22140 LVRC LCCA.pdf

30-Year Life Cycle Cost Analysis

Las Vegas Readiness Center

6600 Range Road

Las Vegas, NV 89165

Prepared by

Etchemendy Engineering INC

10597 Double R Blvd

Reno, Nevada 89521

June 15th, 2023

Table of Contents

Cover Page

Table of Contents

Report

Appendix A – Plant Water Demand Calculations

Appendix B – Plant #1 System #1 Investment Analysis

System #1 Initial Investment

System #1 Replacement Costs

System #1 Maintenance Costs

Appendix C – Plant #1 System #2 Investment Analysis

System #2 Initial Investment

System #2 Replacement Costs

System #2 Maintenance Costs

Appendix D – Plant #1 System #1 - System #2 BLCC Calculations

Appendix E – Plant #2 System #1 Investment Analysis

System #1 Initial Investment

System #1 Replacement Costs

System #1 Maintenance Costs

Appendix F – Plant #2 System #2 Investment Analysis

System #2 Initial Investment

System #2 Replacement Costs

System #2 Maintenance Costs

Appendix G – Plant #2 System #1 - System #2 BLCC Detailed Life-Cycle

General Scope

This life-cycle cost analysis has been developed to examine two separate water heating replacement scenarios for the existing Las Vegas Readiness Center located at the 6600 Rand Road in Las Vegas, Nevada. Within this facility there are two separate domestic hot water systems serving the building. One system is a single storage gas-fired water heater serving the commerical style kitchen. The other system utilizes (2) two storage gas-fired water heaters serving the remainder of the buidling. This study will cover both systems in the building and is at the request from Nevada Army National Guard Office of Installation and Environment Scope of Work summary dated August 12, 2022.

The existing building is comprised of ±80,460 square feet of office, assembly and kitchen areas.

Calculation Basis

The following criteria were used in determining the water heating loads & usages for systems.

Location: Las Vegas, NV Elevation: 2,050 ft Schedule: 6 am – 6 pm Sun-Sun

Domestic Hot Water Temperature Req: Ground Water = 57°F, Hot Water Setpoint = 130°F, ΔT 73°F Leaving Water Temp: Plant #1 = 105°F minimum delivery to showers Plant #2 = 110°F minimum delivery to kitchen faucets/dishwasher

Water Rate: $1.40/1,000 gallons Electrical Rate: $0.12 kWh – (Facility & Demand Charge Avg = $1,000) Gas Rate: $1.05/therm – (Facility & Demand Charge Avg = $400) Utility rates used were obtained from recent billing statement for the facility

System Descriptions & Construction Feasability

Original System The existing building plant domestic water heating system (Plant #1) utilizes two State model SUF100199NE gas-fired storage water heaters. Each water heater has a 100 gallon tank capacity, 199,900 btuh gas input and a 227.76 gal/hr recovery. These water heaters feed all fixtures within the building with the exception of the commercial kitchen. The estimated demand of this system is approximated at 28 gallons a minute @ 105°F leaving water temperature (LWT). It was determined that the worst case load on the heater were if all showers were in use simultaneously. This calculation can be found in Appendix A Table A1 on how to gallons per minute were calculated.

The second domestic water heating system (Plant #2) in this building serves only the commercial style kitchen. This hot water heating system is a State model SUF100199NE gas-fired storage heater with 100 gallon of storage and 199,999 btuh gas input. The estimated demand of this system is approximated at

13.5 gallons a minute. This can be found in Appendix A Table A2 on how to gallons per minute were calculated.

The building has a single gas service that runs through the building at 5 psi according to asbuilt drawings.

This 5 psi gas line is routed to two regulators. These regulators reduce the pressure from 5 psi to 7” w.c.

The first regulator is located in the mechanical room and serves two existing heating hot water boilers and plant #1 existing domestic hot water heaters. This regulator is set at 3000 CFH. Second regulator is located above the ceiling at the entrance to the commercial kitchen. This regulator is sized for 762 CFH and serves plant #2 existing domestic hot water heater.

Existing Flue piping is routed in 3” CPVC through the roof. Concentric terminations were not used and therefore there are (2) flue, (2) combustion air for the plant water heater system and (1) flue, (1) combustion air for the kitchen water heater system.

Existing plant and kitchen hot water systems have hot water recirculation installed. For this report this existing hot water recirculation system is to remain in place and be utilized by both proposed systems.

Energy losses incurred by the recirculation system are assumed to be consistent in the considered system scenarios and therefore will be considered the same energy cost in the life cycle cost calculations.

Proposed Plant #1 System #1 – Intellihot Instantaneous Water Heating System The proposed replacment equipment for plant system #1 are (3) three Intellihot model iQ251. This domestic water heating system is an on demand instananeous water heater. This water heater is constrcuted of 316L Stainless Steel. These heaters have the ability to be rack mounted and accomodate multiple heaters of the same size. When connected these heaters will internally be able to cascade and have an individual turn down ratio of 8.3:1. This product is Energy Star certified with a thermal efficiency of 0.96 and a uniform energy factor of 0.93.

Each of these Intellihot water heaters can produce 10.3 gpm @ 48°F ΔT. In order to achieve the 28-gpm requirement, it is or recommendation that (3) of these units be installed. Three units would require 753,000 btuh of gas input. The new total load of the regulator at the boiler room would be 3,353 CFH.

This is an increase of 353 CFH when compared to the current load listed on the as-built drawings. Based on initial investigation of the regulator the existing regulator is capable of 5,700 CFH. The downstream piping of the regulator is 2-½”. According to 2018 UPC Table 1215.2(1) Natural gas piping less than 2psi @ 20’ developed length from the regulator to the appliance, A 2-½” pipe has the capacity of 4,400 CFH.

