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Home My WebLink AboutLA160803 HVAC Forms HVAC Load Calculations for Country Joe Homes 8416 197th St Lakeville, MN Prepared By: Samantha Lykke Air Mechanical 16411 Aberdeen St NE Ham Lake, MN 55304 Wednesday, July 25, 2018 Rhvac is an ACCA approved Manual J and Manual D computer program. Calculations are performed per ACCA Manual J 8th Edition, Version 2, and ACCA Manual D. Rhvac - Residential & Light Commercial HVAC Loads Elite Software Development, Inc. Air Mechanical Inc. Ham Lake, MN 55304 Page 2 Project Report General Project Information Project Title: Project Date:Wednesday, July 25, 2018 Client Name:Country Joe Homes Client Address:8416 197th St Client City:Lakeville, MN Company Name:Air Mechanical Company Representative:Samantha Lykke Company Address:16411 Aberdeen St NE Company City:Ham Lake, MN 55304 Design Data Reference City:Minneapolis, Minnesota Building Orientation:Front door faces North Daily Temperature Range:Medium Latitude:44 Degrees Elevation:834 ft. Altitude Factor:0.970 Outdoor Outdoor Outdoor Indoor Indoor Grains Dry Bulb Wet Bulb Rel.Hum Rel.Hum Dry Bulb Difference Winter:-15 -12.38 n/a 30%72 29.40 Summer:88 73 50%50%74 37 Check Figures Total Building Supply CFM:964 CFM Per Square ft.:0.292 Square ft. of Room Area:3,298 Square ft. Per Ton:1,307 Volume (ft³):21,434 Building Loads Total Heating Required Including Ventilation Air:57,966 Btuh 57.966 MBH Total Sensible Gain:21,551 Btuh 71 % Total Latent Gain:8,728 Btuh 29 % Total Cooling Required Including Ventilation Air:30,279 Btuh 2.52 Tons (Based On Sensible + Latent) Notes Rhvac is an ACCA approved Manual J and Manual D computer program. Calculations are performed per ACCA Manual J 8th Edition, Version 2, and ACCA Manual D. All computed results are estimates as building use and weather may vary. Be sure to select a unit that meets both sensible and latent loads according to the manufacturer's performance data at your design conditions. C:\Users\slykke\Desktop\8416 197th St.rh9 Wednesday, July 25, 2018, 2:39 PM Rhvac - Residential & Light Commercial HVAC Loads Elite Software Development, Inc. Air Mechanical Inc. Ham Lake, MN 55304 Page 3 Miscellaneous Report System 1 Input Data Outdoor Dry Bulb Outdoor Wet Bulb Outdoor Rel.Hum Indoor Rel.Hum Indoor Dry Bulb Grains Difference Winter:-15 -12.38 100%30%72 29.40 Summer:88 73 50%50%74 37.40 Duct Sizing Inputs Main Trunk Runouts Calculate:Yes Yes Use Schedule:Yes Yes Roughness Factor:0.00300 0.01000 Pressure Drop:0.1000 in.wg./100 ft.0.1000 in.wg./100 ft. Minimum Velocity:650 ft./min 450 ft./min Maximum Velocity:900 ft./min 750 ft./min Minimum Height:0 in.0 in. Maximum Height:0 in.0 in. Outside Air Data Winter Summer Infiltration Specified:0.370 AC/hr 0.190 AC/hr 132 CFM 68 CFM Infiltration Actual:0.455 AC/hr 0.326 AC/hr Above Grade Volume:Cu.ft.Cu.ft.X 21,434 X 21,434 9,755 Cu.ft./hr 6,990 Cu.ft./hr X 0.0167 X 0.0167 Total Building Infiltration:163 CFM 116 CFM Total Building Ventilation:65 CFM 65 CFM ---System 1--- Infiltration & Ventilation Sensible Gain Multiplier: 14.94 = (1.10 X 0.970 X 14.00 Summer Temp. Difference) Infiltration & Ventilation Latent Gain Multiplier: 24.67 = (0.68 X 0.970 X 37.40 Grains Difference) Infiltration & Ventilation Sensible Loss Multiplier: 92.85 = (1.10 X 0.970 X 87.00 Winter Temp. Difference) Winter Infiltration Specified:0.370 AC/hr (132 CFM), Construction: Average Summer Infiltration Specified:0.190 AC/hr (68 CFM), Construction: Average C:\Users\slykke\Desktop\8416 197th St.rh9 Wednesday, July 25, 2018, 2:39 PM Rhvac - Residential & Light