Owner manual

18
Note that a heat wheel module will have a 100 series
number identifying it, but will span both tiers also
utilizing a 200 series space, and effectively “skipping”
one of the top-tiered numbers.
If, for any reason, you are unable to identify any
module, or its position in the final assembly, then
consult the salesperson or project engineer.
Table 4.1, Module Code Chart
Code Description
BBA Small Blank Box
BBB Large Blank Box
CLB Cooling Coil
CLC Cooling Coil/Hot Gas Reheat Coil
CLD Electric Heat/Hot Water Coil
CLE Electric Heat
CLF Hot Water/Cooling Coil
CLG Electric Heat/Cooling Coil
CLH Electric Heat/Cooling Coil/Hot Gas Reheat Coil
CLI Cooling or Heating w/ Face Bypass
CLJ Hot Water/Cooling Coil/Hot Gas Reheat Coil
CLK Vertical Cooling Coil
CLL Cooling and Heating w/ Face Bypass
FTA Small Flat Filter
FTB Angled Filter
FTC Cartridge Filter
FTD Bag Filter
FTF Large Flat Filter
HRA Energy Recovery Wheel
MBA Vertical Damper Mixing Box
MBB Horizontal Damper (top) Mixing Box
MBC Horizontal (bottom)/Vertical Damper Mixing Box
MBD Vertical Damper/Filter Mixing Box
MBE Horizontal Damper (top)/Filter Mixing Box
MBF Horizontal Damper (bottom) Mixing Box
MBG Filter Mixing Box (no damper)
MBH Vertical/Horizontal (top) Damper Mixing Box
MBI Filter/Horizontal (bottom) Damper Mixing Box
MBJ Vertical/Horizontal (top) Damper/Filter Mixing Box
MBK Vertical/Horizontal (bottom) Damper/Filter Mixing Box
PEA Power Exhaust
PHA Electric Heat
PHB Hot Water Coil
PHC Filter/Hot Water Coil
PHD Filter/Electric Heat
RFA Return Fan
RHC Hot Gas Reheat Coil
SFA Supply Fan
SFB Vertical Supply Fan
SFC Supply Fan with Top Discharge
TRA Control Box
After identifying modules and determining module
arrangement, you can begin connecting the modules.
Modules are to be connected with nuts and bolts that
are shipped with the unit. Bolt holes are located inside
the module frames near the corners, and in the base
rail below the outside bottom corners of the module
(due to various design criteria, some modules may
have additional bolt holes along the inside of the
module top, and should be used if present). Align
modules, and insert bolts through the bolt holes of two
adjacent modules, and secure with nuts to pull the two
modules together tightly. Every bolt hole must be
used to ensure a tight seal between modules, and a
structurally stable assembly.
Figure 4.4, Bolted Base Rail
Sealing
It is very important to keep outside air from infiltrating
the unit cabinet. Seal all piping penetrations with
Armaflex, Permagum, or other suitable sealant. Also
seal around drain connections, electrical connections,
and all other inlets where air may enter the cabinet.
This is especially important when the unit is installed in
an unconditioned area.
Cooling Equipment
Air Handler Equipped with Refrigerant Coil (DX)
This section is not intended to provide all the
information required by the designer or installer of the
refrigerant piping between the condensing units and
the air handler. The appropriate sections of the
ASHRAE Guide and the ASME standards should be
used for final information. Acceptable system design
and installation will include consideration as follows:
NOTE
All nuts, bolts, and gasketing required for assembl
y
are packaged and shipped with unassembled uni
t
orders.