Page 1
Tankless Water Heater Models:
RTG-64DVL indoor direct vent and RTG-64XL outdoor
• Natural and LP models – 11,000 - 150,000 BTU max.
• 6.4 gal./min at 35° F rise max., 5.6 gal./min. at 45° F rise
RTG-84DVL indoor direct vent and RTG-84XL outdoor
• Natural and LP models – 11,000 - 180,000 BTU max.
• 8.4 gal./min at 35° F rise max., 6.7 gal./min. at 45° F rise
RTGH-84DVL indoor direct vent and RTGH-84XL outdoor
• Natural and LP models – 11,000 - 157,000 BTU max.
• 8.4 gal./min at 35° F rise max., 6.6 gal./min. at 45° F rise
RTG-95DVL indoor direct vent and RTG-95XL outdoor
• Natural and LP models – 11,000 - 199,900 BTU max.
• 9.5 gal./min at 35° F rise max., 7.4 gal./min. at 45° F rise
RTGH-95DVL indoor direct vent and RTGH-95XL outdoor
• Natural and LP models – 11,000 - 199,900 BTU max.
• 9.5 gal./min at 35° F rise max., 8.4 gal./min. at 45° F rise
FORM NO. H11-547 REV. 3
Air & Water
Integrated Solutions
RHWB Series
Hydronic Air Handler Powered by
Tankless Technology
RHWB- Series
• Nominal Heating Capacities:
32-90 kBTU [9.38-26.39 kW]
✝A.F.U.E. (Annual Fuel Utilization Efficiency) calculated in accordance with
Department of Energy test procedures.
Page 2
2
Air & Water
Table of Contents
RHWB Series
TABLE OF CONTENTS
System Components ......................................................................................3
Model Features & Model Number Identification..................................................4
General Data ..............................................................................................5-6
Dimensional Data............................................................................................7
Airflow Performance Data ............................................................................8-9
Water Heater Performance Data ....................................................................10
Hydronic Air Handler Performance Data ................................................................11
Tankless Water Heater-Mid Efficiency Tankless Series ....................................12-13
Tankless Water Heater-Condensing Tankless Series ........................................14-15
Accessories ............................................................................................................16
Typical Piping..........................................................................................................17
Limited Warranty ....................................................................................................18
Page 3
Air & Water
System Components
RHWB Series
3
1
2
3
System Components
Tankless Water Heater
The Rheem tankless water heater serves two
purposes in the hydronic system: it provides
continuous hot water for use throughout the
home. When a call for heat is made, the tankless
water heater also acts as the heat-source for air
handler, providing both hot water and heating for
the home simultaneously.
Hydronic Air Handler
The hydronic air handler features a hydronic
heating coil in place of either electric heating
elements or gas-fired heat exchangers. When
in heating mode, the hydro pump circulates hot
water between the tankless water heater and the
hydronic coil.
Cooling Coil
In cooling mode, the cooling coil operates the
same as any other Rheem heating and cooling
system.
1
2
3
A
B
C
Home Heating & Water Heating Powered by Tankless Technology
System Components
Hydronic Air Handler – Inside View
HYDRONIC COIL
INTEGRATED
CONTROL
HYDRO PUMP
Page 4
4
Air & Water
Model Features & Model Number Identification
