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15601-1

SECTION 15601

HYDRONIC HEATING SYSTEMS
PIPING AND SPECIALTIES

PART 1 - GENERAL

1.1

1.2

DESCRIPTION

A.

Work Included: Provide and install a complete hot water heating system including
all the required specialties and appurtenances as shown on the Drawings and as
specified herein.

Related Work Specified Elsewhere:

1. "HVAC - General" is specified in this Division.

2. “Steel Pipe & Fittings” is specified in Section 15061.

3. “Copper Pipe & Fittings” is specified in Section 15063.

QUALITY ASSURANCE

A.

Acceptable Manufacturers:

1. Valves:

Stockham.

Crane.

Nibco.

Walworth.

Or Approved Equal.
pecialties:

Bell & Gossett.
Taco.

Or Approved Equal.
nstruments:

Trerice.

U.S. Gauge.

Taylor.

Or approved equal.

MK
peste HOA TS

aeore

PART 2 - PRODUCTS

2.1

MATERIALS

A.

B.

General: Manufacturers' names given below are intended to identify type and style.
Products of other manufacturers may be acceptable upon the approval of the Engineer.
Pipe: Schedule 40 black steel or Type L or K copper.

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15601-2
HYDRONIC HEATING SYSTEMS
PIPING AND SPECIALTIES

Valves (general):

1. Gate Valves:

a. Uptoand including 2-1/2 inch - screwed or solder end, bronze body, rising
stem, solid bronze disc, 125 psi steam pressure. Equal to Nibco T-111 or
S-111.

2. Globe Valves:

a. Up to and including 2-1/2 inch - screwed or solder end, bronze body, TFE
disc, 125 psi steam pressure. Equal to Nibco T-211 or S-211.

3. Check Valves:

a. Up to and including 2-1/2 inch - screwed or solder end, bronze body,
Buna-N disc, 200 pst WOG cold pressure. Equal to Nibco T-413-W or S-
413-W.

4. Ball Valve: Acceptable in lieu of gate and globe valves for 2 inch and smaller,
full port bronze ball screwed or solder ends, 3-part bronze body, TFE or equal
resilient seat, lever handle, 400lb. WOG. Equal to NIBCO S-595-W.

Strainer:

1. "Y" Pattern: Bronze or cast iron body, screw or flange ends, 250 psi body,
stainless steel screen of 40 mesh.

2. Basket Type: Bronze or cast iron body, clamped cover, 125 psi working
pressure, perforated brass basket, equal to Mueller #125.

Air Separation (as indicated):

1. In Line: In-line cast iron or fabricated steel, removable strainer, 125lb ASME
Construction, Spirotherm, Spirovent or Equal.

Pressurized Diaphragm Expansion Tank:

Size and capacity as indicated on the Drawings.

Steel shell designed and constructed per ASME Section VIII.

Heavy duty butyl rubber diaphragm removable for inspection.

Working pressure - 125 psig.

Operating temperature - 240°F.

Vertical floor mounted style.

. Equal to Wessels NTA or equal.

riple Duty Valves

Equal to Bell & Gossett Model 3D or 3DS.

Cast iron body construction.

Designed to permit repacking under full line pressure.

Non-slam check valve with a spring loaded weighted disc and a calibrated

adjustment feature permitting regulation of pump discharge flow and shut off.

5. Acceptable in lieu of gate, check and balancing valve on discharge of each
pump.

Vents:

1. Provide vents at all piping high points and where indicated.

2. Automatic vents shall be %-inch connection, 125 PSI working pressure, brass
body with built-in air chamber. Provide gate valve between piping system and
vent.

3. Manual vents shall consist of a minimum 3/4-inch air chamber with 3/8-inch
piping and gate valve off top.

ALNEANDAAAKNS

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I.

15601-3
HYDRONIC HEATING SYSTEMS
PIPING AND SPECIALTIES

Thermometers:

1. | Furnish brass immersion thermowells where indicated on the Drawings.

2. Furnish two additional immersion thermometers suitable for all thermowells for
use in balancing and by operating personnel.

3. Furnish and install where indicated on the drawings 9-inch separable socket
mercury thermometer with a range of 30 to 240°F. Provide adjustable angle
type where required for proper visibility. Equal to Trerice industrial
thermometers.

Pressure Gauges:

1. | Furnish pressure gauge connections where indicated consisting of /4-inch take-
off and globe valve.

