50TCQ-4-14-01SM
50TCQ*04-14
Single Package Heat Pump/Electric Heat
Nominal 3 to 12.5 Tons
With Puron (R-410A) Refrigerant
Service and Maintenance Instructions
TABLE OF CONTENTS
SAFETY CONSIDERATIONS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . 1
Installation and servicing of air-conditioning equipment
can be hazardous due to system pressure and electrical
components. Only trained and qualified service personnel
should install, repair, or service air-conditioning
equipment. Untrained personnel can perform only the
basic maintenance functions such as replacing filters.
Trained service personnel should perform all other service
and maintenance operations.
UNIT ARRANGEMENT AND ACCESS . . . . . . . . . . . 3
RETURN AIR FILTERS: . . . . . . . . . . . . . . . . . . . . . . . . 3
SUPPLY FAN (BLOWER) SECTION . . . . . . . . . . . . . . 4
HEAT PUMP REFRIGERATION SYSTEM . . . . . . . . . 9
PURON (R−410A) REFRIGERANT . . . . . . . . . . . . . 12
THERMOSTATIC EXPANSION VALVE (TXV) . . . . 13
COOLING CHARGING CHARTS . . . . . . . . . . . . . . . . 15
CONVENIENCE OUTLETS . . . . . . . . . . . . . . . . . . . . 23
HEAT PUMP CONTROLS . . . . . . . . . . . . . . . . . . . . . . 24
PROTECTIVE CONTROLS . . . . . . . . . . . . . . . . . . . . . 24
COMMERCIAL DEFROST CONTROL . . . . . . . . . . . 25
ELECTRIC HEATERS . . . . . . . . . . . . . . . . . . . . . . . . . 28
SMOKE DETECTORS . . . . . . . . . . . . . . . . . . . . . . . . . 31
PREMIERLINK™ CONTROL . . . . . . . . . . . . . . . . . . . 38
RTU−OPEN CONTROL SYSTEM . . . . . . . . . . . . . . . . 39
SENSORY/ACCESSORY INSTALLATION . . . . . . . . 39
ADDITIONAL RTU−OPEN INSTALLATION AND
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . 39
PRE−START−UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
START−UP, PREMIERLINK™ . . . . . . . . . . . . . . . . . . . 43
START−UP, RTU−OPEN . . . . . . . . . . . . . . . . . . . . . . . . 43
FASTENER TORQUE VALUES . . . . . . . . . . . . . . . . . 44
APPENDIX I. MODEL NUMBER SIGNIFICANCE . 45
APPENDIX II. PHYSICAL DATA . . . . . . . . . . . . . . . . 47
APPENDIX III. FAN PERFORMANCE . . . . . . . . . . . 49
APPENDIX IV. WIRING DIAGRAMS . . . . . . . . . . . . 62
APPENDIX V. MOTORMASTER SENSOR
LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . 83
When working on air-conditioning equipment, observe
precautions in the literature, tags and labels attached to
the unit, and other safety precautions that can apply.
Follow all safety codes. Wear approved safety glasses and
leather work gloves. Use quenching cloth for unbrazing
operations. Have fire extinguishers available for all
brazing operations.
Read these instructions thoroughly and follow all
warnings or cautions attached to the unit. Consult local
building codes and National Electrical Code (NEC) for
special requirements.
Recognize safety information. This is the safety ALERT
. When you see this symbol on the unit and in
symbol
instructions or manuals, be aware of the potential for
physical injury hazards.
Understand the signal words DANGER, WARNING, and
CAUTION. These words are used with the safety−ALERT
symbol. DANGER indicates a hazardous situation which,
if not avoided, will result in death or severe personal
injury. WARNING indicates a hazardous situation which,
if not avoided, could result in death or personal injury.
CAUTION indicates a hazardous situation which, if not
avoided, could result in minor to moderate injury or
product and property damage. NOTICE is used to address
practices not related to physical injury. NOTE is used to
highlight suggestions which will result in enhanced
installation, reliability, or operation.
!
WARNING
!
FIRE, EXPLOSION HAZARD
Failure to follow this
warning could result in
death, serious personal
injury and/or property
damage.
Never use air or gases containing oxygen for leak testing
or for operating refrigerant compressors. Pressurized
mixtures of air or gases containing oxygen can lead to an
explosion.
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal
injury or death.
Before performing service or maintenance operations
on unit, LOCK−OUT/TAGOUT the main power
switch to unit. Electrical shock and rotating equipment
could cause severe injury.
!
WARNING
!
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal
injury or death.
Units with convenience outlet circuits can use
multiple disconnects. Check convenience outlet for
power status before opening unit for service. Locate
the disconnect switch and lock it in the open position
it. LOCK−OUT/TAGOUT this switch to notify others.
!
WARNING
FIRE, EXPLOSION HAZARD
Failure to follow this
warning could result in
death, serious personal
injury and/or property
damage.
Never use non−certified refrigerants in this product.
Non−certified refrigerants could contain contaminates
that could lead to unsafe operating conditions. Use
ONLY refrigerants that conform to AHRI Standard
700.
WARNING
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could cause personal
injury, death and/or equipment damage.
Puron (R−410A) refrigerant systems operate at higher
pressures than standard R−22 systems. Do not use
R−22 service equipment or components on Puron
refrigerant equipment.
!
WARNING
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in reduced
unit performance or unit shutdown.
High velocity water from a pressure washer, garden
hose, or compressed air should never be used to
clean a coil. The force of the water or air jet will
bend the fin edges and increase airside pressure drop.
WARNING
FIRE, EXPLOSION HAZARD
Failure to follow this
warning could result in
death, serious personal
injury and/or property
damage.
NOTICE
OPERATIONAL TEST ALERT
Failure to follow this ALERT can result in an
unnecessary evacuation of the facility.
Pressing the controller’s test/reset switch for longer
than seven seconds will put the duct detector into the
alarm state and activate all automatic alarm responses.
Disconnect gas piping from unit when pressure testing
at pressure greater than 0.5 psig. Pressures greater than
0.5 psig will cause gas valve damage resulting in hazardous condition. If gas valve is subjected to pressure
greater than 0.5 psig, it must be replaced before use.
When pressure testing field-supplied gas piping at
pressures of 0.5 psig or less, a unit connected to such
piping must be isolated by closing the manual gas
valve(s).
2
UNIT ARRANGEMENT AND ACCESS
Seasonal Maintenance
General
The following items should be checked at the beginning
of each season (or more often if local conditions and
usage patterns dictate):
Fig. 1 and Fig. 2 show general unit arrangement and
access locations.
CONTROL BOX
INDOOR BLOWER
ACCESS
Air Conditioning/Heat Pump:
Electric Heating:
COMPRESSORS
(D08-12 only)
C09190
Fig. 1 − Typical Access Panel Location (Front)
FILTER ACCESS
PANEL
Inspect power wire connections
Ensure fuses are operational
Ensure manual−reset limit switch is closed
Economizer or Outside Air Damper
Check inlet filters condition
Check damper travel (economizer)
Check gear and dampers for debris and dirt
Air Filters and Screens
COMPRESSOR
ACCESS PANEL
(04 - 07 only)
OUTDOOR-AIR OPENING
AND INDOOR COIL
ACCESS PANEL
Each unit is equipped with return air filters. If the unit has
an economizer, it will also have an outside air screen. If a
manual outside air damper is added, it will also have a an
inlet air screen.
Each of these filters and screens will need to be
periodically cleaned or replaced.
RETURN AIR FILTERS:
C08449
CAUTION
Fig. 2 − Typical Access Panel Locations (Rear)
Routine Maintenance
EQUIPMENT DAMAGE HAZARD
Failure to follow this CAUTION can result in
premature wear and damage to equipment.
These items should be part of a routine maintenance
program, to be checked every month or two, until a
specific schedule for each can be identified for this
installation:
DO NOT OPERATE THE UNIT WITHOUT THE
RETURN AIR FILTERS IN PLACE.
Quarterly Inspection (and 30 days after initial start):
Ensure outdoor fan motor mounting bolts are tight
Ensure compressor mounting bolts are tight
Inspect outdoor fan blade positioning
Ensure control box is clean
Check control box wiring condition
Ensure wire terminals are tight
Check refrigerant charge level
Ensure indoor coils are clean
Check supply blower motor amperage
Replace return air filter
Clean outdoor hood inlet filters
Check belt tension
Check belt condition
Inspect pulley alignment
Check fan shaft bearing locking collar tightness
Check outdoor coil cleanliness
Check condensate drain
Dirt and debris build−up on components can cause
premature wear on components resulting in
component failure.
Return Air Filters are disposable fiberglass filters. Access
to the filters is through the lift−out filter access panel
located on the rear side of the unit, above the indoor coil
access panel. See Fig. 2.
3
Removing the Return Air Filters:
1. Grasp the bottom flange of the upper panel.
2. Lift up and swing the bottom out until the panel
disengages and pulls out.
3. Reach inside and remove filters from the filter rack.
4. Replace filters as required with similar replacement
filters of same size.
Re−installing the Access Panel:
1. Slide the top of the panel up under the unit top panel.
2. Slide the bottom into the side channels.
3. Push the bottom flange down until it contacts the top
of the lower panel (or economizer top).
C07156
Fig. 4 − Screens Installed on Outdoor−Air Hood
(Sizes A07, D08−09s Shown)
Outside Air Hood:
Outside Air Hood inlet screens are permanent
aluminum−mesh type filters. Check these for cleanliness.
Remove the screens when cleaning is required. Clean by
washing with hot low−pressure water and soft detergent
and replace all screens before restarting the unit. Observe
the flow direction arrows on the side of each filter frame.
Economizer Inlet Air Screen:
Remove the screen by loosening the three screws in the
top retainer and move the retainer up until the filter can be
removed.
Re−install the Manual Outside Air Hood Screen by
placing the screen frame in its track, rotating the retainer
back down. Tighten all screws.
This air screen is retained by filter clips under the top
edge of the hood. See Fig. 3.
SUPPLY FAN (BLOWER) SECTION
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning can cause personal
injury or death.
Before performing service or maintenance operations
on the fan system, disconnect all electrical power to
the unit and apply approved Lock−out/Tagout
procedures to the unit disconnect switch. Do not
reach into the fan section with power applied to unit.
DIVIDER
OUTSIDE
AIR
HOOD
CLEANABLE
ALUMINUM
FILTER
WARNING
FILTER
Supply Fan (Direct−Drive)
BAROMETRIC
RELIEF
FILTER
CLIP
C08634
Fig. 3 − Filter Installation
To remove the filter, open the spring clips. Re−install the
filter by placing the frame in its track, then closing the
filter clips.
For unit sizes 04, 05 and 06, a direct−drive
forward−curved centrifugal blower wheel is an available
option. The motor has taps to provide the servicer with the
selection of one of five motor torque/speed ranges to best
match wheel performance with attached duct system. See
Fig. 5 (50TCQ Direct−Drive Fan Assembly) and Fig. 6
(ECM Motor Connectors).
Manual Outside Air Hood Screen
The Manual Outside Air Hood Screen is secured by three
screws and a retainer angle across the top edge of the
hood. See Fig. 4.
4
ECM Motor
L2
YEL
Gnd
GRN/YEL
95°
Motor
Power
Connections
L1
BLU
Motor Plug Position
(95° from vertical)
ECM Power
Transformer
(460, 575v)
C L G N
Com
BRN
Speed
Taps
C09260
1 2 3 4 5
VIO
Default Connection
Fig. 5 − 50TCQ Direct−Drive Supply Fan Assembly
C09261
Fig. 6 − ECM Motor Connectors
208/230, 460V Units
575V Units
C09263
Fig. 7 − ECM Unit Wiring
5
ECM Motor — The direct−drive motor is an X13
Electronically Commutated Motor (ECM). An ECM
motor contains electronic circuitry used to convert
single−phase line AC voltage into 3−phase DC voltage to
power the motor circuit. The motor circuit is a DC
brushless design with a permanent magnet rotor. On the
X13 ECM Motor design, the electronic circuitry is
integral to the motor assembly and cannot be serviced or
replaced separately.
208/230V units use a 230V motor, 460V units use a 460V
motor and 575V units use a 460V motor with an
autotransformer. Motor power voltage is connected to
motor terminals L and N (see Fig. 6 and Fig. 7); ground
is connected at terminal G. The motor power voltage is
ALWAYS present; it is not switched off by a motor
contactor.
Motor operation is initiated by the presence of a 24V
control signal to one of the five motor communications
terminals. When the 24V signal is removed, the motor
will stop. The motor control signal is switched by the
defrost board’s IFO output.
Evaluating motor speed — The X13 ECM Motor uses a
constant torque motor design. The motor speed is adjusted
by the motor control circuitry to maintain the programmed
shaft torque. Consequently there is no specific speed value
assigned to each control tap setting. At the Position 5 tap,
the motor speed is approximately 1050 RPM (17.5 r/s) but
varies depending on fan wheel loading.
Selecting speed tap — The five communication terminals
are each programmed to provide a different motor torque
output. See Table 1. Factory default tap selection is
Position 1 for lowest torque/speed operation.
Table 1 – 50TCQ Motor Tap Programing (percent of
full−load torque)
Unit Size
04
05
06
Tap 1
29
46
49
Tap 2
33
49
55
Tap 3
41
57
79
Tap 4
48
67
90
X13 ECM requires a voltmeter.
1. Disconnect main power to the unit.
2. Remove the motor power plug (including the control
BRN lead) and VIO control signal lead at the motor
terminals.
3. Restore main unit power.
4. Check for proper line voltage at motor power leads
BLK (at L terminal) and YEL (at N terminal).
Table 2 – Motor Test Volts
Unit Voltage
208/230
460
575
Replacing the X−13 ECM Motor — Before removing
the ECM belly−band mounting ring from old motor:
1. Measure the distance from base of the motor shaft to
the edge of the mounting ring.
2. Remove the motor mounting band and transfer it to
the replacement motor.
3. Position the mounting band at the same distance that
was measured in Step 1.
4. Hand−tighten mounting bolt only. Do not tighten
securely at this time.
5. Insert the motor shaft into the fan wheel hub.
6. Securely tighten the three motor mount arms to the
support cushions and torque the arm mounting screws
to 60 in−lbs (6.8 Nm).
7. Center the fan wheel in the fan housing. Tighten the
fan wheel hub setscrew and torque to 120 in−lbs (13.6
Nm).
8. Ensure the motor terminals are located at a position
below the 3 o’clock position. See Fig. 5. Tighten the
motor belly−band bolt and torque to 80 in−lbs (9.0
Nm).
Factory Default: Tap 1 (VIO)
Selecting another speed:
1. Disconnect main power to the unit. Apply
lockout/tagout procedures.
2. Remove the default motor signal lead (VIO) from
terminal 1 at the motor communications terminal.
3. Reconnect the motor signal lead to the desired speed
(terminals 1 through 5).
4. Connect main power to the unit.
Troubleshooting the ECM motor — Troubleshooting the
Min-Max Volts
187-253
414-506
414-506
5. Using a jumper wire from unit control terminals R to
G, engage motor operation. Check for 24v output at
the defrost board terminal IFO.
6. Check for proper control signal voltages of 22V to
28V at motor signal leads VIO and BRN.
7. Disconnect unit main power. Apply lockout/tagout
procedures.
8. Reconnect motor power and control signal leads at
the motor terminals.
9. Restore unit main power.
10. The motor should start and run. If the motor does not
start, remove the motor assembly. Replace the motor
with one having the same part number. Do not
substitute with an alternate design motor as the
torque/ speed programming will not be the same as
that on an original factory motor.
Tap 5
100
100
100
Motor “rocking” on start−up — When the motor first
starts, the rotor (and attached wheel) will “rock” back and
forth as the motor tests for rotational direction. Once the
correct rotational direction is determined by the motor
circuitry, the motor will ramp up to the specified speed.
The “rocking” is a normal operating characteristic of
ECM motors.
Motor Voltage
230
460
460
Supply Fan (Belt−Drive)
The belt−drive supply fan system consists of a
forward−curved centrifugal blower wheel on a solid shaft
with two concentric type bearings, one on each side of the
blower housing. A fixed−pitch driven pulley is attached to
6
the fan shaft and an adjustable−pitch driver pulley is on
the motor. The pulleys are connected using a V−belt. See
Fig. 8.
STRAIGHTEDGE
BROWNING BELT
TENSION CHECKER
BLOWER PULLEY
1/2”
(1.3 cm)
V-BELT
MOTOR
PULLEY
MOTOR
BELT
DEFLECTION
MOUNTING
BOLTS (4)
C12093
MOTOR MOUNTING
PLATE
Fig. 9 − Checking Blower Motor Belt Tension
C11504
Fig. 8 − Typical Belt Drive Motor Mounting
Replacing the Belt:
For units equipped with a VFD factory installed option
(FIOP), refer to the following supplement: “Variable
Frequency Drive (VFD) Installation, Setup and
Troubleshooting.”
NOTE: Use a belt with same section type or similar size.
Do not substitute a FHP−type belt. When installing the
new belt, do not use a tool (screwdriver or pry−bar) to
force the belt over the pulley flanges, this will stress the
belt and cause a reduction in belt life. Damage to the
pulley can also occur.
Belt
Use the following steps to replace the V−belt. See Fig. 8.
Variable Frequency Drive (VFD)
Check the belt condition and tension quarterly. Inspect the
belt for signs of cracking, fraying or glazing along the
inside surfaces. Check belt tension by using a spring−force
tool, such as Browning’s “Belt Tension Checker” (p/n:
1302546 or equivalent tool); tension should be 6−lbs at a
5/ −in (1.6 cm). deflection when measured at the
8
centerline of the belt span. This point is at the center of
the belt when measuring the distance between the motor
shaft and the blower shaft.
1. Loosen the front and rear motor mounting plate bolts.
2. Push the motor and its mounting plate towards the
blower housing as close as possible to reduce the
center distance between fan shaft and motor shaft.
3. Remove the belt by gently lifting the old belt over
one of the pulleys.
4. Install the new belt by gently sliding the belt over
both pulleys and then sliding the motor and plate
away from the fan housing until proper tension is
achieved.
5. Check the alignment of the pulleys, adjust if necessary.
6. Tighten all bolts and torque to 65−70 in−lb (7.4 to 7.9
Nm).
7. Check the tension after a few hours of runtime and
re−adjust as required.
NOTE: Without the spring−tension tool, place a straight
edge across the belt surface at the pulleys, then push down
on the belt at mid−span using one finger until a 1/2−in.
(1.3 cm) deflection is reached. See Fig. 9.
Adjust belt tension by loosening the motor mounting plate
front and rear bolts and sliding the plate toward the fan (to
reduce tension) or away from fan (to increase tension).
Ensure the blower shaft and the motor shaft are parallel to
each other (pulleys aligned). When finished, tighten all
bolts and torque to 65−70 in−lb (7.4 to 7.9 Nm).
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this CAUTION can result in
premature wear and damage to equipment.
Do not use a screwdriver or a pry bar to place the new
V−belt in the pulley groove. This can cause stress on
the V−belt and the pulley resulting in premature wear
on the V−belt and damage to the pulley.
Adjustable−Pitch Pulley on Motor:
The motor pulley is an adjustable−pitch type that allows a
servicer to implement changes in the fan wheel speed to
match as−installed ductwork systems. The pulley consists
7
of a fixed flange side that faces the motor (secured to the
motor shaft) and a movable flange side that can be rotated
around the fixed flange side that increases or reduces the
pitch diameter of this driver pulley. See Fig. 10.
bearing. Tighten the socket head cap screw. Torque cap
screw to 55−60 in−lb (6.2−6.8 Nm). See Fig. 11. Check
the condition of the motor pulley for signs of wear.
Glazing of the belt contact surfaces and erosion on these
surfaces are signs of improper belt tension and/or belt
slippage. Pulley replacement can be necessary.
LOCKING COLLAR
T-25 TORX SOCKET
HEAD CAP SCREW
C07075
C11505
Fig. 10 − Supply−Fan Pulley Adjustment
As the pitch diameter is changed by adjusting the position
of the movable flange, the centerline on this pulley shifts
laterally (along the motor shaft). This creates a
requirement for a realignment of the pulleys after any
adjustment of the movable flange. Reset the belt tension
after each realignment.
Inspect the condition of the motor pulley for signs of
wear. Glazing of the belt contact surfaces and erosion on
these surfaces are signs of improper belt tension and/or
belt slippage. Replace pulley if wear is excessive.
Changing the Fan Speed:
1. Shut off unit power supply. Use proper lockout/tagout
procedures.
2. Loosen belt by loosening fan motor mounting nuts.
See Fig. 8.
3. Loosen movable pulley flange setscrew. See Fig. 10.
4. Screw movable flange toward fixed flange to increase
speed and away from fixed flange to decrease speed.
Increasing fan speed increases load on motor. Do not
exceed the maximum specified speed.
5. Set movable flange at nearest keyway of pulley hub.
Tighten setscrew and torque to 65−70 in−lb (7.4 to 7.9
Nm).
Aligning Blower and Motor Pulleys:
1. Loosen blower pulley setscrews.
2. Slide blower pulley along blower shaft. Make angular
alignment by loosening motor mounting plate front
and rear bolts.
3. Tighten blower pulley setscrews and motor mounting
bolts. Torque bolts to 65−70 in−lb (7.4 to 7.9 Nm).
4. Recheck belt tension.
Fig. 11 − Tightening Locking Collar
Motor
When replacing the motor, also replace the external−tooth
lock washer (star washer) under the motor mounting base;
this is part of the motor grounding system. Ensure the
teeth on the lock washer are in contact with the motor’s
painted base. Tighten motor mounting bolts and torque to
120 ± 12 in−lbs (14 ± 1.4 Nm).
Change fan wheel speed by changing the fan pulley
(larger pitch diameter to reduce wheel speed, smaller
pitch diameter to increase wheel speed) or select a new
system (both pulleys and matching belt). The horsepower
rating of the belt is primarily dictated by the pitch
diameter of the smaller pulley in the drive system
(typically the motor pulley in these units). Do not install a
replacement motor pulley with a smaller pitch diameter
than was provided on the original factory pulley.
