SECTION 15450

PLUMBING EQUIPMENT

PART 1 GENERAL

SECTION INCLUDES

Water Heaters.

Packaged water heating systems

Domestic water heat exchangers.

Water storage tanks.

Water softeners.

Pumps.

Water pressure booster system.

PRODUCTS FURNISHED BUT NOT INSTALLED UNDER THIS SECTION

Section 01010 - Summary of Work:	Owner installed water storage tanks.

Section [_____-__________]: Placement of water storage tanks.

PRODUCTS INSTALLED BUT NOT FURNISHED UNDER THIS SECTION

Section 01010 - Summary of Work:	Owner furnished water storage tanks.

Section [_____-__________]: Supply of water storage tanks for placement by this Section.

RELATED SECTIONS

Section 15140 - Supports and Anchors.

Section 15242 - Vibration Isolation.

Section 16180 - Equipment Wiring Systems: Electrical characteristics and wiring connections.

REFERENCES

ANSI/ASHRAE 90A - Energy Conservation in New Building Design.

ASME Section VIIID - Pressure Vessels; Boiler and Pressure Vessel Codes.

ANSI/NFPA 30 - Flammable and Combustible Liquids Code.

ANSI/NFPA 54 - National Fuel Gas Code.

ANSI/NFPA 58 - Storage and Handling of Liquified Petroleum Gases.

ANSI/NFPA 70 - National Electrical Code.

ANSI/UL 1453 - Electric Booster and Commercial Storage Tank Water Heaters.

ANSI/UL 174 - Household Electric Storage Tank Water Heaters.

ANSI/NEMA 250 - Enclosure for Electrical Equipment (1000 Volts Maximum).

SUBMITTALS

Submit under provisions of Section [01300.] [________.]

Shop Drawings:

Include heat exchanger dimensions. size of tappings, and performance data.

Include dimensions of tanks, tank lining methods, anchors, attachments, lifting points, tappings, and

drains.

Product Data:

Include dimension drawings of water heaters indicating components and connections to other equipment and piping.

Indicate pump type, capacity, power requirements, and affected adjacent construction.

Submit certified pump curves showing pump performance characteristics with pump and system operating point plotted. Include NPSH curve when applicable.

Provide electrical characteristics and connection requirements.

Manufacturer's Installation Instructions.

OPERATION AND MAINTENANCE DATA

Submit under provisions of Section [01700.] [________.]

Include operation, maintenance, and inspection data, replacement part numbers and availability, and service depot location and telephone number.

QUALITY ASSURANCE

Perform Work in accordance with [State] [Municipality] of [________] standard.

Provide pumps with manufacturer's name, model number, and rating/capacity identified.

Ensure products and installation of specified products are in conformance with recommendations and requirements of the following organizations:

American Gas Association (AGA).

National Sanitation Foundation (NSF).

American Society of Mechanical Engineers (ASME).

National Board of Boiler and Pressure Vessel Inspectors (NBBPVI).

National Electrical Manufacturers' Association (NEMA).

Underwriters Laboratories (UL).

Ensure pumps operate at specified system fluid temperatures without vapor binding and cavitation, are non-overloading in parallel or individual operation, operate within 25 percent of midpoint of published maximum efficiency curve.

REGULATORY REQUIREMENTS

Conform to [AGA] [NSF] [NBBPVI] [ANSI/NFPA 54] [ANSI/NFPA 58] [ANSI/NFPA 70] [ANSI/UL 174] [ANSI/UL 1453] requirements for water heaters.

Conform to ASME Section VIIID for manufacture of pressure vessels for heat exchangers.

Conform to [ASME Section VIIID] [ANSI/NFPA 30] [ANSI/NFPA 31] for tanks.

DELIVERY, STORAGE, AND HANDLING

Deliver, store, protect and handle products to site under provisions of Section [01600.] [________.]

Provide temporary inlet and outlet caps.	Maintain caps in place until installation.

WARRANTY

Provide [five] [____] year warranty under provisions of Section [01700.] [________.]

