Lennox ZHA036 User manual

2015
Litho U.S.A.
WARNING
Improper installation, adjustment, alteration, ser
vice or maintenance can cause property damage,
personal injury or loss of life. Installation and ser
vice must be performed by a licensed professional
HVAC installer or equivalent or service agency.
CAUTION
Danger of sharp metallic edges. Can cause injury.
Take care and wear protective clothing when
servicing unit to avoid accidental contact with
sharp edges.
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
Table Of Contents
Dimensions Page 2.................................
Shipping and Packing List Page 3....................
General Page 3....................................
Requirements Page 3...............................
Unit Support Page 4................................
Duct Connection Page 4............................
INSTALLATION
INSTRUCTIONS
ZHA036 (3 TON)
ZHB036 (3 TON)
ZHA048 (4 TON)
ZHB048 (4 TON)
ZHA060 (5 TON)
ZHB060 (5 TON)
HEAT PUMP PACKAGED UNITS
507111-02
2/2015
Supersedes 507111-01
Rigging Unit For Lifting Page 4.......................
Horizontal Air Discharge Page 5......................
Condensate Drains Page 5..........................
Electrical Connections Page 6.......................
Blower Operation and Adjustments Page 7............
Start-Up Page 16....................................
Defrost Control Board Page 22........................
Service Page 23....................................
ZH 036, 048, 060 PARTS ARRANGEMENT
EVAPORATOR
COIL
OUTDOOR
COIL FAN
OUTDOOR
COIL
COMPRESSOR
BLOWER
MOTOR
BLOWER
HOUSING
ELECTRIC HEAT
(OPTIONAL)
BOTTOM POWER
ENTRY
SIDE POWER
ENTRY
CONTROL
PANEL
UNIT FUSE
TB2 UNIT
TERMINAL
STRIP

Page 2
ZH 036, 048, 060
ZH 036, 048, 060, DIMENSIONS in (mm)
1
(25)
5-3/4
(146)
(1149)
FRONT VIEW
3-1/2 (89)
TYP.
END VIEW
1
(25)
Either
side
73-3/4
(1873)
END VIEW
1
(25)
LIFTING HOLES
(For rigging)
45-1/4
47-1/4
(1200)
BASE
POWER
ENTRY
3-1/2
(89)
11-7/8
(302)
5-3/4
(146)
17-3/8
(441)
6-1/2
(165) 27
(686) 31
(787)
CONDENSATE
OUTLET
6-1/4
(159)
25-3/4
(654)
8-3/8
(213)
10-7/8
(276)
5-9/16
(141)
36-7/8 (937) ZHA036, 046
44-7/8 (1140) ZH 060 ZHB036, 048
10-7/8
(276)
25-5/8
(651)
5-1/8
(130)
75-7/8
(1927)
TOP VIEW (Base)
24-9/16
(624)
12-1/8
(308) 5-1/8
(130)
BOTTOM
SUPPLY
AIR
OPENING
BOTTOM
RETURN
AIR OPENING
17-3/4
(451)
29
(737)
5-3/4
(146)
B
A
C
BOTTOM
POWER
ENTRY
(See Table)
16-1/8
(410)
47-1/4
(1200)
BASE
13-5/8
(346)
11-1/8
(283)
HORIZONTAL
SUPPLY
HORIZONTAL
RETURN
1-1/8 (29)
7/8 (23)
7/8 (23)
POWER
24V
ACC.
3/4
1/2
Hole Diameter
Required in
Unit Base (Max.)
Wire
Use
BOTTOM POWER ENTRY
Holes required for Optional Bottom Power Entry Kit
Threaded
Conduit Fittings
(Provided in Kit)
A
B
C
1/2

Page 3
507111-02 2/2015
Shipping and Packing List
Package 1 of 1 contains:
1 - Assembled unit
Check unit for shipping damage. Receiving party should
contact last carrier immediately if shipping damage is
found.
General
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.
Requirements
The ZH unit is 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.
Installation of ZH 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.
