2-ScopeofWork NavienTanklessWaterHeaters 20261028.pdf

INVITATION TO BID

and PROPOSAL

Scope of Work Specifications

THE HOUSING AUTHORITY

of the City of Allentown

1339 Allen Street Allentown, Pennsylvania 18102-2191

Section 4 Page 13

Navien Tankless Hot Water Heater Preventative Maintenance Service

Bid No. 2026-008-000-50-4430040

SCOPE OF WORK

II. TECHNICAL SPECIFICATIONS

A. Overview and Objective

1. Objective: Provide scheduled, routine preventative maintenance on the existing 169 Navien Tankless Hot Water Heaters located at Allentown Housing Authority’s (AHA) Cumberland Garden Properties in Allentown, PA 18103 and provide installation, replacement, and repair services on as needed basis. When a new installation or replacement is necessary, AHA will provide the Navien Tank and filter system to be installed. The winning bidder will be responsible for supplying additional material such as pipes, fittings, valves, and other material needed to complete the installation

2. Purpose: Regular maintenance optimizes energy efficiency, ensures safe operation, preserves the manufacturer’s warranty, and extends the overall lifespan of the appliance.

3. Scope: Covers all labor, tools, materials, and technical expertise required to ensure equipment safety, efficiency, and compliance with manufacturer specifications and local codes. AHA will provide the Navien tank replacement unit and filter system. The winning bidder will be responsible for supplying additional material such as pipes, fittings, valves, and other material needed to complete the installation Navien requires all installations to be performed by a licensed plumbing, HVAC, or mechanical contractor.

4. Tracking: Appendix I includes an equipment roster with the most up to date information available at the time of this Scope of Work. The winning bidder will be responsible for keeping the list updated with correct model and serial numbers while still providing this information on each service report.

B. Equipment Covered

1. Manufacturer: Navien, Inc.

2. Equipment Type: Condensing Tankless Water Heater / Combi-Boiler

3. Model Number: All, including, but not limited to NR180A, NP180SA, NPE-180A, NPE 180S2, NPE 210A, NPE-240A2

4. Installation Location: Inside mechanical closets within each unit.

C. Frequency of Routine Service

1. Service Interval: Preventative Maintenance (PM) will be performed once per calendar year.

2. Scheduling: Preventative Maintenance will be performed during normal business hours.

When the contract starts in January 2027, PM will be scheduled and performed as soon as possible. After PM is complete, AHA will determine if this work should be scheduled during specific months (i.e., August or September) going forward.

Section 4 Page 14

D. Scheduled Preventative Maintenance Services

The technician will perform the following multi-point maintenance checklist during each scheduled PM visit:

1. Descaling & Flushing (Core Task)

a. Isolate Unit: Close the cold-water inlet and hot water outlet isolation valves.

b. Flush Heat Exchanger: Connect a recirculation pump and hoses to the service valves.

Flush the primary and secondary heat exchangers for a minimum of 45 to 60 minutes using a descaling solution that is strictly non-corrosive and free of harsh mineral acids to remove scale and mineral buildup. Use of one of the following two recommended descaling solutions is required: 1.) Flow-Aide biodegradable descaler or 2.) Nu-Calgon Vital-Flo.

c. Rinse System: Flush the unit with clean fresh domestic water for 5 minutes to clear out all remaining descaling solution.

2. Component Cleaning & Inspection

a. Cold Water Inlet Filter: Remove, clean debris from the mesh screen, inspect the O-ring, and reinstall.

b. Air Intake Filter: Remove the screen, clean out dust/lint, and reinstall to ensure proper combustion airflow.

c. Flame Rod / Ionization Sensor: Inspect for carbon buildup, clean gently with a non-abrasive pad, and check alignment.

d. Igniter: Inspect for wear, cracking, or proper gapping.

e. Burner Assembly: Inspect the burner chamber for debris, blockages, or discoloration.

f. Scale Inhibitor Filter Cartridge: Must be replaced annually during PM. Supplied by contractor.

