Daikin VHF, Installation And Maintenance Manual

Page: 20 / 64

i
nstallation
IM 986-11 • Vertical Stack WSHP 20 www.DaikinApplied.com
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
Provided loose,
Stub-Out Seal
(Field Installed)
Cabinet
Interior
Knockouts
on Cabinet
Exterior
No Gaps in Seal to
Prevent Air Infiltration
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.
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
Size
Discharge Openings
Single Double Triple
Single-Top
Opening
W H W H W H W H
009–012 14" 16" 14" 8" NR NR 12" 12"
015–018 14" 16" 14" 8" 14" 8" 12" 12"
021–024 NR NR 18" 14" 18" 10" 18" 18"
030–036
NR NR 18" 14" 18" 10" 18" 18"
NR = Not Recommended