Arada Stoves Farringdon 16 User manual

11785 SE Highway 212 –Suite 305
Clackamas, OR 97015-9050
[phone]
Arada Stoves LTD
Project # 035-S-075-1
Model: Farringdon 16
Type: Free Standing Residential
Catalytic Wood Fired Heater
February 24, 2017 (Dirigo)
Revised: July 11, 2022, August 30,
2022
EPA Test Method 28R for
Certification and Auditing of
Wood Heaters
Contact:
Mr. Jon Butterworth
The Fire Works
Weycroft Avenue
Axminster, Devon
United Kingdom EX13 5HU
[e-mail]
[phone]

Project # 035-S-075-1 Model: Farringdon 16
Page | 1
Revision:
July 11, 2022
•Changed CO from g/hr to g/min
•Updated Summary Table for clarity.
•Added 1st hour emissions in g/hr for all runs.
•Added train precision criteria table.
•Added fuel load density to summary table.
•Added firebox volume drawing to main body of report.
•Added statement that no negative catch weights recorded.
August 30, 2022
•Added additional description of dilution tunnel per EPA request dated August 24, 2022 .
See Notes page and Page 28.
•Updated conditioning data to state that it was operated at a medium burn rate.
•All fuel used for conditioning was between 18% and 25% wet basis per ASTM E2780-10.
Because Conditioning data is not part of the overall results of the unit as tested,
Individual piece moisture was checked but not recorded.-Please note that the items that
are required to be recorded for conditioning purposes are:
oTime and Weight for all fuel (ASTM E2780-10 section 9.1.4)
oFlue gas temperature a minimum of once per hour (ASTM E2780-10 Section
9.1.5)
•Added comment to notes section that no written instructions were provided to the lab
from the manufacturer regarding the operation of the catalyst bypass. Operation of the
bypass was consistent with those in the Users Manual provided.

Project # 035-S-075-1 Model: Farringdon 16
Page | 2
Table of Contents
Revision:........................................................................................................................1
Affidavit:.........................................................................................................................4
Introduction:..................................................................................................................5
Notes:.............................................................................................................................5
Wood Heater Identification and Testing:.....................................................................6
Test Procedures and Equipment:..........................................................................................................7
Results:..........................................................................................................................8
Efficiency:............................................................................................................................................10
Summary Table: ....................................................................................................................................12
Run 2:..................................................................................................................................................12
Run 3:..................................................................................................................................................13
Run 4:..................................................................................................................................................13
Run 5:..................................................................................................................................................13
Precision:.....................................................................................................................14
Filter Catch:................................................................................................................. 15
Run 1:.....................................................................................................................................................15
Run 3:.....................................................................................................................................................16
Run 4:.....................................................................................................................................................16
Run 5:.....................................................................................................................................................17
Test Condition Summary:........................................................................................... 18
Heater Specifications:.................................................................................................18
Heater Dimensions................................................................................................................................18
Useable Firebox Volume:.....................................................................................................................19
Air Flow Schematic...............................................................................................................................20
Process Operations and Description:.................................................................................................25
Settings & Run Notes ...........................................................................................................................25
Test Fuel Properties: ............................................................................................................................27
Pre-burn Configuration: .......................................................................................................................27
Sampling Locations and Descriptions: ..............................................................................................28
Sample Points .......................................................................................................................................28
Sampling Methods:.....................................................................................................29
Analytical Methods Description:................................................................................ 29

Project # 035-S-075-1 Model: Farringdon 16
Page | 3
Calibration, Quality Control and Assurances:.......................................................... 29
Appliance Sealing and Storage: ................................................................................29
Sealing Label.........................................................................................................................................29
Sealed Unit.............................................................................................................................................30
Sampling and Analytical Procedures........................................................................32
Participants.................................................................................................................. 32
Analysis and Report Writing ......................................................................................32
Observers:...................................................................................................................32
Appliance Updates......................................................................................................32
Accreditations:............................................................................................................33
List of Appendices:.....................................................................................................37

