Double Stack

Advanced Heating
& Hot Water Systems
A TRUE
10 : 1
Turndown Ratio
BTU Modulation Rates
100,000 -1,000,000
170,000 -1,700,005
Built in Redundancy
(No Downtime)
Small Footprint
Prepiped Reverse Return
ASME Stainless Steel Heat Exchanger
Gas Fired Commercial Boiler
Also Available: Volume Water Heater
An Intelligent Design that Delivers Highly Efficient
Hydronic Heating with 94.1% Thermal Efficiency
SCAQMD Rule 1146.2
Heat Exchanger
Bears the ASME
“H” Stamp
Double Stack
MOD CON DOUBLE STACK • A Look Inside
Stainless Steel
Heat Exchanger
Pressure
Relief
Valve
Control
Inlet Nipple
Low Water
Sensor
Outlet Nipple
Drain Valve
Gas
Valve
Temperature &
Pressure Gauge
Eco High Limit
Condensate
Collection
System
Combustion
Blower
Gas Line
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
• Low Water Cutoff
Standard Equipment
• 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)
• Flow Switch Kit (Part #7450P-216)
MOD CON DOUBLE STACK • Features
Integrated Control System
• Built-In Sequencer for up to 4
Mod Con Double Stacked Boilers
-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
• Built-in Low Water Cut Off with Additional
Manual Reset High Limit Switch
• Multiple Pump Outputs – Boiler Pump
– System Pump – Indirect Pump
• 24 Volt Monitor for System Safety
• Dual Flame Sensing (Flame Probe & Spark
Ignition Probe)
Combustion System
• Modulating Burner with
a True 10 to 1 Turndown
• Whisper Quiet Operation
• Low NOx Operation
• High Grade Inconel Burner
• Reliable Spark Ignition
Mod Con 1700
• 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
Single Point Connection:
Piping and Venting
Prepiped Reverse Return
• Easy to Service
Highly Efficient Condensing Technology,
means lower energy cost to you!
99
Quick Disconnect Design
Double Heat Exchanger
Design Offers Built-in
Fail Safe (No Downtime)
97
95
Primary/Secondary
or Primary Direct Piping
93
91
89
87
40
60
100
140
160
Return Water Temperature (°F )
HTP @ 20%
HTP @ 60%
HTP @ 100%
Up to 94.1% Thermal Efficiency
Space Savings
High Efficiency
Master / Follower
Control System
Dimensions & Specifications
Model
Mod Con 1000
Mod Con 1700
B
A
C
D
E
F
G
H
J
K
L
M
N
F U E L S AV I N G S :
O
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”
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”
(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 D S 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
$2,000
O
Cost of
Operation 0
85%
$ 5,998
$ 6,42 8
$4,000
80%
$ 4,2 86
O
N
$ 4,16 0
N
$ 5,5 4 6
$6,000
A
$2 ,774
A
$ 8,14 6
$8,000
1000
75%
1500
Yearly Hours
of Operation
2000
M O D C O N 1700 3 Year Fuel Savings
$40,000
D
E
F
E
F
G
H
J
K
G
H
J
K
$35,000
$ 35,994
D
$30,000
Please note: all dimensions are approximate
and heights do not include adjustable legs.
$5,000
L
M
L
Cost of
Operation 0
M
1000
$27,000
$ 24,438
85%
$17, 9 97
$10,000
$19,284
$15,000
$12,858
Combined Vent System
$20,000
$ 16,638
C
$25,000
$12,480
C
B
$8,322
B
1500
80%
75%
2000
Yearly Hours
of Operation
M O D C O N 1 000 1 Year Fuel Savings
$8,000
Inside the MOD CON
$ 7,058
$7,000
$6,000
0
1000
85%
80%
$3,026
$3,780
$2,270
$2,522
$1,000
Cost of
Operation
$1,632
$2,000
$ 3,528
$3,000
$5,042
$ 5,294
$5,000
$4,000
1500
75%
2000
Yearly Hours
of Operation
MOD CON 1000 3 Year Fuel Savings
$25,000
Cost of
Operation
0
1000
$15,126
1500
85%
80%
$9,078
$11,340
$6,810
$7,566
$5,000
$4,896
$10,000
$ 10,584
$15,000
$ 15,882
$ 21,174
$20,000
75%
2000
Yearly Hours
of Operation
Model
BTU / hr
Input
Low Fire
Gross
Output
BTU / hr
Net I=B=R
BTU / hr
Thermal
Efficiency
Boiler
Water
Volume
Supply/
Return
Conn.
Mod Con 1000
100,000-1,000,000
940,000
818,000
94.1%
8.4 Gal.
3"
2"
6"
1010 7200 1250
3000
Mod Con 1700
170,000-1,700,005 1,600,000 1,390,000
94.1% 11.6 Gal.
3"
2.5"
8"
1160 6800 2200
3000
Gas Vent
Conn. Dia.
Est.
Ship
Wt.
120 Braley Road, East Freetown, MA 02717 • www.htproducts.com
High
Low
Fan
Fan
Fan
Speed at
Speed Speed Ignition
MKTLIT-42 - 09 / 2016 © HTP