Commercial HVAC Loads Elite Software Development, Inc. Air Mechanical Inc. Ham Lake, MN 55304 Page 4 Duct Size Preview Room or Duct Name Source Minimum Velocity Maximum Velocity Rough. Factor Design L/100 SP Loss Duct Velocity Duct Length Htg Flow Clg Flow Act. Flow Duct Size System 1 Supply Runouts Zone 1 1-Lower Level Built-In 450 750 0.01 0.1 624.1 143 170 170 2--5 2-Main Level Built-In 450 750 0.01 0.1 519.9 247 408 408 4--6 3-Upper Level Built-In 450 750 0.01 0.1 491 294 386 386 4--6 Other Ducts in System 1 Supply Main Trunk Built-In 650 900 0.003 0.1 826.4 683 964 964 12x14 SummarySummarySummarySummarySummarySummarySummarySummary System 1 Heating Flow:683 Cooling Flow:964 C:\Users\slykke\Desktop\8416 197th St.rh9 Wednesday, July 25, 2018, 2:39 PM Rhvac - Residential & Light Commercial HVAC Loads Elite Software Development, Inc. Air Mechanical Inc. Ham Lake, MN 55304 Page 5 Detailed Room Loads - Room 1 - Lower Level (Average Load Procedure) General Calculation Mode:Htg. & clg.Occurrences:1 Room Length:n/a System Number:1 Room Width:n/a Zone Number:1 Area:990.0 sq.ft.Supply Air:170 CFM Ceiling Height:8.0 ft.Supply Air Changes:1.3 AC/hr Volume:7,920 cu.ft.Req. Vent. Clg:0 CFM Number of Registers:2 Actual Winter Vent.:14 CFM Runout Air:85 CFM Percent of Supply.:8 % Runout Duct Size:5 in.Actual Summer Vent.:11 CFM Runout Air Velocity:624 ft./min.Percent of Supply:7 % Runout Air Velocity:624 ft./min.Actual Winter Infil.:16 CFM Actual Loss:0.311 in.wg./100 ft.Actual Summer Infil.:11 CFM Item Description Area Quantity -U- Value Htg HTM Sen Loss Clg HTM Lat Gain Sen Gain N -Wall-15B0-10sf-8 32 X 8 256 0.050 4.4 1,114 0.0 0 0 E -Wall-15B0-10sf-8 32 X 8 256 0.050 4.4 1,114 0.0 0 0 S -Wall-12F-0bw 32 X 8 196.5 0.065 5.7 1,111 0.6 0 123 W -Wall-15B0-10sf-8 32 X 8 256 0.050 4.4 1,114 0.0 0 0 S -Gls-4agdoor shgc-0.28 0%S 42 0.290 25.2 1,060 16.8 0 706 S -Gls-4a shgc-0.28 0%S 17.5 0.290 25.2 442 16.8 0 294 Floor-21A-20 1 X 990 990 0.027 2.3 2,326 0.0 0 0 Subtotals for Structure:8,281 0 1,123 Infil.: Win.: 15.6, Sum.: 11.2 256 5.648 1,446 0.652 275 167 Ductwork:182 0 AED Excursion:120 Equipment:900 1,200 Lighting:300 1,023 Room Totals:9,909 1,175 3,633 C:\Users\slykke\Desktop\8416 197th St.rh9 Wednesday, July 25, 2018, 2:39 PM Rhvac - Residential & Light Commercial HVAC Loads Elite Software Development, Inc. Air Mechanical Inc. Ham Lake, MN 55304 Page 6 Detailed Room Loads - Room 2 - Main Level (Average Load Procedure) General Calculation Mode:Htg. & clg.Occurrences:1 Room Length:n/a System Number:1 Room Width:n/a Zone Number:1 Area:990.0 sq.ft.Supply Air:408 CFM Ceiling Height:9.0 ft.Supply Air Changes:2.7 AC/hr Volume:8,910 cu.ft.Req. Vent. Clg:0 CFM Number of Registers:4 Actual Winter Vent.:23 CFM Runout Air:102 CFM Percent of Supply.:6 % Runout Duct Size:6 in.Actual Summer Vent.:28 CFM Runout Air Velocity:520 ft./min.Percent of Supply:7 % Runout Air Velocity:520 ft./min.Actual Winter Infil.:70 CFM Actual Loss:0.169 in.wg./100 ft.Actual Summer Infil.:50 CFM Item Description Area Quantity -U- Value Htg HTM Sen Loss Clg HTM Lat Gain Sen Gain N -Wall-12F-0bw 32 X 9 239.8 0.065 5.7 1,356 0.6 0 150 E -Wall-12F-0bw 32 X 9 280 0.065 5.7 1,583 0.6 0 175 S -Wall-12F-0bw 32 X 9 192 0.065 5.7 1,086 0.6 0 120 W -Wall-12F-0bw 32 X 9 280 0.065 5.7 1,583 0.6 0 175 N -Door-11N 3 X 7 21 0.350 30.5 639 8.8 0 184 N -Door-11G 3 X 7 21 0.540 47.0 987 13.5 0 284 N -Gls-4a shgc-0.28 100%S 6.2 0.290 25.2 158 9.4 0 59 E -Gls-4a shgc-0.28 0%S (2)8 0.290 25.2 202 30.3 0 242 S -Gls-4a shgc-0.28 0%S (3)54 0.290 25.2 1,362 16.8 0 906 S -Gls-4agdoor shgc-0.28 0%S 42 0.290 25.2 1,060 16.8 