Bard ERV-FA2, ERV-FC2, ERV-FA3, ERV-FC3 Installation Instructions Manual
INSTALLATION INSTRUCTIONS
Wall Mount Energy Recovery Ventilator
with Exhaust
Models:
ERV-FA2 ERV-FC2
ERV-FA3 ERV-FC3
For Use with Bard 1.5 – 3 Ton
Wall Mount Air Conditioners and Heat Pumps
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
Manual: 2100-701
Supersedes: NEW
Date: 3-1-19
Page 1 of 16
CONTENTS
Model Nomenclature .............................................. 3
Electrical Specifications ......................................... 3
General Description .............................................. 3
General Information .............................................. 3
Unpacking ............................................................ 3
Performance and Application Data – WERVP*2 ........ 4
Performance and Application Data – WERVP*3 ........ 5
Basic Field Installation ........................................... 6
Control Wiring ..................................................... 11
Ventilation Airflow ................................................ 11
Energy Recovery Ventilator Maintenance ................ 14
Figures
Figure 1 Remove Access Panels ........................ 6
Figure 2 Remove Filter, Filter Support Bracket
and Exhaust Cover Plate and Install
Exhaust Damper Assembly ................... 7
Figure 3 Install Ventilator ................................. 8
Figure 4 Install Low and High Voltage Plugs
and Wiring .......................................... 9
Figure 5
Figure 6 Speed Tap Label ............................... 12
Figure 7 Airflow Diagram ................................ 13
Figure 8 Belt Replacement Instructions ........... 15
Figure 9 Hub Assembly with Ball Bearings ....... 16
Tables
Table 1 Model Reference ................................. 6
Table 2 Ventilation Air ................................... 11
Install Fresh Air Intake Hood Assembly
. 10
Manual 2100-701
Page 2 of 16
WALL MOUNT ENERGY RECOVERY VENTILATOR MODEL NOMENCLATURE
Energy Recovery Ventilator
Fixed (24V ON/OFF)
A – 230/208 volt
C – 460 volt
ERV F – A 3
Electrical
ELECTRICAL SPECIFICATIONS
Model Voltage Amps
ERV-FA2
ERV-FA3
ERV-FC2
ERV-FC3
230/208 2.2 24V
460 1.2 24V
Control
Voltage
GENERAL DESCRIPTION
The energy recovery ventilator was designed to provide
energy efficient, cost effective ventilation to meet IAQ
(Indoor Air Quality) requirements while still maintaining
good indoor comfort and humidity control for a variety
of applications such as schools, classrooms, lounges,
conference rooms, beauty salons and others. It provides
a constant supply of fresh air for control of airborne
pollutants including CO
excess moisture, virus and bacteria.
The ventilator incorporates patented rotary heat
exchanger technology to remove both heat and moisture.
It is designed as a single package which can be easily
factory or field installed for new installations or retrofit
to the new Bard W**A and W**H series wall-mounted
units. The package consists of a unique rotary energy
recovery cassette that can be easily removed for
cleaning or maintenance. The ERV-F*3 has two 13"
diameter heat transfer wheels whereas the ERV-F*2 has
one 13" diameter heat transfer wheel. The heat transfer
wheels use a permanently bonded dry desiccant
coating for total heat recovery.
Ventilation is accomplished with two blower/motor
assemblies each consisting of a drive motor and dual
blowers for maximum ventilation at low sound levels.
The intake and exhaust blowers can be operated at the
same speed (airflow rate) or different speeds to allow
flexibility in maintaining desired building pressurization
conditions. Factory shipped on medium intake and low
exhaust. See Figure 6 on page 12 to change speeds.
, smoke, radon, formaldehyde,
2
Wall Mount Cabinet Size
2 – W18 thru W24A* and H*
3 – W30 thru W36A* and H*
(* revision letter)
The rotating energy wheels provide the heat transfer
effectively during both summer and winter conditions.
Provide required ventilation to meet the requirements
of ASHRAE 62.1 standard.
NOTE: During operation below 5°F outdoor
temperature, freezing of moisture in the heat
transfer wheel can occur. Consult the factory if
this possibility exists.