Project # 035-S-075-1 Model: Farringdon 16
Page | 4
Affidavit:
Dirigo Laboratories, Inc. was contracted by Arada Stoves Ltd. to provide testing
services for the Farringdon 16 catalytic wood fired heater per EPA Method 28R for
Certification and Auditing of Wood Heaters. All testing and associated procedures were
conducted at Dirigo Laboratories, Inc. beginning on 2/14/2017 and ending on 2/17/2017.
Dirigo Laboratories is located at 11785 SE Highway 212 –Suite 305, Clackamas,
Oregon 97015. Testing procedures followed EPA Method 28R and ASTM E2780-10.
Particulate sampling was performed per ASTM E2515-11 Standard Test Method for
Determination of Particulate Matter Emissions Collected by a Dilution Tunnel.
Dirigo Laboratories is accredited by the U.S. Environmental Protection Agency for the
certification and auditing of wood heaters pursuant to subpart AAA of 40 CFR Part 60,
New Source Performance Standards for Residential Wood Heaters and subpart QQQQ
of 40 CFR Part 60, Standards of Performance for New Hydronic Heaters and Forced Air
Furnaces, Methods 28R, 28WHH, 28 WHH-PTS, and all methods listed in Sections
60.534 and 60.5476. Dirigo holds EPA Accreditation Certificate Numbers 4 and 4M
(mobile). Dirigo Laboratories, Inc. is accredited by A2LA to ISO 17020:2012 “Criteria for
Bodies Performing Inspections, ISO 17025:2005 “Requirements for Testing
Laboratories”, and ISO 17065:2012 “Requirements for Bodies Operating Product
Certification Systems”. Dirigo holds A2LA Certificate Numbers 3726.01, 3726.02, and
3726.03. See Appendix E for Accreditations.
The following people were associated with the testing, analysis and report writing
associated with this project.
John Steinert, President
Ben Nelke, Test Technician
Doug Towne, QA Manager

Project # 035-S-075-1 Model: Farringdon 16
Page | 5
Introduction:
Arada Stoves Ltd. of Axminster, United Kingdom, contracted with Dirigo Laboratories,
Inc. to perform EPA certification testing for their Model Farringdon 16 catalytic wood
heater. All testing was performed at Dirigo Laboratories, Inc. Testing was performed by
Mr. Ben Nelke.
Notes:
•A 50 hour break-in was performed on the appliance at Dirigo Laboratories, Inc.
from 12/02/16 through 12/14/16.
•Prior to testing, the dilution tunnel was cleaned with a steel brush.
•The heater has no blower so no fan confirmation test was performed.
•Front filters were changed on sample train A at one hour for all runs.
•There were no negative filter or probe weights for any of the test runs. All runs
were appropriate and valid.
•Leak checks were performed for all test runs and were verified in the run data.
•Sample ports are located 16.5 feet downstream from any disturbances and 1 foot
upstream from any disturbances. Flow rate traverse data was collected 12 feet
downstream from any disturbances and 5.5 feet upstream from any disturbances.
(See page 28)
•There were no written instructions provided by the manufacturer to the
Laboratory. The catalyst bypass was operated per the Owners Manual.

Project # 035-S-075-1 Model: Farringdon 16
Page | 6
Wood Heater Identification and Testing:
•Appliance Tested: Farringdon 16 Free Standing
•Serial Number: DEV6764B
•Manufacturer: Arada Stoves Ltd.
•Catalyst: Yes
•Heat exchange blower: None
•Type: Wood Stove
•Style: Free Standing
•Date Received: Tuesday, November 29, 2016
•Wood Heater Aging: December 2 - December 14, 2016
•Testing Period –Start: Tuesday, February 14, 2017 Finish: Friday, February
17, 2017
•Test Location: Dirigo Laboratories, Inc. 11785 SE HWY 212 - Suite 305,
Clackamas, OR 97015
•Elevation: ≈131 Feet above sea level
•Test Technician(s): Ben Nelke
•Observers: None