UNIT CLEARANCES
FIGURE 1
C
DB
A
HORIZONTAL
OUTDOOR
AIR HOOD
OUTDOOR
AIR HOOD
1Unit
Clearance
A
in.(mm)
B
in.(mm)
C
in.(mm)
D
in.(mm)
Top
Clearance
Service
Clearance
36
(914)
36
(914)
36*
(914)
36
(914)
Unob
structed
Minimum Opera
tion Clearance
36
(914)
36
(914)
36*
(914)
36
(914)
Unob
structed
*Clearance is 60 in. (1524mm) in horizontal air flow applications.
Note - Entire perimeter of unit base requires support when elevated above
mounting surface.
1Service Clearance - Required for removal of serviceable parts.
Minimum Operation Clearance - Required clearance for proper unit operation.
NOTICE
Roof Damage!
This system contains both refrigerant and oil.
Some rubber roofing material may absorb oil,
causing the rubber to swell. Bubbles in the rubber
roofing material can cause leaks. Protect the roof
surface to avoid exposure to refrigerant and oil
during service and installation. Failure to follow
this notice could result in damage to roof surface.
The National Electric Code (ANSI/NFPA No. 70-1984) is
available from:
National Fire Protection Association
1 Batterymarch Park
PO Box 9101
Quincy, MA 02269-9101
Installation of 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:
 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.
 Air filters must be replaced and pre-filter must be
removed upon construction completion.
 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.

Page 4
ZH 036, 048, 060
WARNING
Electric shock hazard and danger of
explosion. Can cause injury, death or
product or property damage. Turn off
electrical power to unit before
performing any maintenance or
servicing operations on the unit.
IMPORTANT
The Clean Air Act of 1990 bans the intentional vent
ing of refrigerant (CFC's and HCFC's) as of July 1,
1992. Approved methods of recovery, recycling or
reclaiming must be followed. Fines and/or incar
ceration may be levied for non-compliance.
Unit Support
NOTE - Securely fasten roof frame to roof per local codes.
ZH 036, 048, 060 units are installed on Z1CURB frames.
A - Downflow Discharge Application
Roof Mounting with Z1CURB
1- The Z1CURB roof mounting frame must be installed,
flashed and sealed in accordance with the
instructions provided with the frame.
2- The Z1CURB 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 not insulated, so
an enclosed, insulated frame is 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 of unit base.
Supports must be constructed of steel or suitably
treated wood materials.
NOTE-When installing unit on a combustible surface for
downflow discharge applications, the Z1CURB roof
mounting frame is required.
B - Horizontal Discharge Applications
1- Specified installation clearances must be maintained
when installing units. Refer to figure 1.
2- 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.
3- Units require support along all four sides of unit base.
Supports must be constructed of steel or suitably
treated wood materials.
Duct Connection
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.
In downflow applications, do not drill or punch
holes in base of unit. Leaking in roof may occur if
unit base is punctured.
CAUTION
!
Rigging Unit For Lifting
1- Connect rigging to the unit base using both holes in
each corner. See figure 2.
2- All panels must be in place for rigging.
3- Place field‐provided H‐style pick in place just above
top edge of unit. Frame must be of adequate
strength and length. (H-style pick prevents damage
to unit.)
ZH Lifting Point Should
Be Directly Above
Center Of Gravity.
CAUTION: DO NOT
WALK ON UNIT.
UNIT WEIGHT*
LBS. KG.
*Maximum weight with all available
installed accessories.
664 301
FIGURE 2

Page 5
507111-02 2/2015
Horizontal Air Discharge
Unit is shipped with panels covering the horizontal supply
and return air openings. See figure 3.
FIGURE 3
DOWNFLOW
RETURN AIR
OPENING
UNIT SUPPLY AND RETURN AIR OPENINGS
DOWNFLOW
SUPPLY AIR
OPENING
HORIZONTAL
RETURN AIR
OPENING
HORIZONTAL
SUPPLY AIR
OPENING
1- Remove horizontal covers and place a bead of silicone
sealant on the underside of the duct cover flanges. See
figure 4.
2- Position covers over downflow openings. Secure
covers with self-drilling screws in at least two places on
each cover. Drill through duct cover side into flange of
base pan.
