Chassis Installation - Friedrich VEA09K25 Installation & Operation Manual

Ductwork Preparation
Duct ESP:
To determine your system's indoor external static pressure (ESP,
in inches of water) use a duct calculator (as provided by your duct
supplier). Include all flex duct transitions and discharge grille(s).
If flex duct is used, be sure all the slack is pulled out of the flex
duct. Flex duct ESP can increase considerably when not fully
extended. DO NOT EXCEED a total of .30 ESP, as this is the
MAXIMUM design limit for the VERT-I-PAK A-Series unit.

Chassis Installation

Install the following components
A. Ensure that the wall plenum is installed in accordance
with the VPAWP1-8/1-14 Installation Manual.
B. Place the chassis into the closet with the outdoor side
facing the wall plenum opening.
C. Slide the chassis into the wall plenum until the plenum
divider seal is established. (See Figure 9)
Figure 9
Slide-in View / Chassis Installation
The Vert-I-Pak chassis must be inserted into the wall plenum so that the plenum divider gasket makes contact with the plastic condenser
baffle on the unit. The chassis will fit approximately 2
920-075-09
Determining the Indoor CFM: Chart A – CFM
ESP (")
BTU/h
Correct CFM (if needed):
Chart B – Correction Multipli
Correction Multipliers for:
/ " into the wall plenum.
3
8
Capacity
18000 12000 / 9000
.00 520
.10 510
.20 500
.30 490
230V 1.00
208V 0.97
Heating 1.00
Cooling 0.95
420
410
370
330
ers
9