Morsø 2B Classic 2020 User manual

CERTIFICATION TEST REPORT
Report no.:
300-ELAB-2526-EPA Rev4 110821
Page 1 of 49
Init.: JSA/
Order no.: 946206
No. of appendices: 35
Requested by:
Company: Morsø Jernstøberi A/S
Address: Furvej 19
Postcode/town: DK-7900 Nykøbing Mors
Country: Denmark
Email: [email protected]
Web: www.morsoe.com
Product:
Wood heater type: Morsø 2B Classic 2020
Sample:
Receipt at DTI, Aarhus: 1. September 2020
Test period:
Date of testing: 2.-4. September 2020
Procedure
Testing of a wood heater in accordance with DTI method “ELAB-PP-BR-15” based on
a relevant selection of standards and methods:
ASTM E2515-11
Yes
ASTM E3053-17 (Cordwood)
Yes
US EPA Method 28R in combination with ASTM E2780-10 (Cribwood)
No
CSA B415.1-10
Yes
EPA Communication on alternative method for Cordwood testing
Yes
Result:
The stove/ meets the requirements of NSPS §40 CFR Part 60.
Remarks:
See paragraph 2 - Remarks.
Terms:
Accredited testing was carried out in compliance with international requirements, and the
general terms and conditions of The Danish Technological Institute. The test results apply to
the tested products only. This test report may be reproduced in extract only if the laboratory
has approved the extract in writing. Danish Technological Institute is an EU Notified Body with
identification number 1235 and DIN Certco test laboratory, PL 168.
Issued:
11. August 2021, Danish Technological Institute, Aarhus, Stoves&Boiler test lab
Signature:
Jes Sig Andersen Max Bjerrum
Senior Specialist Quality Assurance
Test reg. no. 300
Teknologiparken
Kongsvang Allé 29
DK-8000 Aarhus C
[phone]
[email protected]
www.dti.dk
Jes Sig Andersen
2021.08.11 11:06:34 +02'00'

Report No.: 300-ELAB-2526-EPA Rev4 110821
Date: 11.08.2021
Initials: JSA/
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300-ELAB-2526-EPA Rev4 110821
1. Introduction.........................................................................................................................4
General ...........................................................................................................................4
Report revision history overview .........................................................................................4
Revision 1 changes ...........................................................................................................4
Revision 2 changes ...........................................................................................................4
Revision 3 changes ...........................................................................................................4
Revision 4 changes ...........................................................................................................5
List of Issues found (ref. Sanzhez email of June 10. 2021).....................................................5
Scope of testing................................................................................................................8
Site.................................................................................................................................8
Participants ......................................................................................................................8
DTI staff ..................................................................................................................................8
Client staff ...............................................................................................................................8
Test specimen ..................................................................................................................8
Description of the wood heater ...........................................................................................9
2. Aging prior to testing .......................................................................................................... 10
3. Summary of test results......................................................................................................11
Test schedule ................................................................................................................. 11
Main results ................................................................................................................... 11
Summary of the CS+HF and LF tests the 02-09-2020.......................................................... 11
Duct traverse data 2. September 2020 ..............................................................................15
Summary of the CS+HF and MF tests the 03-09-2020.........................................................16
Duct traverse data the 3. September 2020......................................................................... 19
Summary of CS+HF test the 4-09-2020............................................................................. 20
Duct traverse data the 4. September 2020......................................................................... 22
Anomalies...................................................................................................................... 22
4. High Fire net fuel consumption and burn rate calculations .......................................................23
Summary of test results .................................................................................................. 24
ADEC 18 AAC 50.077 Compliance (Fairbanks proof) ............................................................24
CSA HF1 PM report (#1) ..................................................................................................25
CSA HF1 CO, HO, EFF report (#1).....................................................................................26
CSA LF report (#2) ......................................................................................................... 27
CSA HF2 PM report (#3) ..................................................................................................28
CSA HF2 CO, HO, EFF report (#3).....................................................................................29
CSA MF report (#4)......................................................................................................... 30
CSA HF3 PM report (#5) ..................................................................................................31
CSA HF3 CO, HO, and EFF report (#5)............................................................................... 32
Weighted avg. calculation (LF#2, HF2#3, MF#4, HF3#5).....................................................33
Test facility conditions ..................................................................................................... 34
Fuel properties ............................................................................................................... 34
Summary of test fuel load properties................................................................................. 35
5. Test accomplishment .......................................................................................................... 36

