Rheem Water Heater Gas Hot Water Supply Heaters User Guide

Gas Hot Water Supply Heaters  
Available in Indoor and Outdoor Models  
136,000 thru 1,826,000 BTU/Hr.  
Rheem-Ruud hot water supply heaters are designed to pro-  
vide hot water service to a variety of commercial applications  
when used in conjunction with an appropriately sized storage  
tank. These models are particularly suited for applications that  
require high inputs and large volumes of stored hot water.  
Construction Features:  
• Reliable heat exchanger  
Design – The all copper  
heat exchanger is a single  
bank, straight-through  
design with a floating  
return header immune to  
thermal shock.  
• Compact design –  
The low water heater  
mass design offers  
substantial savings in  
weight and cube over  
most cast iron, steel tube  
and storage-type water  
heaters making it ideal  
for rooftop installations  
and in tight quarters.  
• Energy saving pump  
control – The energy  
saving pump control is an  
electric device that allows  
the operator to set the  
desired time for the pump  
to run after the water  
• Minimal heat loss design  
– Spark-to-pilot (IID)  
system is standard on  
all models.  
heater shuts off. With the  
energy saving pump con-  
trol the water heater pump  
is programmed to contin-  
ue running for an optimum  
period of time in order to  
absorb the residual heat  
from the combustion  
• Glasslined cast iron  
headers –  
To handle aggressive  
water conditions. (Models  
GBBP/GBB136 feature  
bronze headers.)  
chamber and use it in the  
system.  
Indoor Models  
Certifications and Ratings:  
Indoor and Outdoor  
Models  
Efficiency – These models have been tested according to ANSI  
test procedures, and meet or exceed the 80% thermal efficiency  
requirement of current ASHRAE standards (Part of the Federally  
mandated Energy Policy Act (EPact)). Also exceeds energy  
efficiency codes of all states.  
Pump Mounted Models  
Available  
5 Year Limited Warranty  
Safety and Construction – These products are design certified  
by the CSA: a) As a Hot Water Supply Water Heater equipped  
with on/off controls for use in conjunction with a storage tank. b)  
For operation at 180°F. c) To meet all safety and construction  
requirements of ANSI Z21.10.3.c) For installation on combustible  
flooring when used with a combustible floor base, and, or e) for  
alcove installation. ASME construction is standard on all models.  
Certified for a 160 PSI Maximum Working Pressure.  
Continued next page.  
 
Example System  
INDOOR  
MODELS  
OUTDOOR  
MODELS  
•• OPTIONAL  
INTEGRAL PUMP  
ON MODELS 512 - 1826  
HOT WATER SUPPLY  
THERMOMETER  
RECIRCULATION  
COLD WATER  
RECIRCULATION  
PUMP  
(BY OTHERS)  
TANKSTAT  
LOCATION  
A
DRAIN  
OPENING  
KEY  
PRESSURE  
WATER HEATER  
SHOWN REPRE-  
SENTS VARIOUS  
MODELS.  
BECAUSE MOD-  
ELS WILL VARY IN  
DRAFT HOOD  
RELIEF VALVE  
UNION  
PUMP AND BALL VALVE LOCATION ON  
MODELS 136 THRU 399  
BALL VALVE  
GATE VALVE  
MINIMUM PIPE SIZE  
•• OPTIONAL ON MODELS  
Model  
Size  
Dimension  
512 THRU 1826 WITHOUT INTEGRAL PUMP  
A
1-1/4"  
1-1/2"  
2"  
DESIGN AND SIZE.  
SEE SPECIFIC  
WATER HEATER  
INFORMATION  
FOR DETAILS.  
CHECK VALVE  
PUMP  
136  
NOTES:  
1. PLUMB SWING CHECK VALVE IN GRAVITY CLOSED POSITION.  
2. MINIMUM PIPE EQUAL TO WATER HEATER INLET/OUTLET  
CONNECTION SIZE BETWEEN WATER HEATER AND TANK(S)  
3. PIPE ALL RELIEF VALVES TO DRAIN, OR AS LOCAL CODES  
REQUIRE  
186-399  
512-825  
926-1826  
2-1/2"  
Guaranteed 80% draw without temperature drop,  
using Rheem-Ruud water heaters, tanks, sizing tables and hook-up data.  
