Download Report

ADDENDUM NO. 4
PURCHASING DEPARTMENT  3630 STATE STREET  SALEM, OREGON 97301-5399  (503) 3993086
BID 2015-561
INVITATION TO BID COMPUTER LAB A/C INSTALLATION PKG #1
Addendum Dated: April 7, 2015
Page 1 of 1 Page(s)
Bid Closing Date: Thursday, April 9, 2015
THE ABOVE BID IS HEREBY CHANGED AS INDICATED BELOW:
CHANGE:
The bid closing date is hereby extended to Tuesday, April 14, 2015, at 2:00 p.m.
Pacific time.
CLARIFICATION:
The question was raised that model numbers in the scope of work did not match
model numbers on the price sheet. A revised scope of work is attached.
END OF ADDENDUM 4
School District 24J complies with provisions of the various civil rights laws, such as the Fair Employment Practices Act,
Title IX Regulations, and section 504 of PL 93.112 in employment and educational programs and activities.
It is the intent of Salem Keizer School District (SKSD) to enter into a contractual agreement with a
single or multiple HVAC contractor(s) to install cooling systems for several schools. The general
scope of the work would be to install ductless or ducted split system cooling / heat pumps systems in
up to 55 classrooms. The installations would be released for construction in packages of no more
than 11 systems per installation package. These systems would be at multiple sites. The goal is to
have all the systems installed before the end of summer 2015.
The equipment will be manufactured by Daikin supplied by Oregon Air Reps in Lake Oswego
Oregon. SKSD has secured pricing for the system types that may be installed. SKSD intends to have
the Contractor purchase the equipment using the negotiated price agreement. SKSD is asking for
pricing to complete the first grouping of these installations.
Computer Lab HVAC General Installation Requirements
Includes all labor, materials, equipment and supplies required for a full functioning HVAC system
including:
1. Installation of outside unit and indoor unites) - Include a complete price including labor,
equipment and materials needed to install the indoor and outdoor units. Do not include price
for equipment as that price will be assigned based on the price agreement. Equipment to be
delivered to the location of contractor's choice. Units to be shipped FOB Factory FFA to a
location in Salem Oregon. The exact location (contractor's office or site) is to be determined
by the contractor. Supporting hardware such as line sets, brackets, cages, pads, etc. may be
purchased through the agreement, but should be procured through the most economical
means if other options provide a lower cost. All Daikin units shall be purchased through the
agreement. Please see attached specification for Supporting Hardware.
2. Mounting of outdoor units:
a. Factory wall brackets for wall mounted units are included in the agreed equipment
price. Include only the labor for installation and any needed fasteners. The attachment
means for the bracket to the wall shall be submitted and approved by the district prior
to any work commencing.
b. Where outdoor units are located at grade they are to be locate on a concrete pad and
inside security cages. Concrete pad is a mobile standard low density polymer
concrete pad. Demolition of landscape where required is the responsibility of the
contractor. Irrigation modifications will not be necessary.
c. For roof mounted equipment (where slopes are less than 3:12) include the cost for a
curb, cap and flashing. See attached detail # 1.
3. Penetrations through Structure:
a. See detail for roof penetrations, detail #2. Many of the roofs are warranted by the
installing contractor. Any revision to the roof must be completed by this approved
contractor. SKSD will provide the firm (or choice of firms) to be used. Contractor is
to include an allowance for roof work in pricing. That allowance is $500.00 and is
Subject to revision based on actual invoiced costs.
b. Seal all exterior penetrations, provide sealant with low VOC listing and less than
25/50 flame spread / smoke propagation characteristics.
4. Exact indoor and outdoor configuration and location shall be determined by SKSD during
site review with contractor.
5. Electrical:
a. Power to unit(s) including conduit, wire, disconnects, breakers, surface raceway,
and terminations. See specifications included for electrical device means and
materials.
b. Wire to outside units to be min. 10ga. Power connection from source of power to
outdoor unit to be bid based on 50' conduit length. All outdoor wiring to be run in
liquid tight conduit with associated connectors. See additional items for longer
distance costs.
c. Wiring to indoor units to be min. 12ga. Power connection from source of power to
outdoor unit or indoor source of power (depending on system type) to be bid
based on 50' conduit length. See additional items for longer distance costs.
d. All wiring to be in EMT conduit, liquid tight conduit or approved surface raceway
where easily accessible. For concealed locations MC cable is allowed.
e. Where wiring cannot be concealed it is preferred to run on wall inside building
rather than outside.
f. Power and control wiring may enter the interior units from the bottom, side or
back only.
g. Provide and label breaker feeding new equipment. Label units as to circuit
feeding them. Exterior label shall be appropriate for application.
h. Conduit and wire shall be concealed in rooms and locations where possible.
Install conductors and conduits (MC Cable) in framed walls where lines can be
fished. Install concealed above accessible ceilings or in attic spaces.
6. Controls:
a. If hardwired thermostat option is chosen, provide control wiring and specified
wire-way between units and the wall mounted thermostat. For bidding purposes
the distance between the unit and the thermostat is less than 50'. If the hardwired
thermostat option is not chosen, only the wireless remote will be provided as part
of this work.
b. Control wiring to be 18ga. min.
c. If the units are to be integrated into the building DDC system the Contractor will
use the District's approved controls contractor. A price agreement has been
established. The cost for the responsibility of the control work will be included in
the Contractors Contract.
7. Piping / Plumbing:
a. Installation of line set. Include cost for line set installation. For bidding purposes
the distance between the outdoor unit and indoor unite s) is 35' . b. Line sets shall be sized for the application and shall be pre-insulated copper
tubing
c. Condensate from indoor unites) to be routed to exterior landscape area in 1" PVC
(Sch 40), PEX, or type M or thicker copper. Copper shall be used where exposed.
d. Condensate drainage shall be via gravity where possible. Where pumps are
required these shall be provided per the unit cost in the proposal. Pumps may be
purchased through the SKSD Price Agreement, but should be procured through
the most economical means if construction of the pump matches that of the Price
Agreement unit. Installation of condensate pumps is requested as an added item
for only those locations where it is necessary. Assume condensate piping does not
exceed 35'.
e. Protection of exterior refrigerant lines is to be provided. Provide galvanized sheet
metal covers, Rector Seal "Slim Duct" in color similar to building exterior, or
Aluminum pipe shield material (per ASTM C1729).
f. Where it cannot be concealed the piping is preferred to run on wall inside building
rather than outside.
8. Cleanup of all debris and restoration of damaged surfaces.
a. Contractor shall protect all adjacent surfaces and shall return the work site to the
same or better condition as existed before beginning the work. Any damaged
surfaces shall be restored by means and with products agreed to by the District.
9. Submit for and purchase all permits required. Include time to be on site for reviews / site
inspections. Provide final inspection report to show all permits are closed and approved.
10. Ducted unites) to include adapters to round SA / RA mains. Mains to be sized at less than
1000 FPM air velocity. Duct to be 26 ga minimum and constructed per SMACNA
standards for 1" positive / negative pressure. Branch ducts to be sized at less than 800
FPM velocity. Ducts may be flexible round (Flexmaster or approved). Diffusers to be
sized at NC value of 20 to 25 for cooling only units and 25 to 30 for heat pump units. RA
grilles to be sized for less than 500 FPM face velocity. Grilles and diffusers to be Price
SMDA directional diffuser with PDR perforated face return grilles or equal Titus or
Nailor. Ductwork to be insulated for installations in unconditioned spaces. Provide one
diffuser per rated ton capacity of the indoor fan unit. Assume 25' for main SA / RA duct
and 10' per diffuser branch duct. Ductwork to be installed above T-bar ceiling or in attic
space. For installation with exposed ductwork revisions to pricing will be reviewed on a
case-by-case basis. Provide all supports and attachments required by code and SMACNA
standards.
11. Controls Scope: The work will be bid directly by the district's control contractor of choice
(Environmental Controls Corporation (ECC) - Lake Oswego Oregon) or (ESC Automation
(ESC) - Durham Oregon). The contractor is responsible for coordination of scheduling ECC
or ESC to complete the installation. Direction to ECC or ESC to visit the site to complete
their work prior to the systems being ready will result in the costs for the wasted trip being
billed against the contractor's installation costs.
ELECTRICAL SPECIFICATION
1. GENERAL
a. All work and materials shall conform to all applicable local and state codes.
b. All work and materials shall confirm to NEC.
c. All electrical products installed in this project shall be listed by Underwriters
Laboratories, Inc., or be approved in writing by the local inspection authority as
required by governing codes and ordinances.
d. Provide raceways and conduits for all electrical system wiring (low voltage and
line voltage). Exposed locations in finished areas (where concealing of conduits
is not possible) use surface raceway.
e. Under no conditions are beams, girders, footings or columns to be cut for
electrical items.
f. Provide complete electrical connections for all items of equipment requiring such
connections, including incidental wiring, materials, devices and labor necessary
for a finished working installation.
2. CONDUITS
a. Conduit type required by areas of use:
i. Dry concealed locations: GRC, IMC, EMT
ii. Wet Locations: GRC, IMC
b. Flexible metal conducts are allowed but limited to final connection of equipment
(not more than 48”). Flexible metal conduit will be permitted only where
flexibility is necessary. Flexible metal conduit shall be used for connection to all
equipment subject to movement or vibration. Liquid-tight flexible metal conduit
shall be used when moisture may be present and for exposed motor and
equipment connections.
c. Metal-clad cable may be used for all concealed branch circuit wiring where
permitted by local codes and NEC Article 330 except where otherwise noted.
Metal-clad cable shall be used only for concealed interior wiring and shall be
exposed only in unfinished crawl spaces or attics. Cable shall be steel jacketed,
interlock armor with internal, fully insulated, green grounding conductor and
multi-conductor, thermoplastic, insulated, color-coded solid or stranded copper
conductors No. 12 through No. 6 AWG, 600 volt.
d. Galvanized Rigid Conduit (GRC) shall be hot-dip zinc, galvanized inside and out,
mild steel pipe manufactured in accordance with UL-6 and ANSI C80.1. All
threads shall be galvanized after cutting. GRC shall be coupled and terminated
with threaded fittings. Ends shall be bushed with insulating bushings equal to
T&B 1220 or 1230 series.
e. Electrical Metallic Tubing (EMT) shall be steel only and shall comply with UL797 and ANSI C80.3. Exterior shall be hot-dip zinc galvanized and interior
protected by a corrosion-resistant lubricating coating. Connectors and couplings
for EMT shall be steel concrete tight compression type or set screw type with
insulated throats on connectors. Indent type connectors shall not be used.
f. Intermediate Metallic Conduit (IMC) shall comply with UL-1242 and ANSI
C80.6. Exterior shall be hot-dip zinc galvanized and interior protected by a
corrosion-resistant lubricating coating. IMC shall be coupled and terminated
with threaded fittings. Ends shall be bushed with insulating bushings equal to
T&B 1220 or 1230 series.
g. Flexible metal conduit shall be steel and comply with UL 1 and ANSI standards.
Liquid-tight flexible metal conduit shall comply with UL 360 and ANSI
standards.
3. CONDUCTORS
a. Conductors No. 10 AWG and smaller may be soft-drawn, stranded, or solid
copper. Conductors larger than No. 10 AWG shall be stranded, soft-drawn
copper.
b. Insulation for new conductors installed in raceways shall be "THWN" for
conductors No. 8 AWG or smaller, and "THWN" or "THHN" for conductors No.
6 AWG or larger, or as noted.
c. All insulation shall be rated 600 volts unless noted otherwise.
4. SPLICES AND TERMINATIONS
a. All connectors shall be solderless pressure type per Fed. Spec. W-S-610, properly
taped. All taped joints shall be with plastic tape, "Scotch 33," applied in half-lap
layers without stretching to deform.
b. Splices shall utilize Scotch "Hyflex" or "Ideal" wing nut connector installed
properly. Splices for No. 8 and larger wires shall be made with tin or silver plated
copper compression sleeves.
5. DEVICES
a. Receptacles: Single and duplex receptacles shall be rated 20 amperes, 125 volts,
two-pole, three-wire, grounded type, Hubbell HBL5362 Series. Receptacles shall
have nylon faces, one-piece brass mounting strap with integral ground contacts
and bypass power contacts.
b. Receptacles with ground fault interrupters shall be in accordance with UL 943.
c. Receptacles in wet locations shall be in a weatherproof enclosure, the integrity of
which is not affected when the receptacle is in use. The enclosure shall be of highimpact polycarbonate construction, with a keyhole hinge without a spring and
other metal parts, with a gasketless translucent lid that is lockable and tinted and
has large cord openings. The enclosure shall be one or two-gang, and shall be
securely secured to the receptacle box with tamper-proof fasteners through
factory-drilled or field-drilled through factory-prepared drill points.
6. DISCONNECTS
a. Enclosed safety switches shall be horsepower rated in conformance with Table III
or Fed. Spec. W-S-865. Switches shall disconnect all ungrounded conductors.
b. Safety and disconnect switches shall be equipped with a defeatable cover
interlock. Operating handles shall be located to side of switches.
c. Enclosures shall be NEMA 1 for indoor use, NEMA 3R where installed exposed
to the weather.
d. Disconnects shall be fusible or non-fusible as required by equipment manufacture.
Equip all fusible disconnects with dual element fuses required by the equipment
served. Coordinate fuse sizes at the time equipment is connected. Adjust fuse
sizes if necessary to accommodate actual equipment installed. In no case shall
fuses be sized smaller than the starter heaters on motor circuits.
