Carrier APOLLO CONTROL 50HJQ004-016 Operation manual

1
50HJQ004---016
50TFQ004---012
50HEQ003---006
S i n g l e --- P a c k a g e R o o f t o p
Standard and High Efficiency Heat Pump Units
Product Data
C06101
50HJQ004--007, 50TFQ004--007, 50HEQ003--006
C06102
50HJQ008--012, 50TFQ008--012
C06103
50HJQ014--016
Standard-Efficiency (TFQ), and High-Efficiency (HJQ and
HEQ) heat pump units offer:
SPre-painted galvanized steel cabinet for long life and
quality appearance.
SCommercial strength base rails with built-in rigging
capability.
SConvertible design for vertical or horizontal
supply/return.
SNon-corrosive, sloped condensate drain pan, meets
ASHRAE 62 (IAQ).
STwo-inch return-air filters.
SA wide assortment of factory-installed options
available, including high-static drives that provide
additional performance range.
SFactory-installed PremierLink™digital communicating
controls.
SFactory-installed optional gear driven EconoMi$er IV
(vertical return for sizes 004-012 only) for use with
standard rooftop unit controls (in-cludes CO2sensor
control capability).
SFactory-installed optional gear driven EconoMi$er2
(vertical return only) for use with PremierLink DDC
controls (includes 4 to 20 mA actuator for demand
control ventilation).
SState-of-the-art defrost system.
SDependable 4-way valve operation.
Heat Options
SField-installed electric heat available.
SGlycol hydronic coils.
FEATURES/BENEFITS
Every compact one-piece unit arrives fully assembled, charged,
tested, and ready to run.
Quiet, efficient operation and dependable performance.
Compressors have vibration isolators for quiet operation.
Efficient fan and motor design permits operation at low sound
levels.

2
TABLE OF CONTENTS
Features/Benefits 1 --- 4..........................
Model Number Nomenclature 4 --- 6...............
ARI Capacity Ratings 7 --- 9......................
Options and Accessories 10-16..................
50TFQ
Physical Data 18................................
Base Unit Dimensions 19,20......................
Accessory Dimensions 21,22.....................
Selection Procedure 23...........................
Performance Data 24-56..........................
Electrical Data 57-66.............................
Typical Wiring Schematics 67......................
Typical Piping 68................................
Guide Specifications 69-72.......................
50HJQ
Physical Data 73-75.............................
Base Unit Dimensions 76-78......................
Accessory Dimensions 79-83.....................
Selection Procedure 84...........................
Performance Data 85-122.........................
Electrical Data 123-130...........................
Typical Wiring Schematics 131-132.................
Typical Piping 133...............................
Guide Specifications 134-142.....................
50HEQ
Physical Data 143...............................
Base Unit Dimensions 144........................
Accessory Dimensions 145.......................
Selection Procedure 84...........................
Performance Data 146-162........................
Electrical Data 163-166...........................
Typical Wiring Schematics 167.....................
Guide Specifications 168 ---172....................
Accessory Performance Data ---All Models 173-175
Typical Piping and Wiring ---All Models 176-180....
Controls 181-187...............................
Application Data 187-191.......................
Unit sizes 008-016 offer lower utility costs through part-load
operation using 2 stages of cooling.
Quiet and efficient operation is provided by belt-driven indoor
fans (standard on all units over 5 tons). The belt-driven indoor
fan is equipped with variable-pitch pulleys which allow
adjustment within the rpm ranges of the factory-supplied pulleys.
Increased operating efficiency is achieved through
computer-designed coils featuring staggered 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 constructed of galvanized steel and bonderized, and
all exterior panels are coated with a prepainted baked enamel
finish. The paint finish is non-chalking, and is capable of
withstanding ASTM (American Society for Testing and
Materials) B117 500-hour Salt Spray Test. All internal cabinet
panels are primed, permitting longer life and a more attractive
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 outdoor-fan motors and permanently lubricated bearings
provide additional unit dependability.
Patented state-of-the-art Chronotemp™defrost system uses
time and temperature to keep the outdoor coil frost-free for
economical, dependable operation. The Chronotemp defrost
board can be easily configured for defrost cycles every 30, 50, or
90 minutes.
Dependable 4-way valve operation safely and efficiently
accomplishes cycle reversals, defrost, and normal operation.
Easy installation and conversion
All units are shipped in the vertical duct configuration for fit-up
to standard roof curbs. (3 different curb sizes fit unit sizes
003-007, 008-012, and 014,016 respectively.) The contractor 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 packaging protects all
units during shipment and storage.
The units can be easily converted from a vertical to a horizontal
duct configuration by relocating the panels supplied with the unit.
To convert 003-012 units from vertical to horizontal discharge,
simply relocate 2 panels. The same basic unit can be used for a
variety of applications and can be quickly modified at the jobsite.
To convert size 014 and 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 Application Data
section) without requiring internal unit modification (size 014,
016 only).
NOTE: On units using horizontal supply and return, the
accessory barometric 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 control 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.
The non-corrosive sloped condensate drain pan permits either
an external horizontal side condensate drain (outside the roof
curb) or an internal vertical bottom drain (inside the roof curb).
Both options require an external, field-supplied P-trap.
Standard 2-in. throwaway filters are easily accessed through a
removable panel located above the air intake hood. No tools are
required to change unit filters.
All 003-012 units are designed with a single, continuous top
piece to eliminate leaking at the seams or gasketing.
Belt-driven indoor-fan motors allow maximum on-site
flexibility without changing motors or drives.
Field-installed accessory electric heaters are available in a wide
range of capacities. An available single-point wiring kit makes
installation simple.
50TFQ,HJQ.HEQ