0 706 W -Gls-4a shgc-0.28 0%S 8 0.290 25.2 202 30.3 0 242 Subtotals for Structure:10,218 0 3,243 Infil.: Win.: 70.1, Sum.: 50.2 1,152 5.650 6,509 0.651 1,239 750 Ductwork:314 0 AED Excursion:288 People: 200 lat/per, 230 sen/per:1 200 230 Equipment:1,500 2,500 Lighting:500 1,705 Room Totals:17,041 2,939 8,716 C:\Users\slykke\Desktop\8416 197th St.rh9 Wednesday, July 25, 2018, 2:39 PM Rhvac - Residential & Light Commercial HVAC Loads Elite Software Development, Inc. Air Mechanical Inc. Ham Lake, MN 55304 Page 7 Detailed Room Loads - Room 3 - Upper Level (Average Load Procedure) General Calculation Mode:Htg. & clg.Occurrences:1 Room Length:n/a System Number:1 Room Width:n/a Zone Number:1 Area:1,318.0 sq.ft.Supply Air:386 CFM Ceiling Height:8.0 ft.Supply Air Changes:2.2 AC/hr Volume:10,544 cu.ft.Req. Vent. Clg:0 CFM Number of Registers:4 Actual Winter Vent.:28 CFM Runout Air:96 CFM Percent of Supply.:7 % Runout Duct Size:6 in.Actual Summer Vent.:26 CFM Runout Air Velocity:491 ft./min.Percent of Supply:7 % Runout Air Velocity:491 ft./min.Actual Winter Infil.:77 CFM Actual Loss:0.151 in.wg./100 ft.Actual Summer Infil.:55 CFM Item Description Area Quantity -U- Value Htg HTM Sen Loss Clg HTM Lat Gain Sen Gain N -Wall-12F-0bw 32 X 8 216 0.065 5.7 1,221 0.6 0 135 E -Wall-12F-0bw 47 X 8 363.5 0.065 5.7 2,056 0.6 0 227 S -Wall-12F-0bw 32 X 8 201 0.065 5.7 1,137 0.6 0 125 W -Wall-12F-0bw 47 X 8 376 0.065 5.7 2,126 0.6 0 235 N -Gls-4a shgc-0.28 100%S (4)25 0.290 25.2 632 9.4 0 236 N -Gls-4a shgc-0.28 100%S 15 0.290 25.2 378 9.3 0 140 E -Gls-4a shgc-0.28 0%S 12.5 0.290 25.2 315 30.2 0 378 S -Gls-4a shgc-0.28 0%S (3)45 0.290 25.2 1,134 16.8 0 756 S -Gls-4a shgc-0.28 0%S 10 0.290 25.2 252 16.8 0 168 UP-Ceil-16B-44 1318 X 1 1318 0.022 1.9 2,523 1.1 0 1,421 Floor-20P-30 1 X 328 328 0.035 3.0 999 0.3 0 103 Subtotals for Structure:12,773 0 3,924 Infil.: Win.: 76.9, Sum.: 55.1 1,264 5.650 7,141 0.651 1,360 823 Ductwork:373 0 AED Excursion:272 People: 200 lat/per, 230 sen/per:3 600 690 Equipment:1,050 1,500 Lighting:300 1,023 Room Totals:20,287 3,010 8,232 C:\Users\slykke\Desktop\8416 197th St.rh9 Wednesday, July 25, 2018, 2:39 PM Rhvac - Residential & Light Commercial HVAC Loads Elite Software Development, Inc. Air Mechanical Inc. Ham Lake, MN 55304 Page 8 System 1 Room Load Summary No Room Name Area SF Htg Sens Btuh Min Htg CFM Run Duct Size Run Duct Vel Clg Sens Btuh Clg Lat Btuh Min Clg CFM Act Sys CFM ---Zone 1--- 1 Lower Level 990 9,909 143 2-5 624 3,633 1,175 170 170 2 Main Level 990 17,041 247 4-6 520 8,716 2,939 408 408 3 Upper Level 1,318 20,287 294 4-6 491 8,232 3,010 386 386 Ventilation 6,035 971 1,604 Humidification 3,823 Return Duct 869 0 0 System 1 total 3,298 57,966 683 21,551 8,728 964 964 System 1 Main Trunk Size:12x14 in. Velocity:826 ft./min Loss per 100 ft.:0.107 in.wg Cooling System Summary Cooling Tons Sensible/Latent Split Sensible Btuh Latent Btuh Total Btuh Net Required:2.52 71% / 29%21,551 8,728 30,279 Equipment Data Heating System Cooling System Type:Natural Gas Furnace Standard Air Conditioner Model: Indoor Model: Brand: Efficiency:0 AFUE 0 SEER Sound:0 0 Capacity:0 Btuh 0 Btuh Sensible Capacity:n/a 0 Btuh Latent Capacity:n/a 0 Btuh C:\Users\slykke\Desktop\8416 197th St.rh9 Wednesday, July 25, 2018, 2:39 PM 1 Ventilation, Makeup and Combustion Air Calculations Submittal Form For New Dwellings Site address Date Contractor Completed By Section A Ventilation Quantity (Determine quantity by using Table N1104.2 or Equation 11‐1) Square feet (Conditioned area including basement – finished or unfinished) Number of bedrooms Total required ventilation