Warranty: Include coverage of [domestic water heaters] [water storage tanks] packaged water heating systems] [in- line circulator] [submersible sump pumps] [sump pumps] [sewage ejectors].

EXTRA MATERIALS

Furnish under provisions of Section [01700.] [________.]

Provide [two] [____] of [________________].

PART 2 PRODUCTS

RESIDENTIAL GAS FIRED WATER HEATER

Manufacturers:

[_____________________________] Model [________].

Other acceptable manufacturers offering equivalent products.

[_________________________] Model [________].

[_________________________] Model [________].

[_________________________] Model [________].

Type: Automatic, natural gas-fired, vertical storage.

Performance:

Storage: [____] gal ([____] L) capacity.

Input: [____] Btuh ([____] kW)

Minimum recovery rate: [____] gph ([____] L/s) with 100 degrees F (38 degrees C) temperature rise].

Maximum working pressure: 150 psig (1000 kPa)

Tank: Glass lined welded steel with single flue passage, flue baffle and draft hood; thermally insulated with glass fiber and encased in corrosion-resistant steel jacket; baked-on enamel finish; floor shield and legs.

Controls: Automatic water thermostat and built-in gas pressure regulator; temperature range adjustable from 120 to 170 degrees F (49 to 77 degrees C), cast iron or sheet metal burner, safety pilot and thermocouple.

Accessories:	Brass water connections and dip tube, drain valve, high density magnesium anode, and ASME temperature and pressure relief valve.

COMMERCIAL GAS FIRED WATER HEATER

Manufacturers:

[_____________________________] Model [________].

Other acceptable manufacturers offering equivalent products.

[_________________________] Model [________].

[_________________________] Model [________].

[_________________________] Model [________].

Type: Automatic, natural gas-fired, vertical storage.

Performance:

Storage: [____] gal ([____] L) capacity.

Input: [____] Btuh ([____] kW)

Minimum recovery rate: [____] gph ([____] L/s) with 100 degrees F (38 degrees C) temperature rise].

Maximum working pressure: 150 psig (1000 kPa)

Tank: [Glass lined] [Copper lined] welded steel [ASME labelled]; multiple flu passages, 4 inch (100 mm) diameter inspection port, thermally insulated with minimum 2 inches (50 mm) glass fiber, encased in corrosion-resistant steel jacket; baked-on enamel finish; floor shield and legs.

Accessories:	Brass water connections and dip tube, drain valve, high-density magnesium anode, and ASME rated temperature and pressure relief valve.

Approval: By AGA as automatic storage water heater and [automatic circulating tank water heater] [for] [operation at 180 degrees F (82 degrees C)] [operation on combustible floors] [high altitude installation].

Controls: Automatic water thermostat with temperature range adjustable from 120 to 180 degrees F (49 to 82 degrees C), gas pressure regulator, multi-ribbon or tubular burner, 100 percent safety shut-off pilot and thermocouple, flue baffle and draft hood.

****** [OR] ******

Controls: Automatic direct immersion thermostat with temperature range adjustable minimum 175 degrees F (97 degrees C) differential, automatic reset high temperature limiting thermostat, factory set at 205 degrees F (96 degrees C), gas pressure regulator, multi-ribbon or tubular burner, 100 percent safety shut-off pilot and thermocouple, [intermittent electronic ignition monitoring pilot and main flame, trial for re-ignition for momentary loss of flame, shut down of pilot and main burner in 2-4 seconds after loss of flame,] [and automatic flue damper] [and power venter].

RESIDENTIAL ELECTRIC WATER HEATER

Manufacturers:

[_____________________________] Model [________].

Other acceptable manufacturers offering equivalent

products.

[_________________________] Model [________].

[_________________________] Model [________].

[_________________________] Model [________].

Type: Automatic, electric, vertical storage.

Performance:

Storage: [____] gal ([____] L) capacity.

Input: [____] kW.

Minimum recovery rate: [____] gph ([____] L/s) with 100 degrees F (38 degrees C) temperature rise].