The branch piping to the existing water heater is 2” (larger than the as-built plans indicate as 1”). This 2” is sufficient to carry the capacity of 753 CFH needed for the three Intellihot Water Heaters. There will be some downtime at the boilers to install a valve on the water heater branch line to modify the piping as necessary to connect the new water heaters.

Flue piping from these three units can be manifolded and vented together. Installation instructions indicate maximum distance for 3 units with 4” piping is 30 feet. Existing terminations will have to be increased from 3” to 4”.

This proposed system will require the installation of a water softner system per the manufacturer’s installation requirements. The manufacturer cannot gaurentee the warranty if the grains per gallon (gpg) exceed 11 gpg with an incoming pressure of 40 psi. Per Las Vegas Valley Water District 2022 water quality report it is documented that the hardiness in this area is approximately 265 ppm or 15 gpg. This will be an additional cost and maintenance item moving forward with the instataneous heaters.

Proposed Plant#1 System #2 – Rinnai Instantaneous Water Heating System The proposed equipment for plant system #2 is (4) four Rinnai model CU199i. This domestic water heating system is an on demand instananeous water heater. This water heater is constrcuted of Stainless Steel. Has the ability to be rack mounted and accomodate multiple heaters of the same size. When connected these heaters will internally be able to cascade and have an individual turn down ratio of 7.5:1.

This product is Energy Star certified with a thermal efficiency of 0.97 and a uniform energy factor of 0.93.

Each of these Rinnai water heaters can produce 7.8 gpm @ 48°F ΔT. In order to achieve the 28-gpm requirement, it is or recommendation that (4) of these units be installed. Four units would require 796,000 btuh of gas input. The total load of the regulator in the boiler room would be 3,396 CFH. This is an increase of 396 CFH when compared to the current load listed on the plans. As referenced in System #1 the existing gas regulator and piping are sufficient in size. Modifications to the branch piping will be necessary for the new water heater installation.

Flue piping from these four units can be manifolded and vented together. Installation instructions indicate maximum distance for 4 units with 4” piping is 65 feet. Existing terminations will have to be increased from 3” to 4”.

Rinnai’s I&OM indicates total hardness should not exceed 200 mg/L. The conversion of mg/L to ppm is nearly 1 mg/L = 1 ppm for water. With 265 ppm indicated as the hardness level in the area a softner will be necessary.

Proposed Plant #2 System #1 – Intellihot Instantaneous Water Heating System The proposed replacment equipment for plant system #2 are (2) two Intellihot model iQ251. Each of these Intellihot water heaters can produce 9.6 gpm @ 53°F ΔT. In order to achieve the 13.5-gpm requirement, it is or recommendation that (2) of these units be installed. Two units would require 502,000 btuh of gas input. The total load of the regulator at the kitchen room would be 1,064 CFH. This is an increase of 302 CFH when compared to the current load listed on the plans. Kitchen equipment gas loads are listed as 562 MBH. Based on initial investigation of the regulator the existing regulator is capable of 5,700 CFH. A ¾” medium pressure gas (mpg) pipe is routed from the boiler room to the kitchen. The total developed length of this pipe from the meter to regulator is estimated to be 500 feet, accounting for elevation & fittings. According to 2018 UPC Table 1215.2(6), the capacity of this pipe is 802 CFH. The added load to the system would be over the capacity per the plumbing code. In order for the 5 psi piping to be sufficiently size the piping would have to be replaced with 1”.

Flue piping from these two units can be manifolded and vented together. Installation instructions indicate maximum distance for 3 units with 4” piping is 65 feet. Existing terminations will have to be increased from 3” to 4”.

This proposed system will require the installation of a water softner system per the manufacturer’s installation requirements. The manufacturer cannot gaurentee the warranty if the grains per gallon (gpg) exceed 11 gpg with an incoming pressure of 40 psi. Per Las Vegas Valley Water District 2022 water quality report it is documented that the hardiness in this area is approximately 265 ppm or 15 gpg. This will be an additional cost and maintenance item moving forward with the instataneous heaters.

Proposed Plant#1 System #2 – Rinnai Instantaneous Water Heating System The proposed equipment for plant system #2 is (2) two Rinnai model CU199i. Each of these Rinnai water heaters can produce 7.8 gpm @ 53°F ΔT. In order to achieve the 13.5-gpm requirement, it is or recommendation that (2) of these units be installed. Two units would require 398,000 btuh of gas input.

The total load of the regulator in the kitchen room would be 960 CFH. This is an increase of 198 CFH when compared to the current load listed on the plans. As referenced in System #1 the existing gas regulator sufficient in size. The incoming piping feeding the regulator is undersized per the code and should be replaced with 1”.

Flue piping from these four units can be manifolded and vented together. Installation instructions indicate maximum distance for 2 units with 3” piping is 65 feet. Existing terminations can be utilized

Rinnai’s I&OM indicates total hardness should not exceed 200 mg/L. The conversion of mg/L to ppm is nearly 1 mg/L = 1 ppm for water. With 265 ppm indicated as the hardness level in the area a softner will be necessary.

Table 1 – Equipment Efficiencies

Annual Energy Consumption

Utilizing the system inputs as described; the resulting annual energy consumption for each of the three system is shown in Tables 2A & 2B below.

Table 2A – Building Annual Energy Consumption

System Manufacturer Model Qty Input Total Input UEF Min GPM Total GPM 1st Hour

#1 Intellihot iQ251 3 251,000 753,000 0.93 0.6 10.3 @ 48°F Rise 30.9 1,854

#2 Rinnai CU199i 4 199,000 796,000 0.93 0.4 7.8 @ 48°F Rise 31.2 1,872

GPM Recovery

System Manufacturer Model QTY

#1 Intellihot iQ251 3 6750.9 3.5

#2 Rinnai CU199i 4 7064.8 4.0

Total Therms

Used/ Year Yearly Useage (kWh)

Table 2B – Kitchen Annual Energy Consumption

Equipment Service Life

Equipment service lifespans have been obtained from the 2019 AHSRAE Applications Handbook, Chapter 38, Table 3 & 4, ASHRAE research project TRP-1237, and manufactuerer’s published data. All service lives shown in the table below were used in the NIST calculation for the 30-year total life-cycle cost. These life spans were utilized when determining total system cost when extrapolating over 30 years of life.