JACKET INSULATED STORAGE TANKS BY RHEEM-RUUD (All dimensions shown in inches)  
Connections  
Approx. Shipping  
Weight (Lbs.)  
Capacity  
Gallons  
Overall  
Height  
Connection  
Hot Outlet  
Circulating  
Line  
Relief Valve  
Connection  
Model  
Diameter  
24-7/16  
28-1/4  
32-1/4  
32  
Standard  
220  
ASME  
260  
ST80(A)  
ST120(A)  
ST175(A)  
ST200A  
ST260A  
ST320A  
ST430A  
ST500A  
ST750A  
ST950A  
80  
58-5/16  
59-1/4  
67-1/4  
77-1/4  
95-1/2  
84-1/2  
84-1/2  
94-1/2  
107-1/2  
131-1/2  
2
2
1
115  
175  
200  
257  
318  
432  
504  
752  
940  
2
2
1
260  
340  
2-1/2  
2-1/2  
1
600  
600  
2
2
2
2
2
2
2
2-1/2  
1
N/A  
500  
34  
3
3
3
3
3
3
1-1/4  
1-1/4  
1-1/4  
1-1/4  
1-1/4  
1-1/4  
N/A  
1108  
1290  
1626  
1765  
2330  
3010  
40  
N/A  
46  
N/A  
46  
N/A  
54  
N/A  
54  
N/A  
These storage tanks meet standby loss requirements of ASHRAE 90.1b-1992.  
(A) ASME code constructed tanks available as an option.  
Consult specification sheet for complete details.  
 
SPECIFICATIONS AND DIMENSIONS  
MODEL NUMBER  
With-  
STYLE  
MBTUH NATURAL GAS (X 1000)  
DIMENSIONS (INCHES)  
SHIPPING WEIGHT††  
Ref.  
to  
Dwg.  
Height Jacket  
Gas  
Flue  
Dia.  
K
out  
Pump  
With  
Pump  
In-  
Out-  
(indoor)  
(outdoor)  
Width Overall Height Conn.  
door door Input Output Input Output  
A
B
C
G
J
L
91⁄  
M
N
(Indoor)  
195  
191  
214  
234  
253  
510  
520  
630  
660  
(Outdoor)  
195  
200  
220  
240  
260  
535  
545  
685  
720  
790  
1
1
GBB136*  
GBBP136*  
136.0  
181.0  
264.0  
334.0  
399.0  
511.5  
627.0  
726.0  
825.0  
112.0  
148.0  
216.0  
274.0  
327.0  
419.4  
514.1  
595.4  
676.5  
136.0 112.0  
181.0 148.0  
264.0 216.0  
334.0 274.0  
399.0 327.0  
511.5 419.4  
627.0 514.1  
726.0 595.4  
825.0 676.5  
926.0 759.3  
241⁄  
181⁄  
223⁄  
253⁄  
291⁄  
323⁄  
371⁄  
415⁄  
453⁄  
523⁄  
523⁄  
591⁄  
591⁄  
635⁄  
635⁄  
685⁄  
685⁄  
747⁄  
747⁄  
811⁄  
811⁄  
893⁄  
893⁄  
8
45.0  
40.0  
40.0  
40.0  
40.0  
57.0  
57.0  
57.0  
57.0  
301⁄  
38  
38  
38  
38  
33  
33  
33  
33  
8
2
6
6
7
8
9
4
101⁄  
4
31⁄  
2
3
GBC186** GBCP186**  
GBC264** GBCP264**  
GBC331** GBCP331**  
GBC399** GBCP399**  
4
4
121⁄  
111⁄  
103⁄  
16  
3
8
4
8
2
3
4
4
4
3
4
4
121⁄  
2
GBC512  
GBC627  
GBC726  
GBC825  