3- Place a bead of silicone between insulation and duct
cover to seal in insulation edges. Let silicone dry before
running gas or electric heat.
Units Equipped With An Optional Horizontal Economizer
1- Install the horizontal supply air cover over the down
flow supply air opening as described above.
2- Leave the horizontal return air cover in place.
3- Locate the extra horizontal return cover that is
included with the horizontal economizer kit. Install as
described in previous section.
FIGURE 4
INSTALL DUCT COVERS - SIDE VIEW
ÉÉÉÉÉÉ
ÉÉÉÉÉÉ
ÉÉÉÉÉ
INSULATION
UNIT BASE
FLANGES
DUCT COVER
FLANGES
APPLY SILICONE
SEALANT TO
FLANGES
ÉÉÉÉÉÉ
ÉÉÉÉÉÉ
ÉÉÉÉÉ
APPLY SILICONE SEALANT
BETWEEN DUCT COVER
FLANGE AND UNIT INSULATION
NOT TO
SCALE
4- Install return air duct on the intake air side of the
horizontal economizer. See figure 5.
5- Horizontal economizer and return air duct must be
field-supported.
This opening not used
in horizontal applica
tions with economizer
HORIZONTAL
RETURN AIR DUCT
(FIELD-PROVIDED)
UNIT
HORIZONTAL
SUPPLY AIR DUCT
(FIELD-PROVIDED)
OPTIONAL
HORIZONTAL
ECONOMIZER
HOOD
PROVIDED
WITH
ECONOMIZER
FIGURE 5
HORIZONTAL RETURN AIR DUCTWORK
WITH ECONOMIZER
Condensate Drains
Make drain connection to the drain coupling provided
on unit.
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 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.
FIGURE 6
Á
Á
Á
Á
Á
Á
Á
Á
Á
Á
Á
Á
Á
Á
Á
UNIT
Minimum Pitch
1” (25 mm) per
10' (3 m) of line
MOUNTING
FRAME
OPEN VENT
CONDENSATE SIDE DRAIN CONNECTION
NOTE - Allow clearance to
open doors when installing
condensate piping.
CAULK AROUND CONDENSATE COUPLING

Page 6
ZH 036, 048, 060
Electrical Connections
POWER SUPPLY
Do not apply power or close disconnect switch until
installation is complete. Refer to start-up directions. Refer
closely to unit wiring diagram.
Refer to unit nameplate for minimum circuit ampacity
and maximum fuse size.
1- Units are factory-wired for 240, 460, or 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.
2- Route power through the side or bottom power
entry area. For bottom power entry, a bottom
power entry kit must be used. Connect power
wiring to K1/K3 contactors in control box. See
figure7. On units equipped with electric heat, route
power wiring to TB2; see parts arrangement for
location. See unit wiring diagram.
K1
FIGURE 7
POWER WIRING
CONNECT FIELD-
SUPPLIED WIRING
TO K1/K3
K3
Y, G, J, M
VOLT ONLY
CONTROL WIRING
A - Thermostat Location
Room thermostat mounts vertically on a standard 2” X 4”
handy box or on any non-conductive flat surface.
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:
-drafts or dead spots behind doors and in corners
-hot or cold air from ducts
-radiant heat from sun or appliances
-concealed pipes and chimneys
IMPORTANT - Unless field thermostat wires are rated
for maximum unit voltage, they must be routed away
from line voltage wiring.
B - Control Wiring
1- Route thermostat cable or wires from subbase to
control panel (refer to unit dimensions to locate
bottom and side power entry).
Use18 AWG wire for all applications using remotely
installed electro-mechanical and electronic
thermostats.
2- Install thermostat assembly in accordance with
instructions provided with thermostat.
3- Connect thermostat wiring to low voltage leads in
control box. Wire as shown in figure 8 for
electro-mechanical and electronic thermostats. If
using other temperature control devices or energy
management systems see instructions and wiring
diagram provided by manufacturer.
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.
