ClimateMaster OB Series User manual

INSTALLATION INSTRUCTIONS
ENERGY RECOVERY VENTILATOR SERIES OB, OC, OD, OE, OF & OG
Energy recovery COMPONENT certified to the ARIAir-to-
Air Energy Recovery Ventilation Equipment Certification
Program in accordance with ARI Standard 1060-2000.
Actual performance in packaged equipment may vary.
ETL Certified per UL 1995 and CSA 22.2
97B0042N06
Rev.: 04 April, 2014
Installation Instructions For Energy Recovery Ventilator (Fixed)
For Stand Alone Rooftop Application
Inspection
Upon receipt of shipment at the job site, carefully check the
shipment against the bill of lading. Make sure all units have
been received. Inspect the carton or crating housing of each
Rooftop Unit and inspect each unit for damage. Assure that
the carrier makes proper notation of any shortages or damage
on all copies of the freight bill and that he completes a Carrier
Inspection Report. Concealed damage not discovered during
unloading must be reported to the carrier within 15 days of
receipt of shipment. NOTE: It is the responsibility of the
purchaser to file all necessary claims with the carrier.
Storage
Upon the arrival of equipment at the job site, immediately store
units in a clean, dry area. Do not stack units. Do not remove
equipment from pallets until equipment is required for
installation.
Unit Protection
Cover rooftop units on the job site. Cap the open ends of pipes.
In areas where painting, plastering, roofing, or the spraying of
fireproof material has not been completed, all due precautions
must be taken to avoid physical damage to the units and
contamination by foreign material. Physical damage and
contamination may prevent proper start-up and may result
in costly equipment cleanup.
Application
Field supplied balancing dampers in duct are recommended.
Recovery Wheel Mode
The Recovery Wheel mode is accomplished by two blowers
providing continuous exhaust of stale indoor air and
replacement by equal amount of outdoor air. Energy recovery
is achieved by slowly rotating the energy recovery wheel within
the cassette frame work. In winter, the ERV adsorbs heat
and moisture from the exhaust air stream during one half of a
complete rotation and gives them back to the cold, drier intake
air supply during the other half rotation. In summer, the process
is automatically reversed. Heat and moisture are absorbed
from incoming fresh air supply and transferred to the exhaust
air stream. This process allows outdoor air ventilation rates
to be increased by factors of three or more without additional
energy penalty or increase in size of heating or air conditioning
systems.
Rigging Unit For Lifting
1. Maximum weight 300-1200 lbs. See Physical Data Table.
2. Remove crating.
3. All panels must be in place for rigging.
4. Remove barometric exhaust hood from door marked filter
access. Install barometric exhaust hood over exhaust blower
outlet.
5. Forklift channels must be removed from the base of
ERV.
6. Position unit and provide service access to ERV control
access door and wheel.
7. Duct work should be installed into roof curb before installing
ERV on curb.
8. Roof curb gasket must be applied to all top surfaces of the
curb.
9. Position unit on roof curb and provide service access to ERV
control access door and wheel.
 CAUTION! 
CAUTION! Danger of sharp metallic edges. Can cause
injury. Take care when servicing unit to avoid accidental
contact with sharp edges.
 WARNING! 
WARNING! Electric shock hazard. Can cause injury or death.
Before attempting to perform any service or maintenance,
turn the electrical power to unit OFF at disconnect switch(es).
Unit may have multiple power supplies.
 WARNING! 
WARNING! To avoid equipment damage, do not use these
units as a source of heat during the construction process.
The mechanical components and filters used in these units
will quickly become clogged with construction dirt and debris
which may cause system damage.
 WARNING! 
WARNING! The installation of water-source heat pumps and
all associated components, parts, and accessories which
make up the installation shall be in accordance with the
regulations of ALL authorities having jurisdiction and MUST
conform to all applicable codes. It is the responsibility of
the installing contractor to determine and comply with ALL
applicable codes, regulations and ANSI/NFPA No. 70

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
O (ERV) Series
Rev.: 04 April, 2014
2ClimateMaster Water-Source Heat Pumps
This Page Intentionally Left Blank

