Ductwork - York International ZQ Series Installation Manual

Table 4: ZQ04-06 Unit Clearances
Direction Distance (in.)
Top 1
72
Front 36
18 2 /36 3
Rear
1 Units must be installed outdoors. Over hanging structure or
shrubs should not obscure condenser air discharge outlet.
Figure 13: 1RC0456, 1RC0458 Roof Curb Dimensions
Table 5: Unit Models used with 1RC0456, 1RC0458
Roof Curb
• ZQ04
• ZQ05
• ZQ06
Note: If utilities are required thru the base of
the unit or thru the roof curb the following field
installed accessories can be purchased thru
your dealer or contractor:
1TB0401 - Thru the base electrical and thru the
curb gas
1TB0403 - Thru the base electrical and gas
16 INSTALLATION MANUAL ZQ SERIES 3 - 5 ton 60 Hertz R-410A
Direction Distance (in.)
Right 18
Left 12
Bottom 4
1
Johnson Controls Ducted Systems
2 Units without economizer or power exhaust.
3 Units equipped with an Economizer or Power Exhaust. Flue
products must not be discharged within 10 Feet of the rear
of the unit.
4 Units may be installed on combustible floors made from
wood or class A, B or C roof covering materials.

Ductwork

Ductwork should be designed and sized according
to the methods in Manual D of the Air Conditioning
Contractors of America (ACCA) or as recommended
by any other recognized authority such as ASHRAE
or SMACNA.
A closed return duct system should be used. This
will not preclude use of economizers or outdoor
fresh air intake. The supply and return air duct
connections at the unit should be made with flexible
joints to minimize noise.
The supply and return air duct systems should
be designed for the CFM and static pressure
requirements of the job. They should NOT be sized
to match the dimensions of the duct connections on
the unit.