FIGURE 8
24 VOLT FIELD WIRING WITH ELECTRONIC AND
ELECTRO-MECHANICAL THERMOSTATS
TO CMC1; DO NOT
REMOVE FACTORY
INSTALLED WIRES
NOT ALL TERMINALS
ARE FOUND ON ALL
THERMOSTATS
Note - On electro-mechanical thermo
stats set anticipator at 0.1 amps.
Jumper terminals R and
OC when thermostat has
no night setback terminals.
A2 THERMOSTAT
UNIT CONTROL AREA

Page 7
507111-02 2/2015
Blower Operation and Adjustments
Units are equipped with belt drive blowers; available
drive varies by model.
IMPORTANT
Three phase scroll compressors must be phased
sequentially for correct compressor and blower
rotation. Follow “COOLING START-UP” section of
installation instructions to ensure proper compres
sor and blower operation.
A - Blower Operation
Initiate blower demand at thermostat according to
instructions provided with thermostat. Unit will cycle on
thermostat demand. The following steps apply to
applications using a typical electro-mechanical
thermostat.
1- Set thermostat or temperature control device fan
switch to AUTO or ON. 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
position.
B - Determining Unit CFM
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).
Blower performance data is based on static pressure
readings taken in locations shown in figure 9.
Note - Static pressure readings can vary if not taken
where shown.
3- Measure the indoor blower wheel RPM.
4- Referring to pages 9-14, use static pressure and
RPM readings to determine unit CFM. Use
option/accessory air resistance table on page 15
when installing units with any of the options or
accessories listed. Refer to table 3 for minimum
airflow when electric heat is installed.
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 10. Do not exceed
minimum and maximum number of pulley turns as
shown in table 1.
TABLE 1
MINIMUM AND MAXIMUM PULLEY ADJUSTMENT
Belt Min. Turns Open Maxi. Turns Open
A Section No minimum 5
C - Blower Belt Adjustment
Maximum life and wear can be obtained from belts only if
proper pulley alignment and belt tension are maintained.
Tension new belts after a 24-48 hour period of operation.
This will allow belt to stretch and seat grooves. Make sure
blower and motor pulley are aligned as shown in figure 11.
FIGURE 9
LOCATION OF STATIC PRESSURE READINGS
SUPPLY AIR
READING
LOCATION
SUPPLY RE
TURN
INSTALLATIONS WITH DUCTWORK
SUPPLY RE
TURN
INSTALLATIONS WITH CEILING DIFFUSERS
MAIN
DUCT RUN
FIRST BRANCH
OFF OF MAIN RUN
DIFFUSER
ROOFTOP UNIT ROOFTOP UNIT
SUPPLY AIR
READING
LOCATION
RETURN AIR
READING LOCATION
RETURN AIR
READING
LOCATION

Page 8
ZH 036, 048, 060
BLOWER ASSEMBLY
TO INCREASE BELT TENSION
1-Loosen four bolts securing motor base to mounting frame.
2-Slide the motor downward to tighten the belt.
3-Tighten four bolts on motor base.
TO INCREASE CFM
LOOSEN ALLEN SCREW &
TURN PULLEY CLOCKWISE
TO DECREASE CFM
TURN PULLEY
COUNTERCLOCKWISE
FIGURE 10
PULLEY
MOTOR
SIDE VIEW
ALLEN
SCREW
LOOSEN FOUR BOLTS
AND SLIDE BLOWER
MOTOR DOWNWARD
TO TIGHTEN BELT
FIGURE 11
PULLEY ALIGNMENT
BELT
MOTOR
PULLEY
BLOWER
PULLEY
NOT ALIGNED
ALIGNED
1- Loosen four bolts securing motor base to mounting
frame. See figure 10.
2- To increase belt tension -
Slide blower motor downward to tighten the belt. This
increases the distance between the blower motor and
the blower housing.
To loosen belt tension -
Slide blower motor upward to loosen the belt. This
decreases the distance between the blower motor
and the blower housing.
3- Tighten four bolts securing motor base to the
mounting frame.
D - Check Belt Tension
Overtensioning belts shortens belt and bearing life.
Check belt tension as follows:
1- Measure span length X. See figure 12.
