HomeMy WebLinkAboutLA159959 HVAC Forms
HVAC Load Calculations
for
Country Joe Homes
8651 197th St W
Lakeville, MN 55044
Prepared By:
Samantha Lykke
Air Mechanical
16411 Aberdeen St NE
Ham Lake, MN 55304
Monday, August 06, 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:Thursday, July 19, 2018
Client Name:Country Joe Homes
Client Address:8651 197th St W
Client City:Lakeville, MN 55044
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 South
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:1,009 CFM Per Square ft.:0.273
Square ft. of Room Area:3,698 Square ft. Per Ton:1,401
Volume (ft³):21,970
Building Loads
Total Heating Required Including Ventilation Air:64,288 Btuh 64.288 MBH
Total Sensible Gain:22,698 Btuh 72 %
Total Latent Gain:8,965 Btuh 28 %
Total Cooling Required Including Ventilation Air:31,664 Btuh 2.64 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.
R:\ ...\8651 197th St W.rh9 Monday, August 06, 2018, 10:47 AM
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
135 CFM 70 CFM
Infiltration Actual:0.463 AC/hr 0.337 AC/hr
Above Grade Volume:Cu.ft.Cu.ft.X 21,970 X 21,970
10,166 Cu.ft./hr 7,395 Cu.ft./hr
X 0.0167 X 0.0167
Total Building Infiltration:169 CFM 123 CFM
Total Building Ventilation:78 CFM 78 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 (135 CFM), Construction: Average
Summer Infiltration Specified:0.190 AC/hr (70 CFM), Construction: Average
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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 0.1 517.4 141 141 141 2--5
2-Main Level Built-In 450 750 0.01 0.1 482.2 346 473 473 5--6
3-Upper Level Built-In 450 750 0.01 0.1 502.1 277 394 394 4--6
Other Ducts in System 1
Supply Main Trunk Built-In 650 900 0.003 0.1 807 764 1,009 1,009 12x15
SummarySummarySummarySummarySummarySummarySummarySummary
System 1
Heating Flow:764
Cooling Flow:1009
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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:1,228.0 sq.ft.Supply Air:141 CFM
Ceiling Height:8.0 ft.Supply Air Changes:0.9 AC/hr
Volume:9,824 cu.ft.Req. Vent. Clg:0 CFM
Number of Registers:2 Actual Winter Vent.:14 CFM
Runout Air:71 CFM Percent of Supply.:10 %
Runout Duct Size:5 in.Actual Summer Vent.:11 CFM
Runout Air Velocity:517 ft./min.Percent of Supply:8 %
Runout Air Velocity:517 ft./min.Actual Winter Infil.:8 CFM
Actual Loss:0.215 in.wg./100 ft.Actual Summer Infil.:6 CFM
Item
Description
Area
Quantity
-U-
Value
Htg
HTM
Sen
Loss
Clg
HTM
Lat
Gain
Sen
Gain
S -Wall-15B0-10sf-8 48 X 8 384 0.050 4.4 1,670 0.0 0 0
W -Wall-15B0-10sf-4 32 X 4 128 0.054 4.7 601 0.0 0 0
N -Wall-15B0-10sf-8 48 X 8 384 0.050 4.4 1,670 0.0 0 0
E -Wall-15B0-10sf-8 32 X 8 256 0.050 4.4 1,114 0.0 0 0
W -Wall-12F-0bw 32 X 4 110.5 0.065 5.7 625 0.6 0 69
W -Gls-4a shgc-0.34 0%S 17.5 0.320 27.8 487 36.3 0 635
Floor-21A-20 1 X 1228 1228 0.027 2.3 2,885 0.0 0 0
Subtotals for Structure:9,052 0 704
Infil.: Win.: 7.8, Sum.: 5.7 128 5.680 727 0.664 141 85
Ductwork:0 0
Equipment:900 1,200
Lighting:300 1,023
Room Totals:9,779 1,041 3,012
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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:1,228.0 sq.ft.Supply Air:473 CFM
Ceiling Height:9.0 ft.Supply Air Changes:2.6 AC/hr
Volume:11,052 cu.ft.Req. Vent. Clg:0 CFM