3
Low voltage wiring connections are easily made due to the large
terminal board which is located for quick, convenient access.
In addition, color-coded wires permit easy tracing and
diagnostics.
Proven compressor reliability
Design techniques feature computer-programmed balance
between compressor, condenser, and evaporator. Carrier-specified
hermetic compressors are equipped with compressor overcurrent
and overtemperature protection to ensure dependability.
All units have Carrier’s exclusive Acutrol™fixed orifice
metering device which precisely controls refrigerant flow,
preventing slugging and flood-back, while maintaining optimum
unit performance. Refrigerant filter driers are standard.
Standard low ambient cooling operation to 25_F; optional head
pressure control kit available for outdoor ambient conditions to
–20_F.
Integrated economizers and outdoor-air dampers
Available as options or accessories, economizers and manual
outdoor-air dampers introduce outdoor air which mixes with the
conditioned air, improving indoor air quality and often reducing
energy consumption.
During a first stage call for cooling, if the outdoor air temperature
is below the economizer control changeover set point, the
mixed-air sensor modulates the economizer outdoor air damper
open to take advantage of free cooling provided by the outside
air. When second-stage cooling is called for, the compressor is
energized in addition to the economizer. If the outdoor air
temperature is above the changeover set point, the first stage of
compression is activated and the economizer damper stays at
minimum position.
Accessory upgrade kits allow for control by differential dry-bulb
temperature (outdoor vs return), outdoor air enthalpy changeover,
or more precise differential enthalpy control.
Units can be equipped with different economizer options to meet
specific controls applications. The factory-installed or
field-installed EconoMi$er IV and EconoMi$er2 are available.
The EconoMi$er IV is used with the standard rooftop unit
controls and includes an industry standard, stand-alone,
solid-state control. The control can be used with a CO2sensor for
DCV (demand control ventilation) operation. For direct digital
control (DDC) applications, the EconoMi$er2 can be operated
using PremierLink™controls or a third party controller. The
Econo-Mi$er2 includes 4 to 20 mA actuator capability for
demand control ventilation applications.
All economizers incorporate a parallel blade, gear driven damper
system for efficient air mixing and reliable control. In addition,
the standard damper actuator includes a spring return to provide
reliable closure on power loss. The economizers for sizes
004-012 are equipped with up to 100% barometric relief
capability for high outdoor airflow operations. Economizers for
unit sizes 004-012 are available, factory-installed, for vertical
return only. Economizers for unit sizes 014-016 are compatible
for vertical or horizontal return. An optional field-installed
barometric relief package is available for 014 and 016 size units.
In addition, single-stage power exhaust is available as a
field-installed accessory for EconoMi$er IV to help maintain
proper building pressure.
For units without economizer, year-round ventilation is enhanced
by a manual outdoor-air damper. On size 004-012 units, a 25% or
50% manual damper is available as a field-installed accessory.
Unit sizes 014 and 016 are equipped with a manual 25% damper.
Service options
Servicing a rooftop unit has never been easier with the new
factory-installed service options for these rooftop units. These
options include the following:
SHinged access panels are provided for the
filter/indoor-fan motor, compressors, indoor fan, and
control box areas. Quick access to major components is
accomplished by simply unlatching and swinging open
the various panels. Each hinged panel is permanently
mounted to the unit, thereby eliminating the concern of
a dropped or wind-blown panel puncturing delicate
roof materials. The 4 extended access panels are also
equipped with ‘‘tie back’’ retaining devices to hold the
door in the open position while servicing the unit.
SAn external, covered, 115-v Ground Fault Interrupt
(GFI) receptacle is provided as a convenient power
source for drills, lights, refrigerant recovery units, or
other electrical service tools. Simply connect the outlet
to a field-supplied and properly fused branch circuit
power supply.
SAn integral non-fused disconnect switch within the
rooftop unit reduces installation time, labor and
material costs. Safety is assured by an interlock which
prevents access to the control box unless the switch is
in the OFF position. In addition, the externally
mounted handle incorporates power lockout capability
to further protect service personnel.
Carrier PremierLink™controls add reliability,
efficiency, and simplification
The PremierLink direct digital controls can be ordered as a
factory-installed option or as a field-installed accessory. Designed
and manufactured exclusively by Carrier, the controls can be used
to actively monitor and control all modes of operation, as well as
monitor the following diagnostics and features: unit number, zone
temperature, zone set point, zone humidity set point, discharge air
temperatures, fan status, stages of heating, stages of cooling,
damper position, outdoor-air temperature, outdoor humidity
level, filter status, fire shutdown status, IAQ (indoor air quality)
set point, enthalpy status, differential enthalpy status, heat/cool
lockout, cfm set point, pre-occupancy purge, economizer controls
and early morning warm-up.
This controller has a 38.4K baud communications capability and
is compatible with ComfortLink™Controls, CCN (Carrier
Comfort Network®) and ComfortVIEW™Software. The
Scrolling Marquee and Navigator are optional tools that can be
used for programming and monitoring the unit for optimal
performance. The addition of the Carrier CO2sensor in the
conditioned space provides ASHRAE (American Society of
Heating, Refrigeration, and Air Conditioning Engineers) 62-99
compliance and Demand Control Ventilation.
The PremierLink™peer-to-peer, internet ready, communicating
control is designed specifically for Constant Volume and Variable
Volume and Temperature applications. This comprehensive
controls system allows all Carrier 3 to 25 ton rooftops to be daisy
chained together on a roof to create a fully functional HVAC
(heating, ventilation, and air conditioning) automation system.
Indoor-air quality begins with Carrier rooftops
Sloped condensate pans minimize biological growth in rooftop
units in accordance with ASHRAE Standard 62. Two-inch filters
with optional dirty filter indicator switch provide for greater
particle reduction in the return air. The face-split evaporator coils
improve the dehumidification capability of standard units,
maximize building humidity control.
Optional proportional reacting CO2sensor is available with the
EconoMi$er IV outdoor--air damper option/accessory to aid the
IAQ benefits.
50TFQ,HJQ.HEQ

