Tyler Advantage NFNX, Installation & Service Manual

NFNX, NCNX, NFNGX,

NCNGX

Installation & Service Manual

Defrost Heater Replacement

WARNING

Always shut off electricity to case before
replacing a defrost heater.  Automatic
cycling of fans or electrical power to wire
ends could cause personal injury and/or
death.

Models NFNX/NCNX/NFNGX/NCNGX

1. Remove bottom trays from case.

2. Unclip and lift up fan plenum (1).

3. Disconnect defective defrost heater (2)

and remove from mounting clips (3) and
case.

4. Install new defrost heater (4) in reverse

order.

5. Restore electrical power to case.

Page 15

November, 2007

Anti-Sweat Replacement

WARNING

Shut off or disconnect power supply to
case before changing an anti-sweat.
Electrical power from wire ends could
damage other components and/or cause
personal injury or death.

Discharge Air Grid Anti-Sweat 
(NFNX/NCNX)

1. Remove screws (1) retainer strip (2) and

discharge air grid (3) from interior of the
front case wall (4).

2. Remove mounting screws and support

assembly (5) from air grid opening.

3. Disconnect or cut the defective anti-sweat

wire (6) from the case wires.

4. Remove and replace the aluminum tape

and defective anti-sweat wire (6) from top
of support assembly (5).

5. Reconnect the anti-sweat wires and

replace the support assembly, discharge
air grid and mounting hardware.