GHP Group GWS-2200 User manual

Non-Confidential Business Information
(Non-CBI)
Certification Test Report
GHP Group, Inc.
Model Name: Large Wood Stove, Legs
Large Wood Stove, Pedestal
Models: GWS-2200, GWS-2200-B, WSL-2200, WSL-2200-B,
LWS-2200, WS-2200, WS-2200-B, PH2200WS, PH2200WS-B,
SWS-2200, SWS-2200-B, HWS-2200, HWS-2200-B, PWS-2200-B
Wood-Fired Freestanding Room Heater
Prepared for: GHP Group, Inc.
6440 W Howard St
Niles, IL 60714
USA
Prepared by: OMNI-Test Laboratories, Inc.
13327 NE Airport Way
Portland, OR 97230
[phone]
Test Period: May 5, 2020 – May 6, 2020
Report Issued: June 22, 2020
Report Number: 0418WS018E
All data and information contained in this report are confidential and proprietary to GHP
Group, Inc. Its significance is subject to the adequacy and representative character of the
samples and to the comprehensiveness of the tests, examinations, or surveys made. The
contents of this report cannot be copied or quoted, except in full, without specific, written
authorization from GHP Group, Inc. and OMNI-Test Laboratories, Inc. No use of the
OMNI-Test Laboratories, Inc. name, logo, or registered mark (O-TL) is permitted, except as
expressly authorized by OMNI-Test Laboratories, Inc. in writing.
-Document Edition # 000 (06/22/20)-

GHP Group, Inc.
Model: Large Wood Stove
Report Number:0418WS018E
AUTHORIZED SIGNATORIES
This report has been reviewed and approved by the following authorized signatories:
Evaluator:
__________________________
Bruce Davis
Testing Manager
Reviewer:
___________________________
Alex Tiegs
President
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BDi

GHP Group, Inc.
Model: Large Wood Stove
Report Number:0418WS018E
TABLE OF CONTENTS
PREFACE...............................................................................................................(3 pages)
1. SAMPLING PROCEDURES AND TEST RESULTS........................................................4
Introduction..........................................................................................................................5
Individual Run summaries...................................................................................................6
Summary Tables
Table 1 - Particulate Emissions Results...............................................................................7
Table 2 - Particulate Emissions Results (First Hour)...........................................................7
Table 3 – B415.1 Efficiency and CO Emissions .................................................................7
Table 4 - Test Facility Conditions .......................................................................................8
Table 5 – Kindling and Start-up Fuel Description Summary..............................................8
Table 6 - Fuel Measurements and Cordwood Descriptions - Test.......................................9
Table 7 - Dilution Tunnel Gas Measurements and Sampling Data.....................................9
Table 10 - Test Configurations..........................................................................................10
2. PHOTOGRAPHS/APPLIANCE DESCRIPTION/DRAWINGS......................................11
Fuel Photographs ...............................................................................................................13
Appliance Description .......................................................................................................17
Model Similarities..............................................................................................................18
3. TEST DATA BY RUN......................................................................................................19
Run 1..................................................................................................................................27
Run 2..................................................................................................................................47
Run 3..................................................................................................................................57
Run 4..................................................................................................................................66
4. QUALITY ASSURANCE/QUALITY CONTROL..........................................................75
Sample Analysis.................................................................................................................77
Calibrations – ASTM E2515, ASTM E3053.....................................................................87
Example Calculations ......................................................................................................101
Appendix A Manufacturer’s Installation/Operation Instructions - Labels
Appendix B Alt-125 E3053 Letter
Appendix C Firebox Volume

GHP Group, Inc.
Model: Large Wood Stove
Report Number:0418WS018E
Section 1
Sampling Procedures and Test Results
4 of 142