GENERAL INFORMATION
The ventilator should only be installed by a trained
heating and air conditioning technician. These
instructions serve as a guide to the technician installing
the ventilator package. They are not intended as a stepby-step procedure with which the mechanically inclined
owner can install the package.
The ventilator housing is shipped in one carton which
contains the following:
• Energy recovery ventilator
• Exhaust damper assembly
• Service door
• Rain hood and mist eliminator
• Installation instructions
UNPACKING
Upon receipt of the equipment, be sure to compare the
model number found on the shipping label with the
accessory identification information on the ordering and
shipping document to verify that the correct accessory
has been shipped.
Inspect the carton housing of each ventilator as it is
received and, before signing the freight bill, verify that
all items have been received and that there is no visible
damage. Note any shortages or damage on all copies
of the freight bill. The receiving party must contact
the last carrier immediately, preferably in writing,
requesting inspection by the carrier’s agent. Concealed
damage not discovered until after loading must be
reported to the carrier within 15 days of its receipt.
Manual 2100-701
Page 3 of 16
PERFORMANCE AND APPLICATION DATA – ERV-F*2
Summer Cooling Performance
(Indoor Design Conditions 75°DB/62°WB)
Ambient
OD
DB/
F VLT VLS VLL HRT HRS HRL V LT VLS VLL HRT HRS HRL V LT VLS VLL HRT HRS HRL
WB
1057570
100
95
90
85
80
757065
11925
8100
65
8100
80
17550
75
11925
70
6863
65
6750
60
6750
80
17550
75
11925
70
6863
65
5400
60
5400
80
17550
75
11925
70
6863
65
4050
60
4050
80
17550
75
11925
70
6683
65
2700
60
2700
75
11925
70
6863
65
2363
60
1350
6863
2363
60
Ventilation Rate 250 CFM
8100
8100
8100
6750
6750
6750
6750
6750
5400
5400
5400
5400
5400
4050
4050
4050
4050
4050
2700
2700
2700
2700
2700
1350
1350
1350
1350
0
0
0
0
62% Efficiency
1325
79394
0
5022
0
5022
10800
10881
5175
7394
113
4255
0
4185
0
4185
12150
10881
6525
7394
1463
4255
0
3348
0
3348
13500
10881
7875
7394
2813
4255
0
2511
0
2511
14850
10881
9225
7394
4163
4255
0
1674
0
1674
10575
7394
5513
4255
1013
1465
0
837
6863
4255
2363
1465
0
Ventilation Rate 225 CFM
63% Efficiency
2168
822
10727
7287
3441
6758
5022
5022
5022
4185
4185
4185
4185
4185
3348
3348
3348
3348
3348
2511
2511
2511
2511
2511
1674
1674
1674
1674
1674
0
837
837
837
837
0
7287
7287
15788
10727
6173
6072
6072
15788
10727
6173
4858
4858
15788
10727
6173
3643
3643
15788
10727
6173
2429
2429
10727
6173
2125
1214
6173
2125
0
7287
7287
6072
6072
6072
6072
6072
4858
4858
4858
4858
4858
3643
3643
3643
3643
3643
2429
2429
2429
2429
2429
1214
1214
1214
1214
0
6696
3209
70
0
0
7533
4046
907
0
0
8370
4883
1744
0
0
9207
5720
2581
0
0
6557
3418
628
0
4255
0
1465
0
0
0
0
0
9716
4655
101
0
0
10930
5870
1315
0
0
12145
7084
2530
0
0
13359
8298
3744
0
0
9513
4959
911
0
0
6173
0
2125
0
0
4591
4591
9946
6758
3889
3826
3826
9946
6758
3889
3060
3060
9946
6758
