York Maxa Mier Erv Technical Guide

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903106-UTG-A-0912

MAXA-MI$ER®
TECHNICAL GUIDE
V* Series
Unitized Energy Recovery
Ventilators

ERV Unit with 3 - 12.5 Ton Packaged Unit

DESCRIPTION
•

Reduces cooling load at design temperatures up to 4 tons per
1000 cfm of outside air.

•

Reduces heating load up to 2.5 Tons Btuh per 1000 CFM of outside air.

•

Dry energy transfer. Moisture in supply (intake) air stream is
transferred to exhaust air stream in a vapor state, eliminating
condensate plumbing from the UERV.

•

Attaches directly to the UPG rooftop units. All mounting equipment is provided.

•

Separate fused power supply. (Except VR74 or VR122)

•

Filters / mist eliminators are provided on the entering air openings.

•

Adjustable support legs are provided. (Except for Stand Alone)

•

Two modes of operation (Pivoting Wheel Models only)
•

Recovery mode during normal energy recovery operation.

•

True economizer mode when outside sensor calls for
economizer operation (3 - 12.5 ton packaged units
equipped with economizers). U. S. Patent 5,548,970.

•

Pivoting wheel models used with packaged unit with economizer. Sequence of operation controlled by economizer controller. (3- 12.5 Ton Only)

•

Balancing dampers provided on VR Modules. (Except VR74
and VR122)

•

Centrifugal blowers (both intake and exhaust for high static
capability and low sound levels). (Except VR74 and VR122)

•

Heavy gauge galvanized steel cabinets corrosion protected with
powder paint process that match UPG units.

•

Fully insulated cabinet.

•

AHRI certified internal enthalpy wheel is provided.

•

Internal enthalpy wheel made of polymeric material with silica
gel impregnated into the material. The enthalpy wheel has a
five year limited warranty.

•

Internal enthalpy wheels are easily cleanable. Large wheels (25
inch diameter and above) are split into easily removable pie
segments. Smaller wheels can be removed from the ERV.

•

Continuous operation down to 10 ºF (-12 ºC) without defrost at
indoor relative humidity up to 40%. For temperatures below 10
ºF (-12 ºC), Optional Low Ambient Control Kit is required. Kit
includes temperature sensor to control the ERV before frost
build up can occur on recovery wheel.

ERV Unit with 15 - 25 Ton Packaged Unit

Note: MAXA-MI$ER® UERV’s are designed for use with
rooftops using 14” high or greater roof curbs.
Note: ZF/ZH/ZJ/XP 037 thru 150 or ZS/ZU/ZW/XA-A3
thru -12, with ERV must use “slab” type economizers and downflow position.

ERV Unit with 25 -40 Packaged Unit

ETL Certified per UL 1995 and CSA 22.2

Energy recovery COMPONENT rated in
accordance with AHRI/ANSI Standard
1060-2005 and certified to AHRI. Actual
performance in packaged equipment
may vary.

FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE

903106-UTG-A-0912

TABLE OF CONTENTS
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . 2
UPG UERV MODEL NOMENCLATURE . . . . . . . . . . . . 3
APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
PRINCIPLE OF OPERATION . . . . . . . . . . . . . . . . . . . . . 4
AHRI/ANSI STANDARD 1060-2005 FOR AIR-TO-AIR ENERGY RECOVERY VENTILATION EQUIPMENT . . . . . 4
ENERGY RECOVERY WHEEL . . . . . . . . . . . . . . . . . . . . 4
CROSS LEAKAGE IN UERV’S (PURGE SECTORS) . . . 5

OPTIONAL ACCESSORIES - FIELD INSTALLED . . . . 5
OPTIONAL ACCESSORIES - FACTORY INSTALLED 6
HOW TO SELECT THE PROPER AIR
CONDITIONING UNIT AND UNITARY ENERGY RECOVERY VENTILATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

UPG UERV STAND ALONE MODEL
NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
PERFORMANCE - ERV SERIES . . . . . . . . . . . . . . . . . 22
SERVICE CLEARANCES - STAND ALONE SERIES
ERVS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

LIST OF FIGURES
Fig. #

D SERIES STAND ALONE ERV'S FOR DOWN DISCHARGE DUCT ARRANGEMENTS . . . . . . . . . . . . . . 31
FEATURES AND NOTES . . . . . . . . . . . . . . . . . . . . . . . 31

S SERIES STAND ALONE ERV'S FOR SIDE BY SIDE
DUCT ARRANGEMENTS . . . . . . . . . . . . . . . . . . . . . . 36
FEATURES AND NOTES . . . . . . . . . . . . . . . . . . . . . . . 36

O SERIES STAND ALONE ERV'S FOR OVER AND UNDER DUCT ARRANGEMENTS . . . . . . . . . . . . . . . . . . 40
FEATURES AND NOTES . . . . . . . . . . . . . . . . . . . . . . . 40

GUIDE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . 44
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

SEQUENCE OF OPERATION: . . . . . . . . . . . . . . . . . . 45
UERV TROUBLESHOOTING GUIDE . . . . . . . . . . . . . 46
UERV BELOW 600 CFM WITH STATIONARY WHEEL
(NO ECONOMIZER) . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
UERV ABOVE 600 CFM WITH STATIONARY WHEEL
(NO ECONOMIZER) . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
UERV ABOVE 600 CFM WITH PIVOTING WHEEL (USED
WITH ECONOMIZER) . . . . . . . . . . . . . . . . . . . . . . . . . . 47

13 SPECIFICATIONS AND ELECTRICAL DATA - 600
THROUGH 1700 CFM ERV’S . . . . . . . . . . . . . . . . . . . 12
Pg. #

14 SPECIFICATIONS AND ELECTRICAL DATA - 1500
THROUGH 2800 CFM ERV’S . . . . . . . . . . . . . . . . . . . 13

1

UNITIZED ENERGY RECOVERY
VENTILATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2

ENERGY RECOVERY WHEEL . . . . . . . . . . . . . . . . . . 4

15 SPECIFICATIONS AND ELECTRICAL DATA - 2800
THROUGH 3600 CFM ERV’S . . . . . . . . . . . . . . . . . . . 14

3

“P” SERIES PIVOTING WHEEL FOR UNITS W/ECONOMIZERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

16 SPECIFICATIONS AND ELECTRICAL DATA - 3400
THROUGH 5600 CFM ERV’S . . . . . . . . . . . . . . . . . . . 15

4

UERV DIMENSIONAL DATA - 036 THROUGH 060 . 18

5

UERV DIMENSIONAL DATA - 037 THROUGH 150 (3 12 1/2 TONS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

17 SPECIFICATIONS AND ELECTRICAL DATA - 5500
THROUGH 6200 CFM ERV’S . . . . . . . . . . . . . . . . . . . 16

6
7

UERV DIMENSIONAL DATA - 180 THROUGH 300 (15 25 TONS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
MODEL UNIT VR074 AND VR122 (25 - 40 TON) . . . 20

Pg. #

8

UERV OUTSIDE AIR CFM SELECTION BY CFM . . . . 5

9

PERFORMANCE - 3 THROUGH 12 1/2 TON UNITS . . 7

10 PERFORMANCE - 15 THROUGH 25 TON UNITS . . . . 8
11 PERFORMANCE - PIVOTING WHEEL MODELS . . . . 9
12 SPECIFICATIONS AND ELECTRICAL DATA - 300
THROUGH 550 CFM ERV’S 11
2

19 BLOWER PERFORMANCE CHART - VR074 . . . . . . 21
20 BLOWER PERFORMANCE CHART - VR122 . . . . . . 21
21 FILTER SIZES - STAND ALONE ERV SERIES . . . . . 23

LIST OF TABLES
Tbl. #

18 SPECIFICATIONS AND ELECTRICAL DATA - 6000
THROUGH 13000 CFM UERV’S . . . . . . . . . . . . . . . . 17

22 SPECIFICATIONS AND ELECTRICAL DATA - 300
THROUGH 1100 CFM ERV'S . . . . . . . . . . . . . . . . . . . 24
23 SPECIFICATIONS AND ELECTRICAL DATA - 1200
THROUGH 2000 CFM ERV'S . . . . . . . . . . . . . . . . . . . 25
24 SPECIFICATIONS AND ELECTRICAL DATA - 1200
THROUGH 2800 CFM ERV'S . . . . . . . . . . . . . . . . . . . 26
25 SPECIFICATIONS AND ELECTRICAL DATA - 2000
THROUGH 3600 CFM ERV'S . . . . . . . . . . . . . . . . . . . 27

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LIST OF TABLES (CONT.)
Tbl. #

32 AIRFLOW PERFORMANCE - DOWNFLOW CONFIGURATION FOR D080 & D120 . . . . . . . . . . . . . . . . . . . . 35
Pg. #

26 SPECIFICATIONS AND ELECTRICAL DATA - 3000
THROUGH 4600 CFM ERV'S . . . . . . . . . . . . . . . . . . . 28
27 SPECIFICATIONS AND ELECTRICAL DATA - 4600
THROUGH 6200 CFM ERV'S . . . . . . . . . . . . . . . . . . . 29
28 SPECIFICATIONS AND ELECTRICAL DATA - 6000
THROUGH 13000 CFM ERV'S . . . . . . . . . . . . . . . . . . 30
29 AIRFLOW PERFORMANCE - DOWNFLOW CONFIGURATION FOR D11 & D20 . . . . . . . . . . . . . . . . . . . . . . 32
30 AIRFLOW PERFORMANCE - DOWNFLOW CONFIGURATION FOR D028 & D036 . . . . . . . . . . . . . . . . . . . . 33
31 AIRFLOW PERFORMANCE - DOWNFLOW CONFIGURATION FOR D046 & D062 . . . . . . . . . . . . . . . . . . . . 34

33 AIRFLOW PERFORMANCE - SIDE BY SIDE DUCT
CONFIGURATION FOR S011 & S020 . . . . . . . . . . . . 37
34 AIRFLOW PERFORMANCE - SIDE BY SIDE DUCT
CONFIGURATION FOR S028 & S036 . . . . . . . . . . . . 38
35 AIRFLOW PERFORMANCE - SIDE BY SIDE DUCT
CONFIGURATION FOR S046 & S062 . . . . . . . . . . . . 39
36 AIRFLOW PERFORMANCE - DOWNFLOW CONFIGURATION FOR O011 & O020 . . . . . . . . . . . . . . . . . . . . 41
37 AIRFLOW PERFORMANCE - DOWNFLOW CONFIGURATION FOR 0028 & O036 . . . . . . . . . . . . . . . . . . . . 42
38 AIRFLOW PERFORMANCE - DOWNFLOW CONFIGURATION FOR O46 & O62 . . . . . . . . . . . . . . . . . . . . . . 43

UPG UERV MODEL NOMENCLATURE

UPG UERV Model Nomenclature
V R 028 A12 H 4 A L2 1
Product Generation
Product Category

1 = First Generation

V = Ventilator

Additional Options
Wheel Type

Voltage

R = Rooftop Stationary
P = Rooftop Pivoting (036-060 & 078-150 only)

CFM*
006 = 300 to 550
011 = 600 to 1000
020 = 1100 to 1700
028 = 2200 to 2800** 1500 to 2200**
036 = 2800 to 3600
046 = 3400 to 4600
062 = 5500 to 6200** 4800 to 5600**
074 = 6000 to 8000
122 = 8000 to 13000

2= 208/230v-3ph
4= 460v-3ph
5= 575v-3ph
9= 208/320v-1ph

AA = No Options Installed
L1 = Low Ambient Kit (LAK)*
L2 = LAK & Motorized Outside Air (MOA)*
L3 = LAK, MOA & Stop-Start-Job (SSJ) (not used on P models)*
L4 = LAK, MOA, SSJ & Pressure Sensor (PS) (not used on P)
L5 = LAK & SSJ (not used on P models)*
L6 = LAK, SSJ & PS (not used on P models)
L7 = LAK & PS
L8 = LAK, MOA and PS
M1 = Motorized Outside Air (MOA)*
M2 = MOA, and Stop Start-Jog (SSJ) (not used on P models)*
M3 = MOA, SSJ and Pressure Sensor (PS) (not used on P models)
M4 = MOA and PS
S1 = Stop-Start-Job (SSJ) (not used on P models)*
S2 = SSJ and Pressure Sensor (PS) (not used on P models)
P1 = Pressure Sensor (PS)

UPG Rooftop Cabinet
A06 = ZF/ZR/XP036-072 & ZS/ZK/XA -03 Thru -A6
A12 = 50” Models ZF/ZH/ZR/XP 102-150, ZJ078-150 &
ZS/ZU/ZK/XA -08 Thru -12, ZW-06 Thru -12
B12 = 42” Models ZF/ZR/XP078-090, ZH037-090, ZJ/ZR037-061
ZS/ZK/XA -06 Thru -07, ZU-A3 Thru-07, ZW/ZK-A3 Thru -A5
A15 = Models ZF180 & ZS-15
A25 = Models ZF210-300, ZJ180-300, XP180-240 & ZS-18 Thru -25,
ZW-15 Thru -25, XA-15, -20
A40 = Models Z42, Z33, Z34 & X42, X33, X34 25-40 Tons

Duct Type
A = No Selection on Rooftop Units

* CFM is ERV wheel rating. This may vary depending on unit cabinet pressure drop.
** These CFM ranges are dependant upon blower motor selection.

Blower Speed
H = High Speed**
M = Medium Speed**
V = Variable Speed
L = Constant Volume

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APPLICATIONS

Critical Terms for Standard 1060 are as follows:

Unitized Energy Recovery Ventilators (UERV) are used with
the UPG rooftop packaged units. The internal wheel provides
sensible and latent energy exchange between the entering
and exhaust air streams of a building. This allows a substantial amount of the energy, which is normally lost in the
exhaust air stream to be returned into the entering air. Ideal
applications are areas that have cold or hot temperatures, or
areas that have high humidity or very low humidity (recover
exhaust air from buildings that have humidifiers to add
humidity). Application software is available to provide the
energy and dollar savings for all areas of the United States
and Canada.

1.

Effectiveness. The measured energy recovery effectiveness not adjusted to account for that portion of the
psychrometric change in the leaving supply air (Station
2) that is the result of leakage of entering exhaust air
(Station 3) rather than exchange of heat or moisture
between the air streams.

2.

Net Effectiveness. The measured recovery effectiveness adjusted to account for that portion of the psychometric change in the leaving supply air (Station 2) that is
the result of leakage of the entering exhaust air (Station
3) rather than exchange of heat or moisture between the
air streams.

3.

Exhaust Air Transfer Ratio (EATR). The tracer gas
concentration difference between the leaving supply air
(Station 2) and entering supply (outdoor) air stream (Station 1) divided by the tracer gas concentration in the
entering exhaust (return) air (Station 3) at the 100%
rated air-flow, expressed as a percentage.

4.

Outdoor Air Correction Factor (OACF). The entering
supply (outdoor) airflow (Station 1) divided by the measured (gross) leaving supply airflow (Station 2).

PRINCIPLE OF OPERATION
The UERV enthalpy wheel contains parallel layers of a polymeric material that are impregnated with silica gel (desiccant). The wheel is located in the entering (intake) air and
exhaust air streams of the ventilation equipment. As the
wheel rotates through each air stream, the wheel surface
adsorbs sensible and latent energy. In the heating mode, the
wheel rotates to provide a constant transfer of heat from the
exhaust air stream to the colder intake air stream. During the
cooling season, the process is reversed. On units equipped
with an economizer (3 - 12.5 tons), the wheel pivots out of the
air stream to allow economizer to operate normally for "free
cooling" when outdoor temperature and humidity is acceptable. During economizer operation, the UERV exhaust
blower continues to run, providing power exhaust for the system. The intake blower is de-energized during economizer
operation.

AHRI/ANSI STANDARD 1060-2005 FOR AIR-TO-AIR
ENERGY RECOVERY VENTILATION EQUIPMENT
The Air-Conditioning, Heating and Refrigeration Institute
(AHRI) issued Standard 1060-2005 to certify air-to-air energy
recovery ventilators. This standard deals specifically with the
ratings of the Energy Recovery Wheel that is incorporated
into the Energy Recovery Ventilator (ERV). All of the UPG
ERV's have an AHRI certified energy recovery wheel. The
data shown in the specification charts is the AHRI certified
ratings for the wheel. Actual performance in the ERV may
vary.