THE SMART SOLUTION FOR ENERGY EFFICIENCY
O (ERV) Series
Rev.: 04 April, 2014
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Installation
Fresh Air Hood Assembly (See Figure1)
1. Attach duct work to duct flanges on roof curb.
2. Remove forklift channels from base of ERV.
3. Set ERV on curb. Verify ERV is positioned on curb properly.
4. Remove barometric exhaust hood from door marked filter
access. Install barometric exhaust hood over exhaust
blower outlet.
5. Remove ERV control access panel to connect field wiring.
6. Route class II low voltage wire (3 conductor) from
thermostat or energy management through small bushing in
end panel of ERV. See wiring diagram.
a. Thermostat (dependent) - connect in parallel at rooftop
unit with “G”, “C” and “W”. Then connect matching color
at terminal 1, 2, and 3 respectively on ERV circuit board.
b. Energy Management - provide +24 VAC to “1” and
common, 24 VAC to “2” terminals on ERV circuit board.
c. Thermostat (dedicated) - splice into +24 vac (blue wire)
at (control circuit board) transformer connection run wire
to “R” terminal. Then run another wire from “G” terminal
to ERV (control circuit board) terminal block #1.
7. All electrical connections must conform to any local codes
and current National Electric Codes (NEC) and Canadian
Electric Codes (CEC). Refer closely to unit wiring diagram
in unit and/or in these instructions for proper wiring
connections.
8. Refer to the unit nameplate for minimum circuit ampacity
(MCA) and maximum overcurrent protection size (fuse).
9. Electrical data is listed on unit rating plate and motor name
plates.
10. Connect line voltage power supply to ERV fuse block in
control box of unit from disconnect switch. See wiring
diagram.
11. Ground unit with a suitable ground connection either
through unit supply wiring or an earth ground.
Note: Unit voltage entries must be sealed weather tight
after wiring is complete.
12. Remove motor access panels. Locate belts fastened to
blower assembly. Install belt onto motor and blower pulley.
Adjust motor sheave to correct blower RPM for CFM and
external static pressure requirements. See charts in this
instruction. Multiple pulley arrangements are available to
meet the entire range.
13. Replace access panel onto the ERV unit and secure.
14. Restore power to unit.
15. Cleanup once unit is operating properly, caulk any open
joints, holes or seams to make the units completely air and
water tight.
16. Leave this instruction manual with owner or in an envelope
to be kept near unit.
Operation
(How It Works)
The unit contains an Energy Recovery Wheel (ERW) that is a
new concept in rotary air-to-air heat exchangers. Designed as a
packaged unit for ease of installation and maintenance, only the
connection of electrical power is required to make the system
operational.
When slowly rotating through counter flowing exhaust and fresh
 CAUTION! 
CAUTION! Blower speed must be adjusted for the given
external static pressure and airflow (CFM) requirements. If
blower speed is not adjusted for conditions, possible motor
over loading can occur.
(E)
(B)
(C)
(A)
(F)
(D)
(G)
(H)
ASSEMBLED FRESH AIR HOOD
Figure 1

