HomeMy WebLinkAbout34E. Joint Sealers and Sealants: Non -hardening, water resistant, mildew and mold
resistant.
1. Type: Heavy mastic or liquid used alone or with tape, suitable for joint
configuration and compatible with substrates, and recommended by manufacturer
for pressure class of ducts.
2. VOC Content: Not more than 250 g/L, excluding water.
3. Surface Burning Characteristics: Flame spread of zero, smoke developed of
zero, when tested in accordance with ASTM E 84.
4. For Use With Flexible Ducts: UL labeled.
5. Ductwork Exposed to the Weather: Hard cast VersaGrip 102, (VG -102), UL
181 -AM compliant duct joint sealer, as manufactured by Carlisle, with
fiberglass scrim tape reinforcement on all seams and joints, lateral and
longitudinal.
F. Hanger Rod: ASTM A 36/A 36M; steel; threaded both ends, threaded one end, or
continuously threaded.
2.02 DUCTWORK FABRICATION
A. Fabricate, support and seal in accordance with SMACNA HVAC Duct Construction
Standards - Metal and Flexible, and as indicated. Provide duct material, gages,
reinforcing, and sealing for operating pressures indicated.
B. Construct T's, bends, and elbows with radius of not less than 1-1/2 times width of
duct on centerline. Where not possible and where rectangular elbows must be used,
provide turning vanes. Where acoustical lining is indicated, provide turning vanes
of perforated metal with glass fiber insulation.
C. Increase duct sizes gradually, not exceeding 15 degrees divergence wherever
possible; maximum 30 degrees divergence upstream of equipment and 45 degrees
convergence downstream.
D. Fabricate continuously welded round and oval duct fittings two gages heavier than
duct gages indicated in SMACNA Standard. Joints shall be minimum 4 inch cemented
slip joint, brazed or electric welded. Prime coat welded joints.
E. Provide standard 45 degree lateral wye takeoffs unless otherwise indicated where 90
degree conical tee connections may be used.
F. Where ducts are connected to exterior wall louvers and duct outlet is smaller than
louver frame, provide blank -out panels sealing louver area around duct. Use same
material as duct, painted black on exterior side; seal to louver frame and duct.
2.03 DUCT MANUFACTURERS
A. Metal -Fab, Inc.; SEMCO Incorporated; United McGill Corporation.
2.04 MANUFACTURED METAL DUCTWORK AND FITTINGS
A. Manufacture in accordance with SMACNA HVAC Duct Construction Standards - Metal and
Flexible, and as indicated. Provide duct material, gages, reinforcing, and sealing
for operating pressures indicated.
B. Round Spiral Ducts: Machine made from round spiral lockseam duct with light
reinforcing corrugations; fittings manufactured of at least two gages heavier metal
than duct.
C. Double Wall Insulated Round Ducts: Round spiral lockseam duct with galvanized
steel outer wall, 1 inch thick fiberglass insulation, perforated galvanized steel
inner wall; fitting with solid inner wall.
D. Transverse Duct Connection System: SMACNA "E" rated rigidly class connection,
interlocking angle and duct edge connection system with sealant, gasket, cleats,
and comer clips.
PART 3 EXECUTION
3.01 EXAMINATION
A. Examine drawings for the Architectural, Structural, Electrical and all other trades
prior to preparation of ductwork shop drawings and prior to the fabrication of any
ductwork.
B. Resolve any conflicts encountered with the Engineer prior to fabrication.
C. Identify on ductwork shop drawings any deviations in sizes or shapes made necessary
by the obstructions of other trades.
3.02 INSTALLATION
A. Install in accordance with manufacturer's instructions.
B. Duct sizes indicated are inside clear dimensions. For lined ducts, maintain sizes
inside lining.
C. Install and seal metal and flexible ducts in accordance with SMACNA HVAC Duct
Construction Standards - Metal and Flexible.
D. Provide openings in ductwork where required to accommodate thermometers and
controllers. Provide pilot tube openings where required for testing of systems,
complete with metal can with spring device or screw to ensure against air leakage.
