Esse Engineering WarmHeart Manual
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Esse Engineering WarmHeart Manual

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Non-Confidential Business Information
Certification Test Report
Wood-Fired Freestanding Room Heater, Non-Catalytic
Prepared for:
Prepared by:
Test Period:
Report Issued:
Report Number:
All data and information contained in this report are confidential and proprietary to Esse
Engineering Ltd. 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 Esse Engineering Ltd. 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.
(Non-CBI)
Esse Engineering Ltd.
Models: WarmHeart, BakeHeart
Esse Engineering Ltd.
3131 Baptiste Rd. Mill Bay
B.C. Cananda, VOR 2P3
OMNI-Test Laboratories, Inc.
13327 NE Airport Way
Portland, OR 97230
(503) 643-3788
December 15, 2020 – December 16, 2020
April 27, 2021
0224WS009E
-Document Edition # 000 (4/27/21) -

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Summary of Contents for Esse Engineering WarmHeart

  • Page 1 Esse Engineering Ltd. 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.
  • Page 2 Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E AUTHORIZED SIGNATORIES This report has been reviewed and approved by the following authorized signatories: Evaluator: __________________________ Bruce Davis, Testing Manager OMNI-Test Laboratories, Inc.

  • Page 3: Table Of Contents

    Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E TABLE OF CONTENTS PREFACE ....................... (3 pages) 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 –...

  • Page 4: Sampling Procedures And Test Results

    Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Section 1 Sampling Procedures and Test Results 4 of 161...

  • Page 5: Introduction

    SAMPLING PROCEDURE The WarmHeart 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 and EPA Alt-125, ASTM E3053. Particulate emissions were measured using sampling trains consisting of two Teflon coated 47mm filters (front and back).

  • Page 6: Individual Run Summaries

    Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E 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 from a hot to hot cycle at 3.37 kg/hr.
  • Page 7 Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Table 1 – Particulate Emissions Burn Rate ASTM E3053 ASTM E3053 Weighted Calculated from a Weighting Factor Emissions Hot to Hot burn ASTM E2515 (g/h) cycle Emissions (kg/h dry) (g/h) 3.37 4.44...
  • Page 8 Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Table 4 – Test Facility Conditions Room Temperature Barometric Pressure Air Velocity (°F) (Hg) (ft/min) Before After Before After Before After 29.42 29.45 <50 <50 29.45 29.52 <50 <50 29.22 29.20 <50...
  • Page 9 Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Table 6 – Fuel Measurement and Cordwood Description Summary – TEST All tests conducted using Maple Cordwood Test Fuel Firebox Consumed Nominal Fuel Loading Test Fuel Volume Test Fuel Density Wet...
  • Page 10 Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Table 8 – Test Configurations Startup Procedures Combustion Air Fuel Loading: Kindling and start-up fuel loaded together; a torch was used for 60 seconds to establish a top-down fire. At 37 minutes placed fuel load into the firebox.

  • Page 11: Photographs/Appliance Description/Drawings

    Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Section 2 Photographs/Appliance Description/Drawings OMNI-Test Laboratories, Inc. 11 of 161...
  • Page 12 Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Esse Engineering Ltd. WarmHeart Test Dates: August 4, 2020 – August 5, 2020 OMNI-Test Laboratories, Inc. 12 of 161...
  • Page 13 Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Esse Engineering Ltd. WarmHeart Run 1  Kindling and start-up fuel Run 1 – Kindling and start-up fuel Run 1  Fuel load Run 1 – Ignition of kindling OMNI-Test Laboratories, Inc.
  • Page 14 Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Esse Engineering Ltd. WarmHeart Run 1  Test Fuel Load In Stove Run 1  Remaining Coal Bed Run 2  Test Fuel Load Run 2 – Test Fuel Loaded into Stove OMNI-Test Laboratories, Inc.
  • Page 15 Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Run 3  Ignition of kindling Run 3 – Kindling and start-up fuel Run 3 – Test Fuel Load Run 3 – Test Fuel Loaded into Stove OMNI-Test Laboratories, Inc. 15 of 161...
  • Page 16 Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Run 3 - Remaining Coal After Test Run 4 – Test Fuel Load Run 4 – Test Fuel Loaded into Stove Run 4 – Air control setting OMNI-Test Laboratories, Inc. 16 of 161...
  • Page 17 Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Run 4 – Coal bed prior to stir Run 4 – Coal bed after stir Run 4 - Remaining Coal After Test OMNI-Test Laboratories, Inc. 17 of 161...
  • Page 18 Project Number: 0224WS009E WOOD HEATER DESCRIPTION Appliance Manufacturer: Esse Engineering Ltd. Wood Stove Model: WarmHeart, BakeHeart Type: Freestanding Non-Catalytic Wood Fired Room Heater WOOD HEATER INFORMATION Materials of Construction: The unit is constructed primarily of cast iron and mild steel.

  • Page 19: Test Data By Run

    Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Section 3 Test Data by Run OMNI-Test Laboratories, Inc. 19 of 161...
  • Page 20 OMNI-Test Laboratories, Inc. Conditioning Data - ASTM E3053/ ASTM E2515 Manufacturer: Esse Model: WarmHeart Tracking No.: 2400A Project No.: 0224WS0009E Test Date: Sept, Oct. 2020 Technician: Ben Nelke Operation Category: Medium Fuel moisture between 19 - 25% db, operated at a medium burn rate.
  • Page 21 Fueling instructions for use with ASTM E3053-17 ESSE Warmheart High Burn Proced Kindling: Kindling weight in total should be 1.5lbs (±0.5bs) 10 pieces in total. Ten pieces at 10.5’’ of equal size. Making sure the weight doesn’t exceed what’s allowed per the standard.
  • Page 22 Fueling instructions for use with ASTM E3053-17 : Two start-up and Two kindling pieces North/South : Two start-up and two kindling pieces East/West : Two start-up and two kindling pieces North/South Top: 0.6lbs – 0.5lbs pile of small kindling pieces in the middle as shown in the picture below, (4-5 Layers).
  • Page 23 Fueling instructions for use with ASTM E3053-17 ESSE Warmheart Medium and Low Procedure Test Fuel: Follow the guidelines of the cordwood standard (E3053-17) for correct moisture and weight ratios for the core and sub loads. There are five pieces in total. The nominal length is 11.5’’.
  • Page 24 Fueling instructions for use with ASTM E3053-17 Fuel Loading & Settings: Level the coal bed before you start sampling. If there happens to be any raw pieces left over, place them in the very rear of the stove. There should be minimal gaps between all fuel pieces.
  • Page 25 Fueling instructions for use with ASTM E3053-17 Moving Fuel Load: It may be necessary to move the fuel load at some point during the medium and low burns. Keep an eye on weight drop and stack draft to determine when to move the fuel if needed.