4
Energy$Recycler — the IAQ solution for today’s
“tight” buildings
The 62AQ Energy Recycler can be field--installed with size
003--012 units. Indoor-air quality (IAQ) generally refers to the
level of pollutants inside a building. These pollutants include
cigarette smoke, carbon dioxide exhaled by occupants, radon gas,
car exhaust, paint fumes, and odors.
Concern over increased indoor air pollutants has been spurred by
several issues:
1. Changes in new building construction methods and
retrofit of older buildings have reduced air infiltration rates
2. Synthetic materials release airborne particles, odors, and
chemicals; and
3. HVAC (heating, ventilation, and air conditioning) systems
that bring in minimal fresh air.
In 1989, IAQ concerns caused ASHRAE to recommend
increased ventilation for all public buildings. Simply introducing
fresh air into a building, however, is not always practical or cost
effective. Additional ventilation can overload HVAC systems and
increase energy costs.
Carrier’s 62AQ Energy$Recycler unit solves this dilemma by
providing increased fresh air while keeping increased costs to a
minimum. In addition, the Energy$Recycler helps reduce
humidity levels, which helps to prevent deterioration of building
materials and retards the growth of mold and mildew.
The 62AQ Energy$Recycler unit provides the best solution to
retaining the energy-conserving benefits of today’s tighter
building construction while improving indoor-air quality.
MODEL NUMBER NOMENCLATURE
50TFQ004P- -501AA
TFQ – Standard Efficiency Heat Pump
50 – Electric Cooling
Design Series
0– Original
Factory Installed Option Code*
Nominal Capacity
004 – 3 Tons 008 – 7 1/2 Tons
005 – 4 Tons 012 – 10 Tons
006 – 5 Tons
007 – 6 Tons
Factory-Installed Communicating Control
-– Standard
N– Novar ETM3051 Control
P– Carrier PremierLink™ Rooftop Controller
For more information about Novar Control option, check
with your sales representative.
V-Ph-Hz
1– 575-3-60
3– 208/230-1-60†
5– 208/230-3-60
6– 460-3-60
Coil Protection Options
-– Copper Tube/Aluminum Fin (Both Outdoor and Indoor Coils)
B– Copper Tube/Copper Fin (Both Outdoor and Indoor Coils)
C– Copper Tube/Copper Fin (Outdoor Coil Only)
E– E-Coat Copper Tube/Aluminum Fin (Both Outdoor and
Indoor Coils)
F– E-Coat Copper Tube/Aluminum Fin
G– E-Coat Copper Tube/Copper Fin (Outdoor Coil Only)
V– Pre-coated Aluminum Tube/Copper Fin (Outdoor Coil Only)
Packaging
1– Domestic
3– Export
Indoor Fan Motor
-– Standard Fan Motor
A– Alternate Fan Motor/Drive
M– High-Static Fan Motor
*Refer to 50TFQ Price Pages or contact your local Carrier representative for
50TFQ code table.
†Sin
g
le
p
hase is onl
y
available on 5-ton and smaller units.
Quality Assurance
Certified to ISO 9001:2000
50TFQ004-012
50TFQ,HJQ.HEQ

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50HEQ003--006

6
HJQ – High Efficiency Heat Pump
50– Electric Cooling
1– Revision Number
FIOP Code*
Nominal Capacity
004 – 3 Tons
005 – 4 Tons
006 – 5 Tons
007 – 6 Tons
008 – 7 1/2 Tons
009 – 8 1/2 Tons
012 – 10 Tons V-Ph-Hz
3– 208/230-1-60
5– 208/230-3-60
6– 460-3-60
50 HJQ 004 P - - 3 1 1 A A
Packaging
1– Domestic Unit
3– Export
Controls and Sensors
–– None
G– Hinged Access Panels
H– Hinged Panels & PremierLink
N– Novar ETM3051 Control
P– PremierLink DDC Control
R– Novar ETM3051 & Hinged Panels
Indoor Motor Options
–– Standard Motor and Drive
M– High Static Motor
Coil Options
–– Aluminum Fin/Copper Tube (Indoor and Outdoor Coils)
B– Copper Fin/Copper Tube (Indoor and Outdoor Coils)
C– Copper Fin/Copper Tube (Outdoor Coil) and
Aluminum Fin/Copper Tube (Indoor Coil)
E– E-Coated Aluminum Fin/Copper Tube (Indoor and
Outdoor Coils)
F– E-Coated Aluminum Fin/Copper Tube (Outdoor Coil)
and Aluminum Fin/Copper Tube (Indoor Coil)
G– E-Coated Copper Fin/Copper Tube (Outdoor Coil) and
Aluminum Fin/Copper Tube (Indoor Coil)
V– Pre-Coated Aluminum Fin/Copper Tube (Outdoor Coil)
and Aluninum Fin/Copper Tube (Indoor Coil)
*Refer to 50HJQ Price Pages for FIOP (factory-installed option)
code table.
Quality Assurance
Certified to ISO 9001:2000
50HJQ004-012
50 HJQ 016 - - C 6 2 1 YA
HJQ – High Efficiency Heat Pump
Fan Drive Motor
-– Standard Motor
50 – Electric Cooling
Design Series
2– Gear Driven EconoMi$er IV
Design Change
Factory Installed Option Code*
Normal Capacity
014 – 121/2 Tons
016 – 15Tons
Service/Control Options
-– Standard Controls
G– Service Option with 6 Hinged Access Panels,
Non-Fused Disconnect, and Non-Powered
115-v GFI Convenience Outlet
J– HingedAccess Panel
Voltage Designation
1– 575-3-60
5 – 208/230-3-60
6– 460-3-60
Coil Protection Options
-– Al/Cu Outdoor & Indoor Coils
B– Cu/Cu Outdoor & Indoor Coils
C – Cu/Cu Outdoor & Al/Cu Indoor Coils
F– E-Coated Al/Cu Outdoor
G– E-Coated Cu/Cu Outdoor
V– Pre-coated Outdoor Coil
Packaging
1– Domestic
3– Export
*Refer to 50HJQ price pages or contact your local Carrier representa-
tive for 50HJQ code table.
Quality Assurance
Certified to ISO 9001:2000
50HJQ014,016
50TFQ,HJQ.HEQ50TFQ,HJQ.HEQ