Number of Registers:5 Actual Winter Vent.:35 CFM
Runout Air:95 CFM Percent of Supply.:7 %
Runout Duct Size:6 in.Actual Summer Vent.:37 CFM
Runout Air Velocity:482 ft./min.Percent of Supply:8 %
Runout Air Velocity:482 ft./min.Actual Winter Infil.:88 CFM
Actual Loss:0.145 in.wg./100 ft.Actual Summer Infil.:64 CFM
Item
Description
Area
Quantity
-U-
Value
Htg
HTM
Sen
Loss
Clg
HTM
Lat
Gain
Sen
Gain
S -Wall-12F-0bw 48 X 9 352 0.065 5.7 1,991 0.6 0 220
W -Wall-12F-0bw 32 X 9 288 0.065 5.7 1,629 0.6 0 180
N -Wall-12F-0bw 48 X 9 303 0.065 5.7 1,713 0.6 0 189
E -Wall-12F-0bw 32 X 9 280 0.065 5.7 1,583 0.6 0 175
S -Door-11G 3 X 7 21 0.540 47.0 987 13.5 0 284
S -Door-11N 3 X 7 21 0.350 30.5 639 8.8 0 184
S -Gls-4a shgc-0.34 0%S (2)33 0.320 27.8 918 19.9 0 658
S -Gls-4a shgc-0.34 0%S 5 0.320 27.8 139 20.0 0 100
N -Gls-4a shgc-0.34 100%S (3)24 0.320 27.8 669 10.9 0 261
N -Gls-4agdoor shgc-0.34 100%S 42 0.320 27.8 1,169 10.9 0 459
N -Gls-4a shgc-0.34 100%S (3)63 0.320 27.8 1,755 10.9 0 687
E -Gls-4a shgc-0.34 0%S (2)8 0.320 27.8 222 36.3 0 290
UP-Ceil-16B-44 1228 X 1 1228 0.022 1.9 2,350 1.1 0 1,324
Subtotals for Structure:15,764 0 5,011
Infil.: Win.: 88.1, Sum.: 64.1 1,440 5.683 8,184 0.665 1,582 958
Ductwork:0 0
People: 200 lat/per, 230 sen/per:1 200 230
Equipment:1,200 2,200
Lighting:500 1,705
Room Totals:23,948 2,982 10,104
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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:1,242.0 sq.ft.Supply Air:394 CFM
Ceiling Height:8.0 ft.Supply Air Changes:2.4 AC/hr
Volume:9,936 cu.ft.Req. Vent. Clg:0 CFM
Number of Registers:4 Actual Winter Vent.:28 CFM
Runout Air:99 CFM Percent of Supply.:7 %
Runout Duct Size:6 in.Actual Summer Vent.:30 CFM
Runout Air Velocity:502 ft./min.Percent of Supply:8 %
Runout Air Velocity:502 ft./min.Actual Winter Infil.:73 CFM
Actual Loss:0.157 in.wg./100 ft.Actual Summer Infil.:53 CFM
Item
Description
Area
Quantity
-U-
Value
Htg
HTM
Sen
Loss
Clg
HTM
Lat
Gain
Sen
Gain
S -Wall-12F-0bw 48 X 8 324 0.065 5.7 1,832 0.6 0 202
W -Wall-12F-0bw 27 X 8 216 0.065 5.7 1,221 0.6 0 135
N -Wall-12F-0bw 48 X 8 317 0.065 5.7 1,793 0.6 0 198
E -Wall-12F-0bw 27 X 8 201 0.065 5.7 1,137 0.6 0 125
S -Gls-4a shgc-0.34 0%S (4)60 0.320 27.8 1,672 19.9 0 1,196
N -Gls-4a shgc-0.34 100%S (2)30 0.320 27.8 836 10.9 0 328
N -Gls-4a shgc-0.34 100%S 16 0.320 27.8 445 10.9 0 175
N -Gls-4a shgc-0.34 100%S 6 0.320 27.8 167 11.0 0 66
N -Gls-4a shgc-0.34 100%S 15 0.320 27.8 418 10.9 0 164
E -Gls-4a shgc-0.34 0%S 15 0.320 27.8 418 36.3 0 544
UP-Ceil-16B-44 1242 X 1 1242 0.022 1.9 2,377 1.1 0 1,339
Floor-20P-30 1 X 14 14 0.035 3.0 43 0.3 0 4
Subtotals for Structure:12,359 0 4,476
Infil.: Win.: 73.5, Sum.: 53.4 1,200 5.683 6,820 0.665 1,318 798
Ductwork:0 0
People: 200 lat/per, 230 sen/per:4 800 920
Equipment:900 1,200
Lighting:300 1,023
Room Totals:19,179 3,018 8,417
R:\ ...\8651 197th St W.rh9 Monday, August 06, 2018, 10:47 AM
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 1,228 9,779 141 2-5 517 3,012 1,041 141 141
2 Main Level 1,228 23,948 346 5-6 482 10,104 2,982 473 473
3 Upper Level 1,242 19,179 277 4-6 502 8,417 3,018 394 394
Ventilation 7,242 1,165 1,924
Humidification 4,140
System 1 total 3,698 64,288 764 22,698 8,965 1,009 1,009
System 1 Main Trunk Size:12x15 in.