ENERGY RECOVERY WHEEL
The heart of the Energy Recovery Ventilator is the Energy
Recovery Wheel (defined by AHRI as a rotary heat
exchanger). The wheel has a patented design of parallel layers of wrapped polymeric material that is impregnated with a
silica gel (desiccant). This unique design makes it the only
truly cleanable wheel on the market today. The small wheels
(30 inch diameter and smaller) are slide out cassettes, and
the larger wheels have pie segments that are removable for
cleaning.








	




FIGURE 2 - ENERGY RECOVERY WHEEL

FIGURE 1 - UNITIZED ENERGY RECOVERY
VENTILATOR
4

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CROSS LEAKAGE IN UERV’S (PURGE SECTORS)
The issue of cross leakage in rotary wheel based UERV's
used in space conditioning applications is often misunderstood. As a result, many systems are installed with purge
sectors and the additional fan capacity required to allow
these sectors to function when in fact they are unnecessary.
A better understanding of the rational for the purge sector,
and its history, allows us to dispense with the purge sector, its
added first cost and continuing cost of operation.
A purge sector minimizes the carry over cross leakage from
the exhaust into the supply (outside air) air stream by shunting a portion of the supply air back into the exhaust air stream
across the seal separating the exhaust and supply. This is
required in industrial applications where the exhaust carries
contaminants. This typically results in air volume being 15%

to 20% higher to get the desired air intake, and the cost associated with it.
In space conditioning applications, where the ventilation is
operating to maintain acceptable indoor air quality, there are
no contaminants in concentrations large enough to cause
concern. Cross leakage in the UERV system results in a
small amount of the exhaust air, typically less than 5% in balanced airflow, returning to the space. This is not contaminated air, as some would suggest. It is however air that
effectively never left the space. The operation cost of moving
this air is far less than that required for a purge sector. Do not
use the UPG UERV's in applications that have concentrations
of contaminants.

TABLE 1: UERV OUTSIDE AIR CFM SELECTION BY CFM
Unit-Tons

300-550 600-1000
1.5 - 6

1.5 - 6
7.5 - 12.5

1100-1700

1500-2800

2800-3600

3400-4600

4800-5600

5500-6200

6000-8000

8000-13000

25 - 40

30 - 40

Stand Alone type ERV’s are available for all tonnage sizes.
7.5 - 12.5

7.5 - 12.5

Rooftop
15 - 25

15 - 25

15 - 25

15 - 25

15 - 25

Stand Alone ERV’s are available for equipment room applications.

OPTIONAL ACCESSORIES - FIELD
INSTALLED

match the specified unit. See specification pages for required
curb. Must be ordered separately from UERV.

UERV Equipment Support - 8 inch (203 mm) high base for
support of the exhaust and intake end of the UERV. Must be
ordered separately from the UERV.

Stand Alone Balancing Damper - Balancing dampers are
used with VO and VS models when ERV is connected to the
rooftop unit, not to ductwork on the roof.

UERV
VR006
VR/P011
VR/P020
VR/P028

UERV
VR036
VR046
VR062
VR074
VR122

Equipment Support
Part No.
1ES0401
1ES0402
1ES0402
1ES0402
Equipment Support
Part No.
1ES0403
1ES0403
1ES0404

Roof Curb - A 14 or 24 inch (355 or 610 mm) roof curb is
required to match supply and exhaust openings of the UERV
with the rooftop units. UPG provides a full line of roof curbs to

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OPTIONAL ACCESSORIES - FACTORY
INSTALLED

L6 - LAK, SSJ, and PS
L7 - LAK and PS
L8 - LAK, MOA, and PS

Low Ambient Control Kit - Prevents frost formation on
energy wheel heat transfer surfaces by terminating the intake
blower operation when discharge air temperature falls below
a field selectable temperature setting. Intake blower operation resumes operation after temperature rises above the
adjustable temperature differential.
Pressure Sensor - Measurement device on the UERV to
determine airflow across the Wheel.

M1 - Motorized Outside Air (MOA) *
M2 - MOA and Stop-Start-Jog (SSJ) *
M3 - MOA, SSJ, and Pressure Sensor (PS)
M4 - MOA and PS
S1 - Stop-Start-Jog (SSJ) *
S2 - SSJ and Pressure Sensor (PS)
P1 - Pressure Sensor (PS)
NOTE:

Motorized Intake Air Damper - Damper mounts in the outdoor air intake hood. It opens when the UERV is energized
and closes when de-energized.
Stop-Start-Jog - Function that rotates the Enthalpy Wheel
(non-pivoting models) on a preset timer to prevent contamination of the wheel during economizer operation.

* denotes only options available for VR074 & VR122.

HOW TO SELECT THE PROPER AIR
CONDITIONING UNIT AND UNITARY ENERGY
RECOVERY VENTILATOR
1.

Determine the air conditioning load requirements with
the required amount of outside air without an UERV.

ERV Option Codes (ex.: VR028A12H4AL3 would be an R28
series high speed 460 volt UERV with a Low Ambient kit,
Motorized Outside Air, and Stop-Start-Jog kit.)

2.

Select the proper UERV for the outside air CFM requirements and calculate the tonnage reduction through the
UST or UERV software programs.

L1 - Low Ambient Kit (LAK) *

3.

Select the air conditioning unit required by reducing the
load determined in step 1 by the reduction in step 2.
(Example: If the load in Step 1 was 10 tons, and the
reduction in Step 2 was 2.5 tons, select a 7.5 ton unit.)

4.

Select the proper UERV based on the selected unit. SEE
Page 3 UERV Nomenclature for Details

L2 - LAK & Motorized. Outside Air (MOA) *
L3 - LAK, MOA, & Stop-Start-Jog (SSJ) *
L4 - LAK, MOA, SSJ, & Pressure Sensor (PS)
L5 - LAK and SSJ *

6

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TABLE 2: PERFORMANCE - 3 THROUGH 12 1/2 TON UNITS
“R” Series Stationary Wheel for Units without Economizers
UPG
Unit Size
Packaged Unit
(Tons)
Model No.

ZF036-072
ZR036-060
XP036-060
ZS-03-A6
ZK-03-05
XP-03-05

(42”)
ZH037-090
ZF078-090
ZJ037-061
ZR037-090
ZU-A3-07
ZS-06-07
ZW-A3-A5
ZK-A3-07

(50”)
ZF102-150
ZH102-150
ZJ078-150
XP102-150
ZR102-150
ZS-08-12
ZU-08-12
ZW-06-12
XA-08-12
ZK-08-12

Nominal AHRI Data (Total
ERV CFM
Range

300-550

Matching ERV
Model

VR006A06H

3-6
600-1000

300-550

3 - 7.5

600-1000

1100-1700

600-1000

1100-1700

VR011A06H

VR006B06H

VR011B12H

VR020B12H

VR011A12H

VR020A12H

6.5 - 12.5
1500-2200

2200-2800

VR028A12M

VR028A12H

Voltage &
Phase

Voltage
Code

110v-1ph

1

208/230v-1ph

9

208/240v-3ph

2

460v-3ph

4

208/230v-1ph

9

208/230v-3ph

2

460v-3ph

4

575v-3ph

5

208/230v-3ph

2

460v-3ph

4

575v-3ph

5

208/230v-3ph

2

460v-3ph

4

575v-3ph

5

208/230v-3ph

2

460v-3ph

4

575v-3ph

5

208/230v-3ph

2

460v-3ph

4

575v-3ph

5

208/230v-3ph

2

460v-3ph

4

575v-3ph

5

208/230v-3ph

2

460v-3ph

4

575v-3ph

5

208/230v-3ph

2

460v-3ph

4

575v-3ph

5

CFM

Net Effectiveness
Heating

Cooling

500

65%

64%

900

73%

72%

500

65%

64%

900

73%

72%

1600

65%

64%

900

73%

72%

1600

65%

64%

1950

71%

70%

2600

65%

63%

Note 1: Complete UPG ERV model number includes the electrical information. Example ZF 060
needing 500 CFM outside of air at 230 volts/3 phase. Model would be a VR006A06H2AAA1.

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TABLE 3: PERFORMANCE - 15 THROUGH 25 TON UNITS
Use this table to determine ventilation and size requirements. Table shows UPG packaged units and matching ERV model,
Air Flow Range, and AHRI rated Net Effectiveness at 100% of rated CFM.
“R” Series Stationary Wheel for Units without Economizers
Nominal AHRI Data (Total
UPG
Unit
ERV CFM Matching ERV
Voltage &
Voltage
Packaged Unit
Size
Net Effectiveness
Range
Model
Phase
Code
CFM
Model No.
(Tons)
Heating
Cooling
208/230v-3ph
2
1500-2200
VR028A25H
460v-3ph
4
1950
71%
70%
575v-3ph
5
208/230v-3ph
2
2200-2800
VR028A25H
460v-3ph
4
2600
65%
63%
575v-3ph
5
ZF180
208/230v-3ph
2
ZJ180
2800-3600
VR036A15H
460v-3ph
4
3100
65%
63%
ZR180
575v-3ph
5
XP180
15
ZS-15
208/230v-3ph
2
ZW-15
3400-4600
VR046A15H
460v-3ph
4
3900
65%
63%
ZK-15
575v-3ph
5
XA-15
208/230v-3ph
2
4800-5600 VR062A25M
460v-3ph
4
4125
71%
70%
575v-3ph
5
208/230v-3ph
2
5500-6200
VR062A25H
460v-3ph
4
5500
65%
63%
575v-3ph
5
208/230v-3ph
2
2200-2800
VR028A25H
460v-3ph
4
2600
65%
63%
575v-3ph
5
208/230v-3ph
2
2800-3600
VR036A25H
460v-3ph
4
3100
65%
63%
ZJ210-300
ZR240-300
575v-3ph
5
ZF210-300
208/230v-3ph
2
XP240
VR046A25H
460v-3ph
4
3900
65%
63%
17.5 - 25 3400-4600
ZW-18-25
575v-3ph
5
ZK-20-25
208/230v-3ph
2
ZF-18-25
XA-20
4800-5600 VR062A25M
460v-3ph
4
4125
71%
70%
575v-3ph
5
208/230v-3ph
4
5500-6200
VR062A25H
460v-3ph
5
5500
65%
63%
575v-3ph
2
208/230v-3ph
2
Z42
6000-8000
VR074A40*
460v-3ph
4
6600
65%
63%
Z33
575v-3ph
5
Z34
25-40
X42
208/230v-3ph
2
X33
8000-13000 VR122A40*
460v-3ph
4
10800
65%
63%
X34
575v-3ph
5

8

Note 1:

Complete UPG ERV model number includes the electrical information. Example: ZJ180 needing 2800 CFM
outside of air at 230 volts/3 phase. Model would be a VR028A15H2AAA1.

Note 2:

For VR074 and VR122 units used with an economizer must have the Start-Stop-Jog (SSJ) option.

Unitary Products Group

903106-UTG-A-0912

TABLE 4: PERFORMANCE - PIVOTING WHEEL MODELS
“P” Series Pivoting Wheel for Units with Economizers
UPG
Packaged Unit
Model No.
ZF036-072
ZR036-060
XP036-060
ZS-03-A6
ZK-03-05
XA-03-05
(42”)
ZH037-090
ZF078-090
ZJ037-061
ZR037-090
XP078-090
ZU-A3-07
ZS-06-07
ZW-A3-A5
ZK-A3-07
XA-06-07

Unit
Size
(Tons)

3-6

ERV
CFM
Range

6001000

6001000

Max.
CFM
Power
Exhaust

1900

1900

Matching
ERV
Model

VP011A06H

VP011B12H

3 - 7.5
11001700

6001000
(50”)
ZF102-150
ZH102-150
ZJ078-150
ZR102-150
XP102-150
ZS-08-12
ZU-08-12
ZW-06-12
ZK-08-12
XA-08-12

11001700

3000

1900

3000

22002800

3450

4200

Voltage
Code

208/230v-1ph

9

208/240v-3ph

2

460v-3ph

4

575v-3ph

5

208/230v-3ph

2

460v-3ph

4

575v-3ph

5

208/230v-3ph

2

460v-3ph

4

VP020B12H

VP011A12H

VP020A12H

6.5 12.5
15002200

Nominal AHRI Data (Total
Voltage &
Phase

VP028A12M

VP028A12H

575v-3ph

5

208/230v-3ph

2

460v-3ph

4

575v-3ph

5

208/230v-3ph

2

460v-3ph

4

575v-3ph

5

208/230v-3ph

2

460v-3ph

4

575v-3ph

5

208/230v-3ph

2

460v-3ph

4

575v-3ph

5

CFM

Net Effectiveness
Heating

Cooling

900

73%

72%

900

73%

72%

1600

65%

64%

900

73%

72%

1600

65%

64%

1950

71%

70%

2600

65%

63%

Note 1: Complete UPG ERV model number includes the electrical information. Example ZF 060
needing 800 CFM outside of air at 230 volts/3 phase. Model would be a VP011A06H2AAA1.
2: Models ZF/ZH/ZJ/XP* 037-150 & ZS/ZU/ZW/ZK/XA -A3-12 with ERV must use “slab” type economizers and downflow position.

Unitary Products Group

9

903106-UTG-A-0912

Enthalpy Wheel
Fresh Air Damper

Pivoted out of Intake and
Discharge Air Stream

(opens during economizer
operation)

Outside
Air Blower
(energized)

Exhaust
Air Blower
(energized)

Enthalpy Wheel
(with removable pie
segments)

Exhaust
Air Blower

Unit & UERV Disconnect
(provided correct wire size used
for both units and
local code approval)

FIGURE 3 - “P” SERIES PIVOTING WHEEL FOR UNITS W/ECONOMIZERS

10

Unitary Products Group

903106-UTG-A-0912

TABLE 5: SPECIFICATIONS AND ELECTRICAL DATA - 300 THROUGH 550 CFM ERV’S
Model Numbers
Line Voltage - 60hz
Motor - hp / type
Wheel Size (dia x width) - in
Motor Speed - rpm
Fresh Air
Motor Speed(s)
Blower
Bearing Type
Full Load Amps
Service Factor
Motor - hp
Wheel Size (dia x width) - in
Motor Speed - rpm
Exhaust Air
Motor Speed(s)
Blower
Bearing Type
Full Load Amps-Stationary
Service Factor
Potential Volts
Wheel
Electrical
Motor Speed (RPM)/Wheel (RPM)
Data
Full Load Amps
MCA
Total
Electrical
OCPD
Wheel Depth
Wheel
Wheel Diameter
Data
Construction / Media Type
Nominal Airflow CFM
EATR - -0.50 H2O
EATR - 0.00 H2O
Enthalpy
Wheel AHRI
EATR - +0.50 H2O
Rating Data
OACF - -0.50 H2O
OACF - 0.00 H2O
OACF - +0.50 H2O
Thermal Ratings @ 0” Pressure Diff.
100% Airflow Heating
75% Airflow Heating
Total
Effectiveness 100% Airflow Cooling
75% Airflow Cooling
100% Airflow Heating
75% Airflow Heating
Net
Effectiveness 100% Airflow Cooling
75% Airflow Cooling
Curb
A/C Unit Curb Height - in
Shipping Weight - lbs.
Weights
Net Weight - lbs.

VR006 - Rooftop Stationary
115v-1ph

Sensible
68%
73%
68%
73%
68%
73%
68%
73%

208/230v/460-1ph 208/230v/460-3ph
0.25 / PSC
5.5 x 6.3
1780
2
Sleeve
3.8
1.1
0.25 / PSC
5.5 x 6.3
1780
2
Sleeve
3.8
1.1
115
1050/68
0.7
8.7
10
2
19.3
One Piece / Polymeric
500 @ .6
9.90%
0.20%
0.00%
1.02%
1.33
1.59%
Latent
60%
65%
60%
65%
60%
65%
60%
65%
14
198
155

Total
65%
70%
64%
69%
65%
70%
64%
69%

Note: 1: A stepdown transformer is provided to stepdown high
voltage primary to 115 volt secondary.