2. Furnish 0-100 PSI, 3-l/2-inch pressure gauge where indicated. Equal to Trerice
Model 600.

Expansion Compensator: Brass body with stainless steel or brass bellows capable of

l-inch minimum change in length.

Balancing/Flow Measuring Valve:

Meter connections with built-in check valve.

Integral pointer register in degree of valve opening.

Bubble tight shut-off.

125-pound working pressure.

. Equal to Bell & Gossett circuit setter.

ressure Relief Valve:

Diaphragm operated, ASME rated in BTU/hr.

Capacity shall exceed the maximum heating capacity of the protected device by

110% minimum. Set point shall be equal to or less than the normal working

pressure of the protected device.

3. Fluid shall not discharge into valve chamber.

4. Low blow-down differential.

5. | Equal to Bell & Gossett.

Ne PukRwn-

PART 3 - EXECUTION

3.1

INSTALLATION

A. Provide offsets in all pipe to place in proper position and avoid work of other trades.

B. Erect all piping to provide for easy and noiseless circulation of hot water under all
working conditions.

C. Use inverted eccentric fittings to reduce the size of the water mains.

D. Make proper allowances for the expansion and contraction of all piping. Anchor
piping where necessary to control expansion.

E. Install a sufficient number of unions for disassembling pipe around equipment.

F. Weld all steel piping 3 inches and larger in size. Weld or install screwed fittings in
pipe 2-1/2 inches and under in size.

G. Install piping level or slightly pitched upward in the direction of flow so that no air
pockets are formed in the piping.

H. Install pipe hangers to properly support all equipment and piping in accordance with

Specification Section 15094.

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3.2

3.3

K.
L

M.

15601-4
HYDRONIC HEATING SYSTEMS
PIPING AND SPECIALTIES

Sleeves and Plates:

1. | Provide and install sleeves sized to provide 1/4 inch minimum annular space
around pipes passing through masonry walls and floors. Allow all insulation to
pass through sleeves except where gas-tight calking is required.

2. | Where exposed pipes pass through finished walls, floors, ceilings, etc. provide
and set split cover plates.

Drains:

1. | Provide drain valves where shown on the Drawings, at all low points, and at all
equipment.

2. Drains shall be 1/2 inch hose valve style.

Provide and install dielectric unions at junction of pipes of dissimilar metals.
Provide and install control measurement and valves in piping systems that are
supplied by other trades.

Provide and install unions to allow removal of all control valves.

TESTING AND BALANCING

GUaAW pS

im

Perform a hydrostatic pressure test on all piping and equipment.

Test pressure shall be 100 psi or 1-1/2 times the working pressure, whichever is greater.
Repair, replace and rework, as required, to repair any defects and retest for approval.
Perform all testing prior to installation of insulation. Test systems in sections as
required to prevent delay of project.

Balance the entire hydronic heating system in accordance with applicable sections of
Division 1 and Section 15907 of this Division.

Operational Test: Upon completion of installation of all equipment and acceptance
of tests and balancing, perform a 24-hour continuous operational test in the presence
of the Engineers and Owner's representative to demonstrate proper operation of all
functions of the equipment and system.

PAINTING AND IDENTIFICATION

A.

All heating system piping, valves, pumps and equipment shall be painted and labeled
in accordance with Specification Section 09900.

END OF SECTION

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15602-1

SECTION 15602

STEAM HEATING SYSTEMS

PIPING AND SPECIALTIES

PART 1 - GENERAL

1.1

1.2

DESCRIPTION
Work Included: Furnish and install a complete steam heating system including all
required specialties and appurtenances as indicated on the Drawings and as herein
specified.
Related Work Specified Elsewhere: "Heating and Ventilating - General" is specified

A.

B.

in this Division.
QUALITY ASSURANCE
A. Valve Manufacturers:

1. Stockham.

2. Crane.

3. Fairbanks.

4. Walworth.

5. Or approved equal.
B. Specialty Manufacturers:

| Armstrong.

2 Sarco.

3. Meuller.

4. Hoffman.

5 Erwel.

6. Danfoss.

7. Or approved equal.
C. Instruments:

l. Terice.

2. US Gauge.

3. Taylor.

4. Or approved equal.

PART 2 - PRODUCTS

2.1

MATERIALS
A. General: Manufacturers’ names given below are intended to identify types and style.
Equal products of manufacturers listed above are acceptable.

B.

Pipe:
1.

2.

