Daikin VHF Installation And Maintenance Manual page 20

Note: Apply the provided seal to the interior of the cabinet
around the stub-outs. Be sure there are no voids
between the stub-outs and the stub-out seal which
helps prevent air infiltration into the cabinet
Figure 22: Center the riser stub-outs within the knockouts
and apply provided seal to the cabinet interior
Riser Knockouts
Stub-Out Connections
with Valves Centered
within Knockouts
CAUTION
The unit is not designed to support the weight of the risers.
Anchor them securely to the building structure..
5 . Anchor risers to the building structure to prevent vertical
riser movement greater than, plus or minus one inch to
allow for riser expansion or contraction.
IM 986-11 • Vertical Stack WSHP
Knockouts
on Cabinet
Exterior
Cabinet
Interior
Provided loose,
Stub-Out Seal
(Field Installed)
No Gaps in Seal to
Prevent Air Infiltration
20
6 . Solder all supply and return riser connections to units
above and/or below.
7 . Remove riser ties used to secure the risers to the cabinet
during shipping.
WARNING
Before furring-in units, hydrostatically test the risers and
unit connection joints in accordance with local building
codes, to make sure they are leak-proof.
Note: Perform "Cleaning and Flushing Water System" on
page 22
CAUTION
When furring-in units make sure that no screws or nails
penetrate the unit cabinet.
8 . Layout the stud wall floor plates and frame-in unit
referencing "Typical framing & discharge arrangements" on
page 14 and Figure 15 on page 15.
Note: Before cutting and hanging drywall, remove the
appropriate discharge air opening knockout. See
Table 8). Protect unit from construction debris with a
protective cover.
Table 8: Discharge knockout openings
Unit
Single Double
Size
W H W
009–012 14" 16" 14"
015–018 14" 16" 14"
021–024 NR NR 18"
030–036 NR NR 18"
NR = Not Recommended
i
nstallation
Discharge Openings
Single-Top
Triple
Opening
H W H W
8" NR NR 12"
8" 14" 8" 12"
14" 18" 10" 18"
14" 18" 10" 18"
www.DaikinApplied.com
H
12"
12"
18"
18"