Tco-1 Instructions; Horizontal Discharge Conversion - American Standard YSC036A Installation, Operation And Maintenance Manual

Figure 13.
RTV Sealant
3. Position duct cover as shown,
rotate 90 degrees to allow
entrance into supply opening.
Note: If unit is equipped with
Discharge Air Sensing option
refer to the following figure
for proper tube positioning
based on unit tonnage.
Figure 14.
4. Slide duct covers into duct
openings until inward edge of
duct cover engages with the 2
retaining clips on the duct
flanges. Secure the outward
edge of each duct cover with 2
screws.
5. Slide RETURN DUCT COVER
(insulation side up) into supply
opening until inward edge of
duct cover engages with the 2
retaining clips on the duct flange.
Secure outward edge of the duct
cover with two screws.
Note: Certain unit/electric heater
combinations require a limit
switch change out for
horizontal airflow
applications. Refer to the
following instructions to
determine if this process is
22
required for the unit
undergoing installation.
6. After completing installation of
the duct covers for horizontal
discharge, proceed to TCO-1
instructions.

TCO-1 Instructions:

If the unit being installed is listed in
the following table the limit control
TCO1 must be replaced with the
extra limit control shipped in the
heater compartment. Replace TCO1
following the instructions in steps
1through 3 below. If the unit being
installed does not correspond to any
in the following table, skip steps1
through 3 and go on to next step in
the installation process.
Unit Model Number
YSC036E**(M,Y), YSC036E**(H,Z),
YSC048E**(H,Z), YHC043A**(H,Z),
YSC048A**(H,Z), YHC063A**(M,Y),
YSC060A**(H,Z), YHC063A**(H,Z),
YSC048E**(M,Y) belt drive ID motor,
YSC060E**(H,Z) direct drive ID
motor, YHC048E**(L,X) direct drive
ID motor, YHC060E**(L,X) belt drive
ID motor, YHC036E**(M,Y),
YHC048E**(M,Y), YHC060E**(M,Y)
direct drive ID motor,
YHC036E**(H,Z), YHC048E**(H,Z)
belt drive ID motor, YHC060E**(H,Z).
Figure 15.
Installation
Figure 16.
LOCATION OF TCO1 LIMIT LOCATION OF TCO1 LIMIT
FOR THE Y(S/H)C036E, YS048E, FOR THE Y(S/H)C036E, YS048E,
AND YSC060E UNITS AND YSC060E UNITS
FLAME FLAME
ROLLOUT ROLLOUT
LIMIT LIMIT
WARNING
Hazardous Voltage!
Disconnect all electric power,
including remote disconnects before
servicing. Follow proper lockout/
tagout procedures to ensure the
power can not be inadvertently
energized. Failure to disconnect
power before servicing could result
in death or serious injury.
1. Remove the heat section access
panel.
2. Remove TCO1 from shipping
location, attached to the
combustion blower.
3. Replace and discard the existing
TCO1 originally installed at the
factory for downflow operation
with the TCO1 shipped attached
to the combustion blower for
horizontal operation.
4. Replace heat section access
panel.
Horizontal Discharge
Conversion
6 Through 10 Ton Units
Supplies Needed by Installer for
Conversion: 3 oz. tube of high
Temperature RTV sealant. ( 500°F /
260°C : Similar to Dow Corning 736 )
Note: Failure to use recommended
sealant could result in unit
performance loss.
If a unit is to be converted to a
Horizontal discharge, the following
conversion must be performed:
1. Remove RETURN and SUPPLY
duct covers.
RT-SVX21F-EN