7
ARI* CAPACITY RATINGS
ARI* CAPACITY RATINGS — 50TFQ004-006
COOLING HEATING
(High Temp)
S
O
U
N
D
UNIT
5
0
T
F
Q
NOMINAL
T
O
N
S
N
e
t
C
a
p
a
c
i
t
SEER†
C
a
p
a
c
i
t
S
O
U
N
D
RATING
5
0
T
F
Q
T
O
N
S
Net Capacity
(Btuh) Belt
Drive
Direct
Drive
Capacity
(Btuh) HSPF
R
A
T
I
N
G
(decibels)
004 334,600 10.20 10.0 34,400 6.7 84
005 446,500 10.00 9.7 46,500 6.9 80
006 557,000 10.00 9.9 57,000 7.5 82
ARI* CAPACITY RATINGS — 50TFQ007-012
U
N
I
T
N
O
M
I
N
A
L
COOLING HEATING
(High)
HEATING
(Low) SOUND
UNIT
50TFQ
NOMINAL
TONS Net
Capacity
(Btuh)
EER Capacity
(Btuh) COP Capacity (Btuh) COP
IPLV**
S
O
U
N
D
RATING
(decibels)
007 670,000 9.0 72,000 3.2 42,000 1.8 —82
008 71/286,000 9.0 78,000 3.0 39,000 1.5 9.3 86
009 81/296,000 8.9 96,000 3.0 55,000 2.0 8.8 86
012 10 112,000 9.0 105,000 3.1 59,000 1.7 9.0 84
*Air Conditioning and Refrigeration Institute.
**The IPLV applies only to 2-stage cooling heat pump units.
†Applies only to units with capacity of 60,000 Btuh or less.
NOTES:
1. Rated in accordance with ARI Standards 210/240-95 and 270-95.
2. Ratings are net values, reflecting the effects of circulating fan heat.
3. ALL the 50HJQ and 50TFQ004,005 and 006 units are in compliance
with ASHRAE 90.1 2001 Energy Standard for minimum SEER and EER
requirements. Refer to state and local codes or visit the following
website: http://bcap---energy.org to determine if compliance with this
standard pertains to a given geographical area of the United States.
4. Ratings are based on:
Cooling Standard: 80_F db, 67 F wb indoor entering-air temperature and 95_Fdb
air entering outdoor unit.
IPLV Standard: 80_F db, 67_F wb indoor entering-air temperature and 80_Fdb
outdoor entering-air temperature.
High-Temp Heating Standard: 70_F db indoor entering-air temperature and 47_F
db, 43_F wb outdoor entering-air temperature.
Low-Temp Heating Standard: 70_F db indoor entering-air temperature and 17_F
db, 15_F wb outdoor entering-air temperature.
LEGEND
COP — Coefficient of Performance
db — dry bulb
EER — Energy Efficiency Ratio
HSPF — Heating Seasonal Performance Factor
IPLV — Integrated Part-Load Values
SEER — Seasonal Energy Efficiency Ratio
wb — wet bulb
50TFQ,HJQ.HEQ

8
ARI* CAPACITY RATINGS (CONT)
ARI* CAPACITY RATINGS — 50HJQ004-006
U
N
I
T
N
O
M
I
N
A
L
COOLING HEATING (High Temp) SOUND
U
N
I
T
50HJQ
N
O
M
I
N
A
L
TONS Net Cap.
(Btuh) SEER† Cap. (Btuh) HSPF†
S
O
U
N
D
RATING
(decibels)
004 335,600 13.1 34,800 7.7 76
005 445,000 13.0 45,000 7.8 76
006 558,000 13.0 55,000 7.7 80
ARI* CAPACITY RATINGS — 50HJQ007-012
UNIT NOMINAL COOLING HEATING
(High)
HEATING
(Low) SOUND
R
A
T
I
N
G
I
P
L
V
U
N
I
T
50HJQ
N
O
M
I
N
A
L
TONS Net Cap.
(Btuh) EER Cap. (Btuh) COP Cap. (Btuh) COP
R
A
T
I
N
G
(decibels)
I
P
L
V
007 671,000 10.5 69,000 3.4 37,000 2.2 80 —
008 71/288,000 10.3 85,000 3.3 48,000 2.2 82 10.5
009 81/298,000 10.3 96,000 3.3 52,000 2.2 110 12.7 (100%)
10.4 (50%)
012 10 116,000 10.3 114,000 3.3 64,000 2.2 84 10.4
*Air Conditioning and Refrigeration Institute.
†Applies only to units with capacity of 60,000 Btuh or less.
NOTES:
1. Rated in accordance with ARI Standards 210/240-94 and 270-95.
2. Ratings are net values, reflecting the effects of circulating fan heat.
3. ALL the 50HJQ and 50TFQ004,005 and 006 units are in compliance
with ASHRAE 90.1 2001 Energy Standard for minimum SEER and EER
requirements. Refer to state and local codes or visit the following
website: http://bcap---energy.org to determine if compliance with this
standard pertains to a given geographical area of the United States.
4. Ratings are based on:
Cooling Standard: 80 F db, 67 F wb indoor entering-air temperature and 95 F db
air entering outdoor unit.
IPLV Standard: 80 F db, 67 F wb indoor entering-air temperature and 80 F db
outdoor entering-air temperature.
High-Temp Heating Standard: 70 F db indoor entering-air temperature and 47 F
db, 43 F wb outdoor entering-air temperature.
Low-Temp Heating Standard: 70 F db indoor entering-air temperature and 17 F
db, 15 F wb outdoor entering-air temperature.
LEGEND
COP — Coefficient of Performance
Cap — Net Capacity (Btuh)
EER — Energy Efficiency Ratio
HSPF — Heating Seasonal Performance Factor
IPLV — Integrated Part-Load Values
SEER — Seasonal Energy Efficiency Ratio
EER —Energy Efficiency Ratio
ARI* CAPACITY RATINGS —50HJQ014,016 UNITS
COOLING HEATING-HIGH TEMP HEATING-LOW TEMP
S
O
U
N
D
UNIT
50HJQ To ta l
kW
Net
Capacity
(Btuh)
Cfm IPLV EER
To ta l
Capacity
(Btuh)
To ta l
kW COP
To ta l
Capacity
(Btuh)
To ta l
kW COP
S
O
U
N
D
RATING
(decibels)
014 14.3 140,000 4500 12.4 9.8 136,000 12.4 3.2 72,000 10.0 2.1 87
016 18.5 172,000 5200 9.7 9.3 172,000 15.3 3.3 90,000 12.5 2.2 88
*Air-Conditioning and Refrigeration Institute.
NOTE: 50HJQ units are rated in accordance with ARI Standard 340-93.
Cooling ratings are net values, reflecting the effects of circulating fan
heat. Ratings are based on: ESP: –.35 in. wg
Cooling Standard: 80_F db, 67 wb indoor coil entering-air temperature
and 95 F outdoor entering-air temperature.
High-Temp Heating Standard: 70_F db indoor coil entering-air
temperature and 47_F db, 43 F wb outdoor coil entering-air
temperature.
Low-Temp Heating Standard:70_F db indoor coil entering-air
temperature and 17_F db, 15 F wb outdoor coil entering-air
temperature.
IPLV Standard: 80_F db, 67_F wb indoor entering-air temperature and
80_F db outdoor entering-air temperature.
ALL the 50HJQ and 50TFQ004,005 and 006 units are in compliance with
ASHRAE 90.1 2001 Energy Standard for minimum SEER and EER
requirements. Refer to state and local codes or visit the following
website: http://bcap---energy.org to determine if compliance with this
standard pertains to a given geographical area of the United States.
LEGEND
COP — Coefficient of Performance
db — Dry Bulb
EER — Energy Efficiency Ratio
ESP — External Static Pressure
IPLV — Integrated Part-Load Value
wb — Wet Bulb
50TFQ,HJQ.HEQ

