HomeMy WebLinkAboutB14-0240_2014-130.238000 Decentralized HVAC Equipment_1411771260.pdf CCD-2 18 SEPTEMBER 2014
SECTION 238000— DECENTRALIZED HVAC EQUIPMENT
PART 1 - GENERAL
1.1 DESCRIPTION OF WORK:
A. Extent of terminal unit work is indicated on drawings and schedules, and by requirements of
this section.
B. Types of terminal units required for project include the following:
1. Baseboard radiation.
2. Finned tube radiation.
3. Coils.
4. Unit Heaters
C. Refer to other Division 23 sections for piping; ductwork; testing, adjusting and balancing of
terminal units; not work of this section.
D. Refer to Division 26/1 section for the following work; not work of this section.
1. Power supply wiring from power source to power connection on terminal units.
2. Provide the following electrical work as work of this section, complying with
requirements of Division-26 sections:
a. Control wiring between field-installed controls, indicating devices, and terminal
unit control panels.
1) Control wiring specified as work of Division 23 for Automatic Temperature
Controls is work of that section.
E. Refer to other Division 23 sections for automatic temperature controls not factory installed,
required in conjunction with terminal units; not work of this section.
1.2 QUALITY ASSURANCE:
A. Manufacturer's Qualifications: Firms regularly engaged in manufacture of terminal units, of
types and sizes required, whose products have been in satisfactory use in similar service for
not less than 5 years.
B. Codes and Standards:
1. l=B=R Compliance: Test and rate baseboard and finned tube radiation in accordance
with l=B=R, provide published ratings bearing emblem of I=B=R.
2. ARI Compliance: Provide coil ratings in accordance with ARI Standard 410
"Forced-Circulation Air-Cooling and Air-Heating Coils".
3. ASHRAE Compliance: Test coils in accordance with ASHRAE Standard 33 "Methods
of Testing Forced Circulation Air Cooling and Heating Coils".
4. UL Compliance: Provide electrical components for terminal units, which have been
listed and labeled by UL.
1.3 SUBMITTALS:
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A. Product Data: Submit manufacturer's technical product data, for terminal units showing
dimensions, capacities, ratings, performance characteristics, gauges and finishes of materials,
and installation-startup instructions.
B. Shop Drawings: Submit manufacturer's assembly-type shop drawings indicating terminal unit
dimensions, weight loading, required clearances, construction details, field connection details
and methods of assembly of components.
C. Wiring Diagrams: Submit manufacturer's electrical requirements for power supply wiring to
terminal units. Submit manufacturer's ladder-type wiring diagrams for interlock and control
wiring. Clearly differentiate between portions of wiring that are factory-installed and portions to
be field-installed.
D. Record Drawings: At project closeout, submit record drawings of installed systems products
in accordance with requirements of Division 23.
E. Maintenance Data: Submit maintenance instructions, including lubrication instructions, filter
replacement, motor and drive replacement, control, accessories, "trouble-shooting"
maintenance guide, and spare parts lists. Include this data, product data, and shop drawings
in maintenance manuals; in accordance with requirements of Division 23.
1.4 DELIVERY, STORAGE, AND HANDLING:
A. Handle terminal units and components carefully to prevent damage, breaking, denting and
scoring. Do not install damaged terminal units or components; replace with new.
B. Store terminal units and components in clean dry place. Protect from weather, dirt, fumes,
water, construction debris, and physical damage.
C. Comply with Manufacturer's rigging and installation instructions for unloading terminal units,
and moving them to final location.
PART 2 - PRODUCTS
2.1 MANUFACTURERS:
A. Manufacturer: Subject to compliance with requirements, provide products by one of the
following:
1. Baseboard Radiation
a. Slant/Fin Corp.
b. Vulcan
c. Sterling Radiator; Div. of Reed National Corp.
d. Trane
e. Weil-McLain, Marley Co.
f. Rittling
2. Finned Tube Radiation
a. Dunham-Bush, Inc.
b. Slant/Fin Corp.
c. Vulcan
d. Sterling Radiator; Div. of Reed National Corp.
e. Trane
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f. Rittling
3. Coils:
a. Aerofin Corp.
b. Corp.
c. Dunham-Bush, Inc.
d. McQuay Inc.
e. Trane (The) Co.
f. York; Div. of York International
g. Precision Coils
4. Unit Heaters
a. Airtherm Mfg. Co.
b. Vulcan
c. Dunham-Bush, Inc.
d. McQuay Inc.
e. Modine Mfg. Co.
f. Trane
g. Rittling
2.2 BASEBOARD RADIATION:
A. General: Provide (hot water) (steam) (electric) baseboard radiation of lengths, wall to wall
enclosure, in locations as indicated, of capacities, style, and having accessories as scheduled.
