Bryan Boilers Boiler DR350 S150 FDG User Manual

Form No. 3710  
(Rev. 6/04)  
Bryan “Flexible Water Tube”  
DR Series  
Steam & Water Boilers  
250,000 to 850,000 BTUH  
Forced Draft Gas, Oil or Dual Fuel Fired  
Water Boiler  
DR850-W-FDGO  
Steam Boiler  
DR350-S150-FDG  
Originators of the “Flexible Water Tube” design  
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Guaranteed high efficiency performance and  
easy maintenance insure low cost operation  
All Bryan DR Series boilers offer these operating and performance features  
Guaranteedefficiency  
DR Series boiler occupies very little space in the boiler  
room. This can result in considerable savings in building  
costs.Pressurizedfiringpermitsminimumsizedbreach-  
ing and vent.  
Thebreakthroughinwatertubeboilerdesignthatproduced  
the DR Series provides operating efficiency so reliable,  
we guarantee it to be 83.5% for hot water boilers and  
82.5% (15 psi) or 80% (150 psi) or better for steam boilers.  
Multi-pass flue gas travel  
The Bryan Flexible Tube  
High velocity four-pass flue gas travel is obtained by a  
uniquebafflingsystem.Thiscontributestomaximumfire  
side heat transfer and overall high boiler efficiencies.  
Bryan’s exclusive “Flexible Tube” design  
eliminates the possibility of damage  
from so-called “thermal  
shock.Tubesareeasilyre-  
movable and replaceable,  
without welding or rolling,  
eliminatinglong,expensive  
downtime should repairs  
ever be required.  
Thermal blend water return  
Bryan’s unique “thermal blend” return blends cold or  
cooler return water with warmer boiler water abridging it  
todesignoperatingtemperatures.Aninjectortubedirects  
the “mixed” water flow through the downcomer to the  
lowerheaderandheatingsurfacesatatemperatureabove  
possiblecondensingconditions.Thisreducesthepossi-  
bilityofcoldspotsanddamagefromcorrosiveconden-  
sation.  
Water cooled furnace  
Theconfigurationofthewa-  
Water  
Boiler  
Steam  
Boiler  
ter tubes provides a water  
Positiveinternal  
circulation  
cooled combustion cham-  
ber. A high percentage of  
the heating surface is exposed to direct radiant heat,  
increasingwatervelocitiesandheattransfer.  
Each pass of the Bryan  
water tube slopes up-  
ward.Thisconfiguration,  
Large steam drum  
along with the large vol-  
ume down-comer water  
The steam drum has generous water volume and steam  
release area. This design, along with effective drum  
internal functions, results in a stable water level and  
produces extremely dry steam at all load conditions.  
legs, provides the ex-  
tremelyrapidnaturalther-  
malinternalcirculation,pro-  
motingbothhighefficiency  
Accessibility of furnace and tube area  
ofheattransferanduniform  
Innerpanelprovideseasyandcompleteaccesstofurnace  
andboilertubearea, aswellastoburnerhead. Allpanels  
areheavilyinsulatedandsealedtoboilerframe.Allaccess  
is from only one side.  
temperature throughout the  
boiler. Eliminating stress damage  
causedbyunequaltemperaturedistribu-  
tion is especially important for heating systems, particu-  
larly where intermittent or continuous low temperature  
waterreturnsmaybeencountered.  
Compact design, minimum floor space  
Withourcompactwatertubedesign,theoverallsizeofthe  
unitislessthanmostothertypesofboilers.Needingonly  
24"fortuberemoval,andononlyonesideoftheboiler,the  
Hotwaterboiler  
Bryan DR Series Boilers Standard and Optional Equipment  
OptionalconstructiontoASMEPower  
BoilerCoderequirementsfortempera-  
turesexceeding240°Fand/orpressure  
exceeding160psitomaximumof285°  
Foperatingand300°F designtempera-  
ture and 250 psi.  
STANDARD EQUIPMENT FURNISHED  
OPTIONAL EQUIPMENT,  
EXTRA COST  
Waterboiler  
switch, control panel, all controls in-  
stalledandwired.  
