Specifications

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Figure 10: 2" Return Air Duct Collar and Filter Rack
Dimensions Unit Sizes 072-120
*2⅛"
6"
Optional 2" Filter Rack & Return Air Duct Collar
Theoptional2"lterrackandductcollaraccepts2"(51
mm)thickltersforsideremoval.Itreplacestheexisting1"
(25mm)lterrackandductcollar.
The optional 2" return air duct collar kit is used to facili-
tate connection of return air duct to the unit. A duct collar kit
canbeusedinconjunctionwiththestandard1"thicklter
rackortheoptional2"lterrack.
The kits are installed as follows:
1. Removealllters,lterracksandbrackets.Saveall
screws. Discard bracket end.
2. Attachtopductcollarinconjunctionwithtoplterrack
with truss head screws.
3. Attachbottomductcollarandlterrack.
4. Onsinglecompressorunits,attachtwoangesusingfour
(4) #8 truss head screws provided.
5. Attach center support in original location.
6. Locateandattachcenterlterracksusingscrewprovided.
7. Attach duct collar sides using eight (8) #10 sheetmetal
8. No point in the drain system may be above the drain
connection of any unit.
9. Automaticowcontrolleddevicesmustnotbeinstalled
 priortosystemcleaningandushing.
10. A high point of the piping system must be vented.
11. Checklocalcodefortheneedofdielectricttings.
Figure 9: 2" Return Air Filter Rack
50
1
/
16
"
30⅞"
6"
74
1
/
16
"
38
3
/
16
"
Figure 11: 2" Return Air Duct Collar and Filter Rack
Dimensions Unit Sizes 180-290