Double Stack

htproducts.com

Double Stack

Advanced Heating

& Hot Water Systems

A TRUE

10 : 1

Turndown Ratio

Double Stack

Volume Water Heater

Btuh Modulation Rates

100,000 -1,000,000

170,000 -1,700,005

Built in Redundancy

(No Downtime)

Small Footprint

Prepiped Reverse Return

Stainless Steel Heat Exchanger

Gas Fired Commercial

Volume Water Heater

An Intelligent Design that Delivers Highly Efficient

Water Heating with 92% Thermal Efficiency


MOD CON DOUBLE STACK VWH • A Look Inside

Vent Out

Cold Water

Inlet

Hot Water

Outlet

Pressure

Relief

Valve

Brass Tee for

VWH Circulator

Pump

Drain Valve

Temperature &

Pressure Gauge

Eco High Limit

Condensate

Collection

System

Digital

Display

Control

Stainless

Steel

Heat

Exchanger

Combustion

Blower

Gas Line

Gas

Valve

Adjustable

Leveling

Feet

MOD CON D S • Additional Features

MOD CON D S • Optional Equipment

• Superior Condensate Collection

System (Patent Pending) Easy to

Service with Overflow Protection

• PVC – CPVC – Stainless Steel

Venting

• Vents Up to 150 feet, Combined

• Adjustable Legs

• Direct Vent Sealed Combustion

• Models Available in Natural

or LP Gas

• Easy Access to Wiring and Field

Service of Combustion Heat

Exchanger

• Flow Switch (Standard)

• High Limit Manual Reset

• Removable Front Cover Allows

Easy Access to Burner Assembly

• Zero Clearance to All

Combustible Surfaces

• Factory Installed AGA/ASME

Rated Relief Valve

• PC Monitoring for History –

System Operation (Optional)

• Self Diagnostic Electronic Control

with Digital Readout to Monitor

System Parameters

• System Sensor (Part # 7250P-324)

• Indirect Sensor (Part # 7250P-325)

• 6” Stainless Steel Outside Termination Vent Kit (V3000)

• High and Low Gas Pressure Switch Kit with Manual Reset

(Part # 7350P-600)

• U.L. 353 Compliant Low Water Cut-Off Interface Kit with

Manual Reset (Part # 7350P-601)

• Alarm System (Part # 7350P-602) (to monitor any failure)

• PC Interface Cable (Part # 7250P-320)

• Boiler Caster Kit (Part # 7350P-604)

• Mod Con Condensate Neutralizer (Part # 7350P-611)


MOD CON DOUBLE STACK VWH • Features

Combustion System

• Modulating Burner with

a True 10 to 1 Turndown

• Whisper Quiet Operation

• Low NOx Operation

• High Grade Inconel Burner

• Reliable Spark Ignition

• Combined Vent System

• Gas Valve (Tested to UL, FM,

CSA Standards)

Heat Exchanger

• All Stainless Steel Construction

• No Gaskets, Welded Construction,

ASME Approved

• 150 PSI Relief Rated

• Easy to Service

Integrated Control System

• Built-In Sequencer for up to 4

Mod Con Double Stacked VWH Units

-Top & Bottom Boilers are Sequenced

• Digital Display with Led Status Indicators

• Integrated Control Allows Only the Amount

of Heated Energy Required

• Control Feature Inputs for Outdoor Sensor,

0-10 VDC for Building Management System

and Indirect Sensor

• Manual Reset High Limit Switch (supplied)

• Flow Switch Monitoring Assures the Unit has

Adequate Flow Before Firing the Burner

• Multiple Pump Outputs: Boiler Pump,

System Pump, Indirect Pump

• 24 Volt Monitor for System Safety

• Dual Flame Sensing (Flame & Spark Ignition Probes)

Highly Efficient Condensing Technology,

means lower energy cost to you!

Commercial

Up to 1,700,005 Btuh

Perfect for high demand applications

including apartment buildings,

restaurants, hotels, schools, hospitals,

laundry facilities, office buildings and

other commercial jobs.

ASEE 1017 rated

anti-scald valve

(recommended)

vacuum breaker

(where required by code)

Superstor Ultra

coil booster tank

Tank

sensor

preferred

location

Single Point Connection:

Piping and Venting

Prepiped Reverse Return

Quick Disconnect Design

Double Heat Exchanger

Design Offers Built-in

Fail Safe (No Downtime)

hot water supply

expansion

tank

recirculation line

cold water

System/Pipe Sensor

(used if not located at tank)

constant

circulation

flow switch

Mod Con DS VWH

with Storage tank

condensate

drainage

99

97

95

Up to 92% Thermal

Efficiency

93

91

Space Savings

89

87

40 60 100 140 160

Return Water Temperature (°F )

HTP @ 20% HTP @ 60% HTP @ 100%

PERCENTAGE OF THE MOD CON FIRING RATE

High Efficiency

Master / Follower

Control System

Mod Con VWH 1000


Dimensions & Specifications

Model A B C D E F G H J K L M N O

Mod Con VWH 1000 72.5” 20.5” 36” 13.75” 8.375” 46” 6” 13.625” 14.5” 33.25” 43.75” 66.75” 63.25” 43.375”

Mod Con VWH 1700 72.5” 20.5” 36” 13.75” 8.375” 64.5” 8.25” 20” 18.75” 43.5” 62.375” 88.50” 63.25” 59”

Please note: all dimensions are approximate and heights do not include adjustable legs.

FUEL SAVINGS: (based on running

hours, calculated using FTC-published average

energy costs, Jan. 2009; $1.21 per therm) The cost

of fuel in some areas of the country has increased

by almost 40% in just one year. The highly efficient

modulating output of the Mod Con DS VWH will

provide a maximum payback on fuel savings. As

the charts below illustrate, savings can result

in a payback period in less than three years when

compared to the conventional technology of other

boilers. The Mod Con could save you as much as

50% on your present fuel bills.

MOD CON 1 700 1 Year Fuel Savings

$12,000

$10,000

$11,998

A

A

O

N

O

N

$8,000

$6,000

$4,000

$2,000

Cost of

Operation 0

$40,000

$2,774

$4,160

$5,546

$ 4,286

$ 6,428

$ 8,146

$ 5,998

$ 9,000

85%

80%

75%

Yearly Hours

1000 1500 2000 of Operation

MOD CON 1 700 3 Year Fuel Savings

$35,000

C

C

B

B

Mod Con D S VWH 1000 (200 Gal. Minimum Tank size)

Inlet

Temp.

Outlet

Temp.

Combined Vent System

MOD CON DS VWH Recovery Ratings with Storage Tanks

Recovery

Gallons

Per Hour

1st Hr

Rating

With 200

Gallon

1st Hr

Rating

With 300

Gallon

1st Hr

Rating

With 500

Gallon

40° 80° 2,820 2,970 3,105 3,195

40° 90° 2,256 2,406 2,541 2,631

40° 100° 1,880 2,030 2,165 2,255

40° 110° 1,612 1,762 1,897 1,987

40° 120° 1,410 1,560 1,695 1,785

40° 130° 1,254 1,404 1,539 1,629

40° 140° 1,128 1,278 1,413 1,503

40° 150° 1,026 1,176 1,311 1,401

40° 160° 940 1,090 1,225 1,315

40° 170° 868 1,018 1,153 1,243

40° 180° 806 956 1,091 1,181

D

E

F

G

H

J

K

D

E

F

G

H

J

K

M

M

Mod Con DS VWH 1700 (350 Gal. Minimum Tank size)

Inlet

Temp.

Outlet

Temp.

Recovery

Gallons

Per Hour

L

L

1st Hr

Rating

With 350

Gallon

1st Hr

Rating

With 500

Gallon

1st Hr

Rating

With 750

Gallon

40° 80° 4,794 5,056 5,169 5,357

40° 90° 3,836 4,098 4,211 4,399

40° 100° 3,196 3,458 3,571 3,759

40° 110° 2,740 3,002 3,115 3,303

40° 120° 2,398 2,660 2,773 2,961

40° 130° 2,130 2,392 2,505 2,693

40° 140° 1,918 2,180 2,293 2,481

40° 150° 1,744 2,006 2,119 2,307

40° 160° 1,698 1,860 1,973 2,1 61

40° 170° 1,476 1,738 1,851 2,039

40° 180° 1,370 1,632 1,745 1,933

$30,000

$25,000

$20,000

$15,000

$10,000

$5,000

Cost of

Operation 0

MOD CON 1 0 00 1 Year Fuel Savings

$8,000

$7,000

$6,000

$5,000

$4,000

$3,000

$2,000

$1,000

Cost of

Operation 0

$8,322

$1,632

$12,480

1000 1500 2000

$2,522

$16,638

$3,528

$12,858

$2,270

$19,284

$3,780

$24,438

$5,294

$17,997

$3,026

$27,000

$5,042

1000 1500 2000

$35,994

Yearly Hours

of Operation

MOD CON 1000 3 Year Fuel Savings

$25,000

$20,000

$15,000

$10,000

$5,000

Cost of

Operation 0

$4,896

$7,566

$10,584

$6,810

$11,340

$15,882

$9,078

$15,126

1000 1500 2000

$21,174

$7,058

85%

80%

75%

Yearly Hours

of Operation

85%

80%

75%

Yearly Hours

of Operation

85%

80%

75%

Model

BTU / hr

Input

Low Fire

Gross

Output

BTU / hr

Thermal

Efficiency

Boiler

Water

Volume

Supply/

Return

Conn.

Gas

Conn.

Vent

Dia.

Estimated

Shipping

Weight

High

Fan

Speed

Low

Fan

Speed

Fan

Speed at

Ignition

Mod Con VWH 1000 100,000-1,000,000 940,000 92% 8.4 Gal. 3" 2" 6" 1010 lbs 7200 1250 3000

Mod Con VWH 1700 170,000-1,700,005 1,600,000 92% 11.6 Gal. 3" 2.5" 8" 1160 lbs 6800 2200 3000

120 Braley Road, East Freetown, MA 02717 • www.htproducts.com MKTLIT-48 - 08 / 2013 © HTP

More magazines by this user
Similar magazines