Continuous ventilation Directions ‐ Determine the total and continuous ventilation rate by either using Table N1104.2 or equation 11‐1. The table and equation are below. Table N1104.2 Total and Continuous Ventilation Rates (in cfm) Number of Bedrooms 1 2 3 4 5 6 Conditioned space (in sq. ft.) Total/ continuous Total/ continuous Total/ continuous Total/ continuous Total/ continuous Total/ continuous 1000‐1500 60/40 75/40 90/45 105/53 120/60 135/68 1501‐2000 70/40 85/43 100/50 115/58 130/65 145/73 2001‐2500 80/40 95/48 110/55 125/63 140/70 155/78 2501‐3000 90/45 105/53 120/60 135/68 150/75 165/83 3001‐3500 100/50 115/58 130/65 145/73 160/80 175/88 3501‐4000 110/55 125/63 140/70 155/78 170/85 185/93 4001‐4500 120/60 135/68 150/75 165/83 180/90 195/98 4501‐5000 130/65 145/73 160/80 175/88 190/95 205/103 5001‐5500 140/70 155/78 170/85 185/93 200/100 215/108 5501‐6000 150/75 165/83 180/90 195/98 210/105 225/113 Equation 11‐1 (0.02 x square feet of conditioned space) + [15 x (number of bedrooms + 1)] = Total ventilation rate (cfm) Total ventilation – The mechanical ventilation system shall provide sufficient outdoor air to equal the total ventilation rate average, for each one‐hour period according to the above table or equation. For heat recovery ventilators (HRV) and energy recovery ventila‐ tors (ERV) the average hourly ventilation capacity must be determined in consideration of any reduction of exhaust or out outdoor air intake, or both, for defrost or other equipment cycling. Continuous ventilation ‐ A minimum of 50 percent of the total ventilation rate, but not less than 40 cfm, shall be provided, on a con‐ tinuous rate average for each one‐hour period. The portion of the mechanical ventilation system intended to be continuous may have automatic cycling controls providing the average flow rate for each hour is met. 16411 ABERDEEN ST NE,HAM LAKE, MN 55304 2 Section B Ventilation Method (Choose either balanced or exhaust) Balanced, HRV (Heat Recovery Ventilator) or ERV (Energy Recov‐ ery Ventilator) – cfm of unit in low must not exceed continuous venti‐ lation rating by more than 100%. Exhaust only (Continuous fan rating in cfm) Low cfm: High cfm: Continuous fan rating in cfm (capacity must not exceed continuous ventilation rating by more than 100%) Directions ‐ Choose the method of ventilation, balanced or exhaust only. Balanced ventilation systems are typically HRV or ERV’s. Enter the low and high cfm amounts. Low cfm air flow must be equal to or greater than the required continuous ventilation rate and less than 100% greater than the continuous rate. (For instance, if the low cfm is 40 cfm, the ventilation fan must not exceed 80 cfm.) Automatic controls may allow the use of a larger fan that is operated a percentage of each hour. Section C Ventilation Fan Description Location Continuous Intermittent Directions ‐ The ventilation fan schedule should describe what the fan is for, the location, cfm, and whether it is used for continuous or intermittent ventilation. The fan that is chose for continuous ventilation must be equal to or greater than the low cfm air rating and less than 100% greater than the continuous rate. (For instance, if the low cfm is 40 cfm, the continuous ventilation fan must not exceed 80 cfm.) Automatic controls may allow the use of a larger fan that is operated a percentage of each hour. Section D Ventilation Controls Directions ‐ Describe operation and control of the continuous and intermittent ventilation. There should be adequate detail for plan reviewers and inspectors to verify design and installation compliance. Related