210.100-IOM (JUL 2021)
Page 17
AcuAir Hygienic Air Units
Installation
Insulating the base reconnect seam
of an AcuAir Performance Series
unit
When two AcuAir
®
unit sections are drawn together the
base channels of the two sections form an uninsulated
cavity that under certain conditions could produce con-
densation. AcuAir
®
provides a ship loose foam insulation
kit to fill this cavity as part of the reconnect procedure.
On the Performance Series air units this insulation must be
injected from underneath the unit after the sections have
been securely joined.
Follow the instructions in
Foam Kit 15 use guidelines for
AcuAir unit base reconnect insulation
for preparing the
two part foam mixture and the injection kit. Take special
note of the 30 s inactivity limit after which the injection
nozzle may become permanently clogged.
Inject foam into the cavity at a rate of 3 bd-ft to 4 bd-ft
for each linear foot of seam. This means a 15 bd-ft can of
expanding foam fills between 4 ft to 5 ft (linear) of AcuAir
®
reconnect seam.
INTERNAL RECONNECT
(AcuAir Performance Series Only)
.25 MINIMUM DIA. PARALLEL CONTINUOUS BEADS OF
POLYURETHANE CAULKING REQ’D (BOTH FACES OF SPLIT)
PRIOR TO REASSEMBLING
RECONNECT, HOUSING, AND
HARDWARE NOT SHOWN THIS SIDE
FOR CLARITY
HOUSING
Foam Injected
From Underneath
Figure 12: Foam injection underneath base assembly attachment - relates to AcuAir performance series unit only
NOTICE
Inject the foam into the open seam after the air unit
sections have been securely reconnected.
NOTICE
If foam dispensing has stopped for more than 30 s,
replace the nozzle with the extra provided.