Maximum working pressure: 150 psig (1000 kPa)

Electrical Characteristics:

[____] volts, [single] [three] phase, 60 Hz [[____] minimum circuit ampacity].

[____] amperes maximum [fuse size] [circuit breaker size] [over current protection].

Tank: Glass lined welded steel, thermally insulated with [2] [3] inch ([50] [75] mm) thick glass fiber; encased in corrosion-resistant steel jacket; baked-on enamel finish.

Controls: Automatic water thermostat with [externally adjustable] temperature range from 120 to 170 degrees F (49 to 77 degrees C), flanged or screw-in nichrome elements, enclosed controls and electrical junction box [and operating light.]

Accessories:	Brass water connections and dip tube, drain valve, high- density magnesium anode, and ASME temperature and pressure relief valve.

COMMERCIAL ELECTRIC WATER HEATERS

Manufacturers:

[_____________________________] Model [________].

Other acceptable manufacturers offering equivalent products.

[_________________________] Model [________].

[_________________________] Model [________].

[_________________________] Model [________].

Type: Factory-assembled and wired, electric, [vertical] [horizontal] storage.

Performance:

Storage: [____] gal ([____] L) capacity.

Input: [____] kW.

Minimum recovery rate: [____] gph ([____] L/s) with 100 degrees F (38 degrees C) temperature rise].

Maximum working pressure: 150 psig (1000 kPa)

Electrical Characteristics:

[____] volts, [single] [three] phase, 60 Hz [[____] minimum circuit ampacity].

[____] amperes maximum [fuse size] [circuit breaker size] [over current protection].

Tank: [Glass lined] [Copper lined] welded steel; 4 inch (100 mm) diameter inspection port, thermally insulated with minimum 2 inches (50 mm) glass fiber encased in corrosion-resistant steel jacket; baked-on enamel finish.

Controls: Automatic immersion water thermostat; externally adjustable temperature range from 60 to 180 degrees F (16 to 82 degrees C), flanged or screw-in nichrome elements, high temperature limit thermostat.

Accessories:	Brass water connections and dip tube, drain valve, high-density magnesium anode, and ASME rated temperature and pressure relief valve.

****** [OR] ******

Tank: Welded steel ASME labelled pressure vessel; [glass] [phenolic] [cement] [copper] [nickel] lining, mounted on steel channel base with lifting lugs, insulated with [2] [___] inch ([50] [___] mm) glass fiber; enclosed with [16] [___] gage ([1.5] [___] mm)steel jacket; baked enamel finish.

Controls: Ventilated control cabinet, factory-wired with solid state progressive sequencing step controller, fuses, magnetic contactors, control transformer, pilot lights indicating main power and heating steps, control circuit toggle switch, electronic low-water (probe-type) cut-off, high temperature limit thermostat, flush-mounted temperature and pressure gages.

Heating Elements: Flange-mounted immersion elements; individual elements sheathed with Incoloy corrosion-resistant metal alloy, rated less than 75 Watts per square inch.

PACKAGED WATER HEATING SYSTEM

Manufacturers:

[_____________________________] Model [________].

Other acceptable manufacturers offering equivalent products.

[_________________________] Model [________].

[_________________________] Model [________].

[_________________________] Model [________].

System: Gas-fired [direct heating boiler,] [indirect water heating boiler,] circulating pump, controls, piping and valving as indicated, [storage tank,] [all mounted on structural steel skid].

Boiler:

Manufacturer: [_________________________] Model [________].

Other acceptable manufacturers offering equivalent products.

[_________________________] Model [________].

[_________________________] Model [________].

[_________________________] Model [________].

Performance:

Gross input: [___] Btuh ([_____W), at sea level.

Gross output: [___] Btuh ([___] W), at sea level.

Type: Gas-fired water tube boiler, with [copper finned tube heat exchanger,] [one inch (25 mm) OD, 13 gage (2.2 mm) steel boiler tubes and copper tube heat exchanger with bronze heads,] steel jacket with glass fiber insulation.