2- Apply perpendicular force to center of span (X) with
enough pressure to deflect belt 1/64” for every inch
of 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 distance of a 400mm span
would be 6mm.
3- Measure belt deflection force. For a used belt, the
deflection force should be 5 lbs. (35kPa). A new belt
deflection force should be 7 lbs. (48kPa).
A force below these values indicates an
undertensioned belt. A force above these values
indicates an overtensioned belt.
MEASURE BELT TENSION
FIGURE 12
DEFLECTION 1/64” PER INCH OF SPAN
OR 1.5mm PER 100mm OF SPAN
FORCE
E-Field-Furnished Blower Drives
For field-furnished blower drives, use pages 9-14 to
determine BHP and RPM required. Reference page 15
for additional air resistance and drive kit numbers. See
table 2 for drive component manufacturer's numbers.

Page 9
BLOWER DATA - BELT DRIVE - ZHA036
BLOWER TABLE INCLUDES RESISTANCE FOR BASE UNIT ONLY WITH DRY INDOOR COIL AND AIR FILTERS IN PLACE.
FOR ALL UNITS ADD:
1 - Any factory installed options air resistance (heat section, economizer, wet coil, etc.).
2 - Any eld installed accessories air resistance (duct resistance, diffuser, etc.).
See page 15 for blower motors and drives and wet coil and options/accessory air resistance data.
DOWNFLOW
Air
Volume
cfm
External Static - in. w.g.
0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
Field Furnished Kit ZA01
900 562 0.16 629 0.18 699 0.19 771 0.2 840 0.22 904 0.24 962 0.26 1015 0.29
1000 586 0.18 654 0.2 725 0.21 796 0.23 864 0.25 927 0.27 983 0.3 1034 0.33
1100 612 0.2 681 0.22 752 0.24 823 0.26 890 0.28 950 0.31 1004 0.34 1054 0.37
1200 641 0.23 711 0.25 783 0.27 852 0.29 917 0.32 975 0.35 1027 0.39 1074 0.42
1300 673 0.25 744 0.28 815 0.3 882 0.33 944 0.36 1000 0.4 1050 0.44 1096 0.48
1400 709 0.29 779 0.32 849 0.34 914 0.37 973 0.41 1026 0.45 1074 0.49 1118 0.53
1500 747 0.33 816 0.36 883 0.39 945 0.42 1001 0.46 1052 0.51 1098 0.55 1141 0.59
Air
Volume
cfm
External Static - in. w.g.
0.90 1.00 1.10 1.20 1.30 1.40 1.50 1.60
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
Kit ZA04
900 1065 0.32 1112 0.35 1158 0.38 1202 0.41 1243 0.44 1284 0.48 1323 0.52 1364 0.55
1000 1082 0.36 1128 0.39 1173 0.42 1216 0.45 1257 0.49 1297 0.53 1336 0.57 1375 0.6
1100 1100 0.4 1145 0.44 1189 0.47 1231 0.51 1272 0.54 1311 0.58 1349 0.62 1388 0.66
1200 1119 0.45 1163 0.49 1206 0.52 1247 0.56 1287 0.6 1326 0.64 1364 0.68 1402 0.72
1300 1139 0.51 1182 0.55 1224 0.58 1265 0.62 1304 0.66 1342 0.71 1379 0.75 1416 0.79
1400 1160 0.57 1202 0.61 1243 0.65 1283 0.69 1322 0.73 1359 0.78 1396 0.82 1432 0.87
1500 1182 0.64 1223 0.68 1263 0.72 1303 0.76 1341 0.81 1378 0.85 1414 0.9 1449 0.94
HORIZONTAL
Air
Volume
cfm
External Static - in. w.g.
