Service manual

THE SMART SOLUTION FOR ENERGY EFFICIENCY
Vertical Stack
Rev.: 11/09/12
9
climatemaster.com
2. Move cabinet into position. CAUTION: Keep risers
off the fl oor while moving cabinet. Look into risers
and remove any debris. From the bottom of the riser,
measure up 2” and mark. See 6B.
3. Raise the cabinet upright, align it and fi t 3 risers into
the risers below. The top of each riser is equipped
with a 3" swagged section. Insertion must be 1”
minimum to 2” maximum. Modify risers or use
extensions if needed.
4. Center risers in the slab opening and shim the cabinet
level. Plumb risers in two planes to assure proper unit
operation and condensate drainage.
5. Attach the cabinet assembly to the fl oor on at least
two sides using sheet metal angles. If risers are
secured to building structure and clamped to cabinet,
mounting angles are not required. A base vibration
dampening pad is recommended to help eliminate
transfer of vibration to the structure. Material of
0.070 to 0.125 inches thick should be applied to the
perimeter of the cabinet base. Additional anchorage
can be provided by installing brackets at the top of
the cabinet.
6. DO NOT attach drywall studs to cabinet. When all
units on a riser are anchored into place, complete riser
joints as follows:
a. Center the horizontal supply and return runouts
in the expansion slots provided in the back
panel of the cabinet assembly. Assure that
runouts are perpendicular to the back panel.
b. Verify that all riser joints are vertically aligned
and that risers penetrate 1” to 2” into the
swaged joint of the riser below. DO NOT let
riser joint bottom out.
c. Braze riser joints with a high-temperature alloy
(such as Phos-copper or Silfos). Soft solder (50-
50, 60-40 or 85-15) or low-temperature alloys
are NOT suitable for this application.
d. Anchor built-in risers to the building
structure with at least one contact point.
To accommodate vertical expansion and
contraction DO NOT fasten risers rigidly within
the unit.
e. Verify that unit shut-off valves are closed. DO
NOT OPEN VALVES until the system has been
cleaned and fl ushed.
f. Pressure check riser - locate and repair leaks.
g. Check condensate drain - clean pan if needed.
Slowly pour 1 to 2 quarts of water into pan.
Water should drain freely. check for water on
fl oor. Note: If cabinet is slave, make sure P-Trap
Hose is connected and clamped to master.
h. Repair or replace any damaged or missing
insulation on risers.
Optional G and H Panel Frame - Position studs in
front of cabinet and install frame in opening. Seal the
gap between the cabinet and the opening. If fresh air
motorized damper assembly is used, fi eld fabricate and
install duct from outside to frame opening. Assembly is
installed later. See instructions with assembly. NOTICE!
Allow for wallboard thickness under frame front fl ange.
Optional Field Supplied Duct Installation - When return
air is required to enter the unit through openings in a stud
wall, supply and fi eld install an optional duct. Seal duct
against the return air grille. Add a blockoff above and
below the chassis to ensure that all air entering the unit
passes through the fi lter and refrigerant-to-air coil. Sheet
metal ductwork must not be attached to the cabinet. A
canvas type fl exible connection should be used between
the cabinet and the ductwork.
When supply air is ducted from unit, sheet metal ductwork
must not be attached to the cabinet. A canvas-type
fl exible connection should be used between the cabinet
and the ductwork.
i. To facilitate cleaning and fl ushing, install the
hose kit at the end farthest from the pump and
connect the ends of the hoses with the riser
fl ush adapter (Kit - AFL5751). Then open both
valves before pumping fresh water through
the system, close the valves when the system
is clean. Remove the fl ush adapter before
installing the chassis.
Note: Refer to System Flushing Section of
this manual for more information.
j. Install vents in piping loop as required to
bleed the system of air accumulated during
installation. Optional factory installed air vents
may be ordered.
 CAUTION! 
CAUTION! ClimateMaster strongly recommends all piping
connections, both internal and external to the unit, be
pressure tested for leakage by an appropriate method prior
to any fi nishing of the interior space or before access to all
connections is limited. ClimateMaster will not be responsible
or liable for damages from water leaks due to inadequate or
a lack of pressurized leak testing during installation.
Electrical Connections - Complete all electrical
connections prior to enclosing cabinet. See Electrical
Section.