RHWB Series
Features of the Hydronic Air Handler
• Low profile 34-inch design is lighter, easier to handle
and leaves room for optional accessories
• Left or right side electric connections
• Integrated control board features diagnostics, manages
all operational functions and provides hookups for
humidifier and electronic air cleaner
• An insulated blower compartment makes it one of the
quietest hydronic air handlers on the market today
• Pre-paint galvanized steel cabinet
• Molded permanent filter(s)
• Transformer and control fuse protection
• Solid bottom is standard
• A variety of cooling coils and plenums designed to use
with the Hydronic Air Handler are available as optional
accessories for air conditioning models
• Stainless steel water pump
Model Features
Features of the Tankless Water Heater
• Industry best! Minimum flow rate of .26 GPM,
minimum activation flow rate of .40 GPM
• ENERGY STAR
®
rated models available
• Next generation burner technology
• UMC-117 remote control and 10 ft. of thermostat wire
is included
• EZ-Link™ cable available for high demand applications
to connect two tankless units to operate as one
• High-altitude capability – up to 9,840 ft. elevation
above sea level (no chip required)
• Intelligent electronic controls designed to increase
energy efficiency and safety
• Self Diagnostic System
R H W B -06W M P 36 B
Brand Application Type
Design
Series
Heating Output Designation
Blower
Size
Variations
Heat/Cool
Designation
Revision
Inlet Water
Temp = 150F [66°C]
Output
BTU/HR [kW]
R = Rheem H = Air Handler W = Water
B =
2nd Series
04W 40,000 [11.7 kW]
M = 11x7
[279 x 178 mm]
R = 11x10
[279 x 254 mm]
P = PSC
X = Eco
Tech™
(ECM)
36 = 1100-1300 CFM
[519-613.5 L/s]
48 = 1500-1700 CFM
[707.9-802.3 L/s]
60 = 1900-2100 CFM
[896
.7-991.1 L/s]
B = Rev 1
06W 60,000 [17.6 kW]
08W 80,000 [23.5 kW]
10W 90,000 [28.3 kW]
[ ] Designates Metric Conversions
Hydronic Air Handler Model Identification
Page 5
MODEL NUMBERS RHWB-04WMP36B RHWB-06WMP48B RHWB-08WRP60B RHWB-10WRP60B
Nominal Heating Capacity BTU/hr [W] 40000 60000 80000 100000
Air Side Temperature Rise* °F [°C] 45-75 [25-41.7] 40-70 [22.2-38.9] 35-65 [19.4-36.1] 35-65 [19.4-36.1]
Heating CFM [L/s] @ .8 WC [.19 kPa] 590 [278] 1000 [471] 1453 [685] 1818 [858]
Cooling CFM [L/s] @ .5 WC [.12 kPa] 1235 [582] 1622 [765] 1871 [883] 1973 [931]
Power Supply (V - HZ - PH) 115 - 60 -1
Minimum Circuit Ampacity - Amps 10 11.4 14 14
Max Rating of Over Current Protective
Device - Amps
18 20.5 25.2 25.2
Maximum Fuse or Circuit Breaker Size 15 20 25 25
Motor HP [W] 1/2 [373] 3/4 [559] 3/4 [559] 3/4 [559]
Blower (D x W) in [mm] 11 x 7 [279 x 178] 11 x 7 [279 x 178] 11 x 10 [279 x 254] 11 x 10 [279 x 254]
Blower Motor Type PSC
Pump Type Wet Rotor
Pump Power Supply (V - HZ - PH) 115 - 60 -1
Pump Motor RLA/LRA - Amps 1.8
Pump HP [W] 1/8
Pump Maximum Working Pressure psi [kPa] 125 [861]
Min/Max Working Temperature °F [°C] 160 [71]
Water Connection Type Copper Studs
Inlet Water Connection Diameter in [mm] 3/4 [19]
Out Water Connection Diameter in [mm] 3/4 [19]
Return Air Filter Size in [mm] 12 x 16 [305 x 406] 16 x 24 [406 x 609]
Standard High Velocity Filter Size
(L X W X H) in [mm]
15 3/4 x 25 x 1
[400 x 635 x 25]
22 3/4 x 25 x 1
[578 x 635 x 25]
Shipping Weight LBS [kg] 107 [48.5] 118 [53.5] 137 [62.1] 145 [65.7]
5
Air & Water
General Data
RHWB Series
General Data—PSC Models
U.S. and Canadian Models
IMPORTANT
: BEFORE PURCHASING THIS APPLIANCE, READ IMPORTANT ENERGY COST AND EFFICIENCY
INFORMATION AVAILABLE FROM YOUR RETAILER.
