Carrier 59TN6B Installation, Start-Up, Operating And Service And Maintenance Instructions page 67

CAUTION
!
UNIT OPERATION HAZARD
Failure to follow this caution may result in intermittent unit
operation or performance satisfaction.
Condensate trap must be PRIMED or proper draining may
not occur. The condensate trap has two internal chambers
which can ONLY be primed by pouring water into the
inducer drain side of condensate trap.
1. Remove upper and middle collector box drain plugs oppo-
site of the condensate trap.
2. Connect field-supplied 5/8- -in. (16 mm) ID tube with at-
tached funnel to upper collector box drain connection. See
Fig. 59.
3. Pour one quart (liter) of water into funnel/tube. Water
should run through collector box, overfill condensate trap,
and flow into open field drain.
4. Remove funnel; replace collector box drain plug.
5. Connect field- -supplied 5/8- -in. (16mm) ID tube to middle
collector box drain port.
6. Pour one quart (liter) of water into funnel/tube. Water
should run through collector box, overfill condensate trap,
and flow into open field drain.
7. Remove funnel and tube from collector box and replace col-
lector box drain plug.
Fig. 59 - - Priming Condensate Trap
Purge Gas Lines
If not previously done, purge the lines after all connections have
been made and check for leaks.
WARNING
!
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury, death, and/or property damage.
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. A fire or explosion may
result causing property damage, personal injury or loss of
life.
See Fig. 59.
A11392
Adjustments
WARNING
!
FIRE HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
DO NOT bottom out gas valve regulator adjusting screw.
This can result in unregulated manifold pressure and result
in excess overfire and heat exchanger failures.
CAUTION
!
FURNACE DAMAGE HAZARD
Failure to follow this caution may result in reduced furnace
life.
DO NOT redrill orifices. Improper drilling (burrs,
out- -of- -round holes, etc.) can cause excessive burner noise
and misdirection of burner flames. This can result in flame
impingement of heat exchangers, causing failures. See Fig.
60.
For proper operation and long term reliability, the Furnace input
rate must be within +/- -2 percent of input rate on furnace rating
plate, or as adjusted for altitude.
The gas input rate on rating plate is for installations at altitudes up
to 2000 ft. (609.6M).
Fig. 60 - - Orifice Hole
67
BURNER
ORIFICE
A93059