Project # 035-S-075-1 Model: Farringdon 16
Page | 7
Test Procedures and Equipment:
All Sampling and analytical procedures were performed by Ben Nelke. All procedures
used are directly from EPA Method 28R, ASTM E2780-10 and ASTM E2515-11.See
the list below for equipment used. See Appendix D for calibration data.
Equipment List:
1. Analyzer -California Analytical ZRE CO2/CO/O2 IR ANALYZER
2. Delmhorst J-2000 Wood Moisture Meter
3. Dayton 4c121 Blower for dilution tunnel -Emissions Booth #1
4. ScienTech Balance Scale
5. 10 lb Calibration Weight
6. DigiWeigh Bench Shipping Scale
7. APEX XC-60 Digital Emissions Sampling Box A
8. APEX XC-60 Digital Emissions Sampling Box B
9. APEX Ambient sampling box
10.Gast MOA-P122-AA Vacuum Pump
11.Rice Lake 3'x3' floor scale w/digital weight indicator

Project # 035-S-075-1 Model: Farringdon 16
Page | 8
Results:
For the Farringdon 16 wood heater, the weighted average emission rate is 1.5 g/hr with
a weighted average efficiency of 77.2% and a weighted average CO of 0.91 g/min. The
Arada Stoves Ltd. Model Farringdon 16 catalytic free standing wood heater meets the
2020 PM emission standard of ≤2.0 g/hr per CFR 40 part 60, §60.532 (b).
Detailed individual run data can be found in separate digital folders supplied with this
report.
Emissions:
EPA Method 28 - Weighted Average
Weighted Average: 1.5 (g/hr)
Client: Arada
Model: Farringdon 16
Tracking No.: 75
Project No.: 035-S-075-1
Test Dates: 2/14/17 - 2/17/17
Burn Rate Category 1 Burn Rate Category 1
Burn Rate (kg/hr-dry) 0.59 Burn Rate (kg/hr-dry) 0.77
Emissions Rate (g/hr) 0.9 Emissions Rate (g/hr) 1.1
Emissions Rate Cap (g/hr) 15 Emissions Rate Cap (g/hr) 15
Weighting Factor 10.96% Weighting Factor 14.42%
Run Number 1 Run Number 2
Burn Rate Category 2 Burn Rate Category 3
Burn Rate (kg/hr-dry) 0.98 Burn Rate (kg/hr-dry) 1.29
Emissions Rate (g/hr) 2.0 Emissions Rate (g/hr) 1.5
Emissions Rate Cap (g/hr) 15 Emissions Rate Cap (g/hr) 15
Weighting Factor 22.65% Weighting Factor 30.52%
Run Number 3 Run Number 4
Burn Rate Category 4
Burn Rate (kg/hr-dry) 2.01
Emissions Rate (g/hr) 1.7
Emissions Rate Cap (g/hr) 18
Weighting Factor 21.45%
Run Number 5

Project # 035-S-075-1 Model: Farringdon 16
Page | 9
EPA Method 28 - Weighted Average
Client: Arada
Model: Farringdon 16
Tracking No.: 75
Project No.: 035-S-075-1
Test Dates: 2/14/17 - 2/17/17
0.0
0.5
1.0
1.5
2.0
2.5
0.59 0.77 0.98 1.29 2.01
Emissions Rate (g/hr)
BurnRate (kg/hr)
EPAMethod28 - WeightedAverage

Project # 035-S-075-1 Model: Farringdon 16
Page | 10
Efficiency:
All efficiency values use the HHV.
CSA B415.1-10 Weighted Average
Weighted Average: 77.2 %
Client: Arada
Model: Farringdon 16
Tracking No.: 75
Project No.: 035-S-075-1
Test Dates: 2/14/17 - 2/17/17
Burn Rate Category 1 Burn Rate Category 1
Burn Rate (kg/hr-dry) 0.59 Burn Rate (kg/hr-dry) 0.77
OA Efficiency % 81.1 OA Efficiency % 83.4
Emissions Rate Cap (g/hr) 15 Emissions Rate Cap (g/hr) 15
Weighting Factor 10.96% Weighting Factor 14.42%
Run Number 1 Run Number 2
Burn Rate Category 2 Burn Rate Category 3
Burn Rate (kg/hr-dry) 0.98 Burn Rate (kg/hr-dry) 1.29
OA Efficiency % 79.5 OA Efficiency % 75.0
Emissions Rate Cap (g/hr) 15 Emissions Rate Cap (g/hr) 15
Weighting Factor 22.65% Weighting Factor 30.52%
Run Number 3 Run Number 4
Burn Rate Category 4
Burn Rate (kg/hr-dry) 2.01
Emissions Rate (g/hr) 71.7
Emissions Rate Cap (g/hr) 18
Weighting Factor 21.45%
Run Number 5

