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Installation
Table 3. TC01 tripping values – two- stage gas
(continued)
Unit Model
Tons
Number
YHJ210***(0,A)L
YHJ210***(0,A)M
17.5
YHJ210***(0,A)H
YHJ240***(0,A)L
YHJ240***(0,A)M
20
YHJ240***(0,A)H
YHJ300***(0,A)L
YHJ300***(0,A)M
25
YHJ300***(0,A)H
Table 4. TCO1 tripping values – Modulating gas (digit
10 = B)
Unit Model
Tons
Number
YHJ072***BL
6
YHJ072***BH
YHJ090***BL
7.5
YHJ090***BH
YHJ102***BL
8.5
YHJ102***BH
YHJ120***BL
10
YHJ120***BH
YHJ150***BL
12.5
YHJ150***BH
YHJ180***BL
15
YHJ180***BH
YHJ210***BL
17.5
YHJ210***BH
YHJ240***BL
20
YHJ240***BH
YHJ300***BL
25
YHJ300***BH
Horizontal Discharge
Conversion (6 to 12.5 Ton Units)
Notes:
•
15 to 25 ton units require purchase of an
accessory kit for conversion.
•
6 to 12.5 ton units move the supply cover to
return opening and return cover to supply
opening.
Supplies needed by installer for conversion: 3 ounce 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.
2. Place SUPPLY DUCT COVER over downflow return
34
TCO1 Tripping Values -
Downflow/Horizontal
140°F-3"/150-7"
150°F-3"/195°F-3"
150°F-3"/200°F-3"
140°F-3"/150-7"
150°F-3"/195°F-3"
150°F-3"/200°F-3"
140°F-3"/150-7"
150°F-3"/195°F-3"
150°F-3"/200°F-3"
TCO1 Tripping Values -
Downflow/Horizontal
145°F - 7" stilt
145°F - 7" stilt
145°F - 7" stilt
145°F - 7" stilt
145°F - 7" stilt
105°F - 3" stilt
125°F - 3" stilt
140°F button
125°F - 3" stilt
140°F button
125°F - 3" stilt
140°F button
125°F - 3" stilt
140°F button
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 43. Supply duct cover
4. On original RETURN DUCT COVER, apply ¼-inch (6
mm.) continuous bead of 500°F RTV sealant around
flange (opposite insulation side), as shown.
Figure 44. Return duct cover
RTV Sealant
5. Slide RETURN DUCT COVER (insulation side up) into
supply opening until inward edge of duct cover
engages with the two retaining clips on the duct flange.
Secure outward edge of the duct cover with two
screws.
Notes:
•
If unit is equipped with Return Air Smoke
Detector, refer to field conversion instructions
for horizontal discharge before installing
return air duct.
•
If unit is equipped with Discharge Air Sensing
option refer to the following figure for proper
tube positioning based on unit supply duct
orientation / tonnage or see ACC-SVN240*-
EN for more details.
Important: For units with model number digit 10 = B
modulating heat, DAS configuration
change is required for horizontal duct
hookup. See
(Select Modulating Gas Heat Units)," p. 35
for instructions.
"DAS Horizontal Conversions
RT-SVX075C-EN
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