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
O (ERV) Series
Rev.: 04 April, 2014
4ClimateMaster Water-Source Heat Pumps
air streams the ERW adsorbs sensible heat and latent heat
from the warmer air stream and transfer this total energy to the
cooler air stream during the second half of its rotating cycle.
Rotating at 50-60 revolutions per minute, the wheel provides
constant flow of energy from warmer to cooler air stream.
The large energy transfer surface and laminar flow through
the wheel causes this constant flow of recovered energy to
represent up to 85% of the difference in total energy contained
within the two air streams.
Sensible and latent heat are the two components of total heat.
Sensible heat is energy contained in dry air and latent heat is
the energy contained within the moisture of the air. The latent
heat load from the outdoor fresh air on an air conditioning
system can often be two to three times that of the sensible heat
load and in the winter it is a significant part of a humidification
heat load.
During both the summer and winter, the ERW transfers mois-
ture entirely in the vapor phase. This eliminates wet surfaces
that retain dust and promote fungal growth as well as the need
for a condensate pan and drain to carry water.
Because it is constantly rotating when in the air stream, the
ERV is always being cleaned by air, first in one direction then
the other. Because it is always dry, dust or other particles
impinging on the surface during one half cycle, are readily
removed during the next half cycle.
During the heating season, when outdoor air temperatures
are below 15ºF, it is recommended to use the (optional) low
ambient kit (field installed).
Low Ambient Kit is appropriate for climates with limited HVAC
system operation when outdoor temperatures are below 10ºF.
The frost threshold is the outdoor temperature at which frost
will begin to form on the ERV wheel. For Energy Recovery
Ventilators, the frost threshold is typically below 10ºF. Frost
threshold is dependent on indoor temperature and humidify.
The table shows how the frost threshold temperatures vary
depending on indoor conditions.
Because Energy Recovery Ventilators have a low frost
threshold, frost control options are not necessary in many
climates. Where outdoor temperatures may drop below the frost
threshold during the ERV operational hours, exhaust only frost
control option is available.
Low Ambient Kit (Optional)
Low Ambient Kit turns off the supply blower when outdoor
temperatures fall below the frost threshold. The exhaust only
thermostat set points are field adjustable. Supply fan operation
is automatically restored when the exhaust air temperature rises
above the thermostat set point. Provisions for introducing make-
up air into the building when the supply blower is off to avoid
depressurization should be considered.
Recovery Wheel Mode
On a thermostat call for blower operation in heating, cooling or
continuous blower, the ERW will rotate between fresh air and
exhaust air streams. Both the fresh air and exhaust air blowers
will also be operating to overcome the air resistance of the ERV.
System Check
1. Disconnect main power.
2. Turn to “Cont” for blower operation on thermostat controlled
models.
3. Restore power to unit. Observe ERV wheel rotation and
both fresh air and exhaust air blowers will operating.
NOTE: If Low ambient kit is used the jumper between
TB37-5 & TB37-6 should be removed. Also if system
check out is being conducted at low ambient
temperatures, technician should be aware that this kit
can cause system not to operate.
4. Verify that the ERV (3) three phase blower motors are
phased sequentially ensuring correct rotation and operation.
a. Disconnect power.
b. Reverse any two field power leads to the ERV.
c. Reapply power.
5. Verify that both blower motors are operating under their
full load AMP rating (FLA). The FLA can be found on each
motor and the unit nameplate.
A. Return Damper Settings
Manually adjust position of field installed dampers to
balance air flow.
B. Air Flow / Blower Speed Adjustment
Blower speed selection is accomplished by changing the
sheave setting on both fresh air and exhaust air blowers. To
set ERV for the required air flow (CFM), the external static
pressure applied to the ERV (duct static) must be known.
See the CFM vs External Static Pressure chart for the
appropriate unit to determine the correct blower RPM for
the specified CFM and External Static Pressure.
After blower speed adjustments have been made. Ensure that
when the belt is replaced it is tensioned correctly. The motor
mounting plate can be adjusted to tension the belt. If using a
belt tension checker, adjust the span to the appropriate setting
and check the belt defection force. The belt deflection force
should be between 5-8 lbs or the lowest tension at which the
FROST THRESHOLD TEMPERATURE
INDOOR RH AT 70ºF FROST THRESHOLD
TEMPERATURE
20% 0ºF
30% 5ºF
40% 10ºF

THE SMART SOLUTION FOR ENERGY EFFICIENCY
O (ERV) Series
Rev.: 04 April, 2014
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belt will not slip under peak load conditions.
1. Disconnect main power to unit before making adjustment to
economizer and/or ERV unit.
2. Replace ERV control access cover.
3. Set thermostat to normal operating position.
4. Restore power to unit.
Maintenance
1. All motors use pre-lubricated sealed bearings; no further
lubrication is necessary.
2. Make visual inspection of motors, belts and wheel rotating
bearings during routine maintenance.
3. Eight pie-shaped segments, are seated on stops between
the segment retainer which pivots on the wheel rim and
secured to the hub and rim of wheel. Annual inspection
of the self cleaning wheel is recommended. With power
disconnected, remove ERV access panels (rear) and
unplug [J150 & P150] (Refer to wiring diagram in this
instruction manual). Remove segment and wash with
water and/or mild detergent.
4. To install wheel segments follow steps A through E . See
Figure 2. Reverse procedure for segment removal.
A. Unlock two segment retainers (one on each side of the
selected segment opening.
B. With the embedded stiffener facing the motor side, insert
the nose of the segment between the hub plates.
C. Holding segment by the two outer corners, press the
segment towards the center of the wheel and inwards
against the spoke flanges. If hand pressure does not
fully seat the segment, insert the flat tip of a screw driver
between the wheel rim and outer corners of the segment
and apply downward force while guiding the segment
into place.
D. Close and latch each segment retainer under segment
retaining catch.
E. Slowly rotate the wheel 180º. Install the second segment
opposite the first for counterbalance. Rotate the two
installed segments 90º to balance the wheel while the
third segment is installed. Rotate the wheel 180º again
to install the fourth segment opposite the third. Repeat
this sequence with the remaining four segments.
Pulley Kit Installation
The units are shipped from the factory at the low static setting.
Pulley kits are available for the medium and high static settings.
To install a pulley kit.
1. Check content of pulley kit, if pulley kit contains:
a. An adjustable sheave and a fixed pitch pulley then
remove belt and both motor and blower pulley
b. An adjustable sheave then remove the motor pulley.
c. A fixed pitch pulley then remove the blower pulley.
2. Replace pulley(s) with the pulley(s) from pulley kit. Make
sure each pulley is installed with a key. Tighten the set
screw on the pulley(s) to 100 in.lb.
3. Install the belt that came with the pulley kit. Tension belt as
explained in the blower speed adjustment section.
4. Check the speed of the blower. Adjust the motor sheave to
increase or decrease the speed of the blower. See blower
adjustment section.
B
C
A
D
E
D
HUB
SEGMENT
SPOKE
SEGMENT RETAINER CATCH
WHEEL RIM
SEGMENT RETAINER
Figure 2

