION
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TABLE 13
NATURAL GAS ONLY
LENGTH OF PIPE
20 30 40 50
92 73 63 56
190 152 130 115
350 285 245 215
730 590 520 440
60 70
50 46
105 96
195 180
400 370
18-CD30D1-9