3. System Diagnostics & Operational Testing

a. Error Code Review: Access the Navien PCB digital display control panel to review and document past error history or active diagnostic codes.

b. Gas Pressure Check: Verify static and dynamic inlet gas pressures match manufacturer specifications.

c. Water Flow Check: Verify minimum flow rate triggers ignition and test the hot water output temperature stability.

d. Safety Controls: Test the high-limit switch, overheat cutoff, and water flow sensor functionality.

4. Venting & Drainage Inspection

a. Intake & Exhaust Venting: Inspect PVC/CPVC/Polypropylene pipes for tight joints, proper sloping, clear terminations, and absence of obstructions (bird nests, leaves).

Section 4 Page 15

b. Condensate Trap & Drain: Inspect, flush, and clean the internal condensate trap. Ensure the condensate neutralizer (if installed) is functioning and the media is not depleted.

c. Leak Check: Inspect all internal plumbing connections, gas lines, and external valves for leaks.

E. As Needed, On-demand Installation and Replacement Services.

This section outlines the professional requirements, installation steps, and compliance standards for replacing an existing Navien tankless water heater with a new Navien tankless unit (e.g., swapping an older NPE-180A for a newer NPE-180A2).

Because the utility infrastructure (gas, water, venting) is already configured for a tankless system, the scope focuses on safely removing the failed unit, assessing/reusing compliant existing infrastructure, and updating critical safety valves.

1. Project Evaluation & Disconnection

a. System Diagnostics: Confirm the complete failure or retirement parameters of the existing Navien unit. Review recent fault history on the digital panel if operable.

b. Utility Isolation: Shut off the dedicated gas supply valve, main cold-water intake, internal recirculation loops, and electrical power breaker.

c. System Draining: Hook up a hose to the low-point isolation drain valves. Safely drain all residual water trapped inside the primary and secondary stainless steel heat exchangers.

d. Demolition: Disconnect the water unions, gas flex line, condensate drain line, and PVC intake/exhaust collars. Unmount the old unit from the wall bracket and remove it from the premises for proper recycling/disposal.

2. Infrastructure Assessment & Preparation

a. Wall Bracket & Support: Inspect the existing wall backing matrix (Unistrut or plywood backing). Securely anchor the new Navien-provided wall mounting bracket, ensuring it is perfectly level.

b. Venting Evaluation: Inspect the existing 2-inch or 3-inch PVC/CPVC intake and exhaust runs. Verify the presence of proper sloping (¼-inch per foot backward toward the unit), secure joint welds, and clear exterior termination hoods. Note: If the existing venting is damaged or brittle, replacing the flue runs must be added to the scope.

c. Gas Line Validation: Confirm the existing gas drop features a functional sediment trap (drip leg) and a full-port ¾-inch shut-off valve.

3. Equipment Installation & Plumbing Connections

a. Unit Mounting: Hang the new Navien tankless unit onto the level wall bracket.

b. Valve Kit Replacement: Remove old service valves and install a brand-new hot/cold isolation valve kit (such as a Webstone® or Navien service kit). Do not reuse old isolation valves as internal seals degrade over time.

Section 4 Page 16

c. Safety Valves: Install a brand-new, factory-provided Temperature & Pressure (T&P) Relief Valve on the hot water side, routing a discharge line downward toward the floor.

d. Water Lines: Reconnect the existing ¾-inch hot, cold, and recirculation lines (if applicable) to the new valve kit utilizing plumbing press-fittings or copper unions.

4. Gas, Venting, & Condensate Integration

a. Gas Connection: Connect the gas supply inlet to the new unit utilizing a highly rated gas flex line or rigid black iron pipe.

b. Flue Connection: Secure the existing PVC/CPVC exhaust and air intake pipes into the top collars of the new Navien unit.

c. Condensate Management: Clean out the existing condensate trap or hook up the new unit's built-in trap. Replace the media inside the condensate neutralizer cartridge to ensure the highly acidic discharge is properly neutralized before hitting the floor drain.

