Product data

2
Unit sizes 008-016 offer lower utility
costs through part-load operation us-
ing 2 stages of cooling.
Quiet and efficient operation is pro-
vided by belt-driven indoor fans (stan-
dard on all units over 5 tons). The belt-
driven indoor fan is equipped with
variable-pitch pulleys which allow ad-
justment within the rpm ranges of the
factory-supplied pulleys. Increased op-
erating efficiency is achieved through
computer-designed coils featuring stag-
gered internally enhanced copper
tubes. Fins are ripple-edged for
strength, lanced, and double waved for
higher heat transfer.
Durable, dependable
construction
Designed for durability in any climate,
the weather-resistant cabinets are con-
structed of galvanized steel and bond-
erized, and all exterior panels are coat-
ed with a prepainted baked enamel fin-
ish. The paint finish is non-chalking,
and is capable of withstanding ASTM
B117 500-hour Salt Spray Test. All in-
ternal cabinet panels are primed, per-
mitting longer life and a more attrac-
tive appearance for the entire unit.
In addition, all size 004-012 units
are designed with a single, continuous
top piece to eliminate any possible
leaks. Totally enclosed condenser-fan
motors and permanently lubricated
bearings provide additional unit
dependability.
Patented state-of-the-art Chro-
notemp™ defrost system uses time
and temperature to keep the outdoor
coil frost-free for economical, depend-
able operation. The Chronotemp defrost
board can be easily configured for de-
frost cycles every 30, 50, or 90 minutes.
Dependable 4-way valve opera-
tion safely and efficiently accomplish-
es cycle reversals, defrost, and normal
operation.
Easy installation and
conversion
All units are shipped in the verti-
cal duct configuration for fit-up to
standard roof curbs. (3 different curb
sizes fit unit sizes 004-007, 008-012,
and 014-016 respectively.) The con-
tractor can order and install the roof
curb early in the construction stage,
before decisions on size requirements
are made.
All units feature a base rail design
with forklift slots and rigging holes for
easier maneuvering. Durable packag-
ing protects all units during shipment
and storage.
The units can be easily converted
from a vertical to a horizontal duct con-
figuration by relocating the panels sup-
plied with the unit.
To convert 004-012 units from
vertical to horizontal discharge, simply
relocate 2 panels. The same basic unit
can be used for a variety of applica-
tions and can be quickly modified at
the jobsite.
To convert 014-016 units from
vertical to horizontal discharge, use the
optional horizontal supply/return
adapter roof curb.
Convenient duct openings in the
unit basepans permit side-by-side or
concentric duct connections (see Appli-
cation Data section) without requiring
internal unit modification (014,016
only).
NOTE: On units using horizontal sup-
ply and return, the accessory baromet-
ric relief or power exhaust MUST be
installed on the return ductwork.
Thru-the-bottom service connection
capability comes standard with the
rooftop unit to allow power and con-
trol wiring to be routed through the
unit’s basepan, thereby minimizing
roof penetrations (to prevent water
leaks). Power and control connections
are made on the same side of the unit
to simplify installation.
Table of contents
Features/Benefits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
Options and Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-11
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-28
Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28,29
Typical Piping and Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30,31
50TFQ004-012
Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
ARI Capacity Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Physical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33,34
Base Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35,36
Accessory Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37,38
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40-69
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70-78
Typical Wiring Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79,80
Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81-85
50HJQ004-012
Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
ARI Capacity Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Physical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87,88
Base Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89,90
Accessory Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91,92
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94-110
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111-114
Typical Wiring Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115,116
Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117-121
50HJQ014,016
Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
ARI Capacity Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Physical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123,124
Base Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Accessory Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126-128
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130-136
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Typical Wiring Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137-139
Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140-144