Table 3 – Equipment Service Life

Equipment Type Service Life (years) Gas-fired storage water heater 15 Gas-fired instantaneous water heater 20 Water softner system 15

Initial Construction Cost

Initial investment costs have been derived utilizing RS Means Online and vendor pricing. Costs include material, labor, and overhead & profit. A more detailed breakout of costs can be found in Appendix B, C, D, E, F & G. A summary of the costs have been shown in table 4 below.

Table 4 – Initial Cost Estimate

System Type Initial Investment

Plant #1 System #1 (Intellihot) $118,434 Plant #1 System #2 (Rinnai) $93,946 Plant #2 System #1 (Intellihot) $93,986 Plant #2 System #2 (Rinnai) $75,878

Final Investment

The final investment was derived using the National Institute of Standards (NIST) and Technology Applied Economics Office Engineering Laboratory’s Building Life-Cycle Cost Analysis tool version 5.3-22.

This 30-year life-cycle cost analysis has been developed to examine two separate domestic hot water plants. All information inputted has been documented from Appendix B thru Appendix G.

Table 5 – 30-Year Total Cost

System Type Final Investment

Plant #1 System #1 (Intellihot) $423,081 Plant #1 System #2 (Rinnai) $346,759 Plant #2 System #1 (Intellihot) $305,142 Plant #2 System #2 (Rinnai) $223,966

Conclusion

In both the building and the kitchen plant scenarios the Rinnai Instantanous system is the most cost effective solution when compared to the larger instantanous heaters manufacturered by Intellihot.

System Manufacturer Model QTY

#1 Intellihot iQ251 2 3855.6 2.4

#2 Rinnai CU199i 2 3096.4 2.0

Total Therms

Used/ Year Yearly Useage (kWh)

Appendix A Plant Water Demand Calculations

Table A1 – Plant Water Heater GPM demand

Hot Water Fixtures - Plant

Hot Water GPM Faucet

GPM QTY GPM Total GPM Diversity Diversity Outlet Temp

Lavatory 0.5 16 8 8.0 0% 0.0 105

Lavatory 0.5 1 0.5 0.5 0% 0.0 105

Service Sink 4.0 2 8 10.5 0% 0.0 120

Sink 1.5 1 1.5 1.5 0% 0.0 105

Shower 2.0 14 28 28.0 100% 28.0 105

TOTAL 46 TOTAL 28.0

Hot water GPM was determined based on a in instananeous flowrate through the water at the target leaving water temperature of the shower of 105°F.

Table A2 – Plant Water Heater Storage Capacity

Plant #1 Existing Capacity

Tank Size 200 Gallons

Useable Capacity 50%

Useable Tank 100 Gallons

Recovery 7.6 GPM

Shower Usage 23 GPM Avg

Minutes to Drain Tank 7.5 Minutes

Tank + Recovery 173.1 Gallons

Showers are hot water consumption assume to be 18 gpm on initial start and increase to 28 gpm as EWT decreases over time

Table A3 – Kitchen Water Heater GPM demand

Hot Water Fixtures - Kitchen

Hot Water GPM Faucet

GPM QTY GPM Total GPM Diversity Diversity Outlet Temp

3-Comp Sink 8 1 8 8.0 25% 2.0 110

Pre-Rinse 1.5 2 3 2.7 50% 1.4 105

Pot Filler 4 1 4 4.0 50% 2.0 110

Dishwasher 7 1 7 7.0 25% 1.8 110

Server Counter 1.5 1 1.5 1.4 50% 0.7 105

Prep Sink 1.5 2 3 2.7 50% 1.4 105

Hand Sink 1.5 2 3 2.7 50% 1.4 105

Lavatory 0.5 1 0.5 0.5 100% 0.5 105

Service Sink 4.0 1 4 4.0 50% 2.0 110

Wash System 1 1 1 1.0 50% 0.5 110

TOTAL 35 TOTAL 13.5

Hot water GPM was determined based on a mixed flowrate with an incoming hot water temperature of 130°F and an incoming cold water temperature 57°F.

Table A4 – Plant Water Heater Storage Capacity

Plant #2 Existing Capacity

Tank Size 100 Gallons

Useable Capacity 50%

Useable Tank 50 Gallons

Recovery 3.8 GPM

Fixture Usage 13.5 GPM Avg

Minutes to Drain Tank 5.3 Minutes

Tank + Recovery 70.9 Gallons

Fixtures diversity assumed across all fixtures with and average demand of 13.5 gpm on this system

Appendix B Plant #1 System #1 Investment Analysis

Intellihot Condensing Instantaneous Water Heater

LVRC

Initial Cost Investment

Opinion of Probable Construction Cost

6/15/2023

Intellihot Plant Etchemendy Engineering Inc.

10597 Double R Blvd

Reno, NV 89521

(775) 853-1131

DIVISION / DESCRIPTION UNIT QUANTITY UNIT COST TOTAL COST DIV.TOTAL

PLUMBING

Demolition Existing Plant EA 1 $2,500.00 $2,500.00

Intellihot iQ251 EA 3 $8,807.18 $26,421.53

Freestanding Mounting LUMP 1 $6,800.00 $6,800.00

Water Softening System EA 1 $6,150.00 $6,150.00

Roofing Work LUMP 1 $3,500.00 $3,500.00

Plant Installation LUMP 1 $47,245.83 $47,245.83

Controls LUMP 1 $5,000.00 $5,000.00

PLUMBING TOTAL $97,617.36

ELECTRICAL

Demolition LUMP 1 $1,500.00 $1,500.00

Water Heaters EA 3 $2,850.00 $8,550.00

ELECTRICAL TOTAL $10,050.00

SUBTOTAL $107,667.36

CONTINGENCY @ 10% $10,766.74

TOTAL CONSTRUCTION COST $118,434.09

INITIAL INVESTMENT COST

Opinion of Probable Construction Cost

6/15/2023

Intellihot Plant Etchemendy Engineering Inc.