  • Page 26: Run 1

    Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Run 1 High Burn 1-minute data Emissions Results (Cold to Hot Cycle) OMNI-Test Laboratories, Inc. 26 of 161...
  • Page 27 OMNI-Test Laboratories, Inc. Wood Heater Test Data - ASTM E3053 / ASTM E2515 Run: Manufacturer: ESSE PM Control Modules: 371, 372 Model: WarmHeart Dilution Tunnel MW(dry): 29.00 lb/lb-mole Avg. Tunnel Velocity: 19.61 ft/sec. Tracking No.: 2400A Total Sampling Time: Dilution Tunnel MW(wet): 28.78 lb/lb-mole...
  • Page 28 OMNI-Test Laboratories, Inc. Wood Heater Test Data - ASTM E3053 / ASTM E2515 Run: Manufacturer: ESSE PM Control Modules: 371, 372 Model: WarmHeart Dilution Tunnel MW(dry): 29.00 lb/lb-mole Avg. Tunnel Velocity: 19.61 ft/sec. Tracking No.: 2400A Total Sampling Time: Dilution Tunnel MW(wet): 28.78 lb/lb-mole...
  • Page 29 OMNI-Test Laboratories, Inc. Wood Heater Test Data - ASTM E3053 / ASTM E2515 Run: Manufacturer: ESSE PM Control Modules: 371, 372 Model: WarmHeart Dilution Tunnel MW(dry): 29.00 lb/lb-mole Avg. Tunnel Velocity: 19.61 ft/sec. Tracking No.: 2400A Total Sampling Time: Dilution Tunnel MW(wet): 28.78 lb/lb-mole...
  • Page 30 OMNI-Test Laboratories, Inc. Wood Heater Lab Data - ASTM E23053 / ASTM E2515 Manufacturer: ESSE Equipment Numbers: Model: WarmHeart Tracking No.: 2400A Project No.: 0224WS009E Run #: 1 Date: 12/15/20 TRAIN 1 (First Hour emissions) Sample Component Reagent Filter, Probe...
  • Page 31 OMNI-Test Laboratories, Inc. Wood Heater Test Results - ASTM E3053 / ASTM E2515 Manufacturer: ESSE Model: WarmHeart Project No.: 0224WS009E Tracking No.: 2400A Run: 1 Test Date: 12/15/20 Burn Rate 2.89 kg/hr dry Average Tunnel Temperature 91 degrees Fahrenheit Average Gas Velocity in Dilution Tunnel - vs 19.61 feet/second...
  • Page 32 Wood Heater Efficiency Results - CSA B415.1 Manufacturer: ESSE Technician Signature: Model: WarmHeart Date: 12/15/20 Run: Control #: 0224WS009E Test Duration: Output Category: Test Results in Accordance with CSA B415.1-09 HHV Basis LHV Basis Overall Efficiency 71.3% 76.2% Combustion Efficiency 94.6%...
  • Page 33 Adjunct to ASTM E XXXX Wood Heater Cordwood Test Method ‐ May 10, 2017 Version THIS DOCUMENT IS NOT AN ASTM STANDARD; IT IS UNDER CONSIDERATION WITHIN AN ASTM TECHNICAL COMMITTEE BUT HAS NOT RECEIVED ALL APPROVALS REQUIRED TO BECOME AN ASTM STANDARD. Cordwood Fuel Load Calculators ‐ 10 lb/ft  Nominal Load Density IT SHALL NOT BE REPRODUCED OR CIRCULATED OR QUOTED, IN WHOLE OR IN PART, OUTSIDE OF ASTM COMMITTEE ACTIVITIES EXCEPT WITH THE APPROVAL OF THE CHAIRMAN OF THE COMMITTEE HAVING Core 45‐65% of Total Load Weight, Remainder 35‐55% of Total Load Weight JURISDICTION AND THE PRESIDENT OF THE SOCIETY.
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  • Page 36: Run 2

    Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Run 1 High Burn 1-minute data Efficiency and Heat Output Results Kindling and start-up fuel removed from calculations OMNI-Test Laboratories, Inc. 36 of 161...
  • Page 37 OMNI-Test Laboratories, Inc. Wood Heater Test Data - ASTM E3053 / ASTM E2515 Run: Manufacturer: ESSE PM Control Modules: 371, 372 Model: WarmHeart Dilution Tunnel MW(dry): 29.00 lb/lb-mole Avg. Tunnel Velocity: #DIV/0! ft/sec. Tracking No.: 2400B Total Sampling Time: Dilution Tunnel MW(wet): 28.78 lb/lb-mole...
  • Page 38 OMNI-Test Laboratories, Inc. Wood Heater Test Data - ASTM E3053 / ASTM E2515 Run: Manufacturer: ESSE PM Control Modules: 371, 372 Model: WarmHeart Dilution Tunnel MW(dry): 29.00 lb/lb-mole Avg. Tunnel Velocity: #DIV/0! ft/sec. Tracking No.: 2400B Total Sampling Time: Dilution Tunnel MW(wet): 28.78 lb/lb-mole...
  • Page 39 OMNI-Test Laboratories, Inc. Wood Heater Test Results - ASTM E3053 / ASTM E2515 Manufacturer: ESSE Model: WarmHeart Project No.: 0224WS009E Tracking No.: 2400B Run: 1 Test Date: 12/15/20 Burn Rate 3.37 kg/hr dry Average Tunnel Temperature #DIV/0! degrees Fahrenheit Average Gas Velocity in Dilution Tunnel - vs...
  • Page 40 Wood Heater Efficiency Results - CSA B415.1 ESSE Manufacturer: Technician Signature: WarmHeart Model: 12/15/20 Date: Run: Control #: 0224WS009E Test Duration: Output Category: Test Results in Accordance with CSA B415.1-09 HHV Basis LHV Basis 74.4% 79.5% Overall Efficiency 96.1% 96.1% Combustion Efficiency 82.8%...
  • Page 41 Adjunct to ASTM E XXXX Wood Heater Cordwood Test Method ‐ May 10, 2017 Version THIS DOCUMENT IS NOT AN ASTM STANDARD; IT IS UNDER CONSIDERATION WITHIN AN ASTM TECHNICAL COMMITTEE BUT HAS NOT RECEIVED ALL APPROVALS REQUIRED TO BECOME AN ASTM STANDARD. Cordwood Fuel Load Calculators ‐ 10 lb/ft  Nominal Load Density IT SHALL NOT BE REPRODUCED OR CIRCULATED OR QUOTED, IN WHOLE OR IN PART, OUTSIDE OF ASTM COMMITTEE ACTIVITIES EXCEPT WITH THE APPROVAL OF THE CHAIRMAN OF THE COMMITTEE HAVING Core 45‐65% of Total Load Weight, Remainder 35‐55% of Total Load Weight JURISDICTION AND THE PRESIDENT OF THE SOCIETY.
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  • Page 44: Run 3

    Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Run 2 Low Burn OMNI-Test Laboratories, Inc. 44 of 161...
  • Page 45 OMNI-Test Laboratories, Inc. Wood Heater Test Data - ASTM E3053 / ASTM E2515 Run: Manufacturer: ESSE PM Control Modules: 371, 372 Model: WarmHeart Dilution Tunnel MW(dry): 29.00 lb/lb-mole Avg. Tunnel Velocity: 20.17 ft/sec. Tracking No.: 2400A Total Sampling Time: Dilution Tunnel MW(wet): 28.78 lb/lb-mole...
  • Page 46 OMNI-Test Laboratories, Inc. Wood Heater Test Data - ASTM E3053 / ASTM E2515 Run: Manufacturer: ESSE PM Control Modules: 371, 372 Model: WarmHeart Dilution Tunnel MW(dry): 29.00 lb/lb-mole Avg. Tunnel Velocity: 20.17 ft/sec. Tracking No.: 2400A Total Sampling Time: Dilution Tunnel MW(wet): 28.78 lb/lb-mole...
  • Page 47 OMNI-Test Laboratories, Inc. Wood Heater Test Data - ASTM E3053 / ASTM E2515 Run: Manufacturer: ESSE PM Control Modules: 371, 372 Model: WarmHeart Dilution Tunnel MW(dry): 29.00 lb/lb-mole Avg. Tunnel Velocity: 20.17 ft/sec. Tracking No.: 2400A Total Sampling Time: Dilution Tunnel MW(wet): 28.78 lb/lb-mole...
  • Page 48 OMNI-Test Laboratories, Inc. Wood Heater Lab Data - ASTM E23053 / ASTM E2515 Manufacturer: ESSE Equipment Numbers: Model: WarmHeart Tracking No.: 2400A Project No.: 0224WS009E Run #: 2 Date: 12/15/20 TRAIN 1 (First Hour emissions) Sample Component Reagent Filter, Probe...
  • Page 49 OMNI-Test Laboratories, Inc. Wood Heater Test Results - ASTM E3053 / ASTM E2515 Manufacturer: ESSE Model: WarmHeart Project No.: 0224WS009E Tracking No.: 2400A Run: 2 Test Date: 12/15/20 Burn Rate 0.73 kg/hr dry Average Tunnel Temperature 77 degrees Fahrenheit Average Gas Velocity in Dilution Tunnel - vs 20.17 feet/second...
  • Page 50 Wood Heater Efficiency Results - CSA B415.1 B415.1 Manufacturer: ESSE Technician Signature: Model: WarmHeart Date: 12/15/20 Run: Control #: 0224WS009E Test Duration: Output Category: Test Results in Accordance with CSA B415.1-09 HHV Basis LHV Basis Overall Efficiency 75.9% 81.2% Combustion Efficiency 92.1%...
  • Page 51 Adjunct to ASTM E XXXX Wood Heater Cordwood Test Method ‐ May 10, 2017 Version THIS DOCUMENT IS NOT AN ASTM STANDARD; IT IS UNDER CONSIDERATION WITHIN AN ASTM TECHNICAL COMMITTEE BUT HAS NOT RECEIVED ALL APPROVALS REQUIRED TO BECOME AN ASTM STANDARD. Cordwood Fuel Load Calculators ‐ 12 lb/ft  Nominal Load Density IT SHALL NOT BE REPRODUCED OR CIRCULATED OR QUOTED, IN WHOLE OR IN PART, OUTSIDE OF ASTM COMMITTEE ACTIVITIES EXCEPT WITH THE APPROVAL OF THE CHAIRMAN OF THE COMMITTEE HAVING Core 45‐65% of Total Load Weight, Remainder 35‐55% of Total Load Weight JURISDICTION AND THE PRESIDENT OF THE SOCIETY.
  • Page 52 52 of 161...
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  • Page 54: Run 4

    Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Run 3 High Burn 1-minute data Non-Sampling OMNI-Test Laboratories, Inc. 54 of 161...
  • Page 55 OMNI-Test Laboratories, Inc. Wood Heater Test Data - ASTM E3053 / ASTM E2515 Run: Manufacturer: ESSE PM Control Modules: 371, 372 Model: WarmHeart Dilution Tunnel MW(dry): 29.00 lb/lb-mole Avg. Tunnel Velocity: #DIV/0! ft/sec. Tracking No.: 2400A Total Sampling Time: Dilution Tunnel MW(wet): 28.78 lb/lb-mole...
  • Page 56 OMNI-Test Laboratories, Inc. Wood Heater Test Data - ASTM E3053 / ASTM E2515 Run: Manufacturer: ESSE PM Control Modules: 371, 372 Model: WarmHeart Dilution Tunnel MW(dry): 29.00 lb/lb-mole Avg. Tunnel Velocity: #DIV/0! ft/sec. Tracking No.: 2400A Total Sampling Time: Dilution Tunnel MW(wet): 28.78 lb/lb-mole...
  • Page 57 OMNI-Test Laboratories, Inc. Wood Heater Test Data - ASTM E3053 / ASTM E2515 Run: Manufacturer: ESSE PM Control Modules: 371, 372 Model: WarmHeart Dilution Tunnel MW(dry): 29.00 lb/lb-mole Avg. Tunnel Velocity: #DIV/0! ft/sec. Tracking No.: 2400A Total Sampling Time: Dilution Tunnel MW(wet): 28.78 lb/lb-mole...
  • Page 58 OMNI-Test Laboratories, Inc. Wood Heater Test Results - ASTM E3053 / ASTM E2515 Manufacturer: ESSE Model: WarmHeart Project No.: 0224WS009E Tracking No.: 2400A Run: 3 Test Date: 12/16/20 Burn Rate 2.77 kg/hr dry Average Tunnel Temperature #DIV/0! degrees Fahrenheit Average Gas Velocity in Dilution Tunnel - vs...
  • Page 59 Adjunct to ASTM E XXXX Wood Heater Cordwood Test Method ‐ May 10, 2017 Version THIS DOCUMENT IS NOT AN ASTM STANDARD; IT IS UNDER CONSIDERATION WITHIN AN ASTM TECHNICAL COMMITTEE BUT HAS NOT RECEIVED ALL APPROVALS REQUIRED TO BECOME AN ASTM STANDARD. Cordwood Fuel Load Calculators ‐ 10 lb/ft  Nominal Load Density IT SHALL NOT BE REPRODUCED OR CIRCULATED OR QUOTED, IN WHOLE OR IN PART, OUTSIDE OF ASTM COMMITTEE ACTIVITIES EXCEPT WITH THE APPROVAL OF THE CHAIRMAN OF THE COMMITTEE HAVING Core 45‐65% of Total Load Weight, Remainder 35‐55% of Total Load Weight JURISDICTION AND THE PRESIDENT OF THE SOCIETY.
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  • Page 62 Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Run 4 Low Burn OMNI-Test Laboratories, Inc. 62 of 161...
  • Page 63 OMNI-Test Laboratories, Inc. Wood Heater Test Data - ASTM E3053 / ASTM E2515 Run: Manufacturer: ESSE PM Control Modules: 371, 372 Model: WarmHeart Dilution Tunnel MW(dry): 29.00 lb/lb-mole Avg. Tunnel Velocity: 19.91 ft/sec. Tracking No.: 2400A Total Sampling Time: Dilution Tunnel MW(wet): 28.78 lb/lb-mole...
  • Page 64 OMNI-Test Laboratories, Inc. Wood Heater Test Data - ASTM E3053 / ASTM E2515 Run: Manufacturer: ESSE PM Control Modules: 371, 372 Model: WarmHeart Dilution Tunnel MW(dry): 29.00 lb/lb-mole Avg. Tunnel Velocity: 19.91 ft/sec. Tracking No.: 2400A Total Sampling Time: Dilution Tunnel MW(wet): 28.78 lb/lb-mole...
  • Page 65 OMNI-Test Laboratories, Inc. Wood Heater Test Data - ASTM E3053 / ASTM E2515 Run: Manufacturer: ESSE PM Control Modules: 371, 372 Model: WarmHeart Dilution Tunnel MW(dry): 29.00 lb/lb-mole Avg. Tunnel Velocity: 19.91 ft/sec. Tracking No.: 2400A Total Sampling Time: Dilution Tunnel MW(wet): 28.78 lb/lb-mole...
  • Page 66 OMNI-Test Laboratories, Inc. Wood Heater Lab Data - ASTM E23053 / ASTM E2515 Manufacturer: ESSE Equipment Numbers: Model: WarmHeart Tracking No.: 2400A Project No.: 0224WS009E Run #: 4 Date: 12/16/20 TRAIN 1 (First Hour emissions) Sample Component Reagent Filter, Probe...
  • Page 67 OMNI-Test Laboratories, Inc. Wood Heater Test Results - ASTM E3053 / ASTM E2515 Manufacturer: ESSE Model: WarmHeart Project No.: 0224WS009E Tracking No.: 2400A Run: 4 Test Date: 12/16/20 Burn Rate 0.70 kg/hr dry Average Tunnel Temperature 77 degrees Fahrenheit Average Gas Velocity in Dilution Tunnel - vs 19.91 feet/second...
  • Page 68 Wood Heater Efficiency Results - CSA B415.1 B415.1 Manufacturer: ESSE Technician Signature: Model: WarmHeart Date: 12/16/20 Run: Control #: 0224WS009E Test Duration: Output Category: Test Results in Accordance with CSA B415.1-09 HHV Basis LHV Basis Overall Efficiency 75.4% 80.7% Combustion Efficiency 94.5%...
  • Page 69 Adjunct to ASTM E XXXX Wood Heater Cordwood Test Method ‐ May 10, 2017 Version THIS DOCUMENT IS NOT AN ASTM STANDARD; IT IS UNDER CONSIDERATION WITHIN AN ASTM TECHNICAL COMMITTEE BUT HAS NOT RECEIVED ALL APPROVALS REQUIRED TO BECOME AN ASTM STANDARD. Cordwood Fuel Load Calculators ‐ 12 lb/ft  Nominal Load Density IT SHALL NOT BE REPRODUCED OR CIRCULATED OR QUOTED, IN WHOLE OR IN PART, OUTSIDE OF ASTM COMMITTEE ACTIVITIES EXCEPT WITH THE APPROVAL OF THE CHAIRMAN OF THE COMMITTEE HAVING Core 45‐65% of Total Load Weight, Remainder 35‐55% of Total Load Weight JURISDICTION AND THE PRESIDENT OF THE SOCIETY.
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  • Page 72: Quality Assurance/Quality Control

    Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Section 4 Quality Assurance/Quality Control OMNI-Test Laboratories, Inc. 72 of 161...
  • Page 73 This report is issued within the scope of OMNI’s accreditation. Accreditation certificates are available upon request. The manufacturing facilities and quality control system for the production of the WarmHeart and BakeHeart at Esse Engineering Ltd. were evaluated to determine if sufficient to maintain conformance with OMNI’s requirements for product certification.