Where openings are provided in insulated ductwork, install insulation material
inside a metal ring.
E. Locate ducts with sufficient space around equipment to allow normal operating and
maintenance activities.
F. Use crimp joints with or without bead for joining round duct sizes 8 inch and
smaller with crimp in direction of air flow.
G. Use double nuts and lock washers on threaded rod supports.
H. Connect flexible ducts to metal ducts with draw bands.
I. Support flexible duct runs every five feet in the horizontal direction to avoid
dips and sags.
J. Connect terminal units to supply ducts with one foot maximum length of flexible
duct. Do not use flexible duct to change direction.
K. Connect diffusers to low pressure ducts directly or with 5 feet maximum length of
flexible duct held in place with strap or clamp. Longer duct lengths are
acceptable if depicted on the design drawings and allowed per local code. A
maximum of one 90 degree bend, or equivalent, will be allowed in flexible duct
runs.
L. During construction provide temporary closures of metal or taped polyethylene on
open ductwork to prevent construction dust from entering ductwork system.
M. All exposed ducts in finished areas must be completely free from all dents or
imperfections in the galvanized coating and shall be sealed CAREFULLY AND NEATLY
with duct sealer completely contained within the joint. Duct wrap will not be
permitted in exposed locations.
N. All roofing penetrations shall be flashed and weather sealed by the roofing
manufacturer's authorized roofing contractor at this Contractor's expense. This
Contractor shall contract with the factory authorized roofing contractor for the
specific roofing system applicable to this Project. The use of an unauthorized
roofing contractor may result in removal and replacement of the penetration systems
at this Contractor's expense.
3.03 CLEANING
A. Clean duct system and force air at high velocity through duct to remove accumulated
dust or clean with high power vacuum machines. To obtain sufficient air, clean
half the system at a time. Protect equipment which may be harmed by excessive dirt
with temporary filters, or bypass during cleaning.
3.04 SCHEDULES
A. Ductwork Material:
B. The Contractor may use any of the following ductwork materials, at his option,
provided the selected material meets with the approval of all State, local
authorities and utility company requirements. Verification of compliance of the
selected piping material is the sole responsibility of the installing Contractor.
1. Low Velocity Supply (Heating Systems): Galvanized Steel, Aluminum.
2. Low Velocity Supply (System with Cooling Coils): Galvanized Steel, Aluminum.
3. Return and Relief: Galvanized Steel, Aluminum.
4. General Exhaust: Galvanized Steel, Aluminum.
5. Outside Air Intake: Galvanized Steel.
C. Ductwork Pressure Class:
1. Low Velocity Supply (Heating Systems): Scheduled System ESP+0.25", round up
to next higher pressure class.
2. Low Velocity Supply (Systems with Cooling): Scheduled System ESP +0.5",
round up to next higher pressure class.
3. Return and Relief: 1 inch.
4. General Exhaust: Scheduled System ESP +1.0", round up to next higher
pressure class.
5. Outside Air Intake: 1 inch.
END OF SECTION
SECTION 233300 - AIR DUCT ACCESSORIES
PART 1 GENERAL
1.01 SECTION INCLUDES
A. Air turning devices/extractors.
B. Volume control dampers.
C. Flexible duct connections.
D. Duct access doors.
E. Fire dampers.
PART 2 PRODUCTS
2.01 AIR TURNING DEVICES/EXTRACTORS
A. Manufacturers: Krueger, Ruskin Company; Titus.
B. Multi -blade device with blades aligned in short dimension; steel or aluminum
construction; with individually adjustable blades, mounting straps.
2.02 VOLUME CONTROL DAMPERS
A. Manufacturers: Louvers & Dampers, Inc.; Nailor Industries Inc.; Ruskin Company,
Prefco Inc.
B. Fabricate in accordance with SMACNA HVAC Duct Construction Standards - Metal and
Flexible, and as indicated.
C. Single Blade Dampers: Fabricate for duct sizes up to 6 x 30 inch.
D. Multi -Blade Damper: Fabricate of opposed blade pattern with maximum blade sizes 8
x 72 inch. Assemble center and edge crimped blades in prime coated or galvanized
channel frame with suitable hardware.