3889
2295
2295
9946
6758
3889
1530
1530
6758
3889
1339
765
6889
1339
0
4591
4591
4591
3826
3826
3826
3826
3826
3060
3060
3060
3060
3060
2295
2295
2295
2295
2295
1530
1530
1530
1530
1530
765
765
765
765
0
0
0
0
0
6121
2933
64
0
0
6886
3698
829
0
0
7651
4463
1594
0
0
8416
5228
2359
0
0
5993
3124
574
0
6889
1339
0
9540
6480
6480
14040
9540
5490
5400
5400
14040
9540
5490
4320
4320
14040
9540
5490
3240
3240
14040
9540
5490
2160
2160
9540
5490
1890
1080
5490
1890
Ventilation Rate 200 CFM
6480
6480
6480
5400
5400
5400
5400
5400
4320
4320
4320
4320
4320
3240
3240
3240
3240
3240
2160
2160
2160
2160
2160
1080
1080
1080
1080
0
0
0
0
63% Efficiency
3060
6010
0
4082
0
4082
8640
8845
4140
6010
90
3458
0
3402
0
3402
9720
8845
5220
6010
1170
3458
0
2722
0
2722
10800
8845
6300
6010
2250
3458
0
2041
0
2041
11880
8845
7380
6010
3300
3458
0
1361
1361
0
8460
6010
4410
3458
810
1190
0
680
5490
3458
1890
1190
0
0
4082
4082
4082
3402
3402
3402
3402
3402
2722
2722
2722
2722
2722
2041
2041
2041
2041
2041
1361
1361
1361
1361
1361
680
680
680
680
0
0
0
1928
0
0
5443
2608
56
0
0
6124
3289
737
0
0
6804
3969
1417
0
0
7484
4649
2098
0
0
5330
2778
510
0
3458
1190
0
Winter Heating Performance
(Indoor Design Conditions 70°F DB)
Ambient
OD
DB/°F WVL WHR WVL WHR WVL WHR
65 1350 999 1214 911 1080 810
60 2700 1998 2429 1822 2160 1620
55 4050 2997 3643 2733 3240 2430
50 5400 3996 4858 3643 4320 3240
45 6750 4995 6072 4554 5400 4050
40 8100 5994 7287 5465 6480 4860
35 9450 6993 8501 6376 7560 5670
30 10800 7992 9716 7287 8640 6480
25 12150 8991 10930 8198 9720 7290
20 13500 9990 12145 9108 10800 8100
15 14850 10989 13359 10019 11880 8910
250 CFM 74% Eff. 225 CFM 75% Eff. 200 CFM 75% Eff.
Ventilation Rate
LEGEND:
VLT = Ventilation Load – Total
VLS = Ventilation Load – Sensible
VLL = Ventilation Load – Latent
HRT = Heat Recovery – Total
HRS = Heat Recovery – Sensible
HRL = Heat Recovery – Latent
WVL = Winter Ventilation Load
WHR = Winter Heat Recovery
NOTE: All performance data is based on
operating intake and exhaust blower on
the same speed.
Manual 2100-701
Page 4 of 16
PERFORMANCE AND APPLICATION DATA – ERV-F*3
Summer Cooling Performance
(Indoor Design Conditions 75°DB/62°WB)
Ambient
OD
DB/
F VLT VLS VLL HRT HRS HRL V LT VLS VLL HRT HRS HRL V LT VLS VLL HRT HRS HRL
WB
1057570
100
95
90
85
80
757065
19080
12960
65
12960
80
29080
75
19080
70
10980
65
10800
60
10800
80
28080
75
19080
70
10980
65
8640
60
8640
80
28080
75
19080
70
10980
65
6480
60
6480
80
28080
75
19080
70
10980
65
4320
60
4320
75
19080
70
10980
65
3780
60
2160
10980
3780
60
Ventilation Rate 400 CFM
12960
12960
12960
10800
10800
10800
10800
10800
8640
8640
8640
8640
8640
6480
6480
6480
6480
6480
4320
4320
4320
4320
4320
2160
2160
2160
2160
0
0
0
0
63% Efficiency
6120
12020
0
8164
0
8164
17280
17690
8280
12020
180
6717
0
6804
0
6804
19440
17690
10440
12020
2340
6917
0
5443
0
5443
21600
17690
12600
12020
4500
6917
0
4082
0
4082
23760
17690
14760
12020
6660
6917
0
2721
0
2721
16920
12020
8820
6917
1620
2381
0
1360
10980
