Installation
24
RT-SVX23G-EN
•
Install and connect a condensate drain line to the
evaporator drain connection.
Note:
Condensate Overflow Switch (if equipped) will not
work if unit is not level or slightly sloped toward
switch.
Factory Installed Economizer
•
Ensure the economizer has been pulled out into the
operating position. Refer to the economizer installers
guide for proper position and setup.
•
Install all access panels.
Temperature Limit Switch Usage for
Electric Heat Units
Units are factory shipped in the downflow discharge
configuration but can be field converted to a horizontal
discharge configuration. Some, but not all units require a
different TCO-A limit switch, which is wire tied near the
terminal block in the heater compartment if horizontal
discharge configuration is used. See
Figure 29, p. 25
for
the location of TCO-A.
Horizontal Discharge Conversion
WSC036E, WSC048E (3 to 4 Ton
Units)
Note:
3 to 4 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 in
Figure 24, p. 24
.
3. Position SUPPLY DUCT COVER as shown, rotate 90
degrees to allow entrance into supply opening.
4. Slide SUPPLY DUCT COVER 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 out-ward 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 required for the unit
undergoing installation.
6. After completing installation of the duct covers for
horizontal discharge, proceed to TCO-1 instructions.
Horizontal Discharge Conversion
WSC060-120E (5 to 10 Ton Units)
Note:
5 to 10 ton units supply cover to return opening and
return cover to supply 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. Place SUPPLY DUCT COVER over downflow return
opening. (insulation side down)
3. Using self-drilling screws, (or screws removed from
duct cover), screw through dimples to attach Duct
Cover to base.
Figure 24.
Supply duct cover
RTV Sealant
Figure 25.
Supply & return openings
Supply duct cover with
RTV installed
