Lennox ZHA092 User manual

2014
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.
Table Of Contents
Dimensions Page 2.................................
Shipping and Packing List Page 3....................
General Page 3....................................
Safety Page 3.....................................
Unit Support Page 4................................
Duct Connection Page 4............................
Rigging Unit For Lifting Page 5.......................
Condensate Drains Page 5..........................
INSTALLATION
INSTRUCTIONS
ZHA092
ZHA102
ZHA120
(7.5- Ton)
(8.5 -Ton)
(10 -Ton)
HEAT PUMP PACKAGED UNITS
507257-01
7/2014
Electrical Connections Page 6.......................
Unit Power-Up Page 6..............................
Blower Operation and Adjustments Page 7............
Heating Start-Up Page 13............................
Cooling Start-Up Page 13............................
Electric Heat Start-Up Page 17........................
Defrost Control Board Page 18........................
Service Page 19....................................
RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE
EVAPORATOR
COIL
CONDENSER
FANS
CONDENSER
COIL
COMPRESSORS
BLOWER
MOTOR
ELECTRIC HEAT
(OPTIONAL)
F4 FUSE
BLOCK
(OPTIONAL)
BLOWER
HOUSING
INVERTER
(OPTIONAL)
ELECTRIC HEAT
CONTROLS
20 x 24 x 2”
FILTERS
(BEHIND COIL)
TB1 LOW VOLTAGE
TERMINAL STRIP
TB13 HIGH VOLTAGE
TERMINAL STRIP
TB2 TERMINAL
BLOCK (OPTIONAL)

Page 2
ZH 092, 102 & 120 DIMENSIONS
END VIEW
FRONT VIEW
LIFTING HOLES
(FOR RIGGING)
POWER
ENTRY
1
(25)
FORKLIFT SLOTS
(BOTH SIDES)
HORIZONTAL
RETURN
HORIZONTAL
SUPPLY
TOP VIEW
BOTTOM RETURN
AIR OPENING
BOTTOM
SUPPLY
AIR
OPENING
BASE
BOTTOM
POWER ENTRY
(See Table)
5 (127)
28-1/4
(718)
58-1/8
(1476)
6 (152)
B
A
C
18
(457) 14
(356)
16
(406)
1-3/4 (44)
7/8 (23)
7/8 (23)
POWER
24V
ACC.
1-1/4
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
39
(991)
28-1/4
(718)
39-3/8
(1000)
14-1/2
(368)
60-1/8
(1527)
BASE
95-3/8
(2423)
10-1/2
(267)
15
(381)
10-1/2
(267)
93-3/8
(2372)
48-7/8
(1241)
3-1/2 (89)
TYP.
95-3/8
(2423)
26-5/8
(676)
38-5/8
(981)
3-3/8
(86)
3-3/8
(86)
30-1/4
(768)
37-3/4
(959)
42-5/8
(1083)
14-5/8
(371)
14-1/2
(368)
6 (152)
38-3/4
(984)
5-3/16
(132)
48-7/8
(1241)
6-7/8
(175)
60-1/8
(1527)
8-3/4
(222)
CONDENSATE
OUTLET
END VIEW
BASE

Page 3
CAUTION
Danger of sharp metallic edges. Can cause injury.
Take care when servicing unit to avoid accidental
contact with sharp edges.
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.
The ZH packaged rooftop units are available in 7-1/2,
8‐1/2 and 10 ton cooling capacities. Optional electric
heat is available.
Units are available with an optional supply air inverter.
During cooling, the blower will operate at lower speeds
when demand is low and increase to higher speeds
when demand is high. During a blower only demand, the
blower will operate at low speed. During a heating
demand, the blower will operate at high speed.
Availability of units and options varies by brand.
Safety
See figure 1 for unit clearances.
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.
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.
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. Follow
lighting instructions attached to unit
when putting unit back into operation
and after service or maintenance.
UNIT CLEARANCES
FIGURE 1
OUTDOOR AIR
HOOD
D
C
B
A
1Unit
Clearance
A
in.(mm)
B
in.(mm)
C
in.(mm)
D
in.(mm)
Top
Clearance
Service
Clearance
36
(914)
36
(914)
60
(1524)
36
(914)
Unob
structed
Minimum Opera
tion Clearance
36
(914)
36
(914)
60
(1524)
36
(914)
Unob
structed
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.

