-
12
-
(3)Ductwork
Prepare the closet ductwork for later connection
to the case.
The total flow rate(CFM) and external static
pressure (ESP) available can be estimated from
the chart below.
The collar on top of the case accepts standard
10"duct.Pull all duct tight. Extra duct slack can
greatly increase Static pressure.
NOTICE:
Flex duct can collapse and cause
airflow restrictions. Do not use flex duct for 90°
bends or unsupported runs of 5 ft. or more.
Your airflow should be balanced based on many
factors such as available ESP room CFM. and
ductwork. Consult an HVAC engineer for proper
applications. External static pressure ( ESP )
can be measured with a manometer or pitot
tube. Once this ESP is established you can
calculate the CFM use above char
(4)Install And Connect The Case
1. Remove the front case panel and pull the unit
out of the case. Place the empty case onto the
platform in the closet with the outdoor side facing
the wall plenum opening. Align the case with
plenum opening and attach.
High
CFM
Medium
CFM
Medium
CFM
Low
CFM
0.00
550
425
425
410
0.04
515
395
395
375
0.10
465
350
350
320
0.15
440
300
300
270
0.20
405
240
240
205
0.25
365
180
180
120
0.30
310
-
-
-
0.00
550
475
475
410
0.04
515
440
440
375
0.10
465
390
390
320
0.15
440
355
355
270
0.20
405
300
300
205
0.25
365
235
235
120
0.30
310
180
180
-
0.00
-
-
550
475
0.04
-
-
515
440
0.10
-
-
465
390
0.15
-
-
440
355
0.20
-
-
405
300
0.25
-
-
365
235
0.30
-
-
310
180
OFF
15K
Airflow -CFM
ESP
(in.water)
09K
12K
Indoor Fan CFM
Duct Select Switch
ON
Inside
wall
metal
duct
Air
discharge
outlet
Leveling legs
3. Using field-supplied screws, bolt the case to the
platform.
4
.
2
.
Primary female
drain fitting 3/4”
Bolt case
to platform
External
drain
OR
Internal
Drain(s)
NOTE: Piping is not
supplied with the unit.
Obtain locally.