Start-Up And Adjustment; Preliminary Inspections; Lighting Instructions - Trane UHMB060ACV3VA Installer's Manual

REINSTALLATION OF THE BURNER BOX COVER
Figure 55 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.

START-UP AND ADJUSTMENT

PRELIMINARY INSPECTIONS

▲
WARNING
!
ELECTRICAL SHOCK HAZARD
Disconnect power to the unit before removing the
blower door. Allow a minimum of 10 seconds for IFC
power supply to discharge to 0 volts.
Failure to follow this warning could result in property
damage, personal injury or death.
NOTE:
The condensate trap must be primed before opera-
tion.
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.
Turn the main Gas Valve toggle switch (See Figure 59)
within the unit to the "OFF" position. Turn the exter-
nal shutoff valve to the "OPEN" position (See Figures
50 and 52). Purge the air from the gas lines. After purg-
18-CD30D1-9
T
ROTATE THE FRONT
COVER AS SHOWN
INSERT THE TOP FLANGE
OF THE FRONT COVER
UNDER THE LIP INSIDE
THE BOX
ALL SIDE FLANGES MUST
BE OUTSIDE OF THE BOX
ROTATE THE FRONT
COVER INWARD MAKING
SURE THAT ALL SIDE
FLANGES ARE OUTSIDE
OF THE BOX.
Installer's Guide
ing, check all gas connections for leaks with a soapy so-
lution — DO NOT CHECK WITH AN OPEN
FLAME. Allow 5 minutes for any gas that might have
escaped to dissipate. LP Gas being heavier than air may
require forced ventilation. Turn the toggle switch on
the Gas Valve in the unit to the "ON" position.
All soap solution should be cleaned off gas piping after
gas leak testing is complete.

LIGHTING INSTRUCTIONS

▲
WARNING
!
FIRE OR EXPLOSION HAZARD
Do NOT attempt to manually light the burner.
Failure to follow this warning could result in property
damage, personal injury or death.
▲ ▲ ▲
CAUTION CAUTION
! !
Whenever your house is to be vacant, arrange to have
someone inspect your house for proper temperature.
This is very important during freezing weather. If for
any reason your furnace should fail to operate damage
could result, such as frozen water pipes.
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 Comfort
Control 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 Comfort Control is satisfied.
TO SHUT OFF
For complete shutdown: Turn the Gas Valve toggle
switch on the main Gas Valve to the "OFF" position
(See Figures 59). Disconnect the electrical supply to
the unit.
▲
CAUTION
!
If complete shutdown is done during the cold weather
months, provisions must be taken to prevent freeze-up
of all water pipes and water receptacles.
NOTE:
Natural gas units should not have any yellow tipped
flames. This condition indicates that a service call is re-
quired. For best operation, burners must be cleaned
annually using brushes and vacuum cleaner.
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