trades also need adequate detail for placement of controls and proper operation of the building ventilation. If exhaust fans are used for building ventilation, describe the operation and location of any controls, indicators and legends. If an ERV or HRV is to be installed, describe how it will be installed. If it will be connected and interfaced with the air handling equipment, please describe such connections as detailed in the manufactures’ installation instructions. If the installation instructions require or recommend the equipment to be interlocked with the air handling equipment for proper operation, such interconnection shall be made and described. 3 Section E Make‐up air Passive (determined from calculations from Table 501.3.1) Powered (determined from calculations from Table 501.3.1) Interlocked with exhaust device (determined from calculation from Table 501.3.1) Other, describe: Location of duct or system ventilation make‐up air: Determined from make‐up air opening table Cfm Size and type (round, rectangular, flex or rigid) Directions ‐ In order to determine the makeup air, Table 501.3.1 must be filled out (see below). For most new installations, column A will be appropriate, however, if atmospherically vented appliances or solid fuel appliances are installed, use the appropriate column. For existing dwellings, see IMC 501.3.3. Please note, if the makeup air quantity is negative, no additional makeup air will be re‐ quired for ventilation, if the value is positive refer to Table 501.3.2 and size the opening. Transfer the cfm, size of opening and type (round, rectangular, flex or rigid) to the last line of section D. The make‐up air supply must be installed per IMC 501.3.2.3. Table 501.3.1 PROCEDURE TO DETERMINE MAKEUP AIR QUANITY FOR EXHAUST EQUIPMENT IN DWELLINGS (Additional combustion air will be required for combustion appliances, see KAIR method for calculations) One or multiple power vent or direct vent appliances or no combustion appliances Column A One or multiple fan‐ assisted appliances and power vent or direct vent appliances Column B One atmospherically vent gas or oil appliance or one solid fuel appliance Column C Multiple atmospherically vented gas or oil appliances or solid fuel appliances Column D 1. a) pressure factor (cfm/sf) 0.15 0.09 0.06 0.03 b) conditioned floor area (sf) (including unfinished basements) Estimated House Infiltration (cfm): [1a x 1b] 2. Exhaust Capacity a) continuous exhaust‐only ventilation system (cfm); (not applicable to balanced ventilation systems such as HRV) b) clothes dryer (cfm) 135 135 135 135 c) 80% of largest exhaust rating (cfm); Kitchen hood typically (not applicable if recirculating system or if powered makeup air is electrically interlocked and match to exhaust) d) 80% of next largest exhaust rating (cfm); bath fan typically (not applicable if recirculating system or if powered makeup air is electrically interlocked and matched to exhaust) Not Applicable Total Exhaust Capacity (cfm); [2a + 2b +2c + 2d] 3. Makeup Air Quantity (cfm) a) total exhaust capacity (from above) b) estimated house infiltration (from above) Makeup Air Quantity (cfm); [3a – 3b] (if value is negative, no makeup air is needed) 4. For makeup Air Opening Sizing, refer to Table 501.4.2 A. Use this column if there are other than fan‐assisted or atmospherically vented gas or oil appliance or if there are no combustion appliances. (Power vent and direct vent appliances may be used.) B. Use this column if there is one fan‐assisted appliance per venting system. (Appliances other than atmospherically vented appliances may be included.) C. Use this column if there is one atmospherically vented (other than fan‐assisted) gas or oil appliance per venting system or one solid fuel appliance. D. Use this column if there are multiple atmospherically vented gas or oil appliances using a common vent or if there are atmospherically vented gas or oil appliances and solid fuel appliances. 