Project # 035-S-075-1 Model: Farringdon 16
Page | 11
CSA B415.1-10 - Weighted Average
Client: Arada
Model: Farringdon 16
Tracking No.: 75
Project No.: 035-S-075-1
Test Dates: 2/14/17 - 2/17/17
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
0.59 0.77 0.98 1.29 2.01
OverallEfficiency%
BurnRate (kg/hr)
CSAB415.1-10-WeightedAverage

Project # 035-S-075-1 Model: Farringdon 16
Page | 12
Summary Table:
Run 1
Run 2
Run 3
Run 4
Run 5
Date
2/14/17
2/15/17
2/16/17
2/17/17
2/17/17
Run Number
1
2
3
4
5
Emission Rate (g/hr)
0.91
1.06
1.99
1.53
1.68
Burn Rate (kg/hr)
0.59
0.77
0.98
1.29
2.01
Heat Output (Btu/hr)
8,298
12,124
14,589
18,210
27,025
Overall Efficiency (% HHV)
81.1
83.4
49.5
75.0
71.7
CO Emissions (g/MJ Output)
4.33
0.74
3.61
4.03
3.21
CO Emissions (g/kg Dry Fuel)
69.62
12.27
56.79
59.79
45.64
CO Emissions (g/min)
0.68
0.16
0.92
1.29
1.53
Emissions Rate –First Hour (g/hr)
3.23
3.48
5.85
4.54
3.18
Particulate emission average of 5 test runs: 1.5 grams per hour.
Weighted average HHV efficiency of 5 test runs: 77.2%.
Average CO emissions of 4 test runs: 0.91 g/min.
Run 1:
An attempt at a category I burn rate was performed on 2/14/17, resulting in a 0.59 kg/hr
category I burn rate. The test duration was 7 hours. The fuel weight was 10.9 lbs.
There was an average particulate emissions rate of 0.91 g/hr. The run had an overall
efficiency of 81.1%. The A filter was changed at 1 hr. The 1-hour filter catch was 3.23
g/hr. All test results were appropriate and valid. The burn rate category was achieved.
There were no anomalies and all criteria were met.
Run 2:
An attempt at a category II burn rate was performed on 2/15/17. However, 25 minutes
into the test run, the 4 x 4 on the front stack of the fuel load fell forward against the
glass slowing the burn witch resulted in an additional category I burn rate of 0.77 kg/hr.
The test duration was 5 hours 10 minutes. The fuel weight was 10.6 lbs. There was an
average particulate emissions rate of 1.06 g/hr. The run had an overall efficiency of
83.4%. The A filter was changed at 1 hr. The 1-hour filter catch was 3.48 g/hr. All test
results were appropriate and valid. The attempted burn rate category was missed.
There were no anomalies and all criteria were met.

Project # 035-S-075-1 Model: Farringdon 16
Page | 13
Run 3:
Run 3 was an attempt at a category II burn rate performed on 2/16/17, resulting in a
0.98 kg/hr burn rate. The test duration was 4 hours 10 minutes. The fuel weight was
10.7 lbs. There was an average particulate emissions rate of 1.99 g/hr. The run had an
overall efficiency of 79.5%. The A filter was changed at 1 hr. The 1-hour filter catch
was 5.85 g/hr. All test results were appropriate and valid. The burn rate category was
achieved. There were no anomalies and all criteria were met.
Run 4:
Run 4 was an attempt at a category III burn rate performed on 2/17/17, resulting in a
1.29 kg/hr burn rate. The test duration was 3 hours 10 minutes. The fuel weight was
10.8 lbs. There was an average particulate emissions rate of 1.53 g/hr. The run had an
overall efficiency of 75.0%. The A filter was changed at 1 hr. The 1-hour filter catch
was 4.54 g/hr. All test results were appropriate and valid. The burn rate category was
achieved. There were no anomalies and all criteria were met.
Run 5:
Run 5 was a high burn performed on 2/17/17 resulting in a 2.01 kg/hr burn rate. The
test duration was 2 hours. The fuel weight was 10.6 lbs. There was an average
particulate emissions rate of 1.68 g/hr. The run had an overall efficiency of 71.7%. The
A filter was changed at 1 hr. The 1-hour filter catch was 3.18g/hr. All test results were
appropriate and valid. The burn rate category was achieved. There were no anomalies
and all criteria were met.