Velocity:807 ft./min
Loss per 100 ft.:0.098 in.wg
Cooling System Summary
Cooling
Tons
Sensible/Latent
Split
Sensible
Btuh
Latent
Btuh
Total
Btuh
Net Required:2.64 72% / 28%22,698 8,965 31,664
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
R:\ ...\8651 197th St W.rh9 Monday, August 06, 2018, 10:47 AM
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.
Builders Associaton of Minnesota version 101014
New Construction Energy Code Compliance Certificate
Place your
logo here
Per R401.3 Certificate. A building certificate shall be posted on or in the electrical distribution
panel.
Date Certificate Posted
8/8/2018
Mailing Address of the Dwelling or Dwelling Unit City
8651 - 197th Street West - Legacy 1st Add.Lakeville
Name of Residential Contractor MN License Number
Country Joe Homes BC627670
THERMAL ENVELOPE RADON CONTROL SYSTEM
Insulation Location
Total R-Value of all Types ofInsulationType: Check All That Apply Passive (No Fan)Non or Not ApplicableFiberglass, BlownFiberglass, BattsFoam, Closed CellFoam Open CellMineral FiberboardRigid, Extruded PolystyreneRigid, IsocynurateActive (With fan and monometer or other
system monitoring device)
Location (or future location) of Fan:
Other Please Describe Here
Below Entire Slab X
Foundation Wall R-15 X
Perimeter of Slab on Grade X
Rim Joist (1st Floor)R-20 X
Rim Joist (2nd Floor+)R-20 X
Wall R-21 X
Ceiling, flat R-49 X
Ceiling, vaulted R-49 X
Bay Windows or cantilevered areas
Floors over unconditioned area R-30 X
Describe other insulated areas
Building envelope air tightness:Duct system air tightness:
Windows & Doors Heating or Cooling Ducts Outside Conditioned Spaces
Average U-Factor (excludes skylights and one door) U: 0.29 X Not applicable, all ducts located in conditioned space
Solar Heat Gain Coefficient (SHGC):0.28 R-8 R-value
MECHANICAL SYSTEMS Make-up Air Select a Type
Appliances Heating System Domestic Water
Heater Cooling System X Not required per mech. code
Fuel Type Natural gas ELECTRIC Electric Passive
Manufacturer BRYANT WESTINGHOUSE BRYANT Powered
Model 912SB48080 WEG100C2X045 BA13NA036 Interlocked with exhaust device.
Describe:
Rating or Size
Input in
BTUS:80,000 Capacity
in
Gallons:
100 Output
in Tons:3 Other, describe:
Efficiency
AFUE or
HSPF%92%SEER
/EER
13 Location of duct or system:
Residential Load Calculation Heating Loss Heating Gain Cooling Load
64,288 22,698 31,664 Cfm's
" round duct OR MECHANICAL VENTILATION SYSTEM " metal duct
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
X Not required per mech. code
Select Type (BALANCED)Passive
Heat Recover Ventilator (HRV) Capacity in cfms:Low: High:Other, describe:
X Energy Recover Ventilator (ERV) Capacity in cfms:Low: 85 High:170 Location of duct or system:
Balanced Ventilation capacity in cfms:FLEX MECH ROOM
Location of fan(s), describe: Cfm's
Capacity continuous ventilation rate in cfms: " FLEX OR
Total ventilation (intermittent + continuous) rate in cfms: " metal duct