0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
Field Furnished Kit ZA01 Kit ZA04
900 580 0.14 649 0.17 721 0.19 794 0.22 868 0.24 938 0.27 998 0.3 1045 0.33
1000 612 0.17 681 0.19 752 0.22 825 0.25 897 0.27 963 0.3 1017 0.33 1061 0.37
1100 647 0.2 717 0.23 788 0.26 858 0.28 926 0.31 986 0.34 1036 0.38 1077 0.41
1200 687 0.23 757 0.26 826 0.29 893 0.32 955 0.35 1008 0.39 1054 0.42 1095 0.46
1300 730 0.27 798 0.3 864 0.33 926 0.37 982 0.4 1030 0.44 1073 0.47 1116 0.51
1400 775 0.31 840 0.34 902 0.38 959 0.42 1009 0.46 1054 0.5 1096 0.53 1140 0.56
1500 820 0.36 881 0.4 939 0.44 993 0.49 1039 0.53 1082 0.56 1124 0.59 1168 0.62
Air
Volume
cfm
External Static - in. w.g.
0.90 1.00 1.10 1.20 1.30 1.40 1.50 1.60
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
Kit ZA04
900 1091 0.36 1140 0.38 1188 0.4 1232 0.43 1272 0.46 1309 0.49 1346 0.53 1383 0.57
1000 1105 0.4 1154 0.42 1201 0.45 1245 0.47 1284 0.5 1321 0.54 1357 0.58 1394 0.62
1100 1121 0.44 1169 0.47 1216 0.49 1259 0.52 1298 0.56 1335 0.6 1370 0.64 1406 0.69
1200 1139 0.49 1187 0.52 1234 0.54 1276 0.58 1314 0.62 1350 0.66 1385 0.71 1421 0.75
1300 1161 0.54 1208 0.57 1254 0.6 1295 0.64 1332 0.69 1366 0.73 1401 0.78 1436 0.83
1400 1185 0.59 1232 0.63 1276 0.67 1315 0.71 1351 0.76 1384 0.81 1419 0.86 1454 0.9
1500 1212 0.66 1257 0.7 1299 0.74 1337 0.79 1371 0.84 1404 0.89 1438 0.94 1473 0.99

Page 10
BLOWER DATA - BELT DRIVE - ZHA048
BLOWER TABLE INCLUDES RESISTANCE FOR BASE UNIT ONLY WITH DRY INDOOR COIL AND AIR FILTERS IN PLACE.
FOR ALL UNITS ADD:
1 - Any factory installed options air resistance (heat section, economizer, wet coil, etc.).
2 - Any eld installed accessories air resistance (duct resistance, diffuser, etc.).
See page 15 for blower motors and drives and wet coil and options/accessory air resistance data.
DOWNFLOW
Air
Volume
cfm
External Static - in. w.g.
0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
Field Furnished Kit ZA02
1200 641 0.23 711 0.25 783 0.27 852 0.29 917 0.32 975 0.35 1027 0.39 1074 0.42
1300 673 0.25 744 0.28 815 0.30 882 0.33 944 0.36 1000 0.40 1050 0.44 1096 0.48
1400 709 0.29 779 0.32 849 0.34 914 0.37 973 0.41 1026 0.45 1074 0.49 1118 0.53
1500 747 0.33 816 0.36 883 0.39 945 0.42 1001 0.46 1052 0.51 1098 0.55 1141 0.59
1600 787 0.38 854 0.41 918 0.44 976 0.48 1030 0.52 1078 0.56 1123 0.61 1164 0.66
1700 827 0.43 892 0.46 952 0.49 1007 0.53 1058 0.58 1105 0.63 1148 0.68 1189 0.73
1800 868 0.48 929 0.52 986 0.55 1038 0.59 1087 0.64 1132 0.69 1174 0.75 1214 0.80
1900 907 0.54 966 0.58 1019 0.62 1069 0.66 1116 0.71 1160 0.77 1200 0.82 1240 0.88
2000 946 0.60 1001 0.65 1053 0.69 1101 0.74 1146 0.79 1188 0.85 1228 0.91 1267 0.98
Air
Volume
cfm
External Static - in. w.g.
