Hi Delta® FlexGas® - Type H
Job:
Engineer:
Contractor:
Preparer:
Model:
Dual-Fuel Hot Water Boilers
Models 302BD-902BD
Date:
Indoor/Outdoor:
MBTUH Input:
Fast, Economical Natural-to-Propane Gas Switchover
100% Factory Fire Tested
84% Efficiency
Maximum Outlet Temperature: 230°F
Minimum Non-Condensing Inlet Temperature: 105°F
Thermal Shock Proof Heat Exchanger
Limited Twenty-Year Thermal Shock Warranty
Diagnostic Center with Fault History
PolyTuf Powder Coated Cabinet
No Combustible Floor Shield Required
Fan-Assisted Low NOx Burners
Patented Burner Security Blanket
Patent Nos. 6,904,873 & 7,044,124;
other patents pending
Heat Exchanger
Gas Train
Burner
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H Stamp
Headers
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Manual Gas Shut-Off Valve(s)
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Ultra-Low NOx: Less than 30 PPM
Gas Pressure Regulator
Safety Shut-Off Valve
Firing Control Valve
Firing Mode
Temperature Controls
Glass-Lined Cast Iron – Standard
B-2 Tankstat, Single-Stage
(100-200°F)
B-3 Tankstat, 2-Stage (100-200°F)
B-6 Aquastat, 2-Stage (100-200°F)
Bronze – Option A-1
ASME Inspected and Stamped
160 PSIG Working Pressure
National Board Approved
Fin Tubing
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On/Off (H8): Models 302BD,
402BD
2-Stage (H9): Models
302BD-902BD
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B-
TempTracker Digital Controller,
2-Stage
Copper – Standard
B-
TempTracker Digital Controller,
4-Stage
Cupro Nickel – Option A-3
ASME Steel Tube Sheet
Silicone High Temp. O-Rings
ASME Pressure Relief Valve
45 PSIG – Standard on Models
302BD and 402BD
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Natural/Propane Gas
Design Certified ANSI Z21.13/
CSA 4.9
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Y-241 Electronic Sequencer, 4-Stage
Y-281 Electronic Sequencer, 8-Stage
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Gas Connection
Options
Left – Standard
Right – Option Z-1
Construction
Indoor/Outdoor Construction
Enclosed Front Controls
C-6 Ignition Module, Manual Reset
D-21 TruSeal® Direct Vent
60 PSIG – Standard on Models
502BD-902BD
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F-10 Low Water Cut-Off, Remote Probe
I-1
High Limit Control, Auto Reset
PSIG – Optional
P-
Pump: HP, 120V, 1∅, 60Hz
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Temperature and Pressure Gauge
Water Connections
Venting
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Water Hardness:
Cast Iron
Mounted
GPG
Bronze
Loose
Rear
Vent Location
Left – Standard
Right – Option A-6
Top – Standard
Rear – Option D-14
Vent Termination Cap
Outdoor D-11
Indoor, Horizontal D-15
Indoor, Vertical (by others)
Combustion Air
In-Line Filter Kit (TruSeal
only) D-17
Air Intake Elbow D-16
Extractor – Optional
By others
Front
Controls
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P-26 Cold Water Start (See 2000.48)
S-1 Low Gas Pressure Switch, Manual
S-2 High Gas Pressure Switch, Manual
X-1 SureRack™ Kit
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120V, 60Hz, 1∅ Power Supply
120/24V 60Hz Transformer
100% Shut-Off/Lockout
Hot Surface Ignition
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X-2 SureRack Add-on
Remote Flame Sensor
High Limit Control, Manual Reset
On/Off Power Switch
Manual Shut-Off, Front-Mounted
Flow Switch
Blocked Vent Pressure Switch
Combustion Air Proving Switch
Economaster Pump Time Delay
Enable/Disable
Regulatory Agency Requirements
Not required
Catalog No.: 2000.303A
Effective: 11-15-07
Replaces: 8-15-07
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