5. Commissioning, Electrical, & Testing

a. Power Connection: Plug the unit into the existing dedicated, grounded 110V/120V AC outlet.

b. Gas & Water Bleeding: Purge air out of all hot and cold-water lines. Safely bleed air from the gas line before firing.

c. Leak Testing: Perform a gas leak test on all joints using a gas leak solution or electronic sniffer. Pressurize the water system and check all physical joints and internal loops for drips.

d. System Programming: Boot up the Navien EZNav™ control panel. Program the parameters according to the gas profile (Natural Gas vs. Liquid Propane), adjust the internal recirculation settings (if installing an "A2" model), and configure the output temperature (standard default is 120°F)

e. Cycle Testing: Fire up multiple hot water fixtures simultaneously to track steady temperature delivery, stable gas combustion pressure, and flawless fan/burner operation.

F. Deliverables & Documentation

1. Upon completion of each service visit, the technician will provide AHA with a written or digital Service Report including:

a. Unit address where Navien Tankless Hot Water Heater service was being performed.

b. Type of Service:

i. Preventative maintenance

ii. Replacement Installation

c. If preventative maintenance service is being performed, the correct model and serial number of the serviced Navien Tankless Hot Water Heater must be identified.

Section 4 Page 17

d. If a tank replacement is being performed, the correct model and serial number of both the serviced and the new Navien Tankless Hot Water Heater must be identified.

e. Current operational status and parameters (e.g., flow rate, temperature rise).

f. A list of cleared error codes (if any).

g. Deficiencies of component wear or items requiring future attention.

h. Confirmation of a successful descaling cycle, if applicable.

2. The Service Report will be sent to the following personnel:

a. Maintenance Supervisor

b. Property Manager

c. Purchasing Agent

d. Director of Maintenance Operations or Operations Staff

G. Exclusions

1. This agreement covers scheduled annual preventive maintenance and replacement of the Navien Tankless Water Heater only. The following items are explicitly excluded:

a. Repairs and Parts Replacement: A quote to repair including the cost of replacement parts (e.g., control boards, pumps, sensors) and the labor required to replace them if they fail due to normal wear and tear should be provided to the Maintenance Supervisor and Property Manager immediately. The Maintenance Supervisor and/or the Property Manager will make an immediate decision to have the work completed. Repair quotes will also be sent to the Purchasing Agent and the Director of Maintenance Operations.

b. Emergency Diagnostics: Diagnostic fees for system breakdowns outside of the scheduled maintenance window.

c. Water Quality Rectification: Installation or replacement of external water softeners, scale inhibitors, or replacing depleted condensate neutralizer media.

INTENTIONALLY LEFT BLANK

Appendix I

EQUIPMENT LIST

APPENDIX I

Address Phase Apt Mfg. Model No. Serial No.

Flush Heat

Exchanger

Clean Intake

Air Filter

Clean

Intake

Water

Filter

1104 S FILBERT ST PHASE 1 Navien

NR180A

NP180SA

9543J1161773092

2080N22XS101190 5/19/2023

1106 S FILBERT ST PHASE 1 Navien

NR180A 9543D11Z2732070

4/15/2021

1108 S FILBERT ST PHASE 1 Navien

NR180A 9543E1133142009

8/27/2021

1110 S FILBERT ST PHASE 1 APT A Bradford-White M4TW50T10FBN JF16781956

1110 S FILBERT ST PHASE 1 APT B Bradford-White RG1PV50S6N NB37300696

503 E CUMBERLAND ST PHASE 1 Navien

NR180A 9543K1211682025

1/5/2022

505 E CUMBERLAND ST PHASE 1 APT A Bradford White M4TW50T10FBN JF16781960

505 E CUMBERLAND ST PHASE 1 APT B Bradford White M4TW50T6FBN LD34285560

507 E CUMBERLAND ST PHASE 1 Navien

NR180A 9543J1211672022

Replaced 11/6/2025

509 E CUMBERLAND ST PHASE 1 Navien NPE-180A 7410T1610521356

511 E CUMBERLAND ST PHASE 1 Navien

NR180A 9543J1212878052

5/14/2021

513 E CUMBERLAND ST PHASE 1 Navien NR180A 9543C1212826057

514 E CUMBERLAND ST PHASE 1 Navien

NR180A

NP180A

9543C1212826057

KGD090804378

Bradford

White changed to

Navien on

4/3/2018.

515 E CUMBERLAND ST PHASE 1 Navien

NR180A 9543C1212826053

CIRCUIT BOARD REPLACED

8/12/20223

11/20/2025

517 E CUMBERLAND ST PHASE 1 Navien

NR180A

NPE 180S2

9543K1212886055 Replaced 10/11/2024

NO SERVICE REQUIRED

NO SERVICE REQUIRED

NO SERVICE REQUIRED

NO SERVICE REQUIRED

Description of Services (✓)

Recommendation(s)

WATER HEATERS

Cumberland Gardens - Phase I Created November 2016 - Updated May 2026

Replace/

Repair Date:

Water Heater

Address Phase Apt Mfg. Model No. Serial No.

Flush Heat

Exchanger

Clean Intake

Air Filter

Clean

Intake

Water

Filter

Description of Services (✓)

Recommendation(s)

WATER HEATERS

Cumberland Gardens - Phase I Created November 2016 - Updated May 2026

Replace/

Repair Date:

Water Heater

519 E CUMBERLAND ST PHASE 1 Navien

NR180A 9543M1212897104 1. HEAT EXCHANGER LEAKING

UNDER WARRANTY

2. SECOND REPLACEMENT AFTER

20 MONTHS

3/10/2021

11/29/2022

521 E CUMBERLAND ST PHASE 1 Navien

NR180A

NPE 180S2

9543M1212896054 3/18/2024

523 E CUMBERLAND ST PHASE 1 Navien

NR180A

NPE 180ANG

9543C1211622023

Replaced 5/29/2020

525 E CUMBERLAND ST PHASE 1 Navien NR180A 9543J1211672032

527 E CUMBERLAND ST PHASE 1 Navien

NR180A

NPE 180S2

9543J1211672028

Replaced 5/4/2024

529 E CUMBERLAND ST PHASE 1 Navien NR180A 9543E1211642001

531 E CUMBERLAND ST PHASE 1 Navien

NR180A 9543K1211682035

Replaced 4/5/2023

532 E CUMBERLAND ST PHASE 1 Navien NR180A 9543E11811546001

533 E CUMBERLAND ST PHASE 1 Navien NR180A 9543M1211692026 3/30/2026

534 E CUMBERLAND ST PHASE 1 Navien

NR180A 9543C1161122147

Replaced 7/25/2023

535 E CUMBERLAND ST PHASE 1 APT A Bradford White M4TW50T10FBN JF16781955

535 E CUMBERLAND ST PHASE 1 APT B Bradford White M4TW50T10FBN JF16781959

536 E CUMBERLAND ST PHASE 1 Navien

NR180A 9543D1181536010

3/10/2021

537 E CUMBERLAND ST PHASE 1 APT A Bradford White M4TW50T10FBN JF16781947

537 E CUMBERLAND ST PHASE 1 APT B Bradford White M4TW50T10FBN JF16781951

538 E CUMBERLAND ST PHASE 1 Navien

NR180A 9543K1161182145

3/26/2022

540 E CUMBERLAND ST PHASE 1 Navien

NR180A

NPE 180S2

9543J1181576008

2080V2490269C86 Replaced 12/6/2024

NO SERVICE REQUIRED

NO SERVICE REQUIRED

NO SERVICE REQUIRED

Address Phase Apt Mfg. Model No. Serial No.

Flush Heat

Exchanger

Clean Intake

Air Filter

Clean

Intake

Water

Filter

Description of Services (✓)

Recommendation(s)

WATER HEATERS

Cumberland Gardens - Phase I Created November 2016 - Updated May 2026

Replace/

Repair Date:

Water Heater

542 E CUMBERLAND ST PHASE 1 Navien NR180A 9543M1161192136

543 E CUMBERLAND ST PHASE 1 APT A Bradford White M4TW50T10FBN JF16781946

543 E CUMBERLAND ST PHASE 1 APT B Bradford White M4TW50T10FBN JF16781954

544 E CUMBERLAND ST PHASE 1 Navien

NR180A 9543M1161192144 NEEDS TO BE FLUSHED WITH

DESCALER

Replaced

1/29/2021

8/16/2023

10/16/2023

545 E CUMBERLAND ST PHASE 1 Navien

NR180A

NPE 180S2

9543C1210522073 Replaced 9/30/2024

546 E CUMBERLAND ST PHASE 1 Navien NR180A 9543C1161122143 Replaced heat exchanger only

555 E CUMBERLAND ST PHASE 1 Navien NR180A 9543M1212896056

557 E CUMBERLAND ST PHASE 1 Navien

NR180A

NPE 180S2

9543E1212846051

2080V2492069584 Replaced 3/5/2025

559 E CUMBERLAND ST PHASE 1 Navien

NR180A 9543E1210542011 REPLACED AFTER 8 MONTHS

DUE TO INTERNAL CONNECTION

12/23/2021

8/15/2022

561 E CUMBERLAND ST PHASE 1 Navien

NR180A

NPE 180S2

9543K1210582075

2080T2492049212 Replaced 1/6/2025

563 E CUMBERLAND ST PHASE 1 Navien

NR180A 9543K1210582035

9/26/2022

565 E CUMBERLAND ST PHASE 1 Navien

NR180A 9543J1210972028

12/23/2022

567 E CUMBERLAND ST PHASE 1 Navien NR180A 9543D1210932020

569 E CUMBERLAND ST PHASE 1 Navien NR180A 9534C1212824067

571 E CUMBERLAND ST PHASE 1 Navien NR180A 9543C1210522027

573 E CUMBERLAND ST PHASE 1 Navien NR180A 9543J1210572042 4/30/2021

575 E CUMBERLAND ST PHASE 1 Navien

NR180A

NPE 180S2

9543K1210982005

Replaced 3/7/2024

577 E CUMBERLAND ST PHASE 1 Navien

NR180A 9543E1161743081

Replaced 10/21/2020

Address Phase Apt Mfg. Model No. Serial No.

Flush Heat

Exchanger

Clean Intake

Air Filter

Clean

Intake

Water

Filter

Description of Services (✓)

Recommendation(s)

WATER HEATERS

Cumberland Gardens - Phase I Created November 2016 - Updated May 2026

Replace/

Repair Date:

Water Heater

579 E CUMBERLAND ST PHASE 1 Navien

NR180A

NPE 180S2

9543M1161192086

2084Z2462569H18 Replaced 11/20/2024

581 E CUMBERLAND ST PHASE 1 Navien

NR180A 9543J1122772052

10/15/2022

583 E CUMBERLAND ST PHASE 1 Navien

NR180A 9543M1210592074

Replaced 12/17/2022

585 E CUMBERLAND ST PHASE 1 Navien NR180A 9543J1210572072

587 E CUMBERLAND ST PHASE 1 Navien

NR180A

NPE 180S2

9543J1210572068

Replaced 4/3/2024

589 E CUMBERLAND ST PHASE 1 Navien NR180A 9543C1210522077

591 E CUMBERLAND ST PHASE 1 Navien

NR180A

NPE 180S2

9543E1210542071

Replaced 11/20/2023

593 E CUMBERLAND ST PHASE 1 Navien

NR180A

NPE 180S2

9543E1210542069

2080Y2492099593 Replaced 1/7/2021

3/7/2025

595 E CUMBERLAND ST PHASE 1 APT A Bradford White M4TW50T10FBN JF16781950

595 E CUMBERLAND ST PHASE 1 APT B Bradford White M4TW50T10FBN JF16781958

597 E CUMBERLAND ST PHASE 1 Navien NR180A 9543K1210582045

Address Phase Apt Mfg. Model No. Serial No.

Flush Heat

Exchanger

Clean

Intake Air

Filter

Clean Intake

Water Filter

1106 S ELLSWORTH ST PHASE 2 Navien

NPE 180A

NPE 180S2

7410R1411306052

2080N2492009580 Replaced 3/17/2025

1108 S ELLSWORTH ST PHASE 2 Navien NPE 180A 7410W1411356053

1110 S ELLSWORTH ST PHASE 2 Navien NPE 180A 7410Y1411376059 PUMP REPLACED 6/16/2023

1112 S ELLSWORTH ST PHASE 2 Navien NPE 180A 7410T1411326054

312 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410Y1420476509

314 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410Y1420476501

316 E CUMBERLAND ST PHASE 2 APT A Navien NPE 210A 7412U1452016367

316 E CUMBERLAND ST PHASE 2 APT B Navien NPE 180A 7410Y1462871171

316 E CUMBERLAND ST PHASE 2 APT C Navien NPE 180A 7410X1460361470

320 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410R1420406508

322 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410R1462801192

324 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410X14628611180

326 E CUMBERLAND ST PHASE 2 Navien

NPE 180A 7410X1420466440

Replaced 6/20/2023

328 E CUMBERLAND ST PHASE 2 APT A Navien NPE 180A 7410R1460301492

328 E CUMBERLAND ST PHASE 2 APT B Navien NPE 180A 7410X1462861160

332 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410W1420456503

334 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410W1420456513

336 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410S1420416515

Description of Services (✓)

Recommendation(s)

WATER HEATERS

Cumberland Gardens - Phase II Created November 2016 - Updated May 2026

Replace/

Repair Date:

Address Phase Apt Mfg. Model No. Serial No.

Flush Heat

Exchanger

Clean

Intake Air

Filter

Clean Intake

Water Filter

Description of Services (✓)

Recommendation(s)

WATER HEATERS

Cumberland Gardens - Phase II Created November 2016 - Updated May 2026

Replace/

Repair Date:

Water Heater

338 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410X1420466510

340 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410Y1420476089

342 E CUMBERLAND ST PHASE 2 Navien

NPE 180A 7410T1420426124

Replaced 6/9/2023

344 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410T1420426106

346 E CUMBERLAND ST PHASE 2 Navien

NPE 180A 7410R1420406122

9/22/2021

1105 S DAUPHIN ST PHASE 2 APT A Navien NPE 180A 7410X14204661090

1105 S DAUPHIN ST PHASE 2 APT B Navien NPE 180A 7410R1420406088

1107 S DAUPHIN ST PHASE 2 Navien NPE 180A 7410S1420416115

1109 S DAUPHIN ST PHASE 2 Navien

NPE 180A 7410X1420466120

7/16/2022

1111 S DAUPHIN ST PHASE 2 Navien NPE 180A 7410W1420456113

1112 S DAUPHIN ST PHASE 2 APT A Navien NPE 210A 7412V1452026070

1112 S DAUPHIN ST PHASE 2 APT B Navien NPE 180A 7410W1462851187

1112 S DAUPHIN ST PHASE 2 APT C Navien NPE 180A 7410S1462811195

1113 S DAUPHIN ST PHASE 2 Bradford White SDW2TW65T6FBN LJ35014141 (Solar)

1114 S DAUPHIN ST PHASE 2 APT A Navien

NPE 180A

NPE 180S2

7410T1462821186

2080Y2492099577 Replaced 2/19/2025

1114 S DAUPHIN ST PHASE 2 APT B Navien NPE 180A 7410T1462821194

1115 S DAUPHIN ST PHASE 2 Navien NPE 180A 7410T1420426436

1117 S DAUPHIN ST PHASE 2 Navien

NPE 180A 7410X1420466430

3/9/2026

Address Phase Apt Mfg. Model No. Serial No.

