40RM/RMS
Indoor air quality features:
The unique combination of features
in the 40RM Series air handlers en-
suresthat clean, fresh, conditioned air
is deliveredto the occupied space.
Cooling coils prevent the build-up
of humidity in the room, even during
part-load conditions. Unit sizes of
10 tons and above feature dual-circuit
face-splitcoils.
1 inch (25.4 mm) WASHABLE
air filters
remove dust and airborne
particles
from the occupied space.
Standard double skin units provide
an excellent resistance from the
air-borne particles off the insulation
thus maintaining an excellent indoor
air quality (IAQ).
Pitched drain pan can be adjusted
for a right- or left-hand connection to
provide positive drainage and prevent
standing condensate.
Accessory economizer can provide
ventilation air to improve indoor air
quality. When usedwith CO
2
sensors,
the economizer admits fresh outdoor
air to replace stale, recirculated
indoor
air.
Economy
The 40RM Series packaged air
handlers have low initial costs, and
they continue to savemoney by pro-
viding reducedinstallation expense
and energy-efficient performance.
Table of contents
Quick installation is ensuredby the
multiposition design. Units can be
installedin either the horizontal or
vertical (upflow) configuration without
modifications. All units have drain-
pan connectionson both sides,and
pans can be pitched for right- or left-
hand operation with a simple ad-
justment. Fan motors and contactors
are prewired and TXVs are factory-
installedon 40RM models.
High efficiency, precision-
balanced
fans minimize air turbulence, surging
and unbalanced operation, thereby
cutting operating
expenses.
Economizer accessory precisely
controls the blend of outdoor air and
room air to achievecomfort levels.
When the outsideair enthalpy is suit-
able, outside air damperscan fully
open to provide ``free'' cooling.
Rugged dependability
Polyester powder painted (zinc coated)
panels provide excellent resistance to
corrosion and also protect the colour
in the areas where ultra-violet (UV)
radiation factor is high.
Mechanically
bonded coil fins pro-
vide improved heat transfer.
Galvanized steel fan
housings
are
securely mounted to a die-formed
galvanized steel deck.
Rugged pillow-block bearings
(014-034 sizes) are securely fas-
tened to the solid steel fan shaft with
split collets and clamp locking devices.
Page
Smaller unit size shave spider-type
bearings.
Coil flexibility
Model 40RM (direct- expansion coils)
and 40RMS (chilled water coils) have
galvanized steel casings; inlet and
outlet connections are external & on
the same end.
Chilled water coils have
1/2
in.
(12.7 mm) diameter copper tubesme-
chanicallybonded to aluminum sine-
wave fins. All coils have non-ferrous
headers.
Direct expansion (DX) coils are
designed for use with Refrigerant 22
and have copper tubes mechani-
cally bonded to aluminum sine-wave
fins. Direct-expansioncoils include
matched, factory-installed thermostatic
expansion valves(TXVs) with matching
distributor nozzles.
Easier installation and service:
The multi-position designand com-
ponent layout help you to get the unit
installedand running quickly. The DX
coils have factory-installedTXVs with
matching distributor nozzles.Units can
be converted from horizontal to verti-
cal operation by simply reposition-
ing the unit. Drain pan connections
are duplicated on both sidesof the
unit. The filters, motor, drive, TXVs,
and coil connections are easilyaccessed
by removing a single side panels.
Features/Benefits ................................................. 1,2
Model Number Nomenclature ....................................... 3
PhysicalData ..................................................... 4-7
Options and Accessories......................................... 8-10
Dimensions ..................................................... 11-20
Selection Procedure ............................................. 21,22
Performance Data ............................................... 23-39
ElectricalData .................................................. 40-46
Typical Piping and Wiring ........................................ 47-50
Application Data ................................................ 51-59
Guide Specifications ............................................. 60,61
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