Boiler Trim:	Gas burner, thermometer and pressure gauge, immersion thermostats for operating and high limit protection, 100 percent safety shut-off electric gas valve with transformer, electronic safety pilot and pilot burner, gas pressure regulator, manual gas shut-off, low water cut off, ASME rated temperature and pressure relief valve, [coil relief valve, automatic boiler fill and expansion tank,] draft

invertor.

[Vertical] [Horizontal] storage tank:

Overall Length: [___] inches ([___]mm).

Diameter: [___] inches ([___] mm) diameter.

Nominal capacity: [___] gal ([___] L).

Working pressure: 150 psi (1000 kPa) ASME labelled.

Lining: [15 mils (0.38 mm) thick epoxy] [__________] lining extended through flanges and couplings.

Support:	Two welded tank saddles not less than 4 inches (100 mm) wide by 1/4 inch (6 mm) thick, mounted on 2 inch (50 mm) pipe stand with minimum four cross braced legs; sheet teflon isolation strip between tank and saddle; dielectric unions between tank and piping system.

Insulation: 3 inch (75 mm) glass fiber insulation with [steel] [aluminum] jacket.

Pump:

Pump Capacity: [___] gal/min ([___] L/sec)].

Type: All bronze, in-line circulation pump mounted [on boiler,] [between heater and storage tank,] controlled by tank mounted immersion thermostat set at [140 degrees F (60 degrees C.] [180 degrees F (82 degrees C).]

Electrical Characteristics:

[____] hp ([____] kW)], [____] rated load amperes.

[____] volts, [single] [three] phase, 60 Hz [[____] minimum circuit ampacity].

Thermostatic Valve: Three-way, self-contained, full line size, bronze body 1/2 to 2 inches (13 to 50 mm) size, iron body 2-1/2 inches (60 mm) and over, set at 140 degrees F (60 degrees C).

DOMESTIC WATER HEAT EXCHANGERS

Manufacturers:

[_____________________________] Model [________].

Other acceptable manufacturers offering equivalent products.

[_________________________] Model [________].

[_________________________] Model [________].

[_________________________] Model [________].

Tubes: U-tube type with 3/4 inch (19 mm) OD minimum seamless copper tubes suitable for 125 psi (860 kPa) working pressure.

Heads: [Cast iron or steel,] [Brass,] with [steel] [brass] tube sheets, threaded or flanged for piping connections.

Water Chamber and Tube Bundle: Removable for inspection and cleaning.

Coating: Prime coat exterior.

Code: ASME Code for pressure vessels for service pressures,

ASME "U" symbol stamped on heat exchanger.

Shell and Tube Type: Steel shell, with threaded or flanged piping connections and necessary tappings, steel saddle and attaching U-bolts, designed for heating fluid in shell and heated fluid in tubes.

****** [OR] ******

Immersion Type: Steel collar for welding to tank.

Accessories:

Wells for temperature regulator sensor [and high limit sensor] at water outlet.

ASME rated pressure and temperature relief valve on water outlet.

ASME rated pressure relief valves from tapping on heated water side, set at 120 psig (820 kPa).

ASME rated pressure relief valve on steam inlet on downstream side of control valve.

Thermometers and pressure gage tappings in water inlet and outlet.

Vacuum breaker and pressure gauge tapping with pigtail siphon in shell.

****** [OR] ******

Accessories:

Wells for temperature regulator sensor at heated water outlet.

ASME rated pressure and temperature relief valve on heated water discharge.

ASME rated pressure relief valves from tapping on heated water side, set at 120 psig (820 kPa).

ASME rated pressure relief valve on water inlet on downstream side of control valve.

Thermometers and pressure gauge tappings on water inlets and outlets.

DOMESTIC HOT WATER STORAGE TANKS

Manufacturers:

[_____________________________] Model [________].

Other acceptable manufacturers offering equivalent products.

[_________________________] Model [________].

[_________________________] Model [________].

[_________________________] Model [________].

Tank: Welded steel, ASME labelled for working pressure of [125] [___] psig ([870] [___] kPa), steel support saddles, tappings for accessories, threaded connections of stainless steel, access manhole.

