17
Installation
[ ] Verify that the installation location of the unit will provide
the required clearance for proper operation.
[ ] Assemble and install the roof curb (if applicable). Refer to
the latest edition of the curb installers guide that ships
with each curb kit.
[ ] Fabricate and install ductwork; secure ductwork to curb.
[ ] Install pitch pocket for power supply through building roof.
(If applicable)
[ ] Rigging the unit.
[ ] Set the unit onto the curb; check for levelness.
[ ] Ensure unit-to-curb seal is tight and without buckles or
cracks.
[ ] Install and connect a condensate drain line to the evapo-
rator drain connection.
Factory Installed Economizer
[ ] Ensure the economizer has been pulled out into the oper-
ating position. Refer to the economizer installers guide
for proper position and setup.
[ ] Install all access panels.
Temperature Limit Switch Usage for Gas Heat Units
Units are factory shipped in the downflow discharge
confriguration but can be field converted to a horizontal dis-
charge confriguration. Some, but not all units require a dif-
ferent TC01 limit switch, which is attached to the combustion
blower motor if horizontal discharge confriguration is used.
Note: The following units require a limit switch
change out for horizontal discharge. The additional
limit switch is shipped attached to the blower
housing. Proceed to the Horizontal Discharge
Conversion, Step 5 on page 18 for the following
models "ONLY". Y*C036A**(H,Z) , Y*C048A**(H,Z),
Y*C060A**(H,Z), YHC060A**(M,Y), Y*C072A**(H,Z),
YSC090A**(M,Y), Y*C092A**(M,Y), YHC092A**(H,Z),
Y*C102A**(M,Y), Y*C102A**(H,Z), Y*C120A**(M,Y),
Y*C120A**(H,Z) YSC036E**(L,X), YSC036E**(M,Y),
YSC036E**(H,Z), YSC048E**(L,X), YSC048E**(M,Y),
YSC048E**(H,Z), YSC060E**(L,X), YSC060E**(M,Y),
YSC060E**(H,Z).
If any of the aforementioned units are installed in the
downflow discharge configuration, remove the additional
TC01 limit switch from the combustion blower motor and
discard.
Horizontal Discharge Conversion
3 Through 5 Ton Units
If a unit is to be converted to Horizontal discharge, the fol-
lowing conversion must be preformed:
1. Remove the return and supply duct covers.
2. Apply white gasket to the supply duct cover as shown.
White gasket is located in the Ship With bag located in
the control box.
TCO1 Tripping Values
Downflow / Horizontal
YHC033A**(L,X)
170F
YHC033A**(M,Y)
220F
YHC033A**(H,Z)
190F / 210F
YSC036E**(L,X)
170F
Y*C036A**(L,X)
170F
YSC036E**(M,Y)
220F
Y*C036A**(M,Y)
220F
YSC036E**(H,Z)
115F/190F
Y*C036A**(H,Z)
190F / 210F
YHC043A**(L,X)
170F
YHC043A**(M,Y)
170F
YHC043A**(H,Z)
180F /220F
YSC048E**(L,X)
170F
Y*C048A**(L,X)
170F
YSC048E**(M,Y)
190F/200F
Y*C048A**(M,Y)
170F
YSC048E**(H,Z)
155F/200F
Y*C048A**(H,Z)
180F /220F
YSC060E**(L, X)
155
YHC060A**(L,X)
155F
YSC060E**(M,Y)
170F
YHC060A**(M,Y)
155F / 170F
YSC060E**(H,Z)
170F
YHC060A**(H,Z)
170F / 200F
YHC063A**(L,X)
155F
YHC063A**(M,Y)
155F / 170F
YHC063A**(H,Z)
170F / 200F
YSC060A**(L,X)
170F
YSC060A**(M,Y)
170F
YSC060A**(H,Z)
170F / 200F
Y*C072A**(L,X)
200F
Y*C072A**(M,Y)
200F
Y*C072A**(H,Z)
180F / 210F
YSC090A**(L,X)
200F
YSC090A**(M,Y)
180F / 220F
YSC090A**(H,Z)
200F
YHC092A**(L,X)
225F
YHC092A**(M,Y)
180F / 220F
YHC092A**(H,Z)
180F /220F
YSC092A**(L,X)
200F
YSC092A**(M,Y)
180F / 220F
YSC092A**(H,Z)
200F
Y*C102A**(L,X)
225F
Y*C102A**(M,Y)
180F / 220F
Y*C102A**(H,Z)
190F / 260F
Y*C120A**(L,X)
200F
Y*C120A**(M,Y)
190F / 260F
Y*C120A**(H,Z)
190F / 260F
Unit Model