LENNOX Package Units(both Units Combined) Manual L0806659

User Manual: LENNOX LENNOX Package Units(both units combined) Manual LENNOX Package Units(both units combined) Owner's Manual, LENNOX Package Units(both units combined) installation guides

Open the PDF directly: View PDF PDF.
Page Count: 28

DownloadLENNOX  Package Units(both Units Combined) Manual L0806659
Open PDF In BrowserView PDF
INSTALLATION
INSTRUCTIONS

TeCh n i cal
blications
Litho

U.S.A.

,_,_2007

THA024

_,WARNING

(2 TON)
(2-1/2 TON)
(3 TON)

THA030
THA036

THA048 (4 TON)
THA060 (5 TON)
THA072 (6 TON)

RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE

Dimensions .................................
Shipping and Packing List ....................

Page 1
Page 2

General

Page 2

....................................

Requirements ...............................
Unit Support ................................

Page 2
Page 3

Duct Connection ............................
Rigging Unit For Lifting .......................

Page 3
Page 3

Condensate Drains ..........................
Electrical Connections
.......................

Page 4
Page 6

FILTERS
024,030, 036, 048, 060B:
16 X 20 X2"
060S, 072S: 20 X 20 X 2"

INDOOR

INDOOR COIL

BLOWER
MOTOR

HEAT PUMP PACKAGED
505,308M
6/2007
Supersedes 505,098M

Blower

UNITS

Operation

and Adjustments

Heating

Start-Up

............................

Page 23

Cooling

Start-Up

............................

Page 23

Defrost

Control

Service

Board

............

Page 9

........................

Page 26

....................................

DEFROST CONTROL
BOARD (CMC1)

Page 26

OUTDOORFAN

TXV
OUTDOOR
TXV

ECONOMIZER
(OPTIONAL)

CONDENSATE
DRAIN

ELECTRIC HEAT
(OPTIONAL)

06/07

IIIBIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII

OUTDOOR
COIL
REVERSING
VALVE

TB1 LOW VOLTAGE
TERMINAL BLOCK

COMPRESSOR
505,308M

IIIlllIIIIIIIIIIIIIIIIIHIIIIIIl

45/ .11..1 1/.T18
'_

BOTTOM

47

/

Base//

I

I

I

I S&q_LY-+

_ I I
_1--

BOTTOM

I
26-1/2

_

!r

\\\_N_z::_j////

CENTER_T_+
_ 53/4
-_

_

_1-

BOTTOM
CONDENSATE OUTLET

_

38"112"-I_"

BOTTOM POWER
(3 x 8)

ENTRY

TOP VIEW (Base)

83-1/4
45

q

ELECTRICAL

04

I

o_ o

o__ o_
i

_1-

CONDEN-

i

.. o ..
'- _

SATE
OUTLET

_ _

oo

_

_

5_

oo1_

(Either Side)

I,oo

_//_
_--

47
Base

LIFTING HOLES
(For rigging)

"

E
261/2

ool
_, 5-1/2

_1_"

85-1/4
Base

I111
I

SIDE VIEW

END VIEW

III

F

llII
qzz_

OO

J

FORKLIFT SLOTS
(Front, Back and Blower End)

//

/

HORIZONTAL
SUPPLY AIR
OPENING

Page 1

CCCC]
5-!/2

/

o

I _/2

HORIZONTAL
RETURN AIR
OPENING

P

The National Electric Code (ANSI/NFPA No. 70-1984) is
available from:
Package 1 of 1 contains:

National Fire Protection Association

1 - Assembled unit

1 Batterymarch Park
PO Box 9101

Check unit for shipping damage. Receiving party should
contact last carrier immediately if shipping damage is
found,

These instructions are intended as a general guide and
do not supersede local codes in any way. Authorities
having jurisdiction
should
be consulted
before
installation,
Availability of units and options varies by brand,

The THA unit is ETL/CSA certified as a heat pump with
cooling and with or without auxiliary electric heat for
non-residential use only at the clearances to combustible
materials as listed on the unit nameplate and in figure 1.

Quincy, MA 02269-9101
Installation of ETL/CSA certified units must also conform
with current standard C273.5 "Installation Requirements
for Heat Pumps" and applicable local codes. Authorities
having jurisdiction
should
be consulted
before
installation.
Use of this unit as a construction heater or air conditioner
is not recommended during any phase of construction.
Very low return air temperatures, harmful vapors and
operation of the unit with clogged or misplaced filters will
damage the unit.
If this unit has been used for heating or cooling of
buildings or structures under construction, the following
conditions must be met or the warranty will be void:

Installation of THA heat pumps must conform with
standards in National Fire Protection Association (NFPA)
"Standard for Installation of Air Conditioning
and
Ventilating Systems NFPA No. 90A," "Standard for
Installation of Residence Type Warm Air Heating and Air
conditioning Systems NFPA No. 90B," local municipal
building
codes
and
manufacturer's
installation
instructions.

• A room thermostat must control the unit. The use of
fixed jumpers that will provide continuous heating or
cooling is not allowed.
• A pre-filter must be installed at the entry to the return
air duct.
• The return air duct must be provided and sealed to
the unit.
• Return air temperature range between 55°F (13°C)
and 80°F (27°C) must be maintained.

JNIT CLEARANCES

t

• Air filters must be replaced and pre-filter must be
removed upon construction completion.

C

• The unit components, duct system, air filters and
evaporator coil must be thoroughly cleaned following
final construction clean-up.
• The unit operating conditions (including airflow,
cooling operation, and heating operation) must be
verified according to these installation instructions.

t
A

,WARNING
FIGURE 1

Clearance

1 Unit

A
in.
(mm)

B
in.
(mm)

C
in.
(mm)

D
in.
(mm)

Top
Clearance

Service
Clearance

48
(1219)

36
(914)

36
(914)

36
(914)

Unobstructed

Minimum Operation Clearance

36
(914)

36
(914)

36
(914)

36
(914)

Unobstructed

Note - Entire perimeter
mounting
1 Service
Minimum

of unit base requires

support

when elevated

ACAUTION

above

surface.
Clearance
Operation

- Required
Clearance

for removal

of serviceable

- Required

clearance

parts.
for proper

unit

operation.

Page 2

2-

Specified
installation
clearances
must
be
maintained when installing units, Refer to figure 1.

3-

Top of support slab should be at least 4" (102mm)
above the finished grade and located so no run-off
water from higher ground can collect around the unit,

4-

Units require support along all four sides of unit base.
Supports must be constructed of steel or suitably
treated wood materials,

klMPORTANT

NOTE

- Securely

fasten

roof frame

A - Downflow Discharge

to roof per local

codes.

Application

Roof Mounting with T1CURB
1-

The T1CURB roof mounting frame must be installed,
flashed and sealed in accordance
with the

All exterior ducts, joints, and openings in roof or building
walls must be insulated and weatherproofed with flashing
and sealing compounds in accordance with applicable
codes. Any duct passing through an unconditioned space
must be insulated.

instructions provided with the frame,

CAUTION

2-

The TlCURB roof mounting frame should be square
and level to 1/16" per linear foot (5mm per linear
meter) in any direction,

3-

Duct must be attached to the roof mounting frame
and not to the unit; supply and return plenums must
be installed before setting the unit,
Installer's Roof Mounting Frame

Many types of roof frames can be used to install the unit,
depending upon different roof structures. Items to keep in
mind when using the building frame or supports are:
1-

The unit base is fully enclosed and insulated, so an
enclosed frame is not required.

2-

The frames or supports must be constructed with
non-combustible materials and should be square
and level to 1/16" per linear foot (5mm per linear
meter) in any direction,

3-

Frame or supports must be high enough to prevent
any form of moisture
from
entering
unit.
Recommended
minimum frame height is 14"
(356mm),

4-

Duct must be attached to the roof mounting frame
and not to the unit. Supply and return plenums must
be installed before setting the unit,

5-

Units require support along all four sides d unit base.
Supports must be constructed of steel or suitably
treated wood materials,

1-

Detach wooden base protection before rigging,

2-

Remove all six base protection brackets before
setting unit, A 12" or longer extension
is
recommended when using a drill gun.

3-

Connect rigging to the unit base using both holes in
each corner. See figure 2,

4- All panels must be in place for rigging.
5-

Place field-provided H-style pick in place just above
top edge d unit. Frame must be of adequate strength
and length. (H-style pick prevents damage to unit,

TH UNIT
*Maximum weight with all available
installed accessories.

CAUTION: DO NOT
WALK ON UNIT.

NOTE-When installing unit on a combustible surface for
downflow discharge applications, the TlCURB roof
mounting frame is required,
B - Horizontal
1-

Discharge

Applications

Units which are equipped
with an optional
economizer and installed in horizontal airflow
applications must use a horizontal conversion kit,
Page 3

FIGURE 2

Lifting Point Should
Be Directly Above
Center Of Gravity.

HORIZONTAL RETURN AIR DUCTWORK
WITH OPTIONAL ECONOMIZER

Unit is shipped with panels covering the horizontal supply
and return air openings. Remove horizontal covers and
place over downflow openings for horizontal air
discharge, See figure 3, Secure in place with sheet metal
screws,

UNIT

UNIT SUPPLY AND RETURN AIR OPENINGS
HORIZONTAL
RETURN AIR

HORIZONTAL
SUPPLY AIR
OPENING

OPENING

__
HORIZONTAL
RETURN AIR
DUCT

INSTALL BAROMETRIC RELIEF DAMPERS
AND HOOD IN RETURN AIR DUCT

FIGURE 4
DOWNFLOW
RETURN AIR
OPENING

DOWNFLOW
SUPPLY AIR
OPENING

FIGURE 3

Make drain connection to the 3/4" N,P,T, drain coupling
provided on unit,

Units Equipped With An Optional Economizer 1- Remove the horizontal supply air cover and position
over the downflow supply air opening, Secure with
sheet metal screws,
2- Leave the horizontal return air cover in place.
3- Locate the separately
ordered
horizontal
air
discharge kit, Place the kit panel over the downflow
return air opening,
4- Remove and retain the barometric relief dampers and
lower hood.
5- Install return air duct beneath outdoor air intake, See
figure 4. Install barometric relief damper in lower
hood and install in duct as shown in figure 4.

Note - The drain pan is made with a glass reinforced
engineered plastic capable of withstanding typical joint
torque but can be damaged with excessive force, Tighten
pipe nipple hand tight and turn an additional quarter turn,
A trap must be installed between drain connection and an
open vent for proper condensate removal, See figure 5 or
6, It is sometimes acceptable to drain condensate onto
the roof or grade; however, a tee should be fitted to the
trap to direct condensate downward. The condensate line
must be vented. Check local codes concerning
condensate disposal. Refer to pages 1 and 2 for
condensate drain location,

Page 4

CONDENSATE
SIDEDRAIN
CAULK AROUND

CONDENSATE

CONNECTION

COUPLING.

1Mi;i5mmU2) ;eitth0 '

dX_

(3re) of line

I I

OPENViNT

\

UN,T

_

CONDENSATE
MULLION

II IIII

FIGURE 7
If the unit has hinged panels, two hinge screws must
be removed in addition to the mullion screws. See
figure 8.

MOUNTING

UNITS WITH HINGED PANELS

FRAME "_'P'_

FIGURE 5
CONDENSATE

BOTTOM DRAIN CONNECTION
UNIT

C°NDENSATE
REMOVE
TWO
SCREWS

E]

CAULK AROUND
CONDENSATE

DRAIN MULLION

E,:I

COUPLING

FIGURE 8
_

MOUNTING
FRAME

OPiN

VENT

Lift the front edge of the drain pan and slide pan out
of unit, See figure 9.
REMOVE DRAIN PAN

Minimum Pitch
1" (25 ram) per 10'
(3 m) of line

FIGURE 6
Units are shipped with the drain coupling facing the front
of the unit, Condensate can be drained from the back or
bottom of the unit with the following modifications. The
unit can be installed in either downflow or horizontal air
discharge regardless of condensate drain location.
DRAIN PAN

Rear Drain Connection
1-

Remove the condensate drain mullion, See figure 7.
Remove the two panels on each side of the mullion.