Project # 035-S-075-1 Model: Farringdon 16
Page | 14
Precision:
Dual Train Comparison (ASTM E2515 11.7 - If either criterion (7.5% of average or 0.5 g/kg difference) is met, the
run is valid.
Run
#
Train A %
of avg.
Train B %
of avg.
Max
difference
(%)
<7.5% of
average?
Or
Train A
g/kg
Train B
g/kg
Difference
<0.5 g/kg
from each
other?
1
105.7
94.3
5.7
✓
1.638
1.463
0.175
✓
2
100.9
99.1
0.9
✓
1.387
1.362
0.025
✓
3
98.9
101.1
1.1
✓
2.021
2.064
0.043
✓
4
96.8
103.2
3.2
✓
1.144
1.221
0.077
✓
5
97.4
102.6
2.6
✓
0.817
0.859
0.042
✓

Project # 035-S-075-1 Model: Farringdon 16
Page | 15
Filter Catch:
Run 1:
Run 2:
Project # MFG
Run # 1 Model
Date
Train A Front Rear Filter # Tare Final Net Train B Front Rear Filter # Tare Final Net
First Hour 3028 0.1175 0.1206 0.0031 3030
3029 3031
3033 O ring
O Ring O ring
O Ring
6.3 mg 5.7 mg
Nozzle Nozzle
# Net # Net
1A 0.0003 0.3 1B 0.0001 0.1
6.6 mg 5.8 mg
Ambient Filter # Tare Final Net Vol (liter)
3032 0.1169 0.1170 0.0001 2305.638
O ring 1.6727 1.6730 0.0003
Total 0.4 mg
Notes:
035-S-075-1
2/21/17
Arada
Farringdon 16
TARE
FINAL
0.2348
Train A Total: 6.6mg Train B Total: 5.8mg Ambient Total: 0.4mg 1 Hour Catch: 3.1mg
0.2372
115.6254
115.6257
TARE
FINAL
115.9004
115.9005
Train A Total Catch
Train B Total Catch
3.5909
3.5917
0.0057
0.0032
3.5446
0.2341
0.2392
3.5452
Project # MFG
Run # 2 Model
Date
Train A Front Rear Filter # Tare Final Net Train B Front Rear Filter # Tare Final Net
First Hour 3034 0.1179 0.1212 0.0033 3036
3035 3037
3039 O ring
O Ring O ring
O Ring
4.9 mg 4.9 mg
Nozzle Nozzle
# Net # Net
6A 0.0004 0.4 6B 0.0002 0.2
5.3 mg 5.1 mg
Ambient Filter # Tare Final Net Vol (liter)
3038 0.1174 0.1174 0.0000 1736.481
O ring 1.6482 1.6484 0.0002
Total 0.2 mg
Notes:
0.0049
0.0016
3.5554
0.2354
0.2395
3.5562
Train A Total: 5.3mg Train B Total: 5.1mg Ambient Total: 0.2mg 1 Hour Catch: 3.3mg
0.2366
116.5641
116.5645
TARE
FINAL
116.1165
116.1167
Train A Total Catch
Train B Total Catch
3.5158
3.5168
035-S-075-1
2/21/17
Arada
Farringdon 16
TARE
FINAL
0.2360