Lining: [Corrosion-resistant concrete approximately 3/4 inch (20 mm) thick,] [0.015 inches (0.38 mm) epoxy,] [_____,] continued into flanged connections.

Openings: Up to 3 inches (75 mm), copper-silicone threaded; over 4 inches (100 mm), flanged [; flanged collar for heat exchanger].

Accessories: Tank drain, water inlet and outlet, thermometer range of 40 to 200 degrees F (4 to 93 degrees C), ASME pressure relief valve suitable for maximum working pressure.

DIAPHRAGM-TYPE COMPRESSION TANKS

Manufacturer:

[_________________________] Model [________].

Other acceptable manufacturers offering equivalent products.

[_________________________] Model [________].

[_________________________] Model [________].

[_________________________] Model [________].

Construction: Welded steel, tested and stamped in accordance with Section 8D of ASME Code; supplied with National Board Form U-1, rated for working pressure of 125 psig (860 kPa), with flexible [EPDM] diaphragm sealed into tank, and steel legs or saddles.

Accessories: Pressure gage and air-charging fitting, tank drain; precharge to [12] [_____] psig ([80] [_____] kPa).

Size: [_____] inches ([_____] mm) diameter, [_____] inches ([_____] mm) overall length, [_____] gal ([_____] L) capacity.

WATER SOFTENERS

Manufacturers:

[_____________________________] Model [________].

Other acceptable manufacturers offering equivalent products.

[_________________________] Model [________].

[_________________________] Model [________].

[_________________________] Model [________].

Performance:

Softening Capacity: [_____] grains ([_____] g).

Service Flow: [_____] gpm ([_____] L/s).

Electrical Characteristics:

[____] hp ([____] kW) [____] rated load amperes].

[____] volts, [single] [three] phase, 60 Hz, [____] minimum circuit ampacity].

Softener Tank: Glass fiber reinforced plastic tank, [____] x [____] x [____] inches ([____] x [____] x [____] mm) overall size, resin capacity [_____] cu ft ([_____] L).

Brine Tank: Glass fiber reinforced plastic tank, [____] x [____] x [____] inches ([____] x [____] x [____] mm) overall size, salt capacity [_____] lb ([_____] kg).

Control:	[[Brass] [Reinforced plastic] control valve cycled to regenerate from one to twelve day period] [Reinforced plastic control valve cycled to regenerate after adjustable metered quantity of water flow].

IN-LINE CIRCULATOR PUMPS

Manufacturers:

[_____________________________] Model [________].

Other acceptable manufacturers offering equivalent products.

[_________________________] Model [________].

[_________________________] Model [________].

[_________________________] Model [________].

Performance:

Flow: [_____] gpm ([_____] L/s), at [_____] feet ([_____] kPa) head.

Electrical Characteristics:

[____] hp ([____] kW) [____] rated load amperes].

[____] volts, [single] [three] phase, 60 Hz, [____] minimum circuit ampacity].

Casing: Bronze, rated for 125 psig (860 kPa) working pressure.

Impeller: Bronze.

Shaft: Alloy steel with integral thrust collar and two oil lubricated bronze sleeve bearings.

Seal: Carbon rotating against a stationary ceramic seat.

Drive: Flexible coupling.

PRESSURE BOOSTER SYSTEMS

Manufacturers:

[_____________________________] Model [________].

Other acceptable manufacturers offering equivalent

products.

[_________________________] Model [________].

[_________________________] Model [________].

[_________________________] Model [________].

System: Packaged with [two] [three] [four] pumps, factory assembled, tested, and adjusted; shipped to site as integral unit; consisting of pumps, valves, and galvanized piping, with control panel assembled on fabricated steel base with structural steel framework.

Performance:

Flow: [_____] gpm ([_____] L/s), at [_____] feet ([_____] kPa) head.

Motors: [____] hp ([____] kW).

Electrical Characteristics:

[____] volts, [single] [three] phase, 60 Hz, [____] minimum circuit ampacity].