Page 4
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-filters must be
removed upon construction completion.
 The input rate and temperature rise must be set per
the unit rating plate.
 The heat exchanger, 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, ignition, input rate, temperature
rise and venting) must be verified according to these
installation instructions.
Unit Support
In downflow discharge installations, install the unit on a
non-combustible surface only. Unit may be installed on
combustible surfaces when used in horizontal discharge
applications or in downflow discharge applications when
installed on an Z1CURB roof mounting frame.
NOTE - Securely fasten roof frame to roof per local codes.
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 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 of unit base.
Supports must be constructed of steel or suitably
treated wood materials.
NOTE-When installing a unit on a combustible surface for
downflow discharge applications, an 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 approximately 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 weather-proofed with
flashing and sealing compounds in accordance with
applicable codes. Any duct passing through an
unconditioned space must be insulated.
CAUTION
In downflow applications, do not drill or punch
holes in base of unit. Leaking in roof may occur if
unit base is punctured.

Page 5
Rigging Unit For Lifting
Rig unit for lifting by attaching four cables to holes in unit
base rail. See figure 2.
1- Detach wooden base protection before rigging.
2- Connect rigging to the unit base using both holes in
each corner.
3- All panels must be in place for rigging.
4- 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.)
5- All Units -
Partially lift unit and remove five (5) L-brackets which
secure the protective base board. See figure 2.
Important - Protective wooden base board
must be removed before setting unit.
6- New roof curbs (89-3/8” in length) -
Remove the three alignment brackets shown in figure 3.
7- Existing roof curbs (81-3/4” in length) -
Set unit on roof curb positioning alignment brackets
as shown in figure 3.
FIGURE 2
CAUTION - Do not
walk on unit.
IMPORTANT - ALL
PANELS MUST BE IN
PLACE FOR RIGGING.
RIGGING - ALL UNITS
LIFTING POINT SHOULD
BE DIRECTLY ABOVE
CENTER OF GRAVITY
*Maximum weight with all avail
able installed accessories.
1270
ZH 576
Unit *Weight
Lbs. Kg.
REMOVE FIVE (5)
L-BRACKETS AND BASE
PROTECTION BOARD
FIGURE 3
UNIT ALIGNMENT BRACKETS
THREE (3) UNIT
ALIGNMENT
BRACKETS
ROOF CURB
NEW ROOF CURBS (89-3/8” IN LENGTH):
Remove all three brackets.
EXISTING ROOF CURBS (81-3/4” LONG):
Set unit on roof curb positioning alignment brackets as shown.
Condensate Drains
Make drain connection to the 1” N.P.T. 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 4. 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 page 2 for condensate drain location.
Units are shipped with the drain coupling facing the right
side of the unit. The unit can be installed in either
downflow or horizontal air discharge regardless of
condensate drain location.
FIGURE 4
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 DRAIN CONNECTION
CAULK AROUND CONDENSATE COUPLING

Page 6
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- 230/460/575 volt units are factory wired. For 208V
supply, disconnect the pink wire (230V) at all control
power transformer(s). Reconnect the pink wire
(208V). Tape the exposed end of the 230V pink wire.
2- Route power through the bottom power entry area
and connect to L1, L2, and L3 on the bottom of
TB13 in control box. Route power to S48
disconnect switch when the option is
factory-installed. See unit wiring diagram.
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 (1524mm)
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
B-Control Wiring
1- Route thermostat cable or wires from subbase to
control box (refer to unit dimensions to locate bottom
and side power entry).
IMPORTANT - Unless field thermostat wires are rated
for maximum unit voltage, they must be routed away
from line voltage wiring. Use wire ties located near the
lower left corner of the controls hat section to secure
thermostat cable.
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 TB1 terminal board on
the left side of the controls area. Wire as shown in
figure 5 for electro-mechanical and electronic
thermostats. If using other temperature control
devices or energy management systems see
instructions and wiring diagram provided by
manufacturer.
FIGURE 5
24 VOLT FIELD WIRING WITH ELECTRONIC AND
ELECTRO-MECHANICAL THERMOSTATS
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
on units equipped with an
economizer.
A2 THERMOSTAT
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.
Unit Power-Up
A-General
1- Make sure that unit is installed in accordance with the
installation instructions and applicable codes.
2- Inspect all electrical wiring, both field‐ and
factory‐installed, for loose connections. Tighten as
required.
3- Check to ensure that refrigerant lines do not rub
against the cabinet or against other refrigerant lines.
4- Check voltage at main unit power connection.
Voltage must be within range listed on nameplate. If
not, consult power company and have voltage
condition corrected before starting unit.
5- Make sure filters are in place before start‐up.
6- Make sure there is no heating, cooling, or blower
demand from thermostat. Apply power to unit.