9
ARI* CAPACITY RATINGS (CONT)
ARI* CAPACITY RATINGS — 50HEQ003-006
UNIT NOMINAL COOLING HEATING
(High)
HEATING
(Low) SOUND
R
A
T
I
N
G
U
N
I
T
50HEQ
N
O
M
I
N
A
L
TONS Net Cap.
(Btuh) EER SEER Cap. (Btuh) COP HSPF Cap. (Btuh) COP
R
A
TING
(decibels)
003 224,000 11.90 14.00 23,600 3.6 8.1 13,400 2.3 76
004 337,000 11.90 14.00 36,000 3.6 8.1 19,000 2.2 76
005 446,000 11.70 14.00 46,000 3.6 8.0 24,800 2.2 76
006 558,500 11.60 14.00 58,000 3.7 8.0 32,000 2.4 80
*Air Conditioning and Refrigeration Institute.
†Applies only to units with capacity of 60,000 Btuh or less.
NOTES:
1. Rated in accordance with ARI Standards 210/240-94 and 270-95.
2. Ratings are net values, reflecting the effects of circulating fan heat.
3. ALL the 50HJQ and 50TFQ004,005 and 006 units are in compliance
with ASHRAE 90.1 2001 Energy Standard for minimum SEER and EER
requirements. Refer to state and local codes or visit the following
website: http://bcap---energy.org to determine if compliance with this
standard pertains to a given geographical area of the United States.
4. Ratings are based on:
Cooling Standard: 80_F db, 67_F wb indoor entering-air temperature and 95_F
db air entering outdoor unit.
IPLV Standard: 80_F db, 67_F wb indoor entering-air temperature and 80_Fdb
outdoor entering-air temperature.
High-Temp Heating Standard: 70_F db indoor entering-air temperature and 47_F
db, 43 F wb outdoor entering-air temperature.
Low-Temp Heating Standard: 70_F db indoor entering-air temperature and 17_F
db, 15_F wb outdoor entering-air temperature.
LEGEND
COP — Coefficient of Performance
Cap — Net Capacity (Btuh)
EER — Energy Efficiency Ratio
HSPF — Heating Seasonal Performance Factor
IPLV — Integrated Part-Load Values
SEER — Seasonal Energy Efficiency Ratio
EER — Energy Efficiency Ratio
50TFQ,HJQ.HEQ

10
OPTIONS AND ACCESSORIES
50TFQ004-012
ITEM OPTION* ACCESSORY†
100% Open Two-Position Damper X
25% Open Two-Position Damper X
Alternate Motors and Drives X X
Convenience Outlet (Load Side) X
Copper Fins Indoor and Outdoor Coil X
Copper Fins Outdoor Coil X
E-Coat Outdoor Coil (Aluminum) X
E-Coat Outdoor Coil (Copper) X
EconoMi$er IV with Controller X X
EconoMi$er2 (without Controller) X X
Electric Heat X
Electronic Programmable Thermostat X
Emergency Heat Package X
Energy$Recycler Mounting Kit X
Energy$Recycler Supply Air Blower X
Energy$Recycler Transformer for 460 v X
Energy$Recycler Transformer for 575 v X
Energy$Recycler Unit X
Enthalpy or Differential Enthalpy Sensor X
Fan/Filter Status X
High-Static Motor and Drive X
Hinged Panel Kit for Economizer X
Indoor Air Quality (CO2) Sensor X
Manual Outdoor-Air Damper (50% or 100%) X
Motormaster®I, II, IV Head Pressure Control (Low Ambient Kit) X
Novar Control X
Outdoor Air Enthalpy Sensor X
Outdoor Air/Return Air Temperature Sensor X
Outdoor Coil Grille X
Outdoor Coil Hail Guard Assembly X
Power Exhaust Transformer for 575 v X
Power Exhaust with Barometric Relief X
Pre-coat Aluminum Fins on Outdoor Coil X
PremierLink™DDC Communicating Control X X
Return Air Enthalpy Sensor X
Return Air Temperature Sensor X
Roof Curbs (Vertical and Horizontal Discharge) X
Thermostats and Subbases X
Thru-the-Bottom Utility Connections X
Time Guard II Control Circuit (Compressor Cycle Delay) X
Unit-Mounted Non-Fused Disconnect X
*Factory-installed.
†Field-installed.
NOTES:
Refer to unit price pages or contact your local representative for accessory and option package information.
Some options may increase product lead times.
50TFQ,HJQ.HEQ

11
OPTIONS AND ACCESSORIES (CONT)
50HJQ004-012, 50HEQ003--006
ITEM OPTION* ACCESSORY†
100% Open Two-Position Damper X
25% Open Two-Position Damper X
Alternate Motors and Drives X X
Convenience Outlet (Load Side) X
Copper Fins Indoor and Outdoor Coil X
Copper Fins Outdoor Coil X
E-Coat Outdoor Coil (Aluminum) X
E-Coat Outdoor Coil (Copper) X
EconoMi$er IV with Controller X X
EconoMi$er2 (without Controller) X X
Electric Heat X
Electronic Programmable Thermostat X
Emergency Heat Package X
Energy$Recycler Mounting Kit X
Energy$Recycler Supply Air Blower X
Energy$Recycler Transformer for 460 v X
Energy$Recycler Transformer for 575 v X
Energy$Recycler Unit X
Fan/Filter Status X
Hinged Access Panels X
Hinged Panel Kit for Economizer X
Indoor Air Quality (CO2) Sensor X
Manual Outdoor-Air Damper X
Motormaster®I, II, IV Head Pressure Control (Low Ambient Kit) X
Novar Control X
Outdoor Air Enthalpy Sensor X
Outdoor Coil Grille X
Outdoor Coil Hail Guard Assembly X
Outdoor Air/Return Air Temperature Sensor X
Power Exhaust Transformer for 575 v X
Power Exhaust with Barometric Relief X
Pre-coat Aluminum Fins on Outdoor Coil X
PremierLink™DDC Communicating Control X X
Return Air Enthalpy Sensor X
Return Air Temperature Sensor X
Roof Curbs (Vertical and Horizontal Discharge) X
Thermostats and Subbases X
Thru-the-Bottom Utility Connections X
Time Guard II Control Circuit (Compressor Cycle Delay) X
Unit-Mounted Non-Fused Disconnect X
*Factory-installed.
†Field-installed.
NOTES:
Refer to unit price pages or contact your local representative for accessory and option package information.
Some options may increase product lead times.
50TFQ,HJQ.HEQ