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
O (ERV) Series
Rev.: 04 April, 2014
6ClimateMaster Water-Source Heat Pumps
ERV with Horizontal Ductwork
(balancing damper(s) field supplied)
Features and Notes:
1. Stand alone design allows higher levels of outdoor air
to be introduced into the a/c space.
2. Static test ports provided to verify intake and exhaust
CFM.
3. Balancing damper(s) is field provided when connected
to ductwork. System will not operate properly without
balancing damper.
4. Roof curbs are available for the ERV’s.
5. See blower performance charts for airflow at various
E.S.P.
6. Filter rack with 2" pleated filters included.
A
C
14
K
L
B
D
D
E
I
G
H
F
H
B
C
A
J
ERV Data Dimensional Data
ERV
Series CFM Range A B C D E F G H I J K L
O11-B 300-1100 56.75 32.13 39.50 11.00 27.00 6.50 10.00 2.56 1.00 11.00 55.00 30.25
O20-C 1200-2000 54.38 37.25 37.50 12.00 30.00 8.00 4.00 3.63 1.50 20.32 52.75 35.50
O28-D 1200-2800 60.00 42.63 43.56 14.00 32.00 9.56 4.50 5.31 1.50 18.32 49.50 41.00
O36-E 2000-3600 60.00 46.69 57.37 16.50 39.50 12.13 6.38 3.59 5.88 18.32 55.75 41.81
O46-F 3000-4600 60.00 52.69 57.37 16.50 39.50 12.13 6.38 6.59 5.88 18.32 55.75 47.81
O62-G 4600-6200 72.00 70.88 63.63 19.50 39.50 12.13 6.50 15.69 5.88 18.32 67.75 66.00
O Series Stand Alone ERV’s for Over and Under Duct Arrangements
ERV Roof Curbs
Series Model Number
OB ACURBEVFB
OC ACURBEVFC
OD ACURBEVFD
OE ACURBEVFE
OF ACURBEVFF
OG ACURBEVFG

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O (ERV) Series
Rev.: 04 April, 2014
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Notes:
1. Remove jumper to install field optional low ambient switch.
2. Selective voltage terminals for proper unit voltage.
3. Optional low ambient switch.
4. Optional motorized intake damper.
5. Optional Stop, Start and Jog Control.
6. For energy management systems connect +24v to “G” and common 24v to “C”.
OB-OC
208/230-1-60
ERV UNIT SCHEMATIC DIAGRAM
COMPONENT CODE
A131 Fixed Relay Board
B26 Motor, Exhaust Air
B27 Motor, Fresh Air
B28 Motor, Desiccant Wheel
B30 Motor, Damper (Optional)
C23 Capacitor, Wheel Motor
C25 Capacitor, Exhaust Air
C26 Capacitor, Fresh Air
DL43 Delay, Cycle Timer (Optional)
F29 Fuse
J33 Jack, Cycle Control (Optional)
J34 Jack, Cycle Control Harness (Optional)
J40 Jack, Cycle (Optional)
J48 Jack, Control Box (Fresh Air)
J50 Jack, Control Box (Wheel)
J51 Jack, Control Box (Exhaust Air)
J56 Jack, Control Box (Damper)
J148 Jack, Fresh Air Motor Harness
J150 Jack, Wheel Motor Harness
J151 Jack, Exhaust Air Motor Harness
J160 Jack, Damper Motor Harness
K94 Relay, On/Off (Optional)
K163 Contactor, Exhaust Air Motor
K164 Contactor, Fresh Air Motor
P33 Plug, Cycle Control (Optional)
P34 Plug, Cycle Control Harness (Optional)
P40 Plug, Wheel Cycle (Optional)
P48 Plug, Fresh Air Motor Harness
P50 Plug, Wheel Motor Harness
P51 Plug, Exhaust Air Motor Harness
P56 Plug, Damper Motor Harness
P148 Plug, Fresh Air Motor
P150 Plug, Wheel Motor
P151 Plug, Exhaust Air Motor
P160 Plug, Damper Motor
S23 Thermostat - Low Ambient (Optional)
S26 Switch, Low Ambient (Optional)
S51 Switch, Door
S125 Switch, Ambient Override (Optional)
T27 Transformer, Control
T28 Transformer, Step-down (Optional)
WIRE COLOR
BK Black
BL Blue
GR Green
GY Gray
OR Orange
PK Pink
RD Red
WH White
YL Yellow