GBC926  
GBC962  
GBCP512  
GBCP627  
GBCP726  
GBCP825  
GBCP926  
GBCP962  
4
1
1
1
1
1
1
1
1
1
1
11⁄  
11⁄  
11⁄  
11⁄  
11⁄  
11⁄  
11⁄  
11⁄  
10 253⁄  
12 291⁄  
12 341⁄  
14 381⁄  
8
2
2
3
8
4
4
2
8
14  
28  
961.7  
788.6  
8
683⁄  
4
331⁄  
2
18  
760  
GBC1083 GBCP1083  
GBC1125 GBCP1125  
GBC1178 GBCP1178  
GBC1223 GBCP1223  
GBC1287 GBCP1287  
GBC1337 GBCP1337  
GBC1413 GBCP1413  
GBC1467 GBCP1467  
GBC1570 GBCP1570  
GBC1630 GBCP1630  
GBC1758 GBCP1758  
GBC1826 GBCP1826  
1083.0 888.1  
4
741⁄  
850  
1124.7 922.2  
4
2
331⁄  
2
255⁄  
235⁄  
8
16  
32  
800  
1178.0 966.0  
8
910  
1222.5 1002.4  
8
741⁄  
761⁄  
2
331⁄  
2
8
16  
32  
860  
1287.0 1055.3  
8
4
975  
4
1336.6 1096.0  
8
2
331⁄  
2
4
235⁄  
235⁄  
8
18  
36  
930  
1413.0 1158.7  
8
4
1065  
1467.0 1202.9  
8
761⁄  
791⁄  
2
331⁄  
2
4
8
18  
36  
1000  
1570.0 1287.4  
8
4
1120  
1630.0 1336.5  
8
2
361⁄  
2
4
235⁄  
235⁄  
8
18  
36  
1040  
1758.0 1441.6  
8
811⁄  
4
1150  
1825.6 1496.9  
8
2
361⁄  
2
4
8
20  
40  
1090  
* Equipped with bronze headers, all other models have glasslined cast iron headers. GBC – cast iron headers. GBB – bronze headers.  
†† Subtract 55 lbs. when ordering GBC models.  
** Low NOx models add “N” after model number. Outdoor models add “-O” after model number.  
Indicate Natural or LP when ordering.  
MBTUH PROPANE GAS†  
MIN. CLEARANCES TO COMBUSTIBLE SURF.  
ELECTRICAL RATINGS  
With Pump  
Top  
Side Indoor Outdoor  
Model  
Size  
Model  
Size  
Left  
Side  
Right  
Model  
Size  
Multiplier  
Same as natural gas  
.94  
Rear  
12"  
136-399  
512-825  
926-1826  
136  
12"  
12"  
18"  
24"  
6"  
12"  
6"  
42"  
39"  
36"  
24"  
Unobstr.  
Unobstr.  
Unobstr.  
Unobstr.  
136-399  
331-399  
512-1826  
3.7 amps @ 120V (1/8 hp pump)  
3.6 amps @ 120V (1/6 hp pump)  
7.2 amps @ 120V (1/2 hp pump)  
186-399  
512-825  
926-1826  
12"  
.92 Indoor  
12"  
.955 Outdoor (input)  
.92 Outdoor (output)  
24"  
24"  
For servicing provide 24" minimum unobstructed clearance  
in front of unit.  
† Multiplier x Nat. MBTUH = Pro. MBTUH  
141/2  
A
K
71/4  
K
L
101/2  
PUMP  
(OPTIONAL)  
INDOOR  
OUTDOOR  
PUMP COVER  
(OPTIONAL  
OUTDOOR  
UP FRONT  
CONTROLS  
11/4  
J
INLET  
MODELS ONLY)  
OUTLET  
68-3/4  
B
INDOOR  
DRAFT  
ELEC.  
CONN.  