4 Makeup Air Opening Table for New and Existing Dwelling Table 501.3.2 One or multiple power vent, direct vent appliances, or no combustion appliances Column A One or multiple fan‐ assisted appliances and power vent or direct vent appliances Column B One atmospherically vented gas or oil appliance or one solid fuel appliance Column C Multiple atmospherically vented gas or oil appliances or solid fuel appliances Column D Duct diameter Passive opening 1 – 36 1 – 22 1 – 15 1 – 9 3 Passive opening 37 – 66 23 – 41 16 – 28 10 – 17 4 Passive opening 67 – 109 42 – 66 29 – 46 18 – 28 5 Passive opening 110 ‐ 163 67 – 100 47 – 69 29 – 42 6 Passive opening 164 – 232 101 – 143 70 – 99 43 – 61 7 Passive opening 233 – 317 144 – 195 100 – 135 62 – 83 8 Passive opening w/motorized damper 318 – 419 196 – 258 136 – 179 84 – 110 9 Passive opening w/motorized damper 420 – 539 259 – 332 180 – 230 111 – 142 10 Passive opening w/motorized damper 540 – 679 333 – 419 231 – 290 143 – 179 11 Powered makeup air >679 >419 >290 >179 NA Notes: A. An equivalent length of 100 feet of round smooth metal duct is assumed. Subtract 40 feet for the exterior hood and ten feet for each 90‐ degree elbow to determine the remaining length of straight duct allowable. B. If flexible duct is used, increase the duct diameter by one inch. Flexible duct shall be stretched with minimal sags. Compressed duct shall not be accepted. C. Barometric dampers are prohibited in passive makeup air openings when any atmospherically vented appliance is installed. D. Powered makeup air shall be electrically interlocked with the largest exhaust system. Section F Combustion Not required per mechanical code (No atmospheric or power vented appliances) Passive (see IFGC Appendix E, Worksheet E‐1) Size and type Other, describe: Explanation ‐ If no atmospheric or power vented appliances are installed, check the appropriate box, not required. If a power vented or atmospherically vented appliance installed, use IFGC Appendix E, Worksheet E‐1 (see below). Please enter size and type. Combustion air vent supplies must communicate with the appliance or appliances that require the combustion air. Section F calculations follow on the next 2 pages. 5 Directions ‐ The Minnesota Fuel Gas Code method to calculate to size of a required combustion air opening, is called the Known Air Infiltration Rate Method. For new construction, 4b of step 4 is required to be filled out. IFGC Appendix E, Worksheet E‐1--Residential Combustion Air Calculation Method (for Furnace, Boiler, and/or Water Heater in the Same Space) Step 1: Complete vented combustion appliance information. Furnace/Boiler: Draft Hood Fan Assisted Direct Vent Input: ______________________Btu/hr or Power Vent Water Heater: Draft Hood Fan Assisted Direct Vent Input: ______________________Btu/hr or Power Vent Step 2: Calculate the volume of the Combustion Appliance Space (CAS) containing combustion appliances. The CAS includes all spaces connected to one another by code compliant openings. CAS volume: ft3 L x W x H L W H Step 3: Determine Air Changes per Hour (ACH)1 Default ACH values have been incorporated into Table E‐1 for use with Method 4b (KAIR Method). If the year of construction or ACH is not known, use method 4a (Standard Method). Step 4: Determine Required Volume for Combustion Air. (DO NOT COUNT DIRECT VENT APPLIANCES) 4a. Standard Method Total Btu/hr input of all combustion appliances Input: Btu/hr Use Standard Method column in Table E‐1 to find Total Required TRV: ft3 Volume (TRV) If CAS Volume (from Step 2) is greater than TRV then no outdoor openings are needed. If CAS Volume (from Step 2) is less than TRV then go to STEP 5. 