Report No.: 300-ELAB-2526-EPA Rev4 110821
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Initials: JSA/
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300-ELAB-2526-EPA Rev4 110821
Remarks ........................................................................................36
Start-up operation ..........................................................................36
Sampling arrangement ....................................................................................................36
Fluepipe and chimney configuration................................................................................... 37
6. Sampling methods.............................................................................................................. 38
Particulate extraction system............................................................................................ 38
Calculation of PM emission ............................................................................................... 38
7. Quality assurance............................................................................................................... 38
Instrument calibration .....................................................................................................38
Logger data.................................................................................................................... 38
Morsø’s Quality Assurance Plan......................................................................................... 38
8. Documentation material ...................................................................................................... 39
9. Remarks ........................................................................................................................... 40
Internal correction of gasmeters ....................................................................................... 40
Unitary DTI Cribwood and Cordwood spreadsheet ............................................................... 40
Request of restriction of the air valve action....................................................................... 40
Duplicated High fire calculations .......................................................................................40
10. Discussion of Results .......................................................................................................... 40
11. Main results....................................................................................................................... 41
12. Test details........................................................................................................................42
Pre-conditioning.............................................................................................................. 42
Data, HF1 (#1) test run 2nd of September 2020..................................................................43
Data, LF (#2) test run 2nd of September 2020 .................................................................... 44
Data, HF2 (#3) test run 3rd of September 2020 .................................................................. 45
Data, MF (#4) test run 3rd of September 2020....................................................................46
Data, HF3 (#5) test run 4th of September 2020 .................................................................. 47
13. Test equipment.................................................................................................................. 48
14. Annexes............................................................................................................................ 49

Report No.: 300-ELAB-2526-EPA Rev4 110821
Date: 11.08.2021
Initials: JSA/
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300-ELAB-2526-EPA Rev4 110821
General
This report concerns testing of a free-standing cast iron wood heater, type Morsø 2B Classic 2020
The certification test report holds 35 annexes. From this 2. revision of the report, do not any longer
distinguish between CBI and non-CBI reports. The same unitary report applies for all purposes, meaning
only one version of the report is issued.
Please find the full list of annexes in chapter 14.
Figures are stated in European notation, with a comma as the decimal separator and period as the
thousand’s separator.
Report revision history overview
Release
Report number
Number of pages
(report only)
Issued date
initial
300-ELAB-2526-EPA (CBI and non-CBI)
45 (non-CBI)
18. Nov. 2020
Rev 1
300-ELAB-2526-EPA Rev 1 211221 (CBI
and non-CBI)
45 (non-CBI)
21. Jan. 2021
Rev 2
300-ELAB-2526-EPA Rev 2 220621
48
22. June 2021
Rev 3
300-ELAB-2526-EPA Rev 3 250621
49
25. June 2021
Rev 4
300-ELAB-2526-EPA Rev 4 110821
49
11. August 2021
Revision 1 changes
•New issue date 21. January 2021 and revision # raised to Rev 1
•Clause 3.5 amended with the laboratory’s declaration of test appropriateness, starting with “Based on the
evidence above”
•Clause 3.6 amended with the laboratory’s declaration of test appropriateness, starting with “Based on the
evidence above”
•Clause 3.8 amended with the laboratory’s declaration of test appropriateness, starting with “Based on the
evidence above”
•Annex 35; new annex holding the laboratory hand notes
Revision 2 changes
•New issue date 22. June 2021 and revision # raised to Rev 2
•Clause 1.1 General amended with notice of abandoning of distinguishing between a CBI and a non-CBI report.
Now one unitary report applies for all purposes.
•New clause 1.3 added, holding the EPA list of findings
•Clause 3.2, further elaboration of the reason for discarding of the HF1 test due to a clogged filter
•Clause 4.2, Note added on discarding of the HF1 results
•Report page count raised from 45 to 48
Revision 3 changes
•New issue date 25. June 2021 and revision # raised to Rev 3
•Clause 7.3, the test string “and the action of the air controls” was added
•Revised Annex 26, Assembly drawings showing in detail how the lower restriction of the air controls is
accomplished, notably drawing 2B-148 (Primary Air Controls) showing the bushing which stops the spinner
from being closed below three quarters of a turn. Further drawing 2B-511 (Main assy drawing) displaying an
explanatory note on the air controls extreme settings, the minimum being 0,75 turn which resembles an
effective open valve area of 212 sq mm.
•Revised annex 31a, US Users’ manual, on page 9 (printed manual pages 14-15) providing information in a
highlighted frame on the nature of the lower air controls restriction and a warning of NOT to tamper with the
physical stop.
•Revised annex 31b, CAN(Fr) Users’ manual, the same warning