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
O (ERV) Series
Rev.: 04 April, 2014
8ClimateMaster Water-Source Heat Pumps
Notes:
1. Remove jumper to install field optional low ambient switch.
2. Step-down transformer assembly for 460/575 volt units.
3. Selective voltage terminals for proper unit voltage.
4. Optional low ambient switch.
5. Optional motorized intake damper.
6. Optional Stop, Start and Jog Control.
7. For energy management systems connect +24v to “G” and common 24v to “C”. OB-G
208/230-3-60
460-3-60
575-3-60
COMPONENT CODE
A131 Fixed Relay Board
B26 Motor, Exhaust Air
B27 Motor, Fresh Air
B28 Motor, Desiccant Wheel
B30 Motor, Damper (Optional)
C23 Capacitor, Wheel Motor
DL43 Delay, Cycle Timer (Optional)
F29 Fuse
J33 Jack, Cycle Control (Optional)
J34 Jack, Cycle Control Harness (Optional)
J40 Jack, Cycle (Optional)
J48 Jack, Control Box (Fresh Air)
J50 Jack, Control Box (Wheel)
J51 Jack, Control Box (Exhaust Air)
J56 Jack, Control Box (Damper)
J148 Jack, Fresh Air Motor Harness
J150 Jack, Wheel Motor Harness
J151 Jack, Exhaust Air Motor Harness
J152 Jack, Transformer (High Voltage)
J160 Jack, Damper Motor Harness
K94 Relay, On/Off (Optional)
K163 Contactor, Exhaust Air Motor
K164 Contactor, Fresh Air Motor
P33 Plug, Cycle Control (Optional)
P34 Plug, Cycle Control Harness (Optional)
P40 Plug, Wheel Cycle (Optional)
P48 Plug, Fresh Air Motor Harness
P50 Plug, Wheel Motor Harness
P51 Plug, Exhaust Air Motor Harness
P56 Plug, Damper Motor Harness
P148 Plug, Fresh Air Motor
P150 Plug, Wheel Motor
P151 Plug, Exhaust Air Motor
P152 Plug, Transformer (High Voltage)
P160 Plug, Damper Motor
S23 Thermostat - Low Ambient (Optional)
S26 Switch, Low Ambient (Optional)
S51 Switch, Door
S125 Switch, Ambient Override (Optional)
T27 Transformer, Control
T28 Transformer, Step-down (Optional)
WIRE COLOR
BK Black
BL Blue
GR Green
GY Gray
OR Orange
PK Pink
RD Red
WH White
YL Yellow
ERV UNIT SCHEMATIC DIAGRAM

THE SMART SOLUTION FOR ENERGY EFFICIENCY
O (ERV) Series
Rev.: 04 April, 2014
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Desiccant Wheel for Rooftop Unit
208-230V (1 PH)
ERV UNIT WIRING DIAGRAM
Notes:
1. Remove jumper to install field optional low ambient switch.
2. Selective voltage terminals for proper unit voltage.
3. Optional low ambient switch.
4. Optional motorized intake damper.
5. Optional Stop, Start and Jog Control.
6. For energy management systems connect +24v to “G” and common 24v to “C”.

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
O (ERV) Series
Rev.: 04 April, 2014
10 ClimateMaster Water-Source Heat Pumps
OB-G
Desiccant Wheel for Rooftop Unit
208-230/460/575V (3 PH)
ERV UNIT WIRING DIAGRAM
Notes:
1. Remove jumper to install field optional low ambient switch.
2. Step-down transformer assembly for 460/575 volt units.
3. Selective voltage terminals for proper unit voltage.
4. Optional low ambient switch.
5. Optional motorized intake damper.
6. Optional Stop, Start and Jog Control.
7. For energy management systems connect +24v to “G” and common 24v to “C”.

