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Scope of Work:

Install (3,860) LED 2x4 and 2x4 retrofit fixtures with Spacewise control and wireless
dimming capability

Install (260) LED high bay fixtures with Spacewise control and wireless dimming capability
Install (642) LED recessed can fixtures

Install (2,947) LED tubes and (1,644) LED drivers

Install (193) LED lamps

Install (47) LED round decorative fixtures

ECM 2 —- Controls Upgrade

EEI proposes installing a complete DDC system as an extension of the existing N4
Enterprise Supervisor.

Scope of work:

e Demo the existing VAV controllers, keeping the existing communication wiring
operational for the existing controllers.

e New BACnet IP DDC controllers, new space sensors with CO2, and new discharge
air sensors. Reuse existing control valves. Provide programming to reduce
minimum airflow when space temperature and CO2 levels are satisfied.

e Assistance in displaying building analytics software. Review analytics reports with
the team and retro-commission systems to remedy problem zones. Repeat this
monthly to fine tune the building HVAC systems.

e Assistance to the balancing contractor to calibrate VAVs, airflow stations, and
AHUs.

e Network controller hardware and software updates as needed.

ECM 3 -— Weatherization

EEI completed a detailed building audit. Suspected air leakage locations were verified
and opportunities to improve building performance and save energy were found. Air
leakage is caused by pressure differences subject to variations in wind velocity and
HVAC systems. In order to control heating and cooling loads, and allow the mechanical
systems to operate effectively, pressure differences from the outdoor environment to
the indoor building spaces must be controlled. The best way to do this is by tightening
the building envelope through insulating and air sealing. This will extend the life cycle
of the building by protecting it from the elements and minimizing moisture carried by
air which penetrates the building. Also, insulation and air sealing increases thermal
performance of the building and the comfort, health and safety of the building
occupants.

Scope of work:

Inspect exterior doors for deficiencies to the weather stripping and door sweeps. Install
new weather stripping and door sweeps as needed.

ECM 4 - Transformers

EEI evaluated the electrical systems of the s chool buildings and determined that the
existing transformers at Nashua South High School are standard efficiency models that
are not designed to handle the loads of modern facilities. The most common efficiency

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for commercial and industrial transformers supplying linear loads in the 30-150 kVA
range is 95%, as compared to 98% for a high efficiency model. Further, conventional
transformer losses, which are non-linear, increase by 2.7 times when _ feeding
computer loads.

EEI recommends the replacement of existing inefficient transformers in order to improve
the energy efficiency ofthe electricaldistribution systems through the replacement
of the transformers with new high efficiency units. The scope of work for this measure
would include:

30 Transformers

(6) 15 kVA
(2) 45 kVA
(2) 75 kVA
(8) 112.5 kVA
(3) 150 kVA
(5) 220 kVA
(1) 225 kVA
(2) 300 kVA
(1) 400 kVA

ECM 5 -— Retro Commissioning

This is an allowance for an engineering and maintenance team to install, repair, and
replace any damaged existing to remain equipment. Existing AHUs will include software
revisions to reduce energy consumption. Includes 5 years of analytics reports.

ECM 6 — Mini Splits
EEI proposes removing the (16) existing Mitsubishi ductless splits.

Furnish and install (16) new Mitsubishi condensing units of the same capacity of the
existing system. Counts are as follows: (4) 1-tonceiling cassette systems, (7) 1.5-ton
ceiling cassette systems, (1) 2-tonceiling Cassette system, (1) 1 ton wall mounted
system, (2) 1.5 ton wall systems, (1) 3.5 ton under ceiling system. New units will be
furnished with wind baffles for low ambient cooling and new wall mounted thermostats

Furnish and install (1) York cooling only system, 3.5-ton cooling
ECM 7 — Condensing Hot Water

The current water heating units are standard efficiency. This measure would be to
replace the current system with high efficiency condensing Lochinvar units Armor Floor
Mounted units with 98% efficiency. The units have a 5:1 turndown with stainless steel
heat exchanger. Scope to include new ASME storage tanks, expansion tanks, and
circulation pumps.