[____] amperes maximum [fuse size] [circuit breaker size] [over current protection].

Controls and Instruments: Locate in NEMA 250 Type 1 general purpose enclosure with main disconnect interlocked with door, fused circuit for each motor, magnetic starters with three overloads, control circuit transformer with fuse protection, selector switch for each pump, low limit pressure switch, low pressure alarm light, running lights, current sensing devices, minimum run timers, manual alternation, and suction and discharge pressure gages.

Lead Pump: Operate continuously with lag [pump] [pumps] operating on system demand. Should lead pump fail to operate, next pump in sequence shall start automatically.

Time Delay Relay: Prevent lag [pump] [pumps] short cycling on fluctuating demands.

Thermal Bleed Circuit with Solenoid Valve: Prevent overheating during low demand.

Low Pressure Control: Stop pump operation if incoming water pressure drops to atmospheric.

Pump Switch: Permit manual or automatic operation.

Valving:	[Each pump outlet] [System discharge] combination pressure reducing and check valve to maintain constant system pressure. Provide gate or butterfly valves on suction and discharge of each pump. [Provide check valve on each pump discharge.]

Time Clock for Automatic Day-Night Changeover:

Day cycle: System shall operate continuously with pressure to fixtures maintained by pressure reducing valves.

Night Cycle:	[Pump] [Pumps] shall operate intermittently on pressure switch located near pressure tank operating pump for pre-determined adjustable time period.

[SUMP PUMPS] [SEWAGE EJECTORS]

Manufacturers:

[_____________________________] Model [________].

Other acceptable manufacturers offering equivalent products.

[_________________________] Model [________].

[_________________________] Model [________].

[_________________________] Model [________].

Performance:

Flow: [_____] gal/min ([_____] L/sec), at [_____] feet ([_____] meters) lift.

Motor: [____] hp ([____] kW), [____] volt, [single] [three] phase, 60 Hz.

Type: Vertical centrifugal, direct connected, [simplex] [duplex] arrangement.

Casing: Cast iron volute with radial clearance around impeller [, inlet strainer] [, slide away couplings].

Impeller: [Cast iron;] [Bronze;] [open non-clog,] [closed,] keyed to [corrosion resistant alloy steel] [stainless steel] shaft.

Support: Cast iron pedestal motor support on steel floor plate with gas tight gaskets.

Bearings: [Forced grease] [Oil] lubricated bronze sleeve spaced maximum 48 inches (1200 mm) and grease lubricated ball thrust at floor plate.

Drive: Flexible coupling to vertical, solid shaft ball bearing electric motor.

Sump: Steel cover plate [with steel curb frame for grouting into concrete sump] [on steel sump basin] with inspection opening and cover, and alarm fittings.

Controls (Simplex): Float switch with float rod, stops, and corrosion resistant float, and separate pressure switch high level alarm with transformer, alarm bell and stand-pipe.

****** OR ******

Controls (Duplex): Float operated mechanical alternator with float rod, stops, and corrosion resistant float to alternate operation of pumps, cut-in second pump on rising level or lead pump failure, [separate pressure switch high level alarm with transformer, alarm bell, and standpipe,] [and extra set of wired terminals for remote alarm circuit] [and emergency float switch with float rod, stops, and corrosion resistant float to operate both pumps on failure of alternator.]

SUBMERSIBLE [SUMP PUMPS] [SEWAGE EJECTORS]

Manufacturers:

[_____________________________] Model [________].

Other acceptable manufacturers offering equivalent products.

[_________________________] Model [________].

[_________________________] Model [________].

[_________________________] Model [________].

Performance:

Flow: [_____] gpm ([_____] L/s), at [_____] feet ([_____] meters) lift.

Motor: [____] hp ([____] kW), [____] volt, [single] [three] phase, 60 Hz.

Type: Completely submersible vertical centrifugal.

Casing: [Cast iron] [Bronze] pump body and oil filled motor chamber.

Impeller: [Cast iron;] [Bronze;] [open non-clog,] [closed,] [stainless steel] [corrosion resistant alloy steel] shaft.