Report No.: 300-ELAB-2526-EPA Rev4 110821
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Initials: JSA/
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300-ELAB-2526-EPA Rev4 110821
•Revised annex 34, Manufacturers’ QA plan, showing on page 4 where and how to
check the action of the air controls, again emphasizing that the minimum primary air
controls setting is 0,75 turn corresponding to a gap between the spinner and the
door on approximately 1 mm
•Report page count raised from 48 to 49
Revision 4 changes
•New issue date 11. August 2021 and revision # raised to Rev 4
•New clause 1.3 added, describing the report changes from the initial (final) report to the Rev 1 report
•New clause 1.4 added, describing the report changes from the Rev 1 to the Rev 2 report
•New clause 1.5 added, describing the report changes from the Rev 2 to the Rev 3 report
•New clause 1.6 added, describing the report changes from the Rev 3 to the Rev 4 report
List of Issues found (ref. Sanzhez email of June 10. 2021)
List of Issues Found
Issue
Applicable
Method/Rule
Section
Notes
How the
manufacturer/test
lab addressed the
issue
Clause
# or
page #
where
to find
addres-
sing of
irregu-
larities
1. Page 32 "For
the low fire
test, after
ignition the
air valve is
throttled to 3
quarters of a
revolution
open, and for
the medium fire
test, after
ignition the air
valve is
throttled to 1
and one
quarter of a
revolution
open."
Need to document
that the stove cannot
burn any lower than the
¾ turn as described in
the low burn test.
See additional
notes below.
40 CFR 60.537
(2) All
documentation
pertaining to the
certification test
used to obtain
certification,
including the full
test report and raw
data sheets,
laboratory
technician notes,
calculations, the
test results for all
test runs, and
discussions of the
appropriateness
and validity of all
test runs, including
runs attempted but
not completed. The
retained
certification test
documentation
must include, as
applicable, detailed
discussion of all
anomalies,
whether all burn
Manual says
that the low
fire is fixed and
cannot be
adjusted
further.
This means
that it was
tested at the
lowest possible
burn rate. Is
that
assertion
correct?
Need
clarification in
the TR about
the ¾ turn for
the low burn
setting.
There is a fixed stop in
place on production models
that prevents the air
controls from being closed
more that as tested (3/4 of
turn), which results in a
linear measurement of
1mm between the spinner
and the frame. The
appliance cannot be turned
any lower down than what
was tested. This restriction
is shown in detail in
drawing 2B-148, page 7 of
annex 26 (assembly
drawings) and further in
drawing 2B-511, page 2 of
annex 26
(reply clarified the 21/6
2021 by JSA)
Annex 26
(assembly
drawings),
page 2, the
main assy
drawing 2B-
511 and on
page 7,
primary air
controls
assy,
drawing 2B-
148
(21/6 JSA)