10597 Double R Blvd

Reno, NV 89521

(775) 853-1131

DIVISION / DESCRIPTION UNIT QUANTITY UNIT COST TOTAL COST DIV.TOTAL

PLUMBING

Demolition Existing Plant EA 1 $2,500.00 $2,500.00

Intellihot iQ251 EA 3 $8,807.18 $26,421.53

Plant Installation LUMP 1 $31,705.83 $31,705.83

Controls LUMP 1 $5,000.00 $5,000.00

PLUMBING TOTAL $65,627.36

ELECTRICAL

Demolition LUMP 1 $800.00 $800.00

Water Heaters EA 3 $1,200.00 $3,600.00

ELECTRICAL TOTAL $4,400.00

SUBTOTAL $70,027.36

CONTINGENCY @ 10% $7,002.74

INFLATION @ 20 YEARS (3% / YR) $46,218.05

TOTAL CONSTRUCTION COST $123,248.14

YEAR REPLACEMENT

Opinion of Probable Construction Cost

6/15/2023

Intellihot Plant Etchemendy Engineering Inc.

10597 Double R Blvd

Reno, NV 89521

(775) 853-1131

EQUIPMENT QUANTITY HOURS/YR TOTAL HOURS YEARLY COST

Intellihot iQ251 3 2 6 $510

Water Softner 1 8 8 $680

TOTAL $1,190

$85

Maintenance Costs

Costs are based on a Maintenance Hourly Rate of

Appendix C Plant #1 System #2 Investment Analysis

Rinnai Condensing Instantaneous Water Heater

Opinion of Probable Construction Cost

6/15/2023

Rinnai Water Heater Etchemendy Engineering Inc.

10597 Double R Blvd

Reno, NV 89521

(775) 853-1131

DIVISION / DESCRIPTION UNIT QUANTITY UNIT COST TOTAL COST DIV.TOTAL

PLUMBING

Demolition Existing Plant EA 1 $2,500.00 $2,500.00

Rinnai CU199 EA 4 $2,437.50 $9,750.00

Rinnai CU199 w/ Freestanding Rack LUMP 1 $12,057.00 $12,057.00

Water Softening System EA 1 $6,150.00 $6,150.00

Roofing Work LUMP 1 $3,500.00 $3,500.00

Plant Installation LUMP 1 $33,548.40 $33,548.40

Controls LUMP 1 $5,000.00 $5,000.00

PLUMBING TOTAL $72,505.40

ELECTRICAL

Demolition LUMP 1 $1,500.00 $1,500.00

Water Heaters EA 4 $2,850.00 $11,400.00

ELECTRICAL TOTAL $12,900.00

SUBTOTAL $85,405.40

CONTINGENCY @ 10% $8,540.54

TOTAL CONSTRUCTION COST $93,945.94

Opinion of Probable Construction Cost

6/15/2023

Rinnai Water Heater Etchemendy Engineering Inc.

10597 Double R Blvd

Reno, NV 89521

(775) 853-1131

DIVISION / DESCRIPTION UNIT QUANTITY UNIT COST TOTAL COST DIV.TOTAL

PLUMBING

Demolition Existing Plant EA 1 $2,500.00 $2,500.00

Rinnai CU199 EA 4 $2,437.50 $9,750.00

Plant Installation LUMP 1 $11,700.00 $11,700.00

Controls LUMP 1 $5,000.00 $5,000.00

PLUMBING TOTAL $28,950.00

ELECTRICAL

Demolition LUMP 1 $800.00 $800.00

Water Heaters EA 4 $1,200.00 $4,800.00

ELECTRICAL TOTAL $5,600.00

SUBTOTAL $34,550.00

CONTINGENCY @ 10% $3,455.00

INFLATION @ 20 YEARS (3% / YR) $22,803.00

TOTAL CONSTRUCTION COST $60,808.00

Opinion of Probable Construction Cost

6/15/2023

Rinnai Water Heater Etchemendy Engineering Inc.

10597 Double R Blvd

Reno, NV 89521

(775) 853-1131

EQUIPMENT QUANTITY HOURS/YR TOTAL HOURS YEARLY COST

Rinnai CU199 4 2 8 $680

Water Softner 1 8 8 $680

TOTAL $1,360

$85

Appendix D BLCC Detailed Life Cycle Plant #1

System #1 thru System #2

NIST BLCC 5.3-22: Comparative Analysis Consistent with Federal Life Cycle Cost Methodology and Procedures, 10 CFR, Part 436, Subpart A

Base Case: Intellihot Instantaneous Water Heater

Alternative: Rinnai Instantaneous Water Heater

General Information

File Name:

Z:\22000\22140 LVRC Henderson Water Heater Study\LV Readines Center\NIST

Calcs\22140 LVRCBldg NIST Calcs.xml

Date of Study: Thu Jun 15 14:22:38 PDT 2023

Project Name: Las Vegas Readiness Center

Project Location: Nevada

Analysis Type: FEMP Analysis, Energy Project

Analyst: Bryan Tilton

Base Date: June 1, 2023

Service Date: October 1, 2024

Study Period: 30 years 0 months(June 1, 2023 through May 31, 2053)

Discount Rate: 3%

Discounting

Convention:

End-of-Year

Comparison of Present-Value Costs PV Life-Cycle Cost

Base Case Alternative Savings from Alternative

Initial Investment Costs:

Capital Requirements as of Base Date $118,435 $93,946 $24,489

Future Costs:

Energy Consumption Costs $122,071 $127,748 -$5,677

Energy Demand Charges $24,817 $24,817 $0

Energy Utility Rebates $0 $0 $0

Water Costs $0 $0 $0

Recurring and Non-Recurring OM&R Costs $34,510 $39,440 -$4,930

Capital Replacements $123,248 $60,808 $62,440

Residual Value at End of Study Period $0 $0 $0

Subtotal (for Future Cost Items) $304,646 $252,813 $51,833

Total PV Life-Cycle Cost $423,081 $346,759 $76,322

Net Savings from Alternative Compared with Base Case

PV of Non-Investment Savings -$10,607

- Increased Total Investment -$86,929

Net Savings $76,322

NOTE: Meaningful SIR, AIRR and Payback can not be computed unless incremental savings and total savings are both

NOTE: Meaningful SIR, AIRR and Payback can not be computed unless incremental savings and total savings are both positive.

Energy Savings Summary Energy Savings Summary (in stated units)

Energy -----Average Annual Consumption----- Life-Cycle

Type Base Case Alternative Savings Savings

Electricity 5.0 kWh 4.0 kWh 1.0 kWh 28.7 kWh

Natural Gas 6,750.9 Therm 7,065.0 Therm -314.1 Therm -9,002.9 Therm

Energy Savings Summary (in MBtu)

Energy -----Average Annual Consumption----- Life-Cycle

Type Base Case Alternative Savings Savings

Electricity 0.0 MBtu 0.0 MBtu 0.0 MBtu 0.1 MBtu

Natural Gas 675.1 MBtu 706.5 MBtu -31.4 MBtu -900.3 MBtu

Emissions Reduction Summary

Energy -----Average Annual Emissions----- Life-Cycle

Type Base Case Alternative Reduction Reduction

Electricity

CO2 1.71 kg 1.59 kg 0.12 kg 3.53 kg

SO2 0.00 kg 0.00 kg 0.00 kg 0.00 kg

NOx 0.00 kg 0.00 kg 0.00 kg 0.01 kg

Natural Gas

CO2 36,075.53 kg 37,754.02 kg -1,678.49 kg -48,109.85 kg

SO2 291.14 kg 304.69 kg -13.55 kg -388.26 kg

NOx 5.04 kg 44.50 kg -39.45 kg -1,130.79 kg

Total:

CO2 36,077.24 kg 37,755.61 kg -1,678.37 kg -48,106.32 kg

SO2 291.14 kg 304.69 kg -13.55 kg -388.26 kg

NOx 5.05 kg 44.50 kg -39.45 kg -1,130.78 kg

NIST BLCC 5.3-22: Detailed LCC Analysis

General Information

File Name:

Z:\22000\22140 LVRC Henderson Water Heater Study\LV Readines Center\NIST

Calcs\22140 LVRCBldg NIST Calcs.xml

Date of Study: Thu Jun 15 14:21:38 PDT 2023

Analysis Type: FEMP Analysis, Energy Project

Project Name: Las Vegas Readiness Center

Project Location: Nevada

Analyst: Bryan Tilton

Base Date: June 1, 2023

Service Date: October 1, 2024

Study Period: 30 years 0 months (June 1, 2023 through May 31, 2053)

Discount Rate: 3%

Discounting

Convention:

End-of-Year

Discount and Escalation Rates are REAL (exclusive of general inflation)

Alternative: Intellihot Instantaneous Water Heater Initial Cost Data (not Discounted)

Initial Capital Costs

(adjusted for price escalation)

Initial Capital Costs for All Components: $118,435

Component: Intellihot Instantaneous Water Heater

Cost-Phasing

Date Portion Yearly Cost

June 1, 2023 100% $118,435

Total (for Component) $118,435

Energy Costs: Intellihot Electric Usage

(base-year dollars)

Average Average Average Average

Annual Usage Price/Unit Annual Cost Annual Demand Annual Rebate

5.0 kWh $0.12000 $1 $1,000 $0

Energy Costs: Intellihot Gas Usage

(base-year dollars)

Average Average Average Average

Annual Usage Price/Unit Annual Cost Annual Demand Annual Rebate

6,750.9 Therm $1.05000 $7,088 $400 $0

Life-Cycle Cost Analysis

Present Value Annual Value

Initial Capital Costs $118,435 $6,043

Energy Costs

Energy Consumption Costs $122,071 $6,228

Energy Demand Charges $24,817 $1,266

Energy Utility Rebates $0 $0

Subtotal (for Energy): $146,888 $7,494

Water Usage Costs $0 $0

Water Disposal Costs $0 $0

Operating, Maintenance & Repair Costs

Component: Intellihot Instantaneous Water Heater

Annually Recurring Costs $34,510 $1,761

Non-Annually Recurring Costs $0 $0

Subtotal (for OM&R): $34,510 $1,761

Replacements to Capital Components

Component: Intellihot Instantaneous Water Heater $123,248 $6,288

Subtotal (for Replacements): $123,248 $6,288

Residual Value of Original Capital Components

Component: Intellihot Instantaneous Water Heater $0 $0

Subtotal (for Residual Value): $0 $0

Residual Value of Capital Replacements

Component: Intellihot Instantaneous Water Heater $0 $0

Subtotal (for Residual Value): $0 $0

Total Life-Cycle Cost $423,081 $21,586

Emissions Summary

Energy Name Annual Life-Cycle

Intellihot Electric Usage:

CO2 1.71 kg 48.99 kg

SO2 0.00 kg 0.01 kg

NOx 0.00 kg 0.03 kg

Intellihot Gas Usage:

CO2 36,075.53 kg 1,034,017.06 kg

SO2 291.14 kg 8,344.84 kg

NOx 5.04 kg 144.59 kg

Total:

CO2 36,077.24 kg 1,034,066.05 kg

SO2 291.14 kg 8,344.86 kg

NOx 5.05 kg 144.62 kg

Alternative: Rinnai Instantaneous Water Heater Initial Cost Data (not Discounted)

Initial Capital Costs

(adjusted for price escalation)

Initial Capital Costs for All Components: $93,946

Component: Rinnai Costs

Cost-Phasing

Date Portion Yearly Cost

June 1, 2023 100% $93,946

Total (for Component) $93,946

Energy Costs: Rinnai Electric Usage

(base-year dollars)

Average Average Average Average

Annual Usage Price/Unit Annual Cost Annual Demand Annual Rebate

4.0 kWh $0.12000 $0 $1,000 $0

Energy Costs: Rinnai Natural Gas

(base-year dollars)

Average Average Average Average

Annual Usage Price/Unit Annual Cost Annual Demand Annual Rebate

7,065.0 Therm $1.05000 $7,418 $400 $0

Life-Cycle Cost Analysis

Present Value Annual Value

Initial Capital Costs $93,946 $4,793

Energy Costs

Energy Consumption Costs $127,748 $6,518

Energy Demand Charges $24,817 $1,266

Energy Utility Rebates $0 $0

Subtotal (for Energy): $152,565 $7,784

Water Usage Costs $0 $0

Water Disposal Costs $0 $0

Operating, Maintenance & Repair Costs

Component: Rinnai Costs

Annually Recurring Costs $39,440 $2,012

Non-Annually Recurring Costs $0 $0

Subtotal (for OM&R): $39,440 $2,012

Replacements to Capital Components

Component: Rinnai Costs $60,808 $3,102

Subtotal (for Replacements): $60,808 $3,102

Residual Value of Original Capital Components

Component: Rinnai Costs $0 $0

Subtotal (for Residual Value): $0 $0

Residual Value of Capital Replacements

Component: Rinnai Costs $0 $0

Subtotal (for Residual Value): $0 $0

Total Life-Cycle Cost $346,759 $17,692

Emissions Summary

Energy Name Annual Life-Cycle

Rinnai Electric Usage:

CO2 1.59 kg 45.46 kg

SO2 0.00 kg 0.01 kg

NOx 0.00 kg 0.02 kg

Rinnai Natural Gas:

CO2 37,754.02 kg 1,082,126.91 kg

SO2 304.69 kg 8,733.11 kg

NOx 44.50 kg 1,275.38 kg

Total:

CO2 37,755.61 kg 1,082,172.37 kg

SO2 304.69 kg 8,733.12 kg

NOx 44.50 kg 1,275.40 kg

Appendix E Plant #2 System #1 Investment Analysis

Intellihot Condensing Instantaneous Water Heater

Opinion of Probable Construction Cost

6/15/2023

Intellihot Kitchen Plant Etchemendy Engineering Inc.

10597 Double R Blvd

Reno, NV 89521

(775) 853-1131

DIVISION / DESCRIPTION UNIT QUANTITY UNIT COST TOTAL COST DIV.TOTAL

PLUMBING

Demolition Existing Plant EA 1 $2,500.00 $2,500.00

Intellihot iQ251 EA 2 $8,807.18 $17,614.35

Freestanding Mounting LUMP 1 $6,800.00 $6,800.00

Water Softening System EA 1 $6,150.00 $6,150.00

Roofing Work LUMP 1 $3,500.00 $3,500.00

Plant Installation LUMP 1 $36,677.22 $36,677.22

Controls LUMP 1 $5,000.00 $5,000.00

PLUMBING TOTAL $78,241.57

ELECTRICAL

Demolition LUMP 1 $1,500.00 $1,500.00

Water Heaters EA 2 $2,850.00 $5,700.00

ELECTRICAL TOTAL $7,200.00

SUBTOTAL $85,441.57

CONTINGENCY @ 10% $8,544.16

TOTAL CONSTRUCTION COST $93,985.73

Opinion of Probable Construction Cost

6/15/2023

Intellihot Kitchen Plant Etchemendy Engineering Inc.

10597 Double R Blvd

Reno, NV 89521

(775) 853-1131

DIVISION / DESCRIPTION UNIT QUANTITY UNIT COST TOTAL COST DIV.TOTAL

PLUMBING

Demolition Existing Plant EA 1 $2,500.00 $2,500.00

Intellihot iQ251 EA 2 $8,807.18 $17,614.35

Plant Installation LUMP 1 $21,137.22 $21,137.22

Controls LUMP 1 $5,000.00 $5,000.00

PLUMBING TOTAL $46,251.57

ELECTRICAL

Demolition LUMP 1 $800.00 $800.00

Water Heaters EA 2 $1,200.00 $2,400.00

ELECTRICAL TOTAL $3,200.00

SUBTOTAL $49,451.57

CONTINGENCY @ 10% $4,945.16

INFLATION @ 20 YEARS (3% / YR) $32,638.04

TOTAL CONSTRUCTION COST $87,034.76

Opinion of Probable Construction Cost

6/15/2023

Intellihot Kitchen Plant Etchemendy Engineering Inc.

10597 Double R Blvd

Reno, NV 89521

(775) 853-1131

EQUIPMENT QUANTITY HOURS/YR TOTAL HOURS YEARLY COST

Intellihot iQ251 2 2 4 $340

Water Softner 1 8 8 $680

TOTAL $1,020

$85

Appendix F Plant #2 System #2 Investment Analysis

Rinnai Condensing Instantaneous Water Heater

Opinion of Probable Construction Cost

6/15/2023

Rinnai Kitchen Plant Etchemendy Engineering Inc.