Page 5

FIGURE 9

_

Make sure the cap over the unit bottom drain hole is
secure.

5-

Remove the cap over the unit bottom drain hole,

6-

Slide the drain pan back into the unit.

4-

Rotate the drain pan until the downward slope is
toward the back of the unit. Slide the drain pan back
into the unit. Be careful not to dislodge the cap over
the bottom drain hole.

7-

From the back side of the unit, pull the drain pan
coupling through the rear condensate opening,

8-

From the front side of the unit, move the drain pan
until the bottom coupling settles into the unit bottom
drain opening. Once in place, check to make sure the
coupling is still positioned
through the rear
condensate drain hole.

5-

From the back side of the unit, pull the drain pan
coupling through the rear condensate opening.

6-

Replace the condensate drain mullion.

Bottom Drain Connection
1-

Remove the condensate drain mullion. See figure 7.

2-

Lift the front edge of the drain pan and slide pan out
of unit. See figure 9.

3-

Turn the drain pan upside down and drill a pilot hole
through the bottom of the drain pan in the center of
the coupling. See figure 10.
BOTTOM CONDENSATE

CAUTION: Be careful not to
damage the coupling threads
when drilling the hole.

Use a field-provided
connection.

g-

3/4" plug to seal side drain

10- Replace the condensate drain mullion.

POWER SUPPLY
Do not apply power or close disconnect

DRAIN

switch until

installation is complete. Refer to start-up directions. Refer
closely to unit wiring diagram. Figure 12 shows a typical
DRILL A PILOT
HOLE IN CENTER
OF COUPLING

unit wiring diagram.
Refer to unit nameplate for minimum circuit ampacity and
maximum fuse size.
-

Units are factory-wired for 240,460,575 volt supply.
For 208V supply, remove the insulated terminal
cover from the 208V terminal on the control
transformer. Move the wire from the transformer
240V terminal to the 208V terminal. Place the
insulated terminal cover on the unused 240V
terminal.

After drilling the pilot
hole, drill a 7/8" hole from
the inside of the pan.

-

FIGURE 10
.

From the inside of the pan, use a Vari-BiP bit to
enlarge the hole to 7/8". Do not damage coupling
threads.

Page 6

Route power through the bottom power entry area
and connect to L1, L2, and L3 on the top of K1 in
control area above compressor. Route power to TB2
on units equipped with electric heat. Secure power
wiring with factory-installed wire ties provided in
control box. See unit wiring diagram.

CONTROL
WIRING
A - Thermostat

3- Connect thermostat wiring to TB1 terminal control
board on the lower side of the controls hat section,

Location

Wire as shown in figure 11 for electro-mechanical
and
electronic
thermostats,
If using other

Room thermostat mounts vertically on a standard 2" X 4"
handy box or on any non-conductive flat surface,

temperature control devices or energy management
systems see instructions
and wiring diagram
provided by manufacturer,

Locate thermostat approximately 5 feet (1524 mm) above
the floor in an area with good air circulation at average
temperature, Avoid locating the room thermostat where it
might be affected by:

IMPORTANT-Terminal
connections at the wall plate or
subbase must be made securely, Loose control wire
connections may allow unit to operate but not with proper
response to room demand.

-drafts or dead spots behind doors and in corners
-hot or cold air from ducts
-radiant heat from sun or appliances

24 VOLT FIELD WIRING WITH ELECTRONIC AND
ELECTRO-MECHANICAL
THERMOSTATS

-concealed pipes and chimneys
IMPORTANT - Unless field thermostat wires are rated for
maximum unit voltage, they must be routed away from
fine voltage wiring. Use wire ties located near the lower
left corner of the controls hat section to secure thermostat

TO CMC1 ; DO NOT
REMOVE FACTORY
INSTALLED WIRES

cable.
B - Control Wiring
1- Route thermostat

cable or wires from subbase to

control area above compressor (refer to unit
dimensions to locate bottom and side power entry),

I

I

I

I

I

I

I

II
I

II
I

I,hl
I
I
I III

II
I

II
I

II
I

I

I

I

I

I

I

"iii

I

I

I

I

1¢iiii

w_ _) G_ R_ C_ A_ V_ V_

Use18 AWG wire for all applications using remotely
installed
electro-mechanical
and
electronic
thermostats,
2- Install thermostat assembly in accordance
instructions provided with thermostat,

A2 THERMOSTAT

NOT
ALLTERMINALS
AREFOUND
ONALL
THERMOSTATS

Jumper
terminals
Rand
|OC
when thermostat has
| no night setback terminals.
/

Note - On electro-mechanical thermostats set anticipator at 0.1 amps.

with
FIGURE 11

Page 7

TYPICAL THA UNIT WIRING SCHEMATIC

24V

/_

NOTE-FOR
REFER TO
AMPACITY

./2',
$40

POWER

USE WITH COPPER CONDUCTORS
ONLY
UNIT RATING PLATE FOR MINIMUM CIRCUIT
AND MAXIMUa
OVERCURRENT
PROTECTION
SIZE

IS NOT

REO'D

ON 072

UNITS
ECONOMIZER

BLOIER(8)
HEAT

I(!l)

HEAT

2(W2]

COOL

I(YI)

;5

)_

_5

• A6

\PIE

)
• K65

)
/ PII
i Jlt

)67
I P4
/

DESCRIPTION
COMPONENT
CONTROL-SOLID
STATE ENTHALPY
DETECTOR-SMOKE.
RETURN AIR
DETECTOR-SMOKE,
SUPPLY AIR
COMPRESSOR
MOTOR-BLOWER
MOTOR-OUTDOOR
FAN
MOTOR-DAMPER.ECONOMIZER
MOTOR-_XHAU_T
FAN
_APA_ITOR-OIITDOOR
FAN
CAPACITOR-BLOWER
MOTOR
CAPACITOR-EXHAUST
FAN

KEY
A6
AI7
A64
81
B3
B_
67
610
CI
CA
C6

J3

24V

LI

L2

\

J132

/_B_

PIS2

EXHAUST
FAN MOTOR

DISCONNECT

ALL

POWER

BEFORE

OPTIONAL

VOLTAGE

K3,-I
K8.-I.2

_ONTACTOR-BLO_ER
RELAY-TRANSFER

K58_-I
K65,-I,_
LI
P4
PIG
P35
P43
_45
P132
53

RELAY-LOW
AMBIENT KIT
RELAY-EXHAUST
FAN
CALVE-REVERSING
_LUO-ECONOMIZER
_LUB-EXHAUST FAN
_LUO-TEST
_LUG-BLO@ER
MOTOR
_LUG-INPUT
_LUG-BLOIER.EXHAUST
FAN MOTOR
_WITCH-LIMIT,LOW
COMP I
/COMPRESSOR
MONITOR
;WITCH-LIMIT,HI
PRESS|MANUAL RESET
;WITCH-DEFROST.
COMPRESSOR I
;WITCH-LOW PRESS.LOW AMP KIT
FHERMOSTAT-CRANKCASE
;WITCH-FREEZESTAT
_ITCH-FIRESTAT
I
;WITCH-FIRESTAT
2
_WITCH-LOW
PRESS. COMPRESSOR
I
PRANSFORMER-CONTROL

COOLING

IT

Supersedes

COMPONENTS

FIELD

WIRINGDIAGRAMLL
_
UNITS-PACKAGED

Form No.

I

I

INSTALLED
_)

FIGURE 12
Page 8

I

THA-036,04-8,060,072- I-Y
208-230/60/3
COOLING SECTION 633

WARNING-ELECTRIC
SHOCK HAZARD,CAN
CAUSE INJURY
OR DEATH. UNIT MUST BE GROUNDED
IN
ACCORDANCE
WITH NATIONAL
AND LOCAL CODES
DENOTES

lAMER-DEFROST,
COMPRESSOR I
=USE-EXHAUST FAN
4EATER _OMPRE_OR
JACK-HEAT
JACK-UNIT
ECONOMIZER
JACK-EXHAUST
FAN
JACK-TEST
JACK-BLOWER,EXHAUST
FAN MOTOR
30NTACTOR-COMPRESSOR

SERVICING

NOTE-IF ANY WIRE IN THIS APPLIANCE
IS REPLACEO,
MUST BE REPLACED
WITH WIRE OF LIKE SIZE, RATING,
TERMINATION
AND INSULATION
THICKNESS.

LINE

CMCI
F6
HRI
J2
J3
JIB
J35
3132
KI,-I

$4
SB
SII
S€0
_¢g
$74
S75
SB7
TI

Pi3Z

COMMON

ZOO6

Net* Form No+

535,026W
Lliho

U,S,A,

.

2 and2-1/2ton unitsare equippedwith directdrive
blowersonly.3,4,and5tonunitsareequipped
witheither
directdriveorbeltdriveblowers.060Sand072unitsare
available
withbeltdriveblowersonly.

A, IMPORTANT

If CFM is lower than the design specified CFM, move
the lead from pressure tap 3 or 4 to pressure tap 2.
See figure 14. Refer to table 14 for minimum airflow
when electric heat is installed.
For 460/575V units, remove the isolation lead from speed
tap 2 before moving the wire to speed tap 2. Tape the
exposed end of the isolation lead and secure away from
other components.

A - Blower Operation
1- Set thermostat

Use tables 2 and 4, the measured static pressure,
and the factory-set blower speed to determine CFM

DIRECT DRIVE HIGH STATIC APPLICATIONS

or temperature

control device fan

switch to AUTO orON. With fan switch in ON position,
blower will operate continuously. With fan switch in
AUTO position, the blower will cycle with demand.
2- Blower and entire unit will be off when thermostat or
temperature control device system switch is in OFF

TERMINAL 1
REMAINS AT
COMMON

MOVE CONNECTOR TO
TERMINAL 2 FOR HIGH
STATIC APPLICATIONS

BLOWER
MOTOR

position.
B - Determining Unit CFM - Direct Drive Blowers
1- The following measurements must be made with air
filters in place.
2- With all access panels in place, measure static
pressure external to unit (from supply to return). Add
any additional air resistance for options and
accessories shown in table 13.

BLOWER
SHAFT

SPEED
TAPS

3- Use figure 13 to determine the factory set blower
speed.
BLOWER SPEED FACTORY SETTINGS
036 Units

024, 030,
048 Units

2 Hi
_1Com

3 Med
4 Low*

060 Units

2 Hi
_1Com

3 Meal*
4 Low

2
_1Com

460/575V UNITS:
Disconnect isolation lead before _
moving speed tap wire. Tape exposed end of isolation lead and secure away from other components.

Hi

3 Low*
4

Unused

FIGURE 14

*Factory Setting
FIGURE 13

Page 9

[_

I_1

1
2
3
4

C - DeterminingUnitCFM- Belt DriveBlowers

PULLEY ALIGNMENT

1- Thefollowingmeasurements
mustbemadewithair
filtersin place.

ALIGNED

2- Withall accesspanelsin place,measurestatic
pressureexternaltounit(fromsupplytoreturn).
3- MeasuretheindoorblowerwheelRPM.
_

I

MOTOR
PULLEY

Referring to tables 5 through 12, use static pressure
and RPM readings to determine unit CFM, Use table

BELT

13 when installing units with any of the options or
accessories listed, Refer to table 14 for minimum
airflow when electric heat is installed,

NOT ALIGNED

5- The blower RPM can be adjusted at the motor pulley,
Loosen Allen screw and turn adjustable pulley
clockwise to increase CFM. Turn counterclockwise to
decrease CFM See figure 16, Do not exceed
minimum and maximum number of pulley turns as
shown in table 1.
TABLE 1
MINIMUM AND MAXIMUM PULLEY ADJUSTMENT

t

BLOWER
PULLEY

FIGURE 15
1- Loosen four bolts securing motor base to mounting
frame. See figure 16,
2- To increase belt tension Slide blower motor downward to tighten the belt, This
increases the distance between the blower motor and

e,tt O'n.
turn O
Oaxi.
turn
en tO0en

A Section

D - Blower

No minimum

To loosen belt tension -

Belt Adjustment

Maximum life and wear can be obtained
proper pulley alignment
Tension

the blower housing,

5

Slide blower motor upward to loosen the belt, This
decreases the distance between the blower motor

from belts only if

and belt tension are maintained.

and the blower housing,

new belts after a 24-48 hour period of operation.

