Step 12 - Install External Condensate Trap And Line - Bryant Preferred Series Installation Instructions Manual

disconnected from the gas valve during the testing of the piping
systems when test pressure is in excess of 0.5 psig (3450 Pa). Pres-
sure test the gas supply piping system at pressures equal to or less
than 0.5 psig (3450 Pa). The unit heating section must be isolated
from the gas piping system by closing the external main manual
shutoff valve and slightly opening the ground-joint union.
Check for gas leaks at the field-installed and factory-installed
gas lines after all piping connections have been completed. Use
soap-and-water solution (or method specified by local codes
and/or regulations).
WARNING
Failure to follow this warning could result in personal injury,
death and/or property damage.
• Connect gas pipe to unit using a backup wrench to
avoid damaging gas controls.
• Never purge a gas line into a combustion chamber.
• Never test for gas leaks with an open flame. Use a
commercially available soap solution made specifically
for the detection of leaks to check all connections.
• Use proper length of pipe to avoid stress on gas control
manifold.
NOTE: If orifice hole appears damaged or it is suspected to have
been redrilled, check orifice hole with a numbered drill bit of cor-
rect size. Never redrill an orifice. A burr-free and squarely aligned
orifice hole is essential for proper flame characteristics. See
Fig. 23.
Fig. 23 — Orifice Hole
BURNER
ORIFICE
Step 12 — Install External Condensate Trap and Line
The unit has one
of the condensate pan and an alternate connection on the bot-
tom. See Fig. 24. Unit airflow configuration does not deter-
mine which drain connection to use. Either drain connection
can be used with vertical or horizontal applications.
16
ATTENTION
After the installation of the unit gas piping and prior to gas
heat start up, ensure that the distances between the main burner
orifice and the burner box inlet tube meet those shown below.
If not, loosen the orifice alignment screw on the bracket
shown, slide the assembly to meet those distances then tighten
the screw to secure the gas orifice assembly.
BURNER BOX
SEE
DETAIL "A"
FRONT VIEW - GAS ASSEMBLY AND BURNER BOX
DETAIL "A"
GAS COMBUSTION TUBE
A
B
A B
11/16 in. 7/16 in.
17.4 mm 11.1 mm
/ -in. condensate drain connection on the end
3
4
CONDENSATE PAN (SIDE VIEW)
STANDARD
DRAIN
SIDE DRAIN
(FACTORY-INSTALLED)
Fig. 24 — Condensate Drain Pan (Side View)
GAS INDUCER MOTOR
GAS
VALVE
GAS MANIFOLD
PRESSURE PORT
ORIFICE ASSEMBLY
ALIGNMENT SCREW
ALTERNATE
PLUG
BOTTOM DRAIN