Advanced Heating & Hot Water Systems

One of a K ind Design f rom the I ns ide, Out !

HIGH MASS

Direct Flow or Primary / Secondary Piping

10 :1 Turndown Ratio

Superior Construction: Stainless Steel Titanium Blend

The EnduroTiCOMMERCIAL CONDENSING BOILER

®

Stainless Steel AISI 316 Ti Manufactured out of this extremely durable stainless steel and titanium blend

Up to 93% Thermal Efficiency

Superior Heat Transfer The reverse flame combustion chamber heats large amounts of hot water Cascade up to 8 Boilers (with boiler rotation) Mod/Bus interface for easy BMS system

Small Footprint Will fit through a standard door opening(ETI-750 model only) Caster wheels on the bottom of the boiler

CSD Compliant

Optional Equipment• System Sensor (7250P-324)• Indirect Tank Sensor (7250P-325)• High and Low Gas Pressure Switch Kit with Manual Reset (6300P-991)• 6” Stainless Steel Outside Termination Vent Kit (V3000)• Flow Switch Kit (6300P-990)• Manual Reset High Temperature Limit (6300P-998)• Alarm System (to monitor any failure) (7350P-602)• 928 PC Connection Kit with Software (7450P-330)• Condensate Neutralizer (7350P-611)

Additional Features• Superior condensate collection system• 10 year l imited warranty• Vents in PVC - CPVC - stainless steel – up to 140 equivalent feet (combined intake and exhaust)• Built-in UL-353 Approved Low Water Cut-Off• Field wiring connection board / Cascade wiring CAT 3 or 5• Adjustable leveling• Dr y contact for alarm output• Blocked vent pressure switch• Pressure and temperature gauge

1,000,000 & 750,000 Btuh Models Up to 93% Thermal Efficiency

Delta T/0-10V0-10V Output available for variable speed pumps to maintain consistent cooler boiler return temperatures to maximize efficiency

The EnduroTiSINGLE BOILER UNITS

The Hyper-Jet Combustion System with Modulating Inward Firing Burner

Corrugated Horizontal Flue Passages: Special surface increases heat exchange areafor higher efficiencies

EnduroTiModels Btuh Turndown

Ratio

Supply &Return

Pipe Size

Gas LineConnection

ThermalEfficiency

VentDiameter

Approx.ShippingWeight

ETI-750 750,000 10 : 1 2” 2” 93.2% 6” 800 LBS

ETI-1000 1,000,000 10 : 1 2.5” 2” 92.5% 6” 950 LBS

Condensing & Modulation, Large Water Content Heat Exchanger with Virtually No Pressure drop (Under 2 feet of resistance at a 100 GPM Flow) • Cascade up to 8 Boilers

Direct Flow Piping Configuration Single Unit10:1 Turndown Ratio

Direct Flow Piping Configuration Multiple Units20:1 Turndown Ratio

The EnduroTi Eliminates the Need for Primary–Secondary Piping

BALL VALVE

CIRCULATOR

PRESSURE RELIEF VALVE

PRESSURE GAUGE

EXPANSION TANK

STRAINER

AIR ELIMINATOR

COLD WATERINLET

VALVE

HOT WATEROUTLET

PRESSURE REDUCINGCHECK VALVEPRESSURE

GAUGE

MAKE-UPWATER LINE

PRESSURE RELIEF VALVE

EXPANSION TANK

WATER LINE

AIR ELIMINATOR

HOT OUTLET

CHECK VALVE

MAKE-UP

COLD INLET

BALL VALVE

BALL VALVE

STRAINER

VALVE

CIRCULATOR

PRESSURE REDUCING

PRESSURE GAUGE

A LookInside

Model ETI-750 ETI-1000Gas Connection 2" 2"

Max Gas Pressure 10.5" 10.5"

Min Gas Pressure 3.5" 3.5"

Max Working Pressure 75 psi 75 psi

Electrical Requirements 120 VAC/6 Amp Max

120 VAC/6 Amp Max

Water Connections 2" Flange 2 1/2" Flange

Min. Water Flow (GPM) 7.5 10

Max Water Flow (GPM) 75 100

Water Pressure Drop -Ft of Hd (20 Delta @ Max Fire)

2.85 1.85

Water Volume (Gallons) 38 61

Turndown 10:1 10:1

Air Intake/Exhaust Size 6" 6"

Vent Category IV IV

Thermal Efficiency 93.2% 92.5%

Approx Shipping Weight 800 950

Vent Materials PVC, CPVC, Polypropylene, or AL29-4C

Low Cost Install - Easy to fit info Most Spaces Multiple Piping and Venting Options