Flush Heat

Exchanger

Clean

Intake Air

Filter

Clean Intake

Water Filter

Description of Services (✓)

Recommendation(s)

WATER HEATERS

Cumberland Gardens - Phase II Created November 2016 - Updated May 2026

Replace/

Repair Date:

Water Heater

1119 S DAUPHIN ST PHASE 2 Navien NPE 180A 7410T1420426424

1121 S DAUPHIN ST PHASE 2 Navien NPE 180A 7410R1420406428 Replaced heat exchanger only

1123 S DAUPHIN ST PHASE 2 Navien NPE 180A 7410Y1420476431

1124 S DAUPHIN ST PHASE 2 Bradford White SDW2TW65T6FBN LJ34955646 (Solar)

1126 S DAUPHIN ST PHASE 2 Bradford White SDW2TW65T6FBN LJ34955645 (Solar)

1128 S DAUPHIN ST PHASE 2 Navien NPE 180A 7410X1420466500

1130 S DAUPHIN ST PHASE 2 Navien NPE 180A 7410T1420426096

1132 S DAUPHIN ST PHASE 2 Navien NPE 180A 7410W1420456083

1134 S DAUPHIN ST PHASE 2 Navien NPE 180A 7410S1420416085

412 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410R1420406118

414 E CUMBERLAND ST PHASE 2 APT A Navien NPE 180A 7410S1420416075

414 E CUMBERLAND ST PHASE 2 APT B Navien NPE 180A 7410T1420426076

416 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410W1420456423

418 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410W1420456433

420 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410S1420416215

422 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410R1420406422

424 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410Y1420476421

426 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410X1420466360

Address Phase Apt Mfg. Model No. Serial No.

Flush Heat

Exchanger

Clean

Intake Air

Filter

Clean Intake

Water Filter

Description of Services (✓)

Recommendation(s)

WATER HEATERS

Cumberland Gardens - Phase II Created November 2016 - Updated May 2026

Replace/

Repair Date:

Water Heater

428 E CUMBERLAND ST PHASE 2 Navien

NPE 180A

NPE 180S2

7410R1420406362

2080U2492059585 Replaced 1/30/2025

430 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410Y1420476361

432 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410R1420406358

434 E CUMBERLAND ST PHASE 2 Navien

NPE 180A

NPE 180S2

7410W1420456367

Replaced 7/25/2024

436 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410W1420456517

438 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410Y1420476469

440 E CUMBERLAND ST PHASE 2 Navien

NPE 180A

NPE 180S2

7410Y1420476511 Replaced 9/29/2023

442 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410W1420456497

444 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410W1420456507

446 E CUMBERLAND ST PHASE 2 Navien

NPE 180A

NPE180S2

7410R1420406518

Replaced

5/11/2021

12/12/2024

448 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410R1420406512

450 E CUMBERLAND ST PHASE 2 Navien NPE 180A 7410T1420426506

1103 S CARLISLE ST PHASE 2 APT A Navien NPE 180A 7410T1460321484

1103 S CARLISLE ST PHASE 2 APT B Navien

NPE 180A

NPE180S2

7410S1460311455

2080T22X2041132 8/11/2023

1111 S CARLISLE ST PHASE 2 APT A Navien

NPE 180A 7410T1462821036

Replaced 1/2/2026

1111 S CARLISLE ST PHASE 2 APT B Navien NPE 180A 7410X1462861030

Address Phase Apt Mfg. Model No. Serial No.

Flush Heat

Exchanger

Clean

Intake Air

Clean

Intake 1015 S CARLISLE ST PHASE 3 Navien NPE 180A 7410R1521601122 Replaced 10/15/2021

1017 S CARLISLE ST PHASE 3 Navien NPE 180A 7410T1521621116

1019 S CARLISLE ST PHASE 3 Navien NPE 180A 7410T1521621104

1021 S CARLISLE ST PHASE 3 Navien NPE 180A 7410S1521611115 Replaced 12/15/2021

1023 S CARLISLE ST PHASE 3 Navien NPE 180A 7410T1521621106 Repaired 6/27/2024

1025 S CARLISLE ST PHASE 3 Navien NPE 180A 7410R1521601112

1027 S CARLISLE ST PHASE 3 Navien NPE 180A 7410S1521611005

1029 S CARLISLE ST PHASE 3 Navien NPE 180A 7410T1521621086

309 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410S1541511075

311 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410T1530221316

313 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410W1530251363

315 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410R1530201362 Replaced 8/27/2024

317 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410R1530201352 Replaced 7/23/2024

319 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410Y1530271361 Replaced 2/3/2025