Report No.: 300-ELAB-2526-EPA Rev4 110821
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300-ELAB-2526-EPA Rev4 110821
rate categories
were properly
achieved, any data
not used in the
calculations and,
for any test runs
not completed, the
data that were
collected and the
reason that the
test run was not
completed. The
retained
certification test
also must include
documentation
that the burn
rate for the low
burn rate
category was no
greater than the
rate that an
operator can
achieve in home
use and no
greater than is
advertised by the
manufacturer or
retailer.
2. Page 36,
Discussion of
Results doesn't
document run
appropriateness
The basis for
determining
whether or not
the appliance has
complied with
this requirement
is based on 40
CFR
60.533(b)(5).
Per the
requirement,
"Documentation
must include
discussion of
each test run and
its
appropriateness
and validity, and
must include
detailed
discussion of all
anomalies,
whether all burn
rate categories
were achieved,
any data not
used in the
calculations and,
for any test runs
not completed,
the data
collected during
Revised
discussion.
The test run summaries
(sections 3.3, 3.5, and 3.7)
have been edited to state
that the runs were
determined to be
appropriate.
(reply modified the 21/6 by
JSA –former page
numbers deleted)
End of
section 3.3
on page 14;
End of
section 3.5
on page 18;
End of
section 3.7
on page 21
(21/6 JSA)

Report No.: 300-ELAB-2526-EPA Rev4 110821
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300-ELAB-2526-EPA Rev4 110821
the test run and
the reason(s)
that the test run
was not
completed and
why."
3. Page 54-56,
Annex 3 says,
"Sequence of
images from
the tests, the
5th February
2020"
but report indicates
test was 9/2/2020.
Date just
needs to be
changed in the
test report.
This was a typo that has
been corrected.
Annex 3
cover page;
Annex 3
header on
pages 2-4
(21/6 JSA)
4. Page 484 –
doesn't include
proper use of
air controls and
proper low fire
operation.
In manufacturer
instructions to the lab
they included things
such as turning controls
3 ¼ for fully open etc.
40 CFR 60.536
(g)(3)(iii) Proper
use of air controls,
including how to
establish good
combustion and
how to ensure
good combustion
at the lowest burn
rate for which the
heater is
warranted.
Would
recommend
manufacturer
modifying text
to give more
description on
home use
instructions on
operating the
air controls.
User manual instructions
have been updated to
provide more clarity on
various operational settings
including images for better
guidance
(reply modified and
clarified the 21/6 by JSA –
former page number
deleted)
Annex 31a
Users’
manual (US)
page 9;
Annex 31b
Users’
manual
(CAN) page
9
(21/6 JSA)
5. Did not see raw
data sheets for
filter weighing
etc.
6. Did not see raw
data sheets for
dry gas meter
for each test
run.
40 CFR 60.533
(b)(5)
Need filter
weight raw
data sheets
and raw
technician
notes. Submit
data.
Technician notes have been
added to the report, see
Annex 35
Gas meter values are
recorded pre- and post test
only, in-test monitoring of
sample rates and
proportionality are done via
calibrate flow meters, data
from these flow meters are
shown on raw data sheets.
Calibration certificates by
external Force Technology
to be seen in Annex 15,
page 34-36 (main train –
instrument id 144236
tracible to DTIs’ instrument
database
And further page 37-39
(split train –instrument id
144239)
(reply amended the 21/6
by JSA –Flow metering
details added and former
page number deleted)
Annex 35 in
its entirety;
Annex 21
HF1 Logger
data, page
7-11 (main
train flow
vel. in the
right most
column,
labelled Flow
H) and
pages 12-16
(split train
flow vel. in
the left most
column,
labelled Flow
D)
And similarly
in annexes
22-25 for
the
remaining
tests
(21/6 JSA)