Before changing pulleys to increase fan wheel speed,
check the fan performance at the target speed and airflow
rate to determine new motor loading (bhp). Use the fan
performance tables or use the Packaged Rooftop Builder
software program. Confirm that the motor in this unit is
capable of operating at the new operating condition. Fan
shaft loading increases dramatically as wheel speed is
increased.
To reduce vibration, replace the motor’s adjustable pitch
pulley with a fixed pitch pulley (after the final airflow
balance adjustment). This will reduce the amount of
vibration generated by the motor/belt−drive system.
Bearings:
The fan system uses bearings featuring concentric split
locking collars. A Torx T−25 socket head cap screw is
used to tighten the locking collars. Tighten the locking
collar by holding it tightly against the inner race of the
8
HEAT PUMP REFRIGERATION
SYSTEM
!
WARNING
A periodic clean water rinse is very beneficial for coils
that are applied in coastal or industrial environments.
However, it is very important that the water rinse is made
with very low velocity water stream to avoid damaging
the fin edges. Monthly cleaning as described below is
recommended.
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could cause personal
injury, death and/or equipment damage.
This system uses Puron (R410A) refrigerant that
operates at higher pressures than standard R−22
systems and other refrigerants. No other refrigerant
can be used in this system. Gauge set, hoses, and
recovery system must be designed to handle Puron
refrigerant. If unsure about equipment, consult the
equipment manufacturer.
!
CAUTION
PERSONAL INJURY AND UNIT DAMAGE
HAZARD
Failure to follow this caution can result in personal
injury or equipment damage.
Only approved cleaning is recommended.
Routine Cleaning of Indoor Coil Surfaces:
Outdoor Coil
The 50TCQ outdoor coil is fabricated with round tube
copper hairpins and plate fins of various materials and/or
coatings (see “Appendix I − Model Number Significance”
to identify the materials provided in this unit). All unit
sizes use composite−type two−row coils. Composite
two−row coils are two single−row coils fabricated with a
single return bend end tubesheet.
Indoor Coil
The indoor coil is traditional round−tube, plate−fin
technology. Tube and fin construction is of various
optional materials and coatings (see Model Number
Format). Coils are multiple−row.
Recommended Outdoor Coil Maintenance
and Cleaning
Routine cleaning of coil surfaces is essential to maintain
proper operation of the unit. Elimination of contamination
and removal of harmful residues will greatly increase the
life of the coil and extend the life of the unit. The
following maintenance and cleaning procedures are
recommended as part of the routine maintenance activities
to extend the life of the coil.
Remove Surface Loaded Fibers:
Surface loaded fibers or dirt should be removed with a
vacuum cleaner. If a vacuum cleaner is not available, a
soft non−metallic bristle brush can be used. In either case,
the tool should be applied in the direction of the fins. Coil
surfaces can be easily damaged (fin edges can be easily
bent over and damage the coating of a protected coil)
when the tool is applied across the fins.
Periodic cleaning with Totaline ® Environmentally Sound
Coil Cleaner is essential in extending the life of coils.
This cleaner is available from Carrier Replacement
Components Division (p/n P902−0301 for one gallon
[3.8L] container, and p/n P902−0305 for a 5 gallon [19L]
container). It is recommended that all coils (including
standard aluminum, pre−coated, copper/copper or
E−coated coils) be cleaned with the Totaline
Environmentally Sound Coil Cleaner as described below.
Coil cleaning should be part of the unit’s regularly
scheduled maintenance procedures ensuring the long life
of the coil. Failure to clean the coils can result in reduced
durability in the environment.
Avoid the use of:
coil brighteners
acid cleaning prior to painting
high pressure washers
poor quality water for cleaning
Totaline Environmentally Sound Coil Cleaner is non−
flammable, hypoallergenic, non bacterial and a USDA
accepted biodegradable agent that will not harm the coil
or surrounding components, such as electrical wiring,
painted metal surfaces or insulation. Use of
non−recommended coil cleaners is strongly discouraged
because coil and unit durability can be affected.
Clean coil as follows:
1. Turn off unit power. Use lockout/tagout procedures
on unit power switch.
2. Remove top panel screws on outdoor coil end of unit.
3. Remove coil corner post. See Fig. 12. To hold top
panel open, place coil corner post between top panel
and center post. See Fig. 13.
NOTE: Use of a water stream, such as a garden hose,
against a surface loaded coil will drive the fibers and dirt
into the coil. This will make cleaning efforts more
difficult. Surface loaded fibers and dirt must be
completely removed prior to using low velocity clean
water rinse.
Periodic Clean Water Rinse:
9
C07089
C08207
Fig. 12 − Cleaning Condenser Coil (Size 04−06 shown)
Fig. 14 − Separating Coil Sections
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution can result in corrosion
and damage to the unit.
Harsh chemicals, household bleach, acid or basic
cleaners should not be used to clean outdoor or indoor
coils of any kind. These cleaners can be very difficult
to rinse out of the coil and can accelerate corrosion at
the fin/tube interface where dissimilar materials are in
contact. If there is dirt below the surface of the coil,
use the Totaline Environmentally Sound Coil Cleaner
as described below.
C08206
Fig. 13 − Propping Up Top Panel
4. For Sizes 04−06: Remove screws securing coil to
compressor plate and compressor access panel.
5. For Sizes 07−14: Remove fastener holding coil
sections together at return end of condenser coil.
Carefully separate the outdoor coil section 3 to 4 in.
(7.6−10 cm) from the inner coil section. See Fig. 14.
6. Clean the outer surfaces with a stiff brush in the
normal manner. Use a water hose or other suitable
equipment to flush down between the 2 coil sections
to remove dirt and debris.
7. Secure inner and outer coil rows together with a
field−supplied fastener.
8. Reposition the outer coil section and remove the coil
corner post from between the top panel and center
post. Reinstall the coil corner post and replace all
screws.
Totaline Environmentally Sound Coil Cleaner
Application Equipment:
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution can result in reduced
unit performance.
High velocity water from a pressure washer, garden
hose, or compressed air should never be used to clean
a coil. The force of the water or air jet will bend the
fin edges and increase airside pressure drop.
Totaline Environmentally Sound Coil Cleaner
Application Instructions:
1. Proper protection equipment, such as approved safety
glasses and gloves, is recommended during mixing
and application of Totaline Environmentally Sound
Coil Cleaner.
2. Remove all surface loaded fibers and debris using a
vacuum cleaner or a soft non−metallic bristle brush
as described above.
3. Thoroughly wet all finned surfaces with clean water
using a low velocity garden hose being careful not to
bend fins.
4. Mix Totaline Environmentally Sound Coil Cleaner in
a 2.5 gal (9.5L) garden spryer according to the
2.5 gal (9.5L) garden sprayer
Water rinse with low velocity spray nozzle
10
instructions included with the cleaner. The optimum
solution temperature is 100°F (38°C).
NOTE: Do NOT USE water in excess of 130°F (54°C), as
the enzymatic activity will be destroyed.
5. Thoroughly apply Totaline Environmentally Sound
Coil Cleaner solution to all coil surfaces including
finned area, tube sheets and coil headers.
6. Hold garden sprayer nozzle close to finned areas and
apply cleaner with a vertical, up−and−down motion.
Avoid spraying in horizontal pattern to minimize
potential for fin damage.
7. Ensure cleaner thoroughly penetrates deep into finned
areas.
8. Interior and exterior finned areas must be thoroughly
cleaned.
9. Finned surfaces should remain wet with cleaning
solution for 10 minutes.
10. Ensure surfaces are not allowed to dry before rinsing.
Reapply cleaner as needed to ensure 10−minute
saturation is achieved.
11. Thoroughly rinse all surfaces with low velocity clean
water using downward rinsing motion of water spray
nozzle. Protect fins from damage from the spray
nozzle.
3. If economizer or two−position damper is installed,
remove economizer by disconnecting the Molex®
plug and removing mounting screws.
4. Slide filters out of unit.
5. Clean coil using a commercial coil cleaner or
dishwasher detergent in a pressurized spray canister.
Wash both sides of coil and flush with clean water.
For best results, back−flush toward return−air section
to remove foreign material. Flush condensate pan
after completion.
6. Reinstall economizer and filters.
7. Reconnect wiring.
8. Replace access panels.
Refrigeration System Components:
Each heat pump refrigeration system includes a
compressor, accumulator, reversing valve, dual−function
outdoor coil with vapor header check valve, cooling liquid
line with a filter drier and a check valve, dual−function
indoor coil with a vapor header check valve, and heating
liquid line with check a valve and a strainer. Unit sizes
A04−07 have a single compressor−circuit; unit sizes D08
through D12 have two compressor−circuits. See Fig. 15
for typical unit piping schematic (unit size D09 (4−row
indoor coil) with two compressor−circuits is shown).
Indoor Coil
Dual−function outdoor and indoor coils are designed to
provide parallel coil circuits during evaporator−function
operation and converging coil circuits during the
condenser−function operation.
Cleaning the Indoor Coil:
1. Turn unit power off. Use proper lockout/tagout
procedures.
2. Remove indoor coil access panel.
LPS/LOC
Filter
Drier
2B
Cooling Liquid Lines
1B
Acutrol
DFT 1
Acutrol
1A
DFT 2
COMPRESSOR
ACCUMULATOR
2D
HPS
Comp 2
1D
COMPRESSOR
ACCUMULATOR
2A
Outdoor Coil
Heating Mode Liquid Lines
HPS
Indoor Coil
Comp 1
2C
1C
Strainer
C09228
Fig. 15 − Typical Unit Piping Schematic (with TXV valves on Indoor Coils)
11
Reversing Valve and Check Valve Position
See Fig. 15 on page 11.
Table 3 – Cooling Mode (each circuit)
Component
Status/Position
Reversing Valve
Energized
Check Valve A
Closed
Check Valve B
Open
Check Valve C
Closed
Check Valve D
Open
Troubleshooting Refrigerant Pressure
Problems and Check Valves
Refer to Fig. 15, above, and the Cooling Mode and
Heating Mode tables (Tables 3 and 4) above.
Refrigerant System Pressure Access Ports
There are two access ports in each circuit − on the suction
tube and the discharge tube near the compressor. These
are brass fittings with black plastic caps. The hose
connection fittings are standard 1/4 SAE male flare
couplings.
Table 4 – Heating Mode (each circuit)
Component
Status/Position
Reversing Valve
De-energized
Check Valve A
Open
Check Valve B
Closed
Check Valve C
Open
Check Valve D
Closed
Table 5 – Defrost Mode
A04-A07 and D08-D14/Circuit 2:
Component
Status/Position
Defrost Thermostat
Closed
Outdoor Fan(s)
Off
Reversing Valve
Energized
Check Valve A
Closed
Check Valve B
Open
Check Valve C
Closed
Check Valve D
Open
The brass fittings are two−piece High Flow valves, with a
receptacle base brazed to the tubing and an integral
spring−closed check valve core screwed into the base. See
Fig. 16. This check valve is permanently assembled into
this core body and cannot be serviced separately. Replace
the entire core body if necessary. Service tools are
available from RCD that allow the replacement of the
check valve core without having to recover the entire
system refrigerant charge. Apply compressor refrigerant
oil to the check valve core’s bottom O−ring. Install the
fitting body and torque to 96±10 in−lbs (10.9 ± 1 Nm). Do
not exceed 106 in−lbs (11.9 Nm) when tightening.
o
o
C08453
Fig. 16 − CoreMax Access Port Assembly
PURONR (R−410A) REFRIGERANT
This unit is designed for use with Puron (R−410A)
refrigerant. Do not use any other refrigerant in this
system.
tube, place the cylinder in the upright position (access
valve at the top) when removing liquid refrigerant for
charging. For a cylinder without a dip tube, invert the
cylinder (access valve on the bottom) when removing
liquid refrigerant.
Puron (R−410A) refrigerant is provided in pink (rose)
colored cylinders. These cylinders are available with and
without dip tubes; cylinders with dip tubes will have a
label indicating this feature. For a cylinder with a dip
Because Puron (R−410A) refrigerant is a blend, it is
strongly recommended that refrigerant always be removed
from the cylinder as a liquid. Add liquid refrigerant into
the system in the discharge line. If adding refrigerant into
12
the suction line, use a commercial metering/expansion
device at the gauge manifold; remove liquid from the
cylinder, pass it through the metering device at the gauge
set and then pass it into the suction line as a vapor. Do not
remove Puron (R−410A) refrigerant from the cylinder as a
vapor.
The TXV is a metering device that is used in air
conditioning and heat pump systems to adjust to changing
load conditions by maintaining a preset superheat
temperature at the outlet of the evaporator coil. The
volume of refrigerant metered through the valve seat is
dependent upon the following (see Fig. 17):
1. Superheat temperature is sensed by the cap tube
sensing bulb on the suction tube at outlet of the
evaporator coil. This temperature is converted into
pressure by refrigerant in the bulb pushing downward
on the diaphragm which opens the valve using the
push rods. As long as this bulb and cap tube contain
any liquid refrigerant, this temperature is converted
into suction pressure pushing downward on the
diaphragm, which tends to open the TXV valve
through the push rods.
2. The suction pressure at the outlet of the evaporator
coil is transferred through the external equalizer tube
to the underside of the diaphragm.
3. The needle valve on the pin carrier is spring loaded,
exerting pressure on the underside of the diaphragm.
Therefore, the bulb pressure equals evaporator
pressure (at outlet of coil) plus spring pressure. If the
load increases, the temperature increases at the bulb,
which increases the pressure on the top side of the
diaphragm, pushing the carrier away from the seat,
opening the valve and increasing the flow of
refrigerant. The increased refrigerant flow causes
increased leaving evaporator pressure which is
transferred through the equalizer tube to the underside
of the diaphragm. This causes pin carrier spring
pressure to close the TXV valve. The refrigerant flow
is effectively stabilized to the load demand with a
negligible change in superheat.
Refrigerant Charge
The amount of refrigerant charge is listed on the unit’s
nameplate. Refer to Carrier Publication, “GTAC2−5
Charging, Recovery, Recycling and Reclamation Training
Manual” and the following procedures:
Unit panels must be in place when unit is operating during
the charging procedure. If unit is equipped with a head
pressure control device, bypass it to ensure full fan
operation during charging.
Charge checking and adjustments must be made while the
system is operating in Cooling only.
No Charge:
Use standard evacuation techniques for Puron (R−410A)
refrigerant.. After evacuating system, weigh the specified
amount of refrigerant.
THERMOSTATIC EXPANSION
VALVE (TXV)
All 50TCQ’s have a factory installed nonadjustable
thermostatic expansion valve (TXV). The TXV will be a
bi-flow, bleed port expansion valve with an external
equalizer. TXVs are specifically designed to operate with
Puron refrigerant, use only factory authorized TXVs.
See Fig. 15 for a typical piping schematic.
TXV Operation
CAPILLARY TUBE
DIAPHRAGM
PUSHRODS
FEEDER TUBES
INLET
COIL
OUTLET
NEEDLE
VALVE
SPRING
DISTRIBUTOR
BULB
EXTERNAL EQUALIZER TUBE
C12046
Fig. 17 − Thermostatic Expansion Valve (TXV) Operation
13
Replacing TXV
!
CAUTION
PERSONAL INJURY HAZARD
Failure to follow this caution can result in injury to
personnel and damage to components.
Always wear approved safety glasses, work gloves
and other recommended Personal Protective
Equipment (PPE) when working with refrigerants.
THERMAL EXPANSION
(TXV) VALVE
1. Recover refrigerant.
2. Remove TXV support clamp using a 5/l6-in. nut
driver.
3. Remove TXV using a backup wrench on connections
to prevent damage to tubing.
4. Remove equalizer tube from suction line of coil. Use
file or tubing cutter to cut brazed equalizer line
approximately 2 inches above suction tube.
5. Remove bulb from vapor tube inside cabinet.
6. Install the new TXV and avoid damaging the tubing
or the valve when attaching the TXV to the
distributor.
7. Attach equalizer tube to suction line. If coil has
mechanical connection, then use wrench and back up
wrench to attach. If coil has brazed connection, use
file or tubing cutters to remove mechanical flare nut
from equalizer line. Then use coupling to braze the
equalizer line to stub (previous equalizer line) in
suction line.
8. Attach TXV bulb in the same location as original (in
the sensing bulb indent), wrap bulb in protective
insulation and secure using the supplied bulb clamp.
See Fig. 18.
9. Route equalizer tube through suction connection
opening (large hole) in fitting panel and install fitting
panel in place.
10. Sweat inlet of TXV marked “IN” to liquid line. Avoid
excessive heat which could damage valve.
CLAMP
TXV SENSING
BULB
SENSING BULB INSULATION REMOVED FOR CLARITY
C12095
Fig. 18 − TXV Valve and Sensing Bulb
14
COOLING CHARGING CHARTS
How To Use Cooling Charging Charts:
Take the outdoor ambient temperature and read the
suction pressure gauge. Refer to chart to determine what
suction temperature should be. If suction temperature is
high, add refrigerant. If suction temperature is low,
carefully recover some of the charge. Recheck the suction
pressure as charge is adjusted.
SIZE DESIGNATION
A04
A05
A06
A07
D08
D09
D12
D14
NOMINAL TONS
REFERENCE
3
4
5
6
7.5
8.5
10
12.5
EXAMPLE:
Model 50TCQ*D14
Outdoor Temperature . . . . . . . . . . . . . . . . . . 85F (29C)
Suction Pressure . . . . . . . . . . . . . . . . . 140 psig (965 kPa)
Suction Temperature . . . . . . . . . . . . . . . . . . 55 F (13C)
Refer to Fig. 19 through Fig. 26 for Cooling Charging
Charts.
Compressors
Lubrication:
Compressors are charged with the correct amount of oil at
the factory.
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution can result in damage to
components.
The compressor is in a Puron (R−410A) refrigerant
system and uses a polyolester (POE) oil. This oil is
extremely hygroscopic, meaning it absorbs water
readily. POE oils can absorb 15 times as much water
as other oils designed for HCFC and CFC refrigerants.
Avoid exposure of POE oil to the atmosphere. This
exposure to the atmosphere can cause contaminants
that are harmful to R−410A components to form.
Keep POE oil containers closed until ready for use.
15
COOLING CHARGING CHARTS
C09184
Fig. 19 − Cooling Charging Charts− 50TCQA04
C09185
Fig. 20 − Cooling Charging Charts − 50TCQA05
16
C09186
Fig. 21 − Cooling Charging Charts − 50TCQA06
C09187
Fig. 22 − Cooling Charging Charts − 50TCQA07
17
C09188
Fig. 23 − Cooling Charging Charts − 50TCQD08
C09189
Fig. 24 − Cooling Charging Charts − 50TCQD09
18
TIER 1 HP 10.0 TON CHARGING CHART
R410A REFRIGERANT
1172
170
1103
160
1034
965
896
827
758
690
SUCTION LINE PRESSURE (PSIG)
180
SUCTION LINE PRESSURE (KILOPASCALS)
1241
OUTDOOR
TEMP
°F / °C
115 / 46
105 / 41
95
85
75
65
150
140
130
/
/
/
/
35
29
24
18
55 / 13
45 / 7
120
110
100
621
90
552
80
30
40
50
60
70
80
90
SUCTION LINE TEMPERATURE (°F)
-1
4
10
16
21
27
32
SUCTION LINE TEMPERATURE (°C)
48TM501925 Rev B
C150381
Fig. 25 − Cooling Charging Charts − 50TCQD12
C150382
Fig. 26 − Cooling Charging Charts − 50TCQD14, Circuit 1
19
C150383
Fig. 27 − Cooling Charging Charts − 50TCQD14, Circuit 2
20
Replacing the Compressor
!
WARNING
FIRE, EXPLOSION HAZARD
Failure to follow this
warning could result in
death, serious personal
injury and/or property
damage.
Never use air or gases containing oxygen for leak testing
or for operating refrigerant compressors. Pressurized
mixtures of air or gases containing oxygen can lead to an
explosion.
CAUTION
INSTALLATION SITE DAMAGE
Failure to follow this caution can result in damage to
equipment location site.
Puron (R−410A) refrigerant contains polyolester
(POE) oil that can damage the roof membrane.
Caution should be taken to prevent POE oil from
spilling onto the roof surface.
The factory also recommends that the suction and
discharge lines be cut with a tubing cutter instead of
using a torch to remove brazed fittings.
2. Energize the compressor.
3. The suction pressure should drop and the discharge
pressure should rise, as is normal on any start−up.
NOTE: If the suction pressure does not drop and the
discharge pressure does not rise to normal levels:
4. Note that the evaporator fan is probably also rotating
in the wrong direction.
5. Turn off power to the unit.
6. Reverse any two of the three unit power leads.
7. Reapply electrical power to the compressor.
8. The suction pressure should drop and the discharge
pressure should rise which is normal for scroll
compressors on start−up.
9. Replace compressor if suction/discharge pressures are
not within specifications for the specific compressor.
Filter Drier
Replace the Filter Drier whenever refrigerant system is
exposed to atmosphere. Only use factory specified
liquid−line filter driers with working pressures no less
than 650 psig (4482 kPa).
CAUTION
EQUIPMENT DAMAGE
Failure to follow this caution can result in equipment
damage.
Do not install a suction−line filter drier in liquid line.
A liquid−line filter drier designed for use with Puron
refrigerant is required on every unit.
NOTE: Only factory−trained service technicians should
remove and replace compressor units.
Compressors using Puron refrigerant contain a polyolester
(POE) oil. This oil has a high affinity for moisture. Do not
remove the compressor’s tube plugs until ready to insert
the unit suction and discharge tube ends.
Outdoor Fan Location
See Fig. 28.
Compressor Rotation:
1. Shut off unit power supply. Apply lockout/tagout
procedures.
2. Remove condenser−fan assembly (grille, motor, and
fan).
3. Loosen fan hub setscrews.
4. Adjust fan height as shown in Fig. 28.
5. Tighten setscrews to 84 in−lbs (9.5 Nm).
6. Replace condenser−fan assembly.
CAUTION
EQUIPMENT DAMAGE
Failure to follow this caution can result in equipment
damage.