7. INSTALLATION
a. Conceal all wiring in finished spaces so far as practicable. Exposed conduit shall
be used only in unfinished spaces.
b. Exposed raceways shall be parallel or at right angles to structural lines, and shall
be neatly offset into boxes. Exposed raceways shall follow existing exposed
piping/ductwork/conduit paths as far as practicable.
c. Install intumescent material around conduits to prevent spread of smoke or fire
where installed in sleeves or block-outs penetrating fire-rated barriers. An
alternate method utilizing intumescent materials in caulk and/or putty form may
be used.
d. MC Cable Installation:
i. Support horizontal and vertical cable 6 feet on center (maximum) and
within 6" of boxes with approved cable clamps.
ii. Support cable above accessible ceilings; do not rest cables on ceiling tiles.
Attach cables with metal clips or plastic cable ties to support wires from
structure on 6-foot centers maximum.
iii. Cable shall be cut with manufacturer-approved devices.
iv. Splice conductors only in accessible junction boxes.
v. Cable shall not be supported from or come into contact with mechanical
ducts, water, sprinkler or gas piping; maintain 6-inch separation minimum.
vi. Provide junction box at all cable penetrations of wall, ceiling, or floor
surfaces for equipment connections; cable shall not be run directly through
finished surfaces.
vii. Provide junction box at transition from concealed to exposed wiring.
Exposed wiring shall conform to Section 16110 - Raceways.
viii. Where cable penetrates fire-rated walls or floors, provide mechanical fire
stop fitting with UL-listed fire rating equal to wall or floor rating.
ix. Provide junction box at transition from interior to exterior wiring.
Workmanship is to be judged against industry standards for excellent workmanship. Corrections
necessary to bring the installation into compliance with that grade of installation shall be completed
at no cost to the owner. Any damage done as a result of inferior installations shall be corrected at no
cost to the owner.
Warranty: The contractor shall warranty all aspects of their installation for a period not less than one
year. The period shall not start until the school district or their assigned consultant declare the
installation operational and per requirements.
Any revisions to the data above found to be necessary due to these questions will be issued to all
parties invited in the RFP.
Site Specific Scope:
Hoover Elementary
Inside Unit:
Unit: FTXS36LVJU
Location: West wall near center line, 9’ above finished floor
Utility Routing: Along West wall to the South
Controls: Local control through provided wireless remote
Outdoor Unit:
Unit: RKS36LVJU
Location: Flat roof section immediately SW of room. Locate as far from roof edge as
practical.
Utility Routing: Through roof, then through wall of classroom directly to unit
Power: From panel A1 located behind door to classroom, circuit locations 38/40
Washington Elementary
Inside Unit:
Unit: FBQ36PVJU
Location: In attic space above classroom unless unit can be concealed within ceiling.
Utility Routing: Direct within attic
Controls: BRC1E72 Wall Thermostat
Outdoor Unit:
Unit: RZR36PVJU9
Location: Attic, blowing from South to North, split distance between room and electrical.
Utility Routing: Direct within attic
Power: From panel A located South of the space in the hall, circuit locations 28/30
Auburn Elementary
Inside Unit:
Unit: FCQ24PAVJU
Location: Ceiling, near center of class room in grid.
Utility Routing: Direct within ceiling/attic, condensate out through South wall.
Controls: BRC1E72 Wall Thermostat
Outdoor Unit:
Unit: RZR24PVJU9
Location: On roof above class room. Adjust to minimize additional refrigerant/electrical
cost.
Utility Routing: Direct within attic
Power: From panel L located 5’ South of the Library entrance in the hall, circuit locations
28/30
Four Corners Elementary (two locations)
Media Area:
Inside Units:
Units: FXAQ18PVJU (2 ea.)
Location: Wall between Computer lab and Library, at ceiling near South wall, back to back.
Utility Routing: Out South wall.
Controls: 2 each, BRC1E72 Wall Thermostat
Outdoor Unit:
Unit: RXYMQ36PVJU
Location: On roof above Library/Computer Lab as far from roof edge as practical.
Utility Routing: Through roof, then through wall. Electrical through roof, then ceiling space
Power: Panel B in main hall half way between Media area and Classroom 12, North wall of
hall immediately East of fire doors.
Classroom 12 (Computer Lab)
Inside Unit:
Unit: FBQ36PVJU
Location: On West wall near ceiling.
Utility Routing: Direct within attic or along wall
Controls: BRC1E72 Wall Thermostat
Outdoor Unit:
Unit: RZR36PVJU9
Location: Flat roof section immediately outside classroom.
Utility Routing: Direct within attic
Power: Panel B in main hall half way between Media area and Classroom 12, North wall of
hall immediately East of fire doors.