Page 7
Blower Operation and Adjustments
A-Three Scroll Compressor Voltage Phasing
Three phase scroll compressors must be phased
sequentially to ensure correct compressor and blower
rotation and operation. Compressor and blower are
wired in phase at the factory. Power wires are
color-coded as follows: line 1-red, line 2-yellow, line
3-blue.
1- Observe suction and discharge pressures and
blower rotation on unit start-up.
If pressure differential is not observed or blower rotation is
not correct:
2- Suction pressure must drop, discharge pressure
must rise, and blower rotation must match rotation
marking.
3- Disconnect all remote electrical power supplies.
4- Reverse any two field-installed wires connected to
the line side of K3, TB2 or F4. Do not reverse wires
at blower contactor or compressors.
5- Make sure the connections are tight.
Discharge and suction pressures should operate at
their normal start‐up ranges.
B-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- Blower operation is manually set at the thermostat
subbase fan switch. With fan switch in ON position,
blowers will operate continuously.
2- With fan switch in AUTO position, the blowers will
cycle with demand. Blowers and entire unit will be off
when system switch is in OFF position.
C-Blower Access
The blower assembly is secured to a sliding frame which
allows the blower motor to be pulled out of the unit. See
figure 6.
1- Loosen the reusable wire tie which secures the
blower wiring to the blower motor mounting plate.
2- Remove and retain screws on either side of sliding
frame. Pull frame toward outside of unit.
3- Slide frame back into original position when finished
servicing. Reattach the blower wiring in the previous
location on the blower motor base using the wire tie.
4- Replace retained screws on either side of the sliding
frame.
STANDARD BLOWER ASSEMBLY
TO INCREASE BELT TENSION
1- Loosen four bolts securing motor mounting base
to frame.
2- Turn adjusting bolt to the right, or clockwise, to
move the motor away from the blower housing.
IMPORTANT - Gap between end of frame and motor
mounting base should be equal at both ends, i.e. par

allel along gap.
3- Tighten four bolts securing motor mounting base
to frame.
4- Relieve tension on two adjusting bolts.
FIGURE 6
PULLEY
MOTOR
SIDE VIEW
ALLEN
SCREW
BELT ADJUSTING BOLTS
- TURN CLOCKWISE
TO TIGHTEN BELT
MOTOR
MOUNTING
BASE
LOOSEN BEFORE
ADJUSTING BELT TENSION
(TWO EACH SIDE)
MOTOR
BLOWER
HOUSING
BLOWER
FRAME
GAP BETWEEN EDGES SHOULD
BE PARALLEL ON BOTH ENDS
BEFORE TIGHTENING MOTOR
MOUNTING BASE IN PLACE

Page 8
D-Determining Unit CFM
1- The following measurements must be made with a
dry indoor coil and air filters in place.
Units Not Equipped With An Inverter -
Run blower without a cooling demand.
Units Equipped With An Inverter -
Initiate high speed blower without a cooling demand.
Disconnect high pressure switches S4 and S7. Run
the blower with Y1 and Y2 demands.
2- Measure the indoor blower shaft RPM.
3- 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 7.
Note - Static pressure readings can vary if not taken
where shown.
4- Referring to page 10 or 11, use static pressure and
RPM readings to determine unit CFM. Use page 12
when installing units with any of the optional
accessories listed.
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 6. Do not exceed minimum
and maximum number of pulley turns as shown in
table 1.
6- Units Equipped With An Inverter -
Reconnect high pressure switches S4 and S7.
TABLE 1
MINIMUM AND MAXIMUM PULLEY ADJUSTMENT
Belt Minimum
Turns Open
Maximum
Turns Open
A Section 0 5
B Section 1* 6
*No minimum number of turns open when B belt is used on
pulleys 6” O.D. or larger.
E-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 in the pulley grooves. Make sure blower and motor
pulleys are aligned as shown in figure 8.
1- Loosen four bolts securing motor base to mounting
frame. See figure 6.
2- To increase belt tension -
Turn both adjusting bolts to the right, or clockwise, to
move the motor outward and tighten the belt. This
increases the distance between the blower motor and
the blower housing.
To loosen belt tension -
Turn the adjusting bolts to the left, or
counterclockwise to loosen belt tension.
IMPORTANT - Align top edges of blower motor base and
mounting frame base parallel before tightening two bolts
on the other side of base. Motor shaft and blower shaft
must be parallel.
3- Tighten two bolts on each side of the motor mounting
base. This secures the mounting base to the frame.
FIGURE 7
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 9
FIGURE 8
PULLEY ALIGNMENT
BELT
BLOWER
PULLEY
MOTOR
PULLEY
NOT ALIGNED
ALIGNED
F-Check Belt Tension
Overtensioning belts shortens belt and bearing life.
Check belt tension as follows:
1- Measure span length X. See figure 9.
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 new 2 and 3hp
belt, the deflection force should be 5.0-7.0 lbs.
(35-48kPa). For a new 5hp belt, the deflection force
should be 7-10lbs. (48-69kPa).
A force below these values indicates an
undertensioned belt. A force above these values
indicates an overtensioned belt.
MEASURE BELT TENSION
FIGURE 9
DEFLECTION 1/64” PER INCH OF SPAN
OR 1.5mm PER 100mm OF SPAN
FORCE
F-Field-Furnished Blower Drives
For field-furnished blower drives, use pages 10 through
12 to determine BHP and RPM required. Reference table
2 for drive component manufacturer's numbers.