Scroll compressors can only compress refrigerant if
rotating in the right direction. Reverse rotation for
extended times can result in internal damage to the
compressor. Scroll compressors are sealed units and
cannot be repaired on site location.
CONDUIT
NOTE: When the compressor is rotating in the wrong
direction, the unit makes an elevated level of noise and
does not provide cooling.
On 3−phase units with scroll compressors, it is important
to be certain compressor is rotating in the proper
direction. To determine whether or not compressor is
rotating in the proper direction:
1. Connect service gauges to suction and discharge
pressure fittings.
0.14 in +0.0/-0.03
C08448
Fig. 28 − Outdoor Fan Adjustment
Troubleshooting Cooling System
Refer to Table 6, on the following page, for additional
troubleshooting topics.
21
Table 6 – Heating and Cooling Troubleshooting
PROBLEM
Compressor and
Outdoor Fan
Will Not Start.
Compressor Will Not
Start But Outdoor
Fan Runs.
Compressor Cycles
(Other Than
Normally Satisfying
Thermostat).
Compressor Operates
Continuously.
Compressor Makes
Excessive Noise.
Excessive Head
Pressure.
Head Pressure
Too Low.
Excessive Suction
Pressure.
Suction Pressure
Too Low.
CAUSE
Power failure.
Fuse blown or circuit breaker tripped.
Defective thermostat, contactor, transformer,
control relay, or capacitor.
REMEDY
Call power company.
Replace fuse or reset circuit breaker. Determine root cause.
Replace component.
Insufficient line voltage.
Incorrect or faulty wiring.
Thermostat setting too high.
High pressure switch tripped.
Low pressure switch tripped.
Freeze‐up protection thermostat tripped.
Faulty wiring or loose connections in compressor
circuit.
Determine cause and correct.
Check wiring diagram and rewire correctly.
Lower thermostat setting below room temperature.
See problem ``Excessive head pressure.''
Check system for leaks. Repair as necessary.
See problem ``Suction pressure too low.''
Check wiring and repair or replace.
Compressor motor burned out, seized, or
internal overload open.
Determine cause. Replace compressor or allow enough time for
internal overload to cool and reset.
Defective run/start capacitor, overload, start
relay.
Determine cause and replace compressor.
One leg of 3‐phase power dead.
Refrigerant overcharge or undercharge.
Defective compressor.
Insufficient line voltage.
Blocked outdoor coil or dirty air filter.
Defective run/start capacitor, overload, or start
relay.
Replace fuse or reset circuit breaker. Determine cause.
Recover refrigerant, evacuate system, and recharge to nameplate.
Replace and determine cause.
Determine cause and correct.
Determine cause and correct.
Determine cause and replace.
Defective thermostat.
Faulty outdoor‐fan (cooling) or indoor‐fan
(heating) motor or capacitor.
Replace thermostat.
Replace.
Restriction in refrigerant system.
Dirty air filter.
Unit undersized for load.
Thermostat set too low (cooling).
Low refrigerant charge.
Air in system.
Outdoor coil dirty or restricted.
Compressor rotating in the wrong direction.
Locate restriction and remove.
Replace filter.
Decrease load or increase unit size.
Reset thermostat.
Locate leak; repair and recharge.
Recover refrigerant, evacuate system, and recharge.
Clean coil or remove restriction.
Reverse the 3‐phase power leads as described in
Start‐Up.
Dirty outside air or return air filter (heating).
Dirty outdoor coil (cooling).
Refrigerant overcharged.
Air in system.
Condensing air restricted or air short‐cycling.
Low refrigerant charge.
Compressor scroll plates defective.
Restriction in liquid tube.
High heat load.
Compressor scroll plates defective.
Refrigerant overcharged.
Dirty air filter (cooling).
Dirty or heavily iced outdoor coil (heating).
Low refrigerant charge.
Metering device or low side restricted.
Insufficient indoor airflow (cooling mode).
Temperature too low in conditioned area.
Field‐installed filter drier restricted.
Outdoor ambient below 25F (cooling).
Outdoor fan motor(s) not operating (heating).
Replace filter.
Clean coil.
Recover excess refrigerant.
Recover refrigerant, evacuate system, and recharge.
Determine cause and correct.
Check for leaks; repair and recharge.
Replace compressor.
Remove restriction.
Check for source and eliminate.
Replace compressor.
Recover excess refrigerant.
Replace filter.
Clean outdoor coil. Check defrost cycle operation.
Check for leaks; repair and recharge.
Remove source of restriction.
Increase air quantity. Check filter and replace if necessary.
Reset thermostat.
Replace.
Install low‐ambient kit.
Check fan motor operation.
22
CONVENIENCE OUTLETS
!
slots and align with the gasket; tighten the two screws
until snug (do not over-tighten).
4. Mount the weatherproof cover to the backing plate as
shown in Fig. 30.
5. Remove two slot fillers in the bottom of the cover to
permit service tool cords to exit the cover.
6. Check cover installation for full closing and latching.
WARNING
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal
injury or death.
Units with convenience outlet circuits can use
multiple disconnects. Check convenience outlet for
power status before opening unit for service. Locate
its disconnect switch, if appropriate, and open it.
Apply lockout/tagout to this switch, if necessary.
P
TO
TOP
TOP
WET LOCATIONS
Convenience Outlets: Two types of convenience outlets are
offered on 50TCQ models: Non−powered and unit−powered.
Both types provide a 125VAC/15A Ground−Fault Circuit
Interrupter (GFCI) duplex receptacle behind a hinged
waterproof access cover, located on the end panel of the
unit. See Fig. 29.
WET LO
CATIO
NS
GASKET
Pwd-CO
Transformer
Convenience
Outlet
GFCI
GFCI RECEPTACLE
NOT INCLUDED
COVER - WHILE-IN-USE
WEATHERPROOF
BASEPLATE FOR
GFCI RECEPTACLE
C09022
Fig. 30 − Weatherproof Cover Installation
Pwd-CO
Fuse
Switch
Non−powered type — This type requires the field
installation of a general−purpose 125VAC/15AC circuit
powered from a source elsewhere in the building. Observe
national and local codes when selecting wire size, fuse or
breaker requirements and disconnect switch size and
location. Route 125VAC power supply conductors into the
bottom of the utility box containing the duplex receptacle.
Control Box
Access Panel
C08128
Fig. 29 − Convenience Outlet Location
Installing Weatherproof Cover —
A weatherproof while-in-use cover for the factory
installed convenience outlets is now required by UL
standards. This cover cannot be factory-mounted due its
depth. The cover must be installed at unit installation. For
shipment, the convenience outlet is covered with a blank
cover plate.
The weatherproof cover kit is shipped in the unit’s control
box. The kit includes the hinged cover, a backing plate
and gasket.
NOTE: DISCONNECT ALL POWER TO UNIT AND
CONVENIENCE OUTLET. Use approved lockout/tagout
procedures.
1. Remove the blank cover plate at the convenience
outlet; discard the blank cover.
2. Loosen the two screws at the GFCI duplex outlet,
until approximately 1/2-in (13 mm) under screw heads
are exposed.
3. Press the gasket over the screw heads. Slip the
backing plate over the screw heads at the keyhole
Unit−powered type — A unit−mounted transformer is
factory−installed to step−down the main power supply
voltage to the unit to 115VAC at the duplex receptacle.
This option also includes a manual switch with fuse,
located in a utility box and mounted on a bracket behind
the convenience outlet; access is through the unit’s control
box access panel. See Fig. 29.
The primary leads to the convenience outlet transformer
are not factory−connected. Selection of primary power
source is a customer−option. If local codes permit, the
transformer primary leads can be connected at the
line−side terminals on the unit−mounted non−fused
disconnect or HACR breaker switch. This will provide
service power to the unit when the unit disconnect switch
or HACR switch is open. Other connection methods will
result in the convenience outlet circuit being de−energized
when the unit disconnect or HACR switch is open. See
Fig. 31.
Duty Cycle — the unit−powered convenience outlet has a
duty cycle limitation. The transformer is intended to
provide power on an intermittent basis for service tools,
lamps, etc; it is not intended to provide 15 amps loading
for continuous duty loads (such as electric heaters for
overnight use). Observe a 50% limit on circuit loading
above 8 amps (i.e., limit loads exceeding 8 amps to 30
minutes of operation every hour).
23
The CTB contains no software and no logic. But it does
include seven configuration jumpers that are cut to
configure the board to read external optional and
accessory controls, including that the unit is a heat pump.
CUT FOR
REHEAT/HP
W2
W1
W1
Y2
Y2
Y1
Y1
R
R
CO8283
460
240
480
600
PRIMARY
CONNECTIONS
L1: RED +YEL
L2: BLU + GRA
L1: RED
Splice BLU + YEL
L2: GRA
L1: RED
L2: GRA
TRANSFORMER
TERMINALS
H1 + H3
H2 + H4
H1
H2 + H3
H4
T-STAT
R
H1
H2
LPS
LPS
HEAT PUMP CONTROLS
Central Terminal Board
The Central Terminal Board (CTB) is a large printed
circuit board that is located in the center of the unit
control box. This printed circuit board contains multiple
termination strips and connectors to simplify factory
control box wiring and field control connections.
Terminals are clearly marked on the board surface. See
Fig 32.
CIRCUIT 2
CIRCUIT 1
HPS
HPS
C08232
Fig. 32 − Central Terminal Board (CTB)
Table 7 – Jumper Configuration
The Fuse on the powered type — The factory fuse is a
Cooper Bussmann® Fusetron® T−15, non−renewable
screw−in (Edison base) type plug fuse.
Using unit−mounted convenience outlets — Units with
unit−mounted convenience outlet circuits will often
require two disconnects be opened to de−energize all
power to the unit. Treat all units as electrically energized
until the convenience outlet power is also checked and
de−energization is confirmed. Observe National Electrical
Code Article 210, Branch Circuits, for use of convenience
outlets.
W 24V
FOR
I OUT CUT
SMOKE
R
DETECTOR
I
I
N
G
C
SMOKE ALARM
Fig. 31 − Powered Convenience Outlet Wiring
Maintenance — Periodically test the GFCI receptacle by
pressing the TEST button on the face of the receptacle.
This should cause the internal circuit of the receptacle to
trip and open the receptacle. Check for proper grounding
wires and power line phasing if the GFCI receptacle does
not trip as required. Press the RESET button to clear the
tripped condition.
U
N REMOTE
I SHUTDOWN
T
S
H
U
T
D
O
W SMOKE
N SHUTDOWN
DDC
575
CONNECT
AS
CUT FOR
REMOTE
SHUTDOWN
C
U
T
F
O
R
OCCUPANCY
DDC T-STAT
UNIT
VOLTAGE
208,
230
CUT
FOR PMR
PMR
W2
CLO/COMP
G
CONTROL BOARD
G
REHEAT/HP
C
SAT/OAT
X
C
ECON
X
CLO/COMP
CUT FOR
REHEAT/HP
Jumper
JMP1
JMP2
JMP3
JMP4
JMP5
JMP6
JMP7
Control Function
Phase Monitor
Occupancy Control
Smoke Detector Shutdown
Remote Shutdown
Heat Pump / Reheat
Heat Pump / Reheat
Heat Pump / Reheat
Note
50TCQ default: Cut
50TCQ default: Cut
50TCQ default: Cut
Jumpers JMP5, JMP6 and JMP7 are located in notches
across the top of the CTB. See Fig. 32. These jumpers are
factory cut on all heat pump units. Visually check these
jumpers to confirm that they have been cut.
PROTECTIVE CONTROLS
Compressor Protection
Over−current
The compressor has internal line−break motor protection.
24
Over−temperature:
The compressor has an internal protector to protect it
against excessively high discharge gas temperatures.
High Pressure Switch:
The system is provided with a high pressure switch
mounted on the discharge line. The switch is
stem−mounted and brazed into the discharge tube. Trip
setting is 630 psig ± 10 psig (4344 ± 69 kPa) when hot.
Reset is automatic at 505 psig (3482 kPa).
Loss of Charge Switch:
speed, this wheel has a characteristic that causes the fan
shaft load to DECREASE when the static pressure in the
unit−duct system increases and to INCREASE when the
static pressure in the unit−duct system decreases (and fan
airflow rate increases). Motor overload conditions
typically develop when the unit is operated with an access
panel removed, with unfinished duct work, in an
economizer−open mode, or a leak develops in the duct
system that allows a bypass back to unit return opening.
Outdoor Fan Motor Protection:
The outdoor fan motor is internally protected against
over−temperature.
The system is protected against a loss of charge and low
evaporator coil loading condition by a loss of charge
switch located on the liquid line and a freeze protection
thermostat on the indoor coil. The switch is
stem−mounted. Loss of Charge Switch trip setting is
27 psig ± 3 psig (186 ± 21 kPa). Reset is automatic at 44 ±
3 psig (303 ± 21 kPa).
Control Circuit, 24V
Freeze Protection Thermostat trip setting is 30F ± 5F
(−1C ± 3C). Reset is automatic at 45F ± 5F (7C
±3C).
The Commercial Defrost Control Board (DFB)
coordinates thermostat demands for supply fan control, 1
or 2 stage cooling, 2 stage heating, emergency heating and
defrost control with unit operating sequences. The DFB
also provides an indoor fan off delay feature (user
selectable). See Fig. 33 for board arrangement.
Supply (Indoor) Fan Motor Protection:
Disconnect all electrical power and apply appropriate
Lock−out/Tagout procedures when servicing the fan
motor.
Motors are equipped with an over−temperature device
(Thermik), internal line break, external circuit breaker or
electronic controlled circuits for overload protection. All
protection schemes are automatically reset except for
units having the 2−speed indoor fan option (VFD) or
external circuit breakers. These two protection schemes
are classified as manual reset. The type of device depends
on several factors including motor size, voltage and other
options in the unit (i.e. VFD).
The Thermik device is a snap−action over−temperature
protection device that is imbedded in the motor windings.
It is also a pilot−circuit device that is wired into the unit’s
24V control circuit. When this device reaches its trip set
point, it opens the 24V control circuit and causes all unit
operation to stop. This device resets automatically when
the motor windings cool. Do not bypass this device to
correct trouble. Determine the cause of the problem and
correct it.
The
External
motor
overload
device
is
a
specially− calibrated circuit breaker that is UL recognized
as a motor overload controller. It is an over−current
device. When the motor current exceeds the circuit
breaker set point, the device opens all motor power leads
and the motor shuts down. Reset requires a manual reset
at the overload switch. This device (designated IFCB) is
located on the side of the supply fan housing, behind the
fan access panel.
Troubleshooting supply fan motor overload trips —
The supply fan used in the 50TCQ units is a
forward−curved centrifugal wheel. At a constant wheel
The control circuit is protected against over−current
conditions by a circuit breaker mounted on control
transformer TRAN. The Control Circuit is reset manually.
COMMERCIAL DEFROST CONTROL
DIP
Switches
Speed-Up
Jumpers
C09275
Fig. 33 − Defrost Control Board Arrangement
The DFB is located in the 50TCQ’s main control box (see
Fig. 34). All connections are factory−made through
harnesses to the unit’s CTB, to IFC (belt−drive motor) or
to ECM (direct−drive motor), reversing valve solenoids
and to defrost thermostats. Refer to Table 8 for details of
DFB Inputs and Outputs. Detailed unit operating
sequences are provided in the Start−Up section starting on
page 41.
25
C09276
Fig. 34 − Defrost Control Board Location
Table 8 – 50TCQ Defrost Board I/O and Jumper Configurations
Inputs
Point Name
G Fan
Y1 Cool 1
Y2 Cool 2
W1 Heat 1
W2 Heat 2
R Power
C Common
DFT1
DFT 2
Type of I/O
DI, 24Vac
DI, 24Vac
DI, 24Vac
DI, 24Vac
DI, 24Vac
24Vac
24Vac
DI, 24Vac
DI, 24Vac
Connection Pin Number
P2-3
P2-5
P2-4
P2-7
P2-6
P3-1
P3-2
DFT-1 to DFT-1
DFT-2 to DFT-2
Unit Connection
LCTB-G
LCTB-Y1
LCTB-Y2
LCTB-W1
LCTB-W2
CONTL BRD-8
CONTL BRD-4
Note
Type of I/O
DO, 24Vac
DO, 24Vac
DO, 24Vac
DO, 24Vac
DO, 24Vac
DO, 24Vac
DO, 24Vac
24Vac
Connection Pin Number
P3-9
OF
P3-7 to P3-5
P3-6 to P3-4
P3-10
P3-8
E-HEAT
P3-3
Unit Connection
REHEAT-2
OFR
Note
Type of I/O
24Vac
24Vac
Connection Pin Number
P1-1
P1-3
Unit Connection
Connection Pin Number
JMP17
JMP18
Unit Connection
Outputs
Point Name
IFO Fan On
OF OD Fan On
RVS1
RVS2
COMP 1
COMP 2
HEAT 2
COM
Energize in COOL
Energize in COOL
FPT - REHEAT-6
REHEAT-8
HC-1 (TB4-1)
HC-1 (TB4-3)
Configuration
Point Name
Select Jumper
2 Compressor
Note
Use for 50TCQD
Speed−Up Configuration
Point Name
Speed-Up Jumper
Speed-Up Jumper
Type of I/O
Note
Jumper for 1−3 seconds: Factory Test, defrost runs for 9 seconds
Jumper for 5−20 seconds: Forced Defrost, defrost runs for 30 seconds if DFT2 is open
Reversing valve control — The DFB has two outputs for
unit reversing valve control. Operation of the reversing
valves is based on internal logic; this application does not
use an “O” or “B” signal to determine reversing valve
position. Reversing valves are energized during the
cooling stages and the defrost cycle and de−energized
during heating cycles. Once energized at the start of a
cooling stage, the reversing valve will remain energized
until the next heating cycle demand is received. Once
de−energized at the start of a Heating cycle, the reversing
valves will remain de−energized until the next cooling
stage is initiated.
Compressor control — The DFB receives inputs
indicating Stage 1 Cooling, Stage 2 Cooling (sizes 08 −
14) and Stage 1 Heating from the space thermostat or unit
control system (PremierLink® or RTU−OPEN); it
generates commands to start compressors with or without
reversing valve operation to produce Stage 1 Cooling (one
compressor), Stage 2 Cooling (both compressors run) or
26
Stage 1 Heating (both compressors run on 8−14 systems.
The 04−07 systems have only one compressor).
frost and ice) or a 10 minute elapsed period expires,
whichever comes first.
Auxiliary (Electric) Heat control — The 50TCQ unit
can be equipped with one or two auxiliary electric heaters,
to provide a second stage of heating. The DFB will
energize this Heating System for a Stage 2 Heating
Command
(heaters
operate
concurrently
with
compressor(s) in the Stage 1 Heating cycle), for an
Emergency Heating sequence (compressors are off and
only the electric heaters are energized) and also during the
Defrost cycle (to eliminate a “cold blow” condition in the
space).
On sizes 08−14, Circuit 1’s defrost thermostat DFT1
(located on the upper circuit of the outdoor coil on 08−09
size and the outdoor coil with one bend on the 12−14
sizes.) cannot initiate a unit defrost cycle; only DFT2 can
do this. But once Circuit 2 is in defrost, the DFB will
monitor the status of DFT1. If DFT1 closes during a
Circuit 2 defrost cycle, Circuit 1 will also enter a defrost
cycle. Circuit 1’s defrost cycle will end when DFT1 opens
(indicating the upper portion of the outdoor coil is cleared
of frost and ice) or the Circuit 2 defrost cycle is
terminated.
Defrost — The defrost control mode is a time/temperature
sequence. There are two time components: The
continuous run period and the test/defrost cycle period.
The temperature component is provided by Defrost
Thermostat 1 and 2 (DFT1 and DFT2 (A08−D09 only)
mounted on the outdoor coil.
The continuous run period is a fixed time period between
the end of the last defrost cycle (or start of the current
Heating cycle) during which no defrost will be permitted.
This period can be set at 30, 60, 90 or 120 minutes by
changing the positions of DIP switches SW1 and SW2
(see Fig. 35 and Table 9). The default run periods are 60
minutes for unit sizes 04−06, 30 minutes for unit size 07,
90 minutes for unit sizes 08−09 and 60 minutes for unit
sizes 12−14.
At the end of the unit defrost cycle, the unit will be
returned to Heating cycle for a full continuous run period.
If the space heating load is satisfied and compressor
operation is terminated, the defrost control will remember
where the run period was interrupted. On restart in
Heating, the defrost control will resume unit operation at
the point in the run period where it was last operating.
Defrost Thermostats — These are temperature switches
that monitor the surface temperature of the outdoor coil
circuits. These switches are mounted on the liquid tube
exiting the outdoor coil heating circuits. These switches
close on temperature drop at 30F (−1C) and reset open
on temperature rise at 80F (27C).
Indoor Fan Off Delay — The DFB can provide a 60 sec
delay on Indoor Fan Off if the thermostat’s fan selector
switch is set on AUTO control. DIP Switch SW3 on the
DFB selects use of the fan off time delay feature. Setting
SW3 in the OPEN position turns the Fan Off Delay
feature on; setting SW3 in the CLOSED position disables
this feature. The delay period begins when Y1 demand or
W1 demand by the space thermostat is removed.
C09283
Fig. 35 − DIP Switch Settings — Defrost Board
At the end of the continuous run period, the defrost
control will test for a need to defrost. On unit sizes 04−07
(single compressor designs), DFT1 controls the start and
termination of the defrost cycle. If DFT1 is still open, the
defrost test/run window is closed and the control repeats
the continuous run period. If DFT1 is closed, the defrost
cycle is initiated. The defrost period will end when DFT1
opens (indicating the outdoor coil has been cleared of
frost and ice) or a 10 minute elapsed period expires,
whichever comes first.
Defrost Speedup Functions — The DFB permits the
servicer to speed−up the defrost cycle. There are two
speed−up sequences: relative speed−up and an immediate
forced defrost. Speed−up sequences are initiated by
shorting jumper wires JMP17 and JMP18 together (see
Fig. 33); use a flat−blade screwdriver.