THE SMART SOLUTION FOR ENERGY EFFICIENCY
O (ERV) Series
Rev.: 04 April, 2014
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Mist Eliminator Filter in Intake Hood (1.5HP)
External Static Pressure (in water)
0 0.25 0.5 0.75 1 1.25 1.5
CFM
300 N/A N/A 1175 1350 1450 1605 1730
500 N/A 1170 1340 1540 1655 1725 1840
700 1295 1425 1600 1625 1795 1960 2035
900 1540 1660 1720 1790 2030 2110 2195
1100 1785 1915 2025 2185 N/A N/A N/A
Barometric Hood, 2" Pleated Filters (1.5HP)
External Static Pressure (in water)
0 0.25 0.5 0.75 1 1.25 1.5
CFM
300 N/A N/A 1030 1225 N/A N/A N/A
500 N/A 1025 1180 1265 1425 1535 N/A
700 1120 1190 1340 1445 1540 1646 1720
900 1285 1525 1500 1575 1670 1785 1865
1100 1570 1665 1670 1775 1860 1920 N/A
SUPPLY
EXHAUST
Low 1000-1300 Standard Unit
Medium 1300-1700 Optional Kit
High 1750-2200 Optional Kit
RPM Range
Mist Eliminator Filter in Intake Hood (2HP)
External Static Pressure (in water)
0 0.25 0.5 0.75 1 1.25 1.5
CFM
1200 1055 1135 1295 1420 1540 1650 1725
1400 1140 1240 1340 1490 1600 1690 1795
1600 1200 1330 1460 1565 1645 1740 1830
1800 1320 1405 1525 1615 1705 1785 1885
2000 1415 1515 1605 1690 1775 1875 1960
Barometric Hood, 2" Pleated Filters (2HP)
External Static Pressure (in water)
0 0.25 0.5 0.75 1 1.25 1.5
CFM
1200 1010 1195 1350 1445 1580 1685 1735
1400 1125 1315 1435 1545 1620 1730 1800
1600 1185 1370 1500 1610 1695 1790 1965
1800 1305 1485 1600 1685 1781 1955 2030
2000 1410 1550 1670 1765 1855 N/A N/A
SUPPLY
EXHAUST
RPM Range
Low 1000-1300 Standard Unit
Medium 1300-1700 Optional Kit
High 1700-2080 Optional Kit
Notes:
1. Drive losses included in the above tables.
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only
Notes:
1. Drive losses included in the above tables.
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only
Blower RPM for OB
Blower RPM for OC

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
O (ERV) Series
Rev.: 04 April, 2014
12 ClimateMaster Water-Source Heat Pumps
Mist Eliminator Filter in Intake Hood (3HP)
External Static Pressure (in water)
0 0.25 0.5 0.75 1 1.25 1.5
CFM
1200 N/A 790 960 1110 1210 1315 1380
1600 750 900 1005 1145 1230 1365 1410
2000 900 1005 1105 1210 1275 1400 1450
2400 1005 1125 1210 1275 1365 1450 1500
2800 1125 1230 1315 1380 1450 1535 1600
Barometric Hood, 2" Pleated Filters (3HP)
External Static Pressure (in water)
0 0.25 0.5 0.75 1 1.25 1.5
CFM
1200 750 885 1015 1145 1260 1350 1485
1600 870 1015 1125 1215 1325 1410 1500
2000 1015 1145 1240 1345 1410 1485 1560
2400 1125 1250 1345 1430 1500 1575 1630
2800 1250 1410 1485 1520 1630 1650 1675
SUPPLY
EXHAUST
RPM Range
Low 750-975 Standard Unit
Medium 1008-1314 Optional Kit
High 1311-1708 Optional Kit
Mist Eliminator Filter in Intake Hood (3HP)
External Static Pressure (in water)
0 0.25 0.5 0.75 1 1.25 1.5
CFM
2000 725 825 900 1000 1070 1180 1250
2400 800 900 1000 1070 1160 1250 1275
2800 900 1000 1070 1160 1250 1275 1340
3200 1000 1070 1160 1250 1275 1340 1400
3600 1055 1180 1250 1300 1360 N/A N/A
Barometric Hood, 2" Pleated Filters (3HP)
External Static Pressure (in water)
0 0.25 0.5 0.75 1 1.25 1.5
CFM
2000 750 865 950 1030 1100 1200 1265
2400 820 950 1035 1100 1200 1265 1300
2800 925 1035 1150 1200 1265 1315 1350
3200 1035 1160 1215 1265 1325 1350 1390
3600 1100 1215 1300 1350 1390 N/A N/A
SUPPLY
EXHAUST
RPM Range
Low 725-975 Standard Unit
Medium 1000-1315 Optional Kit
High 1215-1425 Optional Kit
Notes:
1. Drive losses included in the above tables.
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only
Notes:
1. Drive losses included in the above tables.
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only
Blower RPM for OD
Blower RPM for OE