Page 10
BLOWER DATA
092S STANDARD EFFICIENCY BELT DRIVE BLOWER − BASE UNIT
BLOWER TABLE INCLUDES RESISTANCE FOR BASE UNIT ONLY (NO HEAT SECTION) WITH DRY INDOOR COIL AND AIR
FILTERS IN PLACE. FOR ALL UNITS ADD:
1 − Wet indoor coil air resistance of selected unit.
2 − Any factory installed options air resistance (heat section, economizer, etc.)
3 − Any eld installed accessories air resistance (duct resistance, diffuser, etc.)
Then determine from blower table blower motor output required.
See page 12 for blower motors and drives.
See page 12 for wet coil and option/accessory air resistance data.
MINIMUM AIR VOLUME REQUIRED FOR USE WITH OPTIONAL ELECTRIC HEAT (Maximum Static Pressure - 2.0 in. w.g.)
7.5kW, 15 kW, 22.5 kW - 2065 cfm
30 kW - 2250 cfm
45 kW - 2625 cfm
Total
Air
Volume
cfm
Total Static Pressure − in. w.g.
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1750 494 0.11 562 0.34 632 0.56 702 0.74 771 0.85 838 0.96 902 1.07 961 1.19 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
2000 514 0.26 581 0.49 650 0.70 719 0.87 786 0.98 852 1.09 915 1.20 972 1.32 1026 1.47 1076 1.65 - - - - - - - - - - - - - - - - - -
2250 533 0.41 599 0.62 667 0.82 735 0.99 802 1.10 866 1.21 928 1.33 984 1.46 1037 1.63 1085 1.81 1132 2.01 1178 2.21 1226 2.43
2500 553 0.55 619 0.76 685 0.95 753 1.10 818 1.22 881 1.34 942 1.47 997 1.62 1048 1.80 1096 1.99 1142 2.20 1188 2.41 1237 2.64
2750 573 0.70 638 0.90 705 1.08 771 1.22 835 1.35 897 1.49 957 1.63 1011 1.80 1061 1.99 1108 2.19 1154 2.41 1200 2.63 1249 2.87
3000 594 0.85 659 1.05 725 1.22 791 1.36 853 1.50 915 1.65 973 1.81 1026 1.99 1075 2.20 1121 2.42 1167 2.64 1213 2.87 1262 3.12
3250 617 1.01 682 1.20 747 1.37 812 1.52 873 1.67 934 1.83 990 2.01 1042 2.21 1089 2.43 1135 2.66 1181 2.90 1228 3.13 1277 3.38
3500 640 1.17 706 1.36 771 1.53 834 1.70 895 1.86 954 2.03 1008 2.23 1058 2.46 1105 2.69 1150 2.93 1196 3.17 1243 3.41 1293 3.65
3750 665 1.34 731 1.54 796 1.72 857 1.89 917 2.07 975 2.26 1027 2.48 1076 2.72 1121 2.97 1166 3.22 1212 3.46 1261 3.71 1311 3.96
4000 692 1.54 758 1.75 822 1.93 882 2.11 940 2.30 996 2.51 1047 2.76 1094 3.02 1139 3.27 1184 3.52 1230 3.77 1280 4.03 1330 4.29
4250 722 1.76 787 1.97 849 2.15 908 2.35 965 2.56 1018 2.79 1067 3.06 1113 3.33 1157 3.59 1202 3.85 1250 4.11 1300 4.38 1352 4.65