Shorting the jumpers for a period of 1 to 3 seconds
reduces the defrost timer periods by a factor of 0.1
sec/minute. (For example, the 90 minute run period is
reduced to 9 seconds) The DFB will step the unit through
a Heating cycle and a Defrost cycle using these reduced
time periods. This mode ends after the Defrost cycle.
On unit sizes 08 and 14 (two circuit designs), DFT2
(located on the bottom circuit of the outdoor coil on the
08−09 size and the outdoor coil with two bends on the
12−14 sizes) controls the start and termination of the
defrost cycle. If DFT2 is still open, the defrost test/run
window is closed and the control repeats the continuous
run period. If DFT2 is closed, the defrost cycle is initiated
in Circuit 2. The defrost period will end when DFT2
opens (indicating the outdoor coil has been cleared of
27
Table 9 – Dip Switch Position
Switch No.
1
2
0
1
90 minutes
0
2
1
1
1
1
2
1
0
60 minutes
ELECTRIC HEATERS
2
0
30 minutes
Shorting the jumpers for a period of 5 to 20 secs bypasses
the remaining continuous run period and places the unit in
a Forced Defrost mode. If the controlling DFT is closed
when this mode is initiated, the unit will complete a
normal defrost period that will terminate when the
controlling DFT opens or the 10 minute defrost cycle limit
is reached. If the controlling DFT is open when this mode
is initiated, the Defrost cycle will run for 30 secs. Both
modes end at the end of the Defrost cycle.
1
3
1
0
120 minutes
On
Off
Fan Delay
Unit heaters are marked with Heater Model Numbers.
However, heaters are ordered as and shipped in cartons
marked with a corresponding heater Sales Package part
number. See Table 10 for correlation between heater
Model Number and Sales Package part number.
NOTE: The value in position 9 of the part number differs
between the sales package part number (value is 1) and a
bare heater model number (value is 0).
DISCONNECT
MOUNTING
LOCATION
EMT OR RIGID CONDUIT SINGLE
(FIELD-SUPPLIED)
POINT BOX
CENTER MANUAL RESET
POST
LIMIT SWITCH
HEATER
COVERS
50TCQ units can be equipped with field−installed
accessory electric heaters. The heaters are modular in
design, with heater frames holding open coil resistance
wires strung through ceramic insulators, line−break limit
switches and a control contactor. One or two heater
modules can be used in a unit.
DISCONNECT MOUNTING
LOCATION
SINGLE POINT
MAIN
BRACKET AND BOX
HEATER
HEATER
HEATER
CONTROL CONDUIT
MOUNTING
MODULE
MODULE
MOUNTING
BOX
DRIP BOOT
SCREW
(LOCATION 1) (LOCATION 2) BRACKET
CONTROL WIRE TERMINAL BLOCK
C08134
Fig. 37 − Typical Component Location
UNIT BLOCK-OFF
PANEL
OUTDOOR
ACCESS PANEL
INDOOR
ACCESS
PANEL
C08133
Fig. 36 − Typical Access Panel Location (3−6 Ton)
TRACK
Heater modules are installed in the compartment below
the indoor (supply) fan outlet. Access is through the
indoor access panel. Heater modules slide into the
compartment on tracks along the bottom of the heater
opening. See Fig. 36, Fig. 37 and Fig. 38.
Not all available heater modules can be used in every unit.
Use only those heater modules that are UL listed for use
in a specific size unit. Refer to the label on the unit
cabinet re approved heaters.
FLANGE
C08135
Fig. 38 − Typical Module Installation
28
Table 10 – Heater Model Number
Bare Heater Model Number
C
R
H
E
A
T
E
R
0
0
1
A
0
0
Heater Sales Package PNO
Includes:
Bare Heater
Carton and packing materials
Installation sheet
C
R
H
E
A
T
E
R
1
0
1
A
0
0
Single Point Boxes and Supplementary Fuses — When
the unit MOCP device value exceeds 60A, unit−mounted
supplementary fuses are required for each heater circuit.
These fuses are included in accessory Single Point Boxes,
with power distribution and fuse blocks. The single point
box will be installed directly under the unit control box,
just to the left of the partition separating the indoor
section (with electric heaters) from the outdoor section.
The Single Point Box has a hinged access cover. See
Fig. 39.
21
11
23
13
Completing Heater Installation
Single
Point Box
Field Power Connections — Tap conductors must be
installed between the base unit’s field power connection
lugs and the Single Point Box (with or without fuses). See
Fig. 39. Refer to unit wiring schematic. Use copper wire
only. For connection using the single point box without
fuses, connect the field power supply conductors to the
heater power leads and the field−supplied tap conductors
inside the Single Point Box. Use UL approved pressure
connectors (field−supplied) for these splice joints.
21 23
11 13
Field Power
Connections
pilot− circuit/manual reset limit switch to protect the unit
against over−temperature situations.
Line−break/auto−reset limit switches are mounted on the
base plate of each heater module. See Fig. 40. These are
accessed through the indoor access panel. Remove the
switch by removing two screws into the base plate and
extracting the existing switch.
Pilot−circuit/manual reset limit switch is located in the
side plate of the indoor (supply) fan housing. See Fig. 37
and Fig 40.
ALLIED
PAC
O
R
P
.
MO
DELNO.O
ERI
ALNO. D
ISTED
AIR
NDITIONING
1 22.2
UIP
ACCESS
23 3
346N.
P/ 2
N−5610
−4 REV
Hinged
Cover
PILOT-CIRCUIT/MANUAL
RESET LIMIT SWITCH
C11490
Fig. 39 − Typical Single Point Installation
LINE-BREAK
LIMIT SWITCHES
23
21
13
11
On 50TCQ units, all fuses are 60A. Single point boxes
containing fuses for 208/230V applications use UL Class
RK5 250V fuses (Bussmann FRNR 60 or Shawmut TR
60R). Single point boxes for 460V and 575V applications
use UL Class T 600V fuses (Bussmann JJS 60 or
Shawmut A6T 60). (Note that all heaters are qualified for
use with a 60A fuse, regardless of actual heater ampacity,
so only 60A fuses are necessary.)
On 07 − 14 size units, unit heater applications not
requiring supplemental fuses require a special Single
Point Box without any fuses. Connect power supply
conductors to heater conductors and field−supplied base
unit power tap leads (see text below re: “Completing
Heater Installation”) inside the empty Single Point Box
using UL−approved connectors.
Safety Devices — Electric heater applications use a
combination of line−break/auto−reset limit switches and a
ALLIEDPAC
O
RP
.
MODELNO. OD
ERIA
LNO.
22.2
ISTED
AIR
1
NDITIONING
UIP
23 3
ACCESS
346N.
P/ N
2− 5610
−4 REV
C11489
Fig. 40 − Typical Location of Heater Limit Switches
(3−phase heater shown)
Low−Voltage Control Connections — Pull the
low−voltage control leads from the heater module(s). The
50TCQ units use a various number of control wires, colors
and terminal boards depending on voltage and unit size.
29
See Fig. 41 through Fig. 44 and the unit wiring diagram
for proper placement.
CB
24V
3.2 AMPS
TRAN1 FROM POWER SCHEMATIC
24V
GRN/
YEL
BRN
BRN
24V
RED
5
TRAN2 FROM POWER SCHEMATIC
CB
24V
3.2 AMPS
RED
BRN
GRN/
YEL
ORN
1 EHR 0
BRN
VIO
1 OFR 0
BRN
3
BRN
24V
BRN
24V
EHR
RED
8
6
ORN
ORN
NOTE 4
AND 6
RED
BLK
TB4
ELECTRIC
BRN
HEAT(ACCESSORY)
SEE HEATER LABEL DIAGRAM
FPT
BLK
BRN
BRN
C10561
Fig. 43 − TB4 Wiring (HP Only)
NOTE:
Optional Outdoor Temperature Control
at One Heater Stage –
Move heater wire to this terminal and
connect outdoor temperature switch
between 2nd and 3rd terminals.
W2 Use
C11554
Fig. 41 − Accessory Electric Heater Control
Connections (HP−2, Size 06, 575V Only)
R Use
C Use
C10604
Fig. 44 − TB4 Terminal Use (HP Only)
DEFROST
BOARD
E-HEAT
ORN
P3-3
BRN
TB4
ORN
BRN
1
3
VIO
BRN BRN
VIO
Field
Connections
Elec Htr
VIO HR2
VIO
HR1
BRN
BRN
HR1: On Heater 1 in Position #1
HR2: On Heater 2 in Position #2 (if installed)
C09013
Fig. 42 − Accessory Electric Heater Control
Connections (HP−1 Except Size 12 and 121, HP−2
Except Size 12)
30
SMOKE DETECTORS
Sensor
Smoke detectors are available as factory−installed options
(FIOP) on 50TCQ models. Smoke detectors can be
specified for Supply Air only or for Return Air with or
without economizer or in combination of Supply Air and
Return Air. Return Air smoke detectors are arranged for
vertical return configurations only. All components
necessary for operation are factory−provided and
mounted. The unit is factory−configured for immediate
smoke detector shutdown operation; additional wiring or
modifications to unit terminal board can be necessary to
complete the unit and smoke detector configuration to
meet project requirements.
System
The sensor (see Fig. 46) includes a plastic housing, a
printed circuit board, a clear plastic cover, a sampling
tube inlet and an exhaust tube. The sampling tube (when
used) and exhaust tube are attached during installation.
The sampling tube varies in length depending on the size
of the rooftop unit. The clear plastic cover permits visual
inspections without having to disassemble the sensor. The
cover attaches to the sensor housing using four captive
screws and forms an airtight chamber around the sensing
electronics. Each sensor includes a harness with an RJ45
terminal for connecting to the controller. Each sensor has
four LEDs (for Power, Trouble, Alarm and Dirty) and a
manual test/reset button (on the left−side of the housing).
The smoke detector system consists of a four−wire
controller and one or two sensors. Its primary function is
to shut down the rooftop unit in order to prevent smoke
from circulating throughout the building. It is not to be
used as a life saving device.
Duct Smoke Sensor
Controller
Exhaust Tube
Exhaust Gasket
The controller (see Fig. 45) includes a controller housing,
a printed circuit board, and a clear plastic cover. The
controller can be connected to one or two compatible duct
smoke sensors. The clear plastic cover is secured to the
housing with a single captive screw for easy access to the
wiring terminals. The controller has three LEDs (for
Power, Trouble and Alarm) and a manual test/reset button
(on the cover face).
Sensor Housing
and Electronics
See Detail A
Intake
Gasket
Cover Gasket
(ordering option)
TSD-CO2
(ordering option)
Sensor Cover
Plug
Sampling Tube
(ordered separately)
Coupling
Detail A
Magnetic
Test/Reset
Switch
Duct Smoke Sensor
Controller
Alarm
Trouble
Conduit Nuts
(supplied by installer)
Power
Dirty
C08209A
Fig. 46 − Smoke Detector Sensor
Conduit Support Plate
Controller Housing
and Electronics
Terminal Block Cover
Conduit Couplings
(supplied by installer)
Controller Cover
Fastener
(2X)
Cover Gasket
(ordering option)
Alarm
Trouble
Power
Test/Reset
Switch
C08208A
Fig. 45 − Controller Assembly
Air is introduced to the duct smoke detector sensor’s
sensing chamber through a sampling tube that extends into
the HVAC duct and is directed back into the ventilation
system through a (shorter) exhaust tube. The difference in
air pressure between the two tubes pulls the sampled air
through the sensing chamber. When a sufficient amount of
smoke is detected in the sensing chamber, the sensor
signals an alarm state and the controller automatically
takes the appropriate action to shut down fans and
blowers, change over air handling systems, notify the fire
alarm control panel, etc.
The sensor uses a process called Differential Sensing to
prevent gradual environmental changes from triggering
false alarms. A rapid change in environmental conditions,
such as smoke from a fire, causes the sensor to signal an
alarm state but dust and debris accumulated over time
does not.
31
For installations using two sensors, the duct smoke
detector does not differentiate which sensor signals an
alarm or trouble condition.
Smoke Detector Locations
Supply Air — The Supply Air smoke detector sensor is
located to the left of the unit’s indoor (supply) fan. See
Fig. 47. Access is through the fan access panel. There is
no sampling tube used at this location. The sampling tube
inlet extends through the side plate of the fan housing
(into a high pressure area). The controller is located on a
bracket to the right of the return filter, accessed through
the lift−off filter panel.
Return Air with Economizer — The sampling tube is
inserted through the side plates of the economizer
housing, placing it across the return air opening on the
unit base pan. See Fig. 49. The holes in the sampling tube
face downward, into the return air stream. The sampling
tube is connected via tubing to the return air sensor that is
mounted on a bracket high on the partition between return
filter and controller location. (This sensor is shipped in a
flat−mounting location. Installation requires that this
sensor be relocated to its operating location and the tubing
to the sampling tube be connected. See “Completing
Installation of Return Air Smoke Sensor” for installation
steps.)
Return Air
Sampling Tube
SMOKE DETECTOR
SENSOR
C08245
Fig. 47 − Typical Supply Air Smoke Detector Sensor
Location
Return Air without Economizer — The sampling tube is
located across the return air opening on the unit base pan.
See Fig. 48. The holes in the sampling tube face
downward, into the return air stream. The sampling tube is
connected by tubing to the return air sensor that is
mounted on a bracket high on the partition between return
filter and controller location. (This sensor is shipped in a
flat−mounting location. Installation requires that this
sensor be relocated to its operating location and the tubing
to the sampling tube be connected. See “Completing
Installation of Return Air Smoke Sensor” for installation
steps.)
C08129
Fig. 49 − Return Air Sampling Tube Location
Completing Installation of Return Air Smoke
Sensor
FLEXIBLE EXHAUST TUBE
SCREWS
RETURN AIR
DETECTOR MODULE
(Shipping position
shown)*
CONTROLLER
MODULE
SAMPLE TUBE
C12049
Fig. 50 − Return Air Detector Shipping Position
RETURN AIR DETECTOR
SAMPLING TUBE
1. Unscrew the two screws holding the Return Air
Sensor detector plate. See Fig. 50. Save the screws.
2. Remove the Return Air Sensor and its detector plate.
*RA detector must be moved from shipping
position to operating position by installer
C07307
Fig. 48 − Typical Return Air Detector Location
32
3. Rotate the detector plate so the sensor is facing
outwards and the sampling tube connection is on the
bottom. See Fig. 51.
4. Screw the sensor and detector plate into its operating
position using screws from Step 1. Make sure the
sampling tube connection is on the bottom and the
exhaust tube is on the top. See Fig. 51.
5. Connect the flexible tube on the sampling inlet to the
sampling tube on the base pan.
6. For units with an economizer, the sampling tube is
integrated into the economizer housing but the
connection of the flexible tubing to the sampling tube
is the same.
FIOP Smoke Detector Wiring and Response
All units: FIOP smoke detector is configured to
automatically shut down all unit operations when smoke
condition is detected. See Fig. 52, Typical Smoke
Detector System Wiring.
Highlight C: 24V power signal via ORN lead is removed
at Smoke Detector input on CTB (Control Terminal
Board); all unit operations cease immediately.
PremierLink Control: Unit operating functions (fan,
cooling and heating) are terminated as described above. In
addition:
Highlight D: On smoke alarm condition, the smoke
detector NO Alarm contact will close, supplying 24V
power to GRA conductor.
Highlight E: GRA lead at Smoke Alarm input on CTB
provides 24V signal to FIOP DDC control.
PremierLink: This signal is conveyed to PremierLink
FIOPs TB1 at terminal TB1−6 (BLU lead). This signal
initiates the FSD sequence by the PremierLink control.
FSD status is reported to connected CCN network.
Highlight A: JMP 3 is factory−cut, transferring unit
control to smoke detector.
RTU−OPEN: The 24V signal is conveyed to
RTU−OPEN’s J1−10 input terminal. This signal initiates
the FSD sequence by the RTU−OPEN control. FSD status
is reported to connected BAS network.
Highlight B: Smoke detector NC contact set will open on
smoke alarm condition, de−energizing the ORN
conductor.
Using Remote Logic: Five conductors are provided for
field use (see Highlight F in Fig. 52) for additional
annunciation functions.
Additional Application Data — Refer to Catalog No.
HKRNKA−1XA for discussions on additional control
features of these smoke detectors including multiple unit
coordination. See Fig. 52.
RETURN AIR SENSOR
(Operating Position Shown)
C12050
Fig. 51 − Return Air Sensor Operating Position
33
B
D
C
F
E
A
C08246
Fig. 52 − Typical Smoke Detector System Wiring
Sensor and Controller Tests
Controller Alarm Test
Sensor Alarm Test
The controller alarm test checks the controller’s ability to
initiate and indicate an alarm state.
The sensor alarm test checks a sensor’s ability to signal an
alarm state. This test requires that you use a field provided
SD−MAG test magnet.
NOTICE
OPERATIONAL TEST ALERT
Failure to follow this ALERT can result in an
unnecessary evacuation of the facility.
This test places the duct detector into the alarm state.
Unless part of the test, disconnect all auxiliary
equipment from the controller before performing the
test. If the duct detector is connected to a fire alarm
system, notify the proper authorities before
performing the test.
NOTICE
OPERATIONAL TEST ALERT
Failure to follow this ALERT can result in an
unnecessary evacuation of the facility.
This test places the duct detector into the alarm state.
Unless part of the test, disconnect all auxiliary
equipment from the controller before performing the
test. If the duct detector is connected to a fire alarm
system, notify the proper authorities before
performing the test.
Controller Alarm Test Procedure
1. Press the controller’s test/reset switch for seven
seconds.
2. Verify that the controller’s Alarm LED turns on.
3. Reset the sensor by pressing the test/reset switch for
two seconds.
4. Verify that the controller’s Alarm LED turns off.
Sensor Alarm Test Procedure
1. Hold the test magnet where indicated on the side of
the sensor housing for seven seconds.
2. Verify that the sensor’s Alarm Light Emitting Diode
(LED) turns on.
3. Reset the sensor by holding the test magnet against
the sensor housing for two seconds.
4. Verify that the sensor’s Alarm LED turns off.
34
Dirty Controller Test
NOTICE
The dirty controller test checks the controller’s ability to
initiate a dirty sensor test and indicate its results.
OPERATIONAL TEST ALERT
Failure to follow this ALERT can result in an
unnecessary evacuation of the facility.
Changing the dirty sensor test operation will put the
detector into the alarm state and activate all automatic
alarm responses. Before changing dirty sensor test
operation, disconnect all auxiliary equipment from the
controller and notify the proper authorities if
connected to a fire alarm system.
NOTICE
OPERATIONAL TEST ALERT
Failure to follow this ALERT can result in an
unnecessary evacuation of the facility.
Pressing the controller’s test/reset switch for longer
than seven seconds will put the duct detector into the
alarm state and activate all automatic alarm responses.
Changing the Dirty Sensor Test
Dirty Controller Test Procedure
1. Press the controller’s test/reset switch for two
seconds.
2. Verify that the controller’s Trouble LED flashes.
Dirty Sensor Test
The dirty sensor test provides an indication of the sensor’s
ability to compensate for gradual environmental changes.
A sensor that can no longer compensate for environmental
changes is considered 100% dirty and requires cleaning or
replacing. You must use a field provided SD−MAG test
magnet to initiate a sensor dirty test. The sensor’s Dirty
LED indicates the results of the dirty test as shown in
Table 11.
By default, sensor dirty test results are indicated by:
The sensor’s Dirty LED flashing.
The controller’s Trouble LED flashing.
The controller’s supervision relay contacts toggle.
The operation of a sensor’s dirty test can be changed so
that the controller’s supervision relay is not used to
indicate test results. When two detectors are connected to
a controller, sensor dirty test operation on both sensors
must be configured to operate in the same manner.
Configure the Dirty Sensor Test Operation:
1. Hold the test magnet where indicated on the side of
the sensor housing until the sensor’s Alarm LED turns
on and its Dirty LED flashes twice (approximately 60
seconds).
2. Reset the sensor by removing the test magnet then
holding it against the sensor housing again until the
sensor’s Alarm LED turns off (approximately 2
seconds).
NOTICE
OPERATIONAL TEST ALERT
Failure to follow this ALERT can result in an
unnecessary evacuation of the facility.
Holding the test magnet against the sensor housing for
more than seven seconds will put the duct detector
into the alarm state and activate all automatic alarm
responses.
Remote Station Test
The remote station alarm test checks a test/reset station’s
ability to initiate and indicate an alarm state.
NOTICE
OPERATIONAL TEST ALERT
Failure to follow this ALERT can result in an
unnecessary evacuation of the facility.
This test places the duct detector into the alarm state.
Unless part of the test, disconnect all auxiliary
equipment from the controller before performing the
test. If the duct detector is connected to a fire alarm
system, notify the proper authorities before
performing the test.
Table 11 – Dirty LED Test
FLASHES
1
2
3
4
DESCRIPTION
0-25% dirty. (Typical of a newly installed detector)
25-50% dirty
51-75% dirty
76-99% dirty
Dirty Sensor Test Procedure:
1. Hold the test magnet where indicated on the side of
the sensor housing for two seconds.
2. Verify that the sensor’s Dirty LED flashes.
35
NOTICE
12
Smoke Detector Controller
1
OPERATIONAL TEST ALERT
Failure to follow this ALERT can result in an
unnecessary evacuation of the facility.
Holding the test magnet to the target area for longer
than seven seconds will put the detector into the alarm
state and activate all automatic alarm responses.
TB3
3
1
−
2
+
Auxiliary
equipment
14
SD-TR14
Supervision relay
contacts [3]
Trouble
5
13
SD−TRK4 Remote Alarm Test Procedure:
18 Vdc (+)
1. Turn the key switch to the RESET/TEST position for
seven seconds.
2. Verify that the test/reset station’s Alarm LED turns
on.
3. Reset the sensor by turning the key switch to the
RESET/TEST position for two seconds.
4. Verify that the test/reset station’s Alarm LED turns
off.