Unitary Products Group

11

903106-UTG-A-0912

TABLE 6: SPECIFICATIONS AND ELECTRICAL DATA - 600 THROUGH 1700 CFM ERV’S
VR011 - Rooftop Stationary
VP011 - Rooftop Pivoting

Model Numbers
Line Voltage - 60hz
Motor - hp / type
Wheel Size (dia x width) - in
Motor Speed - rpm
Fresh Air
Motor Speed(s)
Blower
Bearing Type
Full Load Amps
Service Factor
Motor - hp Stationary
Motor - hp Pivoting
Wheel Size (dia x width) - in
Exhaust Motor Speed - rpm
Air
Motor Speed(s)
Blower Bearing Type
Full Load Amps-Stationary
Full Load Amps-Pivoting
Service Factor
Potential Volts
Wheel
Motor Speed (RPM)/Wheel
Electrical
(RPM)
Data
Full Load Amps
MCA - Stationary
Total OCPD - Stationary
Electrical MCA - Pivoting
OCPD - Pivoting
Wheel Depth - in
Wheel
Diameter - in
Data
Construction / Media Type
Nominal Airflow CFM
EATR - -1.00 H2O
Enthalpy
EATR
- 0.00 H2O
Wheel
AHRI EATR - +1.00 H2O
Rating OACF - -1.00 H O
2
Data
OACF - 0.00 H2O
OACF - +1.00 H2O
Thermal Ratings @ 0” Pressure Diff.
100% Airflow Heating
Total
Effec- 75% Airflow Heating
tive100% Airflow Cooling
ness
75% Airflow Cooling
100% Airflow Heating
Net
Effec- 75% Airflow Heating
tive100% Airflow Cooling
ness
75% Airflow Cooling
Curb A/C Unit Curb Height - in
Shipping Weight - lbs.
Weights
Net Weight - lbs.

208/ 230v-1ph

3.4
3.4

VR020 - Rooftop Stationary
VP020 - Rooftop Pivoting

208/ 230v-3ph 460v- 1ph 460v-3ph
.5 / PSC
10 x 6 AT
1120 / 960 / 850
3
Sleeve
3.4
1
.5 / PSC
.5 / PSC
10 x 6 AT
1120 / 960 / 850
3
Sleeve
3.4
1.5
1.5
3.4
1.5
1.5
1
208 / 230

208/230v-3ph

460v-3ph 575v-3ph
1.0 / Belt
9x9
1725
Adjustable Sheave
Ball
3.8
1.9
1.4
1.15
1.0 / Belt
1.5 / Belt
9x9
1725
Adjustable Sheave
Ball
3.8
1.9
1.4
5.6
2.8
2.0
1.15
208 / 230

1050/56

8.25
10
8.25
10

Sensible
76%
81%
76%
81%
76%
81%
76%
81%

1050/46

0.3
8.25
4.4
10
6
8.25
4.4
10
6
3
25.3
Segmented / Polymeric
900 @ 1.0
9.30%
0.70%
0.00%
0.97%
1.19%
1.34%
Latent
68%
73%
68%
73%
68%
73%
68%
73%
14
318
245

4.4
6
4.4
6

Total
73%
78%
72%
76%
73%
78%
72%
76%

0.3
4.58
3.45
6
5
5.7
4.2
8
6
3
30.346
Segmented / Polymeric
1600 @ .95

8.85
12
11.1
15

Sensible
68%
72%
68%
72%
68%
72%
68%
72%

7.80%
0.40%
0.00%
0.97%
1.16%
1.29%
Latent
61%
67%
61%
67%
61%
67%
61%
67%
14
425
345

Total
65%
71%
64%
70%
65%
71%
64%
70%

Note: 1. Pivoting electrical data applies to VP models only.

12

Unitary Products Group

903106-UTG-A-0912

TABLE 7: SPECIFICATIONS AND ELECTRICAL DATA - 1500 THROUGH 2800 CFM ERV’S
* VR028 - Rooftop Stationary
* VP028 - Rooftop Pivoting

Model Numbers
Line Voltage - 60hz

208/230v-3ph
Motor - hp / type
Wheel Size (dia x width) - in
Motor Speed - rpm
Motor Speed(s)
Bearing Type
Full Load Amps
Service Factor
Motor - hp Stationary
Motor - hp Pivoting
Wheel Size (dia x width) - in
Motor Speed - rpm
Motor Speed(s)
Bearing Type
Full Load Amps-Stationary
Full Load Amps-Pivoting
Service Factor
Motor - hp (1 phase)
Potential Volts
Motor Speed (RPM)/Wheel (RPM)
Full Load Amps
MCA - Stationary
OCPD - Stationary
MCA - Pivoting
OCPD - Pivoting
Wheel Depth x Diameter - in
Construction / Media Type
Nominal Airflow CFM
EATR - -1.00 H2O

Fresh Air
Blower

Exhaust Air
Blower

Wheel
Electrical
Data

Total
Electrical
Wheel
Data

Enthalpy
Wheel AHRI
Rating Data

Total
Effectiveness

Net
Effectiveness
Curb
Weights

EATR - 0.00 H2O
EATR - +1.00 H2O
OACF - -1.00 H2O
OACF - 0.00 H2O
OACF - +1.00 H2O
Thermal Ratings @ 0” Pressure Diff.
100% Airflow Heating
75% Airflow Heating
100% Airflow Cooling
75% Airflow Cooling
100% Airflow Heating
75% Airflow Heating
100% Airflow Cooling
75% Airflow Cooling
A/C Unit Curb Height - in
Shipping Weight - lbs.
Net Weight - lbs.

5.6

5.6
9

13.2
20
17.5
25

Sensible
68%
74%
68%
74%
68%
74%
68%
74%

460v-3ph
575v-3ph
1.5 / Belt
10 x 10
1725
Adjustable Sheave
Ball
2.8
2
1.15
1.5 / Belt
3 / Belt
10 x 10
1725
Adjustable Sheave
Ball
2.8
2
4.4
3.6
1.15
0.17
200-208 / 230
825/58
0.6
6.9
5.1
10
7
8.9
7.1
12
10
3 x 37.759
Segmented Pies / Polymeric
2600 @ .95
6.10%
0.40%
0.00%
0.99%
1.13%
1.23%
Latent
60%
67%
60%
67%
60%
67%
60%
67%
14
470
395

Total
65%
71%
63%
70%
65%
71%
63%
70%

* Electric data is for (A12) ZH/ZF/ZJ 078-150 and XP 078-150 only.
** Electric data is for (A15 and A25) ZH/ZF/ZJ 180-300 and XP 180 and 240 only.
Note: Pivoting electrical data applies to VP models only.

Unitary Products Group

13

903106-UTG-A-0912

TABLE 8: SPECIFICATIONS AND ELECTRICAL DATA - 2800 THROUGH 3600 CFM ERV’S
Model Numbers
Line Voltage - 60hz

Fresh Air
Blower

Exhaust Air
Blower

Wheel
Electrical
Data
Total
Electrical
Wheel
Data

VR036 - Rooftop Stationary
208/230v-3ph

Motor - hp / type
Wheel Size (dia x width) - in
Motor Speed - rpm
Motor Speed(s)
Bearing Type
Full Load Amps
Service Factor
Motor - hp Stationary
Wheel Size (dia x width) - in
Motor Speed - rpm
Motor Speed(s)
Bearing Type
Full Load Amps-Stationary
Service Factor
Motor - hp (1 phase)
Potential Volts
Motor Speed (RPM)/Wheel (RPM)
Full Load Amps
MCA - Stationary
OCPD - Stationary
Wheel Depth x Diameter - in
Construction / Media Type
Nominal Airflow CFM
EATR - -1.00 H2O

EATR - 0.00 H2O
EATR - +1.00 H2O
OACF - -1.00 H2O
OACF - 0.00 H2O
OACF - +1.00 H2O
Thermal Ratings @ 0” Pressure Diff.
100% Airflow Heating
75% Airflow Heating
Total
Effectiveness
100% Airflow Cooling
75% Airflow Cooling
100% Airflow Heating
75% Airflow Heating
Net
Effectiveness
100% Airflow Cooling
75% Airflow Cooling
Curb
A/C Unit Curb Height - in
Shipping Weight - lbs.
Weights
Net Weight - lbs.

7.0

7.0

16.4
25

460v-3ph
575v-3ph
2 / Belt
12 x 9
1725
Adjustable Sheave
Ball
3.5
3.2
1.15
3 / Belt
12 x 9
1725
Adjustable Sheave
Ball
3.5
3.2
1.15
0.50
200-208 / 230
1725/64
1.2
8.6
6.6
12
9
3 x 41.825
Segmented Pies / Polymeric
3100 @ .9

Enthalpy
Wheel AHRI
Rating Data

14

Sensible
68%
74%
68%
74%
68%
74%
68%
74%

4.90%
1.30%
0.30%
0.99%
1.07%
1.12%
Latent
60%
67%
60%
67%
60%
67%
60%
67%
24 On A15 Or A25
571
475

Total
65%
71%
63%
70%
65%
71%
63%
70%

Unitary Products Group

903106-UTG-A-0912

TABLE 9: SPECIFICATIONS AND ELECTRICAL DATA - 3400 THROUGH 5600 CFM ERV’S
Model Numbers
Line Voltage - 60hz
Motor - hp / type
Wheel Size (dia x width) - in
Motor Speed - rpm
Motor Speed(s)
Bearing Type
Full Load Amps
Service Factor
Motor - hp Stationary
Wheel Size (dia x width) - in
Motor Speed - rpm
Motor Speed(s)
Bearing Type
Full Load Amps-Stationary
Service Factor
Motor - hp (1 phase)
Potential Volts
Motor Speed (RPM)/Wheel (RPM)
Full Load Amps
MCA - Stationary
OCPD - Stationary
Wheel Depth x Diameter - in
Construction / Media Type
Nominal Airflow CFM
EATR - -1.00 H2O

Fresh Air
Blower

Exhaust Air
Blower

Wheel
Electrical
Data
Total
Electrical
Wheel
Data

Enthalpy
Wheel AHRI
Rating Data

Total
Effectiveness

Net
Effectiveness
Curb
Weights

VR046 - Rooftop Stationary
208/230v-3ph

EATR - 0.00 H2O
EATR - +1.00 H2O
OACF - -1.00 H2O
OACF - 0.00 H2O
OACF - +1.00 H2O
Thermal Ratings @ 0” Pressure Diff.
100% Airflow Heating
75% Airflow Heating
100% Airflow Cooling
75% Airflow Cooling
100% Airflow Heating
75% Airflow Heating
100% Airflow Cooling
75% Airflow Cooling
A/C Unit Curb Height - in
Shipping Weight - lbs.
Net Weight - lbs.

Unitary Products Group

9.4

9

22
30

Sensible
68%
73%
68%
73%
68%
73%
68%
73%

460v-3ph
575v-3ph
3 / Belt
12 x 12
1725
Adjustable Sheave
Ball
4.3
3.4
1.15
3 / Belt
12 x 12
1725
Adjustable Sheave
Ball
4.4
3.6
1.15
0.5
200-208 / 230
1075/57
1.2
11
9.1
15
12
3 x 46.776
Segmented Pies / Polymeric
3900 @ .95
4.40%
1.10%
0.20%
0.99%
1.06%
1.11%
Latent
60%
67%
60%
67%
60%
67%
60%
67%
24 On A15 Or A25
920
805

Total
65%
71%
63%
70%
65%
71%
63%
70%

15

903106-UTG-A-0912

TABLE 10: SPECIFICATIONS AND ELECTRICAL DATA - 5500 THROUGH 6200 CFM ERV’S
Model Numbers
Line Voltage - 60hz

Fresh Air
Blower

Exhaust Air
Blower

Wheel
Electrical
Data
Total
Electrical
Wheel
Data

Motor - hp / type
Wheel Size (dia x width) - in
Motor Speed - rpm
Motor Speed(s)
Bearing Type
Full Load Amps
Service Factor
Motor - hp Stationary
Wheel Size (dia x width) - in
Motor Speed - rpm
Motor Speed(s)
Bearing Type
Full Load Amps-Stationary
Service Factor
Motor - hp (1 phase)
Potential Volts
Motor Speed (RPM)/Wheel (RPM)
Full Load Amps
MCA - Stationary
OCPD - Stationary
Wheel Depth x Diameter - in
Construction / Media Type
Nominal Airflow CFM
EATR - -1.00 H2O

EATR - 0.00 H2O
Enthalpy
Wheel AHRI
EATR - +1.00 H2O
Rating Data
OACF - -1.00 H2O
OACF - 0.00 H2O
OACF - +1.00 H2O
Thermal Ratings @ 0” Pressure Diff.
100% Airflow Heating
75% Airflow Heating
Total
Effectiveness
100% Airflow Cooling
75% Airflow Cooling
100% Airflow Heating
75% Airflow Heating
Net
Effectiveness
100% Airflow Cooling
75% Airflow Cooling
Curb
A/C Unit Curb Height - in
Shipping Weight - lbs.
Weights
Net Weight - lbs.

16

VR062 - Rooftop Stationary
208/230v-3ph

460v-3ph
575v-3ph
5 / Belt
12 x 12
1725
Adjustable Sheave
Ball
15
7.4
5.8
1.15
5 / Belt
12 x 12
1725
Adjustable Sheave
Ball
14.8
7
5.1
1.15
0.5
200-208 / 230
1075/54
1.2
34.8
17.5
13.6
40
25
20
3 x 52.026
Segmented Pies / Polymeric
5500 @ .95

Sensible
68%
73%
68%
73%
68%
73%
68%
73%

4.00%
1.00%
0.20%
0.99%
1.06%
1.10%
Latent
60%
67%
60%
67%
60%
67%
60%
67%
24 On A15 Or A25
1250
1075

Total
65%
71%
63%
70%
65%
71%
63%
70%

Unitary Products Group

903106-UTG-A-0912

TABLE 11: SPECIFICATIONS AND ELECTRICAL DATA - 6000 THROUGH 13000 CFM UERV’S
UERV Series
Line Voltage - 60hz
Motor - hp
Wheel Size (dia x width) - in
Motor Speed - rpm
Exhaust Air Motor Speed(s)
Blower
Bearing Type
Full Load Amps
OCPD
Service Factor
Motor - hp (3 phase)
Motor Speed (RPM)/Wheel
Wheel
Electrical (RPM)
Data
Full Load Amps
OCPD
MCA
Total
Electrical OCPD
Wheel Depth x Diameter - in
Wheel
Data
Construction / Media Type
Nominal Airflow CFM
EATR - -1.00 H2O
Enthalpy EATR - 0.00 H2O
Wheel
EATR - +1.00 H2O
Airflow Data OACF - -1.00 H O
2
OACF - 0.00 H2O
OACF - +1.00 H2O
Thermal Ratings @ 0” Pressure Diff.
100% Airflow Heating
Total
75% Airflow Heating
Effective100% Airflow Cooling
ness
75% Airflow Cooling
100% Airflow Heating
Net
75% Airflow Heating
Effective100% Airflow Cooling
ness
75% Airflow Cooling
Curb
A/C Unit Curb Height - in
Shipping Weight - lbs.
Weights
Net Weight - lbs.