4b. Known Air Infiltration Rate (KAIR) Method (DO NOT COUNT DIRECT VENT APPLIANCES) Total Btu/hr input of all fan‐assisted and power vent appliances Input: Btu/hr Use Fan‐Assisted Appliances column in Table E‐1 to find RVFA: ft3 Required Volume Fan Assisted (RVFA) Total Btu/hr input of all Natural draft appliances Input: Btu/hr Use Natural draft Appliances column in Table E‐1 to find RVNFA: ft3 Required Volume Natural draft appliances (RVNDA) Total Required Volume (TRV) = RVFA + RVNDA TRV = + = TRV ft3 If CAS Volume (from Step 2) is greater than TRV then no outdoor openings are needed. If CAS Volume (from Step 2) is less than TRV then go to STEP 5. Step 5: Calculate the ratio of available interior volume to the total required volume. Ratio = CAS Volume (from Step 2) divided by TRV (from Step 4a or Step 4b) Ratio =______ /_______ =_______________ Step 6: Calculate Reduction Factor (RF). RF = 1 minus Ratio RF = 1 ‐ __________________=__________________ Step 7: Calculate single outdoor opening as if all combustion air is from outside. Total Btu/hr input of all Combustion Appliances in the same CAS Input: Btu/hr (EXCEPT DIRECT VENT) Combustion Air Opening Area (CAOA): Total Btu/hr divided by 3000 Btu/hr per in2 CAOA =___________________/ 3000 Btu/hr per in2 =_____________________in2 Step 8: Calculate Minimum CAOA: Minimum CAOA = CAOA multiplied by RF Minimum CAOA =________________ x____________________ =__________ in2 Step 9: Calculate Combustion Air Opening Diameter (CAOD): CAOD = 1.13 multiplied by the square root of Minimum CAOA CAOD = 1.13 √ Minimum CAOA = in. diameter go up one inch in size if using flex duct 1 If desired, ACH can be determined using ASHRAE calculation or blower door test. Follow procedures in Section G304. 6 IFGC Appendix E, Table E‐1 Residential Combustion air (Required Interior Volume Based on Input Rating of Appliance) Input Rating (Btu/hr) Standard Method Known Air Infiltration Rate (KAIR) Method (cu ft) Fan Assisted or Power Vent Natural Draft 1994 to present Pre‐1994 1994 to present Pre‐1994 5,000 250 375 188 525 263 10,000 500 750 375 1,050 525 15,000 750 1,125 563 1,575 788 20,000 1,000 1,500 750 2,100 1,050 25,000 1,250 1,875 938 2,625 1,313 30,000 1,500 2,250 1,125 3,150 1,575 35,000 1,750 2,625 1,313 3,675 1,838 40,000 2,000 3,000 1,500 4,200 2,100 45,000 2,250 3,375 1,688 4,725 2,363 50,000 2,500 3,750 1,675 5,250 2,625 55,000 2,750 4,125 2,063 5,775 2,888 60,000 3,000 4,500 2,250 6,300 3,150 65,000 3,250 4,875 2,438 6,825 3,413 70,000 3,500 5,250 2,625 7,350 3,675 75,000 3,750 5,625 2,813 7,875 3,938 80,000 4,000 6,000 3,000 8,400 4,200 85,000 4,250 6,375 3,188 8,925 4,463 90,000 4,500 6,750 3,375 9,450 4,725 95,000 4,750 7,125 3,563 9,975 4,988 100,000 5,000 7,500 3,750 10,500 5,250 105,000 5,250 7,875 3,938 11,025 5,513 110,000 5,500 8,250 4,125 11,550 5,775 115,000 5,750 8.625 4,313 12,075 6,038 120,000 6,000 9,000 4,500 12,600 6,300 125,000 6,250 9,375 4,688 13,125 6,563 130,000 6,500 9,750 4,875 13,650 6,825 135,000 6,750 10,125 5,063 14,175 7,088 140,000 7,000 10,500 5,250 14,700 7,350 145,000 7,250 10,875 5,438 15,225 7,613 150,000 7,500 11,250 5,625 15,750 7,875 155,000 7,750 11,625 