E. End Bearings: Except in round ducts 12 inches and smaller, provide end bearings.
On multiple blade dampers, provide oil -impregnated nylon or sintered bronze
bearings.
F. The contractor shall provide either a mechanical or electrical cable operated
system wherever dampers are located in non -accessible areas.
1. Mechanical cable operator system shall be similar and equal to Young
Regulator Company, "Bowden Cable Control" system including damper, flexible
cable with casing and concealed ceiling regulator control.
2. Electrically operated damper control system shall be similar and equal to
United Enertech Corporation, "Power Balance" system including motor operated
damper, RJ -11 plenum rated cabling and flush ceiling or wall mounted RJ -11
jack in remote plate. Include one hand held battery pack operator pack to be
delivered to the Owner upon completion of the balancing.
2.03 FLEXIBLE DUCT CONNECTIONS
A. Fabricate in accordance with SMACNA HVAC Duct Construction Standards - Metal and
Flexible, and as indicated.
B. Flexible Duct Connections: Fabric crimped into metal edging strip.
1. Fabric: UL listed fire -retardant neoprene coated woven glass fiber fabric to
NFPA 90A, minimum density 30 oz per sq yd.
a. Net Fabric Width: Approximately 2 inches wide.
2. Metal: 3 inches wide, 24 gage thick galvanized steel.
2.04 DUCT ACCESS DOORS
A. Manufacturers: Acudor Products Inc.; Nailor Industries Inc.; Ruskin Company, SEMCO
Incorporated.
B. Fabricate in accordance with SMACNA HVAC Duct Construction Standards - Metal and
Flexible, and as indicated.
C. Fabrication: Rigid and close -fitting of galvanized steel with sealing gaskets and
quick fastening locking devices. For insulated ducts, install minimum 1 inch thick
insulation with sheet metal cover.
1. Less Than 12 inches Square: Secure with sash locks.
2. Up to 18 inches Square: Provide two hinges and two sash locks.
D. Access doors with sheet metal screw fasteners are not acceptable.
2.05 FIRE DAMPERS
A. Manufacturers: Louvers & Dampers, Inc.; Nailor Industries Inc.; Ruskin Company,
Prefco Inc.
B. Fabricate in accordance with NFPA 90A and UL 555, and as indicated.
C. Ceiling Dampers: Galvanized steel, 22 gage frame and 16 gage flap, two layers
0.125 inch ceramic fiber on top side with locking clip.
D. Horizontal Dampers: Galvanized steel, 22 gage frame, stainless steel closure
spring, and lightweight, heat retardant non -asbestos fabric blanket.
E. Curtain Type Dampers: Galvanized steel with interlocking blades. Provide
stainless steel closure springs and latches for horizontal installations or closure
under air flow conditions. Configure with blades out of air stream except for 1.0
inch pressure class ducts up to 12 inches in height.
F. Multiple Blade Dampers: 16 gage galvanized steel frame and blades, oil -impregnated
bronze or stainless steel sleeve bearings and plated steel axles, 1/8 x 1/2 inch
plated steel concealed linkage, stainless steel closure spring, blade stops, and
lock.
G. Fusible Links: UL 33, separate at 160 degrees F with adjustable link straps for
combination fire/balancing dampers.
PART 3 EXECUTION
3.01 INSTALLATION
A. Install accessories in accordance with manufacturer's instructions, NFPA 90A, and
follow SMACNA HVAC Duct Construction Standards - Metal and Flexible. Duct
construction and pressure class.
B. Provide duct access doors for inspection and cleaning before and after filters,
coils, fans, automatic dampers, at fire dampers, combination fire and smoke
dampers, and elsewhere as indicated. Provide minimum 8 x 8 inch size for hand
access, 18 x 18 inch size for shoulder access, and as indicated. Provide 4 x 4
inch for balancing dampers only. Review locations prior to fabrication.