Unitary Products Group

VR074
460v-3ph
(2) 5 / Belt
(2) 12 x 12
1725
Adjustable Sheave
Ball
7
9
1.15
0.25

VR122

208/230v-3ph

575v-3ph

208/230v-3ph

575v-3ph

14.8
20

5
7

22.4
30

7.8
10

0.25

0.25

0.25

460v-3ph
(2) 7.5 / Belt
(2) 15 x 15
1725
Adjustable Sheave
Ball
9.7
15
1.15
0.25

850/49
2.5
3
34.9
50

850/51

1.2
0.95
2
2
16.6
12.7
20
15
3 x 58
Segmented Pies / Polymeric
6600 @ .95

Sensible
68%
73%
68%
73%
68%
73%
68%
73%

4.60%
1.90%
0.90%
0.99%
1.05%
1.09%
Latent
60%
67%
60%
67%
60%
67%
60%
67%
14
2800
2600

0.25

Total
65%
71%
63%
70%
65%
71%
63%
70%

2.5
3
52
70

1.2
0.95
2
2
22.6
19
30
25
3 x 74
Segmented Pies / Polymeric
10800 @ .95

Sensible
68%
73%
68%
73%
68%
73%
68%
73%

3.40%
1.20%
0.40%
0.99%
1.04%
1.07%
Latent
60%
67%
60%
67%
60%
67%
60%
67%
14
3000
2800

Total
65%
71%
63%
70%
65%
71%
63%
70%

17

903106-UTG-A-0912

Models
ZF036-072
ZR036-060
XP036-060
ZS-03-A6
ZK-03-05
XA-03-05

A

C
D

B

Intake Air Blower

14" High Curbs Required -

-1RC0434

Enthalpy Wheel

ERV Model

Unit Size

VR006A06H

036-072
-03 -A6

A
24.75
(629)

B
24.63
(624)

C
37.9 6
(964)

D
8
(203)

CFM

VR011A06H

036-072
-03 -A6

32.13
(816)

33.5
(851)

48.75
(1238)

8
(203)

600-1000

VP011A06H

036-072
-03 -A6

32.13
(816)

33.5
(851)

48.75
(1238)

8
(203)

600-1000

Exhaust Blower

300-550

FIGURE 4 - UERV DIMENSIONAL DATA - 036 THROUGH 072 & -03 THROUGH -A6 (3-6 TONS)
Models
ZH037, 049, 061, 078, 090, 102, 120, 150
ZF078, 090, 102, 120, 150
ZR037, 049, 061, 078, 090, 102, 120, 150
XP078, 090, 102, 120, 150
ZU-A3, -A4, -A5, -06, -07, -08, -10, -12
ZS-06, -07, -08, -10, -12
ZK-A3, -A4, -A5, -06, -07, -08, -10, -12
XA-06, -07, -08, -10, -12

D

B

14" High Curbs Required on "VR06" - 1RC0471
14" High Curbs Required on "VR011" & "VP011" - 1RC0471
14" High Curbs Required on "VR020" & "VP020" - 1RC0476
14" High Curbs Required on "VR028" & "VP028" - 1RC0476

Model Number
VR006B12H
VR011B12H
VP011B12H
VR020B12H
VP020B12H
VR011A12H
VP011A12H
VR020A12H
VP020A12H
VR028A12M
VP028A12M
VR028A12H
VP028A12H

Unit Size
037-061
-A3 -A5

A

C

Outdoor Air
Intake Blower

Exhaust Blower

078-102
-06 -08
078-102
-06 -08
090-150
-07 -12
090-150
-07 -12
090-150
-07 -12

A
24.75
(629)
32.13
(816)
37.25
(946)
32.13
(816)

B
24.63
(624)
33.5
(851)
37.5
(953)
33.5
(851)

C
37.9
(9
44.75
(1137)
60.38
(1533)
44.75
(1137)

D
8
(203)
11
(279)
20.32
(516)
11
(279)

37.25
(946)
42.63
(1083)

37.5
(953)
43.56
(1106)

60.38
(1533)
64.25
(1631)

20.32
(516)
18.32
(466)

090-150
-07 -12

42.63
(1083)

43.56
(1106)

64 25
(1631)

18.32
(466)

CFM
300-550

Enthalpy Wheel
Optional Equipment
Support

600-1000
1100-1700
600-1000
1100-1700
1500-2200
2200-2800

FIGURE 5 - UERV DIMENSIONAL DATA - 037 THROUGH 150 & A3 THROUGH -12 (3 - 12 1/2 TONS)
18

Unitary Products Group

903106-UTG-A-0912

Models
ZF180, 210, 240, 300
ZR180, 240, 300
ZJ180, 210, 240, 300
XP180, 240
ZS-15, -18, -20, -25
ZK-15, -20, -25
ZW-15, -18, -20, -25
XA-15, -20

Outdoor Air Intake
Blower

Enthalpy
Wheel

A
C

B

14" Roofcurbs Required on "VR028" - 1RC0436 - 437
24" High Curbs Required on "VR036" - 1RC0477 or 1RC0478
24" High Curbs Required on "VR046" - 1RC0477 or 1RC0478
24" High Curbs Required on "VR062" - 1RC0477 or 1RC0478
Model Number
VR028A15M
VR028A15H
VR028A25M
VR036A15H
VR036A25H
VR046A15H
VR046A25H
VR062A15M
VR062A25M
VR062A15H
VR062A25H

NOTE:

Exhaust
Blower

Unit Size

A

B

C

D

180, -15

42.63
(1083)

43.56
(1106)

52.13
(1327)

22.50
(572)

46.68
(1186)
52.68
(1338)
58.88
(1496)
58.88
(1496)

57.38
(1457)
57.38
(1457)
57.38
(1457)
57.38
(1457)

60.00
(1524)
60.00
(1524)
60.00
(1524)
60.00
(1524)

30.50
(775)
30.50
(775)
30.50
(775)
30.50
(775)

180-300, -15-25
180, -15
180-300, -15-25
180-300, -15-25
180-300, -15-25
180, -15
180-300, -15-25
180, -15
180-300, -15-25

D

CFM
1500-2200
2200-2800
2800-3600
3400-4600
4800-5600
5500-6200

Refer to Unit Price Pages for exact unit, ERV and curb matchup.

FIGURE 6 - UERV DIMENSIONAL DATA - 180 THROUGH 300 & -15 THROUGH -25 (15 - 25 TONS)

Unitary Products Group

19

903106-UTG-A-0912

Models
Z42, X42
Z33, X33
Z34, X34

82.13

74.75

24.59

20.92

61.23

- Designed to meet unit specifications
- 14’ High Curbs Required
- Rooftop unit blower exceeds the capacity of the ERV Exhaust Blowers
Model Number
VR074A40L
VR074A40V
VR122A40L
VR122A40V

CFM
6000 - 8000
6000 - 8000
8000 - 13000
8000 - 13000

Description
Constant Volume
Variable Air Volume
Constant Volume
Variable Air Volume

- See blower performance charts for airflow at various external static pressures.

FIGURE 7 - MODEL UNIT VR074 AND VR122 (25 - 40 TON)

20

Unitary Products Group

903106-UTG-A-0912

TABLE 12: BLOWER PERFORMANCE CHART - VR074

CFM

6000
6500
7000
7500
8000

Exhaust
Blower RPM for VR074, (2) 5HP, Barometric Hood
External Static Pressure (in water)
0
0.5
1
1.5
910
1060
1200
1300
955
1095
1225
1360
1000
1130
1260
1380
1040
1170
1290
1400
1080
1200
1315
1425

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

2
1400
1430
1475
1500
1530

RPM Range
Low 910-1320
Standard Unit
High 1325-1565
Optional Kit (01-KIT-RH58)

TABLE 13: BLOWER PERFORMANCE CHART - VR122

CFM

8000
9000
10000
11000
12000
13000

Exhaust
Blower RPM for VR122, 7.5HP, Barometric Hood
External Static Pressure (in water)
0
0.5
1
1.5
775
900
1030
1125
825
945
1055
1150
875
985
1090
1190
925
1030
1125
1215
970
1070
1165
1250
1015
1110
1200
1280

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

Unitary Products Group

2
1200
1240
1280
1310
1355
1360

RPM Range
Low 775-1000
Standard Unit
Med 1000-1200
Optional Kit (01-KIT-RM74)
High 1175-1375
Optional Kit (01-KIT-RH74)

21

903106-UTG-A-0912

UPG UERV STAND ALONE MODEL NOMENCLATURE

UPG UERV Model Nomenclature
V D 011 N00 H 4 A AA 2
Product Generation
Product Category

2 = Second Generation

V = Ventilator

Additional Options
Wheel Type

Voltage

D = Stand Alone, Down Discharge
O = Stand Alone, Over and Under
S = Stand Alone, Side by Side

1 = 110v - 1ph
2 = 208/230v - 3ph
4 = 460v - 3ph
5 = 575v - 3ph
8 = 440v-1ph
9 = 208/320v - 1ph

CFM*
011 = 300 to 1100
020 = 1200 to 2000
028 = 1200 to 2800
036 = 2000 to 3600
046 = 3000 to 4600
062 = 4600 to 6200
080 = 6000 to 8000
120 = 8000 to 13000

Stand Alone
N00 = None

Blower Speed
H = High Speed**
M = Medium Speed**
V = Variable Speed
L = Constant Volume

AA = No Options Installed
L1 = Low Ambient Kit (LAK)
L2 = LAK & Motorized Outside Air (MOA)
L3 = LAK, MOA & Stop-Start-Job (SSJ)
L4 = LAK, MOA, SSJ & Pressure Sensor (PS)
L5 = LAK & SSJ
L6 = LAK, SSJ & PS (not used on P models)
L7 = LAK & PS
L8 = LAK, MOA and PS
M1 = Motorized Outside Air (MOA)
M2 = MOA, and Stop Start-Jog (SSJ)
M3 = MOA, SSJ and Pressure Sensor (PS)
M4 = MOA and PS
S1 = Stop-Start-Job (SSJ)
S2 = SSJ and Pressure Sensor (PS)
P1 = Pressure Sensor (PS)

Duct Type
A = No Selection on Rooftop Units
* CFM is ERV wheel rating. This may vary depending on unit cabinet pressure drop.
** These CFM ranges are dependant upon blower motor selection. The choice of H
and M options are only available on the V*028 and V*062 models.
Note: SSJ (Start-Stop-Jog) option is required for economizer equipped units.

PERFORMANCE - ERV SERIES
Use this table to determine ventilation and size requirements. Table shows ERV Air Flow Range. AHRI certified performance
rating provided in specifications and electrical data Effectiveness. "xL", "xM" and "xH" signify low, medium and high speed.
ERV CFM Range
300-1100
1200-2000
1200-2800
2000-3600
3000-4600
4600-6200
6000-8000
8000-13000
Series
D
O
S

22

ERV Series
D011,O011,S011
D020,O020,S020
D028,O028,S028
D036,O036,S036
D046,O046,S046
D062,O062,S062
D080
D120
ERV Series Descriptions
Description
Down Discharge Outdoor Application
Stand alone outdoor application that attaches to horizontal return air duct in an over and under design.
Stand alone outdoor application that attaches to horizontal return air duct in an side by side design.

Unitary Products Group

903106-UTG-A-0912

TABLE 14: FILTER SIZES - STAND ALONE ERV SERIES
Series

D

O

S

Size

Return Filter
Width
Height
14
20
16
20
20
20
16
20
24
24
14
20
18
20
20
20
18
25
16
16
20
20
16 / 14
20
24
24
14
20
14
20
16
20
20
20
16
20
24
24
14
20

Qty
1
2
2
3
2
5
6
8
1
2
2
2/1
2
5
1
2
2
3
2
5

011
020
028
036
046
062
080
120
011
020
028
036
046
062
011
020
028
036
046
062

Type

2" PLT

2" PLT

2" PLT

Intake Filter
Width
Height
16.25
10.375
12.5
20
14.75
32.25
16.5
32.25
20
36
20 / 20
36 / 12.5
32.25
21.5
32.25
20.25
27.5
10
32.25
18.5
40.25
21.5
40.25
21.5
40.25
21.5
40.25
25.5
16.25
10.375
12.5
20
14.75
32.25
16.5
32.25
20
36
20 / 20
36 / 12.5

Qty
1
1
1
1
1
1/1
2
3
1
1
1
1
1
1
1
1
1
1
1
1/1

Type

1" ME

1" ME

1" ME

SERVICE CLEARANCES - STAND ALONE SERIES ERVS

A

A
B

B

D

D
“O” Series

“D” Series

C

C

Dimension
(inches)
A
B
C
D

11
36
60
48
36

20
36
60
60
36

28
36
60
60
48

"D" Series
36 46
36 36
60 60
60 72
48 60

A
B

D
“S” Series

62
36
60
72
60

80
36
72
72
72

120
36
84
72
84

Dimension
(inches)
A
B
C
D

Dimension
(inches)
A
B
C
D

11
12
36
48
36

11
12
60
48
36

20
12
36
60
36

20
12
60
60
36

"O" Series
28
36
12
12
36
36
60
60
48
48

"S" Series
28
36
12
12
60
60
60
60
48
48

46
12
36
60
60

46
12
60
72
60

62
12
36
60
60

62
12
60
72
60

C

Unitary Products Group

23

903106-UTG-A-0912

TABLE 15: SPECIFICATIONS AND ELECTRICAL DATA - 300 THROUGH 1100 CFM ERV'S
D011 Stand Alone
Down Discharge
208/230v 208/230v 460v
1ph
3ph
3ph

Model Numbers
Line Voltage - 60hz
Motor - hp
Wheel Size (dia x width) -in
Motor Speed -rpm
Fresh Air
Motor Speed(s)
Blower
Bearing Type
Full Load Amps
Service Factor
Motor - hp Stationary
Wheel Size (dia x width) -in
Motor Speed -rpm
Exhaust Air
Motor Speed(s)
Blower
Bearing Type
Full Load Amps-Stationary
Service Factor
Potential Volts
Wheel Electrical
Motor Speed -rpm
Data
Full Load Amps
Total
MCA - Stationary
Electrical
OCPD - Stationary
Wheel Depth - in
Wheel Data
Wheel Diameter - in
Construction / Media
Curb
Curb Hgt - in
Shipping Weight - lbs. (kg)
Weights
Net Weight - lbs. (kg)

575v
3ph

1.5 / Belt
9x4
1725
Adjustable Sheave
Ball
9.1
5.6
2.8
2.0
1.15
1.5 / Belt
9x4
1725
Adjustable Sheave
Ball
9.1
5.6
2.8
2.0
1.15
208 - 230
1050
0.3
20.8
12.9
6.6
4.8
30
15
9
7
3
25.3
Segmented Pies/Polymeric
14
318
245

O011 S/A Over & Under
S011 S/A Side by Side
208/230v 208/230v 460v
460v
1ph
3ph
1ph
3ph
1.5 / Belt
9x4
1725
Adjustable Sheave
Ball
9.1
5.6
2.8
1.15
1.5 / Belt
9x4
1725
Adjustable Sheave
Ball
9.1
5.6
2.8
1.15
208 - 230
1050
0.3
20.8
12.9
6.6
30
15
9
3
25.3
Segmented Pies/Polymeric
14
318
245

2.0

2.0

4.8
7

AHRI Certified Ratings
Thermal Ratings @ 0" Pressure Diff.