12
50HJQ014,016
ITEM OPTION* ACCESSORY†
25% Open Two-Position Damper X
Alternate Motors and Drives X X
Barometric Relief Damper (Not for use with horizontal roof curb) X
Convenience Outlet (Load Side) X
Copper Fins Indoor and Outdoor Coil X
Copper Fins Outdoor Coil X
E-Coat Outdoor Coil (Aluminum) X
E-Coat Outdoor Coil (Copper) X
EconoMi$er IV with Controller X X
EconoMi$er2 (without Controller) X
Electric Heat X
Electronic Programmable Thermostat X
Emergency Heat Package X
Fan/Filter Status X
Hinged Access Panels X
Horizontal Adapter Curb X
Hinged Panel Kit for Economizer X
Hydronic Glycol Coil X
Indoor Air Quality (CO2) Sensor X
Manual Outdoor-Air Damper X
Motormaster®V Head Pressure Control (Low Ambient Kit) X
Outdoor Air Enthalpy Sensor X
Power Exhaust without Barometric Relief X
Pre-coat Aluminum Fins on Outdoor Coil X
PremierLink™DDC Communicating Control X** X
Return Air Enthalpy Sensor X
Return Air Temperature Sensor X
Roof Curbs (Vertical and Horizontal Discharge) X
Thermostats and Subbases X
Time Guard II Control Circuit (Compressor Cycle Delay) X
Unit-Mounted Non-Fused Disconnect X**
Winter Start Time Delay X
*Factory-installed.
†Field-installed.
**Special order only.
NOTES:
Refer to unit price pages or contact your local representative for accessory and option package information.
Some options may increase product lead times.
50TFQ,HJQ.HEQ

13
OPTIONS AND ACCESSORIES (CONT)
See Accessory Performance Data for accessory details.
Carrier PremierLink™controls are available as a
factory-installed option or as a field-installed accessory. The
controls can be used to actively monitor and control all modes of
operations.
Roof curbs (horizontal and vertical) permit installation and
securing of ductwork to curb prior to mounting unit on the curb.
Both 14-in. and 24-in. roof curbs are available as field-installed
accessories.
EconoMi$er IV is available as a factory-installed option in
vertical supply/return configuration only for unit sizes 003-012.
Vertical or horizontal configuration is available for unit sizes 014
and 016. (EconoMi$er IV is available as a field-installed
accessory for horizontal and/or vertical supply return
configurations.) The EconoMi$er IV is provided with an industry
standard, stand--alone, solid-state controller that is easy to
configure and troubleshoot. The EconoMi$er IV is compatible
with non-DDC applications. EconoMi$er IV is equipped with a
barometric relief damper capable of relieving up to 100% return
air. Dry bulb outdoor-air temperature sensor is provided as
standard. The return air sensor, indoor enthalpy sensor, and
outdoor enthalpy sensor are provided as field-installed accessories
to provide enthalpy control, differential enthalpy control, and
differential dry bulb temperature control.
EconoMi$er2 is available as a factory-installed option in vertical
supply/return configuration only. (EconoMi$er2 is available as a
field-installed accessory for horizontal and/or vertical supply
return configurations.) The EconoMi$er2 is provided without a
controller for use with factory-installed PremierLink™controls or
field-installed third-party controls. EconoMi$er2 is equipped with
a barometric relief damper capable of relieving up to 100% return
air. Dry bulb outdoor-air temperature sensor is provided as
standard. The enthalpy, differential temperature (adjustable), and
differential enthalpy control are provided as field-installed
accessories. The EconoMi$er2 is capable of control from a 4 to
20 mA signal through optional 4 to 20 mA design without
microprocessor control (required for PremierLink or third party
control interface).
Manual outdoor-air damper accessory can be preset to admit
up to 50% outdoor air for year round ventilation.
Two-position damper package is available as an accessory. Both
25% or 100% outdoor air dampers are available.
Head pressure control (Motormaster) accessory package
maintains condensing temperature between 90_Fand110_Fat
outdoor ambient temperatures down to –20_F by condenser-fan
speed modulation or condenser-fan cycling and wind baffles.
Electric resistance heaters are one stage per heater module.
Single point kits are required, as specified, to meet NEC and UL
requirements.
Unit-mounted, non-fused disconnect switch provides unit
power shutoff. The switch is accessible from outside the unit and
provides power off lockout capability and is available as
factory-installed option.
Convenience outlet is factory-installed and internally mounted
with easily accessible 115-v female receptacle for temporary use
of service tools. The device connects to the load--side of the
disconnect. For a line--side convenience outlet, contact your local
Carrier representative.
Compressor cycle delay (Time Guard II) prevents unit from
restarting for minimum of 5 minutes after shutdown.
Thru-the-bottom utility connectors permit electrical
connections to be brought to the unit through the basepan.
Connectors are a field-installed accessory.
Fan/filter status switch accessory provides status of indoor
(evaporator) fan (ON/ OFF) or filter (CLEAN/DIRTY).
62AQ Energy$Recycler heat pump unit recovers energy from
building exhaust air and pre-conditions ventilation air to allow
higher ventilation requirements and minimizing energy cost.
Energy$Recycler unit is a field-installed accessory.
Energy recovery ventilator is a wheel device that recovers
energy from the building exhaust air and preconditions
ventilation air. The 62M is a field--installed accessory.
Power exhaust accessory will provide system exhaust of up to
100% of return air (vertical only). The power exhaust is a
field-installed accessory (separate vertical and horizontal design).
Ultra-violet germicidal lamps eliminate odor causing mold and
fungus that may develop in the wet area of the evaporator section
of the unit. The high output, low temperature germicidal lamps
are field installed in the evaporator section of the unit, aimed at
the evaporator coil and condensate pan.
Hinged panel option provides hinged access panels for the filter,
compressor, evaporator fan, and control box areas. Filter hinged
panels permit toolless entry for changing filters. Each hinged
panel is permanently attached to the rooftop unit and is a
factory-installed option.
Emergency heat control package accessory activates auxiliary
heat when necessary if mechanical heating is locked out.
50TFQ,HJQ.HEQ