B. Cabinets: Minimum 20-ga cold-rolled steel, one-piece back and top panel, front panel with
integral damper. Provide steel brackets inserted in back/top panel, to support element and
front panel. Provide standard/custom/prime coat baked enamel finish on topside and front
panel only.
C. Elements: Copper tube and aluminum fins, with slide mechanism between element and
support brackets to eliminate expansion and contraction noises.
D. Accessories: Provide the following accessories:
1. End panels, inside and outside corners, and enclosure extensions.
2. Removable 18" long cover access section in front of valves, balancing cocks, and traps.
3. Factory-mounted dampers.
4. Sill extensions.
5. Mullion channels.
6. Pilaster covers.
2.3 FINNED TUBE RADIATION:
A. General: Provide (hot water) (steam)finned tube radiation of lengths, wall to wall enclosure,
in locations as indicated, of capacities, style, and having accessories as scheduled.
B. Cabinets: Minimum 18/16/14 ga. cold-rolled steel, continuous 20-ga. partial height/full height
backplate, minimum 16/18/14 ga. front. Brace and reinforce front minimum of 4'-0"o.c.
without visible fasteners.
C. Elements: Copper tube and aluminum fins, with tube mechanically expanded into fin collars to
eliminate noise and ensure durability and performance at scheduled ratings.
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D. Finish: Unfinished zinc coated steel/flat black heat resisting paint backplate, standard factory
color selected baked enamel finish/[custom color as selected by Architect in baked enamel
finish on front, sides, top and accessories.
E. Accessories:
1. End panels, inside and outside corners, and enclosure extensions.
2. Removable 18" long hinged cover access section in front of valves, balancing cocks,
and traps.
3. Factory-mounted dampers.
4. Sill extensions.
5. Mullion channels.
6. Pilaster covers.
2.4 COILS:
A. General: Provide coils of size and in location indicated, and of capacities and having
performance data as scheduled. Certify coil capacities, pressure drops, and selection
procedures in accordance with ARI 410.
B. Heating Coils:
1. Fins: Construct of continuous aluminum or copper configurated plate-fin type with full
fin collars for accurate spacing and maximum fin-tube contact.
2. Tubes: Construct of copper tubing, expanded into fin collars for permanent fin-tube
bond and expanded into header for permanent leaktight joint.
3. Headers: Construct of gray cast iron for coils 33" high and smaller. Hydrostatically test
to 400 psi before assembly. Construct of round seamless copper tube for coils over 33"
high.
4. Casings: Construct of 16-ga continuous coated galvanized steel with fins recessed into
channels to minimize air bypass.
5. Testing: Proof test coils at 300 psi, leak test at 200 psi under water.
6. Coil Types: Provide the following coil types as indicated, and as scheduled.
a. Hot Water to 200 psi, 220 deg. F (104 deg. C): Provide 2-row, 5/8"tubes,
same-end connection coil. Provide rolled tube-to-header joints for coil heights
33" and smaller. Provide brazed tube-to-header joints for coil heights over 33".
2.5 UNIT HEATERS:
A. General: Provide unit heaters in locations as indicated, and of capacities, style, and having
accessories as scheduled.
B. Horizontal Unit Heaters:
1. Casings: Construct of steel, phosphatized inside and out, and finished with standard
color baked enamel finish. Provide motor mounted panel, minimum of 18 ga steel.
Fabricate casing to enclose coil, louvers, and fan blades. Provide louvers for 4 way air
diffusion.
2. Fans: Construct of aluminum, and factory balance. Provide fan inlet orifice, smooth,
and drawn into casing back panel.
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C. Vertical Unit Heaters:
1. Casings: Construct of steel, phosphatized inside and out, and finished with standard
color baked enamel finish. Design casing to enclose fan, motor, and coil, design fan
orifice formed into discharge panel. Provide air diffusers as scheduled.