Wire must be
added by installer
Power
19
4
15
1
2
3
Alarm
Reset/Test
20
18 Vdc (−)
2
C08247
Fig. 53 − Remote Test/Reset Station Connections
Remote Test/Reset Station Dirty Sensor Test
NOTICE
The test/reset station dirty sensor test checks the test/reset
station’s ability to initiate a sensor dirty test and indicate
the results. It must be wired to the controller as shown in
Fig. 53 and configured to operate the controller’s
supervision relay. For more information, see “Changing
the Dirty Sensor Test.”
OPERATIONAL TEST ALERT
Failure to follow this ALERT can result in an
unnecessary evacuation of the facility.
Holding the test magnet to the target area for longer
than seven seconds will put the detector into the alarm
state and activate all automatic alarm responses.
Dirty Sensor Test Using an SD−TRK4 Test Set:
1. Turn the key switch to the RESET/TEST position for
two seconds.
2. Verify that the test/reset station’s Trouble LED
flashes.
Table 12 – Detector Indicators
CONTROL OR INDICATOR
Magnetic test/reset switch
Alarm LED
Trouble LED
Dirty LED
Power LED
DESCRIPTION
Resets the sensor when it is in the alarm or trouble state. Activates or tests the sensor when it is in
the normal state.
Indicates the sensor is in the alarm state.
Indicates the sensor is in the trouble state.
Indicates the amount of environmental compensation used by the sensor
(flashing continuously = 100%)
Indicates the sensor is energized.
Detector Cleaning
NOTICE
Cleaning the Smoke Detector:
OPERATIONAL TEST ALERT
Failure to follow this ALERT can result in an
unnecessary evacuation of the facility.
If the smoke detector is connected to a fire alarm
system, first notify the proper authorities that the
detector is undergoing maintenance then disable the
relevant circuit to avoid generating a false alarm.
Clean the duct smoke sensor when the Dirty LED is
flashing continuously or sooner if conditions warrant.
36
1. Disconnect power from the duct detector then remove
the sensor’s cover. See Fig. 54.
2. Using a vacuum cleaner, clean compressed air, or a
soft bristle brush, remove loose dirt and debris from
inside the sensor housing and cover. Use isopropyl
alcohol and a lint−free cloth to remove dirt and other
contaminants from the gasket on the sensor’s cover.
3. Squeeze the retainer clips on both sides of the optic
housing then lift the housing away from the printed
circuit board.
4. Gently remove dirt and debris from around the optic
plate and inside the optic housing.
5. Replace the optic housing and sensor cover.
6. Connect power to the duct detector then perform a
sensor alarm test.
Sampling
tube
(100% dirty).
A wiring fault between a sensor and the controller is
detected.
An internal sensor fault is detected upon entering the
trouble state:
The contacts on the controller’s supervisory relay
switch positions. See Fig. 55.
If a sensor trouble, the sensor’s Trouble LED and the
controller ’s Trouble LED turn on.
If 100% dirty, the sensor’s Dirty LED turns on and the
controller ’s Trouble LED flashes continuously.
If a wiring fault between a sensor and the controller, the
controller ’s Trouble LED turns on but not the sensor’s.
Trouble
Alarm
HVAC duct
Power
Sensor
housing
Test/reset
switch
Airflow
Optic
plate
C07298
Retainer
clip
Fig. 55 − Controller Assembly
Optic
housing
C07305
Fig. 54 − Sensor Cleaning Diagram
NOTE: All troubles are latched by the duct smoke
detector. The trouble condition must be cleared and then
the duct smoke detector must be reset in order to restore it
to the normal state.
Indicators
Resetting Alarm and Trouble Condition Trips
Normal State:
Manual reset is required to restore smoke detector systems
to Normal operation. For installations using two sensors,
the duct smoke detector does not differentiate which
sensor signals an alarm or trouble condition. Check each
sensor for Alarm or Trouble status (indicated by LED).
Clear the condition that has generated the trip at this
sensor. Then reset the sensor by pressing and holding the
reset button (on the side) for 2 seconds. Verify that the
sensor’s Alarm and Trouble LEDs are now off. At the
controller, clear its Alarm or Trouble state by pressing and
holding the manual reset button (on the front cover) for 2
seconds. Verify that the controller’s Alarm and Trouble
LEDs are now off. Replace all panels.
The smoke detector operates in the normal state in the
absence of any trouble conditions and when its sensing
chamber is free of smoke. In the normal state, the Power
LED on both the sensor and the controller are on and all
other LEDs are off.
Alarm State:
The smoke detector enters the alarm state when the
amount of smoke particulate in the sensor’s sensing
chamber exceeds the alarm threshold value. See Table 12.
Upon entering the alarm state:
The sensor’s Alarm LED and the controller’s Alarm
LED turn on.
The contacts on the controller’s two auxiliary relays
switch positions.
The contacts on the controller’s alarm initiation relay
close.
The controller’s remote alarm LED output is activated
(turned on).
The controller’s high impedance multiple fan shutdown
control line is pulled to ground Trouble state.
The SuperDuct duct smoke detector enters the trouble
state under the following conditions:
A sensor’s cover is removed and 20 minutes pass before
it is properly secured.
A sensor’s environmental compensation limit is reached
Troubleshooting
Controller’s Trouble LED is On:
1. Check the Trouble LED on each sensor connected to
the controller. If a sensor’s Trouble LED is on,
determine the cause and make the necessary repairs.
2. Check the wiring between the sensor and the
controller. If wiring is loose or missing, repair or
replace as required.
Controller’s Trouble LED is Flashing:
1. One or both of the sensors is 100% dirty.
2. Determine which Dirty LED is flashing then clean
that sensor assembly as described in the detector
cleaning section.
37
Sensor’s Trouble LED is On:
1. Check the sensor’s Dirty LED. If it is flashing, the
sensor is dirty and must be cleaned.
2. Check the sensor’s cover. If it is loose or missing,
secure the cover to the sensor housing.
3. Replace sensor assembly.
Remote Test/Reset Station’s Trouble LED Does Not
flash When Performing a Dirty Test, But the Controller’s Trouble LED Does:
1. Verify that the remote test/station is wired as shown
in Fig. 53. Repair or replace loose or missing wiring.
2. Configure the sensor dirty test to activate the
controller ’s supervision relay. See “To Configure the
Dirty Sensor Test Operation” for details.
Sensor’s Power LED is Off:
1. Check the controller’s Power LED. If it is off,
determine why the controller does not have power
and make the necessary repairs.
2. Check the wiring between the sensor and the
controller. If wiring is loose or missing, repair or
replace as required.
Controller’s Power LED is Off:
1. Ensure the circuit supplying power to the controller is
operational. If not, make sure JP2 and JP3 are set
correctly on the controller before applying power.
2. Verify that power is applied to the controller’s supply
input terminals. If power is not present, replace or
repair wiring as required.
Sensor’s Trouble LED is On, But the Controller’s
Trouble LED is OFF:
Remove JP1 on the controller.
Supply Air Temperature (SAT) Sensor — On
FIOP−equipped 50TCQ unit, the unit is supplied with a
supply−air temperature (SAT) sensor (p/n:33ZCSENSAT).
This sensor is a tubular probe type, approx 6−inches (12.7
mm) in length. It is a nominal 10−k ohm thermistor. See
PremierLinkt Installation, Start−Up and Configuration
Instructions. for temperature−resistance characteristic.
PREMIERLINKE CONTROL
The PremierLink controller (see Fig. 56) is compatible
with Carrier Comfort Network (CCN) devices. This
control is designed to allow users the access and ability to
change factory−defined settings, thus expanding the
function of the standard unit control board. CCN service
access tools include System Pilot, Touch Pilot and
Service Tool. Standard tier display tools Navigator and
Scrolling Marquee are not suitable for use with latest
PremierLink controller (Version 2.x).
The PremierLink control is factory−mounted in the
50TCQ unit’s main control box to the left of the CTB.
Factory wiring is completed through harnesses connected
to the LVTB. Field connections are made at a 16−pole
terminal block (TB1) located on the bottom shelf of the
unit control box in front of the PremierLink controller The
factory−installed PremierLink control includes the
supply−air temperature (SAT) sensor. The outdoor air
temperature (OAT) sensor is included in the
FIOP/accessory EconoMi$er 2 package.
Refer to Fig. 56 for PremierLink connection locations.
NOTE: Refer to PremierLinkt Installation, Start−Up
and Configuration Instructions. Have a copy of this
manual available at unit start−up.
C08199
Fig. 56 − PremierLink Controller
38
RTU−OPEN CONTROL SYSTEM
RTU−Open Controller
The RTU−OPEN controller is an integrated component of
the Carrier rooftop unit. Its internal application
programming provides optimum performance and energy
efficiency. RTU−OPEN enables the unit to run in 100%
stand−alone control mode, Carrier’s I−Vu Open network,
or a Third Party Building Automation System (BAS).
On−board DIP switches allow you to select your protocol
(and baud rate) of choice among the four most popular
protocols in use today: BACnet, Modbus, Johnson N2 and
LonWorks. (See Fig. 57.)
Carrier’s diagnostic display tools such as Field Assistant
BACview6 Handheld or Virtual BACview can be used
with the RTU−OPEN controller. Access is available via a
5−pin J12 access port.
then feed the wires thorough the raceway to the
RTU-OPEN. Connect the wires to the removable Phoenix
connectors and then reconnect the connectors to the board.
See Fig. 57.
IMPORTANT: Refer to the specific sensor or accessory
instructions for its proper installation and for rooftop unit
installation refer to base unit installation instructions and
the unit’s wiring diagrams.
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury, death and/or equipment damage.
Disconnect all electrical power to the unit and use
appropriate Lock−out/Tagout procedures before wiring
the RTU−OPEN controller.
SENSORY/ACCESSORY INSTALLATION
There are a variety of sensors and accessories available
for the RTU-OPEN. Some of these can be factory or field
installed, while others are only field installable. The
RTU-OPEN controller can also require connection to a
building network system or building zoning system. All
field control wiring that connects to the RTU-OPEN must
be routed through the raceway built into the corner post of
the unit or secured to the unit control box with electrical
conduit. The unit raceway provides the UL required
clearance between high and low-voltage wiring. Pass the
control wires through the hole provided in the corner post,
WARNING
ADDITIONAL RTU−OPEN INSTALLATION
AND TROUBLESHOOTING
Refer to the following manuals: “Controls, Start−up,
Operation and Troubleshooting Instructions,” and “RTU
Open Installation and Start−up Guide” for additional
installation, wiring and troubleshooting information for
the RTU−OPEN Controller. Have a copy of this manual
available at unit start−up.
39
C10818
Fig. 57 − RTU−OPEN Control Module
40
PRE−START−UP
START−UP
!
2. Read and follow instructions on all WARNING,
CAUTION, and INFORMATION labels attached to,
or shipped with, unit.
WARNING
!
PERSONAL INJURY HAZARD
Failure to follow this warning could result in personal
injury or death.
PERSONAL INJURY AND ENVIRONMENTAL
HAZARD
Failure to follow this warning could result in personal
injury or death.
3. Follow recognized safety practices and wear
approved Personal Protective Equipment (PPE),
including goggles and gloves when checking or
servicing refrigerant system.
4. Do not use a torch to remove any component.
System contains oil and refrigerant under
pressure. To remove a component, wear PPE and
proceed as follows:
a. Shut off all electrical power to unit. Apply
applicable Lock−out/Tagout procedures.
b. Recover refrigerant to relieve all pressure
from system using both high−pressure and
low pressure ports.
c. Do not use a torch. Cut component connection tubing with tubing cutter and remove
component from unit.
d. Carefully un−sweat remaining tubing stubs
when necessary. Oil can ignite when exposed
to torch flame.
5. Do not operate compressor or provide any electric
power to unit unless compressor terminal cover is
in place and secured.
6. Do not remove compressor terminal cover until
all electrical power is disconnected and approved
Lock−out/Tagout procedures are in place.
7. Relieve all pressure from system before touching
or disturbing anything inside terminal box
whenever refrigerant leak is suspected around
compressor terminals.
8. Never attempt to repair a soldered connection
while refrigerant system is under pressure.
!
Relieve pressure and recover all refrigerant before
system repair or final unit disposal.
Wear safety glasses and leather gloves when handling
refrigerants.
Keep torches and other ignition sources away from
refrigerants and oils.
3. Perform the following inspections:
a. Inspect for shipping and handling damages such
as broken lines, loose parts, or disconnected
wires, etc.
b. Inspect for oil at all refrigerant tubing
connections and on unit base. Detecting oil
generally indicates a refrigerant leak. Leak−test
all refrigerant tubing connections using
electronic leak detector, halide torch, or
liquid−soap solution.
c. Inspect all field−wiring and factory−wiring
connections. Be sure that connections are
completed and tight. Be sure that all electrical
wires are not in contact with refrigerant tubing
or sharp edges.
d. Inspect coil fins. If damaged during shipping and
handling, carefully straighten fins with a fin
comb.
4. Verify the following conditions:
a. Ensure that condenser−fan blades are correctly
positioned in fan orifice. See Condenser−Fan
Adjustment section for more details.
b. Ensure all air filters are in place.
c. Ensure that condensate drain trap is filled with
water to ensuring proper drainage.
d. Ensure that all tools and miscellaneous loose
parts have been removed.
WARNING
ELECTRICAL OPERATION HAZARD
Failure to follow this warning result in personal injury
or death.
The unit must be electrically grounded in accordance
with local codes and NEC ANSI/NFPA 70 (American
National Standards Institute/National fire Protection
Association.
Proceed as follows to inspect and prepare the unit for
initial start−up:
1. Remove all access panels.
WARNING
START−UP, GENERAL
IMPORTANT: Follow the base unit’s start-up sequence
as described in the unit’s installation instructions:
In addition to the base unit start-up, there are a few steps
needed to properly start-up the controls. RTU-OPEN’s
Service Test function should be used to assist in the base
unit start-up and also allows verification of output
operation. Controller configuration is also part of start-up.
This is especially important when field accessories have
been added to the unit. The factory pre-configures options
installed at the factory. There may also be additional
installation steps or inspection required during the start-up
process.
41
Additional Installation/Inspection
Inspect the field installed accessories for proper
installation, making note of which ones do or do not
require configuration changes. Inspect the RTU-OPEN’s
Alarms for initial insight to any potential issues. See
troubleshooting section for alarms. Inspect the SAT
sensor for relocation as intended during installation.
Inspect special wiring as directed below.
Unit Preparation
Ensure the unit has been installed in accordance with
installation instructions and applicable codes.
Return−Air Filters
Ensure the correct filters are installed in the unit (see
Appendix II − Physical Data). Do not operate unit without
return−air filters in place.
Outdoor−Air Inlet Screens
2. Turn off power to the unit and apply lockout/tagout
procedures.
3. Reverse any two of the unit power leads.
4. Re−energize to the compressor. Check pressures.
The suction and discharge pressure levels should now
move to their normal start−up levels.
NOTE: When the compressor is rotating in the wrong
direction, the unit will make an elevated level of noise
and will not provide cooling.
Refrigerant Service Ports
Each unit system has two 1/4” SAE flare (with check
valves) service ports: one on the suction line, and one on
the compressor discharge line. Be sure that caps on the
ports are tight.
Cooling
Compressors are internally spring mounted. Do not loosen
or remove compressor hold down bolts.
Set space thermostat to OFF position. To start unit, turn on
main power supply. Set system selector switch at COOL
position and fan switch to AUTO. position. Adjust
thermostat to a setting below room temperature.
Compressor starts on closure of contactor. (D08–12:
Second stage of thermostat will energize Circuit 2
contactor, start Compressor 2.)
Internal Wiring
Check unit charge. Refer to Refrigerant Charge section.
Check all electrical connections in unit control boxes.
Tighten as required.
Reset thermostat at a position above room temperature.
Compressor will shut off. Evaporator fan will shut off
after a 60−second delay if the dip switch for the indoor fan
off delay on the Defrost Control Board (DFB) is set to on.
Outdoor−air inlet screen must be in place before operating
unit.
Compressor Mounting
Compressor Rotation
!
CAUTION
EQUIPMENT DAMAGE
Failure to follow this caution can result in equipment
damage.
Scroll compressors can only compress refrigerant if
rotating in the right direction. Reverse rotation for
extended times can result in internal damage to the
compressor. Scroll compressors are sealed units and
cannot be repaired on site location.
On 3−phase units with scroll compressors, it is important
to be certain compressor is rotating in the proper
direction. To determine whether or not compressor is
rotating in the proper direction:
1. Connect service gauges to suction and discharge
pressure fittings.
2. Energize the compressor.
3. The suction pressure should drop and the discharge
pressure should rise, as is normal on any start−up.
If the suction pressure does not drop and the discharge
pressure does not rise to normal levels:
1. Note that the evaporator fan is probably also rotating
in the wrong direction.
To shut off unit − set system selector switch to the OFF
position. Resetting thermostat at a position above room
temperature shuts the unit off temporarily until space
temperature exceeds thermostat setting.
Heating
To start unit, turn on main power supply.
Set system selector switch to the HEAT position and set
thermostat at a setting above room temperature. Set fan to
AUTO position.
First stage of thermostat energizes compressor heating
(D08–12: both compressors will start). Second stage of
thermostat energizes electric heaters (if installed). Check
heating effects at air supply grille(s).
If electric heaters do not energize, reset limit switch
(located on supply−fan scroll) by pressing button located
between terminals on the switch.
Shut unit off − set system selector switch to the OFF
position. Resetting thermostat at a position below room
temperature temporarily shuts unit off until space
temperature falls below thermostat setting.
Ventilation (Continuous Fan)
Set fan and system selector switches at ON and OFF
positions, respectively. Supply fan operates continuously
to provide constant air circulation.
42
START−UP, PREMIERLINK™
!
START−UP, RTU−OPEN
NOTICE
WARNING
SET−UP INSTRUCTIONS
Refer to the following manuals for additional
installation, wiring and troubleshooting information
for the RTU−OPEN Controller.: “Controls, Start−up,
Operation and Troubleshooting Instructions,” “RTU
Open Installation and Start−up Guide” and
“RTU−Open Integration Guide”. Have a copy of these
manuals available at unit start−up.
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal
injury or death.
The unit must be electrically grounded in accordance
with local codes and NEC ANSI/NFPA 70 (American
National Standards Institute/National Fire Protection
Association.)
Use the Carrier Communication Network (CCN) software
to start up and configure the PremierLink controller.
Changes can be made using the ComfortWORKS
software, ComfortVIEW software, Network Service
Tool, System Pilot device, or Touch Pilot device. The
System Pilot and Touch Pilot are portable interface
devices that allow the user to change system set−up and
setpoints from a zone sensor or terminal control module.
During start−up, the Carrier software can also be used to
verify communication with PremierLink controller.
NOTICE
SET−UP INSTRUCTIONS
All set−up and set point configurations are factory set
and field−adjustable.
Refer to PremierLinkt Installation, Start−Up and
Configuration Instructions .for specific operating
instructions for the controller. Have a copy of this
manual available at unit start−up.
Perform System Check−Out
1. Check all power and communication connections
ensuring the are properly connected and securely
tightened.
2. At the unit, check fan and system controls for proper
operation.
3. At the unit, check electrical system and connections
of any optional electric reheat coil.
4. Ensure all area around the unit is clear of construction
dirt and debris.
5. Ensure final filters are installed in the unit. Dust and
debris can adversely affect system operation.
6. Verify the PremierLink controls are properly
connected to the CCN bus.