Steam: Schedule 40 black steel.

a. 2-1/2 inches and larger: welded.

b. 2 inches and smaller: screwed or welded.
Condensate: Schedule 80 black steel.

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H.

15602-2
STEAM HEATING SYSTEMS
PIPING AND SPECIALTIES

a. 1-1/2 inches and larger steel: welded.
b. 1-1/4 inches and smaller steel: screwed or welded.
c. All copper: silver solder joints.

Valves (general):

1. Gate Valve: Screwed brass, wedge disc, rising stem union bonnet, 125 PSI
steam, Stockham B-105.

2. Glove Valve: 150 PSI steam, screwed brass body, union bonnet, renewable
seat, plug seat, Stockham B29.

3. Check Valves: 200 PSI steam, screwed bronze or cast iron body replaceable or
regrinding disc, Stockham B-345.

4. Externally Piloted Pressure Reducing Valve: 20:1 rangeability, hardened
stainless steel working parts, Armstrong GP-2000 or equivalent.

Strainer: Screwed bronze or cast iron body, Y pattern, 250 PSI, 450 degrees’ steam,

monel, stainless steel or bronze screen.

Traps:

1. Float and Thermostatic:

a. Cast iron or semi-steel body.
b. Stainless steel float.
c. Balanced pressure phosphor bronze diaphragm type air vent.

2. Inverted Bucket Trap
a. Cast iron trap.

b. Stainless steel, free-floating valve mechanism.

Thermometers:

1. Furnish brass immersion thermowells where indicated on the Drawings.

2. Furnish two additional immersion thermometers suitable for all thermowells for
use in balancing and by operating personnel.

3. Furnish and install where shown on the drawings 9-inch separable socket
mercury thermometer with a range of 30 degrees to 240 degrees F. Provide
adjustable angle type where required for proper visibility. Equal to Trerice
industrial thermometers.

Pressure Gauges:

1. | Furnish pressure gauge connections where shown consisting of /%-inch take-off
any globe valve.

2. Furnish 0-100 PSI, 3-1/2-inch pressure gauge where indicated. Equal to Trerice
Model 601.

Expansion Compensator: Brass or cast iron body with stainless steel or brass bellows

capable of 1-inch minimum change in length.

PART 3 - EXECUTION

3.1 INSTALLATION

A.
B.
C.

Entire heating system shall be installed in a neat and workmanlike manner.

Provide offsets in all pipe to place in proper position and avoid work of other trades.

Eccentric fittings shall be used to reduce the size of the mains to allow condensate
drainage.

Make proper allowances for the expansion and contraction of all piping. Piping shall

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3.2

15602-3
STEAM HEATING SYSTEMS
PIPING AND SPECIALTIES

be anchored where necessary to control expansion.

E. Install a sufficient number of unions for disassembling pipe around equipment of this
Division and other Divisions.

F. Install piping pitched for proper condensate drainage.

G. Install pipe hangers to properly support all equipment and piping. Maximum span
between hangers shall be 10 feet. Hangers shall be sized so insulation passes through
hangers.

H. Sleeves and Plates:

1. Pipes passing through masonry walls or floors shall have sleeves sized to
provide %4-inch minimum annular space, all insulation shall pass through
sleeves except where gas-tight calking is required.

2. All holes through concrete plank shall be drilled in such locations as not to
weaken plank structurally.

3. | Where exposed pipes pass through finished walls, floors, ceiling, etc. provide
and set split cover plates.

I. Provide adequate support for all heating equipment installed. Furnish and install any
required inserts, braces, hangers, miscellaneous steel, etc. as may be required for
installation.

J. Install dielectric unions at junction of pipes of dissimilar metals.

K. Install control measurement and valves in piping systems that are supplied by other
trades.

L. Provide unions to allow removal of all control valves.

TESTING AND BALANCING

A. Perform a hydrostatic pressure test on all piping and equipment.

B. Test pressure shall be 100 psi or 1-1/2 times the working pressure, whichever is
greater.

C. Repair, replace and rework as required to repair any defects and retest for approval.

D. All testing shall be performed prior to installation of insulation. Test systems in
sections as required to prevent delay of the project.

E. Operational Test: Upon completion of installation of all equipment and acceptance

of tests and balancing perform a 24-hour operational test in the presence of the
Engineers and Owner's representative to demonstrate proper operation of all functions
of the equipment and system.

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15602-4
STEAM HEATING SYSTEMS
PIPING AND SPECIALTIES

3.3 PAINTING AND IDENTIFICATION
A. All heating system piping, valves, pumps and equipment shall be painted and labeled
in accordance with Specification Section 09900.