2. Fans: Construct of aluminum and factory balance. Design so motor and fan assembly
is removable through fan outlet panel.
D. Coils: Construct of plate type aluminum fins, mechanically bonded to copper tubes. Design
coil for use in hot water applications.
E. Motors: Provide totally enclosed motors, with built in overload protection, having electrical
characteristics as scheduled.
PART 3 - EXECUTION
3.1 INSPECTION:
A. Examine areas and conditions under which terminal units are to be installed. Do not proceed
with work until unsatisfactory conditions have been corrected in manner acceptable to
Installer.
3.2 INSTALLATION OF BASEBOARD RADIATION:
A. General: Install baseboard radiation as indicated, and in accordance with manufacturer's
installation instructions.
B. Locate baseboard radiation on outside walls as indicated, run cover continuous wall-to-wall
unless otherwise indicated.
C. Center elements under windows. Where multiple windows occur over units, divide element
into equal segments centered under each window.
D. Install end caps where units butt against walls. Install access panels centered in front of each
shutoff valve, balancing cock, or temperature control valve.
3.3 INSTALLATION OF FINNED TUBE RADIATION:
A. General: Install finned tube radiation as indicated, and in accordance with manufacturer's
installation instructions.
B. Locate finned tube radiation on outside walls as indicated, run cover wall-to-wall unless
otherwise indicated.
C. Center elements under windows. Where multiple windows occur over units, divide element
into equal segments centered under each window.
D. Install end caps where units butt against walls. Install access panels centered in front of each
shutoff valve, balancing cock, steam trap, or temperature control valve.
3.4 INSTALLATION OF COILS:
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A. General: Install coils as indicated, and in accordance with manufacturer's installation
instructions.
B. Mount coils on steel supports to form banks or stacks as indicated, brace, secure to air intake
chamber. Place in location to permit installation of bypass damper if required, provide steel
baffles where required to prevent bypassing of air.
C. Pitch coil casings for drainage, not less than 1/8"toward return connections, except where
drainage feature is included in coil design.
D. Provide for each bank of cooling coils, drain pan(s) under each coil supported off of floor of
sufficient height to allow installation of condensate drain pipe trap to allow drainage of
condensate from pan when installed on suction side of fan. Provide condensate drain piping
from drain pan connection to nearest adequate floor drain. Plug any unused drain connection.
E. Provide for each steam coil unit, steam supply connection with strainer, gate valve, automatic
temperature regulating valve, condensate return connection with vacuum breaker, f&t trap,
and gate valve, as indicated.
F. Provide for each hot or chilled water coil unit, water supply, return connection, strainer, gate
valves, automatic temperature regulating valve, balancing cocks, as indicated.
G. Provide electric wiring for each electric duct heater in accordance with manufacturer's
installation instructions and Division 26.
3.5 INSTALLATION OF UNIT HEATERS:
A. General: Install unit heaters as indicated, and in accordance with manufacturer's installation
instructions.
B. Uncrate units and inspect for damage. Verify that nameplate data corresponds with unit
designation.
C. Hang units from building substrate, not from piping. Mount as high as possible to maintain
greatest headroom possible unless otherwise indicated.
D. Support units with rod type hangers anchored to building substrate.
E. Install piping as indicated.
F. Protect units with protective covers during balance of construction.
3.6 ELECTRICAL WIRING:
A. General: Install electrical devices furnished by manufacturer but not specified to be
factory-mounted. Furnish copy of manufacturer's wiring diagram submittal to Electrical
Installer.
B. Verify that electrical wiring installation is in accordance with manufacturer's submittal and
installation requirements of Division-26 sections. Do not proceed with equipment start-up until
wiring installation is acceptable to equipment installer.
3.7 ADJUSTING AND CLEANING:
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A. General: After construction is completed, including painting, clean unit exposed surfaces,
vacuum clean terminal coils and inside of cabinets.
B. Retouch any marred or scratched surfaces of factory-finished cabinets, using finish materials
furnished by manufacturer.
C. Install new filter units for terminals requiring same.
3.8 START-UP:
A. Start-up, test, and adjust terminal units in accordance with manufacturer's published start-up
instructions. Adjust for proper airflow where applicable.
END OF SECTION 238000
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