Total Effectiveness

Net Effectiveness

Sensible

Latent

Total

100% Airflow Heating
75% Airflow Heating

76%
81%

68%
73%

73%
78%

100% Airflow Cooling

76%

68%

72%

75% Airflow Cooling

81%

73%

76%

100% Airflow Heating

76%

68%

73%

75% Airflow Heating

81%

73%

78%

100% Airflow Cooling

76%

68%

72%

75% Airflow Cooling

81%

73%

76%

Enthalpy Wheel AHRI Rating Data
Nominal Airflow CFM

900 @ 1.0

EATR - -1.00 H O

9.30%

2

EATR - 0.00 H O

0.70%

EATR - +1.00 H O

0.00%

OACF - -1.00 H O

0.97

OACF - 0.00 H O

1.19

OACF - +1.00 H O

1.34

2

2

2

2

2

24

Unitary Products Group

903106-UTG-A-0912

TABLE 16: SPECIFICATIONS AND ELECTRICAL DATA - 1200 THROUGH 2000 CFM ERV'S
D020 Stand Alone
Down Discharge
208/230v
460v
575v
3ph
3ph
3ph

Model Numbers
Line Voltage - 60hz
Motor - hp
Wheel Size (dia x width) -in
Motor Speed -rpm
Fresh Air
Motor Speed(s)
Blower
Bearing Type
Full Load Amps
Service Factor
Motor - hp Stationary
Wheel Size (dia x width) -in
Motor Speed -rpm
Exhaust Air Blower Motor Speed(s)
Bearing Type
Full Load Amps-Stationary
Service Factor
Potential Volts
Wheel Electrical
Motor Speed -rpm
Data
Full Load Amps
Total
MCA - Stationary
Electrical
OCPD - Stationary
Wheel Depth - in
Wheel
Wheel Diameter - in
Data
Construction / Media
Curb
Curb Hgt - in
Weights

Shipping Weight - lbs. (kg)
Net Weight - lbs. (kg)

O020 S/A Over and Under
S020 S/A Side by Side
208/230v
460v
575v
3ph
3ph
3ph

2 / Belt
9x9
1725
Adjustable Sheave
Ball
6.0
2.6
2.4
1.15

2 / Belt
9x9
1725
Adjustable Sheave
Ball
6.0
2.6
2.4
1.15

2 / Belt
9x9
1725
Adjustable Sheave
Ball
6.0
2.6
2.4
1.15

2 / Belt
9x9
1725
Adjustable Sheave
Ball
6.0
2.6
2.4
1.15

208 - 230
1050
0.3
13.8
6.2
5.7
20
9
8
3
30.346
Segmented Pies/Polymeric
14
425
345

208 - 230
1050
0.3
13.8
6.2
5.7
20
9
8
3
30.346
Segmented Pies/Polymeric
14
425
345

AHRI Certified Ratings
Thermal Ratings @ 0" Pressure Diff.
100% Airflow Heating
75% Airflow Heating
Total Effectiveness
100% Airflow Cooling
75% Airflow Cooling
100% Airflow Heating
75% Airflow Heating
Net Effectiveness
100% Airflow Cooling
75% Airflow Cooling
Enthalpy Wheel AHRI Rating Data
Nominal Airflow CFM
EATR - -1.00 H O
EATR - 0.00 H O
EATR - +1.00 H O
OACF - -1.00 H O
OACF - 0.00 H O
OACF - +1.00 H O
2

2

2

2

2

2

Unitary Products Group

Sensible
68%
72%
68%
72%
68%
72%
68%
72%

Latent
61%
67%
61%
67%
61%
67%
61%
67%

Total
65%
71%
64%
70%
65%
71%
64%
70%

1600 @ .95
7.80%
0.40%
0.00%
0.97
1.16
1.29

25

903106-UTG-A-0912

TABLE 17: SPECIFICATIONS AND ELECTRICAL DATA - 1200 THROUGH 2800 CFM ERV'S
D028 Stand Alone
Down Discharge
208/230v
460v
575v
3ph
3ph
3ph

Model Numbers
Line Voltage - 60hz

O028S/A Over and Under
S028 S/A Side by Side
208/230v
460v
575v
3ph
3ph
3ph

Motor - hp / type
Wheel Size (dia x width) -in
Motor Speed -rpm
Motor Speed(s)
Bearing Type
Full Load Amps
Service Factor

3 / Belt
10 x 10
1725
Adjustable Sheave
Ball
9.4
4.3
3.2
1.15

3 / Belt
10 x 10
1725
Adjustable Sheave
Ball
9.4
4.3
3.2
1.15

Motor - hp Stationary
Wheel Size (dia x width) -in
Motor Speed -rpm
Exhaust Air Blower Motor Speed(s)
Bearing Type
Full Load Amps-Stationary
Service Factor

3 / Belt
10 x 10
1725
Adjustable Sheave
Ball
9.4
4.3
3.2
1.15

3 / Belt
10 x 10
1725
Adjustable Sheave
Ball
9.4
4.3
3.2
1.15

0.05
200 / 208 - 230
825
0.6

0.05
200 / 208 - 230
825
0.6

Fresh Air
Blower

Wheel Electrical
Data
Total
Electrical
Wheel
Data
Curb
Weights

Motor - hp (1 phase)
Potential Volts
Motor Speed -rpm
Full Load Amps
MCA - Stationary
OCPD - Stationary

21.8
30

Wheel Depth x Dia - in
Construction / Media Type
Curb Height - in
Shipping Weight - lbs. (kg)
Net Weight - lbs. (kg)

10.3
12

7.8
10

21.8
30

3 x 37.759
Segmented Pies/Polymeric
14
470
395

10.3
12

7.8
10

3 x 37.759
Segmented Pies/Polymeric
14
470
395

AHRI Certified Ratings
Thermal Ratings @ 0" Pressure Diff.
100% Airflow Heating
75% Airflow Heating
Total Effectiveness
100% Airflow Cooling
75% Airflow Cooling
100% Airflow Heating
75% Airflow Heating
Net Effectiveness
100% Airflow Cooling
75% Airflow Cooling
Enthalpy Wheel AHRI Rating Data
Nominal Airflow CFM
EATR - -1.00 H O
EATR - 0.00 H O
EATR - +1.00 H O
OACF - -1.00 H O
OACF - 0.00 H O
OACF - +1.00 H O
2

2

2

2

2

2

26

Sensible
68%
74%
68%
74%
68%
74%
68%
74%

Latent
60%
67%
60%
67%
60%
67%
60%
67%

Total
65%
71%
63%
70%
65%
71%
63%
70%

2600 @ .95
6.10%
0.40%
0.00%
0.99
1.13
1.23

Unitary Products Group

903106-UTG-A-0912

TABLE 18: SPECIFICATIONS AND ELECTRICAL DATA - 2000 THROUGH 3600 CFM ERV'S
Model Numbers
Line Voltage - 60hz
Motor - hp / type
Wheel Size (dia x width) -in
Motor Speed -rpm
Fresh Air
Motor Speed(s)
Blower
Bearing Type
Full Load Amps
Service Factor
Motor - hp Stationary
Wheel Size (dia x width) -in
Motor Speed -rpm
Exhaust Air Blower Motor Speed(s)
Bearing Type
Full Load Amps-Stationary
Service Factor
Motor - hp (1 phase)
Wheel Electrical Potential Volts
Data
Motor Speed -rpm
Full Load Amps
MCA - Stationary
Total
Electrical
OCPD - Stationary
Wheel Depth x Diameter - in
Wheel
Data
Construction / Media Type
Curb
Curb Height - in
Shipping Weight - lbs. (kg)
Weights
Net Weight - lbs. (kg)

D036 Stand Alone
Down Discharge
208/230v
460v
575v
3ph
3ph
3ph
3 / Belt
12 x 9
1725
Adjustable Sheave
Ball
9.4
4.3
3.2
1.15
3 / Belt
12 x 9
1725
Adjustable Sheave
Ball
9.4
4.3
3.2
1.15
0.17
200 / 208 - 230
1075
1.2
22.4
10.9
8.4
30
15
10
3 x 41.825
Segmented Pies/Polymeric
14
571
475

O036 S/A Over and Under
S036 S/A Side by Side
208/230v
460v
575v
3ph
3ph
3ph
3 / Belt
12 x 9
1725
Adjustable Sheave
Ball
9.4
4.3
3.2
1.15
3 / Belt
12 x 9
1725
Adjustable Sheave
Ball
9.4
4.3
3.2
1.15
0.17
200 / 208 - 230
1075
1.2
22.4
10.9
8.4
30
15
10
3 x 41.825
Segmented Pies/Polymeric
14
571
475

AHRI Certified Ratings
Thermal Ratings @ 0" Pressure Diff.

Total Effectiveness

Net Effectiveness

Nominal Airflow CFM
EATR - -1.00 H O
EATR - 0.00 H O
EATR - +1.00 H O
OACF - -1.00 H O
OACF - 0.00 H O
OACF - +1.00 H O
2

2

2

2

2

2

Unitary Products Group

Sensible

100% Airflow Heating
75% Airflow Heating
100% Airflow Cooling
75% Airflow Cooling
100% Airflow Heating
75% Airflow Heating
100% Airflow Cooling
75% Airflow Cooling
Enthalpy Wheel AHRI Rating Data

68%
74%
68%
74%
68%
74%
68%
74%

Latent

Total

60%
67%
60%
67%
60%
67%
60%
67%

65%
71%
63%
70%
65%
71%
63%
70%

3100 @ .9
4.90%
1.30%
0.30%
0.99
1.07
1.12

27

903106-UTG-A-0912

TABLE 19: SPECIFICATIONS AND ELECTRICAL DATA - 3000 THROUGH 4600 CFM ERV'S
Model Numbers
Line Voltage - 60hz
Motor - hp / type
Wheel Size (dia x width) -in
Motor Speed -rpm
Fresh Air
Motor Speed(s)
Blower
Bearing Type
Full Load Amps
Service Factor
Motor - hp Stationary
Wheel Size (dia x width) -in
Motor Speed -rpm
Exhaust Air Blower Motor Speed(s)
Bearing Type
Full Load Amps-Stationary
Service Factor
Enthalpy Wheel
Electrical Data
Total
Electrical
Wheel
Data
Curb
Weights

Motor - hp (1 phase)
Potential Volts
Motor Speed -rpm
Full Load Amps
MCA - Stationary
OCPD - Stationary

D046 Stand Alone
Down Discharge
208/230v
460v
575v
3ph
3ph
3ph
5 / Belt
12 x 12
1725
Adjustable Sheave
Ball
14.8
7.0
5.1
1.15
5 / Belt
12 x 12
1725
Adjustable Sheave
Ball
14.8
7.0
5.1
1.15

34.5
40

Wheel Depth x Diameter - in
Construction / Media Type
Curb Height - in

0.17
200 / 208 - 230
1075
1.2
17.0
25

12.7
15

O046 S/A Over and Under
S046 S/A Side by Side
208/ 230v
460v
575v
3ph
3ph
3ph
5 / Belt
12 x 12
1725
Adjustable Sheave
Ball
14.8
7.0
5.1
1.15
5 / Belt
12 x 12
1725
Adjustable Sheave
Ball
14.8
7.0
5.1
1.15

34.5
40

0.17
200 / 208 - 230
1075
1.2
17.0
25

12.7
15

3 x 46.776
Segmented Pies/Polymeric
14

3 x 46.776
Segmented Pies/Polymeric
14

Shipping Weight - lbs. (kg)

920

920

Net Weight - lbs. (kg)

805

805

AHRI Certified Ratingss
Thermal Ratings @ 0" Pressure Diff.
100% Airflow Heating
75% Airflow Heating
Total Effectiveness
100% Airflow Cooling
75% Airflow Cooling
100% Airflow Heating
75% Airflow Heating
Net Effectiveness
100% Airflow Cooling
75% Airflow Cooling
Enthalpy Wheel AHRI Rating Data
Nominal Airflow CFM
EATR - -1.00 H O
EATR - 0.00 H O
EATR - +1.00 H O
OACF - -1.00 H O
OACF - 0.00 H O
OACF - +1.00 H O
2

2

2

2

2

2

28

Sensible
68%
73%
68%
73%
68%
73%
68%
73%

Latent
60%
67%
60%
67%
60%
67%
60%
67%

Total
65%
71%
63%
70%
65%
71%
63%
70%

3900 @ .95
4.40%
1.10%
0.20%
0.99
1.06
1.11
Unitary Products Group

903106-UTG-A-0912

TABLE 20: SPECIFICATIONS AND ELECTRICAL DATA - 4600 THROUGH 6200 CFM ERV'S
Model Numbers
CFM Range
Line Voltage - 60hz
Motor - hp / type
Wheel Size (dia x width) -in
Motor Speed -rpm
Fresh Air
Motor Speed(s)
Blower
Bearing Type
Full Load Amps
Service Factor
Motor - hp Stationary
Wheel Size (dia x width) -in
Motor Speed -rpm
Exhaust Air Blower Motor Speed(s)
Bearing Type
Full Load Amps-Stationary
Service Factor
Motor - hp (1 phase)
Enthalpy Wheel Potential Volts
Electrical Data Motor Speed -rpm
Full Load Amps
MCA - Stationary
Total
Electrical
OCPD - Stationary
Wheel Depth x Diameter - in
Wheel
Data
Construction / Media Type
Curb
Curb Height - in
Shipping Weight - lbs. (kg)
Weights
Net Weight - lbs. (kg)

D062 Stand Alone
Down Discharge
4600-6200 CFM
208/230v
460v
575v
3ph
3ph
3ph
5 / belt
15 x 15
1725
Adjustable Sheave
Ball
14.8
7.0
5.1
1.15
5 / Belt
12 x 12
1725
Adjustable Sheave
Ball
14.8
7.0
5.1
1.15
0.17
200 / 208 - 230
1075
1.2
34.5
17.0
12.7
40
25
15
3 x 52.026
Segmented Pies/Polymeric
14
1250
1075

O062 S/A Over and Under
S062 S/A Side by Side
4600-6200 CFM
208/230v
460v
575v
3ph
3ph
3ph
5 / belt
15 x 15
1725
Adjustable Sheave
Ball
14.8
7.0
5.1
1.15
5 / Belt
12 x 12
1725
Adjustable Sheave
Ball
14.8
7.0
5.1
1.15
0.17
200 / 208 - 230
1075
1.2
34.5
17.0
12.7
40
25
15
3 x 52.026
Segmented Pies/Polymeric
14
1250
1075

AHRI Certified Ratingss
Thermal Ratings @ 0" Pressure Diff.
100% Airflow Heating
75% Airflow Heating
Total Effectiveness
100% Airflow Cooling
75% Airflow Cooling
100% Airflow Heating
75% Airflow Heating
Net Effectiveness
100% Airflow Cooling
75% Airflow Cooling
Enthalpy Wheel AHRI Rating Data
Nominal Airflow CFM
EATR - -1.00 H O
EATR - 0.00 H O
EATR - +1.00 H O
OACF - -1.00 H O
OACF - 0.00 H O
OACF - +1.00 H O
2

2

2

2

2

2

Unitary Products Group

Sensible
68%
73%
68%
73%
68%
73%
68%
73%

Latent
60%
67%
60%
67%
60%
67%
60%
67%

Total
65%
71%
63%
70%
65%
71%
63%
70%

5500 @ .95
4.00%
1.00%
0.20%
0.99
1.06
1.10

29

903106-UTG-A-0912

TABLE 21: SPECIFICATIONS AND ELECTRICAL DATA - 6000 THROUGH 13000 CFM ERV'S
D080 Stand Alone
Down Discharge
208/230v
460v 3ph 575v 3ph
3ph
10 / Belt
15 x 15
1725
Adjustable Sheave
Ball
26.8
13.4
10.3
1.15

D120 Stand Alone
Down Discharge
208/230v
460v 3ph 575v 3ph
3ph
15 / Belt
22 x 15
1725
Adjustable Sheave
Ball
41.0
18.5
15.4
1.15

7.5 / Belt
18 x 18
1725
Adjustable Sheave
Ball
22.4
9.7
7.8
1.15

10 / Belt
22 x 22
1725
Adjustable Sheave
Ball
32.6
13.4
10.3
1.15

Motor - hp (3 phase)
Potential Volts
Motor Speed -rpm
Full Load Amps

0.25

MCA - Stationary
OCPD - Stationary

Model Numbers
Line Voltage - 60hz

Fresh Air
Blower

Motor - hp Stationary
Wheel Size (dia x width) -in
Motor Speed -rpm
Motor Speed(s)
Bearing Type
Full Load Amps-Stationary
Service Factor

Motor - hp / type
Wheel Size (dia x width) -in
Motor Speed -rpm
Exhaust Air Blower Motor Speed(s)
Bearing Type
Full Load Amps
Service Factor
Enthalpy Wheel
Electrical Data
Total
Electrical
Wheel
Data

Wheel Depth x Diameter - in
Construction / Media Type

Curb
Weights

Curb Height - in
Shipping Weight - lbs. (kg)
Net Weight - lbs. (kg)

0.33

0.25

2.5

0.25
200 / 208 - 230
1725
1.2

0.33

2.5

0.25
200 / 208 - 230
1725
1.2

1.4

63.2
90

27.7
40

22.1
35

86.2
125

37.7
50

31.0
45

1.4

3 x 58
Segmented Pies/Polymeric

3 x 74
Segmented Pies/Polymeric

14
2800
2600

14
3000
2800

AHRI Certified Ratingss
Thermal Ratings @ 0" Pressure Diff.
100% Airflow Heating
75% Airflow Heating
Total Effectiveness
100% Airflow Cooling
75% Airflow Cooling
100% Airflow Heating
75% Airflow Heating
Net Effectiveness
100% Airflow Cooling
75% Airflow Cooling
Enthalpy Wheel AHRI Rating Data
Nominal Airflow CFM
6600 @ .95
EATR - -1.00 H O
4.60%
EATR - 0.00 H O
1.90%
EATR - +1.00 H O
0.90%
OACF - -1.00 H O
0.99
OACF - 0.00 H O
1.05
OACF - +1.00 H O
1.09
2

2

2

2

2

2

30

Sensible
68%
73%
68%
73%
68%
73%
68%
73%

Latent
60%
67%
60%
67%
60%
67%
60%
67%

Total
65%
71%
63%
70%
65%
71%
63%
70%

10800 @ .95
3.40%
1.20%
0.40%
0.99
1.04
1.07

Unitary Products Group

903106-UTG-A-0912

D SERIES STAND ALONE ERV'S FOR DOWN DISCHARGE DUCT ARRANGEMENTS
FEATURES AND NOTES
1.
2.
3.
4.
5.
6.