This will allow belt to stretch and seat grooves.

3- Tighten

Make sure

blower and motor pulley are aligned as shown in figure 15,

four

bolts securing

motor base

to the

mounting frame,

BLOWER ASSEMBLY
TO INCREASE
LOOSEN
TURN

ALLEN

CFM

SCREW

TO DECREASE

&

TURN

PULLEY CLOCKWISE

CFM

PULLEY

COUNTERCLOCKWISE

SIDE VIEW

MOTOR

LOOSEN ALLEN
SCREW TO
ADJUST CFM

_

ALLEN

'-.. 7
TO INCREASE

BELT TENSION

1-Loosen four bolts securing motor base to
mounting frame.
2-Slide the motor downward

to tighter the belt.

3-Tighten four bolts on motor base.

LOOSEN FOUR BOLTS AND SLIDE
BLOWER MOTOR DOWNWARD TO
TIGHTEN BELT

FIGURE 16
Page 10

E - Check Belt Tension

F-Field-Furnished

Overtensioning belts shortens
Check belt tension as follows:

belt and bearing

life.

Blower Drives

For field-furnished blower drives, use tables 5 through 12
to determine BHP and RPM required. Reference table 15
to determine the drive kit number.

1- Measure span length X. See figure 17.
2- Apply perpendicular force to center of span (X) with
enough pressure to deflect belt 1/64" for every inch of

MEASURE BELT TENSION

span length or 1.5mm per 100mm of span length.
Example: Deflection distance of a 40" span would be
40/64" or 5/8".
Example: Deflection
would be 6mm.
3_

distance

of a 400mm span

Measure belt deflection force. For a used belt, the
deflection force should be 5 Ibs. (35kPa). A new belt
deflection force should be 7 Ibs. (48kPa).
A force
below these
values
indicates
an
undertensioned belt. A force above these values
indicates an overtensioned

DEFLECTION 1/64" PER INCH OF SPAN
OR 1.5mm PER 100mm OF SPAN

FIGURE 17

belt.

Page 11

DIRECT
External Static
Pressure (in.

w.g.)

208 VOLTS

High I

DRIVE

Air Volume (cfm) at Various Blower Speeds
230 VOLTS

Med,um
I

2 and 2.5 Ton Standard Efficiency (Down-Flow)
0.0
1230
975
0.1
1220
940
0.2
1205
910
0.3
1185
880
0.4
1155
845
0.5
1115
800
0.6
1060
750
0.7
985
685
0.8
890
......
0.9
770
......
1.0
.........
2 and 2.5 Ton Standard
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0

Efficiency
1165
1155
1140
1125
1095
1055
1005
935
845
730
........

External Static
Pressure (in.

208 VOLTS

w.g.)

High

TABLE 2
BLOWER PERFORMANCE

(Horizontal)
925
895
865
835
800
760
710
650
.....
.....

Low

H,gh I Med,umI

845
815
775
730
680
-------

1425
1395
1375
1350
1320
1280
1225
1150
1050
920
760

800
770
735
695
645
----

1350
1325
1300
1280
1250
1215
1160
1090
995
875
720

THA024S and THA030S
1065
865
1055
830
1030
800
1000
770
955
740
905
700
850
655
785
--720
--645
--......

Air Volume (cfm) at Various
230 VOLTS
I Medium

3 and 4 Ton Basic Efficiency (Down-Flow)
0.0
2025
1635
0.1
1965
1605

I

Low

THA024S and THA030S
1125
910
1110
875
1085
845
1055
815
1010
780
955
740
895
690
830
--755
--680
--......

Low

High

Medium

1145
1145

2225
2140

Blower Speeds
460/575 VOLTS
I

Low

High

1845
1805

1330
1325

2125
2075

I Medium

I

Low

THA036B and THA048B
1750
1220
1715
1215

0.2

1910

1575

1135

2070

1770

1305

2025

1680

1205

0.3
0.4

1855
1800

1545
1500

1105
1055

2010
1950

1730
1680

1275
1225

1975
1915

1640
1595

1185
1155

0.5

1740

1445

995

1885

1620

1165

1850

1540

1105

0.6

1665

1370

910

1805

1540

1085

1770

1475

1040

0.7
0.8

1575
1460

1280
1165

810
---

1705
1580

1440
1315

990
---

1680
1570

1400
1310

950
---

0.9

1325

1025

---

1425

1155

---

1445

1210

---

1.0

1160

......

1230

......

1300

......

3 and 4 Ton Basic Efficiency
0.0
1920

(Horizontal)
1560

1090

2110

1760

1265

2125

THA036B and THA048B
1770
1265

0.1
0.2

1855
1805

1525
1490

1090
1075

2025
1955

1715
1675

1255
1235

2055
1990

1720
1675

1245
1230

0.3

1755

1455

1045

1900

1635

1205

1930

1635

1210

0.4
0.5

1700
1640

1415
1355

1000
940

1840
1775

1585
1525

1165
1100

1865
1795

1590
1535

1180
1130

0.6

1560

1280

855

1690

1440

1020

1715

1465

1050

0.7

1455

1180

750

1580

1330

920

1620

1370

935

0.8
0.9

1325
1155

1050
885

-----

1435
1245

1180
995

-----

1500
1365

1240
1075

-----

1.0

940

......

1000

......

1195

......

Page 12

DIRECT
3 Ton Standard Efficiency (Down-Flow)
0.0
1990
1625
0.1
1935
1595

DRIVE

TABLE 3
BLOWER PERFORMANCE

1145
1145

2175
2100

1825
1790

1330
1320

2100
2050

1735
1705

THA036S
1220
1215

0.2

1885

1565

1130

2040

1755

1300

2000

1665

1205

0.3
0.4

1830
1775

1530
1485

1095
1050

1980
1915

1710
1660

1265
1215

1945
1885

1625
1575

1180
1145

0.5

1710

1425

980

1850

1595

1150

1815

1520

1095

0.6
0.7

1630
1540

1350
1255

900
800

1765
1660

1510
1405

1070
975

1735
1640

1450
1375

1025
940

0.8

1425

1140

---

1535

1280

---

1530

1285

---

0.9

1285

1000

---

1375

1120

---

1405

1185

---

1.0

1125

......

1180

......

1260

......

1090
1090

2060
1990

1740
1700

1265
1255

2085
2020

1745
1700

THA036S
1260
1240

3 Ton Standard
0.0
0.1

Efficiency (Horizontal)
1890
1545
1830
1515

0.2

1780

1480

1070

1930

1660

1230

1960

1660

1225

0.3
0.4

1730
1675

1445
1400

1040
995

1870
1810

1615
1565

1200
1150

1900
1835

1620
1575

1205
1170

0.5

1610

1340

930

1740

1500

1090

1760

1515

1115

0.6

1530

1260

845

1650

1410

1010

1680

1440

1035

0.7
0.8

1420
1290

1160
1025

745
---

1535
1385

1295
1150

905
---

1580
1460

1340
1210

915
---

0.9

1120

865

---

1195

965

---

1320

1045

---

1.0

910

......

960

......

1155

......

Page 13

TABLE 4
DIRECT DRIVE BLOWER PERFORMANCE
External Static
Pressure (in.

w.g.)

Air Volume (cfm) at Various Blower Speeds
230 VOLTS
460/575 VOLTS

208 VOLTS

Hig.I Medium
I Low

4 Ton Standard Efficiency (Down-Flow)
0.0
1965
1615
0.1
1910
1585

Medium
I Low

I ed um
I Low

1150
1145

2135
2070

1810
1775

1325
1315

2075
2025

1725
1690

THA048S
1220
1215

0.2
0.3
0.4
0.5

1860
1810
1750
1685

1555
1515
1465
1405

1125
1090
1035
970

2010
1950
1890
1815

1740
1695
1635
1565

1290
1255
1200
1135

1975
1920
1855
1785

1650
1610
1555
1500

1200
1175
1135
1085

0.6
0.7
0.8

1600
1505
1390

1325
1230
1115

885
785
---

1730
1620
1490

1480
1375
1245

1055
955
---

1700
1605
1495

1430
1350
1260

1015
925
---

0.9
1.0

1250
1085

975
......

---

1330
1135

1085
......

---

1365
1220

1160
......

---

1090

2025

1725

1260

2055

1730

THA048S
1255

4 Ton Standard
0.0

Efficiency (Horizontal)
1865
1535

0.1
0.2
0.3

1810
1765
1710

1505
1470
1430

1085
1065
1035

1960
1905
1845

1685
1645
1600

1250
1225
1190

1995
1935
1870

1685
1650
1605

1240
1220
1200

0.4
0.5
0.6
0.7

1655
1585
1495
1390

1385
1320
1240
1135

985
915
835
730

1785
1710
1615
1495

1545
1475
1380
1265

1140
1075
990
890

1805
1730
1645
1545

1555
1495
1410
1310

1160
1100
1015
895

0.8
0.9
1.0

1250
1080
875

1000
835
......

-----

1340
1150
915

1115
930
......

-----

1425
1285
1115

1175
1010
......

-----

External Static
Pressure (in.

208 VOLTS

High I

5 Ton Basic Efficiency (Down-Flow)
0.0
2180

230 VOLTS

4601575 VOLTS

Low

High I

Low

High I

Low

1670

2360

1970

2300

THA060B
1745

0.1
0.2
0.3

2145
2110
2080

1655
1650
1640

2325
2290
2250

1935
1910
1880

2180
2090
2035

1710
1690
1680

0.4
0.5
0.6

2045
2005
1960

1630
1610
1580

2210
2165
2110

1855
1825
1785

1995
1965
1940

1670
1655
1635

0.7
0.8
0.9
1.0

1905
1835
1750
1645

1540
1480
1405
---

2045
1970
1875
1765

1735
1670
1590
---

1905
1855
1780
1670

1600
1545
1465
---

1600
1600

2235
2195

1890
1870

2285
2225

THA060B
1800
1800

5 Ton Basic Efficiency (Horizontal)
0.0
2070
0.1
2030
0.2
0.3
0.4
0.5

1990
1945
1900
1850

1595
1580
1555
1525

2155
2110
2055
2000

1845
1815
1775
1725

2170
2120
2070
2020

1790
1775
1745
1710

0.6
0.7
0.8
0.9

1795
1730
1650
1560

1480
1425
1360
1280

1930
1855
1770
1675

1670
1610
1535
1450

1965
1895
1820
1730

1660
1600
1525
1440

1.0

1460

---

1565

---

1620

---

Page 14

BELT DRIVE
0.10 to 0.80 in. w.g.
Air
Volume
(cfm)