43
FASTENER TORQUE VALUES
Table 13 – Torque Values
Supply fan motor mounting
120 12 in-lbs
13.6 1.4 Nm
Supply fan motor adjustment plate
120 12 in-lbs
13.6 1.4 Nm
Motor pulley setscrew
72 5 in-lbs
8.1 0.6 Nm
Fan pulley setscrew
72 5 in-lbs
8.1 0.6 Nm
Blower wheel hub setscrew
72 5 in-lbs
8.1 0.6 Nm
Bearing locking collar setscrew
55 to60 in-lbs
6.2 to 6.8 Nm
Compressor mounting bolts
65 to75 in-lbs
7.3 to 7.9 Nm
Condenser fan motor mounting bolts
65 to75 in-lbs
7.3 to 7.9 Nm
Condenser fan motor mounting bolts
20 2 in-lbs
2.3 0.2 Nm
Condenser fan hub setscrew
84 12 in-lbs
9.5 1.4 Nm
Motor mount arm
60 5 in-lbs
6.8 0.5 Nm
Fan wheel hub setscrew
120 12 in-lbs
13.6 1.4 Nm
Motor belly band bolt
80 5 in-lbs
9.0 0.6 Nm
A04-06 Direct-Drive:
44
APPENDIX I. MODEL NUMBER SIGNIFICANCE
Model Number Nomenclature
Position:
1
2
3
4
5
6
7
8
Example:
5
0
T
C
Q
A
0
6
9 10 11 12 13 14 15 16 17 18
0 A 6 – 0 B 2 A 0
A
Series - WeatherMaker®
50TC - Packaged Rooftop
Factory Assigned
0 = Standard
1 = LTL
3 = CA Seismic Compliant
4 = LTL and CA Seismic Compliant
Q = Heat Pump
Refrig. Systems Options
A = One Stage Cooling Models
D = Two Stage Cooling Models
Electrical Options
A = None
C = Non-Fused Disconnect
D = Thru-The-Base Connections
F = Non-Fused Disconnect and
Thru-The-Base Connections
G = 2-Speed Indoor Fan Controller (VFD)
Cooling Tons
04 - 3 ton
05 - 4 ton
06 - 5 ton
07 - 6 ton
08 - 7.5 ton
09 - 8.5 ton
12 - 10 ton
14 - 12.5 ton
Service Options
0 = None
1 = Unpowered Convenience Outlet
2 = Powered Convenience Outlet
3 = Hinged Access Panels
4 = Hinged Access Panels and
Unpowered Convenience Outlet
5 = Hinged Panels and
Powered Convenience Outlet
Sensor Options
A = None
B = RA Smoke Detector
C = SA Smoke Detector
D = RA + SA Smoke Detector
E = CO2
F = RA Smoke Detector and CO2
G = SA Smoke Detector and CO2
H = RA + SA Smoke Detector and CO2
Intake / Exhaust Options
A = None
B = Temperature Economizer w/ Barometric Relief
F = Enthalpy Economizer w/ Barometric Relief
K = 2-Position Damper
U = Temperature Ultra Low Leak Economizer w/
Barometric Relief
W = Enthalpy Ultra Low Leak Economizer w/
Barometric Relief
Indoor Fan Options
0 = Electric Drive X13 Motor (04-06)
1 = Standard Static Option - Belt Drive
2 = Medium Static Option - Belt Drive
3 = High Static Option - Belt Drive
C = High Static Option with High Efficiency Motor- Belt Drive
(size 14 only)
Base Unit Controls
0 = Electro-mechanical Controls can be used with W7212
EconoMi$er IV (Non-Fault Detection and Diagnostic
1 = PremierLink Controller
2 = RTU Open Multi-Protocol Controller
6 = Electro-mechanical w/ 2-speed fan and W7220
Economizer controller Controls. Can be used with
W7220 EconoMi$er X (with Fault Detection and
Diagnostic)
Coil Options - Round Tube/Plate Fin Condenser Coil
(Outdoor - Indoor - Hail Guard)
A = Al/Cu - Al/Cu
B = Precoat Al/Cu - Al/Cu
C = E-coat Al/Cu - Al/Cu
D = E-coat Al/Cu - E-coat Al/Cu
E = Cu/Cu - Al/Cu
F = Cu/Cu - Cu/Cu
M = Al/Cu -Al/Cu — Louvered Hail Guard
N = Precoat Al/Cu - Al/Cu — Louvered Hail Guard
P = E-coat Al/Cu - Al/Cu — Louvered Hail Guard
Q = E-coat Al/Cu - E-coat Al/Cu — Louvered Hail Guard
R = Cu/Cu - Al/Cu — Louvered Hail Guard
S = Cu/Cu - Cu/Cu — Louvered Hail Guard
Design Revision
– = Factory Design Revision
Voltage
1 = 575/3/60
3 = 208-230/1/60
5 = 208-230/3/60
6 = 460/3/60
Note: On single phase (-3 voltage code) models, the
following are not available as a factory installed option:
- Coated Coils or Cu Fin Coils
- Louvered Hail Guards
- Economizer or 2 Position Damper
- Powered 115 Volt Convenience Outlet
C14236
45
Serial Number Format
POSITION NUMBER
TYPICAL
1
0
POSITION
1-2
3-4
5
6-10
2
4
3
0
4
9
5
G
6
1
7
2
8
3
DESIGNATES
Week of manufacture (fiscal calendar)
Year of manufacture (“08” = 2008)
Manufacturing location (G = ETP, Texas, USA)
Sequential number
46
9
4
10
5
APPENDIX II. PHYSICAL DATA
50TCQA05
50TCQA06
50TCQA07
1 / 1 / Scroll
9-8/Acutrol
630 / 505
27 / 44
100%
1 / 1 / Scroll
10 -3 / Acutrol
630 / 505
27 / 44
100%
1 / 1 / Scroll
12 - 13 / Acutrol
630 / 505
27 / 44
100%
1 / 1 / Scroll
17 - 10 / Acutrol
630 / 505
27 / 44
100%
Cu / Al
3/8-in RTPF
3 / 15
5.5
3/4-in
Cu / Al
3/8-in RTPF
3 / 15
5.5
3/4-in
Cu / Al
3/8-in RTPF
4/ 15
7.3
3/4-in
Cu / Al
3/8-in RTPF
4/ 15
7.3
3/4-in
Standard Static
1 phase
Motor Qty / Drive Type
Max BHP
RPM Range
Motor Frame Size
Fan Qty / Type
Fan Diameter x Length (in)
1 / Direct
1.0
600-1200
48
1 / Centrifugal
10 x 10
1 / Direct
1.0
600-1200
48
1 / Centrifugal
10 x 10
1 / Direct
1.0
600-1200
48
1 / Centrifugal
11 x 10
N/A
N/A
N/A
N/A
N/A
N/A
Standard Static
3 phase
3 − 6 TONS
50TCQA04
Motor Qty / Drive Type
Max BHP
RPM Range
Motor Frame Size
Fan Qty / Type
Fan Diameter x Length (in)
1 / Direct
1.0
600-1200
48
1 / Centrifugal
10 x 10
1 / Direct
1.0
600-1200
48
1 / Centrifugal
10 x 10
1 / Direct
1.0
600-1200
48
1 / Centrifugal
11 x 10
1 / Belt
1.5
878-1192
56
1 / Centrifugal
10 x 10
Medium Static
3 phase
(COOLING)
Motor Qty / Drive Type
Max BHP
RPM Range
Motor Frame Size
Fan Qty / Type
Fan Diameter x Length (in)
1 / Belt
1.5
819-1251
56
1 / Centrifugal
10 x 10
1 / Belt
1.5
920-1303
56
1 / Centrifugal
10 x 10
1 / Belt
2.0
1066-1380
56
1 / Centrifugal
10 x 10
1 / Belt
2.9
1066-1380
56
1 / Centrifugal
10 x 10
High Static
3 phase
TABLE 14 – PHYSICAL DATA
Motor Qty / Drive Type
Max BHP
RPM Range
Motor Frame Size
Fan Qty / Type
Fan Diameter x Length (in)
1 / Belt
2.0
1035-1466
56
1 / Centrifugal
10 x 10
1 / Belt
2.0
1035-1466
56
1 / Centrifugal
10 x 10
1 / Belt
2.9
1208-1639
56
1 / Centrifugal
10 x 10
1 / Belt
2.9
1208-1639
56
1 / Centrifugal
10 x 10
Material - Tube / Fin
Coil type
Rows / FPI
Total Face Area (ft2)
Cu / Al
3/8-in RTPF
2 / 17
10.7
Cu / Al
3/8-in RTPF
2 / 17
12.7
Cu / Al
3/8-in RTPF
2 / 17
15
Cu / Al
3/8-in RTPF
2 / 17
21.3
1 / Direct
1/8 / 825
22
1 / Direct
1/4 / 1100
22
1 / Direct
1/4 / 1100
22
1 / Direct
1/4 / 1100
22
2 / 16 x 25 x 2
1 / 20 x 24 x 1
2 / 16 x 25 x 2
1 / 20 x 24 x 1
4 / 16 x 16 x 2
1 / 20 x 24 x 1
4 / 16 x 16 x 2
1 / 20 x 24 x 1
Refrigeration System
# Circuits / # Comp. / Type
Puron refrig. (R-410A) charge per circuit A/B (lbs-oz)
Metering Device
High pressure Trip / Reset (psig)
Loss of Charge Pressure Trip / Reset (psig)
Compressor Capacity Staging (%)
Evap. Coil
Material - Tube / Fin
Coil type
Rows / FPI
Total Face Area (ft2)
Condensate Drain Conn. Size
Evap. Fan and Motor
Cond. Coil
Cond. fan / motor
Qty / Motor Drive Type
Motor HP / RPM
Fan diameter (in)
Filters
RA Filter # / Size (in)
OA inlet screen # / Size (in)
47
APPENDIX II. PHYSICAL DATA (CONT)
7.5 − 12.5 TONS
50TCQD08
50TCQD09
50TCQD12
50TCQD14
# Circuits / # Comp. / Type
Puron refrig. (R-410A) charge per circuit A/B (lbs-oz)
Metering Device
High pressure Trip / Reset (psig)
Loss of Charge Pressure Trip / Reset (psig)
Compressor Capacity Staging (%)
Evap. Coil
Material - Tube / Fin
Coil type
Rows / FPI
Total Face Area (ft2)
Condensate Drain Conn. Size
Evap. Fan and Motor
Motor Qty / Drive Type
Max BHP
RPM Range
Motor Frame Size
Fan Qty / Type
Fan Diameter x Length (in)
2 / 2 / Scroll
10 - 3 / 10 - 3
Acutrol
630 / 505
27 / 44
50% / 100%
2 / 2 / Scroll
11 - 2 / 11 - 2
Acutrol
630 / 505
27 / 44
50% / 100%
2 / 2 / Scroll
12 - 2 / 11 - 2
Acutrol
630 / 505
27 / 44
50% / 100%
2 / 2 / Scroll
14 - 8 / 13 - 8
Acutrol
630 / 505
27 / 44
50% / 100%
Cu / Al
3/8-in RTPF
3 / 15
11.1
3/4"
Cu / Al
3/8-in RTPF
4 / 15
11.1
3/4"
Cu / Al
3/8-in RTPF
4 / 15
11.1
3/4"
Cu / Al
3/8-in RTPF
3 / 15
17.5
3/4"
1 / Belt
1.2
460-652
56
1 / Centrifugal
15 x 15
1 / Belt
1.2
460-652
56
1 / Centrifugal
15 x 15
1 / Belt
1.7
460-652
56
1 / Centrifugal
15 x 15
1 / Belt
2.9
507-676
56
1 / Centrifugal
18 x 18
Medium Static
3 phase
(COOLING)
Motor Qty / Drive Type
Max BHP
RPM Range
Motor Frame Size
Fan Qty / Type
Fan Diameter x Length (in)
1 / Belt
2.9
591-838
56
1 / Centrifugal
15 x 15
1 / Belt
2.9
591-838
56
1 / Centrifugal
15 x 15
1 / Belt
2.8
591-838
56
1 / Centrifugal
15 x 15
1 / Belt
2.9
634-833
56
1 / Centrifugal
18 x 18
High Static
3 phase
TABLE 15 – PHYSICAL DATA
Motor Qty / Drive Type
Max BHP
RPM Range
Motor Frame Size
Fan Qty / Type
Fan Diameter x Length (in)
1 / Belt
2.9
838-1084
56
1 / Centrifugal
15 x 15
1 / Belt
2.9
838-1084
56
1 / Centrifugal
15 x 15
1 / Belt
4.0
838-1084
56
1 / Centrifugal
15 x 15
1 / Belt
6.1
792-971
S184T
1 / Centrifugal
18 x 18
Motor Qty / Drive Type
N/A
N/A
N/A
1 / Belt
Max BHP (208/230/460/575V)
N/A
N/A
N/A
6.5/6.9/7.0/8.3
RPM Range
N/A
N/A
N/A
776-955
Motor Frame Size
N/A
N/A
N/A
S184T
Fan Qty / Type
N/A
N/A
N/A
1 / Centrifugal
Fan Diameter x Length (in)
N/A
N/A
N/A
18 x 18
Cu / Al
3/8-in RTPF
2 / 17
25.1
Cu / Al
3/8-in RTPF
2 / 17
25.1
Cu / Al
3/8-in RTPF
3 / 17
25.1
Cu / Al
3/8-in RTPF
2 / 17
36.1
2 / Direct
1/4 / 1100
22
2 / Direct
1/4 / 1100
22
1 / Direct
1 / 1175
30
3 / Direct
1/4 / 1100
22
4 / 20 x 20 x 2
1 / 20 x 24 x 1
4 / 20 x 20 x 2
1 / 20 x 24 x 1
4 / 20 x 20 x 2
1 / 20 x 24 x 1
6 / 18 x 24 x 2
2 / 24 x 27 x 1
(Vertical)
1 / 30 x 39 x 1
(Horizontal)
High Static \ HighEfficiency
3 phase
Standard Static
3 phase
Refrigeration System
Cond. Coil
Material - Tube / Fin
Coil type
Rows / FPI
Total Face Area (ft2)
Cond. fan / motor
Qty / Motor Drive Type
Motor HP / RPM
Fan diameter (in)
Filters
RA Filter # / Size (in)
OA inlet screen # / Size (in)
48
APPENDIX III. FAN PERFORMANCE
General Fan Performance Notes:
1. Interpolation is permissible. Do not extrapolate.
2. External static pressure is the static pressure difference between the return duct and the supply duct plus the static
pressure caused by any FIOPs or accessories.
3. Tabular data accounts for pressure loss due to clean filters, unit casing, and wet coils. Factory options and accessories
can add static pressure losses.
4. The Fan Performance tables offer motor/drive recommendations. In cases when two motor/drive combinations would
work, Carrier recommended the lower horsepower option.
5. For information on the electrical properties of Carrier’s motors, please see the Electrical information section of this
book.
49
APPENDIX III. FAN PERFORMANCE (CONT)
TABLE 16 – 50TCQA04 ELECTRIC DRIVE, X13
MOTOR, 3 TON HORIZONTAL SUPPLY
SPEED
(TORQUE)
TAP
1
2
3
4
5
CFM
ESP
BHP
900
975
1050
1125
1200
1275
1350
1425
1500
900
975
1050
1125
1200
1275
1350
1425
1500
900
975
1050
1125
1200
1275
1350
1425
1500
900
975
1050
1125
1200
1275
1350
1425
1500
900
975
1050
1125
1200
1275
1350
1425
1500
0.70
0.60
0.50
0.39
0.29
0.21
0.12
0.03
0.85
0.76
0.66
0.55
0.46
0.36
0.27
0.17
0.07
1.02
0.94
0.86
0.79
0.71
0.61
0.51
0.40
0.29
1.12
1.06
1.00
0.95
0.89
0.80
0.70
0.57
0.46
1.18
1.14
1.10
1.06
1.02
0.98
0.94
0.90
0.87
0.31
0.30
0.29
0.27
0.26
0.24
0.23
0.21
0.37
0.36
0.36
0.34
0.34
0.32
0.31
0.29
0.27
0.44
0.45
0.45
0.45
0.45
0.44
0.43
0.41
0.39
0.49
0.50
0.52
0.53
0.54
0.53
0.52
0.50
0.49
0.52
0.54
0.56
0.58
0.60
0.63
0.65
0.68
0.71
TABLE 17 – 50TCQA04 ELECTRIC DRIVE, X13
MOTOR, 3 TON VERTICAL SUPPLY
SPEED
(TORQUE)
TAP
1
2
3
4
5
50
CFM
ESP
BHP
900
975
1050
1125
1200
1275
1350
1425
1500
900
975
1050
1125
1200
1275
1350
1425
1500
900
975
1050
1125
1200
1275
1350
1425
1500
900
975
1050
1125
1200
1275
1350
1425
1500
900
975
1050
1125
1200
1275
1350
1425
1500
0.44
0.35
0.24
0.15
0.08
0.02
0.64
0.53
0.42
0.32
0.24
0.15
0.07
0.93
0.80
0.68
0.57
0.47
0.35
0.26
0.13
0.08
1.04
0.92
0.80
0.71
0.62
0.52
0.43
0.27
0.22
1.10
1.00
0.90
0.82
0.75
0.70
0.67
0.60
0.62
0.22
0.21
0.20
0.19
0.19
0.18
0.30
0.29
0.28
0.27
0.26
0.25
0.24
0.42
0.41
0.39
0.38
0.37
0.36
0.34
0.33
0.32
0.47
0.46
0.45
0.45
0.45
0.44
0.44
0.42
0.41
0.50
0.49
0.49
0.50
0.51
0.54
0.57
0.60
0.64
APPENDIX III. FAN PERFORMANCE (CONT)
TABLE 18 – 50TCQA05 ELECTRIC DRIVE, X13
MOTOR, 4 TON HORIZONTAL SUPPLY
SPEED
(TORQUE)
TAP
1
2
3
4
5
CFM
ESP
BHP
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
0.75
0.63
0.48
0.33
0.19
0.05
0.97
0.88
0.77
0.64
0.50
0.36
0.21
0.06
0.98
0.91
0.82
0.71
0.58
0.45
0.31
0.16
0.03
0.98
0.92
0.86
0.79
0.70
0.62
0.52
0.37
0.21
1.02
0.97
0.92
0.87
0.82
0.77
0.71
0.65
0.58
0.48
0.46
0.44
0.41
0.39
0.36
0.58
0.59
0.59
0.59
0.57
0.54
0.52
0.49
0.59
0.60
0.62
0.62
0.61
0.60
0.58
0.56
0.52
0.59
0.62
0.64
0.66
0.68
0.70
0.71
0.69
0.67
0.60
0.64
0.67
0.71
0.75
0.79
0.84
0.88
0.92
TABLE 19 – 50TCQA05 ELECTRIC DRIVE, X13
MOTOR, 4 TON VERTICAL SUPPLY
SPEED
(TORQUE)
TAP
1
2
3
4
5
51
CFM
ESP
BHP
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
0.50
0.36
0.19
0.10
0.02
0.80
0.69
0.50
0.38
0.24
0.13
0.01
0.89
0.78
0.59
0.46
0.31
0.20
0.07
0.89
0.80
0.67
0.57
0.43
0.31
0.23
0.12
0.01
0.94
0.85
0.73
0.65
0.55
0.47
0.42
0.39
0.38
0.39
0.37
0.35
0.33
0.32
0.55
0.55
0.54
0.52
0.50
0.48
0.46
0.59
0.61
0.60
0.58
0.56
0.54
0.52
0.60
0.63
0.64
0.65
0.65
0.66
0.65
0.63
0.62
0.62
0.65
0.68
0.70
0.72
0.75
0.78
0.82
0.88
APPENDIX III. FAN PERFORMANCE (CONT)
TABLE 20 – 50TCQA06 ELECTRIC DRIVE, X13
MOTOR, 5 TON HORIZONTAL SUPPLY
SPEED
(TORQUE)
TAP
1
2
3
4
5
CFM
ESP
BHP
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1.19
1.01
0.82
0.60
0.38
0.16
1.40
1.25
1.08
0.90
0.67
0.44
0.20
1.41
1.28
1.13
0.96
0.74
0.51
0.27
0.02
1.44
1.35
1.24
1.11
0.90
0.69
0.43
0.17
1.49
1.38
1.28
1.18
1.11
0.97
0.72
0.47
0.20
0.74
0.73
0.70
0.66
0.62
0.57
0.86
0.88
0.86
0.84
0.80
0.75
0.71
0.87
0.89
0.89
0.88
0.85
0.80
0.75
0.70
0.89
0.93
0.96
0.98
0.96
0.92
0.86
0.81
0.90
0.95
1.00
1.05
1.09
1.11
1.07
1.02
0.96
TABLE 21 – 50TCQA06 ELECTRIC DRIVE, X13
MOTOR, 5 TON VERTICAL SUPPLY
SPEED
(TORQUE)
TAP
1
2
3
4
5
52
CFM
ESP
BHP
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1.00
0.72
0.46
0.28
0.14
0.00
1.18
1.00
0.75
0.51
0.30
0.13
1.19
1.03
0.80
0.56
0.35
0.19
0.01
1.25
1.09
0.89
0.65
0.45
0.26
0.12
1.26
1.16
0.99
0.80
0.67
0.48
0.26
0.11
-
0.70
0.65
0.60
0.55
0.51
0.52
0.88
0.90
0.87
0.83
0.79
0.75
0.88
0.91
0.90
0.87
0.83
0.80
0.77
0.89
0.93
0.96
0.94
0.93
0.89
0.86
0.90
0.96
1.01
1.05
1.07
1.07
1.03
1.00
-
APPENDIX III. FAN PERFORMANCE (CONT)
TABLE 22 – 50TCQA04
CFM
900
975
1050
1125
1200
1275
1350
1425
1500
3 TON HORIZONTAL SUPPLY
0.2
RPM
574
597
621
646
671
696
723
749
776
BHP
0.13
0.15
0.18
0.20
0.23
0.26
0.30
0.34
0.38
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
707
0.23
817
0.34
913
727
0.25
835
0.37
929
747
0.28
853
0.40
946
768
0.31
872
0.43
964
790
0.34
892
0.47
982
812
0.38
912
0.51
1001
835
0.42
933
0.55
1020
859
0.46
955
0.60
1040
883
0.51
977
0.65
1061
1.0
BHP
0.47
0.50
0.53
0.57
0.61
0.65
0.70
0.75
0.80
RPM
999
1015
1030
1047
1064
1082
1100
1119
1138
BHP
1.30
1.33
1.38
1.42
1.47
1.53
1.59
1.65
1.72
RPM
1346
1358
1371
1385
1399
1414
1429
1444
1461
BHP
0.61
0.64
0.68
0.72
0.76
0.81
0.86
0.91
0.97
Med static - 819-1251 RPM, Max BHP 1.5
High static - 1035-1466 RPM, Max BHP 2.0
CFM
900
975
1050
1125
1200
1275
1350
1425
1500
1.2
RPM
1078
1093
1108
1123
1140
1157
1174
1192
1210
BHP
0.77
0.80
0.84
0.88
0.92
0.97
1.02
1.08
1.14
RPM
1151
1165
1180
1195
1210
1226
1243
1260
1278
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
BHP
RPM
BHP
RPM
0.93
1220
1.11
1284
0.97
1233
1.15
1297
1.01
1247
1.19
1311
1.05
1261
1.23
1325
1.10
1276
1.28
1339
1.15
1292
1.33
1354
1.20
1308
1.39
1370
1.26
1325
1.45
1386
1.33
1342
1.52
1403
2.0
BHP
1.49
1.53
1.58
1.62
1.68
1.73
1.80
1.86
1.93
Med static - 819-1251 RPM, Max BHP 1.5
High static - 1035-1466 RPM, Max BHP 2.0
TABLE 23 – 50TCQA04
CFM
900
975
1050
1125
1200
1275
1350
1425
1500
3 TON VERTICAL SUPPLY
0.2
RPM
594
618
642
668
695
722
750
778
807
BHP
0.15
0.17
0.19
0.22
0.25
0.29
0.33
0.37
0.42
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
740
0.25
867
0.37
981
758
0.28
881
0.40
991
777
0.30
896
0.43
1003
797
0.34
912
0.47
1017
818
0.37
930
0.51
1032
841
0.41
949
0.55
1048
864
0.46
968
0.60
1065
888
0.50
989
0.65
1083
913
0.56
1011
0.71
1103
1.0
BHP
0.52
0.55
0.58
0.62
0.66
0.71
0.76
0.81
0.87
RPM
1084
1092
1102
1113
1126
1140
1155
1171
1188
BHP
1.47
1.51
1.54
1.59
1.64
1.69
1.75
1.82
1.89
RPM
1511
1513
1516
1520
1526
1533
1541
-
BHP
0.68
0.71
0.75
0.79
0.83
0.88
0.93
0.99
1.05
Med static - 819-1251 RPM, Max BHP 1.5
High static - 1035-1466 RPM, Max BHP 2.0
CFM
900
975
1050
1125
1200
1275
1350
1425
1500
1.2
RPM
1180
1186
1194
1204
1215
1227
1240
1254
1270
BHP
0.86
0.89
0.92
0.97
1.01
1.06
1.12
1.18
1.24
RPM
1269
1275
1281
1289
1298
1309
1321
1333
1347
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
BHP
RPM
BHP
RPM
1.05
1354
1.25
1434
1.08
1358
1.29
1437
1.12
1363
1.32
1441
1.16
1370
1.37
1447
1.21
1378
1.42
1454
1.26
1387
1.47
1462
1.32
1397
1.53
1471
1.38
1409
1.59
1481
1.45
1421
1.66
1492
2.0
BHP
1.70
1.74
1.78
1.82
1.87
1.92
1.99
-
Med static - 819-1251 RPM, Max BHP 1.5
High static - 1035-1466 RPM, Max BHP 2.0
Bold Face indicates field-supplied drive
Recommend using field-supplied fan pulley (part no. KR11AD561), motor pulley (part no. KR11HY181) and belt (part no.