Combinationthermometerandaltitude  
gauge, ASME Code rated boiler relief  
valve,watertemperaturecontrol(240°F  
max std.), high limit control, probe  
LWCO.  
1. Manual reset high limit control  
2. Manual reset low water cutoff  
3. Auxiliary low water cutoff  
4. Combinationlowwatercutoff  
andfeeder  
Straight oil fired unit  
Electroniccombustionsafetycontrol,  
dualoilvalvesoilignitiontransformer,  
two-stagefuelunit,directsparkignition  
of oil, oil nozzle assembly, control  
panel,allcontrolsinstalledandwired.  
Whenordering,pleasespecify:  
1. Boilersize  
2. Supplyandreturntempera-  
turesrequired  
5. Alarm bells or horns  
Steamboiler  
6. CSD-1, FM, IRI or other insur-  
anceapprovedcontrolsystems  
7. Indicatinglights, asdesired  
8. Lead-lag systems for two or  
moreboilerswithorwithout  
outdoorresetcontrol  
Steam pressure gauge, steam pres-  
sure control, combination low water  
cutoffandpumpcontrol,auxiliarylow  
water cutoff, high limit pressure con-  
trol, ASME-rated safety valve, water  
glass set.  
3. Boiler relief valve setting  
4. Type of fuel: natural, LP, or  
other gas and/or No. 2 oil  
5. If gas, type, BTU content,  
specificgravityandpressure  
available  
Combination gas-oil unit  
Electroniccombustionsafetycontrol,  
automaticoperatinggasvalve,safety  
gas valve, pilot solenoid valve, pilot  
ignition assembly, main manual gas  
shut-off valve, pilot cock, pilot and  
maingaspressureregulators,airsafety  
switch, manual fuel selector switch,  
dualoilvalves,gaspilotforbothfuels,  
two-stagefuelunit, nozzleassembly,  
controlpanel,allcontrolsinstalledand  
wired.  
9. Draftcontrolsystem  
Straight gas fired unit  
6. Electricpowervoltage, phase  
andfrequency  
OPTIONAL CONSTRUCTION:  
Electroniccombustionsafetycontrol,  
automaticoperatinggasvalve,safety  
gas valve, pilot solenoid valve, pilot  
ignition assembly, main manual gas  
shut-off valve, pilot cock, pilot and  
maingaspressureregulators,airsafety  
Steamboiler  
7. Optionalextraequipmentor  
construction  
OptionalconstructiontoASMEPower  
BoilerCoderequirementsforpressure  
exceeding150psitomaximumof300  
psidesignpressure.  
8. Specialapprovalsrequired  
(UL, CSD-1, FM, or IRI)  
9. Altitude  
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Bryan DR Series Steam & Hot Water Boilers  
FRONT VIEW  
REAR VIEW  
PLAN VIEW  
FT SIDE VIEW  
LE  
STEAM BOILER DIMENSIONS in inches (cm)  
A
B
C
D
E
F
G
H
I
J
K
L
Boiler  
Model  
Floor to  
Flow  
Width  
Outside  
Jacket  
Length Height  
of Over  
Gas Train  
Connection  
(Approx.)  
Supply Nozzle  
Min. Tube  
Removal  
Clearance  
24  
(60.96)  
Clearance  
for Servicing  
Burner  
Overall  
Length  
Return  
Conn.  