0.10
RPM
BHP
Field

TABLE
BLOWER

5
PERFORMANCE

3 Ton Basic Efficiency (Down-Flow)
0.20
RPM
BHP

0.30
RPM
BHP

Furnished

Low

Static

External Static (in.w.g.)
0.40
0.50
RPM
BHP
RPM
BHP
- Drive

THA036B
0.60
RPM
BHP

0.70
RPM
BHP

Kit #1

0.80
RPM

BHP

Drive Kit
#5

9OO

480

0.10

590

0.15

690

0.25

780

0.30

860

0.40

935

0.55

1005

0.65

1065

0.75

1000

510

0.10

610

0.20

705

0.25

790

0.35

870

0.45

945

0.55

1010

0.65

1075

9.80

1100

540

0.15

635

0.20

720

0.30

805

0.35

880

0.45

955

0.60

1020

0.70

1085

0.85

1200

570

0.15

660

0.25

740

0.30

820

0.40

895

0.50

965

0.60

1030

0.75

1095

9.85

1300

605

0.20

685

0.25

765

0.35

840

0.45

910

0.55

980

0.65

1045

0.80

1105

0.90

1400

640

0.25

715

0.30

790

0.40

860

0.50

930

0.60

995

0.70

1055

0.85

1115

9.95

1500

675

0.30

745

0.35

815

0.45

880

0.55

950

0.65

1010

0.75

1070

0.90

1130

1.00

0.90 to 1.60 in. w.g.
Air
Volume
0.90
(cfm)
RPM
BHP
High Static

THA036B

3 Ton Basic Efficiency (Down-Flow)
External Static (in.w.g.)
1.0

I

1.10

RPM
BHP I RPM
- Drive Kit #5

1.20

1.40

1.30

BHP

RPM

BHP

RPM

BHP

RPM
Field

BHP

1.50
RPM

1.60

BHP

RPM

BHP
1.95

Furnished

900

1125

0.90

1185

1.00

1240

1.15

1290

1.30

1340

1.45

1390

1.60

1435

1.75

1480

1000

1135

0.90

1190

1.05

1245

1.20

1300

1.35

1350

1.50

1395

1.65

1440

1.80

1485

1.95

1100

1145

0.95

1200

1.10

1255

1.25

1305

1.40

1355

1.55

1405

1.70

1450

1.85

1495

2.05

1200

1155

1.00

1210

1.15

1265

1.30

1315

1.45

1365

1.60

1410

1.75

1460

1.95

1505

2.10

1300

1165

1.05

1220

1.20

1270

1.35

1325

1.50

1375

1.65

1420

1.80

1465

2.00

1510

2.15

1400

1175

1.10

1230

1.25

1280

1.40

1335

1.55

1380

1.70

1430

1.90

1475

2.05

1520

2.25

1500

1185

1.15

1240

1.30

1295

1.45

1345

1.60

1390

1.80

1440

1.95

1485

2.15

1530

2.30

0.10 to 0.80 in. w.g.
Air
Volume
(cfm)

0.10
RPM
Field

BHP

0.20
RPM

External Static (in.w.g.)
0.40
0.50

0.30

BHP

RPM

BHP

Furnished

9OO

475

0.10

1000

510

1100

545

1200
1300

THA036B

3 Ton Basic Efficiency (Horizontal)

RPM

BHP

Low

Static

RPM

BHP

0.60

0.70

0.80

RPM

BHP

RPM

BHP

RPM

BHP

- Drive Kit #1

565

0.15

650

0.20

725

0.30

800

0.35

870

0.45

930

0.55

990

0.65

0.10

590

0.15

665

0.25

740

0.30

815

0.40

880

0.50

940

0.60

1000

0.70

0.15

615

0.20

690

0.25

760

0.35

825

0.40

890

0.50

950

0.60

1010

0.75

585

0.20

650

0.25

715

0.30

780

0.40

845

0.45

905

0.55

965

0.65

1020

0.75

625

0.25

680

0.30

740

0.35

800

0.40

860

0.50

920

0.60

980

0.70

1030

0.80

1400

665

0.30

715

0.35

770

0.40

830

0.50

885

0.55

940

0.65

995

0.75

1045

0.85

1500

705

0.35

750

0.40

805

0.45

855

0.55

910

0.60

960

0.70

1010

0.80

1065

0.90

0.90 to 1.60 in. w.g.
Air
Volume
0.90
(cfm)
RPM
BHP
High Static
9OO
1045
0.75

THA036B

3 Ton Basic Efficiency (Horizontal)
External Static (in.w.g.)
1.0

I

1.10

RPM
BHP I RPM
- Drive Kit #5
1100
0.90
1150

1.20

1.30

1.40

1.50

1.60
RPM

BHP

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

1.00

1195

1.10

1240

1.25

1285

1.40

1325

1.50

1365

1.65

Field

1000

1055

0.80

1105

0.90

1155

1.05

1205

1.15

1250

1.30

1295

1.45

1335

1.55

1375

1.70

1100

1065

0.85

1115

0.95

1165

1.10

1215

1.20

1260

1.35

1305

1.50

1345

1.60

1385

1.75

1200

1075

0.90

1125

1.00

1175

1.15

1220

1.25

1270

1.40

1310

1.55

1355

1.70

1395

1.80

1300

1085

0.90

1135

1.05

1185

1.20

1230

1.30

1275

1.45

1320

1.60

1365

1.75

1405

1.90

1400

1100

1.00

1150

1.10

1195

1.25

1240

1.35

1285

1.50

1330

1.65

1370

1.80

1415

1.95

1500

1115

1.05

1160

1.15

1210

1.30

1255

1.45

1295

1.55

1340

1.70

1380

1.85

1420

2.00

Page 15

BELT DRIVE
0.10 to 1.00 in. w.g.
Air
Volume
(cfm)

Field

BHP

6
PERFORMANCE
THA036S

3 Ton Standard Efficiency (Down-Flow)
External Static (in.w.g.)

0.10
RPM

TABLE
BLOWER

0.20
RPM

0.30

BHP

RPM

Furnished

0.40

BHP

RPM

0.50

BHP

0.60

0.70

0.80

RPM

BHP

RPM

BHP

RPM

BHP

BHP

Low

Static

9OO

485

0.10

595

0.15

690

0.20

780

0.30

860

0.40

930

0.50

1000

0.60

1065

0.75

1000

520

0.10

615

0.20

705

0.25

790

0.35

870

0.45

945

0.55

1010

0.65

1075

0.75

1100

550

0.15

640

0.20

725

0.30

805

0.35

885

0.45

955

0.55

1020

0.70

1085

0.80

1200

585

0.20

665

0.25

745

0.30

825

0.40

900

0.50

965

0.60

1030

0.70

1095

0.85

1300

620

0.20

695

0.30

770

0.35

845

0.45

915

0.55

980

0.65

1045

0.75

1105

0.90

1400

660

0.25

730

0.35

795

0.40

865

0.50

935

0.60

995

0.70

1060

0.80

1120

0.95

1500

695

0.30

760

0.40

825

0.45

890

0.55

955

0.65

1015

0.75

1075

0.85

1135

1.00

0.90 to 1.60 in. w.g.
Air
Volume
0.90
(cfm)
RPM
BHP
High Static
900
1125
0.85

- Drive Kit #1

RPM
Kit 5

THA036S

3 Ton Standard Efficiency (Down-Flow)
External Static (in.w.g.)
1.0

I

1.10

RPM
BHP I RPM
- Drive Kit #5
1180
1.00
1230

1.20

BHP

RPM

1.40

1.30

BHP

RPM

BHP

RPM
Field

BHP

1.50
RPM

1.60

BHP

RPM

BHP

Furnished

1.10

1285

1.25

1330

1.35

1380

1.50

1425

1.65

1465

1.80

1000

1130

0.90

1190

1.00

1240

1.15

1295

1.30

1340

1.40

1390

1.60

1435

1.75

1475

1.85

1100

1140

0.90

1200

1.05

1250

1.20

1300

1.35

1350

1.50

1400

1.65

1445

1.80

1485

1.95

1200

1150

0.95

1210

1.10

1260

1.25

1310

1.40

1360

1.55

1410

1.70

1455

1.85

1495

2.00

1300

1165

1.00

1220

1.15

1270

1.30

1320

1.45

1370

1.60

1415

1.75

1465

1.90

1505

2.05

1400

1175

1.05

1230

1.20

1280

1.35

1330

1.50

1380

1.65

1425

1.80

1470

1.95

1515

2.15

1500

1190

1.15

1240

1.25

1295

1.40

1345

1.55

1390

1.70

1435

1.90

1480

2.05

1525

2.20

0.10 to 0.80 in. w.g.
Air
Volume
0.10
(cfm)
RPM
BHP
Field

THA036S

3 Ton Standard Efficiency (Horizontal)
0.20
RPM

External Static (in.w.g.)
0.40
0.50

0.30

BHP

RPM

BHP

Furnished

RPM

BHP

Low Static

RPM

BHP

0.60

0.70

0.80

RPM

BHP

RPM

BHP

RPM

BHP

- Drive Kit #1

900

480

0.10

570

0.15

655

0.20

735

0.30

810

0.35

875

0.45

940

0.55

1000

0.65

1000

520

0.15

595

0.15

675

0.25

750

0.30

820

0.40

890

0.50

950

0.60

1010

0.70

1100

555

0.15

625

0.20

695

0.25

765

0.35

835

0.45

900

0.50

960

0.60

1020

0.75

1200

595

0.20

660

0.25

725

0.30

790

0.40

850

0.45

915

0.55

975

0.65

1030

0.75

1300

635

0.25

690

0.30

750

0.35

810

0.40

870

0.50

930

0.60

990

0.70

1045

0.80

1400

675

0.30

730

0.35

785

0.40

840

0.50

895

0.55

950

0.65

1005

0.75

1060

0.85

1500

720

0.35

765

0.40

815

0.45

870

0.55

920

0.60

970

0.70

1025

0.80

1075

0.95

0.90 to 1.60 in. w.g.
Air
Volume
0.90
(cfm)
RPM
BHP
High Static
9OO
1055
0.75

THA036S

3 Ton Standard Efficiency (Horizontal)
External Static (in.w.g.)
1.0

I

1.10

RPM
BHP I RPM
- Drive Kit #5
1105
0.90
1155

1.20

BHP

RPM

BHP

1.30
RPM
BHP

1.40
RPM
BHP

1.50
RPM
BHP

1.00

1200

1.10

1245

1.25

1285

1.35

1325

1.50

1.60
RPM

BHP

Field
1365

1.60

1000

1065

0.80

1115

0.90

1165

1.05

1210

1.15

1255

1.30

1300

1.40

1340

1.55

1380

1.70

1100

1075

0.85

1125

0.95

1175

1.10

1220

1.20

1265

1.35

1310

1.50

1350

1.60

1395

1.75

1200

1085

0.90

1135

1.00

1185

1.15

1235

1.25

1280

1.40

1320

1.55

1365

1.70

1405

1.85

1300

1095

0.95

1145

1.05

1195

1.20

1245

1.30

1290

1.45

1330

1.60

1375

1.75

1415

1.90

1400

1110

1.00

1160

1.10

1210

1.25

1255

1.40

1300

1.50

1340

1.65

1385

1.80

1425

1.95

1500

1125

1.05

1175

1.15

1220

1.30

1265

1.45

1310

1.60

1355

1.75

1395

1.85

1435

2.05

Page 16

BELT DRIVE

0.10to 0.80
Air
Volume
(cfm)
1200
1300
1400
1500
1600
1700
1800
1900
2000

in. w.g.

0.10
0.20
RPM
BHP
RPM
BHP
Field Furnished
570
0.15
655
0.20
605
0.20
680
0.25
640
0.25
710
0.30
675
0.25
740
0.35
710
0.30
775
0.40
745
0.40
805
0.45
785
0.45
840
0.50
820
860

0.50
0.60

875
910

0.90 to 1.60 in. w.g.
Air
Volume
0.90
(cfm)

0.60
0.65

1.00
RPM
- Drive
1190
1200
1210
1225
1235

TABLE
BLOWER

7
PERFORMANCE

4 Ton Basic Efficiency (Down-Flow)
External Static (in.w.g.)
0.30
0.40
0.50
0.60
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
Low Static - Drive Kit #2
735
0.30
815
0.35
885
0.45
955
0.55

0.70
RPM
BHP

0.80
RPM
BHP

1015

0.65

1075

0.75

760
785
810
835
865
895

0.30
0.35
0.40
0.45
0.50
0.60

830
855
875
900
925
955

0.40
0.45
0.50
0.55
0.60
0.70

900
920
940
960
985
1010

0.50
0.55
0.60
0.65
0.70
0.80

965
985
1000
1020
1040
1065

0.60
0.65
0.70
0.75
0.80
0.90

1030
1045
1060
1080
1095
1115

0.70
0.75
0.80
0.85
0.90
1.00

1090
1100
1115
1135
1150
1170

0.80
0.85
0.90
0.95
1.05
1.10

930
960

0.65
0.75

980
1010

0.75
0.85

1035
1065

0.85
0.95

1090
1115

0.95
1.05

1140
1165

1.10
1.15

1190
1210

1.20
1.30

THA048B

4 Ton Basic Efficiency (Down-Flow)
External Static (in.w.g.)
1.10
1.20
1.30

I

THA048B

BHP I RPM
Kit #6
1.00
1240
1.05
1250
1.10
1260
1.15
1275
1.20
1285

BHP

RPM

BHP

RPM

BHP

RPM

1.40
BHP

1.10
1.15
1.20
1.30
1.35

1290
1300
1310
1325
1335

1.25
1.30
1.35
1.40
1.50

1340
1350
1360
1370
1380

1.35
1.45
1.50
1.55
1.60

1.50
1.55
1.65
1.70
1.75
1.85

1.50
1.60
RPM
BHP
RPM
BHP
Field Furnished
1430
1.65
1475
1.80
1440
1.70
1485
1.85
1450
1.75
1490
1.90
1460
1.85
1500
2.00
1470
1.90
1515
2.10
1480
2.00
1525
2.15