14
OPTIONS AND ACCESSORIES (CONT)
EXHAUST
AIR
CONDENSER-FAN
DISCHARGE AIR
FRESH AIR
INLET
MOUNTING
KIT
FILTER
ACCESS
OUTDOOR-AIR
INLET
RETURN AIR
BAFFLE
ROOF CURB
RETURN AIR
SUPPLY AIR
OUTDOOR AIRFLOW
INDOOR AIRFLOW
ACCESSORY SUPPORT RAIL
C06059
ACCESSORY ENERGY $RECYCLER (3 TO 12---1/2 TON UNITS ONLY)
TR1
24 Vac
COM
TR
24
Vac
HOT
12
34
5
EF EF1
+_
P1
T1
P
T
N
EXH
2V 10V
EXH
Set
Set
2V 10V
2V 10V
DCV
DCV
Free
Cool
BC
AD
SO+
SR+
SR
SO
AQ1
AQ
DCV
Min
Pos
Open
Max
N1
C06038
ECONOMI$ER IV CONTROL
ECONOMI$ER IV
CONTROLLER
OUTSIDE AIR
TEMPERATURE SENSOR
LOW AMBIENT
SENSOR
A
CTUATOR
WIRING
HARNESS
C06021
GEAR---DRIVEN ECONOMI$ER IV COMPONENT PARTS
50TFQ,HJQ.HEQ

15
OPTIONS AND ACCESSORIES (CONT)
C06060
UNIT---MOUNTED DISCONNECT (Sizes 004 ---012)
C06062
CONVENIENCE OUTLET C06061
UNIT---MOUNTED DISCONNECT (Sizes 014, 016)
50TFQ,HJQ.HEQ

16
C06063
CONTROL BOX HINGED PANEL OPTION,
50HJQ004 ---007 UNITS SHOWN
C06064
CONTROL BOX HINGED PANEL OPTION,
50HJQ008 ---012 UNITS SHOWN
NOTE: Hin
g
ed access
p
anels are not available on 50TFQ units.
C06065
COMPRESSOR HINGED PANEL OPTION,
50HJQ008 ---012 UNITS SHOWN
C06066
COMPRESSOR HINGED PANEL OPTION,
50HJQ004 ---006 UNITS SHOWN
NOTE: Hinged access panels are not available on 50TFQ units.
C06067
EVAPORATOR---FAN HINGED PANEL OPTION
C06068
FILTER HINGED PANEL OPTION
50TFQ,HJQ.HEQ

17
PHYSICAL DATA
50TFQ004--007
UNIT SIZE 50TFQ 004 005 006 007
NOMINAL CAPACITY (tons) 3456
OPERATING WEIGHT (lb)
Unit 500 520 550 590
Economizer
EconoMi$er IV 50 50 50 50
Roof Curb* 115 115 115 115
COMPRESSOR Hermetic
Quantity 1111
Oil (oz) 45 54 50 54
REFRIGERANT TYPE R-22
Operating Charge (lb-oz)
Circuit 1 5-1 6-0 8-0 11-2
Circuit 2 ————
OUTDOOR COIL Enhanced Copper Tubes, Aluminum Lanced Fins, Acutrol™Metering Device
Rows...Fins/in. 1...17 1...17 2...17 2...17
To t a l F a ce A r e a ( sq f t ) 10.31 14.58 12.25 16.53
OUTDOOR FAN Propeller Type
Nominal Cfm 4000 4000 4000 4000
Quantity...Diameter (in.) 1...22.0 1...22.0 1...22.0 1...22.0
Motor Hp...Rpm 1/4...1100 1/4...1100 1/4...1100 1/4...1100
Watts Input (Total) 325 325 325 325
INDOOR COIL Enhanced Copper Tubes, Aluminum Double-Wavy Fins, Acutrol Metering Device
Rows...Fins/in. 2...15 2...15 3...15 3...15
To t a l F a ce A r e a ( sq f t ) 4.2 4.2 5.5 5.5
INDOOR FAN Centrifugal Type
Quantity...Size (in.) Std 1...10 x 10 1...10 x 10 1...11 x 10 1...10 x 10
Alt 1...10 x 10 1...10 x 10 1...10 x 10 —
High-Static 1...10 x 10 1...10 x 10 1...10 x 10 1...10 x 10
Ty p e D r i v e S t d Direct Direct Direct Belt
Alt Belt Belt Belt —
High-Static Belt Belt Belt Belt
Nominal Cfm 1200 1600 2000 2400
Maximum Continuous Bhp Std .34 .75 1.20 2.40
Alt 1.00 1.00 1.30/2.40† —
High-Static 2.40 2.40 2.90 2.90
Motor Frame Size Std 48 48 48 56
Alt 48 48 56 —
High-Static 56 56 56 56
Nominal Rpm High/Low Std 860/800 1075/970 1075/970 —
Alt 1620 1620 1725 —
High-Static 1725 1725 1725 1725
Fan Rpm Range Std ———1070-1460
Alt 760-1000 770-1175 878-1192 —
High-Static 1075-1455 1075-1455 1300-1685 1300-1685
Motor Bearing Type Ball Ball Ball Ball
Maximum Allowable Rpm 2100 2100 2100 2100
Motor Pulley Pitch Diameter Min/Max (in.) Std ———2.8/3.8
Alt 1.9/2.9 1.9/2.9 2.4/3.4 —
High-Static 2.8/3.8 2.8/3.8 3.4/4.4 3.4/4.4
Nominal Motor Shaft Diameter (in.) Std 1/21/21/25/8
Alt 1/21/25/8—
High-Static 5/85/85/85/8
Fan Pulley Pitch Diameter (in.) Std ———4.5
Alt 4.5 4.0 4.5 —
High-Static 4.5 4.5 4.5 4.5
Belt, Quantity...Type...Length (in.) Std ———1...A...40
Alt 1...A...34 1...A...34 1...A...39 —
High-Static 1...A...39 1...A...39 1...A...40 1...A...40
Pulley Center Line Distance (in.) Std ———14.7-15.5
Alt 10.0-12.4 10.0-12.4 14.7-15.5 —
High-Static 10.0-12.4 10.0-12.4 14.7-15.5 14.7-15.5
Speed Change per Full Turn of
Movable Pulley Flange (rpm) Std ———80
Alt 48 70 80 —
High-Static 65 65 60 60
Movable Pulley Maximum Full Turns
From Closed Position Std — — — 5
Alt 5 5 6 —
High-Static 6655
Factory Setting Std — — — 3
Alt 3 3 3 —
High-Static 31/231/231/231/2
Factory Speed Setting (rpm) Std ———1225
Alt 856 932 1035 —
High-Static 1233 1233 1416 1416
Fan Shaft Diameter at Pulley (in.) 5/85/85/85/8
HIGH-PRESSURE SWITCH (psig)
Standard Compressor Internal Relief (Differential) 450 ±50
Cutout 428
Reset (Auto.) 320
LOSS-OF-CHARGE SWITCH (psig)
Cutout 7±3
Reset (Auto.) 22 ±7
FREEZE-PROTECTION THERMOSTAT (F)
Opens 30 ±5
Closes 45 ±5
OUTDOOR-AIR INLET SCREENS Cleanable. Quantity and size depend on options selected.
RETURN-AIR FILTERS Throwaway
Quantity...Size (in.) 2...16 x 25 x 2
LEGEND
Bhp --- B r a k e H o r s e p o w e r
*Weight of 14-in. roof curb.
†Single phase/three phase.
NOTE: The 50TFQ units have a loss-of-charge switch located in the liquid line.
50TFQ