Bearings: Ball bearings.

Accessories: Oil resistant [6] [____] foot ([2] [____] m) cord and plug [with three-prong connector] for connection to electric wiring system [including grounding connector].

Servicing: Slide-away coupling consisting of discharge elbow secure to sump floor, movable bracket, guide pipe system, lifting chain and chain hooks.

Controls: Integral [diaphragm] [mercury switch] type level controls [with separate liquid level control high level alarm.]

****** [OR] ******

Motor control panel containing across-the-line electric motor starters with ambient compensated quick trip overloads in each phase with manual trip button and reset button, circuit breaker, control transformer, electro mechanical alternator, hand-off-automatic selector switches, pilot lights, high water alarm pilot light, reset button and alarm horn. Provide mercury switch liquid level controls, steel shell switch encased in polyurethane foam with cast iron weight for pump on (each pump), pump off (common), and alarm.

PART 3 EXECUTION

WATER HEATER INSTALLATION

Install water heaters in accordance with manufacturer's instructions and to [AGA] [NSF] [ANSI/NFPA 54] [UL] requirements.

Coordinate with plumbing piping and related [fuel piping] [gas venting] [electrical] work to achieve operating system.

DOMESTIC WATER HEAT EXCHANGER INSTALLATION

Install tanks in accordance with manufacturer's instructions.

Install unit with clearance for tube bundle removal without disturbing other installed equipment or piping.

Pipe relief valves and drains to nearest floor drain. [Pitch shell for condensate drain to traps.]

Support unit [on pipe stand.] [____________________.]

Connect steam branch line from top of main. Pipe in flexible manner, pitched with steam flow, with pipe union connections. Provide steam pressure gauge at exchanger inlet.

Provide steam traps and valves as indicated.

DOMESTIC HOT WATER STORAGE TANK INSTALLATION

Install tanks in accordance with manufacturer's instructions.

Provide [steel pipe] [__________] support for tanks, independent of building structural framing members.

Clean and flush tank [prior to delivery to site.	] [after installation.] Seal until pipe connections are made.

PUMP INSTALLATION

Install in accordance with manufacturer's instructions.

Ensure shaft length allows sump pumps to be located minimum 24 inches (600 mm) below lowest invert into sump pit and minimum 6 inches (150) clearance from bottom of sump pit.

Provide air cock and drain connection on horizontal pump casings.

Provide line sized isolating valve and strainer on suction and line sized soft seated check valve and balancing valve on discharge.

Decrease from line size with long radius reducing elbows or reducers. Support piping adjacent to pump such that no weight is carried on pump casings. Provide supports under elbows on pump suction and discharge line sizes 4 inches (100 mm) and over.

Ensure pumps operate at specified system fluid temperatures without vapor binding and cavitation, are non-overloading in parallel or individual operation, and operate within 25 percent of midpoint of published maximum efficiency curve.

Align and verify alignment of base mounted pumps prior to start-up.

WATER HEATER SCHEDULE

Drawing Code	DWH-1 DWH-2	DWH-3 DWH-4

Manufacturer:

Model:

Input:

Recovery:

Recovery Temp. Rise:

Storage Capacity:

Volt/phase/cycle:

DOMESTIC WATER HEAT EXCHANGER SCHEDULE

Drawing Code HE-1 HE-2 HE-3 HE-4

Location:

Service:

Heating Media

Type:

Entering:

Leaving:

Flow:

Max. Head Loss:

Fouling Factor:

Working Pressure:

Heated Media

Type:

Entering:

Leaving:

Flow:

Max. Head Loss:

Fouling Factor:

Working Pressure:

TANK SCHEDULE

Drawing Code	TK-1	TK-2	TK-3	TK-4

Location

Service

Capacity

Diameter

Length

PUMP SCHEDULE

Drawing Code	P-1	P-2	P-3	P-4

Manufacturer:

Model No.:

Location:

Service:

Capacity:

Head:

Minimum Efficiency:

Seal Type:

Motor Size:

Motor volt/phase/cycle:

END OF SECTION