Lennox CBX25UHV Series Installation And Service Procedure page 25

Step 1. Remove unit access panels.
Step 3. Relocate TEV sensing bulb to
external suction line.
NEW LOCATION (OUTSIDE OF CABINET)
Step 5. Apply insulation over the suction
line and TEV sensing bulb. Use tape or
cable ties to secure the insulation.
BULB FACTORY
REMOVE
ACCESS
PANELS
NOTE - Route copper away from sharp edges.
Make sure that copper refrigerant lines do not
touch other metal surfaces (end plates, brazed
connections, etc.). Metal-to-metal contact may
transfer vibration or cause damage.
Figure 35. Relocating Expansion Valve Sensing Bulb
Page 25
Step 2. Locate and remove TEV
sensing bulb from factory location.
TEV SENSING
LOCATION
Step 4. Properly position TEV sensing bulb
on suction line and fasten bulb to line.
BULB
SUCTION LINE
SUCTION LINE
BULB
NOTE - Never install the sensing bulb
on the bottom of the line.
9 O'CLOCK TO
3 O'CLOCK
ON LINES SMALLER THAN ⅞",
INSTALL THE SENSING BULB
BETWEEN THE 9 O'CLOCK
BULB
AND 3 O'CLOCK POSITIONS.
ON LINES ⅞" AND LARGER IN DIA­
METER, INSTALL THE SENSING
BULB IN EITHER THE 4 O'CLOCK
OR 8 O'CLOCK POSITION. NEVER
BULB
INSTALL THE SENSING BULB ON
THE BOTTOM OF THE LINE.