Installation
RT-SVX21N-EN 27
Horizontal Discharge Conversion
(3 Through 5 Ton Units)
Note: 3 - 5 ton units supply cover to supply opening and
return cover to return opening.
Supplies needed by installer for conversion: 3 oz. tube of
high temperature RTV sealant. (500°F / 260°C: similar to
Dow Corning 736)
Important: 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.
2. Locate supply cover. Apply ¼ in. (6mm.) continuous
bead of 500°F RTV sealant to the flange as shown.
3. Position duct cover as shown, rotate 90 degrees to
allow entrance into supply opening.
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.
6. After completing installation of the duct covers for
horizontal discharge, proceed toTCO-1 instructions.
TCO-1 Instructions
If the unit being installed is listed in the following list, the
limit controlTCO1 must be replaced with the extra limit
control shipped in the heater compartment. ReplaceTCO1
following the instructions in steps 1 through 3 below. If the
unit being installed does not correspond to any in the
following list, skip steps 1 through 3 and go on to next step
in the installation process.
Unit Model Number
YSC036E**(M,Y),YSC036E**(H,Z),YSC048E**(H,Z),
YSC048E**(M,Y) belt drive ID motor, YSC060E**(H,Z)
direct drive ID motor,YHC047E**(L,X),YHC048E/F**(L,X)
direct drive ID motor,YHC060E/F**(L,X) belt drive ID
motor,YHC036E**(M,Y),YHC037E**(M,Y), YHC048E/
F**(M,Y),YHC060E/F**(M,Y) direct drive ID motor,
YHC036E**(H,Z),YHC048E/F**(H,Z) belt drive ID motor,
YHC060E/F**(H,Z).
1. Remove the heat section access panel.
2. RemoveTCO1 from shipping location, attached to the
combustion blower.
3. Replace and discard the existingTCO1 originally
installed at the factory for down flow operation with
theTCO1 shipped attached to the combustion blower
for horizontal operation.
4. Replace heat section access panel.
Horizontal Discharge Conversion
(6 Through 10 Ton Units)
Note: 6 - 10 ton units the supply cover to return opening
& return cover to supply opening.
Supplies Needed by Installer for Conversion: 3 oz. tube of
highTemperature RTV sealant (500°F / 260°C: Similar to
Dow Corning 736).
Important: 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.
2. Place SUPPLY DUCT COVER over down-flow return
opening. (insulation side down)
Figure 26. Duct cover
RTV Sealant
Figure 27. TCO1 location (YSC036E-YSC060E,YHC036E,
YHC037E)
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.
FLAME
ROLLOUT
LIMIT
LOCATION OF TCO1 LIMIT
FOR THE Y(S/H)C036E, YHC037E,
FOR THE Y(S/H)C036E, YHC037E,
YSC048E, AND YSC060E UNITS
YSC048E, AND YSC060E UNITS
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