Flue  
Size  
Flue  
Location  
Number  
15 psi 150 psi  
Nozzle  
Jacket Jacket  
62 1/8  
74 5/8  
33 13/16  
32 3/8  
71 3/4  
1
3
NA**  
2
6
12 13/16  
30  
(76.20)  
DR250-S*  
DR350-S  
DR450-S  
DR650-S  
DR850-S  
(157.80) (189.54)  
(85.88)  
(82.23) (182.25)  
(2.54)  
(7.62)  
(5.08)  
(15.24)  
(32.54)  
62 1/8  
74 5/8  
33 13/16  
32 3/8  
71 3/4  
1
3
3
2
6
12 13/16  
24  
(60.96)  
30  
(76.20)  
(157.80) (189.54)  
(85.88)  
(82.23) (182.25)  
(2.54)  
(7.62)  
(7.62)  
(5.08)  
(15.24)  
(32.54)  
62 1/8  
74 5/8  
33 13/16  
32 3/8  
71 3/4  
1
3
3
2
6
12 13/16  
24  
(60.96)  
24  
(60.96)  
24  
(60.96)  
30  
(76.20)  
30  
(76.20)  
30  
(76.20)  
(157.80) (189.54)  
(85.88)  
(82.23) (182.25)  
(2.54)  
(7.62)  
(7.62)  
(5.08)  
(15.24)  
(32.54)  
73 1/2  
74 5/8  
33 13/16  
43 3/4  
71 3/4  
1
4
4
2
8
12 13/16  
(186.69) (189.54)  
(85.88)  
(111.13) (182.25)  
(2.54)  
(10.16)  
(10.16)  
(5.08)  
(20.32)  
(32.54)  
73 1/2  
74 5/8  
33 13/16  
43 3/4  
71 3/4  
1
4
4
2
8
12 13/16  
(186.69) (189.54)  
(85.88)  
(111.13) (182.25)  
(2.54)  
(10.16)  
(10.16)  
(5.08)  
(20.32)  
(32.54)  
NOTE: Dimensions subject to change without notice. Consult factory for certified dimensions.  
* Not intended for use as a principal heating source for the living space of an individual residence.  
** Not available in 15 psi construction.  
FRONT VIEW  
PLAN VIEW  
LEFT SIDE VIEW  
REAR VIEW  
WATER BOILER DIMENSIONS in inches (cm)  
A
B
C
D
E
F
G
H
I
J
K
L
Boiler  
Model  
Floor to  
Flow  
Width  
Outside  
Jacket  
Length  
of  
Height  
Over  
Min. Tube  
Removal  
Clearance for  
Servicing  
Burner  
Overall  
Length  
Gas Train  
Connection  
Supply  
Nozzle  
Return  
Nozzle  
Flue  
Size  
Flue  
Location  
Number  
Nozzle  
Jacket  
Jacket  
Clearance  
62 1/8  
67 7/8  
32 1/8  
32 3/8  
66 3/8  
1
2
2
6
1213/16  
24  
(60.96)  
30  
(76.20)  
DR350-W  
DR450-W  
DR650-W  
DR850-W  
(157.80)  
(172.40)  
(81.60)  
(82.23)  
(168.59)  
(2.54)  
(5.08)  
(5.08)  
(15.24)  
(32.54)  
62 1/8  
67 7/8  
32 1/8  
32 3/8  
66 3/8  
1
2
2
6
1213/16  
24  
(60.96)  
24  
(60.96)  
24  
(60.96)  
30  
(76.20)  
30  
(76.20)  
30  
(76.20)  
(157.80)  
(172.40)  
(81.60)  
(82.23)  
(168.59)  
(2.54)  
(5.08)  
(5.08)  
(15.24)  
(32.54)  
73 1/2  
67 7/8  
32 1/8  
43 3/4  
66 3/8  
1
2
2
8
1213/16  
(186.69)  
(172.40)  
(81.60)  
(111.13)  
(168.59)  
(2.54)  
(5.08)  
(5.08)  
(20.32)  
(32.54)  
73 1/2  
67 7/8  
32 1/8  
43 3/4  
66 3/8  
1
2
2
8
1213/16  
(186.69)  
(172.40)  
(81.60)  
(111.13)  
(168.59)  
(2.54)  
(5.08)  
(5.08)  
(20.32)  
(32.54)  
Specifications subject to change without notice. Consult factory to consult on other boiler options.  
Bryan Steam LLC Leaders Since 1916  
783 N. Chili Ave., Peru, Indiana 46970 U.S.A.  
Phone:765-473-6651  
Fax: 765-473-3074  
Form No. 3710  
Printed in USA  
64-6166  
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