Raypak FlexGas 302BD User manual

Catalog No.: 2000.303A Effective: 11-15-07 Replaces: 8-15-07
Job:
Engineer:
Contractor:
Preparer: Date:
Model: 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
Heat Exchanger
H Stamp
Headers
Glass-Lined Cast Iron – Standard
Bronze – Option A-1
ASME Inspected and Stamped
160 PSIG Working Pressure
National Board Approved
Fin Tubing
Copper – Standard
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
60 PSIG – Standard on Models
502BD-902BD
PSIG – Optional
Temperature and Pressure Gauge
Water Connections
Left – Standard
Right – Option A-6
Controls
120V, 60Hz, 1∅Power Supply
120/24V 60Hz Transformer
100% Shut-Off/Lockout
Hot Surface Ignition
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
Gas Train
Manual Gas Shut-Off Valve(s)
Gas Pressure Regulator
Safety Shut-Off Valve
Firing Control Valve
Firing Mode
On/Off (H8): Models 302BD,
402BD
2-Stage (H9): Models
302BD-902BD
Natural/Propane Gas
Design Certified ANSI Z21.13/
CSA 4.9
Gas Connection
Left – Standard
Right – Option Z-1
Construction
Indoor/Outdoor Construction
Enclosed Front Controls
Venting
Vent Location
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
Not required
Burner
Ultra-Low NOx: Less than 30 PPM
Temperature Controls
B-2 Tankstat, Single-Stage
(100-200°F)
B-3 Tankstat, 2-Stage (100-200°F)
B-6 Aquastat, 2-Stage (100-200°F)
B- TempTracker Digital Controller,
2-Stage
B- TempTracker Digital Controller,
4-Stage
Y-241 Electronic Sequencer, 4-Stage
Y-281 Electronic Sequencer, 8-Stage
Options
C-6 Ignition Module, Manual Reset
D-21 TruSeal®Direct Vent
F-10 Low Water Cut-Off, Remote Probe
I-1 High Limit Control, Auto Reset
P- Pump: HP, 120V, 1∅, 60Hz
Water Hardness: GPG
Cast Iron Bronze
Mounted Loose
Front Rear
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
X-2 SureRack Add-on
Regulatory Agency Requirements
Hi Delta®FlexGas®-Type H
Dual-Fuel Hot Water Boilers
Models 302BD-902BD
Patent Nos. 6,904,873 & 7,044,124;
other patents pending

Catalog No.: 2000.303A Effective: 11-15-07 Replaces: 8-15-07
Hi Delta FlexGas – Type H
Models 302BD-902BD Model
RATES OF FLOW AND PRESSURE DROPS
10°F ∆T 20°F ∆T 30°F ∆T Min. Flow Max. Flow
Model GPM
∆P (ft) GPM ∆P (ft) GPM ∆P (ft) GPM ∆P (ft) ∆TGPM ∆P (ft) ∆T
302BD 51 3.2 25 <1.0 N/
A
N/
A
20 <1 25 90 9.8 6
402BD 68 5.4 34 1.5 22 <1 20 <1 34 90 10.0 7
502BD 85 9.2 42 2.3 28 1.1 21 <1 40 90 10.5 9
652BD N/A N/A 55 4.0 36 1.8 28 1.1 40 90 10.7 12
752BD N/A N/A 64 5.5 42 2.5 32 1.6 40 90 11.0 14
902BD N/A N/A 76 8.5 51 3.8 38 2.2 40 90 11.8 17
Basis is 20 GPM or 40°F ∆T for minimum flow, 90 GPM for maximum flow.
NOTE: Pump location
varies based on model
and application
SPECIFICATIONS
A
pprox.
MBTUH
A
BGH
K
T W
A
mp. Shipping
Model Input Output Width Nat Pro NPT Draw* Wt. (Lbs)
302BD 300 252 36 41 1-1/4 3/4 2 5 6 18 6 405
402BD 399 335 43 41 1-1/4 3/4 2 6 6 18-1/2 6 470
502BD 500 420 50
35-1/2 1-1/4 3/4 2 6 6 22 6 570
652BD 650 546 60-1/2 30-1/2 1-1/4 3/4 2 8 6 27-1/4 6 615
752BD 750 630 67-1/2 27-1/2 1-1/4 1-1/4 2 8 6 30-3/4 6 700
902BD 900 756 78
34-1/2 1-1/4 1-1/4 2 8 6 36 7 765
* Without pump
NOTES:
1. Dimensions are in inches
2. Rates shown are for natural or propane gas, and
elevations up to 5,000 feet. For installation above
5,000 feet, please contact manufacturer.
3. Required natural gas supply pressure is 7 - 10.5” WC.
Required propane gas supply pressure is 11 - 13” WC.
Raypak, Inc. 2151 Eastman Avenue, Oxnard, CA 93030 [phone] Fax [phone] www.raypak.com