C. Locate all dampers and control elements in accessible areas wherever possible to
avoid access doors. Provide ceiling access doors for access to all dampers and
control elements located above inaccessible ceiling areas. Provide minimum 12 x 12
inch size for hand access, 18 x 18 inch size for shoulder access, and as indicated.
Provide 4 x 4 inch for balancing dampers only. Review locations prior to
fabrication.
D. Provide balancing dampers at points on supply, return, and exhaust systems where
branches are taken from larger ducts as required for air balancing. Install
minimum 2 duct widths from duct take -off.
E. Provide balancing dampers on duct take -off to diffusers, grilles, and registers,
regardless of whether dampers are specified as part of the diffuser, grille, or
register assembly. Do not locate dampers closer than 5 feet or 10 duct diameters
from the air terminal device, whichever is greater.
F. At fans and motorized equipment associated with ducts, provide flexible duct
connections immediately adjacent to the equipment.
G. At equipment supported by vibration isolators, provide flexible duct connections
immediately adjacent to the equipment
H. Provide fire dampers, at locations indicated, where ducts and outlets pass through
fire rated components, and where required by authorities having jurisdiction.
Install with required perimeter mounting angles, sleeves, breakaway duct
connections, corrosion resistant springs, bearings, bushings and hinges.
1. Demonstrate re -setting of fire dampers to Owner's representative.
END OF SECTION
SECTION 233423 - HVAC POWER VENTILATORS
PART 1 GENERAL
1.01 SECTION INCLUDES
A. Roof exhausters.
PART 2 PRODUCTS
2.01 MANUFACTURERS
A. Greenheck; Loren Cook Company, PennBarry, CaptiveAire.
2.02 POWER VENTILATORS - GENERAL
A. Performance Ratings: Determined in accordance with AMCA 210 and bearing the AMCA
Certified Rating Seal.
B. Sound Ratings: AMCA 301, tested to AMCA 300, and bearing AMCA Certified Sound
Rating Seal.
C. Fabrication: Conform to AMCA 99.
D. UL Compliance: UL listed and labeled, designed, manufactured, and tested as
suitable for the purpose specified and indicated.
2.03 ROOF EXHAUSTERS AND VENTILATORS
A. Fan Unit: V -belt or direct driven as indicated, with spun aluminum housing;
resilient mounted motor; 1/2 inch mesh, 0.62 inch thick aluminum wire birdscreen;
square base to suit roof curb with continuous curb gaskets.
B. Roof Curb: 20 inch high above the finished roof surface (compensate for roof
insulation thickness at fan location) self -flashing of galvanized steel or aluminum
construction with continuously welded seams, built-in cant strips, insulation and
curb bottom, and factory installed nailer strip.
C. Disconnect Switch: Factory wired, non -fusible, in housing for thermal overload
protected motor.
D. Backdraft Damper: Motor actuated (or gravity damper if depicted on design
drawings), aluminum multiple blade construction, felt edged with offset hinge pin,
nylon bearings, blades linked, and line voltage motor drive, power open, spring
return.
E. Sheaves: Cast iron or steel, dynamically balanced, bored to fit shafts and keyed;
variable and adjustable pitch motor sheave selected so required rpm is obtained
with sheaves set at mid-position; fan shaft with self -aligning pre -lubricated ball
bearings.
PART 3 EXECUTION
3.01 INSTALLATION
A. Install in accordance with manufacturer's instructions.
B. Provide sheaves required for final air balance at no additional expense to the
project.
C. Secure roof and wall exhausters with cadmium plated steel lag screws to roof curb
or structure.
D. Extend ducts to roof and wall exhausters into roof curb or wall structure.
Counterflash duct to roof or wall opening.
E. Install backdraft dampers (gravity or motorized as depicted on design drawings) on
inlet to roof and wall exhausters.
F. All roofing penetrations shall be flashed and weather sealed by 'the roofing
manufacturer's authorized roofing contractor at this Contractors expense. This
Contractor shall contract with the factory authorized roofing contractor for the
specific roofing system applicable to this project. The use of an unauthorized
roofing contractor may result in removal and replacement of the penetration systems
at this Contractor's expense.