ECM 8 - Targeted Balancing

EEI proposes targeted balancing of the existing ventilation systems. When ventilation
units are over-ventilating it causes unnecessary conditioning of outside air. This

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measure would include checking the air flow at the diffusers to ensure that it meets
current code required flow.

ECM 9- Kitchen Hood

The existing kitchen exhaust systemhas a basic on/off operation. This results in the system
operating during times when it doesn’t need to be operating and conditioned air is
exhausted. This measure is for installing a Captive Aire unit with VFD drives on make-up air
and exhaust fans. A temperature sensor will be installed in the duct work and control
operation based on the temperature inside the duct.

ECM 10- Walk In Coolers

EEI recommends refrigeration controllers on walk-in coolers and freezers as wellas
installing electronically commutated (EC) motors on evaporator fans. A controller can
start/stop the evaporator fans when operation is unnecessary. The EC motors are 30%

more efficient thanthe standard two-pole motors. Energy savings will be realized by
reducing the runtime of the compressors and evaporator fans in addition to the reductionin
power load of the new fans. Each walk-in cooler or freezer will have a new EC fan motor and
blade installed as wellas a dedicated controller. In addition, controllers will be installed on
the freezer to optimize the operation of the electric defroster and door heater. The controller
unit senses when refrigerant has ceased flowing through the evaporator coil and controls
the fan motors. Door and frame heaters are controlled based on dew point, reducing their
run time by 95% in coolers and 60% in freezers. The controllers will reduce compressor and
evaporator runtime by up to 10%.

Calculations

Energy savings will result from both reducing the fan power and the efficient control of the
evaporator fans and door heaters. In general, EEI uses the following approach to determine
savings for this specific measure:

Cost of Existing Equipment = Existing kW x Cost per kWh x Existing Effective Full Load
Hours

Cost of Proposed Equipment Energy Savings = Existing kW x Cost per kWh x Full Load
Hours Using Control

Savings = Existing Equipment Costs- Proposed Equipment Costs

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Attachment 2 - Maintenance and Service Agreements

To ensure the guarantee School District must maintain equipment as required by
Operational and Maintenance Manuals / Manufacturer Recommendations of all
equipment provided under this contract.

For the measures that are guaranteed under IMPVP Option C, we have a reporting
and continuous monitoring process that involves the District’s current EMS System.
EEl has integrated our Analytics Software with the current EMS from which we
extract monthly data from the system for analysis. This information is used to
monitor system use and for the M&V of the Option C Measures. It is vitally
important to this process that the EMS be maintained and kept in proper working
order at all times. Changes to the EMS software may require updates and
modifications to our M&V Process. Changes to the EMS may adversely impact
energy and operational savings.

The form below is EEl’s M&V Continuing Services Agreement that starts at the
conclusion of the Warranty Period. First year M&V Service is covered under the
contract concurrent with the 1 year warranty.

Also included in this contract are years 2 through 5 M&V Continuing Services as
identified in the Contract Schedule of Values defined below. This M&V Continuing
Services agreement is a separate and distinct contract from any service contract
the District may have with the EMS Vendor or other service providers. During the
course of monitoring the systems if repairs and or replacement of system
components are identified the cost for those repairs will be extra to this agreement.

To extend the M&V Continuing Service Contract beyond that established in this
agreement (past 5 years) the District must sign the attached M&V Continuing
Service Contract and return to EEI prior to the expiration of the limit the cost
included in the construction project.

Form Contract -M&V Continuing Services Agreement

ESCO Contract — Nashua Schools & EEI, Inc 11/22/2019

Attachment 3 - Project Cost

eR rita

Nashua North High School

Cost for Installed
Measure $

Pele er Mad
E

Pree B Corea

Annual Electric
Savings (kWh)

Annual Natural CO? Emmisions

Gas Savings
(Therm)

Reduction
facie)