  • Page 74: Sample Analysis

    Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Sample Analysis Analysis Worksheets Tared Filter, Probe, and O-Ring Data OMNI-Test Laboratories, Inc. 74 of 161...
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  • Page 84 Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Calibrations ASTM E2515, ASTM E3053 ID # Lab Name/Purpose Log Name Attachment Type 10 lb Weight Weight Standard, 10 lb. Calibration Certificate 195050662 Platform Scale AWTX – ZM301-AD1 Calibration Certificate Digital Barometer...
  • Page 85 85 of 161...
  • Page 86 86 of 161...
  • Page 87 87 of 161...
  • Page 88 OMNI-Test Laboratories, Inc. Thermal Metering System Calibration Y Factor Previous Calibration Comparision Acceptable Manufacturer: Apex Date 6/15/2020 Deviation (5%) Deviation Model: XC-60-EP y Factor 0.994 0.0497 0.001 Acceptable Serial Number: 702003 Acceptance OMNI Tracking No.: OMNI-00371 Calibrated Orifice: FALSE Current Calibration Average Acceptable y Deviation 0.020...
  • Page 89 OMNI-Test Laboratories, Inc. DIFFERENTIAL PRESSURE GAUGE CALIBRATION DATA SHEET Instrument to be calibrated: Pressure Transducer Maximum Range: 0 – 2” H ID Number: OMNI-00371 Calibration Instrument: Digital Manometer ID Number: OMNI-00633 Date: 11/30/2020 Tony Tong This form is to be used only in conjunction with Standard Procedure C-SPC. Range of Digital Pressure Gauge...
  • Page 90 OMNI-Test Laboratories, Inc. Temperature Calibration EPA Method 28R, ASTM 2515 QUIPMENT OOTH EMPERATURE ONITOR UMBER Field Test Kit National Instruments Logger 00371, 00372 : 00373 Calibration Due Date: EFERENCE ETER QUIPMENT UMBER MBIENT AROMETRIC ALIBRATION ERFORMED EMPERATURE RESSURE Tony Tong 11/30/2020 30.45 Input...
  • Page 91 OMNI-Test Laboratories, Inc. Thermal Metering System Calibration Y Factor Previous Calibration Comparision Acceptable Manufacturer: Apex Date 6/16/2020 Deviation (5%) Deviation Model: XC-60-EP y Factor 0.998 0.0499 0.007 Acceptable Serial Number: 702004 Acceptance OMNI Tracking No.: OMNI-00372 Calibrated Orifice: FALSE Current Calibration Average Acceptable y Deviation 0.020...
  • Page 92 OMNI-Test Laboratories, Inc. DIFFERENTIAL PRESSURE GAUGE CALIBRATION DATA SHEET Instrument to be calibrated: Pressure Transducer Maximum Range: 0 – 2” H ID Number: OMNI-00372 Calibration Instrument: Digital Manometer ID Number: OMNI-00633 Date: 11/30/2020 Tony Tong This form is to be used only in conjunction with Standard Procedure C-SPC. Range of Digital Pressure Gauge...
  • Page 93 OMNI-Test Laboratories, Inc. Temperature Calibration EPA Method 28R, ASTM 2515 QUIPMENT OOTH EMPERATURE ONITOR UMBER Field Test Kit National Instruments Logger 00371, 00372 : 00373 Calibration Due Date: EFERENCE ETER QUIPMENT UMBER MBIENT AROMETRIC ALIBRATION ERFORMED EMPERATURE RESSURE Tony Tong 11/30/2020 30.45 Input...
  • Page 94 94 of 161...
  • Page 95 JJ Calibrations, Inc. Certificate of Calibration 7724 SE Aspen Summit Drive Portland, OR 97266-9217 Certificate Number: 742797 Phone 503.786.3005 FAX 503.786.2994 Omni-Test Laboratories 13327 NE Airport Way 210345 Portland, OR 97230 0723.01 Order Date: 02/18/2021 Calibration Authorized By: Property #: OMNI-00410 Calibrated on: 03/02/2021...
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  • Page 98 Z R E Z R E NDIR/0 NDIR/0 Z R E Z R E Z R E Z R E Z R E Z R E Z R E Z R E Z R E Z R E NDIR/0 NDIR/0 NDIR/0 NDIR/0 NDIR/0...
  • Page 99 JJ Calibrations, Inc. Certificate of Calibration 7724 SE Aspen Summit Drive Portland, OR 97266-9217 Certificate Number: 728321 Phone 503.786.3005 FAX 503.786.2994 Omni-Test Laboratories O n S i t e 13327 NE Airport Way 200302 Portland, OR 97230 0723.01 Order Date: 07/09/2020 Calibration Authorized By:...