Project # 035-S-075-1 Model: Farringdon 16
Page | 16
Run 3:
Run 4:
Project # MFG
Run # 3 Model
Date
Train A Front Rear Filter # Tare Final Net Train B Front Rear Filter # Tare Final Net
First Hour 3040 0.1181 0.1234 0.0053 3042
3041 3043
3045 O ring
O Ring O ring
O Ring
7.5 mg 7.4 mg
Nozzle Nozzle
# Net # Net
10A 0.0000 0.0 10B 0.0001 0.1
7.5 mg 7.5 mg
Ambient Filter # Tare Final Net Vol (liter)
3044 0.1177 0.1179 0.0002 1403.742
O ring 1.6416 1.6416 0.0000
Total 0.0002 mg
Notes:
035-S-075-1
2/21/17
Arada
Farringdon 16
TARE
FINAL
0.2358
Train A Total: 7.5mg Train B Tota: 7.5mg Ambient Total: 0.2mg 1Hour Catch: 5.3mg
0.2380
116.8265
116.8265
TARE
FINAL
117.1676
117.1677
Train A Total Catch
Train B Total Catch
3.5420
3.5420
0.0074
0.0022
3.5593
0.2361
0.2435
3.5593
Project # MFG
Run # 4 Model
Date
Train A Front Rear Filter # Tare Final Net Train B Front Rear Filter # Tare Final Net
First Hour 3046 0.1174 0.1216 0.0042 3048
3047 3049
3051 O ring
O Ring O ring
O Ring
0.1 mg 4.5 mg
Nozzle Nozzle
# Net # Net
12A 0.0000 0.0 12B 0.0000 0.0
0.1 mg 4.5 mg
Ambient Filter # Tare Final Net Vol (liter)
3050 0.1175 0.1175 0.0000 1003.027
O ring 1.6823 1.6823 0.0000
Total 0.0 mg
Notes:
035-S-075-1
2-21-2-17
Arada
Farringdon 16
TARE
FINAL
0.2346
Train A Total: 4.3mg Train B Total: 4.5mg Ambient Total: 0.0mg 1 Hour Catch: 4.2mg
0.2347
116.8890
116.8890
TARE
FINAL
117.0523
117.0523
Train A Total Catch
Train B Total Catch
3.5734
3.5734
0.0045
0.0001
3.5379
0.2357
0.2402
3.5379

Project # 035-S-075-1 Model: Farringdon 16
Page | 17
Run 5:
Project # MFG
Run # 5 Model
Date
Train A Front Rear Filter # Tare Final Net Train B Front Rear Filter # Tare Final Net
First Hour 3052 0.1172 0.1202 0.0030 3054
3053 3055
3057 O ring
O Ring O ring
O Ring
3.1 mg 3.1 mg
Nozzle Nozzle
# Net # Net
13A 0.0000 0.0 13B 0.0001 0.1
3.1 mg 3.2 mg
Ambient Filter # Tare Final Net Vol (liter)
3056 0.1180 0.1180 0.0000 633.178
O ring 1.6545 1.6546 0.0001
Total 0.1 mg
Notes:
0.0031
0.0001
3.5135
0.2354
0.2385
3.5135
Train A Total: 3.1mg Train B Total: 3.2mg Ambient Total: 0.1mg 1 Hour Catch: 3.0mg
0.2346
117.4532
117.4532
TARE
FINAL
117.0625
117.0626
Train A Total Catch
Train B Total Catch
3.5771
3.5771
035-S-075-1
2/21/17
Arada
Farringdon 16
TARE
FINAL
0.2345

Project # 035-S-075-1 Model: Farringdon 16
Page | 18
Test Condition Summary:
All testing conditions for all runs fell within allowable specifications of EPA Method 28R,
ASTM E2780-10 and ASTM E2515-11. A summary of facility conditions, temperature
averages, fuel burned and run times is listed below.
Runs
Ambient (Deg.
F)
Barometric
Pressure
(In. Hg.)
Test Fuel
Burned (Lbs.)
Fuel Loading
Density
(lbs/ft3)
Test Fuel
Moisture (Dry
Basis)
Run Time (Min.)
Pre
Post
1
69
69
30.06
10.9
6.94
20.6
420
2
70
70
29.72
10.6
6.75
20.3
310
3
72
70
29.56
10.7
6.82
19.3
250
4
67
69
29.60
10.8
6.88
19.7
190
5
70
73
29.60
10.6
6.75
19.9
120
Heater Specifications:
Dimensions, firebox configuration, air supply locations, air introduction locations, and
baffle locations of the wood heater are referenced below and on the following page.
Heater Dimensions
Heater Dimensions
Height
Width
Depth
Firebox
Volume
Weight
13.5”
21.250”
11.75”
1.57 ft3
340.7 lbs

Project # 035-S-075-1 Model: Farringdon 16
Page | 19
Useable Firebox Volume: