Double Stack

Double Stack
Advanced Heating
& Hot Water Systems
Volume Water Heater
A TRUE
10 : 1
Turndown Ratio
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
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Water Heating with up to 98% Thermal Efficiency
Heat Exchanger
Bears the ASME
“H” Stamp
MOD CON DOUBLE STACK VWH • A Look Inside
Vent Out
Cold Water
Inlet
Hot Water
Outlet
Digital
Display
Pressure
Relief
Valve
Control
Stainless
Steel
Heat
Exchanger
Brass Tee for
VWH Circulator
Pump
Combustion
Blower
Drain Valve
Temperature &
Pressure Gauge
Gas Line
Gas
Valve
Eco High Limit
Condensate
Collection
System
Adjustable
Leveling
Feet
MOD CON D S • Additional Features
• 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
MOD CON D S • Optional Equipment
• 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
Commercial
• Modulating Burner with
a True 10 to 1 Turndown
Up to 1,700,005 Btuh
• Whisper Quiet Operation
• Reliable Spark Ignition
• Combined Vent System
hot water supply
• Gas Valve (Tested to UL, FM,
CSA Standards)
ASEE 1017 rated
anti-scald valve
Heat Exchanger
(recommended)
• All Stainless Steel Construction
• No Gaskets, Welded Construction,
ASME Approved
vacuum breaker
recirculation line
• High Grade Inconel Burner
cold water
Perfect for high demand applications
including apartment buildings,
restaurants, hotels, schools, hospitals,
laundry facilities, office buildings and
other commercial jobs.
• Low NOx Operation
Mod Con DS VWH
with Storage tank
(where required by code)
• 150 PSI Relief Rated
• Easy to Service
Integrated Control System
• Built-In Sequencer for up to 4
System/Pipe Sensor
(used if not located at tank)
Tank
sensor
preferred
location
Mod Con Double Stacked VWH Units
-Top & Bottom Boilers are Sequenced
constant
circulation
• 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)
H igh ly E f f i c i e nt Con d e n s i n g Te ch n o l o g y,
means l owe r e ne rg y co s t to yo u !
flow switch
Superstor Ultra
coil booster tank
expansion
tank
condensate
drainage
Single Point Connection:
Piping and Venting
Prepiped Reverse Return
Quick Disconnect Design
Double Heat Exchanger
Design Offers Built-in
Fail Safe (No Downtime)
Up to 98% Thermal
Efficiency
99
97
95
93
Space Savings
91
89
High Efficiency
87
40
60
100
140
160
Return Water Temperature (°F )
HTP @ 20%
HTP @ 60%
HTP @ 100%
Percentage of the Mod Con Firing R ate
Master / Follower
Control System
Mod Con VWH 1000
Dimensions & Specifications
Model
B
A
C
D
E
F
G
H
J
K
L
M
N
F u e l S av i ngs : (based on running
O
MODCON1000VWH 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”
MODCON1700VWH 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.
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.
M O D C O N 1 70 0 1 Year Fuel Savings
$11,998
$12,000
$ 9,000
$10,000
$ 8,14 6
$8,000
N
O
O
N
Cost of
Operation 0
$ 5,998
$ 6,42 8
85%
80%
$ 4,2 86
$2,000
A
$2 ,774
A
$ 4,16 0
$4,000
$ 5,5 4 6
$6,000
1000
75%
1500
Yearly Hours
of Operation
2000
M O D C O N 1700 3 Year Fuel Savings
$40,000
$ 35,994
$35,000
$30,000
$5,000
Cost of
Operation 0
L
4,794
3,836
3,196
2,740
2,398
2,130
1,918
1,744
1,698
1,476
1,370
5,056
4,098
3,458
3,002
2,660
2,392
2,180
2,006
1,860
1,738
1,632
5,169
4,211
3,571
3,115
2,773
2,505
2,293
2,119
1,973
1,851
1,745
$19,284
$27,000
$ 7,058
$5,042
$ 5,294
$3,026
$3,780
$ 3,528
80%
1500
75%
Yearly Hours
of Operation
2000
MOD CON 1000 3 Year Fuel Savings
5,357
4,399
3,759
3,303
2,961
2,693
2,481
2,307
2,161
2,039
1,933
$25,000
$20,000
$ 21,174
80°
90°
100°
110°
120°
130°
140°
150°
160°
170°
180°
1000
85%
$15,000
$10,000
$5,000
Cost of
Operation
0
1000
1500
$15,126
40°
40°
40°
40°
40°
40°
40°
40°
40°
40°
40°
Yearly Hours
of Operation
85%
80%
$9,078
3,195
2,631
2,255
1,987
1,785
1,629
1,503
1,401
1,315
1,243
1,181
0
$ 15,882
2,970
2,406
2,030
1,762
1,560
1,404
1,278
1,176
1,090
1,018
956
Cost of
Operation
$2,270
3,105
2,541
2,165
1,897
1,695
1,539
1,413
1,311
1,225
1,153
1,091
2,820
2,256
1,880
1,612
1,410
1,254
1,128
1,026
940
868
806
$1,000
1st Hr
1st Hr
Rating Rating
With 500 With 750
Gallon Gallon
$11,340
80°
90°
100°
110°
120°
130°
140°
150°
160°
170°
180°
Inlet Outlet
Temp. Temp.
$3,000
$2,000
Mod Con DS VWH 1700 (350 Gal. Minimum Tank size)
1st Hr
Recovery Rating
Gallons With 350
Per Hour Gallon
$5,000
$4,000
$6,810
40°
40°
40°
40°
40°
40°
40°
40°
40°
40°
40°
2000
$6,000
$ 10,584
Inlet
Temp.
75%
$7,000
M
MOD CON D S VWH Recovery Ratings with Storage Tanks
1st Hr
1st Hr
Rating Rating
With 300 With 500
Gallon Gallon
1500
80%
$8,000
M
1st Hr
Recovery Rating
Outlet Gallons With 200
Temp. Per Hour Gallon
1000
85%
M O D C O N 1 000 1 Year Fuel Savings
L
Mod Con D S VWH 1000 (200 Gal. Minimum Tank size)
$12,480
G
H
J
K
$8,322
G
H
J
K
$10,000
$2,522
Combined Vent System
E
F
$1,632
C
E
F
$7,566
C
B
$4,896
B
$12,858
$15,000
$ 16,638
$20,000
$17, 9 97
D
$ 24,438
$25,000
D
75%
2000
Yearly Hours
of Operation
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
MODCON1000VWH
100,000-1,000,000
940,000
97%
8.4 Gal.
3"
2"
6"
1010 lbs
7200
1250
3000
MODCON1700VWH
170,000-1,700,005
1,600,000
98%
11.6 Gal.
3"
2.5"
8"
1160 lbs
6800
2200
3000
120 Braley Road, East Freetown, MA 02717 • www.htproducts.com
MKTLIT-48 - 03/ 2015 © HTP