The EnduroTiVent Configurations - Installation Flexibility

LP-517-X10/06/16 LP-517-PP

10/06/16

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MODEL A B C D* E F G H J K L M

ETI-750 8-1/2" 16-1/2" 30-3/4" 32-3/4" 8-1/2" 49" 83" 8-1/4" 25" 43" 6-1/4" 13-3/4"

ETI-1000 9-1/4" 19-3/4" 36-1/4" 39-1/2" 7-1/4" 53" 85" 10-3/4" 25-3/4" 46-1/4" 6-1/4" 13-3/4"

MODEL SUPPLY/RETURNCONNECTION

GASCONNECTION

VENT DIAMETER SHIPPING WEIGHT

ETI-750 2" 2" 6" 800 lbs.

ETI-1000 2-1/2" 2" 6" 950 lbs.

LP-517-E06/29/15

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PLEASE NOTE: ALL DIMENSIONS ARE PRELIMINARY AND APPROXIMATE

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Dimensions A B C D E F G H I J K L M N OModel in in in in in in in in in in in in in in in

ETI-1000/900 49 1/2 7 3/8 40 9 41 7/8 6 41 52 3/8 70 1/4 21 1/2 44 3/8 33 3/8 35 7/8 2 1/2 7

ETI-800 49 1/2 8.5 32 5/8 8.5 401/2 6 41 51 1/2 70 1/4 22 3/4 43 3/4 30 3/4 30 3/4 2 6

Model BTU/hr Input Low Fire Gross Output BTU/hr Thermal Efficiency Boiler Water Supply/Return

Conn. Gas

ConnectionVent

DiameterShipping Weight

ETI-1000 100,000-1,000,000 920,000 92% 61 Gal 2-1/2" 2 in 6 in 1000 lbs

ETI-900 100,000-900,000 828,000 92% 61 Gal 2-1/2" 2 in 6 in 1000 lbs

ETI-800 100,000-800,000 736,000 92% 38 Gal 2" 2 in 6 in 850 lbs

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ETI-750 8-1/2" 16-1/2" 30-3/4" 32-3/4" 8-1/2" 49" 83" 8-1/4" 25" 43" 6-1/4" 13-3/4"

ETI-1000 9-1/4" 19-3/4" 36-1/4" 39-1/2" 7-1/4" 53" 85" 10-3/4" 25-3/4" 46-1/4" 6-1/4" 13-3/4"

MODEL SUPPLY/RETURNCONNECTION

GASCONNECTION

VENT DIAMETER SHIPPING WEIGHT

ETI-750 2" 2" 6" 800 lbs.

ETI-1000 2-1/2" 2" 6" 950 lbs.

LP-517-E06/29/15

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ETI-750 8-1/2" 16-1/2" 30-3/4" 32-3/4" 8-1/2" 49" 83" 8-1/4" 25" 43" 6-1/4" 13-3/4"

ETI-1000 9-1/4" 19-3/4" 36-1/4" 39-1/2" 7-1/4" 53" 85" 10-3/4" 25-3/4" 46-1/4" 6-1/4" 13-3/4"

MODEL SUPPLY/RETURNCONNECTION

GASCONNECTION

VENT DIAMETER SHIPPING WEIGHT

ETI-750 2" 2" 6" 800 lbs.

ETI-1000 2-1/2" 2" 6" 950 lbs.

LP-517-E06/29/15

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Dimensions

Single Unit Models A B C D E F G H J K L M

ETI-750 8.5” 16.5” 30.75” 32.75” 8.5” 49” 83” 8.25” 25” 43” 6.25” 13.75”

ETI-1000 9.25” 19.75” 36.25” 39.5” 7.25” 53” 85” 10.75” 25.75” 46.25” 6.25” 13.75”

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ETI-750 8-1/2" 16-1/2" 30-3/4" 32-3/4" 8-1/2" 49" 83" 8-1/4" 25" 43" 6-1/4" 13-3/4"

ETI-1000 9-1/4" 19-3/4" 36-1/4" 39-1/2" 7-1/4" 53" 85" 10-3/4" 25-3/4" 46-1/4" 6-1/4" 13-3/4"

MODEL SUPPLY/RETURNCONNECTION

GASCONNECTION

VENT DIAMETER SHIPPING WEIGHT

ETI-750 2" 2" 6" 800 lbs.

ETI-1000 2-1/2" 2" 6" 950 lbs.

LP-517-E06/29/15

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www.htproduc ts .com • 272 Duchaine B lvd, New Bedford, MA • MK TLIT-69 • © HTP 01/2018In accordance with our company policy of ongoing product improvement, HTP Inc. reserves the right to make changes without prior notice. • Preliminary product specifications