381/2  
(B)  
OUTLET  
9-7/8  
G
GAS  
STACKLESS  
(C)  
OUTDOOR TOP  
INLET  
C
26-1/2  
241/4  
10-1/4  
1-1/2 NPT  
WATER  
CONNECTION  
REAR VIEW  
FRONT VIEW  
153/8  
2
3-7/8  
8-1/2  
A
3/4 NPT  
13-1/4  
GAS  
CONNECTION  
COMBUSTIBLE  
FLOOR SHIELD  
21-1/4  
ELECTRIC  
CONNECTION  
GAS  
4 7/8  
26-1/2  
31/4  
2
CONNECTION  
OPTIONAL  
ON INDOOR  
4 3/4  
DRAWING 1  
DRAWING 2  
291/2  
K
A
18  
321/2  
A
18  
A
2
A
2
K
111/4  
143/4  
L
18  
INDOOR OUTDOOR  
2
J
INDOOR  
OUTDOOR  
21/2  
B
B
441/8  
G
OUTLET INLET  
GAS  
463/4  
C
141/2  
OUTLET INLET  
141/2  
113/4  
281/4  
G
GAS  
C
ELEC  
CONN  
ELEC  
CONN  
273/4  
17  
14  
COMBUSTIBLE  
FLOOR SHIELD  
6
21/2  
51/8  
11/8  
COMBUSTIBLE  
FLOOR SHIELD  
21/4  
5/8  
21/4  
111/8  
5
1
11 /8  
6
5
OPTIONAL  
OPTIONAL  
ON INDOOR  
ON INDOOR  
DRAWING 3  
DRAWING 4  
 
RECOVERY CAPACITIES  
MODEL NUMBER  
STYLE  
Indoor Outdoor  
TEMPERATURE RISE – DEGREES F – GALLONS PER HOUR  
40° 50° 60° 70° 80° 90° 100° 110° 120° 130° 140°  
INPUT BTU/Hr.  
NATURAL  
wo/Pump w/Pump  
GBB136  
GBC186  
GBC264  
GBC331  
GBC399  
GBC512  
GBC627  
GBC726  
GBC825  
GBC926  
GBC962  
GBBP136  
GBCP186  
GBCP264  
GBCP331  
GBCP399  
GBCP512  
GBCP627  
GBCP726  
GBCP825  
GBCP926  
GBCP962  
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
136,000  
181,000  
330 264 220 188 165  
440 352 293 251 220  
640 512 427 366 320  
811 649 541 463 406  
967 774 645 553 484  
1240 992 827 709 620  
1520 1216 1013 869 760  
1760 1408 1173 1006 880  
147 132  
195 176  
284 256  
360 324  
430 387  
551 496  
676 608  
782 704  
120  
160  
233  
295  
352  
451  
553  
640  
727  
816  
848  
110  
147  
213  
270  
322  
413  
507  
587  
667  
748  
777  
875  
909  
101  
94  
135 126  
197 183  
250 232  
298 276  
382 354  
468 434  
542 503  
615 571  
691 641  
717 665  
808 750  
839 779  
879 816  
912 847  
264,000  
334,000  
399,000  
511,500  
627,000  
726,000  
825,000  
2000 1600 1333 1143 1000 889 800  
2245 1796 1497 1283 1122 998 898  
2331 1865 1554 1332 1166 1036 933  
926,000  
*
*
*
*
*
*
*
961,700  
GBC1083 GBCP1083  
GBC1125 GBCP1125  
GBC1178 GBCP1178  
GBC1223 GBCP1223  
GBC1287 GBCP1287  
GBC1337 GBCP1337  
GBC1413 GBCP1413  
GBC1467 GBCP1467  
GBC1570 GBCP1570  
GBC1630 GBCP1630  
GBC1758 GBCP1758  
GBC1826 GBCP1826  
*
*
*
*
*
*
1,083,000  
1,124,700  
1,178,000  
1,222,500  
1,287,000  
1,336,600  
1,413,000  
1,467,000  
1,570,000  
1,630,000  
1,758,000  
1,825,600  
2625 2100 1750 1500 1313 1167 1050 955  
2727 2181 1818 1558 1363 1212 1091 991  
2856 2285 1904 1632 1428 1269 1142 1038 952  
2964 2371 1976 1694 1482 1317 1185 1078 988  
3120 2496 2080 1783 1560 1387 1248 1135 1040 960 891  
