3
Easy installation and service —
The 40RMQ multiposition design
and component layout help you to get
the unit installed and running quickly.
The direct-expansion (DX) coils have
factory-installed thermostatic expan-
sion valves (TXVs) with matching dis-
tributor nozzles. All 40RMQ units also
include factory-installed check valves
and piping for heat pump duty with
matching 38AQS units.
The 40RMQ units can be converted
from horizontal to vertical operation by
simply repositioning the unit. Drain
pan connections are duplicated on
both sides of the unit. Fan motors and
contactors are prewired. For easier ser-
vice, the filters, motor, drive, TXVs,
check valves, and coil connections are
accessible by removing a single side
panel.
Indoor-air quality (IAQ) features
—
The unique combination of IAQ fea-
tures in the 40RMQ Series indoor
units helps to make sure that only
clean, fresh, conditioned air is deliv-
ered to the occupied space.
In the Cooling mode, direct-expan-
sion (DX) 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 coils.
Standard 2-in. disposable filters re-
move dust and airborne particles from
the occupied space.
Thermal insulation contains an im-
mobilized anti-microbial agent to inhib-
it the growth of bacteria and fungi. The
anti-microbial agent is registered with
the U.S. Environmental Protection
Agency (EPA).
The pitched PVC drain pan can be
adjusted for a right- or left-hand con-
nection to provide positive drainage
and to prevent standing condensate.
The 40RMQ accessory economizer
can provide ventilation air to improve
indoor air quality. When used in con-
junction with Carrier Comfort System
thermostats and CO
2
sensors, the
economizer admits fresh outdoor air to
replace stale, recirculated indoor air.
Economy —
The 40RMQ Series air
handlers have low initial costs, and
they continue to save money by pro-
viding reduced installation expense and
energy-efficient performance.
Quick installation reduces installation
costs, and TXVs, check valves, and
heat pump piping are factory-installed.
High-efficiency, precision-balanced
fans minimize air turbulence, surging,
and unbalanced operation, cutting op-
erating expenses.
The economizer accessory precisely
controls the blend of outdoor air and
room air to achieve comfort levels.
When the outside air enthalpy is suit-
able, outside air dampers can fully
open to provide “free” cooling.
Rugged dependability —
40RMQ
units are made to last. The die-formed
galvanized steel panels ensure structur-
al integrity under all operating condi-
tions. Galvanized steel fan housings are
securely mounted to a die-formed
galvanized steel deck. Coil housings
are galvanized steel, and coils have alu-
minum fins mechanically bonded to
copper tubes. The PVC condensate
drain pans provide corrosion-free
performance.
Coil flexibility —
Model 40RMQ
coils have galvanized steel casings; in-
let and outlet connections are on the
same end. The coils are designed for
use with Refrigerant 22 and have
3
/
8
-in. diameter copper tubes mechan-
ically bonded to aluminum sine-wave
fins. The coils include matched, facto-
ry-installed TXVs with matching distrib-
utor nozzles. Check valves and heat
pump piping are also included in all
40RMQ units.
Duplicate piping access holes on
both sides of the unit eliminate drilling;
condensate connections for both verti-
cal and horizontal installations are also
provided on both sides of the unit.
Table of contents
Page
Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
ARI Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6,7
Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-11
Dimensions — Outdoor Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12,13
Dimensions — Indoor Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-16
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18-22
Typical Piping and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23,24
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25-27
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Typical Control Wiring Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29-33
Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33-36
Guide Specifications — 38AQS008 Outdoor Units . . . . . . . . . . . . . . . . .37,38
Guide Specifications — 38AQS012,016 Outdoor Units . . . . . . . . . . . . .39-41
Guide Specifications — Indoor Units . . . . . . . . . . . . . . . . . . . . . . . . . . .42,43
Features/Benefits (cont)