GHP Group, Inc.
Model: Large Wood Stove
Report Number:0418WS018E
INTRODUCTION
GHP Group, Inc. retained OMNI to perform U.S. Environmental Protection Agency (EPA)
certification testing on the Large Wood Stove Freestanding woodstove. The Large Wood Stove
Freestanding wood stove is a Non-Catalytic-type room heater. The firebox is constructed of
mild steel. Usable firebox volume was measured to be 2.00 cubic feet and the stove is vented
through 6” flue collar located on the stove top.
Testing was performed at Nelke Consulting, altitude of the laboratory is 500 feet above sea level.
The unit was received in good condition and logged in on 5/4/20, then assigned and labeled with
OMNI ID #2409. OMNI representative Bruce Davis conducted the certification testing and
completed all testing by May 6, 2020.
This report is organized in accordance with the EPA-recommended outline and is summarized in
the Table of Contents immediately preceding this section. The results in this report are limited to
the item submitted.
SAMPLING PROCEDURE
The Large Wood Stove wood stove was tested in accordance with the U.S. EPA 40 CFR Part 60,
Subpart AAA –Standards of Performance for New Residential Wood Heaters using ASTM
E2515, EPA Alt-125, and ASTM E3053. Particulate emissions were measured using sampling
trains consisting of two Teflon coated 47mm filters (front and back). See Appendix B for details
on EPA Alt-125.
The model Large Wood Stove was tested for thermal efficiency and carbon monoxide (CO)
emissions in accordance with CSA B415.1-10 using Cherry cordwood.
SUMMARY OF RESULTS
The weighted average emissions of the three test runs included in the results indicate a
particulate emission rate of 1.48 grams per hour. Particulate emissions used in the weighted
average were sampled on only one of the high burn fuel loads, test 3 was conducted to generate a
coal bed for test number 4. The Large Wood Stove results are within the EPA 2020 emissions
limit of 2.5 g/h for affected products tested with cordwood.
The proportionality results for all 3 test runs were acceptable. Quality check results for each test
run are presented in Section 2 of this report.
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GHP Group, Inc.
Model: Large Wood Stove
Report Number:0418WS018E
INDIVIDUAL RUN SUMMARIES
Run 1 - Test procedures followed to produce a high burn rate with a primary air setting of
fully open. Observed burn rate was calculated at 5.18 kg/hr. Emissions results
were calculated using particulate sampling from kindling, start-up fuel, and test
fuel load combined (cold to hot). Burn rate, and efficiency were calculated using
data from the test fuel load only (hot to hot). No sampling anomalies occurred;
this test run was determined to be valid for inclusion in the weighted average.
Run 2 - Test procedures were followed to produce a medium burn rate with a primary air
setting of 0.03” from full closed. Observed burn rate was calculated at 1.18 kg/hr.
Emissions and efficiency results were calculated using a hot to hot burn cycle, a
coal bed generated by the high burn procedure was used. No sampling anomalies
occurred; this test run was determined to be valid for inclusion in the weighted
average.
Run 3 - Test procedures followed to produce a high burn rate with a primary air setting of
fully open. Observed burn rate was calculated at 4.84 kg/hr. Burn rate, was
calculated using data from the kindling, start-up fuel, and test fuel (cold to hot).
No sampling occurred during this test; it was conducted to generate a coal bed for
test number 4.
Run 4 - Test procedures were followed to produce a low burn rate with a primary air
setting of fully closed. Observed burn rate was calculated at 1.17 kg/hr.
Emissions and efficiency results were calculated using a hot to hot burn cycle, a
coal bed generated by the high burn conducted in test three was used. No
sampling anomalies occurred; this test run was determined to be valid for
inclusion in the weighted average.
6 of 142

GHP Group, Inc.
Model: Large Wood Stove
Report Number:0418WS018E
Table 1 –Particulate Emissions
Run
Burn Rate
Calculated from a
Hot to Hot burn
cycle
(kg/h dry)
ASTM E2515
Emissions
(g/h)
ASTM E3053
Weighting Factor
(%)
ASTM
E3053
Weighted
Emissions
(g/h)
1
5.18
1
4.65
20
0.930
2
1.18
0.84
40
0.336
4
1.17
0.53
40
0.212
The sum of weighted particulate emission of 3 test runs, tests 1,2, and 4:
0.930 + 0.336 + 0.212 = 1.48 grams per hour.
Note: 1Based on a cold start including kindling and start-up fuel.
Table 2 –Particulate Emissions (First Hour)
Run
ASTM E2515
Emissions
–
First Hour
(g/h)
1
5.49
2
5.24
4
3.32
Table 3 –B415.1 Efficiency and CO Emissions
Run
Heat
Output
(BTU/h)
HHV
Efficiency
(%)
LHV
Efficiency
(%)
CO Emissions
(g/MJ Output)
CO Emissions
(g/kg Dry Fuel)
CO Emissions
(g/min)
1
70,045
71.8
77.0
2.73
37.91
3.357
2
16,461
75.8
81.3
3.88
56.86
1.121
4
16,394
76.6
82.1
4.63
68.62
1.334
Weighted average HHV efficiency of three test runs: 14.36 + 30.32 + 30.64 = 75.3%.
Average CO Emissions of three tests: (3.357 + 1.121 + 1.334) / 3 = 1.937 g/min
7 of 142