  • Page 100: Example Calculations

    Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Example Calculations OMNI-Test Laboratories, Inc. 100 of 161...
  • Page 101 Equations and Sample Calculations – ASTM E3053 & E2515 Manufacturer: ESSE Model: WarmHeart Run: Category: Equations used to calculate the parameters listed below are described in this appendix. Sample calculations are provided for each equation. The raw data and printout results from a sample run are also provided for comparison to the sample calculations.
  • Page 102 OMNI-Test Laboratories, Inc. BR – dry burn rate, kg/hr ASTM E2780 equation (5) 60 M FTAdb θ Where, = Total length of test run, min θ Sample Calculation: = 4.68 = 385 θ 60 x 4.68 kg/hr 0.73 102 of 161 Control No.
  • Page 103 OMNI-Test Laboratories, Inc. – Average gas velocity in the dilution tunnel, ft/sec ASTM E2515 equations (9)        Where: strav , ASTM E2515 Equation (1) Adjustment factor for center of tunnel pitot tube placement, Fp = scent Dilution tunnel velocity calculated after the multi-point pitot traverse at the center, ft/sec scent...
  • Page 104 OMNI-Test Laboratories, Inc. – Average gas flow rate in dilution tunnel, dscf/hr ASTM E2515 equation (3)        3600 Where: 3600 Conversion from seconds to hours (ASTM method uses 60 to convert in minutes) Water vapor in gas stream, proportion by volume; assume 2% Cross sectional area of dilution tunnel, ft Standard absolute temperature, 528 °R Absolute average gas static pressure in dilution tunnel, = P...
  • Page 105 OMNI-Test Laboratories, Inc. – Volume of Gas Sampled Corrected to Dry Standard Conditions, dscf m(std) ASTM E2515 equation (6) Where: 17.64 °R/in. Hg Volume of gas sample measured at the dry gas meter, dcf Dry gas meter calibration factor, dimensionless Barometric pressure at the testing site, in.
  • Page 106 OMNI-Test Laboratories, Inc. – Total Particulate Matter Collected, mg ASTM E2515 Equation (12)    Where: mass of particulate matter from probe, mg mass of particulate matter from filters, mg mass of particulate matter from filter seals, mg Sample Calculation: Using equation for Train 1 (first hour): Using equation for Train 1 (post-first hour): Train 1 aggregate:...
  • Page 107 OMNI-Test Laboratories, Inc. - Concentration of particulate matter in tunnel gas, dry basis, corrected to standard conditions, g/dsc ASTM E2515 equation (13)   Where: Constant, 0.001 g/mg Total mass of particulate matter collected in the sampling train, mg Volume of gas sampled corrected to dry standard conditions, dscf m(std) Sample calculation: For Train 1:...
  • Page 108 OMNI-Test Laboratories, Inc. – Total Particulate Emissions, g ASTM E2515 equation (15)        Where: Concentration of particulate matter in tunnel gas, g/dscf Concentration particulate matter room air, g/dscf Average dilution tunnel gas flow rate, dscf/hr Total time of test run, minutes θ...
  • Page 109 OMNI-Test Laboratories, Inc. PR - Proportional Rate Variation ASTM E2515 equation (16)                   Where: θ = Total sampling time, min θ = Length of recording interval, min = Volume of gas sample measured by the dry gas meter during the “ith”...
  • Page 110 OMNI-Test Laboratories, Inc. – Particulate emissions for test run, g/hr ASTM E2780 equation (6) = 60 (E /θ) Where, = Total particulate emissions, grams θ = Total length of full integrated test run, min Sample Calculation: (Dual train average) = 11.89 g θ...
  • Page 111 OMNI-Test Laboratories, Inc. – Particulate emission factor for test run, g/dry kg of fuel burned ASTM E2780 equation (7) FTAdb Sample Calculation: (Dual train average) = 11.89 g 4.68 kg 11.89 / 4.68 g/kg 2.54 111 of 161 Control No. P-SSAR-0003 Low Burn Run 2...

  • Page 112: Labeling & Owner's Manual

    Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Section 5 Labeling & Owner’s Manual OMNI-Test Laboratories, Inc. 112 of 161...
  • Page 114 Bakeheart and Warmheart Wood Fired Cook Stove Owner’s Manual OMNI-Test Laboratories, Inc. 0224WS009S 0224WS009E...
  • Page 115 CONTACT MAY CAUSE SKIN BURNS. SAVE THESE INSTRUCTIONS FOR FUTURE USE. This manual describes the installation and operation of the ESSE Bakeheart / Warmheart wood heater and cook stove. Under specific test conditions this heater has been shown to deliver heat at rates ranging from 10,001 –...
  • Page 116 Contents 1. WELCOME TO YOUR ESSE ....................... 5 BEFORE USING YOUR COOK STOVE ....................6 2. OPERATING INSTRUCTIONS ....................6 GETTING TO KNOW YOUR COOK STOVE ..................6 SUPPLIED TOOLS AND PARTS ......................8 CO AND SMOKE ALARM........................ 9 VENTILATION ..........................9 FUEL ..............................
  • Page 117 CHIMNEY & FLUE ........................29 CHIMNEY HEIGHT........................34 POSITIONING WITHIN A MASONRY FIREPLACE ................35 FLOOR PROTECTION ........................36 WALL CLEARANCES (CLEARANCE DISTANCES) ................36 FLUE DRAFT..........................37 COMMISSIONING ........................37 4. CONSUMABLE PARTS ......................39...

  • Page 118: Welcome To Your Esse

    1. WELCOME TO YOUR ESSE Welcome to the ESSE family. We’ve poured all of our knowledge, expertise and passion for designing and manufacturing market leading stoves, dating back to 1854, into producing your ESSE cook stove. All ESSE cook stoves are manufactured at our UK factory in Lancashire, UK, and we’re confident that if appropriately installed, maintained and cared for, your ESSE cook stove will provide you with many years of room heating, cooking, comfort and joy.

  • Page 119: Before Using Your Cook Stove

    2. OPERATING INSTRUCTIONS 2. OPERATING INSTRUCTIONS BEFORE USING YOUR COOK STOVE Ensure that all protective packaging has been removed. The hotplate has been oiled at the factory to prevent rusting and therefore will require wiping with a damp cloth and drying with a paper towel, before use. This appliance is suitable for burning wood only.
  • Page 120 2. OPERATING INSTRUCTIONS Move left, to reduce intensity Move right, to increase intensity The firebox is accessed through the large glass fronted fire door, which is opened by rotating the catch 90° counter-clockwise. On the Bakeheart model, the oven is behind the bottom door, which is also opened by rotating the catch 90° counter-clockwise.