[ ] Designates Metric Conversions
Page 6
6
Air & Water
General Data
RHWB Series
MODEL NUMBERS RHWB-04WMX36B RHWB-06WMX48B RHWB-08WRX60B RHWB-10WRX60B
Nominal Heating Capacity BTU/hr [W] 40000 60000 80000 100000
Air Side Temperature Rise* °F [°C] 45-75 [25-41.7] 40-70 [22.2-38.9] 35-65 [19.4-36.1] 35-65 [19.4-36.1]
Heating CFM [L/s] @ .8 WC [.19 kPa] 578 [ 272] 1030 [485] 1502 [707] 1847 [870]
Cooling CFM [L/s] @ .5 WC [.12 kPa] 1180 [556] 1300 [612] 1645 [775] 1707 [804]
Power Supply (V - HZ - PH) 115 - 60 -1
Minimum Circuit Ampacity - Amps 10 12.9 12.9 12.9
Max Rating of Over Current Protective
Device - Amps
18 23.2 23.2 23.2
Maximum Fuse or Circuit Breaker Size 15 20 20 20
Motor HP [W] 1/2 [373] 3/4 [559] 3/4 [559] 3/4 [559]
Blower (D x W) in [mm] 11 x 7 [279 x 178] 11 x 7 [279 x 178] 11 x 10 [279 x 254] 11 x 10 [279 x 254]
Blower Motor Type EcoTech / ECM Type
Pump Type Wet Rotor
Pump Power Supply (V - HZ - PH) 115 - 60 -1
Pump Motor RLA/LRA - Amps 1.8
Pump HP [W] 1/8
Pump Maximum Working Pressure psi [kPa] 125 [861]
Min/Max Working Temperature °F [°C] 160 [71]
Water Connection Type Copper Studs
Inlet Water Connection Diameter in [mm] 3/4 [19]
Out Water Connection Diameter in [mm] 3/4 [19]
Return Air Filter Size in [mm] 12 x 16 [305 x 406] 16 x 24 [406 x 609]
Standard High Velocity Filter Size
(L X W X H) in [mm]
15 3/4 x 25 x 1
[400 x 635 x 25]
22 3/4 x 25 x 1
[578 x 635 x 25]
Shipping Weight LBS [kg] 116 [52.6] 126 [57.2] 146 [66.2] 153 [69.3]
General Data—Eco Tech™(ECM) Models
U.S. and Canadian Models
IMPORTANT
: BEFORE PURCHASING THIS APPLIANCE, READ IMPORTANT ENERGY COST AND EFFICIENCY
INFORMATION AVAILABLE FROM YOUR RETAILER.
[ ] Designates Metric Conversions
Page 7
7
Air & Water
Dimensional Data
RHWB Series
Hydronic Air Handler Dimensions and Specifications
LEFT
SIDE
MINIMUM CLEARANCE
MODEL
RHWB
ABCDEF
RIGHT
SIDE
BACK TOP FRONT
04WM 17
1
/2 [445] 1611/32 [415] 155/8 [397]
3
/4 [19] ID 15 [422] 1325/32 [350] 0 0 0 1 [25] 0*
06WM 17
1
/2 [445] 1611/32 [415] 155/8 [397]
3
/4 [19] ID 15 [422] 1325/32 [350] 0 0 0 1 [25] 0*
08WR 24
1
/2 [622] 2311/32 [593] 225/8 [575]
3
/4 [19] ID 22 [600] 2025/32 [528] 0 0 0 1 [25] 0*
10WR 24
1
/2 [622] 2311/32 [593] 225/8 [575]
3
/4 [19] ID 22 [600] 2025/32 [528] 0 0 0 1 [25] 0*
*A service clearance of at least 24 inches [634mm] is recommended in front of all air handlers.