0.90 1.00 1.10 1.20 1.30 1.40 1.50 1.60
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
Kit ZA02 Kit ZA05
1200 1119 0.45 1163 0.49 1206 0.52 1247 0.56 1287 0.60 1326 0.64 1364 0.68 1402 0.72
1300 1139 0.51 1182 0.55 1224 0.58 1265 0.62 1304 0.66 1342 0.71 1379 0.75 1416 0.79
1400 1160 0.57 1202 0.61 1243 0.65 1283 0.69 1322 0.73 1359 0.78 1396 0.82 1432 0.87
1500 1182 0.64 1223 0.68 1263 0.72 1303 0.76 1341 0.81 1378 0.85 1414 0.90 1449 0.94
1600 1205 0.70 1245 0.75 1284 0.79 1323 0.84 1361 0.88 1397 0.93 1432 0.98 1467 1.03
1700 1228 0.78 1268 0.82 1307 0.87 1345 0.92 1382 0.97 1417 1.02 1452 1.07 1486 1.11
1800 1253 0.85 1292 0.91 1331 0.96 1368 1.01 1404 1.06 1439 1.11 1473 1.16 1506 1.21
1900 1279 0.94 1317 1.00 1355 1.05 1392 1.10 1427 1.16 1461 1.21 1494 1.26 1527 1.31
2000 1305 1.04 1343 1.10 1380 1.15 1416 1.21 1450 1.26 1484 1.32 1516 1.37 1549 1.42
HORIZONTAL
Air
Volume
cfm
External Static - in. w.g.
0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
Field Furnished Kit ZA02
1200 687 0.23 757 0.26 826 0.29 893 0.32 955 0.35 1008 0.39 1054 0.42 1095 0.46
1300 730 0.27 798 0.30 864 0.33 926 0.37 982 0.40 1030 0.44 1073 0.47 1116 0.51
1400 775 0.31 840 0.34 902 0.38 959 0.42 1009 0.46 1054 0.50 1096 0.53 1140 0.56
1500 820 0.36 881 0.40 939 0.44 993 0.49 1039 0.53 1082 0.56 1124 0.59 1168 0.62
1600 864 0.42 921 0.46 976 0.51 1027 0.56 1072 0.60 1113 0.63 1155 0.66 1198 0.69
1700 907 0.48 961 0.53 1013 0.58 1061 0.63 1105 0.67 1146 0.70 1187 0.73 1230 0.77
1800 948 0.56 999 0.61 1049 0.66 1096 0.71 1139 0.75 1180 0.78 1221 0.82 1262 0.86
1900 987 0.64 1037 0.69 1086 0.74 1132 0.79 1174 0.83 1214 0.86 1255 0.90 1295 0.95
2000 1028 0.73 1076 0.78 1123 0.83 1168 0.87 1210 0.91 1250 0.96 1289 1.00 1328 1.06
Air
Volume
cfm
External Static - in. w.g.
0.90 1.00 1.10 1.20 1.30 1.40 1.50 1.60
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
Kit ZA02 Kit ZA05
1200 1139 0.49 1187 0.52 1234 0.54 1276 0.58 1314 0.62 1350 0.66 1385 0.71 1421 0.75
1300 1161 0.54 1208 0.57 1254 0.60 1295 0.64 1332 0.69 1366 0.73 1401 0.78 1436 0.83
1400 1185 0.59 1232 0.63 1276 0.67 1315 0.71 1351 0.76 1384 0.81 1419 0.86 1454 0.90
1500 1212 0.66 1257 0.70 1299 0.74 1337 0.79 1371 0.84 1404 0.89 1438 0.94 1473 0.99
1600 1242 0.73 1284 0.77 1324 0.82 1360 0.88 1394 0.93 1426 0.99 1460 1.04 1495 1.08
1700 1272 0.81 1312 0.86 1350 0.92 1385 0.98 1418 1.04 1451 1.09 1485 1.14 1519 1.19
1800 1302 0.90 1341 0.96 1377 1.02 1411 1.08 1444 1.15 1477 1.20 1510 1.25 1544 1.30
1900 1334 1.01 1371 1.07 1406 1.13 1439 1.20 1471 1.26 1504 1.32 1537 1.37 1571 1.41
2000 1365 1.12 1401 1.19 1435 1.25 1468 1.32 1500 1.38 1532 1.44 1565 1.49 1598 1.53