3240 2592 2160 1852 1620 1440 1296 1178 1080 997 926  
3425 2740 2284 1957 1713 1522 1370 1246 1142 1054 979  
3556 2845 2371 2032 1778 1581 1423 1293 1185 1094 1016  
3806 3045 2537 2175 1903 1692 1522 1384 1269 1171 1087  
3952 3161 2634 2258 1976 1756 1581 1437 1317 1216 1129  
4262 3409 2841 2435 2131 1894 1705 1550 1421 1311 1218  
4426 3541 2950 2529 2213 1967 1770 1609 1475 1362 1264  
GENERAL FLOW AND PIPING SPECIFICATIONS  
Water Hardness  
MEDIUM  
MODELS  
SOFT  
HARD  
0-4 Grains Per Gallon  
5-15 Grains Per Gallon  
16 & Over Grains Per Gallon  
Indoor  
136  
186  
Outdoor  
136  
GPM  
10  
20  
20  
20  
22  
42  
41  
41  
45  
53  
61  
67  
73  
80  
89  
90  
MPS SHL  
1-1/4 5.09  
GPM  
13  
26  
26  
26  
26  
52  
54  
60  
68  
79  
90  
90  
90  
90  
90  
90  
MPS SHL  
GPM  
22  
40  
42  
42  
43  
84  
90  
90  
90  
90  
90  
90  
90  
90  
90  
90  
MPS SHL  
T  
P  
T  
P  
T  
P  
22  
3.4  
17  
5.5  
1-1/4  
1-1/2  
1-1/2  
1-1/2  
1-1/2  
2
8.2  
7.5  
7.6  
7.7  
7.8  
7
10  
14.7 1-1/4  
22  
17  
186  
15  
21  
27  
30  
20  
25  
29  
30  
30  
30  
30  
30  
30  
30  
32  
1.82 1-1/2 4.48  
1.85 1-1/2 4.51  
11  
16  
20  
25  
16  
19  
20  
20  
20  
20  
22  
24  
26  
29  
32  
3
7
6.8  
8.3  
8.5  
9
1-1/2  
264  
264  
3.1  
3.2  
3.3  
2.9  
3.1  
4
10  
13  
15  
10  
11  
13  
15  
17  
20  
22  
24  
26  
29  
32  
1-1/2 18.8  
1-1/2 19  
1-1/2 19.5  
331  
331  
1.9  
2.1  
1.8  
1.9  
2
1-1/2 4.56  
1-1/2 5.08  
399  
399  
512  
512  
2
2
4.4  
4.5  
4.6  
5.7  
4.9  
7.5  
8.8  
11  
6.8  
8.5  
9
2
2
2
2
16.6  
20.4  
20.8  
21.1  
627  
627  
2
7.2  
9.3  
11.7  
726  
726  
2
2
825  
825  
2.5  
3.5  
5.5  
6.5  
8.4  
2
5.2  
7.5  
2
9.3  
962  
926  
2-1/2  
2-1/2  
2-1/2  
2-1/2  
2-1/2 10.5  
16  
2-1/2 16.2  
13.3 2-1/2 17.5  
10.1 2-1/2 14.3  
11.8 2-1/2 16  
12 2-1/2 16.2  
13.3 2-1/2 17.5  
1125  
1223  
1337  
1467  
1630  
1826  
1083  
1178  
1287  
1413  
1570  
1758  
11.8 2-1/2  
12  
10.8 2-1/2 14.1  
13.7 2-1/2 17.6  
15.5 2-1/2 19.7  
13.8 2-1/2  
14.8 2-1/2  
18  
19  
13.8 2-1/2  
14.8 2-1/2  
18  
19  
15.5 2-1/2 19.7  
15.5 2-1/2 19.7  
NOTE: Additional pipe fittings will increase the system head loss. Select a pump based on the water hardness, flow and system head loss. If water heater is  
more than two stories above the tank, consult the pump manufacturer.  
T
GPM  
Temperature Rise, Degree F @ GPM Flow  
Gallons per Minute Flow  
Pressure Drop, Ft. thru Heat Exchanger  
Minimum Pipe Size, NPT  
Sizing based on water heater and tank being placed 5 feet apart. The  
equivalent length of pipe valves and fittings in the system is as follows.  