  • Page 121: Supplied Tools And Parts

    2. OPERATING INSTRUCTIONS SUPPLIED TOOLS AND PARTS Your ESSE cook stove comes supplied with… ✔ ✔ Heatshield • To install on the rear wall ✔ ✔ Glove • For interacting with the controls ✔ ✔ Operating Tool • Hotplate removal & opening doors ✔...

  • Page 122: Co And Smoke Alarm

    2. OPERATING INSTRUCTIONS CO AND SMOKE ALARM Your installer should have ensured that you have a carbon monoxide (CO) and smoke alarm fitted, in the same room as your ESSE cook stove. You should make sure that you are familiar with the operation of these essential pieces of equipment.

  • Page 123: Wood Logs

    2. OPERATING INSTRUCTIONS material. See the ‘INSTALLING THE HEATSHIELD’ section in the ‘Installation instructions’ section of this document for more information. WOOD LOGS Burning wood logs within your ESSE cook stove provides sustainable, efficient and ‘clean’ heating to your room. The moisture content of your wood is very important, as this affects both how ‘cleanly’...

  • Page 124: Lifting The Bolster Lid

    2. OPERATING INSTRUCTIONS Controllable Controllable Combustion Air enters your ESSE cook stove Combustion Air from the circular air inlet at the base of the appliance, and is adjusted by the air controller. When moved to the right, there is more air and a fiercer burn rate, whilst moved to the left, there is less air, and softer burn rate.
  • Page 125 2. OPERATING INSTRUCTIONS When your ESSE cook stove is first lit, it may smoke, give off an odour, or make ‘ticking noises’. This is quite normal, as the materials used within its manufacture are heated up for the first time. These symptoms will stop within a short period, but ensure that the room is well ventilated during this ‘settling in’...

  • Page 126: Refuelling

    2. OPERATING INSTRUCTIONS Controller to control the fire, until the flames are slowly ‘dancing’ on top of the wood logs. It is very important that your ESSE cook stove is not overfired, as this may cause long term damage to the appliance, and invalidate your warranty. The door should only be opened during the initial lighting / refuelling of your ESSE cook stove.

  • Page 127: Cooking On Your Cook Stove

    The ESSE Bakeheart both heats local spaces, whilst also being perfect for cooking on the hotplate, in the oven or even directly to the hot embers. The ESSE Warmheart is primarily a local space heater, but also incorporates a handy hotplate, for cooking or keeping hot beverages, soups or stews warm.
  • Page 128 2. OPERATING INSTRUCTIONS on the dial will drop, and take time to correct when the door is subsequently closed. Please note, the temperature gauge should only be used as a guide to the oven temperature. Your ESSE Bakeheart comes supplied with a wire shelf, which can be placed on the steel runner pins in the oven.
  • Page 129 2. OPERATING INSTRUCTIONS The Oven Gauge, with temperature guide Remember that the oven gauge (Bakeheart only) is a useful tool for giving an indication of the oven temperature, but due to how the oven is heated, should not be relied upon to give an exact temperature reading. When the hotplate is not in use, the bolster lids should be left down, to help retain heat and keep the hotplates warm.

  • Page 130: Reduced Burning

    2. OPERATING INSTRUCTIONS Fireshield (Bakeheart only) Fireshield in use (Bakeheart only) REDUCED BURNING Once a fire has established, close down the air control, and ensure that the door is firmly closed. Experimentation with the setting of air controls may be required, depending upon the flue draft and fuel type.
  • Page 131 2. OPERATING INSTRUCTIONS Your ESSE cook stove should be inspected frequently, and any required maintenance undertaken. We recommend that your ESSE cook stove is serviced once a year by a qualified service professional. As the cook stove top is used for cooking, associated wear and tear will occur. Spills should be wiped up immediately with a damp cloth.
  • Page 132 2. OPERATING INSTRUCTIONS of the appliance need re-painting, high temperature aerosol paints are available from your retailer. Glass window Do not clean the glass whilst it is hot. If the glass window needs cleaning, use a damp cloth. If stubborn stains remains, use a dedicated glass cleaning solution.

  • Page 133: Replacing The Fire Bricks

    2. OPERATING INSTRUCTIONS Internal flue The flue ways inside the cook stove should be cleaned as ways part of the annual service, and at the same time as the flue and chimney are swept. To do so, remove the hotplate by first inserting the end of the Operating Tool into the hole at the side of the steel disk.
  • Page 134 2. OPERATING INSTRUCTIONS 1. Remove the two screws holding the 2. Remove the steel airwash by steel baffle in place. unscrewing the two screws holding it in place, and pulling clear through the front of the cook stove. 3. Remove the steel baffle and baffle 4.

  • Page 135: Replacing The Fire Glass

    2. OPERATING INSTRUCTIONS 7. Slacken the fixing bolt holding the 8. Pull the two air pipes clear from the horizontal air pipe bracket in place, and firebox. swing it clear. 9. Remove the four side fire bricks through the front of the cook stove, insert the replacement bricks, then reverse steps 1 –...

  • Page 136: Chimney Sweeping

    2. OPERATING INSTRUCTIONS 1. Open the fire door. 2. Slacken off the two bottom glass retaining clips. 3. Remove the top two glass retaining clips. 4. Remove the used glass panel and ladder tape (15mm x 3mm thin rope) which sits around the glass panel. 5.

  • Page 137: Warranty

    2. OPERATING INSTRUCTIONS lighting the appliance, remove the top baffle bricks, to remove any debris, and check for blockages within the flue. WARRANTY Your ESSE cook stove has been built to the highest standard using premium materials, and comes with a two year manufacturer’s warranty. Register your ESSE cook stove, by either completing or returning the supplied Warranty Registration Card, or by registering online at www.esse.com/warranty- registration, and receive a warranty upgrade to five years.