GHP Group, Inc.
Model: Large Wood Stove
Report Number:0418WS018E
Table 4 –Test Facility Conditions
Run
Room Temperature
(°F)
Barometric
Pressure
(Hg)
Air Velocity
(ft/min)
Before
After
Before
After
Before
After
1
75
78
29.43
29.41
<50
<50
2
76
75
29.35
29.45
<50
<50
3
68
78
29.74
29.74
<50
<50
4
77
77
29.74
29.76
<50
<50
Table 5 –Kindling and Start-up Fuel Description Summary
Cherry Cordwood
Note: Test 3 was a high burn used to create a coal bed for test number 4, no particulate sampling
occurred during this test.
Run
Kindling
Weight
Wet Basis
(lbs)
Start-
up
Fuel Weight
Wet Basis
(lbs)
Residual
Start-
up
fuel weight
(lbs)
1
4.00
6.0
2.2
3
3.80
5.50
2.1
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GHP Group, Inc.
Model: Large Wood Stove
Report Number:0418WS018E
Table 6 –Fuel Measurement and Cordwood Description Summary –TEST
Cherry Cordwood
Run
Test Fuel
Wet Basis
(lbs)
Firebox
Volume
(ft3
)
Fuel Loading
Density Wet
Basis
(lbs/ft3)
Test Fuel
Dry Basis
(lbs)
Test Fuel
Consumed
During Test
Dry Basis
(lbs)
Piece
Length
(in)
1
20.6
2.00
10.3
16.86
+
8.56
21.2
[email protected]
[email protected]
2
25.1
2.00
12.6 20.6 20.6
[email protected]
[email protected]
3
19.6
2.00
9.8
16.03
+
8.05
20.1
[email protected]
[email protected]
4
25.1
2.00
12.6 20.6 20.6
[email protected]
[email protected]
Table 7 –Dilution Tunnel Gas Measurements and Sampling Data Summary
Run
Length of Test
(min)
Average Dilution Tunnel Gas Measurements
Velocity
(ft/sec)
Flow Rate
(dscf/min)
Temperature
(°F)
1
123
20.14
200.0
143
2
475
20.62
221.6
97
4
480
19.95
218.7
92
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GHP Group, Inc.
Model: Large Wood Stove
Report Number:0418WS018E
OMNI-Test Laboratories, Inc.
Table 10 –Test Configurations
Run
Startup Procedures
Combustion Air
1
Fuel Loading: Kindling and start-up fuel loaded together; a torch was used
for
20 seconds to establish a fire. At 45 minutes
placed fuel load into the
firebox and closed the loading door. Loading required less than 1 minute to
complete.
Door
: For kindling and start-up fuel, loading door was closed by 30
seconds.
Test fuel
load: fuel loading door was closed by 1:00 minute and
35 seconds.
Primary Air
: Air control fully open for the entire test.
Fan
:
Turned to high 5 minutes after lighting fire, on high remainder of test.
Bypass:
Open until
20 seconds after lighting kindling, not used for test fuel
load loading.
Fully open
for
entire test.
2
Fuel Loading
:
Test fuel loaded onto coal bed generated by test number 1 by
53
seconds.
Door
: Closed by 3 minutes and 32 seconds.
Primary Air
: Fully open
until 5 minutes and 36 seconds then set to half open.
At 12 minutes and 14 seconds
set to 0.03” from fully closed.
Fan
: Off for first 12 minutes and 14 seconds, then turned to high for
remainder of test.
Bypass: Not used.
Fully open for first
5 minutes
36
seconds, then set
to
half open. At
12 minutes 14
seconds set to
0.03” from
full
closed.
3
Fuel Loading: Kindling and start-up fuel loaded together; a torch was used
for 30 seconds to establish a fire. At 41 minutes placed fuel load into the
firebox and closed the loading door. Loading required less than 1 minute to
complete.
Door
: For kindling and start-up fuel, loading door was closed by 35
seconds.
Test fuel load: fuel loading door was closed by 1:00 minute and 3
0
seconds.
Primary Air
: Air control fully open for the entire test.
Fan
: Turned to high 5 minutes aft
er lighting fire, on high remainder of test.
Bypass:
Open until 35
seconds after lighting kindling, not used for test fuel
load loading.
Fully open for
entire test.
4
Fuel Loading: Test fuel loaded onto coal bed generated by test number 1 by
60
seconds.
Door
: Closed by 3 minutes and 30 seconds.
Primary Air
:
Fully open until 4 minutes and 45 seconds then set to half open.
At 10 minutes and 45 seconds set to fully closed.
Fan
: Off for first 10 minutes and 45 seconds, then turned to high for
remai
nder of test.
Bypass: Not used.
Fully open for first
3 minutes 30
seconds, then set
to half open. At
10 minutes 45
seconds set to full
closed.
10 of 142

GHP Group, Inc.
Model: Large Wood Stove
Report Number:0418WS018E
OMNI-Test Laboratories, Inc.
Section 2
Photographs/Appliance Description/Drawings
11 of 142

GHP Group, Inc.
Model: Large Wood Stove
Report Number:0418WS018E
OMNI-Test Laboratories, Inc.
GHP Group, Inc.
Model Large Wood Stove
Test Dates: May 5, 2020 – May 6, 2020
Front Left View Rear View
Front Right View
12 of 142