KR29AF041).
53
APPENDIX III. FAN PERFORMANCE (CONT)
TABLE 24 – 50TCQA05
CFM
1200
1300
1400
1500
1600
1700
1800
1900
2000
4 TON HORIZONTAL SUPPLY
0.2
RPM
671
705
740
776
813
851
881
927
965
BHP
0.23
0.28
0.33
0.38
0.45
0.52
0.60
0.69
0.78
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
790
0.34
892
0.47
982
820
0.39
919
0.52
1007
851
0.45
947
0.58
1034
883
0.51
977
0.65
1061
916
0.58
1007
0.73
1089
949
0.66
1038
0.81
1118
984
0.75
1069
0.90
1148
1019
0.84
1102
1.00
1179
1054
0.94
1135
1.11
1210
1.0
BHP
0.61
0.67
0.73
0.80
0.89
0.97
1.07
1.18
1.29
RPM
1064
1088
1113
1138
1165
1192
1221
1250
1280
BHP
1.47
1.55
1.63
1.72
1.82
1.93
-
RPM
1399
1419
1439
1461
-
BHP
0.76
0.82
0.89
0.97
1.05
1.15
1.25
1.36
1.48
Med static - 920-1303 RPM, Max BHP 1.5
High static - 1035-1466 RPM, Max BHP 2.0
CFM
1200
1300
1400
1500
1600
1700
1800
1900
2000
1.2
RPM
1140
1162
1186
1210
1236
1262
1289
1317
1345
BHP
0.92
0.99
1.06
1.14
1.23
1.33
1.44
1.55
1.68
RPM
1210
1232
1254
1278
1302
1328
1354
1380
1408
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
BHP
RPM
BHP
RPM
1.10
1276
1.28
1339
1.16
1297
1.35
1360
1.24
1319
1.43
1381
1.33
1342
1.52
1403
1.42
1365
1.62
1425
1.52
1390
1.72
1449
1.63
1415
1.84
1.75
1441
1.96
1.88
-
2.0
BHP
1.68
1.75
1.84
1.93
-
Med static - 920-1303 RPM, Max BHP 1.5
High static - 1035-1466 RPM, Max BHP 2.0
Bold Face indicates field-supplied drive
Recommend using field-supplied fan pulley (part no. KR11AD561), motor pulley (part no. KR11HY181) and belt (part no.
KR29AF041).
TABLE 25 – 50TCQA05
CFM
1200
1300
1400
1500
1600
1700
1800
1900
2000
4 TON VERTICAL SUPPLY
0.2
RPM
695
731
769
807
847
887
928
969
1010
BHP
0.25
0.30
0.36
0.42
0.49
0.57
0.66
0.76
0.87
RPM
818
849
880
913
948
983
1020
1057
1095
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
BHP
RPM
BHP
RPM
0.37
930
0.51
1032
0.43
955
0.57
1053
0.49
982
0.63
1077
0.56
1011
0.71
1103
0.63
1042
0.79
1130
0.72
1073
0.88
1158
0.82
1106
0.98
1188
0.92
1140
1.09
1219
1.04
1175
1.21
1251
BHP
0.66
0.72
0.79
0.87
0.96
1.06
1.16
1.28
1.41
RPM
1126
1145
1166
1188
1213
1239
1266
1295
1325
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
BHP
RPM
BHP
RPM
1.21
1378
1.42
1454
1.28
1390
1.49
1465
1.36
1405
1.57
1478
1.45
1421
1.66
1492
1.54
1440
1.76
1509
1.65
1459
1.88
1.77
1481
2.00
1.90
-
BHP
1.64
1.71
1.79
1.89
1.99
-
RPM
1526
1536
-
1.0
BHP
0.83
0.89
0.97
1.05
1.14
1.24
1.35
1.48
1.61
Med static - 920-1303 RPM, Max BHP 1.5
High static - 1035-1466 RPM, Max BHP 2.0
CFM
1200
1300
1400
1500
1600
1700
1800
1900
2000
1.2
RPM
1215
1231
1249
1270
1292
1315
1341
1367
1395
BHP
1.01
1.08
1.16
1.24
1.34
1.44
1.56
1.68
1.82
RPM
1298
1313
1329
1347
1367
1389
1412
1437
-
2.0
BHP
1.87
1.94
-
Med static - 920-1303 RPM, Max BHP 1.5
High static - 1035-1466 RPM, Max BHP 2.0
Bold Face indicates field-supplied drive
Recommend using field-supplied fan pulley (part no. KR11AD561), motor pulley (part no. KR11HY181) and belt (part no.
KR29AF041).
54
APPENDIX III. FAN PERFORMANCE (CONT)
TABLE 26 – 50TCQA06
CFM
1500
1625
1750
1875
2000
2125
2250
2375
2500
5 TON HORIZONTAL SUPPLY
0.2
RPM
725
765
806
847
889
931
974
1018
1061
BHP
0.33
0.40
0.48
0.57
0.66
0.78
0.90
1.03
1.19
RPM
840
876
912
950
988
1027
1067
1107
1148
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
BHP
RPM
BHP
RPM
0.46
937
0.60
1023
0.54
970
0.68
1054
0.63
1004
0.78
1087
0.72
1039
0.88
1120
0.83
1075
1.00
1154
0.95
1112
1.13
1189
1.08
1149
1.27
1224
1.23
1187
1.43
1261
1.39
1226
1.59
1297
BHP
0.75
0.84
0.94
1.05
1.18
1.31
1.46
1.63
1.81
RPM
1101
1131
1162
1194
1226
1260
1294
1329
1364
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
BHP
RPM
BHP
RPM
1.23
1302
1.40
1361
1.34
1329
1.52
1388
1.46
1358
1.65
1416
1.60
1387
1.79
1445
1.74
1417
1.95
1474
1.90
1447
2.11
1504
2.08
1479
2.29
1534
2.27
1511
2.49
1566
2.47
1543
2.70
-
BHP
1.58
1.71
1.84
1.99
2.15
2.33
2.51
2.72
-
RPM
1418
1444
1472
1499
1528
1557
1587
-
1.0
BHP
0.90
1.00
1.11
1.23
1.36
1.50
1.66
1.84
2.02
Med static - 1066-1380 RPM, Max BHP 2.0
High static - 1208-1639 RPM, Max BHP 2.9
CFM
1500
1625
1750
1875
2000
2125
2250
2375
2500
1.2
RPM
1172
1201
1231
1262
1294
1326
1359
1393
1427
BHP
1.06
1.16
1.28
1.41
1.55
1.70
1.87
2.05
2.24
RPM
1239
1267
1296
1326
1357
1388
1420
1453
1487
2.0
BHP
1.77
1.90
2.04
2.20
2.36
2.55
2.74
-
Med static - 1066-1380 RPM, Max BHP 2.0
High static - 1208-1639 RPM, Max BHP 2.9
TABLE 27 – 50TCQA06
CFM
1500
1625
1750
1875
2000
2125
2250
2375
2500
5 TON VERTICAL SUPPLY
0.2
RPM
794
840
888
936
984
1033
1083
1133
1183
BHP
0.41
0.49
0.59
0.70
0.82
0.96
1.11
1.28
1.47
RPM
902
945
988
1033
1078
1124
1170
1217
1265
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
BHP
RPM
BHP
RPM
0.55
993
0.69
1074
0.64
1034
0.80
1113
0.75
1075
0.92
1153
0.87
1117
1.05
1193
1.00
1160
1.19
1235
1.15
1204
1.35
1277
1.32
1248
1.53
1319
1.50
1293
1.72
1363
1.70
1339
1.93
1406
BHP
0.85
0.96
1.09
1.23
1.39
1.56
1.74
1.95
2.17
RPM
1147
1185
1223
1263
1303
1343
1385
1427
1470
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
BHP
RPM
BHP
RPM
1.33
1336
1.50
1392
1.47
1371
1.65
1427
1.63
1407
1.81
1462
1.80
1444
1.99
1498
1.98
1482
2.19
1535
2.18
1520
2.40
1573
2.40
1559
2.62
1611
2.63
1598
2.87
2.89
-
BHP
1.67
1.83
2.01
2.19
2.40
2.62
2.85
-
RPM
1445
1479
1514
1550
1586
1623
-
1.0
BHP
1.00
1.13
1.26
1.41
1.58
1.76
1.96
2.17
2.41
Med static - 1066-1380 RPM, Max BHP 2.0
High static - 1208-1639 RPM, Max BHP 2.9
CFM
1500
1625
1750
1875
2000
2125
2250
2375
2500
1.2
RPM
1214
1251
1289
1327
1366
1406
1446
1487
1529
BHP
1.16
1.30
1.44
1.60
1.78
1.97
2.18
2.40
2.64
RPM
1277
1313
1350
1387
1426
1464
1504
1544
1585
Med static - 1066-1380 RPM, Max BHP 2.0
High static - 1208-1639 RPM, Max BHP 2.9
55
2.0
BHP
1.85
2.02
2.20
2.40
2.61
2.84
-
APPENDIX III. FAN PERFORMANCE (CONT)
TABLE 28 – 50TCQA07
CFM
1800
1950
2100
2250
2400
2550
2700
2850
3000
6 TON HORIZONTAL SUPPLY
0.2
RPM
822
872
923
974
1026
1079
1132
1186
1240
BHP
0.51
0.62
0.75
0.90
1.06
1.25
1.46
1.69
1.94
RPM
927
973
1019
1067
1115
1164
1214
1264
1315
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
BHP
RPM
BHP
RPM
0.66
1018
0.82
1100
0.79
1061
0.95
1140
0.92
1104
1.10
1182
1.08
1149
1.27
1224
1.26
1195
1.46
1268
1.46
1241
1.67
1312
1.67
1289
1.90
1358
1.92
1336
2.15
1404
2.18
1385
2.43
1451
BHP
0.98
1.13
1.29
1.46
1.66
1.88
2.12
2.39
2.68
RPM
1174
1213
1253
1294
1336
1379
1422
1467
1512
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
BHP
RPM
BHP
RPM
1.51
1369
1.70
1427
1.68
1405
1.88
1462
1.87
1441
2.08
1498
2.08
1479
2.29
1534
2.31
1517
2.53
1572
2.55
1557
2.79
2.83
-
BHP
1.90
2.09
2.29
2.51
2.76
-
RPM
1483
1517
1552
1587
-
1.0
BHP
1.15
1.31
1.48
1.66
1.87
2.10
2.35
2.63
2.93
Std static - 878-1192 RPM, Max BHP 1.5
Med static - 1066-1380 RPM, Max BHP 2.9
High static - 1208-1639 RPM, Max BHP 2.9
CFM
1800
1950
2100
2250
2400
2550
2700
2850
3000
1.2
RPM
1244
1281
1320
1359
1400
1441
1483
1527
-
BHP
1.33
1.49
1.67
1.87
2.09
2.33
2.59
2.87
-
RPM
1308
1345
1382
1420
1460
1500
1541
-
2.0
BHP
2.10
2.30
2.51
2.74
-
Std static - 878-1192 RPM, Max BHP 1.5
Med static - 1066-1380 RPM, Max BHP 2.9
High static - 1208-1639 RPM, Max BHP 2.9
TABLE 29 – 50TCQA07
CFM
1800
1950
2100
2250
2400
2550
2700
2850
3000
6 TON VERTICAL SUPPLY
0.2
RPM
907
965
1024
1083
1143
1203
1264
1326
1387
BHP
0.63
0.77
0.93
1.11
1.32
1.55
1.81
2.09
2.41
RPM
1006
1060
1115
1170
1227
1284
1342
1400
1459
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
BHP
RPM
BHP
RPM
0.80
1092
0.97
1169
0.95
1143
1.13
1218
1.12
1195
1.32
1268
1.32
1248
1.53
1319
1.54
1302
1.76
1371
1.78
1357
2.02
1424
2.06
1412
2.31
1478
2.36
1469
2.62
1532
2.69
-
BHP
1.14
1.32
1.52
1.74
1.99
2.26
2.56
2.89
-
RPM
1239
1287
1335
1385
1435
1487
1539
-
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
BHP
RPM
BHP
RPM
1.69
1422
1.88
1477
1.91
1467
2.11
1520
2.14
1512
2.35
1565
2.40
1559
2.62
1611
2.68
-
BHP
2.08
2.31
2.57
2.85
-
RPM
1528
1572
1616
-
1.0
BHP
1.32
1.51
1.72
1.96
2.22
2.50
2.82
-
Std static - 878-1192 RPM, Max BHP 1.5
Med static - 1066-1380 RPM, Max BHP 2.9
High static - 1208-1639 RPM, Max BHP 2.9
CFM
1800
1950
2100
2250
2400
2550
2700
2850
3000
1.2
RPM
1304
1350
1398
1446
1496
1546
-
BHP
1.51
1.71
1.93
2.18
2.45
2.75
-
RPM
1365
1410
1457
1504
1552
-
Std static - 878-1192 RPM, Max BHP 1.5
Med static - 1066-1380 RPM, Max BHP 2.9
High static - 1208-1639 RPM, Max BHP 2.9
56
2.0
BHP
2.28
2.52
2.79
-
APPENDIX III. FAN PERFORMANCE (CONT)
TABLE 30 – 50TCQD08
CFM
2250
2438
2625
2813
3000
3188
3375
3563
3750
7.5 TON HORIZONTAL SUPPLY
0.2
RPM
423
444
465
487
510
534
557
582
606
BHP
0.28
0.34
0.40
0.47
0.55
0.65
0.75
0.86
0.99
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
509
0.40
587
0.52
659
525
0.46
600
0.59
669
543
0.53
614
0.67
680
561
0.61
629
0.76
693
580
0.70
646
0.86
707
600
0.80
663
0.96
722
621
0.91
681
1.08
738
642
1.03
700
1.21
755
664
1.17
720
1.35
773
1.0
BHP
0.66
0.73
0.82
0.91
1.02
1.13
1.26
1.39
1.54
RPM
725
733
743
753
765
779
793
808
824
BHP
1.41
1.52
1.64
1.77
1.91
2.06
2.22
2.40
2.58
RPM
1009
1010
1012
1016
1021
1028
1035
1044
1054
BHP
0.80
0.88
0.97
1.08
1.19
1.31
1.44
1.58
1.74
Std static - 460-652 RPM, Max BHP 1.2
Med static - 591-838 RPM, Max BHP 2.9
High static - 838-1084 RPM, Max BHP 2.9
CFM
2250
2438
2625
2813
3000
3188
3375
3563
3750
1.2
RPM
788
794
802
811
821
832
845
858
873
BHP
0.94
1.03
1.13
1.24
1.36
1.49
1.63
1.78
1.94
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
RPM
BHP
RPM
BHP
RPM
847
1.09
903
1.25
957
852
1.19
907
1.36
959
858
1.30
911
1.47
963
865
1.41
917
1.59
967
874
1.54
925
1.72
974
884
1.68
933
1.87
981
895
1.82
943
2.02
990
907
1.98
954
2.19
1000
920
2.15
966
2.36
1011
2.0
BHP
1.58
1.70
1.82
1.96
2.11
2.26
2.43
2.61
2.80
Std static - 460-652 RPM, Max BHP 1.2
Med static - 591-838 RPM, Max BHP 2.9
High static - 838-1084 RPM, Max BHP 2.9
TABLE 31 – 50TCQD08
CFM
2250
2438
2625
2813
3000
3188
3375
3563
3750
7.5 TON VERTICAL SUPPLY
0.2
RPM
447
470
494
518
543
568
593
619
645
BHP
0.31
0.37
0.45
0.53
0.62
0.72
0.84
0.97
1.11
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
528
0.43
597
0.54
658
548
0.50
615
0.62
675
569
0.58
634
0.71
692
590
0.67
653
0.82
710
612
0.77
673
0.93
729
635
0.89
694
1.05
749
658
1.01
716
1.19
769
681
1.15
737
1.33
789
705
1.30
760
1.49
810
1.0
BHP
0.66
0.75
0.85
0.96
1.08
1.21
1.36
1.52
1.68
RPM
713
729
745
763
780
799
818
837
857
BHP
1.26
1.40
1.54
1.69
1.86
2.04
2.23
2.43
2.65
RPM
939
952
966
980
995
1010
1026
1042
1059
BHP
0.78
0.88
0.99
1.11
1.24
1.38
1.53
1.70
1.88
Std static - 460-652 RPM, Max BHP 1.2
Med static - 591-838 RPM, Max BHP 2.9
High static - 838-1084 RPM, Max BHP 2.9
CFM
2250
2438
2625
2813
3000
3188
3375
3563
3750
1.2
RPM
764
779
795
811
828
846
864
882
902
BHP
0.89
1.00
1.12
1.25
1.39
1.54
1.70
1.88
2.07
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
RPM
BHP
RPM
BHP
RPM
812
1.02
856
1.14
899
826
1.13
870
1.26
912
841
1.26
885
1.40
926
857
1.40
900
1.55
941
873
1.55
916
1.70
956
890
1.71
932
1.87
972
907
1.88
949
2.05
988
925
2.06
966
2.25
1005
944
2.26
984
2.45
1022
Std static - 460-652 RPM, Max BHP 1.2
Med static - 591-838 RPM, Max BHP 2.9
High static - 838-1084 RPM, Max BHP 2.9
57
2.0
BHP
1.39
1.53
1.68
1.84
2.02
2.21
2.40
2.62
2.84
APPENDIX III. FAN PERFORMANCE (CONT)
TABLE 32 – 50TCQD09
CFM
2550
2763
2975
3188
3400
3613
3825
4038
4250
8.5 TON HORIZONTAL SUPPLY
0.2
RPM
468
493
520
547
575
603
631
660
689
BHP
0.39
0.47
0.57
0.68
0.80
0.94
1.09
1.26
1.45
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
546
0.52
618
0.66
684
567
0.61
635
0.76
699
589
0.72
654
0.87
716
613
0.83
675
1.00
733
637
0.96
696
1.14
752
662
1.11
719
1.29
773
688
1.27
742
1.46
794
714
1.45
766
1.65
816
741
1.65
790
1.86
838
1.0
BHP
0.80
0.91
1.03
1.17
1.31
1.48
1.66
1.85
2.07
RPM
747
760
774
789
806
824
843
864
885
BHP
1.62
1.77
1.93
2.10
2.29
2.49
2.71
2.95
3.21
RPM
1018
1022
1028
1036
1046
1057
-
BHP
0.96
1.07
1.20
1.34
1.50
1.67
1.86
2.06
2.29
Std static - 460-652 RPM, Max BHP 1.2
Med static - 591-838 RPM, Max BHP 2.9
High static - 838-1084 RPM, Max BHP 2.9
CFM
2550
2763
2975
3188
3400
3613
3825
4038
4250
1.2
RPM
806
817
829
843
858
874
891
910
930
BHP
1.11
1.24
1.37
1.53
1.69
1.87
2.07
2.28
2.51
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
RPM
BHP
RPM
BHP
RPM
863
1.28
916
1.45
968
871
1.41
924
1.59
974
882
1.55
932
1.74
981
894
1.71
943
1.90
990
907
1.88
955
2.09
1001
922
2.07
968
2.28
1013
938
2.28
983
2.49
1027
955
2.50
999
2.72
1041
973
2.74
1015
2.97
1057
2.0
BHP
1.80
1.95
2.12
2.30
2.50
2.71
-
Std static - 460-652 RPM, Max BHP 1.2
Med static - 591-838 RPM, Max BHP 2.9
High static - 838-1084 RPM, Max BHP 2.9
TABLE 33 – 50TCQD09
CFM
2550
2763
2975
3188
3400
3613
3825
4038
4250
8.5 VERTICAL SUPPLY
0.2
RPM
495
524
552
582
611
641
672
702
733
BHP
0.43
0.53
0.63
0.76
0.89
1.05
1.22
1.41
1.62
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
570
0.56
634
0.70
693
595
0.67
657
0.81
714
620
0.79
681
0.94
736
647
0.92
705
1.08
759
674
1.07
730
1.24
782
701
1.23
756
1.42
806
729
1.42
782
1.61
831
758
1.62
809
1.83
857
787
1.84
836
2.06
883
1.0
BHP
0.83
0.95
1.09
1.25
1.42
1.60
1.81
2.03
2.28
RPM
746
766
787
808
831
854
877
901
926
BHP
1.50
1.68
1.86
2.07
2.29
2.53
2.79
-
RPM
965
982
999
1017
1036
1055
-
BHP
0.96
1.09
1.24
1.41
1.59
1.79
2.00
2.24
2.49
Std static - 460-652 RPM, Max BHP 1.2
Med static - 591-838 RPM, Max BHP 2.9
High static - 838-1084 RPM, Max BHP 2.9
CFM
2550
2763
2975
3188
3400
3613
3825
4038
4250
1.2
RPM
795
814
834
855
876
898
921
944
968
BHP
1.09
1.24
1.40
1.57
1.76
1.97
2.20
2.45
2.71
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
RPM
BHP
RPM
BHP
RPM
841
1.23
885
1.36
926
859
1.38
902
1.53
943
878
1.55
921
1.71
961
898
1.74
940
1.90
979
919
1.94
960
2.12
998
940
2.16
980
2.34
1018
962
2.40
1001
2.59
1039
984
2.65
1023
2.86
-
Std static - 460-652 RPM, Max BHP 1.2
Med static - 591-838 RPM, Max BHP 2.9
High static - 838-1084 RPM, Max BHP 2.9
58
2.0
BHP
1.64
1.82
2.02
2.24
2.47
2.72
-
APPENDIX III. FAN PERFORMANCE (CONT)
TABLE 34 – 50TCQD12
CFM
3000
3250
3500
3750
4000
4250
4500
4750
5000
10 TON HORIZONTAL SUPPLY
0.2
RPM
523
555
588
621
655
689
723
758
793
BHP
0.58
0.71
0.86
1.03
1.23
1.45
1.69
1.96
2.26
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
592
0.73
657
0.88
718
620
0.87
681
1.04
739
649
1.03
707