1.90
2.00
2.10

1495
1505
1520

1200
1300
1400
1500
1600

RPM
BHP
High Static
1135
0.85
1145
0.90
1160
0.95
1170
1.00
1185
1.10

1700

1200

1.15

1255

1.30

1300

1.40

1350

1.55

1395

1.70

1385
1395
1405
1415
1425
1440

1800
1900
2000

1220
1240
1260

1.25
1.30
1.40

1270
1285
1305

1.35
1.45
1.55

1315
1335
1350

1.50
1.60
1.70

1365
1380
1395

1.65
1.75
1.80

1410
1420
1440

1.80
1.85
2.00

1450
1465
1480

0.10 to 0.80 in. w.g.
Air
Volume
0.10
0.20
(cfm)
RPM
BHP
RPM
BHP
Field Furnished
1200
580
0.15
645
0.20
1300
620
0.20
675
0.25
1400
660
0.25
710
0.30

4 Ton Basic Efficiency (Horizontal)
External Static (in.w.g.)
0.30
0.40
0.50
RPM
BHP
RPM
BHP
RPM
BHP
Low Static - Drive Kit #2
710
0.25
770
0.35
835
0.40
735
0.30
795
0.35
855
0.45
765
0.35
820
0.40
875
0.50

2.10
2.15
2.25

0.60
RPM
BHP

0.70
RPM
BHP

0.80
RPM
BHP

895
910
930

0.50
0.50
0.55

950

0.55

965

0.60

1005
1020
1035

0.65
0.70
0.75

1050
1070
1090
1115
1140

0.80
0.85
0.95
1.00
1.10

985

0.65

700
740
780
820
860

0.30
0.35
0.45
0.50
0.60

745
785
820
860
900

0.35
0.40
0.50
0.55
0.65

800
830
865
900
940

0.40
0.45
0.55
0.60
0.70

850
880
910
945
980

0.50
0.55
0.60
0.70
0.80

900
930
955
985
1020

0.55
0.60
0.70
0.75
0.85

950
975
1000
1030
1060

0.60
0.70
0.75
0.85
0.95

1000

0.70

1025

0.80

1045

0.85

1070

0.90

1100

1.00

2000

905

0.70

940

0.75

975

0.80

1015

0.90

1050

0.95

1090

1.05

1130

1.10

1.00
RPM
BHP
High Static
1110
0.85
1120
0.90

4 Ton Basic Efficiency (Horizontal)
External Static (in.w.g.)
I
1.10
1.20
1.30
I RPM
BHP
RPM
BHP
RPM
BHP
- Drive Kit #6
1155
0.95
1205
1.05
1245
1.15
1165
1.00
1210
1.10
1255
1.20

2.25
2.35
2.45

THA048B

1500
1600
1700
1800
1900

0.90 to 1.60 in. w.g.
Air
Volume
0.90
(cfm)
RPM
BHP
Kit 2
1200
1060
0.75
1300
1070
0.80
1400
1085
0.85
1500
1100
0.90

1535
1550
1560

1165
1.20
THA048B

1.40
RPM
BHP

1.50
RPM
BHP

1.60
RPM
BHP

1290
1300

1.30
1.35

1330
1340

1.40
1.45

1370
1380

1.55
1.60

1130
1145

0.95
1.00

1180
1190

1.05
1.10

1225
1235

1.15
1.20

1265
1280

1.25
1.35

1310
1320

1.40
1.45

1350
1360

1.50
1.60

1390
1400

1.65
1.70

1600
1700
1800
1900

1115
1135
1155
1180

0.95
1.05
1.10
1.20

1160
1180
1200
1220

1.05
1.15
1.20
1.30

1205
1220
1240
1260

1.15
1.25
1.35
1.40

1250
1265
1280
1300

1.30
1.35
1.45
1.55

1290
1305
1320
1340

1.40
1.50
1.55
1.65

1330
1345
1360
1375

1.50
1.60
1.70
1.75

1370
1385
1400
1415

1.65
1.75
1.80
1.90

1410
1425
1435
1450

1.80
1.85
1.95
2.05

2000

1205

1.30

1245

1.40

1280

1.50

1320

1.65

1355

1.75

1395

1.90

1430

2.00

1465

2.15

Page 17

0.10to 0.80
Air
Volume
(cfm)
1200
1300
1400
1500
1600
1700
1800
1900
2000

in. w.g.

0.10
0.20
RPM
BHP
RPM
BHP
Field Furnished
590
0.15
670
0.20
630
0.20
700
0.25
670
0.25
735
0.30
705
0.30
765
0.35
745
785
825
865
910

0.35
0.40
0.50
0.55
0.65

0.90 to 1.60 in. w.g.
Air
Volume
0.90
(cfm)
RPM
BHP
High Static
1200
1135
0.80
1300
1145
0.85

800
840
875
915
950

0.40
0.50
0.55
0.65
0.70

0.60
RPM
BHP

0.70
RPM
BHP

0.80
RPM
BHP

955
970
990

0.50
0.55
0.60

1020
1035
1050

0.60
0.65
0.70

1080
1090
1105

0.70
0.75
0.80

830
860
895
925
960
995

1010
1030
1055
1080
1105
1135

0.65
0.70
0.80
0.85
0.95
1.05

1070
1085
1110
1130
1155
1180

0.75
0.80
0.90
0.95
1.05
1.15

1125
1140
1160
1180
1205
1230

0.85
0.90
1.00
1.05
1.15
1.25

0.40
0.50
0.55
0.60
0.70
0.80

890

0.50

920

0.55

945

0.60

980

0.70

1010

0.80

1045

0.90

950
975
1000
1030
1060
1090

0.55
0.65
0.70
0.80
0.85
0.95

THA048S

THA048S

4 Ton Standard Efficiency (Down-Flow)
External Static (in.w.g.)
1.10
1.20
1.30

BHP I RPM
Kit #6
0.90
1235
0.95
1250

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

1.00
1.05

1285
1300

1.15
1.20

1330
1345

1.25
1.30

1375
1390

1.35
1.45

1.50
1.55
1.60
1.70

1.60
RPM
BHP
Field
1460
1.60
1475
1.70
1485
1.75
1500
1.85

1.00
RPM
- Drive
1185
1200

TABLE 8
BELT DRIVE BLOWER PERFORMANCE
4 Ton Standard Efficiency (Down-Flow)
External Static (in.w.g.)
0.30
0.40
0.50
RPM
BHP
RPM
BHP
RPM
BHP
Low Static - Drive Kit #2
745
0.30
820
0.35
890
0.45
770
0.30
840
0.40
910
0.45
800
0.35
865
0.45
930
0.50

I

1.40

1.50

1400
1500

1160
1175

0.90
0.95

1215
1225

1.00
1.05

1265
1275

1.15
1.20

1310
1325

1.25
1.30

1355
1370

1.35
1.45

1400
1415

1.50
1.55

1420
1435
1445
1460

1600
1700
1800
1900

1195
1210
1230
1250

1.05
1.10
1.20
1.25

1245
1260
1275
1295

1.15
1.20
1.30
1.40

1290
1305
1325
1340

1.25
1.35
1.40
1.50

1340
1355
1370
1385

1.40
1.45
1.55
1.65

1385
1400
1415
1430

1.50
1.60
1.70
1.75

1430
1440
1455
1470

1.65
1.70
1.80
1.90

1470
1485
1500
1515

1.75
1.85
1.95
2.05

1510
1525
1540
1555

2000

1275

1.35

1320

1.50

1360

1490

2.00

1530

2.15

1570
2.30
THA048S

0.60
RPM
BHP

0.70
RPM
BHP

0.80
RPM
BHP

915
935
955
975

0.50
0.55
0.60
0.65

975
990
1005
1025

0.60
0.60
0.65
0.75

1030
1045
1060
1075

0.70
0.70
0.75
0.80

1.60
1405
1.75
1445
1.85
4 Ton Standard Efficiency (Horizontal)
External Static (in.w.g.)
0.30
0.40
0.50
RPM
BHP
RPM
BHP
RPM
BHP
Low Static - Drive Kit #2
725
0.25
790
0.35
855
0.40
755
0.30
815
0.40
875
0.45
790
0.35
845
0.45
900
0.50
820
0.40
870
0.50
925
0.55

0.10 to 0.80 in. w.g.
Air
Volume
0.10
0.20
(cfm)
RPM
BHP
RPM
BHP
Field Furnished
1200
600
0.20
660
0.20
1300
640
0.20
695
0.25
1400
685
0.25
735
0.30
1500
725
0.35
770
0.35

1.90
2.00
2.10
2.20

1600
1700
1800
1900

770
810
855
900

0.40
0.45
0.55
0.65

810
850
890
935

0.45
0.50
0.60
0.70

855
895
930
970

0.50
0.55
0.65
0.75

905
935
970
1010

0.55
0.65
0.70
0.80

950
980
1015
1050

0.60
0.70
0.80
0.90

1000
1030
1055
1090

0.70
0.80
0.85
0.95

1050
1075
1100
1130

0.80
0.85
0.95
1.05

1095
1120
1145
1170

0.90
0.95
1.05
1.15

2000

940

0.75

975

0.80

1010

0.85

1045

0.90

1085

1.00

1120

1.05

1160

1.15

1195

1.25

0.90 to 1.60 in. w.g.
Air
Volume
0.90
(cfm)
RPM
BHP
High Static
1200
1080
0.75
1300
1095
0.80
1400
1110
0.85
1500
1125
0.90

4 Ton Standard

1.0
RPM
- Drive
1130
1145
1160
1175

I

Efficiency

1.10

THA048S

(Horizontal)

External Static (in.w.g.)
1.20
1.30

1.40

1.50

1.60

BHP I RPM
Kit #6
0.85
1180
0.90
1190
1.00
1205
1.05
1220

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

1.00
1.00
1.10
1.15

1225
1235
1250
1265

1.10
1.15
1.20
1.25

1265
1280
1295
1305

1.20
1.25
1.30
1.35

1305
1320
1335
1350

1.30
1.35
1.45
1.50

1345
1360
1375
1390

1.40
1.50
1.55
1.65

1.55
1.60
1.70
1.75
1.80
1.90

1600
1700

1145
1165

1.00
1.05

1190
1210

1.10
1.15

1235
1255

1.20
1.30

1280
1295

1.35
1.40

1320
1335

1.45
1.50

1365
1380

1.60
1.65

1405
1415

1.70
1.75

1385
1400
1415
1430
1440
1455

1800
1900

1185
1210

1.15
1.25

1230
1250

1.25
1.35

1270
1290

1.35
1.45

1315
1330

1.50
1.55

1355
1370

1.60
1.70

1395
1410

1.75
1.80

1430
1450

1.85
1.95

1470
1485

2.00
2.10

2000

1235

1.35

1275

1.45

1315

1.55

1355

1.70

1390

1.80

1430

1.95

1465

2.05

1500

2.20

Page 18

BELT DRIVE

0.10to 0.80
Air
Volume
(cfm)
1600
1700

in. w.g.