GHP Group, Inc.
Model: Large Wood Stove
Report Number:0418WS018E
OMNI-Test Laboratories, Inc.
GHP Group, Inc.
Model Large Wood Stove
Run 1 –Kindling and start-up fuel Run 1 

Kindling and start-up fuel
Run 1 –Ignition of kindling Run 1

Fuel load
13 of 142

GHP Group, Inc.
Model: Large Wood Stove
Report Number:0418WS018E
OMNI-Test Laboratories, Inc.
GHP Group, Inc.
Model Large Wood Stove
Run 1 –Test Fuel Load In Stove Run 1 

Remaining Coal After Test
Run 2 –Test Fuel Load Run 2

Test Fuel Loaded into Stove
Note: Photo not available for report
14 of 142

GHP Group, Inc.
Model: Large Wood Stove
Report Number:0418WS018E
OMNI-Test Laboratories, Inc.
Run 2 –Remaining Coal After Test Run 3 –Kindling and start-up fuel
Run 3 –Test Fuel Load Run 3 –Test Fuel Loaded into Stove
15 of 142

GHP Group, Inc.
Model: Large Wood Stove
Report Number:0418WS018E
OMNI-Test Laboratories, Inc.
Run 3 - Remaining Coal After Test Run 4 –Test Fuel Load
Run 4 –Test Fuel Loaded into Stove Run 4 

Remaining Coal After Test
16 of 142

GHP Group, Inc.
Model: Large Wood Stove
Report Number:0418WS018E
OMNI-Test Laboratories, Inc.
WOOD HEATER DESCRIPTION
Appliance Manufacturer: GHP Group, Inc.
Wood Stove Model: Large Wood Stove
Type: Freestanding Wood Fired Room Heater
WOOD HEATER INFORMATION
Materials of Construction: The unit is constructed primarily of mild steel. The firebox
is lined with 1.25” thick refractory brick that measures 9.0 x 4-7/16” on the back, sides
and hearth. The feed door has a 17.0 x 9.50 glass panel and 1” flat fiberglass gasket.
Air Introduction System: Primary air is controlled by a single slide plate located above
the fuel loading door. Secondary air has no user control and enters the firebox through
openings located on the bottom of the firebox.
Combustion Control Mechanisms: Combustion air control mechanism is a single slide
plate that covers two 1.25” x 0.75” openings. A single 0.18” round opening is always
open, regardless of air slide position.
Combustor: N/A
Internal Baffles: A two-piece vermiculite baffle is located above the secondary air tubes,
a sliding vermiculite panel used as a flue gas bypass is mounted near the rear of the
baffle.
Other Features: An optional blower is offered; the motor is 110 volts with a 200 CFM
rating. See drawings for additional information.
Flue Outlet: The 6” diameter flue outlet is located at the rear of the top of the appliance.
WOOD HEATER OPERATING INSTRUCTIONS
Specific Written Instructions: See Section 4 of this report. All markings and
instruction materials were reviewed for content prior to printing.
17 of 142

GHP Group, Inc.
Model: Large Wood Stove
Report Number:0418WS018E
OMNI-Test Laboratories, Inc.
MODEL SIMILARITIES
Large Wood Stove, Legs; Large Wood Stove, Pedestal;
GWS-2200 PH2200WS
GWS-2200-B PH2200WS-B
WSL-2200 SWS-2200
WSL-2200-B SWS-2200-B
LWS-2200 HWS-2200
WS-2200 HWS-2200-B
WS-2200-B PWS-2200-B
Besides "Leg" vs. "Pedestal" parts for the base, all models have exactly the same firebox
design and overall dimensions. The different model numbers are used for different sales
channels.
18 of 142

GHP Group, Inc.
Model: Large Wood Stove
Report Number:0418WS018E
OMNI-Test Laboratories, Inc.
Section 3
Test Data by Run
19 of 142

Fueling instructions for use with ASTM E3053-17
GHP Large with By-Pass High Burn Procedure
Kindling:
Kindling weight in total should be 3.5lbs (±0.5bs) ten pieces in total of equal size,
15-17’’ in length. Making sure the weight doesn’t exceed what’s allowed per the
standard.
Start-up Fuel:
The start-up fuel consists of ten pieces of equal size with a total weight of 5.5lbs
(±0.5lbs) and a length of 15-17’’.
Test Fuel:
The test fuel consists of five pieces with a nominal length of 16’’. Follow the fuel
sheet guideline for specific weights of the core and remainder loads.
Test fuel:
Start-up Procedure:
The start-up fuel is comprised of six layers as follows. All kindling pieces are
placed in between the start-up pieces. A small handful of tiny kindling pieces are
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