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Installation Instructions
[] INSTALL THE DRAIN
An external or an internal chain must |xe attached to
the ch"ain connector.
External Drain
Attach a 90 ° PV(: elbow to tile unit's fbmale 3/4" NPI'
drain connectol: Lse the other end of the dbow to
1/111a 3/4" Sch.40 PVC pipe through the knockout
holes ot both the wall plmmm and the archimctural
louver 1o the outside. Seal the gap between th_
plenum hole and PVC ulbe. S_e the Installation
Instructions ill the l_\'_kI,l.
Insidewall Side View
PVC
(Externaldrain}
90° Elbow
Internal Drain
Attach PVC to the tmit's ti:male 3/4" NPI" &-,tin
connectoc Se( tim ]nsmllalioll Inslluetions ill tile
IL\VALI. Local cod(s may appl>:
insidewall Side View
(Internaldrain}
[] DUCTWORK
Prepare tile closet ductwork {be later connection to
the case.
The total flow role (CF*[) and exlernal static pres,,ure
(ESP) awilable can be esthnamd from tile chart below.
[ 7s*!these charts to select x_mr thn speed setting. Th_
,v
collar on top of th_ ca_ a(cepts standaM 10 duct.
Pull all duct tight. Extra duct slack can gl>atly increase
slatic pressur(.
CAUTION: Flex duct can collapse and cause airflow
re_tricfion_ Do not rtse flex duct for 90 °bends or
unsupported runs of 5 fL or more.
Airflow - CFM@230 Volts and @ 265 Volts
IndoorFanCFM
ESP High Medium Medium Low
(in.water) CFM CFM CFM CFM
0.0 390 340 340 305
0.1 370 320 320 290
_- 0.2 350 300 300 270
0.3 330 280 280 250
'_ 0.4 310 260 260 230
0.0 475 390 390 350
0.1 450 370 370 325
==
_- 0.2 425 350 350 300
0.3 400 330 330 275
'_ 0.4 375 315 315 250
oo 0.0 630 545 545 490
0.1 610 530 530 480
== 0.2 590 515 515 470
0.3 570 495 495 455
'_ 0.4 550 475 475 440
Tocorrectfor208volts:O.91
Y*_ur airflow should be balanc(d based on many
thctors, such as available ESP, room CFM, and
ductwork. Consuh all I l_:\C engineer fi'w proper
applications. External static pressure (ESP) can be
measm-ed with a manolneter or pitot tube. Once this
ESP is esta])lished, }ou can calculate tile CFM using
tile above chalt.
CFM Recommendations
• =RecommendedMidRange
] tigher CFMs rand to increas{ Sensible capaci b,
enhallce l-o(Nn cii-ct]lation an(1 it]crease duct iloise,
while lower CFMs tend to increase Latent capacit}
and rt duce noise.
19
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