THE SMART SOLUTION FOR ENERGY EFFICIENCY
O (ERV) Series
Rev.: 04 April, 2014
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Mist Eliminator Filter in Intake Hood (5HP)
External Static Pressure (in water)
0 0.25 0.5 0.75 1 1.25 1.5
CFM
3000 965 1085 1150 1230 1295 1345 1420
3400 1035 1145 1250 1290 1335 1415 1475
3800 1120 1245 1285 1315 1440 1470 1535
4200 1215 1305 1355 1430 1465 1530 1595
4600 1300 1375 1450 1460 1540 1590 1650
Barometric Hood, 2" Pleated Filters (5HP)
External Static Pressure (in water)
0 0.25 0.5 0.75 1 1.25 1.5
CFM
3000 1010 1105 1195 1255 1300 1375 1415
3400 1100 1190 1250 1320 1370 1410 1480
3800 1185 1245 1360 1410 1440 1475 1540
4200 1240 1355 1425 1465 1530 1590 1630
4600 1345 1410 1485 1520 1585 1650 1700
SUPPLY
EXHAUST
RPM Range
Low 780-1020 Standard Unit
Medium 1000-1315 Optional Kit
High 1315-1700 Optional Kit
Mist Eliminator Filter in Intake Hood (5HP)
External Static Pressure (in water)
0 0.25 0.5 0.75 1 1.25 1.5
CFM
4600 815 900 975 1045 1085 1125 1175
5000 880 940 1015 1060 1135 1175 1215
5400 915 975 1045 1125 1150 1195 1250
5800 975 1045 1085 1175 1250 1260 N/A
6200 1000 1075 1165 1200 N/A N/A N/A
Barometric Hood, 2" Pleated Filters (5HP)
External Static Pressure (in water)
0 0.25 0.5 0.75 1 1.25 1.5
CFM
4600 825 915 1000 1025 1100 1140 1170
5000 890 975 1025 1100 1140 1170 1240
5400 925 1000 1085 1140 1170 1240 1280
5800 975 1025 1140 1170 1240 N/A N/A
6200 1025 1120 1170 N/A N/A N/A N/A
SUPPLY
EXHAUST
RPM Range
Low 820-1000 Standard Unit
Medium 1000-1200 Optional Kit
High 1175-1375 Optional Kit
Notes:
1. Drive losses included in the above tables.
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only
Notes:
1. Drive losses included in the above tables.
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only
Blower RPM for OF
Blower RPM for OG

