Kooken, Daniel
From: Kooken, Daniel
Seni: Tuesday, May 28, 2019 11:55 AM
To: Kooken, Daniel
Subject: Nimco #136
Sent from my iPhone
(@22)\ THE CITY OF NASHUA ‘The Cate City”
Financial Services
Purchasing Department
June 13, 2019
Memo #19-159
TO: MAYOR DONCHESS
FINANCE COMMITTEE
SUBJECT: CONTRACT FOR DOMESTIC HOT WATER AND HVAC SYSTEM UPGRADES
(VALUE: $209,000)
DEPARTMENT: 152 FIRE RESCUE; FUND: BOND; CAPITAL IMPROVEMENT; BUILDING TRUST FUND
Please see the attached communication from George A. Walker, Assistant Chief to the Finance
Committee dated June 7, 2019 for information related to this purchase.
Pursuant to § 5-78 Major purchases (greater than $10,000) A. All supplies and contractual services,
except as otherwise provided herein, when the estimated cost thereof shall exceed $10,000 shall be
purchased by formal, written contract from the lowest responsible bidder, after due notice inviting bids.
Nashua Fire Rescue and the Purchasing Department recommend the award of this contract to Palmer &
Sicard of Exeter, NH in the amount of $209,000.
Respectfully,
Dan Kooken
Purchasing Manager
Cc: G. Walker B. Rhodes J. Graziano
229 Main Street ¢ Nashua, New Hampshire 03061 e Phone (603) 589-3330 e Fax (603) 589-3233
Manchita Fir @ be 2S COL Ta Assistant Chief George Walker
Nasn Fire R ue Nashua Fire Rescue
Administrative Office (603) 594-3651
70 East Hollis Street, Nashua, NH 03060 Walkerg@nashuanh.gov
ww te
To: Finance Committee
From: Assistant Chief George Walker
Date: June 7, 2019
RE: 177 Lake St. HVAC/Domestic Hot Water System Upgrades
Nashua Fire and Rescue went out to bid on April 30, 2019 under IFB0292-052919 for Domestic
Hot Water and HVAC System Upgrades for Nashua Fire Station 2 at 177 Lake Street. Bids were
opened on May 29, 2019.
We had previously engaged Yeaton Associates to develop the mechanical systems and scope of
work documentation for the proposed HVAC renovation. We received the following bids:
Name of Vendor Bid amount
Palmer and Sicard Inc. Accepted bid $ 209, 000.00 ($ 194,000.00 substitute John
($209,000.00) Controllers).
RTH Mechanical Contractors INC. $177,493.00 (this bid was disqualified)
(disqualified)
Berkeley Building Co, $351,422.00
Alliance Mechanical $364,760.00
Based upon review of all bids, Palmer & Sicard was determined to be the successful bidder
based upon qualifying bid. They quoted 2 prices, one based on scope of work with specified
equipment, and the second with substitutions of Johnson Controllers.
Accordingly, we are requesting approval to contract with Palmer & Sicard in the amount of
$209,000.00 for the upgrade of Domestic Hot Water and HVAC System Upgrades for the Lake
Street Fire Station.
This work will be performed in the September timeframe.
Sincerely,
George A. Walker
Page | of |
? PALMER
Energy Services Division
Proposal
City of Nashua 603.589.3330 May 29, 2019
Central Purchasing Nashua Fire Rescue DEW and HIV AC Upgrades [FBO292.052919
229 Central Streer
Room 128
Nashua, NH 3061 resay fea fa pee
Palmer and Sicard is pleases to provide pricing for the Nashua Fire and Rescue Domestic Hot Water and 2VAC
Upgrades as described tn the enclosed Yeaton Associates “Proposed Mechanical” Scope and City of Nashua Invitation
to Bid.
Bid 1- Datkin
For the total sum of
$299,000.00 (two hundred nine thousand)
Alternate Bid - Same as Bid 1 with an approved Johanson Control equipment substitution
For the Sum of:
$194,000.00 (one hundred ninety four thousand)
‘Removal and proper disposal of exisung Am Handlers, condensers, boiler, and storage tanks
“Provide and Install Boiler, pvo storage tanks, nwo condensers, two air handlers as specified by Yeaton Assocnaics
“Furnish and install of new copper DHW piping, Bailer piping, flue piping balance valves, wolation ball valves as scheduled
“Furnish and install of new gas piping
“Furnish and install of new fittings and valves as necessary for all piping
“Insulation duct, HWS and HWR piping
Provide Sub-Contractors for:
Rigging, Electrical, Controls, Balancing, and General Comiractor (for drywall repairs, painting, concrete and perimeter ait icaks)
Close Out
Drawing as-builts
“Customer Training
Additional specifications and provisioas:
Notes: All work to be performed during normal business hours. Scope of work ts ax described above. Any and all abatement
deemed necessary ts not included in this proposal. Unfoceseen circumstances mav result in change of price and,‘or scope
Required Insurance and Bonds to be provided if awarded project.
Thank you for the opportunity,
Terry Proctor
tproctor@ palmerandsicard.com
Cell: 603-231-2572
Energy Services Division
140 Epping Road
Exeter, New Hampshire 03833
Office: (603) 929-0910
Fax: (603) 929-0973
Scope of Work
Domestic Het Water System
&
oe
Replacement of the entire domestic hot water system. The current age of the systerm, tts efficiency and
difficulty in obtaining replacement parts are factors in seeking replacement
Provide mechanical labor. equipment, msulation, piping and electrical for a complete replacement working
system
Provide and install a high efficiency condensing boiler, cantrols and new boiler purnp all with an 8+ year
warranty.
Provide and install two (2) 120 gallon glass lined storage tanks, mixing valves and expansion tank.
Provide startup and training on the new system
Removal of old system
HVAC System
The current HVAC System is nearing the end of life and the coils are not producing the tonnage they were
designed for.
The existing air handlers HVAC-i and HVAC-2 shall be broken down and completely refurbished including
replacement of the fan motor with new premium high efficiency motor. all fan belts and pulleys, filters and
filter racks, heating coils, DX coils. fan shafts, fan housings and all spring isolaters. The interior of boih air
handlers shail be cleaned and the airflow rebalanced to meet the airflows specified on the as-built
documents. Refurbishment shall include manufacturer inspection and start up
The existing exterior condensing units ACCU-1 and ACCU-2, their associate4d DX coils and piping shali be
replaced with new units ulilizing R-41-A as the refrigerant. ACCU-1 and ACCU-2 shail be replaced with a
new condensing unit and provided with a new disconnect, power and controls. Both new ACCU's shall be
208 Volt, 3 Phase, 60 Hz A new DX coil is to be provided in each unit. All piping is to be insulated as per
specifications.
Provide and install new piping and new insulation and electrical as needed.
Provide and install new controls, sheet metal and balancing of the system
Provide startup and training of the new system
Removal of all old equipment.
1F80292-052919 Nashua Fire Rescue Domestic Hot Water and HVAC System Upgrades
229 Main Street » Nashua, New Hampshire 03061 » Phone (603) 589-3330 © Fax (603) 589.3233
\4 yy w YEATON ASSOCIATES, INC.
Project Name: Lake Street Fire Station - HVAC Upgrades
Project Location: | Nashua, NH
Document Date: April 19, 2019
YA Project #: 19005ME
Executive Summary
Yeaton Associates, Inc, was engaged by the City of Nashua to develop the mechanical systems for
the proposed HVAC renovation at the Lake Street Fire Station in Nashua, NH. The two existing air
handler units located in the basement along with their associated condensing units are reaching
end of life and require replacement. The existing domestic water plant is also nearing end of life
and shall be replaced. Lastly the existing DDC BMS system shall be upgraded to meet current
requirements. The goal is to install a cost-effective MEP/FP system while meeting or exceeding the
code and operational requirements of the project.
This narrative presents the mechanical systems for the Lake Street Fire Station.
All new construction elements and systems will conform to the following:
® The New Hampshire State Building Code
* NH State Fire Code
@ IBC 2009 (International Building Code)
e JECC 2009 (International Energy Conservation Code)
® IMC 2009 (International Mechanical Code)
e IPC 2009 (international Plumbing Code)
® NEC 2017 (National Electrical Code)
® NFPA Standards (Current Editions)
e ASHRAE Standards (Current Editions)
e Local Authorities Having Jurisdiction (AHJ)
e All Other Applicable Codes and Standards
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66 Jackson St, Littleton, NH 03561 | 40 So. River Rd #35, Bedford. NH 03110 | Ph. 693.444.6578 | www.yeatonassociates com
VA
Existing Conditions
*
* Heating, Cooling, and Ventilation Systems
The areas of the building excluding the apparatus bay are served by air handling units HVAC-1 and
HVAC-2. HVAC-1 has a capacity of 5,545 CFM with a hydronic heating coil rated for 162 MBH at 8.1
GPM flow rate with a AT of 40°F and a DX coil rated for 154.5 MBH Total Cooling Capacity and 94.4
MBH Sensible Cooling Capacity served by the exterior condensing unit CU-1. HVAC-2 has a capacity
of 4,805 CFM with a hydronic heating coil rated for 333.5 MBH at 16.6 GPM flow rate with a AT of
40°F and a DX coil rated for 125.9 MBH Total Cooling Capacity and 113.2 MBH Sensible Cooling
Capacity served by the exterior condensing unit CU-2. Both units are 208 Volt, 3 Phase, and 60 Hz.
The existing condensing units CU-1 and CU-2 are located on grade at the rear of the building. Both
units are 208V, 3 Phase, 60 Hz. The piping is run within a PVC pipe down below prade and extends
into the mechanical room to connect to the DX coil in the air handling units.
The system is reaching end of life and while functional its cooling capacity has been declining and is
currently not sufficient for cooling the building.
* Automatic Temperature Controi (ATC) System
The existing ATC system is a 1998 vintage jCl Metasys controi system and is currently functional.
The existing system utilizes MCM controllers which are no longer supported and the user interface
and control points are not able to be revised or upgraded. The existing front-end coniroller will
require replacement but the existing field controllers should be reusable with an upgraded front
end.
* Domestic Hot Water Plant
The existing domestic hot water plant currently consists of a Lochinvar CFNOSOOPM gas fired
instantaneous water heater (500 MBH input, 515 GPH at 100°F rise} serving four 119-gallon hot
water storage tanks of which only two are currently operational. The system at its current age is
reaching its end of life and sourcing parts are becoming difficult.
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66 Jackson St, Littleton, NH 03561 | 40 So. River Rd #35, Bedford, NH 03110 ; Ph: 603.444 6578 | www yeatonasseciates com
Proposed Mechanical
« General
The bidding contractor shall put in writing and issue with the bid proposal any assumptions or
exemptions above and beyond those outlined in the RFP pertaining to the project.
As this is a design build project the information provided in this narrative and attached
specifications are supplied to aide the contractors in bidding the project and is not the only way the
project can be completed. The contractor is allowed to propose alternate equipment or
configurations in their proposal but must provide a description if what is priced differs from the
possible solution outlined in the narrative to allow for review before acceptance of submitted bids.
% Heating, Cooling, and Ventilation Systems
The existing air handlers HVAC-1 and HVAC-2 shall be broken down and completely refurbished
including replacement of the fan motor with new premium high efficiency motor, all fan belts and
pulleys, filters and filter racks, heating coils, DX coils, fan shafts, fan housings and all spring
isolators. The interior of both air handlers shall be cleaned and the airflow rebalanced to meet the
airflows specified on the as-built documents. Refurbishment shall include manufacturer inspection
and start up.
The existing exterior condensing units (ACCU-1 & ACCU-2), their associated DX coils (see attached
selections from manufacturer), and piping shall be replaced with new units utilizing R-410A as the
refrigerant. ACCU-1 shall be replaced with a new condensing unit and provided with a new
disconnect, power and controls {refer to Daikin Applied equipment selections). ACCU-2 shall be
replaced with a new condensing unit and provided with a new disconnect, power and controls
(refer to Daikin Applied equipment selections). Both new ACCU’s shall be 208 Volt, 3 Phase, 60 Hz,
refer to attached selections from manufacturer. A new DX coil is to be provided in each unit. All
piping is to be insulated as per specifications.
The contact information for the Daikin Applied representative at HTS who is familiar in the project
is as follows:
Derek Anneser
(603)702-3432
derek.anneser@hts.com
No piping shall be reused as the current piping and joints are not compatible with the new
refrigerant. The new piping shall be brazed and in order to install the piping in the existing
horizontal PVC conduit will require excavation and replacement of the joint with a long sweep
elbow. In case there is a deficiency found in the PVC conduit provide a unit price per linear foot for
running the refrigerant line along the exterior wall and above the ceiling down to the new DX coil.
The size and configuration of the piping system shall be as per recommendation of equipment
manufacturer. Piping shall be manufacturer provided insulated linesets.
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66 Jackson St, Littleton, NH 03564 | 40 So. River Rd #35, Bedford, NH 03110 | Ph: 603.444.6578 | www.yeatonassociates.com
Contractor shall provide and install 4” diameter fiue and combustion air venting for the domestic
water heater to terminate at the exterior of the building. Venting shall be installed as per
manufacturer provided guidelines and material shall be as per manufacturer. Routing of vents shall
be coordinated with and approved by the owner but it is assumed they could be run up in the flue
chase adjacent to the break room above the mechanical room and then terminated at the sidewall.
Contractor shall provide startup services and training on site for the new system.
Refer to attached specifications for equipment and materials information.
*% Automatic Temperature Contrei (ATC) Sysiem
The existing JCI Metasys MCM controller (Panel C6) shall be removed and the field controllers are
expected to remain in place for reuse. A new controller similar to JCI Facility Explorer or Distech
Controls and is to be compatible with the existing controls shall be provided and installed as a new
front end and reconnected to the existing field controllers.
The contractor is responsible to provide a new user interface integrating all the existing controls as
well as the new point/controller for the proposed replacement domestic hot water plant. Provide a
unit price for new field controllers in case an existing controller is found to be deficient. The
contractor shall submit for review and approval control shop drawings indicating all points, wiring,
and sequences to be utilized in the final ATC system.
Contractor shall provide startup services and training on site for the new system.
The contact for representative at Control Technologies Incorporated that is familiar with the
project is as follows:
Chris Clorite
(603)626-6070
celorite@controltechine.com
& Domestic Hot Water Plant
The existing domestic water heater, storage tanks, thermostatic mixing valve, recirculation pump,
expansion tank, thermometers, valves shall be removed in their entirety for replacement with a
new domestic hot water plant. The existing domestic water system shall be removed from the
check valve on the cold-water feed for the water heaters to the hot water discharge side of the
thermostatic mixing valve. The new system shall be reconnected to the existing domestic water
distribution system at the points noted above.
A new 600 MBH gas fired condensing instantaneous domestic water heater (Similar to the Aerco
Inn 600) with 696 GPH output at 100°F rise shall be installed serving two new 119-gallon hot water
storage tanks. The tanks shall be piped in a reverse return fashion and a circulation pump (12 GPM
@ 20’ TDH) shall be provided for maintaining temperature in the storage tanks. The water heater
shall be suitable for use at a minimum gas pressure of 4” WC as only 4.5” WC is guaranteed after
meter.
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66 Jackson St, Littleton, NH 03561 | 40 So. River Rd #35, Bedford, NH 03110 1 Ph: 603.444.6578 | www.yeatonassociates.com