18
PHYSICAL DATA
50TFQ008--012
UNIT SIZE 50TFQ 008 012
NOMINAL CAPACITY (tons) 71/210
OPERATING WEIGHT (lb)
Unit 940 1015
Economizer
EconoMi$er IV 75 75
Roof Curb* 143 143
COMPRESSOR (Hermetic) Reciprocating Scroll
Quantity 2 2
Oil (oz) 45 ea 54 ea
REFRIGERANT TYPE R-22
Operating Charge (lb-oz)
Circuit 1 5-14 7-14
Circuit 2 5-13 8- 3
O
U
T
D
O
O
R
C
O
I
L
Enhanced Copper Tubes, Aluminum Lanced Fins, Acutrol™
Metering Device
OUTDOOR COIL Metering Device
Rows...Fins/in. 1...17 2...17
To t a l F a ce A r e a ( sq f t ) 20.50 18.30
OUTDOOR FAN Propeller Type
Nominal Cfm 6500 6500
Quantity...Diameter (in.) 2...22 2...22
Motor Hp...Rpm 1/4...1100 1/4...1100
Watts Input (Total) 500 500
I
N
D
O
O
R
C
O
I
L
Enhanced Copper Tubes, Aluminum Double-Wavy Fins, Acutrol
INDOOR COIL Metering Device
Rows...Fins/in. 3...15 3...15
To t a l F a ce A r e a ( sq f t ) 8.0 11.1
INDOOR FAN Centrifugal Type
Quantity...Size (in.) Std 1...15 x 15 1...15 x 15
Alt 1...15 x 15 1...15 x 15
High-Static 1...15 x 15 1...15 x 15
Ty p e D r i v e Std Belt Belt
Alt Belt Belt
High-Static Belt Belt
Nominal Cfm 3000 4000
Maximum Continuous Bhp Std 2.40 2.40
Alt 2.40 2.90
High-Static 3.70 5.25
Motor Frame Size Std 56 56
Alt 56 56
High-Static 56 56
Nominal Rpm Std — —
Alt — —
High-Static 1725 1725
Fan Rpm Range Std 590- 840 685- 935
Alt 685- 935 835-1085
High-Static 860-1080 830-1130
Motor Bearing Type Ball Ball
Maximum Allowable Rpm 2100 2100
Motor Pulley Pitch Diameter Min/Max (in.) Std 2.4/3.4 2.8/3.8
Alt 2.8/3.8 3.4/4.4
High-Static 4.0/5.0 2.8/3.8
Nominal Motor Shaft Diameter (in.) Std 5/85/8
Alt 5/87/8
High-Static 7/87/8
Fan Pulley Pitch Diameter (in.) Std 7.0 7.0
Alt 7.0 7.0
High-Static 8.0 5.8
Belt, Quantity...Type...Length (in.) Std 1...A...53 1...A...49
Alt 1...A...49 1...A...51
High-Static 1...A...65 1...BX...48
Pulley Center Line Distance (in.) Std 16.75-19.25 15.85-17.50
Alt 16.75-19.25 15.85-17.50
High-Static 16.75-19.25 15.85-17.50
Speed Change per Full Turn o
f
Std 50 50
S
p
e
e
d
C
h
a
n
g
e
p
e
r
F
u
l
l
T
u
r
n
o
f
Moveable Pulley Flange (rpm) Alt 50 50
M
o
v
e
a
b
l
e
P
u
l
l
e
y
F
l
a
n
g
e
(
r
p
m
)
High-Static 60 60
Moveable Pulley Maximum Full Turns Std 5 5
M
o
v
e
a
b
l
e
P
u
l
l
e
y
M
a
x
i
m
u
m
F
u
l
l
T
u
r
n
s
From Closed Position Alt 5 5
High-Static 5 6
Factory Setting Std 5 5
Alt 5 5
High-Static 5 5
Factory Speed Setting (rpm) Std 590 685
Alt 685 835
High-Static 860 887
Fan Shaft Diameter at Pulley (in.) 1 1
HIGH-PRESSURE SWITCH (psig)
Standard Compressor Internal Relief (Differential) 450 ±50
Cutout 428
Reset (Auto.) 320
LOSS-OF-CHARGE (LOW-PRESSURE) SWITCH (psig)
Cutout 7±3
Reset (Auto.) 22 ±5
FREEZE PROTECTION THERMOSTAT (F)
Opens 30 ±5
Closes 45 ±5
OUTDOOR-AIR INLET SCREENS Cleanable.
Screen quantity and size vary based on options selected.
RETURN-AIR FILTERS Throwaway
Quantity...Size (in.) 4...16 x 20 x 2 4...20 x 20 x 2
LEGEND Bhp — Brake Horsepower
50TFQ

19
BASE UNIT DIMENSIONS—50TFQ004--007
50 TFQ
C06069
50TFQ

20
BASE UNIT DIMENSIONS—50TFQ008--012
C06070
50TFQ