5,813 16,275 8,138 160,000 8,000 12,000 6,000 16,800 8,400 165,000 8,250 12,375 6,188 17,325 8,663 170,000 8,500 12,750 6,375 17,850 8,925 175,000 8,750 13,125 6,563 18,375 9,188 180,000 9,000 13,500 6,750 18,900 9,450 185,000 9,250 13,875 6,938 19,425 9,713 190,000 9,500 14,250 7,125 19,950 9,975 195,000 9,750 14,625 7,313 20,475 10,238 200,000 10,000 15,000 7,500 21,000 10,500 205,000 10,250 15,375 7,688 21,525 10,783 210,000 10,500 15,750 7,875 22,050 11,025 215,000 10,750 16,125 8,063 22,575 11,288 220,000 11,000 16,500 8,250 23,100 11,550 225,000 11,250 16,875 8,438 23,625 11,813 230,000 11,500 17,250 8,625 24,150 12,075 1. The 1994 date refers to dwellings constructed under the 1994 Minnesota Energy Code. The default KAIR used in this section of the table is 0.20 ACH. 2. This section of the table is to be used for dwellings constructed prior to 1994. The default KAIR used in this section of the table is 0.40 ACH. Date Certificate Posted x Passive (No Fan ) Active (With fan and monometer or other system monitoring device) Location (or future Location) of Fan: X R-15 X X R-20 X R-20 X R-21 X R-49 X R-49 X R-30 X Not applicable, all ducts located in conditioned space R-8 MECHANICAL SYSTEMS X Not required per mech. code Passive Powered Interlocked with exhaust device. Describe: Input in BTUS: 80000 Capacity in Gallons: Other, describe: AFUE or HSPF% 92% Cfm's " round duct OR " metal duct X Not required per mech. code Passive Low: Other, describe: X Low: Cfm's Capacity continuous ventilation rate in cfms: " round duct OR Total ventilation (intermittent + continuous) rate in cfms: " metal duct Location of duct or system: Select Type furnace room Heat Recover Ventilator (HRV) Capacity in cfms: Energy Recover Ventilator (ERV) Capacity in cfms: Describe any additional or combined heating or cooling systems if installed: (e.g. two furnaces or air source heat pump with gas back-up furnace Combustion Air Select a Type Balanced Ventilation Capcity in CFMS: High: High: Mechanical Ventilation System Rating or Size SEER or EER 80 Output in Tons:3 Efficiency RESIDENTIAL LOAD CALC 13 Locations of Fans, describe: STEFFES 73 145 ELECTRIC R-410A Cooling System Lakeville Plan ID Corbin Location of duct or system: Foundation Wall Perimeter of Slab on Grade Rim Joist (1st Floor) Ceiling, vaulted City Bay Windows or cantilevered areas RADON CONTROL SYSTEM Rim Joist (2nd Floor) Wall exterior Interior THERMAL ENVELOPE Insulation Location Foam, Closed CellFoam Open CellMineral FiberboardRigid, Extruded PolystyreneRigid, Isocynurate Appliances Interior Bryant Domestic Water Heater Heating System NAT GAS Bryant 912SB48080 Average U-Factor (excludes skylights and one door ) U: 0.29 Heating or Cooling Ducts Outside Conditioned Spaces Floors over unconditioned areas Describe other insulated areas Fuel Type Solar Heat Gain Coefficient (SHGC): Windows & Doors Model R-value0.28 STFH080C2X045 BA13NA036 Per R401.3 Building Certificate. A building certificate shall be posted on or in the electrical distribution panel.8/8/18 AIR MECHANICAL New Construction Energy Code Compliance Certificate Name of Residential Contractor Country Joe Homes MN License Number BC627670 Mailing Address of the Dwelling or Dwelling Unit Corbin8416 197th Street W. - Legacy 2nd Add. Other Please Describe Here HEAT LOSS 57966 HEAT GAIN 21551 COOLING LOAD 30279 Building Envelope air Tightness:Duct system air tightness: Below Entire Slab Ceiling, flat Total R-Value of all Types of InsulationType: Check All That Apply Non or Not ApplicableFiberglass, BlownFiberglass, Batts Manufacturer Make-up Air Select a Type