  • Page 138: Troubleshooting

    2. OPERATING INSTRUCTIONS TROUBLESHOOTING Problem Cause Solution • Wet wood logs • Use wood logs with 15- 20% moisture content Window glass • Fuel touching glass • Use a poker to move fuel blackening window back within the fire box •...

  • Page 139: Planning The Installation

    3. INSTALLATION INSTRUCTIONS 3. INSTALLATION INSTRUCTIONS PLANNING THE INSTALLATION It is the installer’s responsibility to ensure that when installing the appliance, that all applicable Health and Safety requirements are met. The installation instructions within this manual provide a guide for safe and appropriate installation, but it is the responsibility of the installer to ensure that the requirements of applicable standards, relating to the installation of solid fuel appliances.

  • Page 140: Installing The Heatshield

    3. INSTALLATION INSTRUCTIONS INSTALLING THE HEATSHIELD Unit is supplied with a heat shield that is to be mounted to the wall. BAKEHEART HEATSHIELD (I-BH-100-005US) WARMHEART HEATSHIELD (I-WH-100-005US)
  • Page 141 3. INSTALLATION INSTRUCTIONS PRODUCT SPECIFICATION BAKEHEART WARMHEART ESSE cook stoves are hand crafted, so small variations in size can occur.

  • Page 142: Co And Smoke Alarm

    3. INSTALLATION INSTRUCTIONS Key Product Specifications Bakeheart Warmheart 2.15 grams per hour 2.15 grams per hour Emissions 75.4% 75.4% Efficiency 10,001 – 46,685 10,001 – 46,685 BTU Range Weight (lbs)* Minimum Flue Draft 12 Pa 12 Pa Flue Diameter 6”...
  • Page 143 3. INSTALLATION INSTRUCTIONS As a basic guideline… The minimum chimney internal cross section area must be 6” ✔ (150mm) diameter, or 6”x6” (150mm x 150mm). The chimney must have a minimum height of 13’ (4m) measured from ✔ the top of the stove to the top of the chimney. The chimney must extend at least 3’...
  • Page 144 3. INSTALLATION INSTRUCTIONS “T” section package, firestops (where needed), insulation shield, roof flashing, chimney cap, etc. maintain proper clearances to the structure as recommended by the manufacturer. The chimney must be the required height above the roof or other obstructions for safety and proper draft operation.
  • Page 145 3. INSTALLATION INSTRUCTIONS Method B Using 6” (152mm) inside diameter, listed factory-built Solid-Pak chimney section with insulation of 1” (25mm) or more, build a wall pass-through with a minimum 9” (229mm) air space between the outer wall of the chimney length and wall combustibles.
  • Page 146 3. INSTALLATION INSTRUCTIONS Method C Starting with a minimum 24 gauge 0.024” (0.6mm) 6” (152mm) metal chimney connector, and a minimum 24 gauge ventilated wall thimble which has two air channels of 1” (25mm) each, construct a wall pass-through. There shall be a minimum 6”...

  • Page 147: Chimney Height

    3. INSTALLATION INSTRUCTIONS sheet metal supports. Ensure that the supports are fastened securely to wall surfaces on all sides. Note:  Connectors to a masonry chimney, excepting method B, shall extend in one continuous section through the wall pass-through system and the chimney wall, up to but not past the inner flue liner face.

  • Page 148: Positioning Within A Masonry Fireplace

    3. INSTALLATION INSTRUCTIONS POSITIONING WITHIN A MASONRY FIREPLACE The cook stove can be positioned within a masonry fireplace, but care must be given where a combustible mantelpiece or beam is incorporated. Remember to incorporate enough room for the bolster lid to be fully opened. Where a mantelpiece or beam of combustible material, (such as wood), is used in the fireplace, it should be a...

  • Page 149: Floor Protection

    3. INSTALLATION INSTRUCTIONS FLOOR PROTECTION The cook stove must be placed upon a hearth or floor protector made from non- combustible material(s). The size of the hearth or floor protector must be in line with national requirements, in extending at least the minimum distance to the front, rear and sides of the appliance, and have a total size as indicated.

  • Page 150: Flue Draft

    3. INSTALLATION INSTRUCTIONS Check a single wall flue pipe is permitted with State and local officials, regarding the building code restrictions within your area. Clearance distances may only be reduced by means approved by the regulatory authority. FLUE DRAFT An appropriate flue draft is essential, for the stove to work safely and efficiently. When installed, and prior to commissioning, a flue draft reading should be taken, to ensure the draft is appropriate.
  • Page 151 3. INSTALLATION INSTRUCTIONS Please complete, for the owners records and to support any future warranty claims. Retailer information: Name: Address: Telephone number: Installation information: (Essential information - must be completed) Date of installation: ESSE model: Serial number: Installing engineer information: Name: Address: Telephone number:...

  • Page 152: Consumable Parts

    4. CONSUMABLE PARTS 3. INSTALLATION INSTRUCTIONS Item Part No. Description Item Part No. Description I-WH-100- I-WH-100- Front LHS Brick Insulating Board 006US 118US I-WH-100- I-WH-100- Front RHS Brick Baffle 009US 101US I-WH-100- ROPE/CUT.GRY Rear LHS Brick Door Rope 13MM 007US I-WH-100- Rear RHS Brick Glass Rope 2...
  • Page 153 ESSE Engineering Ltd., Long lng, Barnoldswick, Lancashire, BB18 6BJ, UK Tel. 01282 813 235 Fax. 01282 816 876 Website www.esse.com...
  • Page 154 Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Appendix A Alt-125 E3053 Letter OMNI-Test Laboratories, Inc.
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  • Page 158 Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Appendix B Firebox Volume OMNI-Test Laboratories, Inc.
  • Page 160 Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Appendix C Revision History Table OMNI-Test Laboratories, Inc.
  • Page 161 Esse Engineering Ltd. Model: WarmHeart, BakeHeart Project Number: 0224WS009E Tech. & Report Date Project No. Summary of Changes Evaluator Sect. 4/27/21 0224WS009E Bruce Davis Original Report was generated. OMNI-Test Laboratories, Inc.

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