Stand alone design allows higher levels of outdoor air to
be introduced into the a/c space.
Static test ports provided to verify intake and exhaust
CFM.
Balancing damper(s) field supplied in duct work when
connected to ERV.
Roof curbs are available for the ERV's.
See blower performance charts for airflow at various
E.S.P.

EXHAUST AIR HOOD

Filter rack with 2" pleated filters included.
ERV Roof Curbs
Series
Model No
D011
01-2D1-2514
D020
01-2D1-3014
D028
01-2D1-3614
D036
01-2D1-4114
D046
01-2D1-4614
D062
01-2D1-5214
D080
01-201D-5814
D120
01-201D-7414

FRESH AIR HOOD

RETURN AIR DUCT
(FIELD SUPPLIED)

SUPPLY AIR DUCT
(FIELD SUPPLIED)

A

E

G

J

F

I

B

H

D

K
J

C

ERV Data
ERV
CFM Range
Series
D011
D020
D028
D036
D046
D062
D080
D120

300-1100
1200-2000
1200-2800
2000-3600
3000-4600
4600-6200
6000-8000
8000-13000

Unitary Products Group

Dimensional Data
Duct Size
(G x J)

A

B

C

17.00 x 11.38
21.88 x 14.00
20.25 x 17.00
23.38 x 17.38
23.38 x 20.38
29.38 x 30.00
38.75 x 35.38
40.00 x 44.50

44.75
54.38
52.25
60.00
60.00
72.00
101.38
120.38

32.13
37.25
42.63
46.69
52.69
70.88
78.38
88.38

33.50
37.50
43.56
57.37
57.37
63.63
71.34
86.63

ERV
D

E

14.38 43.00
17.50 52.75
25.50 49.50
25.50 55.75
28.06 55.75
37.75 67.75
21.75 99.75
28.50 118.50

Roof Curb
H
I

F

G

39.00
48.75
45.50
51.75
51.75
63.75
95.75
114.50

17.50
22.38
20.75
23.88
23.88
29.88
38.75
44.88

30.25
35.50
41.00
41.81
47.81
66.00
76.75
86.50

26.25
31.50
37.00
37.81
43.81
62.00
72.75
82.50

J

K

11.88
14.50
17.50
17.91
20.91
30.50
35.38
40.25

2.50
2.50
2.00
2.00
2.00
2.00
2.00
2.00

31

903106-UTG-A-0912

TABLE 22: AIRFLOW PERFORMANCE - DOWNFLOW CONFIGURATION FOR D011 & D020

Blower RPM for D011

CFM
300
500
700
900
1100

CFM
300
500
700
900
1100

SUPPLY
Mist Eliminator Filter in Intake Hood (1.5HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
N/A
N/A
1175
1350
1450
N/A
1170
1340
1540
1655
1295
1425
1600
1625
1795
1540
1660
1720
1790
2030
1785
1915
2025
2185
N/A

1.25
1605
1725
1960
2110
N/A

1.5
1730
1840
2035
2195
N/A

EXHAUST
Barometric Hood, 2" Pleated Filters (1.5HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
N/A
N/A
1030
1225
N/A
N/A
1025
1180
1265
1425
1120
1190
1340
1445
1540
1285
1525
1500
1575
1670
1570
1665
1670
1775
1860

1.25
N/A
1535
1645
1785
1920

1.5
N/A
N/A
1720
1865
N/A

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

RPM Range
Low
1000-1300
Standard Unit
Medium 1300-1565
Optional Kit
High
1750-2200 Optional Kit

Blower RPM for D020

CFM
1200
1400
1600
1800
2000

CFM
1200
1400
1600
1800
2000

SUPPLY
Mist Eliminator Filter in Intake Hood (2HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
1055
1135
1295
1420
1540
1140
1240
1340
1490
1600
1200
1330
1460
1565
1645
1320
1405
1525
1615
1705
1415
1515
1605
1690
1775

1.25
1650
1690
1740
1785
1875

1.5
1725
1795
1830
1885
1960

EXHAUST
Barometric Hood, 2" Pleated Filters (2HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
1010
1195
1350
1445
1580
1125
1315
1435
1545
1620
1185
1370
1500
1610
1695
1305
1485
1600
1685
1781
1410
1550
1670
1765
1855

1.25
1685
1730
1790
1955
N/A

1.5
1735
1800
1965
2030
N/A

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

32

Low
Medium
High

RPM Range
1000-1300 Standard Unit
1300-1700 Optional Kit
1700-2080 Optional Kit

Unitary Products Group

903106-UTG-A-0912

TABLE 23: AIRFLOW PERFORMANCE - DOWNFLOW CONFIGURATION FOR D028 & D036

Blower RPM for D028

CFM
1200
1600
2000
2400
2800

CFM
1200
1600
2000
2400
2800

SUPPLY
Mist Eliminator Filter in Intake Hood (3HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
N/A
790
960
1110
1210
750
900
1005
1145
1230
900
1005
1105
1210
1275
1005
1125
1210
1275
1365
1125
1230
1315
1380
1450

1.25
1315
1365
1400
1450
1535

1.5
1380
1410
1450
1500
1600

EXHAUST
Barometric Hood, 2" Pleated Filters (3HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
750
885
1015
1145
1260
870
1015
1125
1215
1325
1015
1145
1240
1345
1410
1125
1250
1345
1430
1500
1250
1410
1485
1520
1630

1.25
1350
1410
1485
1575
1650

1.5
1485
1500
1560
1630
1675

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

RPM Range
Low
750-975
Standard Unit
Medium 1008-1314 Optional Kit
High
1311-1708 Optional Kit

Blower RPM for D036

CFM
2000
2400
2800
3200
3600

CFM
2000
2400
2800
3200
3600

SUPPLY
Mist Eliminator Filter in Intake Hood (3HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
725
825
900
1000
1070
800
900
1000
1070
1160
900
1000
1070
1160
1250
1000
1070
1160
1250
1275
1055
1180
1250
1300
1360

1.25
1180
1250
1275
1340
N/A

1.5
1250
1275
1340
1400
N/A

EXHAUST
Barometric Hood, 2" Pleated Filters (3HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
750
865
950
1030
1100
820
950
1035
1100
1200
925
1035
1150
1200
1265
1035
1160
1215
1265
1325
1100
1215
1300
1350
1390

1.25
1200
1265
1315
1350
N/A

1.5
1265
1300
1350
1390
N/A

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

Unitary Products Group

Low
Medium
High

RPM Range
725-975
Standard Unit
1000-1315 Optional Kit
1215-1425 Optional Kit
33

903106-UTG-A-0912

TABLE 24: AIRFLOW PERFORMANCE - DOWNFLOW CONFIGURATION FOR D046 & D062

Blower RPM for D046

CFM
3000
3400
3800
4200
4600

CFM
3000
3400
3800
4200
4600

SUPPLY
Mist Eliminator Filter in Intake Hood (5HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
900
1030
1100
1165
1240
975
1085
1175
1240
1290
1070
1175
1240
1290
1350
1165
1240
1320
1350
1430
1240
1320
1375
1430
1500

1.25
1285
1350
1400
1465
1515

1.5
1350
1400
1465
1515
1580

EXHAUST
Barometric Hood, 2" Pleated Filters (5HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
955
1100
1160
1245
1280
1055
1185
1245
1300
1375
1160
1300
1360
1400
1425
1245
1375
1450
1480
1500
1360
1450
1500
1585
1600

1.25
1360
1425
1530
1585
1650

1.5
1425
1480
1585
1650
1700

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

RPM Range
Low
780-1020 Standard Unit
Medium 1000-1315 Optional Kit
High
1315-1700 Optional Kit

Blower RPM for D062

CFM
4600
5000
5400
5800
6200

CFM
4600
5000
5400
5800
6200

SUPPLY
Mist Eliminator Filter in Intake Hood (5HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
815
900
975
1045
1085
880
940
1015
1060
1135
915
975
1045
1125
1150
975
1045
1085
1175
1250
1000
1075
1165
1200
N/A

1.25
1125
1175
1195
1260
N/A

1.5
1175
1215
1250
N/A
N/A

EXHAUST
Barometric Hood, 2" Pleated Filters (5HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
825
915
1000
1025
1100
890
975
1025
1100
1140
925
1000
1085
1140
1170
975
1025
1140
1170
1240
1025
1120
1170
N/A
N/A

1.25
1140
1170
1240
N/A
N/A

1.5
1170
1240
1280
N/A
N/A

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

34

Low
Medium
High

RPM Range
820-1000 Standard Unit
1000-1200 Optional Kit
1175-1375 Optional Kit
Unitary Products Group

903106-UTG-A-0912

TABLE 25: AIRFLOW PERFORMANCE - DOWNFLOW CONFIGURATION FOR D080 & D120

Blower RPM for D080

CFM
6000
6400
6800
7200
7600
8000

CFM
6000
6400
6800
7200
7600
8000

SUPPLY
Mist Eliminator Filter in Intake Hood (10HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
737
794
851
908
961
786
839
893
947
998
836
886
937
987
1036
885
931
979
1027
1074
934
978
1024
1069
1114
983
1025
1068
1111
1154

1.25
1012
1047
1083
1119
1159
1196

1.5
1061
1094
1129
1163
1200
1237

EXHAUST
Barometric Hood, 2" Pleated Filters (7.5HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
599
660
716
769
818
639
695
748
798
846
679
733
783
831
877
719
769
817
863
907
759
808
854
897
940
799
845
889
931
972

1.25
866
892
921
949
980
1011

1.5
911
935
963
990
1020
1049

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

RPM Range
Low
Medium
High

Standard Unit
Optional Kit
Optional Kit

Blower RPM for D120

CFM
8000
8800
9600
10400
11200
12000

CFM
8000
8800
9600
10400
11200
12000

SUPPLY
Mist Eliminator Filter in Intake Hood (15HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
427
470
512
552
591
469
509
547
584
621
512
548
583
618
651
555
589
621
653
684
597
629
659
689
718
640
670
698
726
754

1.25
630
656
684
715
747
781

1.5
667
691
717
746
776
808

EXHAUST
Barometric Hood, 2" Pleated Filters (15HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
437
480
521
551
600
481
520
558
595
631
525
561
596
630
663
569
602
634
665
657
612
643
674
703
732
656
685
713
741
768

1.25
639
665
696
727
761
795

1.5
676
701
728
758
789
822

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

Unitary Products Group

RPM Range
Low
Medium
High

Standard Unit
Optional Kit
Optional Kit
35

903106-UTG-A-0912

S SERIES STAND ALONE ERV'S FOR SIDE BY SIDE DUCT ARRANGEMENTS

RETURN DUCT FLANGE OPENING
SUPPLY DUCT FLANGE OPENING

FEATURES AND NOTES
1.
2.
3.

4.
5.
6.

Stand alone design allows higher levels of outdoor air to
be introduced into the conditioned space.
Static test ports provided to verify intake and exhaust
CFM.
Balancing damper(s) is field provided when connected to
ductwork. System may not operate properly without balancing damper.
Roof curbs are available for the ERV's.
See blower performance charts for airflow at various
E.S.P.
Filter rack with 2" pleated filters included. Found in return
air section.

K
B
A

F

J
C
E

ERV Roof Curbs
Series
Model No
01-2D1-2514
S011
01-2D1-3014
S020
01-2D1-3614
S028
01-2D1-4114
S036
01-2D1-4614
S046
01-2D1-5214
S062

I
H
D
G
D
H

ERV Data

36

Dimensional Data

ERV Series

CFM Range

A

B

C

D

E

F

G

H

I

J

K

S011
S020
S028
S036
S046

300-1100
1200-2000
1200-2800
2000-3600
3000-4600

44.75
54.38
52.25
60.00
60.00

32.13
37.25
42.63
46.69
52.69

33.50
37.50
43.56
57.37
57.37

11.00
12.00
14.00
16.50
16.50

27.00
30.00
32.00
39.50
39.50

4.00
5.87
8.69
12.00
12.00

4.25
5.13
5.25
5.50
8.69

2.88
4.06
4.25
4.05
5.50

2.50
1.63
2.88
5.88
5.88

20.75
20.75
20.75
20.75
20.75

14.38
17.50
25.50
25.50
28.06

Unitary Products Group

903106-UTG-A-0912

TABLE 26: AIRFLOW PERFORMANCE - SIDE BY SIDE DUCT CONFIGURATION FOR S011 & S020

Blower RPM for S011

CFM
300
500
700
900
1100

CFM
300
500
700
900
1100

SUPPLY
Mist Eliminator Filter in Intake Hood (1.5HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
N/A
N/A
1020
1205
1365
N/A
1015
1200
1320
1460
990
1190
1315
1455
1560
1150
1310
1450
1555
1660
1305
1440
1550
1655
1740

1.25
1480
1565
1665
1680
1815

1.5
1590
1670
1715
1795
1895

EXHAUST
Barometric Hood, 2" Pleated Filters (1.5HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
N/A
N/A
1150
1285
1415
N/A
1145
1275
1410
1510
1140
1270
1405
1505
1590
1320
1435
1585
1665
1705
1495
1580
1660
1755
1880

1.25
1515
1545
1715
1810
N/A

1.5
1640
1720
1815
1930
N/A

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

Low
Medium
High

RPM Range
100-1300 Standard Unit
1300-1700 Optional Kit
1750-2200 Optional Kit

Blower RPM for S020

CFM
1200
1400
1600
1800
2000

CFM
1200
1400
1600
1800
2000

SUPPLY
Mist Eliminator Filter in Intake Hood (2HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
1065
1285
1375
1415
1495
1140
1330
1410
1440
1555
1290
1400
1480
1545
1670
1395
1470
1540
1665
1735
1460
1530
1650
1725
1795

1.25
1580
1660
1745
1800
1870

1.5
1685
1760
1835
1880
1960

EXHAUST
Barometric Hood, 2" Pleated Filters (2HP)
External Static Pressure (in water)
0
0.5
0.75
1
0.25
1175
1290
1430
1520
1680
1245
1425
1515
1675
1755
1400
1505
1670
1750
1825
1495
1660
1740
1820
1900
1645
1730
1815
1895
1965

1.25
1765
1830
1910
1975
2080

1.5
1850
1920
1980
2090
2170

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

Unitary Products Group

Low
Medium
High

RPM Range
100-1300 Standard Unit
1300-1750 Optional Kit
1750-2200 Optional Kit

37

903106-UTG-A-0912

TABLE 27: AIRFLOW PERFORMANCE - SIDE BY SIDE DUCT CONFIGURATION FOR S028 & S036

Blower RPM for S028

CFM
1200
1600
2000
2400
2800

CFM
1200
1600
2000
2400
2800

SUPPLY
Mist Eliminator Filter in Intake Hood (3HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
N/A
955
1070
1210
1370
N/A
1065
1205
1305
1460
1060
1200
1290
1445
1530
1190
1335
1440
1490
1575
1300
1460
1550
1645
1705