0.10
0.20
RPM
BHP
RPM
BHP
Field Furnished
705
0.30
765
0.35
740
0.35
800
0.40

TABLE
BLOWER

9
PERFORMANCE

5 Ton Basic Efficiency (Down-Flow)
External Static (in.w.g.)
0.30
0.40
0.50
0.60
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
Low Static - Drive Kit #3
825
0.40
880
0.50
935
0.55
990
0.60

THA060B
0.70
RPM
BHP

0.80
RPM
BHP

1040

0.70

1090

0.75

1800
1900
2000
2100
2200

780
815
855
890
930

0.40
0.50
0.55
0.65
0.70

835
870
905
940
975

0.50
0.55
0.60
0.70
0.80

855
885
920
950
985
1020

0.50
0.55
0.60
0.70
0.80
0.85

910
940
970
1000
1030
1065

0.55
0.60
0.70
0.75
0.85
0.95

960
990
1015
1045
1075
1105

0.60
0.70
0.75
0.85
0.95
1.05

1010
1035
1065
1090
1120
1145

0.70
0.75
0.85
0.90
1.00
1.10

1060
1085
1110
1135
1160
1190

0.75
0.85
0.90
1.00
1.10
1.20

1110
1130
1155
1180
1205
1230

0.85
0.90
1.00
1.10
1.20
1.30

2300
2400

970
1005

0.80
0.90

1010
1050

0.90
1.00

1055
1090

0.95
1.10

1095
1130

1.05
1.15

1135
1170

1.15
1.25

1175
1210

1.20
1.35

1215
1245

1.30
1.45

1255
1285

1.40
1.55

0.90 to 1.60 in. w.g.
Air
Volume
0.90
(cfm)
RPM
BHP
Low Static
#3
1600
1135
0.85
1700
1155
0.90
1800
1175
1.00
1900
1200
1.10
2000
2100
2200
2300
2400

1220
1245
1270
1295
1320

1.15
1.25
1.40
1.50
1.60

1.00
RPM
BHP
- Drive Kit

5 Ton Basic Efficiency (Down-Flow)
External Static (in.w.g.)
1.10
1.20
1.30
RPM
BHP
RPM
BHP
RPM
BHP
High Static

1275
1290

1.10
1.20

1315
1330

1.20
1.30

1355
1370

1.30
1.35

1400
1410

1.40
1.45

1440
1450

1.50
1.60

1220
1240

1.10
1.15

1265
1280

1.15
1.25

1305
1325

1.25
1.35

1345
1365

1.35
1.45

1385
1400

1.45
1.55

1425
1440

1.55
1.65

1465
1480

1.65
1.75

1260
1285
1310
1335
1360

1.25
1.35
1.50
1.60
1.70

1300
1325
1345
1370
1395

1.35
1.45
1.55
1.70
1.80

1340
1360
1385
1405
1430

1.45
1.55
1.65
1.80
1.90

1380
1400
1420
1445
1465

1.55
1.65
1.75
1.90
2.05

1420
1440
1460
1480
1500

1.65
1.75
1.90
2.00
2.15

1455
1475
1495
1515
1535

1.75
1.85
2.00
2.10
2.25

1495
1510
1530
1550
1570

1.85
1.95
2.10
2.20
2.35

5 Ton Basic Efficiency (Horizontal)
External Static (in.w.g.)
0.30
0.40
0.50
0.60
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
Low Static - Drive Kit #3
825
0.45
875
0.50
925
0.55
975
0.65

0.70
RPM
BHP

0.80
RPM
BHP

1025

0.70

1070

0.80

0.50
0.60
0.65
0.75
0.85
0.95
1.10

905
940
975
1010
1045
1080
1115

0.55
0.65
0.75
0.80
0.90
1.05
1.15

955
985
1015
1045
1080
1115
1150

0.65
0.70
0.80
0.90
1.00
1.10
1.20

1000
1025
1055
1085
1115
1150
1185

0.70
0.80
0.85
0.95
1.05
1.20
1.30

1045
1070
1095
1125
1155
1185
1215

0.80
0.85
0.95
1.05
1.15
1.25
1.35

1090
1115
1140
1165
1190
1220
1250

0.85
0.95
1.05
1.10
1.20
1.35
1.45

1.20

1155

1.30

1185

1.35

1215

1.45

1250

1.50

1280

1.60

0.50
0.55
0.65
0.75
0.85
0.95

855
895
935
970
1010
1050

0.55
0.60
0.70
0.80
0.90
1.00

2400

1065

1.10

1095

1.15

1125

2400

1315

1.70

- Drive Kit #7

1.00
1.10

815
855
895
940
980
1020

1.00
1.10
1.20
1.30
1.40
1.55

1.60
RPM
BHP

1230
1245

1800
1900
2000
2100
2200
2300

1155
1180
1205
1230
1255
1285

1.50
RPM
BHP

0.95
1.00

860
895
935
970
1005
1045
1085

1800
1900
2000
2100
2200
2300

1.40
RPM
BHP

1185
1200

0.10 to 0.80 in. w.g.
Air
Volume
0.10
0.20
(cfm)
RPM
BHP
RPM
BHP
Field Furnished
1600
735
0.35
780
0.40
1700
775
0.40
815
0.45

0.90 to 1.60 in. w.g.
Air
Volume
0.90
(cfm)
RPM
BHP
Low Static
1600
1120
0.90
1700
1135
0.95

THA060B

5 Ton Basic Efficiency (Horizontal)
External Static (in.w.g.)
1.20
1.30
1.00
I
1.10
RPM
BHP
RPM
BHP
RPM
BHP I RPM
BHP
- Drive Kit #3
High Static
- Drive
Kit #7
1165
1.00
1210
1.10
1255
1.20
1295
1.30
1180
1.05
1225
1.15
1270
1.25
1310
1.35
1200
1.10
1240
1.20
1285
1.30
1325
1.45
1220
1.20
1260
1.30
1300
1.40
1340
1.50
1245
1.30
1280
1.40
1320
1.50
1360
1.60
1265
1.40
1305
1.50
1340
1.60
1380
1.70
1290
1.50
1330
1.60
1365
1.70
1400
1.85
1320
1.65
1355
1.75
1385
1.85
1420
1.95
1345

1.75

1380

1.90

1415

2.00
Page 19

1445

2.10

THA060B

THA060B
1.40
RPM
BHP

1.50
RPM
BHP

1.60
RPM
BHP

1340
1350
1365
1380
1395
1415
1435
1455

1.40
1.45
1.55
1.65
1.70
1.80
1.95
2.05

1380
1390
1405
1415
1435
1450
1470
1490

1.50
1.60
1.65
1.75
1.85
1.95
2.05
2.20

1420
1430
1440
1455
1470
1485
1505
1520

1.65
1.70
1.75
1.85
1.95
2.05
2.15
2.30

1480

2.20

1510

2.30

1545

2.45

BELT DRIVE

0.10to 0.80
Air
Volume
(cfm)
1600
1700
1800
1900
2000
2100
2200
2300
2400

in. w.g.

0.10
0.20
RPM
BHP
RPM
BHP
Field Furnished
675
0.30
730
0.35
710
0.35
760
0.40
745
0.45
795
0.50
780
0.50
830
0.55
820
855
890
930
965

0.60
0.65
0.75
0.85
0.95

10
PERFORMANCE

5 Ton Standard Efficiency (Down-Flow)
External Static (in.w.g.)
0.30
0.40
0.50
RPM
BHP
RPM
BHP
RPM
BHP
Low Static - Drive Kit #3
785
0.40
835
0.45
885
0.50
815
0.45
860
0.50
910
0.60
845
0.55
890
0.60
935
0.65
875
0.60
920
0.65
965
0.75

905
0.70
950
0.75
990
0.80
940
0.80
980
0.85
1020
0.90
970
0.85
1010
0.95
1050
1.00
1005
1.00
1045
1.05
1080
1.10
1040
1.10
1075
1.15
1115
1.25
5
Ton
Standard
Efficiency
(Down-Flow)
0.90 to 1.60 in. w.g.
Air
External Static (in.w.g.)
Volume
1.30
0.90
1.00
I
1.10
1.20
(cfm)
RPM
BHP
RPM
BHP
RPM
BHP I RPM
BHP
RPM I BHP
Low Static - Drive Kit #3
High Static
1600
1075
0.80
1120
0.85
1160
0.95
1200
1.05
1240
1.10
1700
1090
0.85
1135
0.95
1175
1.00
1215
1.10
1255
1.20
1800
1110
0.95
1155
1.00
1195
1.10
1230
1.20
1270
1.25
1900
1135
1.05
1170
1.10
1210
1.20
1250
1.25
1285
1.35
2000
1155
1.10
1195
1.20
1230
1.30
1270
1.35
1305
1.45
2100
1180
1.20
2200
1200
1.30
2300
1225
1.45
2400
1255
1.55
0.10 to 0.80 in. w.g.
Air
Volume
0.10
(cfm)
RPM
BHP
Field
1600
785
0.40
1700
825
0.45

865
900
935
970
1005

TABLE
BLOWER

0.65
0.70
0.80
0.90
1.05

THA060S
0.60
RPM
BHP

0.70
RPM
BHP

0.80
RPM
BHP

935
960
980
1010

0.60
0.65
0.70
0.80

985
1005
1025
1050

0.65
0.70
0.80
0.85

1030
1050
1070
1090

1035
1060
1090
1120
1150

0.90
1.00
1.10
1.20
1.30

1075
1100
1130
1155
1185

0.95
1.05
1.15
1.25
1.40

1115
1.05
1140
1.15
1165
1.25
1190
1.35
1220
1.50
THA060S

1.50
RPM
BHP

1.60
RPM
BHP

1.40
RPM
BHP

- Drive Kit #7
1280
1.20
1320

0.70
0.80
0.85
0.95

1.30

1355

1.35

1295
1310
1325
1340

1.30
1.35
1.45
1.55

1330
1345
1360
1375

1.35
1.45
1.55
1.65

1365
1380
1395
1410

1.45
1.55
1.65
1.75

1250
1.40
1290
1.45
1325
1.55
1275
1.50
1310
1.60
1345
1.70
1295
1.60
1330
1.70
1365
1.80
1320
1.75
1355
1.85
1385
1.90
5 Ton Standard Efficiency (Horizontal)
External Static (in.w.g.)
0.20
I
0.30
0.40
0.50
RPM
BHP I RPM
BHP
RPM
BHP
RPM
BHP
Low Static - Drive Kit #3
845
0.45
900
0.50
955
0.55
1010
0.65
880
0.50
935
0.60
990
0.65
1040
0.70

1360
1380
1400
1420

1.65
1.80
1.90
2.05

1395
1410
1430
1450

1.75
1.85
2.00
2.10

1425
1.85
1445
1.95
1465
2.10
1480
2.20
THA060S

0.60
RPM
BHP

0.70
RPM
BHP

0.80
RPM
BHP

1060
1090

0.70
0.80

1110
1135

0.80
0.85

1160
1185

0.90
0.95

1215
1240
1260
1285

1.30
1.40
1.50
1.65

1800
1900
2000

865
910
950

0.50
0.60
0.70

920
960
1000

0.60
0.70
0.80

975
1010
1050

0.65
0.75
0.85

1020
1060
1095

0.75
0.85
0.95

1070
1105
1140

0.80
0.90
1.00

1120
1150
1185

0.90
1.00
1.10

1165
1195
1225

0.95
1.05
1.15

1210
1240
1265

1.05
1.15
1.25

2100
2200

995
1040

0.80
0.95

1040
1085

0.90
1.00

1085
1125

0.95
1.10

1130
1170

1.05
1.15

1175
1210

1.15
1.25

1215
1250

1.20
1.35

1260
1290

1.30
1.40

1300
1330

1.40
1.50

2300
2400

1080
1125

1.05
1.20

1125
1165

1.15
1.25

1165
1205

1.20
1.35

1205
1245

1.30
1.45

1245
1285

1.40
1.55

1285
1320

1.45
1.60

1325
1360

1.55
1.70

1360
1.65
1395
1.80
THA060S

1.40
RPM
BHP

1.50
RPM
BHP

1.60
RPM
BHP

0.90 to 1.60 in. w.g.
Air
Volume
0.90
(cfm)
RPM
BHP
Drive Kit
#3
1600
1210
0.95
1700
1230
1.05

5 Ton Standard Efficiency (Horizontal
External Static (in.w.g.)
1.00
I
1.10
1.20
1.30
RPM
BHP I RPM
BHP
RPM
BHP
RPM
BHP
High Static - Drive Kit #7
1255