[ ] Designates Metric Conversions
Dimensions and Clearance to Combustible Material (inches) [mm]
Page 8
8
Air & Water
Airflow Performance
RHWB Series
RHWB04WMP36B
11 x 7
[279 x 178] /
1/2 [373]
Low 794 [375] 775 [366] 749 [353] 719 [339] 686 [324] 655 [309] 621 [293] 590 [278] 534 [252] 473 [223]
M-Lo 1036 [489] 1024 [483] 1002 [473] 977 [461] 922 [435] 896 [423] 865 [408] 826 [390] 761 [359] 689 [325]
M-Hi 1202 [567] 1176 [555] 1160 [547] 1100 [519] 1073 [506] 1047 [494] 1008 [476] 969 [457] 926 [437] 890 [420]
High 1356 [640] 1336 [631] 1301 [614] 1266 [597] 1235 [583] 1202 [567] 1156 [546] 1093 [516] 1030 [486] 959 [453]
RHWB06WMP48B
11 x 7
[279 x 178] /
3/4 [559]
Low 921 [435] 915 [432] 886 [418] 876 [413] 855 [404] 841 [397] 817 [386] 780 [368] 734 [346] 690 [326]
M-Lo 1189 [561] 1180 [557] 1179 [556] 1137 [537] 1131 [534] 1102 [520] 1072 [506] 1030 [486] 985 [465] 915 [432]
M-Hi 1335 [630] 1315 [621] 1306 [616] 1307 [617] 1277 [603] 1246 [588] 1210 [571] 1161 [548] 1090 [514] 1019 [481]
High 1841 [869] 1795 [847] 1747 [824] 1681 [793] 1622 [765] 1560 [736] 1500 [708] 1420 [670] 1358 [641] 1288 [608]
RHWB08WRP60B
11 x 10
[279 x 254] /
3/4 [559]
Low 1319 [623] 1307 [617] 1300 [614] 1240 [585] 1236 [583] 1210 [571] 1177 [555] 1149 [542] 1100 [519] 1032 [487]
M-Lo 1484 [700] 1480 [698] 1471 [694] 1463 [690] 1418 [669] 1385 [654] 1359 [641] 1314 [620] 1246 [588] 1166 [550]
M-Hi 1687 [796] 1676 [791] 1671 [789] 1611 [760] 1586 [749] 1553 [733] 1513 [714] 1453 [686] 1389 [656] 1284 [606]
High 1971 [930] 1974 [932] 1948 [919] 1929 [910] 1871 [883] 1806 [852] 1751 [826] 1699 [802] 1610 [760] 1511 [713]
RHWB10WRP60B
11 x 10
[279 x 254] /
3/4 [559]
Low 1299 [613] 1294 [611] 1308 [617] 1279 [604] 1257 [593] 1231 [581] 1205 [569] 1165 [550] 1122 [530] 1053 [497]
M-Lo 1515 [715] 1519 [717] 1499 [707] 1487 [702] 1415 [668] 1418 [669] 1394 [658] 1348 [636] 1296 [612] 1221 [576]
M-Hi 1684 [795] 1695 [800] 1693 [799] 1663 [785] 1620 [765] 1586 [749] 1569 [740] 1514 [715] 1451 [685] 1365 [644]
High 1954 [922] 1971 [930] 1974 [932] 1982 [935] 1973 [931] 1944 [917] 1917 [905] 1818 [858] 1775 [838] 1700 [802]
CFM [L/s] Air Delivery External Static Pressure Inches Water Column [kPa]
Blower / Motor HP
Inches [mm]
Model
0.8 [.19]0.1 [.02] 0.2 [.05] 0.3 [.07] 0.4 [.10] 0.5 [.12] 0.6 [.15] 0.7 [.17]Speed 0.9 [.22] 1.0 [.24]
Hydronic Air Handler Airflow Performance—PSC Models
Note: Units tested without filters in place.
[ ] Designates Metric Conversions
Page 9
9
Air & Water
Airflow Performance
RHWB Series
Model
Blower Size
in [mm]
Motor HP
[Watt]
Blower
Speed
CFM [L/s] Air Delivery External Static Pressure Inches Water Column [kPa]
0.1 [.02] 0.2 [.05] 0.3 [.07] 0.4 [.10] 0.5 [.12] 0.6 [.15] 0.7 [.17] 0.8 [.19] 0.9 [.22 1.0 [.24]
RHWB-
04WMX36B
11x7
[279 x 178]
1/2 [343]
Low 960 [453] 891 [420] 836 [394] 781 [368] 731 [344] 682 [322] 630 [297] 578 [273] 540 [255] 460 [217]
Med-low 1178 [555] 1118 [527] 1068 [504] 1017 [479] 973 [459] 922 [435] 877 [414] 833 [393] 781 [369] 730 [345]