1.25
1465
1540
1585
1670
1750

1.5
1550
1595
1680
1755
1800

EXHAUST
Barometric Hood, 2" Pleated Filters (3HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
N/A
N/A
1025
1170
1270
N/A
1020
1155
1240
1330
1015
1150
1235
1325
1380
1140
1285
1365
1420
1510
1280
1345
1455
1540
1575

1.25
1355
1390
1475
1595
1670

1.5
1400
1490
1590
1640
1745

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

RPM Range
Low
950-1320 Standard Unit
Medium 1325-1565 Optional Kit
High
1570-1880 Optional Kit

Blower RPM for S036

CFM
2000
2400
2800
3200
3600

CFM
2000
2400
2800
3200
3600

SUPPLY
Mist Eliminator Filter in Intake Hood (3HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
815
925
1020
1105
1155
920
1060
1130
1215
1250
1010
1140
1240
1285
1370
1125
1235
1340
1385
1455
1225
1375
1440
1460
1500

1.25
1255
1355
1425
1465
N/A

1.5
1325
1385
1470
N/A
N/A

EXHAUST
Barometric Hood, 2" Pleated Filters (3HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
755
890
970
1060
1125
985
1035
1085
1140
1240
1020
1115
1175
1230
1270
1105
1200
1225
1285
1300
1155
1265
1295
1335
1385

1.25
1215
1275
1335
1390
N/A

1.5
1280
1325
1370
1430
N/A

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

38

Low
Medium
High

RPM Range
700-1025 Standard Unit
1030-1305 Optional Kit
1325-1575 Optional Kit

Unitary Products Group

903106-UTG-A-0912

TABLE 28: AIRFLOW PERFORMANCE - SIDE BY SIDE DUCT CONFIGURATION FOR S046 & S062

Blower RPM for S046

CFM
3000
3400
3800
4200
4600

CFM
3000
3400
3800
4200
4600

SUPPLY
Mist Eliminator Filter in Intake Hood (5HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
965
1085
1150
1230
1295
1035
1145
1250
1290
1335
1120
1245
1285
1315
1440
1215
1305
1355
1430
1465
1300
1375
1450
1460
1540

1.25
1345
1415
1470
1530
1590

1.5
1420
1475
1535
1595
1650

EXHAUST
Barometric Hood, 2" Pleated Filters (5HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
1010
1105
1195
1255
1300
1100
1190
1250
1320
1370
1185
1245
1360
1410
1440
1240
1355
1425
1465
1530
1345
1410
1485
1520
1585

1.25
1375
1410
1475
1590
1650

1.5
1415
1480
1540
1630
1700

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

RPM Range
Low
780-1020 Standard Unit
Medium 1000-1315 Optional Kit
High
1315-1700 Optional Kit

Blower RPM for S062

CFM
4600
5000
5400
5800
6200

CFM
4600
5000
5400
5800
6200

SUPPLY
Mist Eliminator Filter in Intake Hood (5HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
795
900
1030
1075
1160
855
920
1070
1130
1190
880
950
1095
1155
1245
915
1035
1115
1175
1255
985
1080
1135
1225
1265

1.25
1220
1250
1270
1280
N/A

1.5
1255
1275
1290
N/A
N/A

EXHAUST
Barometric Hood, 2" Pleated Filters (5HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
705
885
985
1045
1100
825
950
1025
1095
1150
875
980
1080
1140
1190
935
995
1130
1180
1230
985
1095
1165
N/A
N/A

1.25
1155
1210
1240
N/A
N/A

1.5
1215
1245
1275
N/A
N/A

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

Unitary Products Group

Low
Medium
High

RPM Range
700-900
Standard Unit
900-1100 Optional Kit
1100-1300 Optional Kit

39

903106-UTG-A-0912

O SERIES STAND ALONE ERV'S FOR OVER AND UNDER DUCT ARRANGEMENTS
FEATURES AND NOTES
1.

Stand alone design allows higher levels of outdoor air to
be introduced into the conditioned space.
Static test ports provided to verify intake and exhaust
CFM.
Balancing damper(s) is field provided when connected to
ductwork. System may not operate properly without balancing damper.
Roof curbs are available for the ERV's.
See blower performance charts for airflow at various
E.S.P.
Filter rack with 2" pleated filters included. Found in return
air section.

2.
3.

4.
5.
6.

ERV Roof Curbs
Series
Model No
O011
01-2O1-2514
O020
01-2D1-3014
O028
01-2O1-3614
O036
01-2D1-4114
O046
01-2D1-4614
O062
01-2O1-5214

ERV with Horizontal Ductwork
(balancing damper(s) field supplied)

A

J

B
A
C

F

C

D
G

D
14

I
H

L

E
B

K

H

ERV Data
ERV Series CFM Range
O011
300-1100
O020
1200-2000
O028
1200-2800
O036
2000-3600
O046
3000-4600
O062
4600-6200

40

A
56.75
54.38
60.00
60.00
60.00
72.00

B
32.13
37.25
42.63
46.69
52.69
70.88

C
39.50
37.50
43.56
57.37
57.37
63.63

D
11.00
12.00
14.00
16.50
16.50
19.50

Dimensional Data
E
F
G
H
27.00 6.50 10.00 2.56
30.00 8.00
4.00
3.63
32.00 9.56
4.50
5.31
39.50 12.13 6.38
3.59
39.50 12.13 6.38
6.59
39.50 12.13 6.50 15.69

I
1.00
1.50
1.50
5.88
5.88
5.88

J
11.00
20.32
18.32
18.32
18.32
18.32

K
55.00
52.75
49.50
55.75
55.75
67.75

L
30.25
35.50
41.00
41.81
47.81
66.00

Unitary Products Group

903106-UTG-A-0912

TABLE 29: AIRFLOW PERFORMANCE - DOWNFLOW CONFIGURATION FOR O011 & O020

Blower RPM for O011

CFM
300
500
700
900
1100

CFM
300
500
700
900
1100

SUPPLY
Mist Eliminator Filter in Intake Hood (1.5HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
N/A
N/A
1175
1350
1450
N/A
1170
1340
1540
1655
1295
1425
1600
1625
1795
1540
1660
1720
1790
2030
1785
1915
2025
2185
N/A

1.25
1605
1725
1960
2110
N/A

1.5
1730
1840
2035
2195
N/A

EXHAUST
Barometric Hood, 2" Pleated Filters (1.5HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
N/A
N/A
1030
1225
N/A
N/A
1025
1180
1265
1425
1120
1190
1340
1445
1540
1285
1525
1500
1575
1670
1570
1665
1670
1775
1860

1.25
N/A
1535
1645
1785
1920

1.5
N/A
N/A
1720
1865
N/A

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

RPM Range
Low
1000-1300 Standard Unit
Medium 1300-1700 Optional Kit
High
1750-2200 Optional Kit

Blower RPM for O020

CFM
1200
1400
1600
1800
2000

CFM
1200
1400
1600
1800
2000

SUPPLY
Mist Eliminator Filter in Intake Hood (2HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
1055
1135
1295
1420
1540
1140
1240
1340
1490
1600
1200
1330
1460
1565
1645
1320
1405
1525
1615
1705
1415
1515
1605
1690
1775

1.25
1650
1690
1740
1785
1875

1.5
1725
1795
1830
1885
1960

EXHAUST
Barometric Hood, 2" Pleated Filters (2HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
1010
1195
1350
1445
1580
1125
1315
1435
1545
1620
1185
1370
1500
1610
1695
1305
1485
1600
1685
1781
1410
1550
1670
1765
1855

1.25
1685
1730
1790
1955
N/A

1.5
1735
1800
1965
2030
N/A

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

Unitary Products Group

Low
Medium
High

RPM Range
1000-1300 Standard Unit
1300-1700 Optional Kit
1700-2080 Optional Kit

41

903106-UTG-A-0912

TABLE 30: AIRFLOW PERFORMANCE - DOWNFLOW CONFIGURATION FOR O028 & O036

Blower RPM for O028

CFM
1200
1600
2000
2400
2800

CFM
1200
1600
2000
2400
2800

SUPPLY
Mist Eliminator Filter in Intake Hood (3HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
N/A
790
960
1110
1210
750
900
1005
1145
1230
900
1005
1105
1210
1275
1005
1125
1210
1275
1365
1125
1230
1315
1380
1450

1.25
1315
1365
1400
1450
1535

1.5
1380
1410
1450
1500
1600

EXHAUST
Barometric Hood, 2" Pleated Filters (3HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
750
885
1015
1145
1260
870
1015
1125
1215
1325
1015
1145
1240
1345
1410
1125
1250
1345
1430
1500
1250
1410
1485
1520
1630

1.25
1350
1410
1485
1575
1650

1.5
1485
1500
1560
1630
1675

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

Low
Medium
High

RPM Range
725-975
Standard Unit
1008-1314 Optional Kit
13115-1708 Optional Kit

Blower RPM for O036

CFM
2000
2400
2800
3200
3600

CFM
2000
2400
2800
3200
3600

SUPPLY
Mist Eliminator Filter in Intake Hood (3HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
725
825
900
1000
800
900
1000
1070
900
1000
1070
1160
1000
1070
1160
1250
1055
1180
1250
1300

EXHAUST
Barometric Hood, 2" Pleated Filters (3HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
750
865
950
1030
1100
820
950
1035
1100
1200
925
1035
1150
1200
1265
1035
1160
1215
1265
1325
1100
1215
1300
1350
1390

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

42

1
1070
1160
1250
1275
1360

Low
Medium
High

1.25
1180
1250
1275
1340
N/A

1.5
1250
1275
1340
1400
N/A

1.25
1200
1265
1315
1350
N/A

1.5
1265
1300
1350
1390
N/A

RPM Range
725-975
Standard Unit
1000-1315 Optional Kit
1215-1425 Optional Kit

Unitary Products Group

903106-UTG-A-0912

TABLE 31: AIRFLOW PERFORMANCE - DOWNFLOW CONFIGURATION FOR O046 & O062

Blower RPM for O046

CFM
3000
3400
3800
4200
4600

CFM
3000
3400
3800
4200
4600

SUPPLY
Mist Eliminator Filter in Intake Hood (5HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
900
1030
1100
1165
1240
975
1085
1175
1240
1290
1070
1175
1240
1290
1350
1165
1240
1320
1350
1430
1240
1320
1375
1430
1500

1.25
1285
1350
1400
1465
1515

1.5
1350
1400
1465
1515
1580

EXHAUST
Barometric Hood, 2" Pleated Filters (5HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
955
1100
1160
1245
1280
1055
1185
1245
1300
1375
1160
1300
1360
1400
1425
1245
1375
1450
1480
1500
1360
1450
1500
1585
1600

1.25
1360
1425
1530
1585
1650

1.5
1425
1480
1585
1650
1700

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

RPM Range
Low
780-1020 Standard Unit
Medium 1000-1315 Optional Kit
High
1315-1700 Optional Kit

Blower RPM for O062

CFM
4600
5000
5400
5800
6200

CFM
4600
5000
5400
5800
6200

SUPPLY
Mist Eliminator Filter in Intake Hood (5HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
815
900
975
1045
1085
880
940
1015
1060
1135
915
975
1045
1125
1150
975
1045
1085
1175
1250
1000
1075
1165
1200
N/A

1.25
1125
1175
1195
1260
N/A

1.5
1175
1215
1250
N/A
N/A

EXHAUST
Barometric Hood, 2" Pleated Filters (5HP)
External Static Pressure (in water)
0
0.25
0.5
0.75
1
825
915
1000
1025
1100
890
975
1025
1100
1140
925
1000
1085
1140
1170
975
1025
1140
1170
1240
1025
1120
1170
N/A
N/A

1.25
1140
1170
1240
N/A
N/A

1.5
1170
1240
1280
N/A
N/A

Notes:
1. Drive losses included in the above table
2. Performance can vary depending on ambient conditions
3. Blower RPMs are for reference only

Unitary Products Group

RPM Range
Low
820-1000 Standard Unit
Medium 1000-1200 Optional Kit
High
11751375 Optional Kit

43

903106-UTG-A-0912

GUIDE SPECIFICATIONS
Prepared for the guidance of architects, consulting engineers, and mechanical contractors.

GENERAL
Furnish and install _____________ mechanical cooling system, complete with a Unitized Energy Recovery Ventilator
(UERV).

APPROVALS
The Unitized Energy Recovery Ventilator will contain an
energy recovery component rated in accordance with AHRI/
ANSI Standard 1060-2005 with ratings certified by AHRI.
Cabinet
UERV shall be designed to attach directly to the a/c (rooftop,
upflow, horizontal) unit. It shall be G90 galvanized material
with a powdered enamel paint finish electrostatically bonded
to the metal. Cabinet panels where conditioned air is handled
shall be fully insulated to prevent sweating and minimize
sound. Openings shall be provided for power connections.
Lifting devices will be provided for rigging. Test ports shall be
provided so airflow can be measured across the energy
recovery wheel.
Intake Air Blower (direct drive)
UERV shall contain a centrifugal blower. All UERV's will be
equipped with direct drive PSC blower motors. The motor will
be multiple speed and will be individually controlled. Airflow
will also be adjustable by means of a damper on the intake air
opening. Blowers and motors will be removable through
means of a connecting plug for ease of servicing.
Intake Air Blower (belt drive)
UERV shall contain a centrifugal blower. It shall have ball
bearings and adjustable belt drive. Motor mount base shall
permit ease of motor changeover and belt tension adjustment. On pivoting wheel models, supply blower will be deenergized during economizer operation. (Except for VR074
and VR122.)
Exhaust Air Blower (direct drive)
UERV shall contain a centrifugal blower. All UERV's will be
equipped with direct drive PSC blower motors. The motor will
be multiple speed and shall be individually controlled. Blowers and motors will be removable through means of a connecting plug for ease of servicing. On pivoting wheel models,
blower shall be sized to provide power exhaust during economizer operation.
Exhaust Air Blower (belt drive)
UERV shall contain a centrifugal blower. It shall have ball
bearings and adjustable belt drive. Motor mount base shall

44

permit ease of motor changeover and belt tension adjustment. On pivoting wheel models, exhaust blowers shall be
sized to provide power exhaust during economizer operation.
Where single blowers cannot provide adequate exhaust, two
blowers will be utilized. One blower is energized during
energy recovery mode, and both blowers are energized
during economizer mode.
Energy Recovery Wheel
The energy recovery device shall be a rotary heat exchanger
per AHRI Standard 1060 description. The device will be an
enthalpy wheel coated with a silica gel desiccant by a patented process without the use of binders or adhesives which
may plug the desiccant aperture. The substrate shall be a
lightweight polymer. Desiccant shall not dissolve or deliquesce in the presence of water or high humidity. The wheel
shall be easily cleanable with standard coil cleaning solution.
On UERV's Series 20 and less, the wheel will easily be
removable from the cabinet for cleaning. On UERV's Series
20 and above, the wheel will be provided with removable segments for cleaning and maintenance. All diameter and perimeter seals shall be provided. The energy recovery cassette
shall be Underwriters Laboratories Recognized Component
for electrical and fire safety.
Balancing Dampers
Balancing dampers will be provided for all VR UERV’s. These
dampers will be mounted inside the rooftop air conditioning
unit to adjust for the amount of exhaust air on packaged units.
On pivoting wheel models, the unit economizer becomes the
balancing damper. Upflow and horizontal ERVs' will have the
balancing damper provided in the ERV. Optional on VO and
VS UERV’s when connected to rooftop units. (Except for
VR074 and VR122.)
Barometric Relief Dampers
Barometric relief dampers will be provided in the exhaust air
hood to prevent air infiltration when the UERV is de-energized.
ERV Support
All UERV's will be provided with support legs attached to the
cabinet to support the intake and exhaust end of the ERV
unit. Horizontal ERV's will be provided with support brackets
for hanging.
Filters
All units shall be provided with mist eliminator type filters in
the intake air hood.
Power Connection
The UERV shall be provided with a single point power connection for high voltage.

Unitary Products Group

903106-UTG-A-0912

OPTIONS

2.

