Start Up And Adjustment - Trane UX1B040A9241A Installation Manual

See Table 17 & 18 for help in selecting orifices if orifice
change is required. Furnace input rate and tempera-
ture rise should be checked again after changing ori-
fices to confirm the proper rate for the altitude.
Installations above 4,000 feet may require a pressure
switch change. If required, use the BAYHALT*** Kit
(High Altitude Accessory Kit) listed in PRODUCT DATA.
TABLE 17
PART NUMBERS FOR REPLACEMENT ORIFICES
DRILL PART
SIZE NUMBER
44 ORF00501
45 ORF00644
46 ORF00909
47 ORF00910
48 ORF01099
49 ORF00503
50 ORF00493
REINSTALLATION OF THE BURNER BOX COVER
Figure 57 shows the correct way to reinstall the burner
box cover if adjustment or replacement of the flame
sensor, hot surface igniter, or main burner orifices have
required removal of the cover.
TABLE 18
Orifice
ALTITUDE ABOVE SEA LEVEL
Twist Drill
Size If
and Orifice Required At Other Elevations
Installed
At Sea
Level
2000 3000 4000 5000 6000 7000 8000 9000 10000
42 42 43 43
43 44 44 44
44 45 45 45
45 46 47 47
46 47 47 47
47 48 48 49
54 54 55 55
55 55 55 55
56 56 56 57
57 58 59 59
58 59 60 60
From National Fuel Gas Code - Table F-4
▲
WARNING
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow the installation instructions for the
venting system being placed into operation could re-
sult in carbon monoxide poisoning or death.

START UP AND ADJUSTMENT

PRELIMINARY INSPECTIONS
With gas and electrical power "OFF"
1. Duct connections are properly sealed
2. Filters are in place
3. Venting is properly assembled
4. Blower door is in place
Flip the switch on main gas valve within the unit to the
"OFF" position. Turn the external gas valve to "ON".
Purge the air from the gas lines. After purging, Check
all gas connections for leaks with a soapy solution —
18-CD19D6-32
DRILL PART
SIZE NUMBER
54 ORF00555
55 ORF00693
56 ORF00907
57 ORF00908
58 ORF01338
59 ORF01339
43 44 44 45 46
45 45 46 47 47
46 47 47 48 48
47 48 48 49 49
48 48 49 49 50
49 49 50 50 51
55 55 55 56 56
56 56 56 56 56
57 57 58 59 59
60 60 61 62 63
61 62 62 63 63
DO NOT CHECK WITH AN OPEN FLAME. Allow 5
minutes for any gas that might have escaped to dissi-
pate. LP Gas being heavier than air may require forced
ventilation. Flip the switch on the gas valve in the unit
to the "ON" position.
I
Outlet Pressure Boss
Inlet Pressure
Boss (opt.)
White-Rodgers 36G gas valve
O
On/Off ff Swi
47
48
50
50
51
52
56
57
60
63
White-Rodgers 36F gas valve
64
LIGHTING INSTRUCTIONS
DO NOT attempt to manually light the burner.
Failure to follow this warning could result in property
damage, personal injury or death.
Lighting instructions appear on each unit. Each instal-
lation must be checked out at the time of initial start up
to insure proper operation of all components. Check out
should include putting the unit through one complete
cycle as outlined below.
Turn on the main electrical supply and set the thermo-
stat above the indicated temperature. The ignitor will
automatically heat, then the gas valve is energized to
permit the flow of gas to the burners. After ignition and
flame is established, the flame control module monitors
the flame and supplies power to the gas valve until the
thermostat is satisfied.
Installer's Guide
On/Off Switch
Switch ch
▲
WARNING
!
Regulator
Adjustment
35