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
O (ERV) Series
Rev.: 04 April, 2014
14 ClimateMaster Water-Source Heat Pumps
CLIMATE MASTER, INC. LIMITED EXPRESS WARRANTY/ LIMITATION OF REMEDIES AND LIABILITY
It is expressly understood that unless a statement is specifically identified as a warranty, statements made by Climate Master, Inc., a Delaware corporation, (“CM”) or its representatives, relating to CM’s products, whether oral,
written or contained in any sales literature, catalog or any other agreement, are not express warranties and do not form a part of the basis of the bargain, but are merely CM’s opinion or commendation of CM’s products. EXCEPT AS SPECIFICALLY SET FORTH HEREIN, THERE IS NO EXPRESS WARRANTY AS TO ANY OF CM’S PRODUCTS. CM MAKES NO WARRANTY AGAINST LATENT DEFECTS. CM MAKES NO WARRANTY OF MERCHANTABILITY OF THE GOODS OR OF THE FITNESS OF THE GOODS FOR ANY PARTICULAR PURPOSE.
GRANT OF LIMITED EXPRESS WARRANTY CM warrants CM products purchased and retained in the United States of America and Canada to be free from defects in material and workmanship under normal use and maintenance as follows: (1) All complete air condition- ing, heating and/or heat pump units built or sold by CM for twelve (12) months from date of unit start up or eighteen (18) months from date of shipment (from factory), whichever comes first; (2) Repair and replacement parts, which are not supplied under warranty, for nintey (90) days from date of shipment (from factory). All parts must be returned to CM’s factory in Oklahoma City, Oklahoma, freight prepaid, no later than sixty (60) days after the date of the failure of the part; if CM determines the part to be defective and within CM’s Limited Express Warranty, CM shall, when such part has been either replaced or repaired, return such to a factory recognized dealer, contractor or service organization, F.O.B. CM’s factory, Oklahoma City, Oklahoma, freight prepaid. The warranty on any parts repaired or replaced under warranty expires at the end of the original warranty period. This warranty does not cover and does not apply to: (1) Air filters, fuses, refrigerant, fluids, oil; (2) Products relocated after initial installation; (3) Any portion or component of any system that is not supplied by CM, regardless
of the cause of the failure of such portion or component; (4) Products on which the unit identification tags or labels have been removed or defaced; (5) Products on which payment to CM is or has been in default; (6) Products which have defects or damage which result from improper installation, wiring, electrical imbalance characteristics or maintenance; or are caused by accident, misuse or abuse, fire, flood, alteration or misapplication of the prod- uct; (7) Products which have defects or damage which result from a contaminated or corrosive air or liquid supply, operation at abnormal temperatures, or unauthorized opening of refrigerant circuit; (8) Mold, fungus or bacteria damages; (9) Products subjected to corrosion or abrasion; (10) Products manufactured or supplied by others; (11) Products which have been subjected to misuse, negligence or accidents; (12) Products which have been operated in a manner contrary to CM’s printed instructions; or (13) Products which have defects, damage or insufficient performance as a result of insufficient or incorrect system design or the improper application of CM’s products. CM is not responsible for: (1) The costs of any fluids, refrigerant or other system components, or associated labor to repair or replace the same, which is incurred as a result of a defective part covered by CM’s Limited Express
Warranty; (2) The costs of labor, refrigerant, materials or service incurred in removal of the defective part, or in obtaining and replacing the new or repaired part; or, (3) Transportation costs of the defective part from the installa- tion site to CM or of the return of any part not covered by CM’s Limited Express Warranty.
Limitation: This Limited Express Warranty is given in lieu of all other warranties. If, notwithstanding the disclaimers contained herein, it is determined that other warranties exist, any such warranties, including without limita- tion any express warranties or any implied warranties of fitness for particular purpose and merchantability, shall be limited to the duration of the Limited Express Warranty. LIMITATION OF REMEDIES In the event of a breach of the Limited Express Warranty, CM will only be obligated at CM’s option to repair the failed part or unit or to furnish a new or rebuilt part or unit in exchange for the part or unit which has failed. If after written notice to CM’s factory in Oklahoma City, Oklahoma of each defect, malfunction or other failure and a reasonable number of attempts by CM to correct the defect, malfunction or other failure and the remedy fails of its essential purpose, CM shall refund the purchase price paid to CM in exchange for the return of the sold good(s). Said refund shall be the maximum liability of CM. THIS REMEDY IS THE SOLE AND EXCLUSIVE REMEDY OF THE BUYER OR THEIR PURCHASER AGAINST CM FOR BREACH OF CONTRACT, FOR THE BREACH OF ANY WARRANTY OR FOR CM’S NEGLIGENCE OR IN STRICT LIABILITY. LIMITATION OF LIABILITY CM shall have no liability for any damages if CM’s performance is delayed for any reason or is prevented to any extent by any event such as, but not limited to: any war, civil unrest, government restrictions or restraints, strikes or work stoppages, fire, flood, accident, shortages of transportation, fuel, material, or labor, acts of God or any other reason beyond the sole control of CM. CM EXPRESSLY DISCLAIMS AND EXCLUDES ANY LIABIL- ITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGE IN CONTRACT, FOR BREACH OF ANY EXPRESS OR IMPLIED WARRANTY, OR IN TORT, WHETHER FOR CM’s NEGLIGENCE OR AS STRICT LIABILITY.
OBTAINING WARRANTY PERFORMANCE
Normally, the contractor or service organization who installed the products will provide warranty performance for the owner. Should the installer be unavailable, contact any CM recognized dealer, contractor or service organiza- tion. If assistance is required in obtaining warranty performance, write or call:
Climate Master, Inc. • Customer Service • 7300 S.W. 44th Street • Oklahoma City, Oklahoma 73179 [phone]
NOTE: Some states or Canadian provinces do not allow limitations on how long an implied warranty lasts, or the limitation or exclusions of consequential or incidental damages, so the foregoing exclusions and limitations may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state and from Canadian province to Canadian province.
Please refer to the CM Installation, Operation and Maintenance Manual for operating and maintenance instructions.
*LC083*
Rev.: 11/09 LC083

THE SMART SOLUTION FOR ENERGY EFFICIENCY
O (ERV) Series
Rev.: 04 April, 2014
15
climatemaster.com
Notes

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
O (ERV) Series
Rev.: 04 April, 2014
16 ClimateMaster Water-Source Heat Pumps
Revision History
*97B0042N06*
97B0042N06
ClimateMaster works continually to improve its products. As a result, the design and specifications of each product at the time of order may be
changed without notice and may not be as described herein. Please contact ClimateMaster’s Customer Service Department at 1-405-745-6000 for
specific information on the current design and specifications. Statements and other information contained herein are not express warranties and
do not form the basis of any bargain between the parties, but are merely ClimateMaster’s opinion or commendation of its products. For the latest
version of this document go to climatemaster.com.
ClimateMaster is a proud supporter of the Geothermal Exchange Organization - GEO. For more information visit geoexchange.org.
© ClimateMaster, Inc. 2013
7300 S.W. 44th Street
Oklahoma City, OK 73179
Phone: [phone]
Fax: [phone]
climatemaster.com
Date: Item: Action:
04/04/14 Logos - page 1 & 16 Updated
11/21/13 Created