END OF SECTION

13089K

15604-1

SECTION 15604

AUTOMATIC TEMPERATURE CONTROL (ELECTRIC)

PART 1 - GENERAL

1.1 DESCRIPTION
A. Furnish, install and test an Automatic Temperature Control (ATC) system of the type

and function required on the Drawings and as herein specified.

1. Type of System: Electric.

Related Work Specified Elsewhere: "HVAC - General" is specified in this Division.
"Cabinets and Enclosures" is specified in Section 16160.

Other Trades: The automatic temperature control trades shall coordinate and
supervise other trades whose work affects the control systems.

Work Performed by Other Trades: The following incidental work shall be furnished
by the designated trade under the supervision of the automatic temperature control
(ATC) trade:

1. The heating/cooling trades shall:

a. Install automatic valves and separable wells that are specified to be
supplied as a portion of the control systems.

b. Furnish and install all necessary: valved pressure taps, water, drain and
overflow connections and piping.

2. The sheet metal trades shall:

a. Furnish and install all automatic dampers.

b. Provide necessary blank-off plates required to install dampers that are
smaller than duct size.

c. Assemble multiple section dampers with required interconnecting
linkages and extend required number of shafts through duct for external
mounting of damper motors.

d. Provide necessary sheet metal baffle plates to eliminate stratification and
provide air volumes specified. Locate baffles by experimentation and
affix and seal permanently in place only after stratification problem has
been eliminated.

e. Provide access doors or other approved means of access through ducts for
service to control equipment.

1.2 QUALITY ASSURANCE

A.

B.

The system shall be installed, tested, and balanced by competent mechanics regularly
employed by the temperature control manufacturer.
Acceptable Manufacturers:

1. Honeywell.

2. Johnson Service Co.
3. MCC Powers

4. Barber-Coleman

5. Robertshaw

6. or equal

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15604-2
AUTOMATIC TEMPERATURE CONTROL (ELECTRIC)

1.3 SUBMITTALS TO THE ENGINEER

A.

Shop drawings shall be submitted for approval as required by the General
Conditions. Shop drawings shall consist of, but not be limited to, the following:

l.

2.
3.

Manufacturer's literature for all equipment including maintenance and
operating instructions and parts lists.

Description of operation for all systems.

Electric wiring diagrams showing all wiring, and equipment including all inter-
connections on a terminal to terminal basis. Refer to ladder wiring diagrams
shown on the Drawings. Note any discrepancies due to actual system
submitted.

Panel layouts for all local and central panels, and panel sizes.

Valve and damper operator schedule showing size, configuration, capacity and
location of all equipment.

A detailed explanation of any control system that is different, or will function
differently than that specified.

14 JOB CONDITIONS
Scheduling of Work: Schedule all work so as not to delay the work of other trades.

A.

PART 2 - PRODUCTS

2.1 MATERIALS

General: The control system shall consist of all thermostats, temperature transmitters,
controllers, automatic valves and dampers, damper operators, control panels, and
other accessory equipment to fill the intent of the specification and provide for a
complete and operable system. All 24 volt control wiring shall be provided by the
automatic temperature control contractor as shown or required to provide a complete
system. Refer to Drawings for electrical wiring and interlocks. All panels and
devices shall meet the NEMA electrical classification of the space in which they are
installed. See Drawing Sheet E-1 for NEMA schedule.

Electric Line- Voltage Industrial Thermostat:

A.

Furnish and install industrial/heavy commercial grade, Line-Voltage type
thermostats in NEMA 12, 3R, 4/4X process and production areas capable of
directly activating heating or cooling equipment.

Thermostat shall be wall mounted in a heavy duty metal enclosure. The
enclosure shall meet the NEMA requirements of the are in which they are
installed. Minimum rating shall be dust tight, NEMA 12.

Switching shall be SPST with a minimum rating of 16 Full Load Amps (FLA)
and 80 Locked Rotor Amps (LRA) at 120 VAC or the full load rating of the
device(s) to be activated, whichever is greater.

Differential shall be fixed 3-5 deg. F.

Bulbs shall be corrosion resistant, shielded and either locally or remote mounted
as required.

Covers shall have temperature set point adjustment knob except when
concealed or removable key adjustment is noted. Scale range shall be 40 to 100
°F unless described otherwise in the control description under paragraph 3.1.

13089K