1.05

1305

1.15

1350

1.30

1395

1.40

1440

1.55

1485

1.65

1530

1.80

1.15
1.25
1.35
1.45
1.55

1320
1340
1365
1390
1415

1.25
1.35
1.45
1.55
1.65

1365
1385
1405
1430
1455

1.35
1.45
1.55
1.65
1.80

1410
1425
1445
1470
1490

1.45
1.55
1.65
1.75
1.90

1455
1470
1485
1505
1530

1.60
1.70
1.75
1.85
2.00

1495
1510
1525
1545

1.70
1.80
1.90
2.00

1540
1550
1565
1585

1.85
1.95
2.00
2.15

1565

2.10

1605

2.25

1800
1900
2000
2100

1255
1280
1310
1340

1.15
1.25
1.35
1.50

1275
1300
1325
1350
1375

2200
2300

1370
1400

1.60
1.75

1405
1435

1.70
1.85

1445
1470

1.80
1.95

1480
1510

1.90
2.05

1515
1545

2.00
2.20

1555
1580

2.15
2.30

1590
1615

2.25
2.40

1625
1650

2.40
2.55

2400

1430

1.90

1465

2.00

1505

2.15

1535

2.20

1570

2.35

1605

2.45

1640

2.60

1675

2.70

Page 20

TABLE 11
BELT DRIVE BLOWER PERFORMANCE
0.10 to 0.80 in. w.g.
Air
Volume
(cfm)

THA072S

6 Ton Standard Efficiency (Down-Flow)
External Static (in.w.g.)

0.10
RPM
Field

BHP

0.20
RPM

0.30

BHP

RPM

0.40

BHP

RPM

0.50

BHP

RPM

0.60

BHP

Furnished

RPM
Low

0.70

BHP
Static

RPM

0.80

BHP

RPM

BHP

- Drive Kit #4

1900

775

0.45

820

0.50

870

0.55

915

0.65

965

0.70

1010

0.75

1060

0.85

1105

0.90

2000

810

0.55

855

0.60

900

0.65

945

0.70

990

0.75

1035

0.85

1080

0.90

1125

1.00

2100

850

0.60

890

0.65

935

0.75

975

0.80

1020

0.85

1060

0.95

1105

1.00

1145

1.10

2200

885

0.70

925

0.75

965

0.80

1005

0.90

1045

0.95

1090

1.05

1130

1.10

1170

1.20

2300

920

0.80

960

0.85

1000

0.90

1035

1.00

1075

1.05

1115

1.15

1155

1.20

1195

1.30

2400

960

0.90

995

0.95

1030

1.05

1070

1.10

1105

1.15

1145

1.25

1180

1.30

1220

1.40

2500

995

1.00

1030

1.10

1065

1.15

1100

1.20

1135

1.30

1175

1.35

1210

1.45

1245

1.50

2600

1035

1.15

1065

1.20

1100

1.25

1135

1.35

1170

1.40

1205

1.50

1240

1.60

1275

1.65

2700

1070

1.30

1100

1.35

1135

1.40

1170

1.50

1200

1.55

1235

1.65

1265

1.70

1300

1.80

2800

1105

1.40

1140

1.50

1170

1.55

1200

1.65

1235

1.70

1265

1.80

1295

1.85

1330

1.95

2900

1145

1.60

1175

1.65

1205

1.70

1235

1.80

1265

1.85

1295

1.95

1330

2.05

1360

2.10

Air
Volume
(cfm)

THA072S

6 Ton Standard Efficiency (Down-Flow)

0.90 to 1.60 in. w.g.

External Static (in.w.g.)
0.90
RPM
Low

BHP
Static

1.00
RPM

BHP

- Kit #4

1.10
RPM

BHP

High Static

1.20
RPM

BHP

1.30

1.40

1.50

1.60

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

- Drive Kit #8

1900

1150

1.00

1190

1.10

1235

1.20

1275

1.25

1315

1.35

1355

1.45

1395

1.55

1435

1.65

2000

1165

1.10

1210

1.15

1250

1.25

1290

1.35

1330

1.45

1370

1.55

1410

1.65

1445

1.75

2100

1190

1.15

1230

1.25

1270

1.35

1310

1.45

1350

1.55

1385

1.65

1425

1.75

1460

1.85

2200

1210

1.25

1250

1.35

1290

1.45

1325

1.55

1365

1.65

1400

1.75

1440

1.85

1475

1.95

2300

1235

1.40

1270

1.45

1310

1.55

1345

1.65

1385

1.75

1420

1.85

1455

1.95

1490

2.05

2400

1255

1.50

1295

1.60

1330

1.65

1365

1.75

1400

1.85

1440

2.00

1475

2.10

1505

2.20

2500

1280

1.60

1315

1.70

1355

1.80

1390

1.90

1425

2.00

1455

2.10

1490

2.20

1525

2.30

2600

1310

1.75

1340

1.85

1375

1.95

1410

2.05

1445

2.15

1480

2.25

1510

2.35

1545

2.45

2700

1335

1.90

1370

2.00

1400

2.10

1435

2.20

1465

2.30

1500

2.40

1530

2.50

1565

2.60

2800

1360

2.05

1395

2.15

1425

2.25

1460

2.35

1490

2.45

1520

2.55

1555

2.65

1585

2.80

2900

1390

2.20

1420

2.30

1450

2.40

1485

2.50

1515

2.60

1545

2.70

1575

2.85

1605

2.95

Page 21

TABLE
BLOWER

BELT DRIVE

6 Ton Standard Efficiency (Horizontal)

0.10 to 0.80 in. w.g.
Air
Volume
(cfm)

0.10
RPM
Field

0.20

BHP

12
PERFORMANCE

RPM

External Static (in.w.g.)
0.40
0.50

0.30

BHP

RPM

Furnished

BHP

Low

Static

RPM

BHP

THA072S
0.60

0.70

0.80

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

- Drive Kit #4

1900

905

0.60

955

0.65

1000

0.70

1045

0.75

1090

0.85

1135

0.90

1175

0.95

1215

1.05

2000

945

0.65

995

0.75

1040

0.80

1085

0.85

1125

0.95

1170

1.00

1210

1.05

1250

1.15

2100

990

0.75

1035

0.85

1080

0.90

1120

0.95

1160

1.05

1205

1.10

1240

1.20

1280

1.25

2200

1030

0.85

1075

0.95

1115

1.00

1160

1.10

1200

1.15

1235

1.25

1275

1.30

1310

1.40

2300

1075

1.00

1115

1.05

1155

1.15

1195

1.20

1235

1.30

1275

1.35

1310

1.45

1345

1.50

2400

1115

1.10

1155

1.20

1195

1.25

1235

1.35

1275

1.45

1310

1.50

1345

1.60

1380

1.70

2500

1160

1.25

1200

1.35

1235

1.40

1275

1.50

1310

1.60

1345

1.65

1380

1.75

1415

1.85

2600

1205

1.40

1240

1.50

1275

1.55

1315

1.65

1350

1.75

1385

1.85

1415

1.90

1450

2.00

2700

1245

1.55

1285

1.65

1320

1.75

1355

1.85

1390

1.95

1420

2.00

1455

2.10

1485

2.20

2800

1290

1.75

1325

1.85

1360

1.95

1395

2.00

1425

2.10

1460

2.20

1490

2.30

1520

2.40

2900

1335

1.95

1365

2.00

1400

2.10

1435

2.20

1465

2.30

1500

2.40

1530

2.50

1560

2.60

0.90 to 1.60 in. w.g.
Air
Volume
0.90
(cfm)
RPM
BHP
High Static

THA0728

6 Ton Standard Efficiency (Horizontal)
External Static (in.w.g.)
1.00

I

1.10

RPM
BHP I RPM
- Drive Kit #8

1.20

1.30

1.40

1.50

1.60

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

1900

1255

1.10

1295

1.15

1335

1.25

1370

1.30

1405

1.40

1440

1.45

1475

1.55

1510

1.65

2000

1285

1.20

1325

1.30

1360

1.35

1395

1.45

1430

1.50

1465

1.60

1500

1.70

1530

1.75

2100

1315

1.35

1355

1.40

1390

1.50

1425

1.55

1460

1.65

1490

1.70

1525

1.80

1555

1.90

2200

1350

1.45

1385

1.55

1420

1.65

1455

1.70

1485

1.80

1520

1.85

1550

1.95

1585

2.05

2300

1380

1.60

1415

1.70

1450

1.75

1480

1.85

1515

1.95

1545

2.00

1580

2.10

1610

2.20

2400

1415

1.75

1450

1.85

1480

1.90

1515

2.00

1545

2.10

1575

2.20

1605

2.25

1635

2.35

2500

1450

1.95

1480

2.00

1515

2.10

1545

2.20

1575

2.25

1605

2.35

1635

2.45

1665

2.55

2600

1480

2.10

1515

2.20

1545

2.25

1575

2.35

1605

2.45

1635

2.55

1665

2.65

1695

2.75

2700

1520

2.30

1550

2.40

1580

2.45

1610

2.55

1640

2.65

1670

2.75

1695

2.85

1725

2.95

2800

1555

2.50

1585

2.60

1615

2.70

1645

2.80

1670

2.85

1700

2.95

1730

3.05

1760

3.20

2900

1590

2.70

1620

2.80

1650

2.90

1675

3.00

1705

3.10

1735

3.20

1760

3.30

1790

3.40

ADDITIONAL
Air Volume
cfm
8OO
1000
1200
1400
1600
1800
2000
2200
2400
2600
2800
3000

TABLE 13
ACCESSORY AIR RESISTANCE
Economizer

Electric Heat

0.04
0.04
0.04
0.04
0.04
0.05
0.05
0.05
0.05
0.06
0.06
0.06

0.01
0.03
0.06
0.09
0.12
0.15
0.18
0.20
0.22
0.24
0.26
0.28

TABLE 14
MINIMUM AIRFLOW
TH (BELT DRIVE) UNITS WITH ELECTRIC HEAT
CFM
Kw

Downflow

Horizontal

30
22,5

2250
1750

2050
1800

15
7,5

1250
1050

1350
1200

Direct drive units with electric heat (7.5-22.5kW)
speed up to 0.6"w.g, maximum static pressure.

Page 22

can operate on low

TABLE 15
DRIVE KIT SPECIFICATIONS
Motor hp
Nominal

Maximum

1.5

1.7

2

2.3

6731010

Drive 2

Drive 3

745-1117

833-1250

RPM Range
Drive 4
Drive 5

968-1340

Drive 6

897-1346

1071-1429

Drive 7

Drive 8

12121548

1193-1591

*Using total air volume and system static pressure requirements determine from blower performance tables rpm and motor hp required. Maximum usable hp of motors
furnished by Lennox are shown. In Canada, nominal motor hp is also maximum usable motor hp. if motors of comparable hp are used, be sure to keep within the service
factor bimitations outlined on the motor nameplate.

B - Three Phase Scroll Compressor
Three
1- Set thermostat

or temperature

control device to

phase

sequentially

scroll

compressors

Voltage Phasing
must

be phased

to ensure correct compressor

and blower

rotation and operation. Compressor and blower are wired

initiate a first-stage heating demand.

in phase at the factory. Power wires are color-coded as
A first-stage

heating

demand

(W1) will energize

compressors

1 and the outdoor fan.

Note - L1 reversing valve is de-energized in the heating
mode.
THA Units With Optional Electric Heat An increased heating demand (W2) will energize
electric heat. Electric heat is also energized during
the defrost cycle (W1) to maintain discharge air
temperature.

follows: line 1-red, line 2-yellow, line 3-blue.
1-

Observe suction and discharge
blower rotation on unit start-up.

pressures

and

2-

Suction pressure must drop, discharge pressure
must rise, and blower rotation must match rotation
marking.

If pressure differential is not observed or blower rotation is
not correct:
3-

Disconnect all remote electrical power supplies.

4-

Reverse any two field-installed wires connected to
the line side d K1 contactor. Do not reverse wires at
blower contactor.

Make sure the connections are tight.

,&,IMPORTANT

Discharge and suction pressures should operate at their
normal start-up ranges.
C - Refrigerant Charge and Check
WARNING-Do

not exceed nameplate

charge under any condition.