END OF SECTION
SECTION 233700 - AIR OUTLETS AND INLETS
PART 1 GENERAL
1.01 SECTION INCLUDES
A. Rectangular ceiling diffusers.
B. Grid core exhaust and return grilles.
C. Wall registers and grilles.
1.02 SUBMITTALS
A. Product Data: Provide data for equipment required for this project. Review
outlets and inlets as to size, finish, and type of mounting prior to submission.
Submit schedule of outlets and inlets showing type, size, location, application,
accessories, and noise level.
1.03 QUALITY ASSURANCE
A. Test and rate air outlet and inlet performance in accordance with ASHRAE Std 70.
B. Test and rate louver performance in accordance with AMCA 500-L.
C. Code requirements shall supersede any conflicting requirements of this Section.
1.04 QUALIFICATIONS
A. Manufacturer Qualifications: Company specializing in manufacturing the type of
products specified in this Section, with minimum five years of documented
experience.
PART 2 PRODUCTS
2.01 MANUFACTURERS
A. Titus; Krueger; Price Industries; Carnes Company HVAC; Hart & Cooley, Ruskin.
2.02 RECTANGULAR CEILING DIFFUSERS
A. Type: Square, adjustable pattern, stamped, multi -core, or architectural plaque
diffuser to discharge air in 360 degree pattern with sectorizing baffles where
indicated.
B. Frame: Inverted T -bar type. In plaster ceilings, provide plaster frame and
ceiling frame. (To allow lift -out removal of the diffuser without removal of the
plaster frame.)
C. Fabrication: Steel with baked enamel off-white finish.
D. Accessories: Opposed blade damper and multi -louvered equalizing grid with damper
adjustable from diffuser face.
2.03 GRID CORE EXHAUST AND RETURN GRILLES
A. Type: Fixed grilles of 1/2 x 1/2 x 1 inch louvers.
B. Fabrication: Aluminum with factory off-white enamel finish.
C. Frame: 1-1/4 inch margin with countersunk screw mounting.
D. Frame: Channel lay -in frame for suspended grid ceilings where face size exceeds 18
x 18 inch.
E. Damper (if specified on drawings): Integral, gang -operated, opposed blade type
with removable key operator, operable from face.
2.04 WALL SUPPLY REGISTERS/GRILLES
A. Type: Streamlined and individually adjustable blades, 3/4 inch minimum depth, 3/4
inch maximum spacing with spring or other device to set blades, horizontal face,
double deflection.
B. Frame: 1-1/4 inch margin with countersunk screw mounting and gasket.
C. Fabrication: Steel with 20 gage minimum frames and 22 gage minimum blades, steel
and aluminum with 20 gage minimum frame, or aluminum extrusions, with factory
off-white enamel finish.
D. Damper: Integral, gang -operated opposed blade type with removable key operator,
operable from face.
E. Rough Service: Provide front pivoted or welded in place blades, securely fastened
to be immobile.
PART 3 EXECUTION
3.01 INSTALLATION
A. Install in accordance with manufacturer's instructions.
B. Check location of outlets and inlets and make necessary adjustments in position to
conform with architectural features, symmetry, and lighting arrangement.
C. Install diffusers to ductwork with air tight connection.
D. Provide balancing dampers on duct take -off to diffusers, and grilles and registers,
despite whether dampers are specified as part of the diffuser, or grille and
register assembly.
E. Paint ductwork visible behind air outlets and inlets matte black.
END OF SECTION
SECTION 237413.13 - PACKAGED OUTDOOR ROOF TOP UNITS - ELECTRIC HEAT
PART 1 GENERAL
1.01 SECTION INCLUDES
A. Packaged roof top units ? Electric Heat.
B. Thermostat controls.
C. Roof mounting curb and base.
D. Economizer.
E. Power exhaust.
PART 2 PRODUCTS
2.01 MANUFACTURERS
A. Carrier Corporation; Trane Inc.; Lennox Industries; York; AAON Incorporated.
2.02 AIR CONDITIONING UNITS
A. General: Roof mounted units having electric heating elements when indicated and
electric refrigeration.
B. Description: Self-contained, packaged, factory assembled and prewired, consisting
of cabinet and frame, supply fan, when indicated provide electric heating elements,
controls, air filters, refrigerant cooling coil and compressor, enthalpy economizer
and power exhaust fan where indicated on the drawings, condenser coil and condenser
fan.
C. Electrical Characteristics: As scheduled on the Drawings.
D. Disconnect Switch: Factory mount disconnect switch on equipment.
2.03 FABRICATION
A. Cabinet: Steel with baked enamel finish, including access panels with screwdriver
operated flush cam type fasteners or doors with piano hinges with locking handles.
Structural members shall be minimum 18 gage, with access doors or panels of minimum
20 gage.
B. Insulation: one inch thick neoprene coated glass fiber with edges protected from
erosion.
C. Supply Fan: Forward curved centrifugal type, resiliently mounted with V -belt
drive, adjustable variable pitch motor pulley, and rubber isolated hinge mounted
motor or direct drive as indicated. Isolate complete fan assembly.
D. Air Filters: 2 inch thick disposable media in metal frames.
E. Roof Mounting Curb: Galvanized steel, channel frame, insulated, with gaskets,
nailer strips. Provide roof curb of adequate height to provide a unit mounting
height of 12" or greater above the top of the roof surface with the curb mounted to
the building structure. Roof curb height must compensate for the roof insulation
thickness to meet this requirement.
F. Vibration Isolation Curb: Only when indicated on the Drawings.
2.04 ELECTRIC HEATING COIL
A. Helical nickel -chrome resistance wire coil heating elements with refractory ceramic
support bushings or finned tube heating elements easily accessible with automatic
reset thermal cut-out, built-in magnetic contactors, galvanized steel frame,
control circuit transformer and fuse, manual reset thermal cut-out, airflow proving
device, load fuses.
B. Controls: Start supply fan before electric elements are energized and continue
operating until air temperature reaches minimum setting, with switch for continuous
fan operation.
2.05 EVAPORATOR COIL
A. Provide copper tube aluminum fin coil assembly with galvanized drain pan and
connection.
B. Provide capillary tubes or thermostatic expansion valves for units of 6 tons
capacity and less, and thermostatic expansion valves and alternate row circuiting
for units 7.5 tons cooling capacity and larger.
2.06 COMPRESSOR
A. Provide hermetic or semi -hermetic compressors, 3600 rpm maximum, resiliently
mounted with positive lubrication, crankcase heater, high and low pressure safety
controls, motor overload protection, suction and discharge service valves and gage
ports, and filter drier.
B. Five minute timed off circuit to delay compressor start.
C. Outdoor thermostat to energize compressor above 35 degrees F ambient.
2.07 CONDENSER COIL
A. Provide copper tube aluminum fin coil assembly with subcooling rows and coil guard.
B. Provide direct drive propeller fans, resiliently mounted with fan guard, motor
overload protection, wired to operate with compressor.
2.08 MIXED AIR CASING
A. Dampers: Provide outside, return, and relief dampers with damper operator and
control package to automatically vary outside air quantity. Outside air damper to
fall to closed position. Relief dampers may be gravity balanced.
B. Gaskets: Provide tight fitting dampers with edge gaskets maximum leakage 5 percent
at 2 inches pressure differential.
C. Damper Operator: 24 volt with gear train sealed in oil.
D. Damper Operator, Units 7.5 Ton Cooling Capacity and Larger: 24 volt with gear
train sealed in oil with spring return on.
E. Mixed Air Controls: Maintain selected supply air temperature and return dampers to
minimum position on call for heating and above 75 degrees F ambient, or when
ambient air enthalpy exceeds return air enthalpy.
2.09 INTEGRATED ECONOMIZER:
A. Economizer shall be furnished and installed complete with outside air and relief
dampers and controls.
B. Provide low -leakage, opposed blade dampers.
C. Economizer shall be capable of introducing up to 100% outdoor air for minimum
ventilation as well as free cooling.
D. Damper actuator shall be electronic, fully modulating design.
E. Economizer outdoor hood shall be pre -painted and fully integrated with the unit.
F. Provide differential enthalpy sensor capable of comparing heat content (temperature
and humidity) of outdoor air and indoor air and controlling economizer cut -in point
at the most economical level.
2.10 POWER EXHAUST:
A. Package shall include exhaust fan(s) and damper for units with economizer to
control over -pressurization of building including integral pressure controls.
2.11 OPERATING CONTROLS
A. Provide low voltage, adjustable thermostat to control heater stages in sequence
with delay between stages, compressor and condenser fan, and supply fan to maintain
temperature setting.
1. Include system selector switch (off -heat -auto -cool) and fan control switch
(auto -on).
2. The Mechanical Contractor shall provide all control wiring between thermostat
and unit control panel and any required remote sensors.
3. Locate thermostat in room as shown.
4. Electric solid state microcomputer based room thermostat, located as
indicated. Provide remote sensors when indicated on the Drawings.
5. Room thermostat shall incorporate:
a. Automatic switching from heating to cooling.
b. Preferential rate control to minimize overshoot and deviation from set
point.
C. Set-up for four separate temperatures per day.
d. Instant override of set point for continuous or timed period from one
hour to 31 days.
e. Short cycle protection.
f. Programming based on weekdays, Saturday and Sunday.
g. Switch selection features including imperial or metric display, 12 or
24 hour clock, keyboard disable, remote sensor, fan on -auto.
6. Room thermostat display shall include:
a. Time of day.
b. Actual room temperature.
C. Programmed temperature.
d. Day of week.
e. System mode indication: heating, cooling, auto, off, fan auto, fan on.
f. Stage (heating or cooling) operation.
PART 3 EXECUTION
3.01 INSTALLATION
A. Install in accordance with manufacturer's instructions and NFPA 90A.
B. Mount units on factory built roof mounting curb providing watertight enclosure to
protect ductwork and utility services. Install roof mounting curb level. Install
roof mounting curb so that it bears on the building structure, not on top of roof
deck or roofing materials. Provide restraints where required by local codes.
C. Provide cooling condensate drain piping (and overflow piping if required) to
approved location. Condensate piping shall be Schedule 40 galvanized steel pipe,
Type L copper tube, or PVC. Contractor shall verify the selected material meets
with the approval of all State, local authorities and utility company requirements.
Verification of compliance of the selected piping material is the sole
responsibility of the installing Contractor.
Condensate piping located within the building shall be insulated with 1/2 inch
thick glass fiber or flexible elastomeric cellular foam insulation. Only metallic
piping systems will be allowed in return air plenum ceiling space.
END OF SECTION
`� .,•fie i
�s ..
�r�Urrrrr!ri�„
fY
-r-
LU
W
O
Z^
O
O
a
w clX
lJJ
W � LL
Z~OcAcW�
CLZ i- ZUZJ
H>a�oV
W ?
; CO) a 04 000
a
3��N
Z z
aUJ
Ln
0 0
U
cs (0 CL CO CO
project no.
XXXXXX00
drawn check by
HDU BB
9
E
Z
O
Z
V
O p�
U)
O
J J
=
J J
N
a
U
0
t-4
3
Z N
M
Z
af �
CD N
ZO Ur)O
M V
co
H
U > r- LL M
O
W
0
Z co Z CEW
�
Oa06'W
N
JLU CO M
W (D _-4 W
m O a7
J
>-_J>z
LU � U H
project no.
XXXXXX00
drawn check by
HDU BB
9
®
M
W
U
0
t-4
U�
M
V.-
Z
W
H
W
ID
N
>-_J>z
Q_UJW
CO
M
Q
U
project no.
XXXXXX00
drawn check by
HDU BB
9
N
FULL SCALE (24X36):
1/8" = V-0"
HALF-SIZE (12X18):
1/16"= V-0"
(unless otherwise noted)
sheet
Mml 4
■
MECHANICAL
SPECIFICATIONS