The ERV is activated with the supply blower of the RTU.
The intake blower, the exhaust blower, and the wheel
rotation motor of the ERV are activated. These motors
will remain energized as long as the supply blower on
the RTU is energized and the RTU is in standard (noneconomizer) mode.

3.

If the optional motorized fresh air damper in the outside
air intake of the ERV is present, it opens and the ERV is
energized.

4.

If the optional low ambient kit is present, and the temperature leaving the exhaust side of the wheel drops
below the field adjusted set point on the temperature
sensor of the low ambient kit, the optional motorized
fresh air damper will close and the intake blower will deenergize. The exhaust air blower and wheel rotation
motor will continue to operate. When the temperature
sensor has a sixteen-degree rise, the wheel is defrosted
and the optional motorized damper will open and the
fresh air blower will reactivate.

Optional UERV Equipment Support
Furnish and install the optional equipment support for the
intake and exhaust end of the unit.
Optional Roof Curb
Furnish and install the optional roof mounting frame to maintain proper height above the roof.
Optional Low Ambient Kit
Furnish and install the optional low ambient kit to prevent
frost formation on the energy recovery wheel.
Optional Motorized Intake Air Damper
Furnish and install the optional motorized intake air damper.
Optional Stop-Start-Jog
On units without economizers furnish and install the optional
stop-start-jog controls.

Pivoting Models - Economizer Operation

SEQUENCE OF OPERATION:

1.

The space thermostat sends a signal to the RTU for cooling operation.

Fixed Models - Normal Operation

2.

The outdoor air sensor for the RTU senses the outdoor
air and determines it is appropriate for economizer operation.

3.

As the economizer outside air dampers open, the ERV
economizer end switch is activated sending a signal to
the ERV that the system is in the economizer mode.

4.

The intake blower, the exhaust blower and the wheel
rotation motor all deactivate for up to two minutes. The
optional motorized fresh air damper (if present) also
closes.

5.

The ERV enthalpy wheel pivots out of the air stream and
the bypass dampers along each side of the intake blower
open.

6.

After a time delay to allow the wheel to pivot out of the
airstream and the bypass dampers to open, the optional
motorized fresh air damper opens to allow for full economizer operation, and the exhaust blower is reactivated to
provide power exhaust for the system.

1.

The space thermostat sends a signal to the RTU for cooling, heating or fan only operation.

2.

The ERV is activated simultaneously with the supply
blower of the RTU. The intake blower, the exhaust
blower, and the wheel rotation motor of the ERV are activated. These motors will remain energized as long as
the supply blower on the RTU is energized. The RTU is
in standard (non-economizer) mode.

3.

4.

If the optional motorized fresh air damper in the outside
air intake of the ERV is present, it opens and the ERV is
energized.
If the optional low ambient kit is present, and the temperature leaving the exhaust side of the wheel drops
below the field adjusted set point on the temperature
sensor of the low ambient kit, the optional motorized
fresh air damper will close and the intake blower will deenergize. The exhaust air blower and wheel rotation
motor will continue to operate. When the temperature
sensor has a sixteen-degree rise, the wheel is defrosted
and the optional motorized damper will open and the
fresh air blower will reactivate.

Pivoting Models - Normal Operation
1.

The space thermostat sends a signal to the RTU for cooling, heating or fan only operation.

Unitary Products Group

45

903106-UTG-A-0912

UERV TROUBLESHOOTING GUIDE
UERV BELOW 600 CFM WITH STATIONARY WHEEL
(NO ECONOMIZER)

4.

If all of the above are operational, the exhaust motor is
bad. Replace it with new motor.

UERV will not operate.

UERV has power, but the fresh air blower does not
operate.

1.

1.

Verify the A130 circuit board switch SW1 Power is in the
"on" position.

2.

Verify the A130 circuit board terminals Fresh "1” and "3"
if in high speed operation, or "1” and "2" if in low speed
operation are outputting 110 volts to B27 fresh air blower
motor though J/P148 plug assembly.

3.

On units equipped with the optional low ambient control,
verify that the A130 circuit board TB3 terminals marked
"low ambient" are closed. The low ambient control will
stop the fresh air motor operation and close the optional
outside air damper if it senses conditions for frost on the
UERV wheel. The "low ambient" terminals can be
jumped together to verify if the low ambient control has
the fresh air blower stopped.

4.

Verify B27 wheel motor C26 capacitor is good. Replace
the capacitor if it is bad.

5.

If all of the above are operational, the fresh air motor is
bad. Replace it with new motor.

Quick check items.
a.

2.

Verify S51 door switch is closed. The switch must be
in the closed position to power the A130 circuit
board.

b.

Verify the A130 circuit board switch SW1 Power is in
the “on” position.

c.

Verify 24 volts to A130 circuit board terminals TB1
“G” and “C” if in the cooling mode, or “W” and “C” if
in the heating mode. The terminals must be powered to allow any blower relays / contactors to operate.

Verify high voltage power to UERV.
a.

Verify 110 volts for UERV to L1 and L2 on TB2 on
the A130 board.

b.

Verify the F1 fuse is good. Replace any bad fuses.

c.

Verify that the T28 step down transformer on 208,
230, and 460 volt units have the voltage correctly
applied to the correct transformer terminals.

UERV has power, but the enthalpy wheel does not spin.

UERV has power, but the optional motorized fresh air
damper does not open.
1.

Verify 24 volts to A130 circuit board terminals TB1 "G"
and "C" if in the cooling mode, or "W" and "C" if in the
heating mode.

2.

Verify the A130 circuit board terminals Wheel "1" and "2"
are outputting 110 volts to B28 wheel motor through J/
P150 plug assembly.

Verify the A130 circuit board switch SW1 Power is in the
"on" position.

3.

Verify 24 volts to B30 motorized outdoor air motor
through J/P160 plug assembly.

4.

Verify B28 wheel motor C23 capacitor is good. Replace
the capacitor if it is bad.

4.

If all of the above are operational, replace the outdoor air
damper motor.

5.

If the optional Stop, Start, Jog (SSJ) feature is installed,
verify that the temperature setpoint on the SSJ does not
have the wheel stopped.

UERV ABOVE 600 CFM WITH STATIONARY WHEEL
(NO ECONOMIZER)

If all of the above are operational, the wheel motor is
bad. Replace it with new motor.

UERV will not operate.

1.

Check wheel belt is in place and tight.

2.

Verify the A130 circuit board switch SW1 Power is in the
"on" position.

3.

6.

UERV has power, but the exhaust blower does not
operate.
1.

Verify the A130 circuit board switch SW1 Power is in the
"on" position.

2.

Verify the A130 circuit board terminals Exhaust "1” and
"3” if in high speed operation, or "1” and "2" if in low
speed operation are outputting 110 volts to B26 exhaust
blower motor though J/P151 plug assembly.

3.

46

Verify B26 wheel motor C25 capacitor is good. Replace
the capacitor if it is bad.

1.

Quick check items.
a.

Verify S51 door switch is closed. The switch must be
in the closed position to power the A130 circuit
board.

b.

Verify 24 volts to A130 circuit board terminals
XFORMER "+" and "-". The terminals must be powered to allow blower contactors to operate.

c.

Verify 24 volts to A130 circuit board terminals TB 37
numbers "1" and "3". Terminal "1" is the hot and "3"
is the common side of the power source from activation power source (a/c unit, energy management
Unitary Products Group

903106-UTG-A-0912
control, etc.). Typically, "1" would be from the blower
contactor on an a/c unit.
2.

Verify high voltage power to UERV.
a.
b.

tactor terminal "A" and "B", and that the contacts are
closed.
3.

Check for correct voltage for UERV to L1 and L2 on
1-phase units.

Verify power to B27 fresh air blower motor though J/
P148 plug assembly.

4.

Check for correct voltage for UERV to L1, L2, and
L3 on 3-phase units.

On direct drive models, verify B27 wheel motor C26
capacitor is good. Replace if necessary.

5.

On units equipped with the optional low ambient control,
verify that the circuit on the A130 circuit board terminal
"5" and "6" is closed. The low ambient control will stop
the fresh air motor operation and close the optional outside air damper if it senses frost on the UERV wheel.
Terminal "5" and "6" can be jumped together to verify if
the low ambient control has the fresh air blower stopped.

6.

If all of the above are operational, the fresh air motor is
bad. Replace it with new motor.

c.

Verify the F29 fuses are good. Replace any bad
fuses.

d.

Verify that the T27 transformer has the UERV voltage correctly applied to the correct transformer terminals.

UERV has power, but the enthalpy wheel does not spin.
1.

Check wheel belt is in place and tight.

2.

Verify the A130 circuit board terminals Exhaust "A" (hot)
and "B" (common) are outputting 24 volts to K163 contactor terminal "A" and "B" and that the contacts are
closed.

UERV has power, but the optional motorized fresh air
damper does not open.
1.

Verify 24 volts to the A130 circuit board terminals
XFORMER "+" and "-".

2.

Verify 24 volts to A130 circuit board terminals TB 37
numbers "1" and "3". Terminal "1" is the hot and "3" is the
common side of the power source from activation power
source (a/c unit, energy management control, etc.). Typically, "1" would be from the blower contactor on an a/c
unit.

3.

Verify power to B28 wheel motor.

4.

Verify B28 wheel motor C23 capacitor is good. Replace
the capacitor if it is bad. (Except VR074 to VR122)

5.

If the optional Stop, Start, Jog (SSJ) feature is installed,
verify that the timer on the SSJ does not have the wheel
stopped.

3.

If all of the above are operational, the wheel motor is
bad. Replace it with new motor.

Verify 24 volts to B30 motorized outdoor air motor
through J/P160 plug assembly.

4.

If all of the above are operational, replace the outdoor air
damper motor.

6.

UERV has power, but the exhaust blower does not
operate.
1.

2.

Check that the blower belt is in place and tight on belt
drive models. If it is loose, tighten it. If it is broken replace
it.
Verify the A130 circuit board terminals Exhaust "A" (hot)
and "B" (common) are outputting 24 volts to K163 contactor terminal "A" and "B", and that the contacts are
closed.

3.

Verify power to B26 exhaust blower motor.

4.

On direct drive models, verify B26 wheel motor C25
capacitor is good. Replace if necessary.

5.

If all of the above are operational, the exhaust motor is
bad. Replace it with new motor.

UERV ABOVE 600 CFM WITH PIVOTING WHEEL
(USED WITH ECONOMIZER)
UERV will not operate.
1.

Quick check items.
a.

Verify S51 door switch is closed. The switch must be
in the closed position to power the A130 circuit
board.

b.

Verify 24 volts to A130 circuit board terminals
XFORMER "+" and "-". The terminals must be powered to allow any blower relays / contactors to operate.

c.

Verify 24 volts to A130 circuit board terminals TB 37
numbers "1" and "3". Terminal "1" is the hot and "3"
is the common side of the power source from activation power source (a/c unit, energy management
control, etc.). Typically, "1" would be from the blower
contactor on an a/c unit.

UERV has power, but the fresh air blower does not
operate.
1.

2.

Check that the blower belt is in place and tight on belt
drive models. Tighten it if it is loose. Replace it if it is broken.
Verify the A130 circuit board terminals Fresh "A" (hot)
and "B" (common) are outputting 24 volts to K164 con-

Unitary Products Group

2.

Verify high voltage power to UERV.
a.

Check correct voltage for UERV to L1 and, L2 on 1phase units.
47

b.

Check for correct voltage to L1, L2, and L3 on 3phase units.

c.

Verify the F29 fuses are good. Replace any bad
fuses.

c.

Verify power to B27 fresh air blower motor though J/
P148 plug assembly.

d.

Verify that the T27 transformer has the UERV voltage correctly applied to the correct transformer terminals.

d.

On units equipped with the optional low ambient
control, verify that the circuit on the A130 circuit
board terminal "5" and "6" is made. The low ambient
control will stop the fresh air motor operation and
close the optional outside air damper if it senses
frost on the UERV wheel. Terminal "5" and "6" can
be jumped together to verify if the low ambient control has the fresh air blower stopped.

e.

On direct drive models, verify B27 wheel motor C26
capacitor is good. Replace if necessary.

f.

If all of the above are operational, the fresh air motor
is bad. Replace it with new motor.

K164 contactor terminal "A" and "B", and that the
contacts are closed.

UERV has power, but the enthalpy wheel does not spin.
1.

Check wheel belt is in place and tight.

2.

Verify the A130 circuit board terminals Exhaust 1 "A"
(hot) and "B" (common) are outputting 24 volts to K163
contactor terminal "A" and "B" and that the contacts are
closed.

3.

Verify power to B28 wheel motor through J/P150 plug
assembly.
a.

If there is no power on the T1 leg of the motor (pivoting models only) verify that the S110 switch located
inside the B29 damper motor is in the closed position.

4.

Verify B28 wheel motor C23 capacitor is good. Replace
the capacitor if it is bad.

5.

If all of the above are operational, the wheel motor is
bad. Replace it with new motor.

UERV has power, but the exhaust blower does not
operate.
1.

Check that the blower belt is in place and tight. If it is
loose, tighten it. If it is broken replace it.

2.

Verify the A130 circuit board terminals Exhaust 1 "A"
(hot) and "B" (common) are outputting 24 volts to K163
contactor terminal "A" and "B", and that the contacts are
closed.

3.

Verify power to B26 exhaust blower motor though J/P151
plug assembly.

4.

On direct drive models, verify B26 wheel motor C25
capacitor is good. Replace if necessary.

5.

If all of the above are operational, the exhaust motor is
bad. Replace it with new motor.

2.

a.

1.

Check the linkage from the B29 damper motor to the
UERV wheel.

2.

Verify shipping retainers are removed.

3.

Verify the S122 economizer end switch is closed. The
switch is located on the damper and closes when the
damper moves from minimum position to the economizer
position (field adjustable).

4.

Verify the B29 damper motor has 24 volts to terminals
"B" and "T1" through J/P160 plug assembly

5.

If all of the above are operational, replace the damper
motor.

UERV has power, but the optional motorized fresh air
damper does not open.
1.

Verify 24 volts to the A130 circuit board terminals
XFORMER "+" and "-".

2.

Check that the blower belt is in place and tight on
belt drive models. Tighten it if it is loose. Replace it if
it is broken.

Verify 24 volts to A130 circuit board terminals TB 37
numbers "1" and "3". Terminal "1" is the "hot" and "3" is
the "common" side of the power source from activation
power source (a/c unit, energy management control,
etc.). Typically, "1" would be from the blower contactor
on an a/c unit.

3.

Verify 24 volts to B30 motorized outdoor air motor
through J/P160 plug assembly.

Verify the A130 circuit board terminals Fresh "A"
(hot) and "B" (common) are outputting 24 volts to

4.

If all of the above are operational, replace the outdoor air
damper motor.

Energy Recovery Mode of operation.
a.

b.

The fresh air blower is not operational in the economizer mode.

UERV has power, but the wheel does not rotate out of
airstream during economizer operation.

UERV has power, but the fresh air blower does not
operate.
1.

Economizer Mode of operation.

Subject to change without notice. Printed in U.S.A.
Copyright © January 24, 2013 by Johnson Controls, Inc. All rights reserved.
Johnson Controls Unitary Products
5005 York Drive
Norman, OK 73069

903106-UTG-A-0912
Supersedes: 246681-YTG-C-0611



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File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.6
Linearized                      : Yes
Create Date                     : 2000:05:02 11:22:59Z
Creator                         : FrameMaker 11.0.1
Modify Date                     : 2013:01:24 11:30:39-06:00
Language                        : en
XMP Toolkit                     : Adobe XMP Core 5.3-c011 66.145661, 2012/02/06-14:56:27
Creator Tool                    : FrameMaker 11.0.1
Metadata Date                   : 2013:01:24 11:30:39-06:00
Format                          : application/pdf
Title                           : untitled
Producer                        : Acrobat Distiller 11.0 (Windows)
Document ID                     : uuid:74082c9e-5ee5-4e88-aa57-eb9d4fd8f7b0
Instance ID                     : uuid:88969377-aae0-48eb-83f1-34cabda419c6
Page Mode                       : UseOutlines
Page Count                      : 48

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