1-1/4" NPT = 65 Ft (136)  
P
MPS  
SHL  
1-1/2" NPT = 70 Ft (186-399)  
2"  
NPT = 75 Ft (512-825)  
System Head Loss  
2-1/2" NPT = 80 Ft (926-1826)  
 
Gas Hot Water Supply Heaters  
Standard Equipment:  
Heat Exchanger  
Gas Control Train  
• Finned Copper Tubes  
• Manual Gas Shut-Off Cock  
• Main Gas Pressure Regulator  
• Safety Shut-Off Valve, Redundant  
• Control Valve  
• ASME Steel Tubesheet  
• Silicon O-Rings  
• 125 PSIG ASME Pressure Relief Valve  
• Glasslined Cast Iron Headers  
Construction  
• Vent Terminal  
• Front Controls Enclosed  
• Stainless Steel Burners  
• Polytuf Powder Coat Finish  
Controls  
• Energy Saving Pump Control  
• Flow Switch  
• Spark-to-Pilot Ignition System  
• High Limit Control  
When ordering specify:  
• On/Off Switch  
I wo/Pump (GBC) or I w/Pump (GBCP)  
• Flue Gas Spillage Sensor  
• Flame Roll-Out Sensor  
I Natural Gas  
I Indoor  
or I L.P.  
or I Outdoor  
Recommended Specifications:  
Hot Water Supply Heater(s) shall be model ________________, manufactured by RHEEM-RUUD,  
having gas input of __________ Btu/hr. and recovery rate of _____________ GPH at a 100°F tempera-  
ture rise when tested and certified at ____________ thermal efficiency. Water heaters(s) shall have the  
CSA seal of certification and supplied with a factory installed 125 PSIG ASME pressure relief valve.  
Water heater(s) shall meet or exceed the thermal efficiency requirements of ASHRAE. Water heater(s)  
shall be ASME inspected and stamped for 160 PSI working pressure complete with manufacturer’s data  
report. Water tube heat exchanger shall be constructed of straight integral copper fin tubes with fins  
spaced at seven fins per inch. Tube sheets shall be ASME fire box steel. Headers shall be of glasslined  
cast iron and joined to the copper tubes and tube sheets by means of silicone “O” rings to form a posi-  
tive seal between the copper tubes and the headers to 1200 PSI hydrostatic pressure. Headers shall be  
secured to the tube sheets by properly spaced bolts and flange nuts. Heat exchanger shall be readily  
cleanable from either the right or left sides (or rear) of the water heater by removing header(s), and on  
the right side, cleanable without removing external piping. Heat exchanger to be explosion proof on the  
water side. Waterways to be 100% copper and glasslined cast iron to prevent galvanic action within the  
water heater by positively sealing off water contact between ferrous and non-ferrous metals. Pump, flow  
switch, and energy saving pump control are to be factory supplied and units over 400,000 Btu/Hr. must  
have electronic intermittent pilot ignition.  
Water heater to be equipped with remote bulb electric high limit control adjustable to 200°F. Main  
electric gas valve to be 24 volt with 110/24 volt transformer. Gas pressure regulator to be factory set  
at 4" W.C. Flame supervision shall be either 60 second thermopilot or 1-4 second electronic shut down.  
Burners to be raised port and die formed from stainless steel alloy, mounted on a removable drawer,  
capable of quiet ignition and extinction, and equipped with fixed primary air ports.  
Models above 330,000 Btu/Hr. shall be CSA design certified for a minimum efficiency of 82% on indoor  
and outdoor models.  
Limited Warranty  
All GB models feature a five year limited warranty on the  
copper heat exchanger and glasslined cast iron header.  
Please refer to Commercial Warranty Information brochure  
for complete limited warranty information.  
C O M M E R C I A L  
W A T E R H E A T E R S  
In keeping with its policy of continuous progress and product improvement, Rheem-Ruud reserves the right to make changes without notice.  
Rheem Water Heating • 101 Bell Road, Montgomery, Alabama 36117-4305 • www.rheem.com  
PRINTED IN U.S.A  
10/06 WP  
FORM NO. RR102C-6 Rev. 11  
 

Q See Security Camera QD6001D User Guide
Quatech Stereo Receiver 24GHz User Guide
Rangemaster Cooktop U109948 04 User Guide
RCA MP3 Player H115 User Guide
ritetemp Thermostat GPMG8010 User Guide
Rotel Stereo Amplifier RA820BX3 User Guide
Rowenta Iron DG 560 User Guide
Samsung CD Player EV 1 User Guide
Samsung DVD Recorder SE 208AB TSBS User Guide
Samsung Tablet SM T210RGNYXAR User Guide