6917
3780
2381
0
Ventilation Rate 325 CFM
64% Efficiency
3182
3855
15502
10530
4972
9921
8164
8164
8164
6804
6804
6804
6804
6804
5443
5443
5443
5443
5443
4082
4082
4082
4082
4082
2721
2721
2721
2721
2721
1360
1360
1360
1360
0
0
10530
10530
22815
15502
8921
8775
8775
22815
15502
8921
7020
7020
22815
15502
8921
5265
5265
22815
15502
8921
3510
3510
15502
8921
3071
1755
8921
3071
0
10530
10530
8775
8775
8775
8775
8775
7020
7020
7020
7020
7020
5265
5265
5265
5265
5265
3510
3510
3510
3510
3510
1755
1755
1755
1755
0
10886
5216
113
0
0
12247
6577
1474
0
0
13608
7938
2835
0
0
14968
9298
4195
0
0
10659
5556
1020
0
6917
0
2380
0
0
0
0
0
14040
6727
146
0
0
15795
8482
1901
0
0
17550
10237
3656
0
0
19305
11992
5411
0
0
13747
7166
1316
0
0
8921
0
3071
0
0
6739
6739
14601
9921
5709
5616
5616
14601
9921
5709
4492
4492
14601
9921
5709
3369
3369
14601
9921
5709
2246
2246
9921
5709
1965
1123
5709
1965
0
6739
6739
6739
5616
5616
5616
5616
5616
4492
4492
4492
4492
4492
3369
3369
3369
3369
3369
2246
2246
2246
2246
2246
1123
1123
1123
1123
0
0
0
0
0
8985
4305
93
0
0
10108
5428
1216
0
0
11232
6552
2340
0
0
12355
7675
3463
0
0
8798
4586
842
0
5709
1965
0
11925
8100
8100
17550
11925
6862
6750
6750
17550
11925
6862
5400
5400
17550
11925
6862
4050
4050
17550
11925
6862
2700
2700
11925
6862
2362
1350
6862
2362
Ventilation Rate 250 CFM
8100
8100
8100
6750
6750
6750
6750
6750
5400
5400
5400
5400
5400
4050
4050
4050
4050
4050
2700
2700
2700
2700
2700
1350
1350
1350
1350
0
0
0
0
65% Efficiency
3825
7751
0
5265
0
5265
10800
11407
5175
7751
112
4460
0
4387
0
4387
12150
11407
6525
7751
1462
4460
0
3510
0
3510
13500
11407
7875
7751
2812
4460
0
2632
0
2632
14850
11407
9225
7751
4162
4460
0
1755
1755
0
10575
7751
5512
4460
1012
1535
0
877
6862
4460
2362
1535
0
0
5265
5265
5265
4387
4387
4387
4387
4387
3510
3510
3510
3510
3510
2632
2632
2632
2632
2632
1755
1755
1755
1755
1755
877
877
877
877
0
0
0
2486
0
0
7019
3363
73
0
0
7897
4241
950
0
0
8774
5118
1828
0
0
9652
5996
2705
0
0
6873
3583
658
0
4460
1535
0
Winter Heating Performance
(Indoor Design Conditions 70°F DB)
Ambient
OD
DB/°F WVL WHR WVL WHR WVL WHR
65 2160 1620 1755 1333 1350 1039
60 4320 3240 3510 2667 2700 2079
55 6480 4860 5265 4001 4050 3118
50 8640 6480 7020 5335 5400 4158
45 10800 8100 8775 6669 6750 5197
40 12960 9720 10530 8002 8100 6237
35 15120 11340 12285 9336 9450 7276
30 17280 12960 14040 10670 10800 8316
25 19440 14580 15795 12004 12150 9355
20 21600 16200 17550 13338 13500 10395
15 23760 17820 19305 14671 14850 11434
400 CFM 75% Eff. 325 CFM 76% Eff. 250 CFM 77% Eff.
Ventilation Rate
LEGEND:
VLT = Ventilation Load – Total
VLS = Ventilation Load – Sensible
VLL = Ventilation Load – Latent
HRT = Heat Recovery – Total
HRS = Heat Recovery – Sensible
HRL = Heat Recovery – Latent
WVL = Winter Ventilation Load
WHR = Winter Heat Recovery
NOTE: All performance data is based on
operating intake and exhaust blower on
the same speed.
Manual 2100-701
Page 5 of 16
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