1.21
762
679
1.21
734
1.40
786
709
1.42
761
1.61
812
741
1.65
790
1.86
838
773
1.90
820
2.12
866
805
2.19
850
2.42
894
838
2.50
881
2.74
923
1.0
BHP
1.05
1.21
1.39
1.59
1.82
2.07
2.35
2.65
2.98
RPM
775
794
815
837
860
885
910
937
965
BHP
1.95
2.16
2.38
2.64
2.91
3.21
3.54
3.89
-
RPM
1029
1039
1051
1065
1080
1097
1115
-
BHP
1.22
1.39
1.58
1.79
2.03
2.29
2.57
2.89
3.23
Std static - 591-839 RPM, Max BHP 1.2
Med static - 733-949 RPM, Max BHP 2.9
High static - 838-1084 RPM, Max BHP 3.7
CFM
3000
3250
3500
3750
4000
4250
4500
4750
5000
1.2
RPM
830
847
865
885
907
930
954
979
1005
BHP
1.39
1.57
1.77
1.99
2.24
2.51
2.81
3.13
3.49
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
RPM
BHP
RPM
BHP
RPM
883
1.57
934
1.76
982
897
1.76
946
1.96
993
914
1.97
961
2.18
1007
932
2.20
978
2.42
1022
952
2.46
996
2.68
1038
973
2.74
1015
2.97
1057
996
3.05
1037
3.29
1076
1019
3.38
1059
3.63
1097
1044
3.74
1082
4.01
-
2.0
BHP
2.14
2.36
2.60
2.86
3.14
3.45
3.79
-
Std static - 591-839 RPM, Max BHP 2.4
Med static - 733-949 RPM, Max BHP 2.9
High static - 838-1084 RPM, Max BHP 3.7
TABLE 35 – 50TCQD12
CFM
3000
3250
3500
3750
4000
4250
4500
4750
5000
0.2
RPM
556
590
625
661
697
733
770
807
844
BHP
0.65
0.79
0.96
1.16
1.37
1.62
1.89
2.20
2.54
10 VERTICAL SUPPLY
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
623
0.80
684
0.95
738
655
0.96
713
1.13
766
687
1.14
742
1.32
794
719
1.35
773
1.54
822
753
1.58
804
1.79
852
787
1.84
836
2.06
883
821
2.13
869
2.36
914
856
2.45
902
2.69
945
891
2.80
936
3.06
978
1.0
BHP
1.11
1.29
1.50
1.73
1.99
2.28
2.59
2.94
3.31
RPM
789
815
841
869
897
926
956
986
1018
BHP
1.89
2.13
2.40
2.70
3.02
3.36
3.74
-
RPM
1001
1023
1045
1068
1092
1117
1142
-
BHP
1.26
1.46
1.68
1.93
2.20
2.49
2.82
3.18
3.57
Std static - 591-839 RPM, Max BHP 2.4
Med static - 733-949 RPM, Max BHP 2.9
High static - 838-1084 RPM, Max BHP 3.7
CFM
3000
3250
3500
3750
4000
4250
4500
4750
5000
1.2
RPM
836
861
886
912
940
968
996
1026
1056
BHP
1.42
1.63
1.86
2.12
2.40
2.71
3.05
3.42
3.82
RPM
881
904
929
954
980
1007
1035
1063
-
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
BHP
RPM
BHP
RPM
1.57
923
1.73
963
1.79
945
1.96
985
2.04
969
2.22
1008
2.31
994
2.50
1031
2.61
1019
2.81
1056
2.93
1045
3.15
1081
3.28
1072
3.51
1108
3.66
1100
3.91
-
Std static - 591-839 RPM, Max BHP 2.4
Med static - 733-949 RPM, Max BHP 2.9
High static - 838-1084 RPM, Max BHP 3.7
59
2.0
BHP
2.05
2.30
2.58
2.89
3.22
3.58
3.97
-
APPENDIX III. FAN PERFORMANCE (CONT)
TABLE 36 – 50TCQD14
CFM
3750
4063
4375
4688
5000
5313
5625
5938
6250
12.5 TON HORIZONTAL SUPPLY
0.2
RPM
381
401
421
441
462
483
504
525
546
BHP
0.53
0.63
0.75
0.89
1.04
1.21
1.40
1.61
1.84
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
452
0.74
520
0.98
584
468
0.86
531
1.11
592
484
0.99
544
1.25
601
501
1.14
558
1.40
612
519
1.30
573
1.58
625
537
1.49
589
1.77
638
556
1.69
605
1.99
653
575
1.91
622
2.22
668
595
2.15
640
2.48
684
1.0
BHP
1.26
1.39
1.53
1.70
1.88
2.08
2.31
2.55
2.82
RPM
645
651
657
666
675
686
699
712
726
Std static - 507-676 RPM, Max BHP 2.9
Med static - 634-833 RPM, Max BHP 2.9
High static - 792-971 RPM, 208V: Max BHP 5.0; 230V/460V: Max BHP 6.1; 575V: Max BHP 5.9
Bold Face requires standard static drive package with KR11HY153 (1VP34) motor pulley (338-507)
Italics requires high static drive package with KR11HY186 (1VM50) motor pulley (684-864)
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
CFM
1.2
1.4
1.6
1.8
1.9
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
3750
703
1.88
757
2.23
808
2.59
855
2.97
878
3.17
4063
707
2.03
760
2.38
810
2.75
857
3.14
880
3.34
4375
711
2.18
763
2.55
812
2.93
859
3.33
882
3.53
4688
717
2.36
767
2.73
815
3.12
862
3.52
884
3.73
5000
725
2.55
773
2.93
820
3.32
865
3.73
887
3.95
5313
734
2.77
780
3.15
825
3.55
869
3.96
890
4.18
5625
744
3.01
788
3.39
832
3.79
874
4.22
895
4.44
5938
755
3.27
798
3.65
840
4.06
881
4.49
901
4.71
6250
768
3.55
808
3.94
849
4.36
888
4.79
908
5.01
BHP
1.56
1.69
1.85
2.02
2.21
2.42
2.65
2.90
3.17
2.0
RPM
900
902
904
906
908
912
916
921
927
BHP
3.36
3.55
3.74
3.94
4.16
4.40
4.66
4.94
5.24
Std static - 507-676 RPM, Max BHP 2.9
Med static - 634-833 RPM, Max BHP 2.9
High static - 792-971 RPM, 208V: Max BHP 5.0; 230V/460V: Max BHP 6.1; 575V: Max BHP 5.9
Italics requires high static drive package with KR11HY186 (1VM50) motor pulley (684-864)
TABLE 37 – 50TCQD14
CFM
12.5 VERTICAL SUPPLY
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
513
0.88
582
1.15
647
533
1.03
598
1.30
660
554
1.19
615
1.48
674
576
1.38
634
1.68
690
599
1.59
653
1.90
706
622
1.82
674
2.14
724
646
2.08
695
2.41
743
671
2.37
717
2.71
763
695
2.69
740
3.03
784
0.2
RPM
BHP
3750
441
0.65
4063
466
0.78
4375
491
0.94
4688
517
1.11
5000
543
1.31
5313
570
1.54
5625
596
1.78
5938
623
2.06
6250
650
2.36
Std static - 507-676 RPM, Max BHP 2.9
Med static - 634-833 RPM, Max BHP 2.9
High static - 792-971 RPM, 208V: Max BHP 5.0; 230V/460V: Max BHP 6.1; 575V: Max BHP 5.9
Bold Face requires standard static drive package with KR11HY153 (1VP34) motor pulley (338-507)
Italics requires high static drive package with KR11HY186 (1VM50) motor pulley (684-864)
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
CFM
1.2
1.4
1.6
1.8
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
3750
764
2.12
816
2.48
866
2.86
912
3.24
935
4063
773
2.31
825
2.68
874
3.07
921
3.47
943
4375
784
2.51
835
2.90
883
3.30
929
3.72
951
4688
795
2.73
845
3.13
893
3.54
938
3.98
960
5000
808
2.98
856
3.38
903
3.81
947
4.25
969
5313
822
3.25
868
3.66
914
4.10
957
4.55
978
5625
837
3.54
882
3.96
925
4.41
968
4.87
989
5938
852
3.86
896
4.30
938
4.75
980
5.22
1000
6250
869
4.22
911
4.65
952
5.12
992
5.59
1012
Std static - 507-676 RPM, Max BHP 2.9
Med static - 634-833 RPM, Max BHP 2.9
High static - 792-971 RPM, 208V: Max BHP 5.0; 230V/460V: Max BHP 6.1; 575V: Max BHP 5.9
Bold Face requires standard static drive package with KR11HY153 (1VP34) motor pulley (338-507)
Italics requires high static drive package with KR11HY186 (1VM50) motor pulley (684-864)
Underline requires high static drive package with KR11HY194 (1VP60) motor pulley (864-1061).
60
1.0
BHP
1.45
1.61
1.80
2.00
2.23
2.48
2.76
3.07
3.40
RPM
707
718
730
744
758
774
790
808
827
1.9
BHP
1.78
1.95
2.14
2.36
2.59
2.85
3.14
3.45
3.80
2.0
BHP
3.44
3.68
3.93
4.19
4.48
4.78
5.11
5.46
5.84
RPM
956
965
973
981
990
999
1009
1020
1032
BHP
3.64
3.88
4.14
4.42
4.71
5.02
5.35
5.71
6.09
APPENDIX III. FAN PERFORMANCE (CONT)
TABLE 38 – PULLEY ADJUSTMENT − BELT DRIVE
04
05
06
07
08
09
12
14
3 phase 3 phase 3 phase 3 phase 3 phase 3 phase 3 phase 3 phase
UNIT
MOTOR PULLEY TURNS OPEN
1.5
2
2.5
3
3.5
MOTOR/DRIVE
COMBO
0
0.5
1
Medium Static
1251
1208
1165
1121
1078
1035
992
High Static
1466
1423
1380
1337
1294
1251
Medium Static
1303
1265
1226
1188
1150
High Static
1466
1423
1380
1337
Medium Static
1380
1349
1317
High Static
1639
1596
Standard Static
Medium Static
High Static
Standard Static
Medium Static
High Static
Standard Static
Medium Static
High Static
Standard Static
Medium Static
High Static
Standard Static
Medium Static
High Static
1192
1380
1639
652
838
1084
652
838
1084
652
838
1084
676
**
**
1161
1349
1596
633
813
1059
633
813
1059
633
813
1059
659
**
**
4
4.5
5
5.5
6
949
905
862
819
-
-
1207
1164
1121
1078
1035
-
-
1112
1073
1035
997
958
920
-
-
1294
1251
1207
1164
1121
1078
1035
-
-
1286
1254
1223
1192
1160
1129
1097
1066
-
-
1553
1510
1467
1424
1380
1337
1294
1251
1208
-
-
1129
1317
1553
614
789
1035
614
789
1035
614
789
1035
642
833
971
1098
1286
1510
594
764
1010
594
764
1010
594
764
1010
625
813
953
1066
1254
1467
575
739
986
575
739
986
575
739
986
608
793
935
1035
1223
1424
556
715
961
556
715
961
556
715
961
592
773
917
1004
1192
1380
537
690
936
537
690
936
537
690
936
575
753
899
972
1160
1337
518
665
912
518
665
912
518
665
912
558
734
882
941
1129
1294
498
640
887
498
640
887
498
640
887
541
714
864
909
1097
1251
479
616
863
479
616
863
479
616
863
524
694
846
878
1066
1208
460
591
838
460
591
838
460
591
838
507
674
828
*
654
810
*
634
792
NOTE: Do not adjust pulley further than 5 turns open.
- Factory settings
* Do not set motor pulley above 5 turns open for A or AX section belts
** Do not set motor pulley below 1 turn open for B or BX section belts
61
APPENDIX IV. WIRING DIAGRAMS
Wiring Diagrams
SIZE
TON
A04
3
A05
4
A06
5
A07
6
SIZE
TON
D08
7
D09
8.5
D12
10
D14
12.5
VOLTAGE
208/230-1-60
208/230-3-60
460-3-60
575-3-60
208/230-1-60
208/230-3-60
460-3-60
575-3-60
208/230-1-60
208/230-3-60
460-3-60
575-3-60
208/230-1-60
208/230-3-60
460-3-60
575-3-60
50TCQA
CONTROL
48TM501434-J
48TM501434-J
48TM501434-J
48TM501520-J
48TM501434-J
48TM501434-J
48TM501434-J
48TM501520-J
48TM501434-J
48TM501434-J
48TM501434-J
48TM501520-J
48TM501434-J
48TM501434-J
48TM501434-J
48TM501520-J
VOLTAGE
208/230-3-60
460-3-60
575-3-60
208/230-3-60
460-3-60
575-3-60
208/230-3-60
460-3-60
575-3-60
208/230-3-60
460-3-60
575-3-60
PremierLink*
RTU Open*
50TCQD
CONTROL
48TM501370-O
48TM501370-O
48TM501370-O
48TM501370-O
48TM501370-O
48TM501370-O
48TM501926-K
48TM501926-K
48TM501926-K
50TM500814-P
50TM500814-P
50TM500814-P
48TM501529-H
50HE500751-J
POWER
48TM501435-I
48TM501436-I
48TM501515-J
48TM501516-J
48TM501435-I
48TM501436-I
48TM501515-J
48TM501516-J
48TM501435-I
48TM501436-I
48TM501515-J
48TM501516-J
48TM501435-I
48TM501436-I
48TM501515-J
48TM501516-J
POWER
48TM501371-L
48TM501371-L
48TM501371-L
48TM501371-L
48TM501371-L
48TM501371-L
48TM501927-G
48TM501958-G
48TM501958-G
50TM500628-J
50TM500634-H
50TM500634-H
NOTE: Component arrangement on Control; Legend on Power Schematic
* PremierLink and RTU OPEN control labels overlay a portion of the base unit control label. The base unit label drawing and the control option drawing
are required to provide a complete unit control diagram.
62
APPENDIX IV. WIRING DIAGRAMS (CONT)
C150426
Fig. 58 − 50TCQ A04/A05/A06/A07 Control Wiring Diagram − 208/230−1−60; 208/230−3−60; 460−3−60
63
APPENDIX IV. WIRING DIAGRAMS (CONT)
C150427
Fig. 59 − 50TCQ A04/A05/A06/A07 Control Wiring Diagram − 575−3−60
64
APPENDIX IV. WIRING DIAGRAMS (CONT)
C150428
Fig. 60 − 50TCQ D08/D09 Control Wiring Diagram − 208/230−3−60; 460−3−60; 575−3−60
65
APPENDIX IV. WIRING DIAGRAMS (CONT)
C150328
Fig. 61 − 50TCQ D12 Control Wiring Diagram − 208/230−3−60; 460−3−60; 575−3−60
66
APPENDIX IV. WIRING DIAGRAMS (CONT)
C150429
Fig. 62 − 50TCQ D14 Control Wiring Diagram − 208/230−3−60; 460−3−60; 575−3−60
67
APPENDIX IV. WIRING DIAGRAMS (CONT)
C150243
Fig. 63 − 50TCQ A04/A05/A06/A07 Power Wiring Diagram − 208/230−1−60
68
APPENDIX IV. WIRING DIAGRAMS (CONT)
C12629
Fig. 64 − 50TCQ A04/A05/A06/A07 Power Wiring Diagram − 208/230−3−60
69
APPENDIX IV. WIRING DIAGRAMS (CONT)
C12353
Fig. 65 − 50TCQ A04/A05/A06/A07 Power Wiring Diagram − 460−3−60
70
APPENDIX IV. WIRING DIAGRAMS (CONT)
C12630
Fig. 66 − 50TCQ A04/A05/A06/A07 Power Wiring Diagram − 575−3−60
71
APPENDIX IV. WIRING DIAGRAMS (CONT)
C12626
Fig. 67 − 50TCQ D08/D09 Power Wiring Diagram − 208/230−3−60; 460−3−60; 575−3−60
72
APPENDIX IV. WIRING DIAGRAMS (CONT)
C12633
Fig. 68 − 50TCQ D12 Power Wiring Diagram − 208/230−3−60
73
APPENDIX IV. WIRING DIAGRAMS (CONT)
C150327
Fig. 69 − 50TCQ D12 Power Wiring Diagram − 460−3−60; 575−3−60
74
APPENDIX IV. WIRING DIAGRAMS (CONT)
C150434
Fig. 70 − 50TCQ D14 Power Wiring Diagram − 208/230−3−60
75
APPENDIX IV. WIRING DIAGRAMS (CONT)
C150431
Fig. 71 − 50TCQ D14 Power Wiring Diagram − 460−3−60; 575−3−60
76
APPENDIX IV. WIRING DIAGRAMS (CONT)
C150432
Fig. 72 − 50TCQ PremierLink Control Diagram
77
APPENDIX IV. WIRING DIAGRAMS (CONT)
C12615
Fig. 73 − 50TCQ RTU−Open Control Diagram
78
APPENDIX V. MOTORMASTER SENSOR LOCATIONS
C10646
Fig. 74 − 50TCQA04 Outdoor Circuiting
SENSOR LOCATION
C12332
Fig. 75 − 50TCQA05/A06 Outdoor Circuiting
79
APPENDIX V. MOTORMASTER SENSOR LOCATIONS (CONT)
Sensor
Location
C09194
Fig. 76 − 50TCQA07 Outdoor Circuiting
Sensor
Location
C09195
Fig. 77 − 50TCQD08/D09 Outdoor Circuiting
80
APPENDIX V. MOTORMASTER SENSOR LOCATIONS (CONT)
SENSOR
LOCATION
Locate sensor on
feeder tube
(as shown on coil
whose headers are
closest to the
compressor access
panel)
C10939
Fig. 78 − 50TCQD12 Outdoor Circuiting
81
APPENDIX V. MOTORMASTER SENSOR LOCATIONS (CONT)
C11096
Fig. 79 − 50TCQD14 Outdoor Circuiting
82
START-UP CHECKLIST
(Remove and Store in Job File)
I. PRELIMINARY INFORMATION
MODEL NO.:
SERIAL NO.:
DATE:
TECHNICIAN:
II. PRE-START-UP (insert checkmark in box as each item is completed)
VERIFY THAT JOBSITE VOLTAGE AGREES WITH VOLTAGE LISTED ON RATING PLATE
VERIFY THAT ALL PACKAGING MATERIALS HAVE BEEN REMOVED FROM UNIT
REMOVE ALL SHIPPING HOLD DOWN BOLTS AND BRACKETS PER INSTALLATION INSTRUCTIONS
VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS
CHECK REFRIGERANT PIPING FOR INDICATIONS OF LEAKS; INVESTIGATE AND REPAIR IF NECESSARY
CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS
CHECK THAT RETURN (INDOOR) AIR FILTERS ARE CLEAN AND IN PLACE
VERIFY THAT UNIT INSTALLATION IS LEVEL
CHECK FAN WHEELS AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND SETSCREW
TIGHTNESS
CHECK TO ENSURE THAT ELECTRICAL WIRING IS NOT IN CONTACT WITH REFRIGERANT LINES
OR SHARP METAL EDGES
CHECK PULLEY ALIGNMENT AND BELT TENSION PER INSTALLATION INSTRUCTIONS
III. START-UP
ELECTRICAL
SUPPLY VOLTAGE
CIRCUIT 1 COMPRESSOR AMPS
L1-L2
L1
L2-L3
L3-L1
L2
L3
CIRCUIT 2 COMPRESSOR AMPS
L1
L2
L3
NO. 1
NO. 2
NO. 3
INDOOR-FAN AMPS
OUTDOOR-FAN AMPS
TEMPERATURES
OUTDOOR-AIR TEMPERATURE
DB
WB
RETURN-AIR TEMPERATURE
DB
WB
COOLING SUPPLY AIR
DB
WB
PRESSURES (Cooling Mode)
REFRIGERANT SUCTION, CIRCUIT 1
PSIG
F
REFRIGERANT SUCTION, CIRCUIT 2
PSIG
F
REFRIGERANT DISCHARGE, CIRCUIT 1
PSIG
F
REFRIGERANT DISCHARGE, CIRCUIT 2
PSIG
F
VERIFY THAT 3-PHASE FAN MOTOR AND BLOWER ARE ROTATING IN CORRECT DIRECTION.
VERIFY THAT 3-PHASE SCROLL COMPRESSOR IS ROTATING IN THE CORRECT DIRECTION
VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS
GENERAL
SET ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO MATCH JOB REQUIREMENTS
(IF EQUIPPED)
83
Copyright 2015 Carrier Corp. 7310 W. Morris St. Indianapolis, IN 46231
Edition Date: 12/15
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
84
Catalog No: 50TCQ-4-14-01SM
Replaces: 50TCQ-01SM
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