PT emarsha tts la 4

NNHS1 LED Lighting 31,294.417.00 $126.906.00 $292,500.00 819.236 0 579 To?
NNHS2 Controls Upgrade $1,077,300.00 $13,500.00 $27,000.00 54,634 2,373 54 99.38
NNHS3 Weatherization $50,000.00 $3,000.00 $20,000.00 338 5.112 at 5.81
NNHS4 Transformers $577,371.00 $67,243.00 $22,000.00 445,317 0 316 8.26
NNHS& Retro Commissioning 3262.060.00 $10,000.00 $36,000.00 39.487] 4,254 50 22.31
NNHS6 Mini Splits $119,700.00 $2,500.00] $ : 14,639 0 10 54.51
NNHS7 Condensing Hot Water $165,000.00 $2,500.00 $4,000.00 1.405 4,002 26 33.53
NNHS8 Targeted Balancing 375,000.00 - [3 : 0 0 0 NA
NNHS9 Kitchen Haod $3,500.00 $5,000.00 18,077] 4,763 38 401
NNHS10 Walk In Coolers $3500 $5,000.00 16,777] 0 12 11.92
Total NNHS 0,500.00} 1,409,911 21,304) 1,110} 14.10)
Nashua South High School
NSHS1 LED Lighting $1,438,242 00 $325,000.00 958,699 0 678 3.01
NSHS2 Contrals Upgrade $1,197,000.00 $10,568.33 $30,000.00 54,634 2,373 51 110.42
NSHS3 Weatherization $50,000.00 $5,162.28 $20,000.00 338 5,112 at 5.81
NSHS4 Transformers $430,920.00 $55,027.20 $20,000.00 477,275 0 337 8.86
NSHS& Retro Commissioning $262,080.00 $10,000.00 $36,000.00 37,251 4,248 49 23.09
NSHS6 Mini Splits $119,700.00 $2,500.00 $0.00 10.404 0 7 76.72
NSHS? Condensing Hot Water $165,000.00 $4,801.67] $4,000.00 1.405 4,902 26 33.53
NSHS8 Targeted Balancing $75,000.00 - 30.00 0 0 0 NA
NSHS9 Kitchen Hood $35,000.00 $3,500.00 $5,000.00 6.168 2,126 16 9.83
NSHS10 Walk In Coolers $35,000.00 $3,500.00 $5,000.00 24,700 0 iF 8.10
Total NSHS $3,807 ,942.00 $234,070.70) $444,000.00) 1,570,870} 18,660] 1,210| 14.37
Total $7,498,810.00 $466,719.70) $854,500.00) 2,980,781 39,964] 2,319] 14.24)
11/22/2019

ESCO Contract — Nashua Schools & EEI, Inc

Attachment 4 - Measurement and Verification Plan

ESCO Contract — Nashua Schools & EEI, Inc 11/22/2019

IKE]

ENERGY EFFICIENT INVESTMENTS ING.

Energy Efficient Investments, Inc.

Measurement and Verification
Annual Report
Period: 2016-2018 Baseline

For:

Nashua, NH School District

Prepared by:
EE], Inc.
Energy Advisors Group
Steve Tarantino, LEED AP O+M, EIT

Prepared on:

01/27/20

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ENERGY EFFICIENT INVESTMENTS INC.

Table of Contents

Energy Efficient Investment, Ine. 2.0000... nL rE E EEE OL bet bb be Ett inns 1
Nashua, NH School District. 00.00.00 000.cc ccc ccccccccc ccc cce cee ceeccecceveuscuseuseuseuseuseuseuseueeueeuseuseuveuseivensenvensensenses 1
Table of Comtents............ 000 ccc ence een ee eee eee e ee eee cee tee tect eee e eet H tt ntnttdenbeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeaenas 2
Trntroduction 0.0... eee ccc cece eee e eee e eee cece eee ee eee tee tee e eee e nee ttitnttententeeeeeeeeeeeeeeeeeeeeeeeeeeeeeneenas 3
IPMVP Approved M&V Options .....00...000 0c nn EEE DOL Lett G EEE E bi nns 3
Project OVETVIEW ....00.. UL EO DOLE EEE EE DOE SEE bn nebEE Enis 4
Baseline Development and Performance Period.......00....00.0 coco ee eee ebb none et tebe tii 18
Conditional Savings Guarantee ..00.0.000000 UL EEE ttn EERE nee bes 20
Appendix A - Utility Bills provided by School District .....0.....0000 coo cee ccc c een bette nen eet eee e tiie 21

ENERGY EFFICIENT INVESTMENTS INC.