10597 Double R Blvd

Reno, NV 89521

(775) 853-1131

DIVISION / DESCRIPTION UNIT QUANTITY UNIT COST TOTAL COST DIV.TOTAL

PLUMBING

Demolition Existing Plant EA 1 $2,500.00 $2,500.00

Rinnai CU199 EA 2 $2,437.50 $4,875.00

Rinnai CU199 w/ Freestanding Rack LUMP 1 $12,057.00 $12,057.00

Water Softening System EA 1 $6,150.00 $6,150.00

Roofing Work LUMP 1 $3,500.00 $3,500.00

Plant Installation LUMP 1 $27,698.40 $27,698.40

Controls LUMP 1 $5,000.00 $5,000.00

PLUMBING TOTAL $61,780.40

ELECTRICAL

Demolition LUMP 1 $1,500.00 $1,500.00

Water Heaters EA 2 $2,850.00 $5,700.00

ELECTRICAL TOTAL $7,200.00

SUBTOTAL $68,980.40

CONTINGENCY @ 10% $6,898.04

TOTAL CONSTRUCTION COST $75,878.44

Opinion of Probable Construction Cost

6/15/2023

Rinnai Kitchen Plant Etchemendy Engineering Inc.

10597 Double R Blvd

Reno, NV 89521

(775) 853-1131

DIVISION / DESCRIPTION UNIT QUANTITY UNIT COST TOTAL COST DIV.TOTAL

PLUMBING

Demolition Existing Plant EA 1 $2,500.00 $2,500.00

Rinnai CU199 EA 2 $2,437.50 $4,875.00

Plant Installation LUMP 1 $5,850.00 $5,850.00

Controls LUMP 1 $5,000.00 $5,000.00

PLUMBING TOTAL $18,225.00

ELECTRICAL

Demolition LUMP 1 $800.00 $800.00

Water Heaters EA 2 $1,200.00 $2,400.00

ELECTRICAL TOTAL $3,200.00

SUBTOTAL $21,425.00

CONTINGENCY @ 10% $2,142.50

INFLATION @ 20 YEARS (3% / YR) $14,140.50

TOTAL CONSTRUCTION COST $37,708.00

Opinion of Probable Construction Cost

6/15/2023

Rinnai Kitchen Plant Etchemendy Engineering Inc.

10597 Double R Blvd

Reno, NV 89521

(775) 853-1131

EQUIPMENT QUANTITY HOURS/YR TOTAL HOURS YEARLY COST

Rinnai CU199 2 2 4 $340

Water Softner 1 8 8 $680

TOTAL $1,020

$85

Appendix G BLCC Detailed Life Cycle Plant #2

System #1 thru System #

NIST BLCC 5.3-22: Comparative Analysis

Base Case: Intellihot Instantaneous Water Heater

Alternative: Rinnai Instantaneous Water Heater

General Information

File Name:

Z:\22000\22140 LVRC Henderson Water Heater Study\LV Readines Center\NIST

Calcs\22140 LVRC Kitchen NIST Calcs.xml

Date of Study: Thu Jun 15 14:26:23 PDT 2023

Project Name: Las Vegas Readiness Center

Project Location: Nevada

Analysis Type: FEMP Analysis, Energy Project

Analyst: Bryan Tilton

Base Date: June 1, 2023

Service Date: October 1, 2024

Study Period: 30 years 0 months(June 1, 2023 through May 31, 2053)

Discount Rate: 3%

Discounting

Convention:

End-of-Year

Comparison of Present-Value Costs PV Life-Cycle Cost

Base Case Alternative Savings from Alternative

Initial Investment Costs:

Capital Requirements as of Base Date $93,986 $75,879 $18,107

Future Costs:

Energy Consumption Costs $69,724 $55,982 $13,742

Energy Demand Charges $24,817 $24,817 $0

Energy Utility Rebates $0 $0 $0

Water Costs $0 $0 $0

Recurring and Non-Recurring OM&R Costs $29,580 $29,580 $0

Capital Replacements $87,035 $37,708 $49,327

Residual Value at End of Study Period $0 $0 $0

Subtotal (for Future Cost Items) $211,156 $148,087 $63,069

Total PV Life-Cycle Cost $305,142 $223,966 $81,176

Net Savings from Alternative Compared with Base Case

PV of Non-Investment Savings $13,742

- Increased Total Investment -$67,434

Net Savings $81,176

NOTE: Meaningful SIR, AIRR and Payback can not be computed unless incremental savings and total savings are both

NOTE: Meaningful SIR, AIRR and Payback can not be computed unless incremental savings and total savings are both positive.

Energy Savings Summary Energy Savings Summary (in stated units)

Energy -----Average Annual Consumption----- Life-Cycle

Type Base Case Alternative Savings Savings

Electricity 2.4 kWh 2.0 kWh 0.4 kWh 11.5 kWh

Natural Gas 3,856.0 Therm 3,096.0 Therm 760.0 Therm 21,783.5 Therm

Energy Savings Summary (in MBtu)

Energy -----Average Annual Consumption----- Life-Cycle

Type Base Case Alternative Savings Savings

Electricity 0.0 MBtu 0.0 MBtu 0.0 MBtu 0.0 MBtu

Natural Gas 385.6 MBtu 309.6 MBtu 76.0 MBtu 2,178.4 MBtu

Emissions Reduction Summary

Energy -----Average Annual Emissions----- Life-Cycle

Type Base Case Alternative Reduction Reduction

Electricity

CO2 0.82 kg 0.79 kg 0.03 kg 0.78 kg

SO2 0.00 kg 0.00 kg -0.00 kg -0.00 kg

NOx 0.00 kg 0.00 kg 0.00 kg 0.01 kg

Natural Gas

CO2 20,605.73 kg 16,544.44 kg 4,061.30 kg 116,407.14 kg

SO2 166.29 kg 133.52 kg 32.78 kg 939.44 kg

NOx 2.88 kg 19.50 kg -16.62 kg -476.31 kg

Total:

CO2 20,606.55 kg 16,545.23 kg 4,061.32 kg 116,407.92 kg

SO2 166.29 kg 133.52 kg 32.78 kg 939.44 kg

NOx 2.88 kg 19.50 kg -16.62 kg -476.30 kg

NIST BLCC 5.3-22: Detailed LCC Analysis

General Information

File Name:

Z:\22000\22140 LVRC Henderson Water Heater Study\LV Readines Center\NIST

Calcs\22140 LVRC Kitchen NIST Calcs.xml

Date of Study: Thu Jun 15 14:25:49 PDT 2023

Analysis Type: FEMP Analysis, Energy Project

Project Name: Las Vegas Readiness Center

Project Location: Nevada

Analyst: Bryan Tilton

Base Date: June 1, 2023

Service Date: October 1, 2024

Study Period: 30 years 0 months (June 1, 2023 through May 31, 2053)

Discount Rate: 3%

Discounting

Convention:

End-of-Year

Discount and Escalation Rates are REAL (exclusive of general inflation)

Alternative: Intellihot Instantaneous Water Heater Initial Cost Data (not Discounted)

Initial Capital Costs

(adjusted for price escalation)

Initial Capital Costs for All Components: $93,986

Component: Intellihot Instantaneous Water Heater

Cost-Phasing

Date Portion Yearly Cost

June 1, 2023 100% $93,986

Total (for Component) $93,986

Energy Costs: Intellihot Electric Usage

(base-year dollars)

Average Average Average Average

Annual Usage Price/Unit Annual Cost Annual Demand Annual Rebate

2.4 kWh $0.12000 $0 $1,000 $0

Energy Costs: Intellihot Gas Usage

(base-year dollars)

Average Average Average Average

Annual Usage Price/Unit Annual Cost Annual Demand Annual Rebate

3,856.0 Therm $1.05000 $4,049 $400 $0

Present Value Annual Value

Initial Capital Costs $93,986 $4,795

Energy Costs

Energy Consumption Costs $69,724 $3,557

Energy Demand Charges $24,817 $1,266

Energy Utility Rebates $0 $0

Subtotal (for Energy): $94,541 $4,824

Water Usage Costs $0 $0

Water Disposal Costs $0 $0

Operating, Maintenance & Repair Costs

Component: Intellihot Instantaneous Water Heater

Annually Recurring Costs $29,580 $1,509

Non-Annually Recurring Costs $0 $0

Subtotal (for OM&R): $29,580 $1,509

Replacements to Capital Components

Component: Intellihot Instantaneous Water Heater $87,035 $4,441

Subtotal (for Replacements): $87,035 $4,441

Residual Value of Original Capital Components

Component: Intellihot Instantaneous Water Heater $0 $0

Subtotal (for Residual Value): $0 $0

Residual Value of Capital Replacements

Component: Intellihot Instantaneous Water Heater $0 $0

Subtotal (for Residual Value): $0 $0

Total Life-Cycle Cost $305,142 $15,569

Emissions Summary

Energy Name Annual Life-Cycle

CO2 0.82 kg 23.51 kg

SO2 0.00 kg 0.01 kg

NOx 0.00 kg 0.02 kg

Intellihot Gas Usage:

CO2 20,605.73 kg 590,613.07 kg

SO2 166.29 kg 4,766.43 kg

NOx 2.88 kg 82.59 kg

Total:

CO2 20,606.55 kg 590,636.59 kg

SO2 166.29 kg 4,766.44 kg

NOx 2.88 kg 82.60 kg

Alternative: Rinnai Instantaneous Water Heater Initial Cost Data (not Discounted)

Initial Capital Costs

(adjusted for price escalation)

Initial Capital Costs for All Components: $75,879

Component: Rinnai Costs

Cost-Phasing

Date Portion Yearly Cost

June 1, 2023 100% $75,879

Total (for Component) $75,879

Energy Costs: Rinnai Electric Usage

(base-year dollars)

Average Average Average Average

Annual Usage Price/Unit Annual Cost Annual Demand Annual Rebate

2.0 kWh $0.12000 $0 $1,000 $0

Energy Costs: Rinnai Natural Gas

(base-year dollars)

Average Average Average Average

Annual Usage Price/Unit Annual Cost Annual Demand Annual Rebate

3,096.0 Therm $1.05000 $3,251 $400 $0

Life-Cycle Cost Analysis

Present Value Annual Value

Initial Capital Costs $75,879 $3,871

Energy Costs

Energy Consumption Costs $55,982 $2,856

Energy Demand Charges $24,817 $1,266

Energy Utility Rebates $0 $0

Subtotal (for Energy): $80,799 $4,122

Water Usage Costs $0 $0

Water Disposal Costs $0 $0

Operating, Maintenance & Repair Costs

Component: Rinnai Costs

Annually Recurring Costs $29,580 $1,509

Non-Annually Recurring Costs $0 $0

Subtotal (for OM&R): $29,580 $1,509

Replacements to Capital Components

Component: Rinnai Costs $37,708 $1,924

Subtotal (for Replacements): $37,708 $1,924

Residual Value of Original Capital Components

Component: Rinnai Costs $0 $0

Subtotal (for Residual Value): $0 $0

Residual Value of Capital Replacements

Component: Rinnai Costs $0 $0

Subtotal (for Residual Value): $0 $0

Total Life-Cycle Cost $223,966 $11,427

Emissions Summary

Energy Name Annual Life-Cycle

Rinnai Electric Usage:

CO2 0.79 kg 22.73 kg

SO2 0.00 kg 0.01 kg

NOx 0.00 kg 0.01 kg

CO2 16,544.44 kg 474,205.93 kg

SO2 133.52 kg 3,826.99 kg

NOx 19.50 kg 558.89 kg

Total:

CO2 16,545.23 kg 474,228.66 kg

SO2 133.52 kg 3,827.00 kg

NOx 19.50 kg 558.90 kg