This unit is factory charged and should require no further
A - Start-Up
1- Set thermostat or temperature control device fan
switch to AUTO or ON. Set thermostat
or
temperature control device to initiate a first-stage
cooling demand.
A first-stage Y1 cooling demand will energize
reversing valve solenoid and compressor 1,

L1

Units With Optional Economizer The optional economizer will start on a first stage (Y1)
cooling demand when outdoor air enthalpy is
suitable, An increased cooling demand (Y2) will
energize compressor 1,
2- Refrigerant
circuits are factory charged with
HCFC-22 refrigerant. See unit rating plate for correct
amount of charge.

adjustment. If the system requires charge, reclaim the
charge, evacuate the system,
and add required
nameplate charge.
NOTE - System charging is not recommended below
60'_F (15_C). In temperatures below 60'_F (15_C) , the
charge must be weighed into the system.
If weighing facilities are not available, or to check the
charge, use the following procedure:
1- Attach gauge manifolds and operate unit in cooling
mode until system stabilizes (approximately five
minutes).
2- Check each
operating.

system

separately

with all stages

3- Use a thermometer to accurately
outdoor ambient temperature.

measure

the

4- Apply the outdoor temperature to tables 18 through
24 to determine normal operating pressures.

Page 23

5- Comparethe normaloperatingpressuresto the
pressures obtained from the gauges, Minor
variationsinthesepressures
maybeexpected
dueto
differencesin installations.Significantdifferences
couldmeanthatthesystemis notproperlycharged
or thata problemexistswithsomecomponent
inthe
system,Correct any system problems before
proceeding.
TABLE 16
TH 024S NORMAL OPERATING PRESSURES
Outdoor Coil
Entering Air
Temp
65°F

Dis. +10 psig

Suct. +5 psig

141

82

163

84

85 oF

189

85

95°F

219

86

105°F

252

87

115°F

289

89

75 oF

TABLE 17
TH 030S NORMAL
OPERATING
Outdoor Coil
Entering Air
Temp
65°F

TABLE 20
TH 048B NORMAL OPERATING PRESSURES
Outdoor Coil
Entering Air
Temp
65 ° F

Dis. + 10 psig

Suct. +5 psig

185

76

75 ° F

212

78

85 ° F

242

80

95 o F

276

81

105 o F

312

82

115 ° F

351

84

TH 048S NORMAL
Outdoor Coil
Entering Air
Temp
65 ° F

TABLE 21
OPERATING

PRESSURES

Dis. + 10 psig

Suct. +5 psig

171

86

75 ° F
85 ° F
95 ° F

197
227
259

86
88
89

105 ° F

295

90

115 ° F

335

91

PRESSURES
TABLE 22
TH 060B NORMAL OPERATING
Outdoor Coil
Entering Air
Dis. + 10 psig
Temp

PRESSURES

Dis. +10 psig

Suct. +5 psig

146

81

75 oF

167

82

65 o F

174

68

85 oF

194

84

75 o F

201

71

95°F

227

85

85 o F

232

73

105°F

261

87

95 ° F

267

77

115°F

298

89

105 o F

305

80

115 o F

346

84

TABLE 18
TH 036B NORMAL
OPERATING
Outdoor Coil
Entering Air
Temp
65°F

PRESSURES

Dis. +10 psig

Suct. +5 psig

169

81

75 oF

196

82

85°F

226

84

95°F

259

85

105°F

296

86

115°F

336

87

TABLE 19
TH 036S NORMAL
OPERATING

TABLE 23
TH 060S NORMAL
OPERATING
Outdoor Coil
Entering Air
Dis. + 10 psig
Temp
65 ° F
163
75 ° F
189

PRESSURES
Suct. +5 psig
81
82

85 ° F
95 ° F

217
259

84
85

105 ° F

285

86

115 ° F

323

88

TABLE 24
TH 072S NORMAL OPERATING
Outdoor Coil
Entering Air
Dis. + 10 psig
Temp

PRESSURES

Suct. +5 psig

PRESSURES

Outdoor Coil
Entering Air
Temp

Dis. +10 psig

Suct. +5 psig

65 o F

154

83

65 ° F

173

70

75 o F

178

83

75 ° F

203

76

85 ° F

2O5

84

85 ° F

234

81

Suct. +5 psig

95 ° F

236

86

95 ° F

267

84

105 o F

269

88

105 ° F

304

86

115 ° F

306

89

115 ° F

343

87

Page 24

6- If discharge pressure is high, remove refrigerant from
the system, If discharge pressure is low, add
refrigerant to the system.
• Add or remove charge in increments.
• Allow the system to stabilize each
refrigerant is added or removed.

E - Compressor Controls
See unit wiring diagram to determine which controls are
used in each unit, Optional controls are identified on
wiring diagrams by arrows at junction points.

time
-

7- Use the following approach method along with the
normal operating pressures to confirm readings.
D - Charge Verification - Approach Method
8-Using
the same thermometer,
compare
temperature to outdoor ambient temperature,
Approach Temperature
ambient temperature,

= Liquid temperature

freeze-up,
Switch
resets
when
temperature reaches 58 _F (15<_C).

liquid
minus

.

9- Approach temperature should match values in table
25. An approach temperature greater than value
shown indicates an undercharge. An approach
temperature less than value shown indicates an
overcharge,
10- Do not use the approach method if system pressures
do not match pressures in tables 18 through 24, The
approach method is not valid for grossly over or
undercharged systems.
TABLE 25
APPROACH TEMPERATURE
Unit

Liquid Temp. Minus Ambient
Temp.

024S

7°F + 1 (3.9°C + 0.5)

030S

8°F + 1 (4.4°C + 0.5)

036B

8°F + 1 (4.4°C + 0.5)

036S

7°F + 1 (3.9°C + 0.5)

048B

16°F+ 1 (8.9°C + 0.5)

048S

10°F+ 1 (5.6°C + 0.5)

060B

12°F+ 1 (6.7°C + 0.5)

060S

6°F + 1 (3.3°C + 0.5)

072S

11°F+ 1 (6.1°C +0.5)

Freezestat (S49)
Switch de-energizes compressor when indoor coil
temperature falls below 29_F (-2<_C)to prevent coil
indoor

coil

Defrost Switch ($6)
Defrost switch closes to initiate defrost when liquid
line temperature falls to 42°F (5.6°C), Defrost switch
opens when liquid line temperature reaches 70°F
(21°C) to terminate defrost. If the liquid line
temperature does not rise above 70°F (21°C), the
CMC1 will terminate defrost after 14 minutes. The
defrost switch is located on the liquid line between the
outdoor expansion valve and the distributor

_

Defrost Control (CMC1)
Defrost is liquid line temperature initiated and
operates for 14 minutes unless terminated by liquid
line temperature.
When the liquid line temperature drops below 42°F
(5.6°C), the defrost switch closes and signals the
defrost control that a defrost cycle is needed, If the
defrost switch is still closed after 60 minutes (default),
a defrost cycle begins and operates for 14 minutes.
The defrost switch can terminate the defrost cycle
before the 14 minutes elapses
temperature reaches 70°F (21°C)

if

liquid

line

Electric heat is energized during defrost to maintain
discharge air temperature.

Page 25

The defrostthermostatand the defrostcontrolwork
togethertoensurethattheheatpumpoutdoorcoildoes
noticeexcessively
duringtheheatingmode.
Compressor Accumulated

Run-Time Interval

The defrost control will not energize a defrost cycle unless
the unit has been operating in heating mode for an
accumulated 60 minutes (default). The run time interval
can be changed by moving the jumper on the CMC board
timing pins. See figure 18.
DEFROST CONTROLBOARD

P}

TIMING
JUMPER

©"

I_s/

\/'

Anti-short cycle
lockout

REtAY

DIAGNOSTIC

LEDS

___

0

Ds2

TEST
P5

/

J

K2 RELAY

_i-[I

Alternating Slow FLASH

Low pressure switch, OFF
freezestat fault

Slow FLASH

Low pressure switch, OFF
freezestat lockout

ON

High pressure switch Slow FLASH
fault

OFF

High pressure switch ON
lockout

P2

REMOVEFOR
COMPRESSOR
DELAY
PS

The

OFF
OFF
Simultaneous Slow FLASH

.................................................

0 OUT

I0

The defrost board uses two LEDs for diagnostics.
LEDs flash a sequence according to the condition.
TABLE 26

No power to control
Normal operation /
power to control

FA

KI

Diagnostic LEDs

Defrost Control Board Diagnostic LED
Green LED
Mode
(DS2)
Red LED (DS1)

CMC1

@

removed before an additional 5-second period has
elapsed (7 seconds total), the unit will remain in defrost
mode until the defrost pressure switch opens or 14
minutes have passed. If the jumper is not removed until
after the additional 5-second period has elapsed, the
defrost will terminate and the test option will not function
again until the jumper is removed and re-applied.

OFF

C

The unit should be inspected once a year by a qualified
service technician.

24V

..........

,WARNING

FIGURE 18
The defrost interval can be adjusted to 30, 60, or 90
minutes. The defrost timing jumper is factory-installed to
provide a 60-minute defrost interval. If the timing selector
jumper is not in place, the control defaults to a 90-minute
defrost interval.

,CAUTION

Defrost Test Option
A TEST option is provided for troubleshooting. The TEST
mode may be started any time the unit is in the heating
mode and the defrost thermostat is closed or jumpered. If
the timing jumper is in the TEST position at power-up, the
defrost control will ignore the test pins. When the jumper
is placed across the TEST pins for two seconds, the
control will enter the defrost mode. If the jumper is

A - Lubrication
All motors

are lubricated

lubrication is required,

Page 26

at the factory.

No further

B - Filters

E - Outdoor Coil

Units are equipped with temporary flters which need to be
replaced before the building is occupied. See table 27 for
correct filter size. Refer to local codes or appropriate
jurisdiction for approved filters.

Clean outdoor coil annually with detergent or commercial
coil cleaner and inspect monthly during the cooling
season.

Approved filters should be checked monthly and replaced
when necessary. Take note of air flow direction marking
on filter frame when reinstalling filters. See figure 19.

&WARNING

Outdoor coils are made of single and two formed slabs.
On units with two slabs, dirt and debris may become
trapped between the slabs. To clean between slabs,
carefully separate coil slabs and wash them thoroughly.
See figure 20. Flush coils with water following cleaning.
Note - Remove all screws and gaskets prior to cleaning
procedure and replace upon completion.
F - Filter Drier
The unit is equipped with a biflow filter drier, if
replacement is necessary, order another of like design.

TABLE 27
UNIT FILTERS
Qt

Unit

Y

Filter

Size - inches

REMOVE FILTERS
(mm)

024, 030,
036, 048,060B

4

16 X 20 X 2 (406 X 508 X
51)

060S, 072

4

20 X 20 X 2(508 X 508 X
51)

NOTE-Filtersmust
usein Canada.

be U.L.C. certified or equivalent _r
PULL TO
REMOVE
FILTERS

C - Supply Air Blower Wheel
Annually inspect supply air blower wheel for accumulated
dirt or dust. Turn off power before attempting to remove
access panel or to clean blower wheel.
D - Indoor Coil
Inspect and clean coil at beginning of each cooling and
heating season. Clean using mild detergent
or
commercial coil cleanser. Flush coil and condensate

FIGURE 19

drain with water taking care not to get insulation, filters
and return air ducts wet.
CLEAN OUTDOOR COIL

TOP VIEW

ENDPLATE IS SECURED
TO MULLION
12-

Remove screws securing coil end plate to mullion.
Remove clips connecting

coils slabs and separate

slabs 3-4" (76-102mm).

0_

3-

Clean coils with detergent or commercial coil cleaner.

4-

Rinse thoroughly with water and reassemble.

OUTDOOR
COILS

FIGURE 20
Page 27



Source Exif Data:
File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.2
Linearized                      : No
Page Count                      : 28
Page Layout                     : SinglePage
Page Mode                       : UseNone
Producer                        : Goby Monitor Application version 4, 0, 0, 13
Create Date                     : Wed Jul 02 04:13:44 2008
Author                          : 
Title                           : 
Subject                         : 
EXIF Metadata provided by EXIF.tools

Navigation menu