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300-ELAB-2526-EPA Rev4 110821
7. HF1 was
omitted and we
see the
description in
the anomalies
section which
we find
acceptable.
8. HF1 in other
sections
(tables) needs
the same note
stating that it
was omitted
due to a
clogged filter.
If the TR is
being modified,
then please
make the
appropriate
changes to
justify the
exclusion of
HF1.
A statement in
each table that
says:
"HF1 was
excluded due
to a clogged
filter."
There are no fewer than 6
references to the fact that
HF1 was excluded due to
filter issues, including all
the relevant summary
tables (3.1, 3.2, 4.1, 4.2,
and 11)
As well as the individual
run summary section
(3.3), where else would
you have us include this
information?
(reply amended the 21/6
by JSA –the statement
“HF1 was excluded due to
a clogged filter” was
amended to the
explanatory note
underneath clause 3.2
‘Main results’)
Clause 3.2
on page 10;
Clause 3.3
on page 14
(bottom);
Clause 11
on page 40
(21/6 JSA)
Scope of testing
The appliance was tested to demonstrate compliance with the NSPS 2020 limits, using the ASTM E3053
ALT-125 Cordwood test method broadly accepted by the administrator. Please find the letter of acceptance
enclosed in annex 1.
Site
Testing was accomplished by Danish Technological Institute, Kongsvang Allé 29, DK-8000 Aarhus C,
Denmark in accordance with DTI’s accredited EPA test procedure ELAB-PP-BR-15.
The test procedure is amended in annex 14.
Participants
DTI staff
Testing in the laboratory was accomplished by:
-Jes Sig Andersen, Senior Specialist (lead)
-Rene Lyngsø Hvidberg, Senior specialist (trainee)
Client staff
The test work was witnessed by:
-Frank Juel Nielsen, Morsø Jernstøberi A/S
Test specimen
The stove was manufactured by:
Company: Morsø Jernstøberi A/S
Address: Furvej 6

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Postcode/town: DK-7900 Nykøbing Mors
Country: Denmark
The stove weighs 98 kg.
The stove is not equipped with a catalyst. The landscape type of firebox is deeper that its wide,
accommodation up to half a meter wood logs.
Variants: At the time of testing there was no known variants of the 2B Classic 2020 wood heater.
Description of the wood heater
Appliance Manufacturer: Morsø Jernstøberi A/S
Wood Stove Model: 2B Classic 2020
Type: Freestanding, radiant-type wood fired room heater.
WOOD HEATER DESCRIPTION
Materials of Construction: The unit is constructed primarily of cast iron with a stainless-steel secondary
combustion air supplying baffle. The firebox is lined with molded vermiculite firebricks. The feed door has
a 145 mm by 158 mm glass panel and one 870 mm by 8 mm glass fiber gasket. The ash door is sealed
with one 570 mm by 8 mm glass fiber gasket.

Report No.: 300-ELAB-2526-EPA Rev4 110821
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Initials: JSA/
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Air Introduction System: Air enters the firebox through a spin-draft located at
the front of the appliance at the top of the fuel-loading door. Secondary air enters
the appliance through the upper back and supplies a three-step, tiered hollow baffle.
Combustion Control Mechanisms: The combustion air inlet is controlled by a spin draft on the fuel-
loading door.
Combustor: N/A.
Internal Baffles: A stainless steel baffle with a ceramic blanket is mounted in the upper portion of the
firebox. The flame path is forced to the front of the firebox where it travels up through the opening
between the baffle and primary air manifold.
Other Features: N/ A.
Flue Outlet: The 6’’ diameter flue outlet is located at the top of the unit.
Firebox volume: 0,01943 m3or 0,6826 ft3 calculated in SolidWorks CAD simulator. Please find the firebox
drawing showing details on the firebox dimensions amended in Annex 33
The stove had been aged more than 50 hours of operation prior to the certification test while pre-testing
at Morsø including:
•The 21st of August 10 hours
•The 24th of August 10 hours
•The 26th of August 10 hours
•The 27th of August 10 hours
•The 28th of August 11 hours
Please find the set of pre-conditioning data in annex 2.