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Introduction

This Measurement and Verification Plan has been prepared as a guide in determining the energy savings as a

result of the installed Energy Conservation Measures. In this document, EEI will show the baseline
calculations used to determine cost savings and how we can evaluate the installed measures to ensure the
Savings Guarantee is being satisfied.

EEI utilized the International Performance Measurement & Verification Protocol, 2002 Revision as a
technical reference for this document. In the Savings Measurement & Calculation section of this document,

EEI has prepared a spreadsheet that will be used to calculate and document savings throughout the guarantee

period. The M&V Options to be used are outlined in the Project Overview section of this document.

EEI will submit a Measurement & Verification Report to the customer twice annually throughout the

guarantee period.

IPMVP Approved M&V Options

or systems; engineering estimates, spot-, short-term, orlong-term
measurements of sy stem components; and long-term whole-building utility
meter data. Afterthe model has been calibrated, savings are determined by
comparing a simulation of the baseline witheithera simulation of the
performance period or actual utility data.

M&V Option Performance! and Usage? Factors Savings Calculation
Option A— This option is based on a combination of measured and estimated factors Direct measurements and
Retrofit Isolation with | when variations in factors are not expected. Measurements are spot or estimated values,
Key Parameter short-term and are taken at the component or system level, both inthe engineering calculations
Measurement baseline and post -installationcases. Measurements should include the key | and/or component or
performance parameter(s) which define the energy use of the ECM. system models often
Estimated factors are supported by historical or manufacturer’s data. developed through
Savings are determined by means ofengineering calculations of baseline regression analysis
and post-installation energy use basedon measured andestimatedvalues | Adjustments to models are
not typically required.
Option B— This option is based on periodic or continuous measurements of energy use | Direct measurements,
Retrofit Isolation with | taken at the component orsystem level when variations in factors are engineering calculations,
All Parameter expected. Energy orproxies of energy use are measured continuously . and/or component or
Measurement Periodic spot orshost-term measurements may suffice when variations in system models often
factors are not expected. Savings are determined from analysis of baseline | developed through
and reporting period energy use or proxies of energy use. regression analysis
Adjustments to models may
be required.
Option C- This option is based on long-term, continuous, whole-building utility Based on regression
Utility Data Analysis meter, facility level, orsub-meterenergy (or water) data. Savings are analy sis of utility meter
of Whole Building determined from analy sis of baseline and reporting period energy data. data to account forfactors
Typically, regression analysis is conducted to correlate with and adjust that drive energy use
energy use to independent vanables such as weather, but simple Adjustments to models are
comparisons may also be used. typically required.
Option D— Computer simulation soitware 1s usedto model energy performance of a Based on computer
Calibrated Computer | whole-facility (or sub-facility). Implementation of simulation modeling simulation model (such as
Simulation requires engineering expertise. Inputs to the model include facility eQUEST or HAP)
characteristics; performance specifications of new and existing equipment | calibrated with whole-

building or end-use metered
data or both. Adjust ments
to models are required.

‘ Performance factorsindicate equipment or system performance characteristics, such askWiton fora chiller orwatts/fixture for lighting.

? Operating factorsindicate equipment or system operating characteristics such as annual cooling ton-hours for chillers or operating

hours forlighting.

ENERGY EFFICIENT INVESTMENTS INC.

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Project Overview

1, PROJECT SUMMARY

The goal of this project is to achieve energy savings through upgrades to the buildings’
electrical, plumbing, mechanical, and building envelope. This project will result in improved
building performance, thereby reducing energy and maintenance costs.

School Address SF
Nashua North High School 8 Titan Way 420,000
Nashua South High School 36 Riverside St. 430,000

2. M&V OPTION SUMMARY

ECM: Nashua North High School M&V Option Used
1. LED Lighting Option A
2. Controls Upgrade Option C
3. Weatherization Option C
4, Transformers Option B
5, Retro-Commissioning Option C
6. Mini Splits Option B
7, Condensing Hot Water Option A
8. Targeted Balancing Option A
9. Kitchen Hood Option B
10, Walk In Coolers Option B