321 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410Y1530271349

323 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410Y1530271271

329 E CUMBERLAND ST PHASE 3 APT A Navien NPE 180A 7410Y1521671001

329 E CUMBERLAND ST PHASE 3 APT B Navien NPE 180A 7410X1460361450

333 E CUMBERLAND ST PHASE 3 APT A Navien NPE 180A 7410T1521621004 Replaced 3/27/2025

333 E CUMBERLAND ST PHASE 3 APT B Navien NPE 180A 7410W1521651003

337 E CUMBERLAND ST PHASE 3 APT A Navien NPE 210A 7412A1552671285

337 E CUMBERLAND ST PHASE 3 APT B Navien NPE 180A 7410W1411356117

337 E CUMBERLAND ST PHASE 3 APT C Navien NPE 180A 7410W1510551263 Replaced 7/16/2024

Description of Services (✓) Recommendation(s)

WATER HEATERS

Cumberland Gardens - Phase III

Created November 2016 - Updated May 2026

Replace/

Repair

Date:

Address Phase Apt Mfg. Model No. Serial No.

Flush Heat

Exchanger

Clean

Intake Air

Clean

Intake

Description of Services (✓) Recommendation(s)

WATER HEATERS

Cumberland Gardens - Phase III

Created November 2016 - Updated May 2026

Replace/

Repair

Date:

Water Heater

341 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410R1521601238

343 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410T1530221366

345 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410Y1521671221

347 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410R1530201342

353 E CUMBERLAND ST PHASE 3 APT A Navien NPE 180A 7410X1521661010 Replaced 1/3/2025

353 E CUMBERLAND ST PHASE 3 APT B Navien NR180A 7410T1521621006

357 E CUMBERLAND ST PHASE 3 APT A Navien

NPE 180A 7410X1521361110

1/13/2022

357 E CUMBERLAND ST PHASE 3 APT B Navien NPE 180A 7410W1521651007

401 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410S1521611235

403 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410Y1521671239

405 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410W1530951273

407 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410W1521651177

409 E CUMBERLAND ST PHASE 3 Bradford White SDW2TW65T6FBN LJ34955641 (Solar)

411 E CUMBERLAND ST PHASE 3 Bradford White SDW2TW65T6FBN LJ34955643 (Solar)

413 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410S1521611085 Replaced heat exchanger 2/20/2026

415 E CUMBERLAND ST PHASE 3 APT A Navien NPE 180A 7410S1541511085

415 E CUMBERLAND ST PHASE 3 APT B Navien NPE 180A 7410X1541561030

417 E CUMBERLAND ST PHASE 3 Bradford White SDW2TW65T6FBN LJ34955642 (Solar)

419 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410T1521621236

421 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410X1521661100

423 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410X1530961180

NO SERVICE REQUIRED

Address Phase Apt Mfg. Model No. Serial No.

Flush Heat

Exchanger

Clean

Intake Air

Clean

Intake

Description of Services (✓) Recommendation(s)

WATER HEATERS

Cumberland Gardens - Phase III

Created November 2016 - Updated May 2026

Replace/

Repair

Date:

Water Heater

425 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410S1521611095

427 E CUMBERLAND ST PHASE 3 Navien

NPE 180A 7410W1530951167

8/20/2022

429 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410W1530951173

431 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410R1521601232

433 E CUMBERLAND ST PHASE 3 Navien NR180A 7410Y1521671101 Replaced 12/24/2024

435 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410Y1521671099

437 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410R1521601102 EXCESSIVE CALCIUM 11/19/2022

439 E CUMBERLAND ST PHASE 3 Navien NR180A 7410W1521651087 Replaced 12/10/2024

441 E CUMBERLAND ST PHASE 3 Navien

NPE 180A 7410W1521651093

7/16/2022

443 E CUMBERLAND ST PHASE 3 Navien

NPE 180A 7410R1521601038

Replaced 3/8/2022

445 E CUMBERLAND ST PHASE 3 Navien NR180A 7410X1521661090 Replaced 11/14/2024

447 E CUMBERLAND ST PHASE 3 Navien NPE 180A 7410T1521621096