Med-high 1323 [624] 1269 [598] 1222 [576] 1180 [556] 1130 [533] 1089 [514] 1051 [496] 1006 [475] 958 [452] 914 [431]
High 1481 [698] 1431 [675] 1381 [651] 1333 [629] 1291 [609] 1250 [590] 1209 [571] 1168 [551] 1122 [530] 1085 [512]
RHWB-
06WMX48B
11x7
[279 x 178]
3/4 [559]
Low 1092 [515] 1037 [489] 992 [468] 938 [442] 896 [422] 849 [401] 790 [373] 739 [349] 689 [325] 633 [299]
Med-low 1360 [641] 1308 [617] 1264 [596] 1222 [576] 1174 [554] 1138 [537] 1095 [517] 1027 [485] 988 [466] 945 [446]
Med-high 1462 [689] 1424 [672] 1378 [650] 1340 [632] 1300 [614] 1263 [596] 1223 [577] 1185 [559] 1147 [541] 1111 [524]
High 1779 [839] 1743 [822] 1716 [809] 1674 [790] 1698 [801] 1662 [784] 1624 [776] 1588 [749] 1525 [720] 1427 [673]
RHWB-
08WRX60B
11x10
[279 x 254]
3/4 [559]
Low 1533 [723] 1475 [696] 1412 [666] 1357 [640] 1287 [607] 1239 [585] 1185 [559] 1129 [533] 1069 [505] 1002 [473]
Med-low 1658 [782] 1604 [757] 1551 [731] 1500 [707] 1438 [679] 1392 [657] 1336 [631] 1277 [603] 1231 [581] 1174 [554]
Med-high 1842 [869] 1782 [841] 1747 [824] 1701 [802] 1645 [776] 1601 [756] 1547 [730] 1502 [709] 1456 [687] 1401 [661]
High 2131[1005] 2074 [978] 2030 [958] 1969 [929] 1929 [910] 1885 [890] 1833 [865] 1786 [843] 1744 [823] 1688 [797]
RHWB-
10WRX60B
11x10
[279 x 254]
3/4 [559]
Low 1598 [754] 1533 [723] 1471 [694] 1401 [661] 1344 [634] 1286 [607] 1221 [576] 1162 [548] 1099 [519] 1020 [481]
Med-low 1731 [816] 1674 [790] 1605 [757] 1546 [729] 1488 [702] 1435 [607] 1377 [650] 1320 [623] 1264 [597] 1206 [569]
Med-high 1943 [916] 1877 [885] 1822 [859] 1762 [831] 1707 [806] 1651 [779] 1609 [759] 1552 [732] 1498 [707] 1446 [682]
High 2197 [1036] 2151 [1015] 2095 [988] 2047 [966] 1995 [942] 1949 [920] 1896 [895] 1847 [872] 1800 [850] 1745 [824]
Hydronic Air Handler Airflow Performance—Eco Tech
™
(ECM) Models
Blower performance measured without filter in place.
[ ] Designates Metric Conversions
Page 10
10
Air & Water
Water Heater Performance Data
RHWB Series
Hydronic Air Handler with Tankless Water Heater Performance
RTG-95
RHWB-06WMP48B
RHWB-06WMX48B
RTG-53
High
0.5
[124.5]
1622 [765]
RTG-74
RHWB-08WRP60B
RHWB-08WRX60B
RHWB-04WMP36B
RHWB-04WMX36B
RTG-64
High
0.5
[124.5]
1235 [583]
RTG-53
Med-High
0.5
[124.5]
RTG-84
1586 [749]
RTGH-84
RTG-64
RTG-64 42000 [12.31]
35000 [10.26]
38600 [11.31]
37700 [11.05]
40900 [11.99]
32600 [9.55]
25600 [7.50]
25700 [7.53]
26400 [7.74]
Capacity (BTU/HR) [kW]
50900 [14.92]
41300 [12.10]
44300 [12.98]
46200 [13.54]
47100 [13.80]
39500 [11.58]
31500 [9.23]
30900 [9.06]
31800 [9.32]
53400 [15.65]
50600 [14.83]
49000 [14.36]
54000 [15.83]
51000 [14.95]
47500 [13.92]
34600 [10.14]
33900 [9.94]
35500 [10.40]
N/A
N/A
55300 [16.21]
62700 [18.38]
N/A
N/A
40000 [11.72]
39600 [11.61]
N/A
N/A
N/A
62000 [18.17]
71300 [20.90]
N/A
N/A
45400 [13.31]
44800 [13.13]
N/A
Air Handler Model
Tankless
Model
Blower Speed
ESP
(In. W.C.)
Heating Air Delivery
(CFM) [L/s]
120 [49] 130 [54] 140 [60] 150* [65] 160 [71]
RTG-74 40300 [11.81] 49700 [14.57] 58800 [17.23] 71600 [20.98] 81600 [23.91]
RTGH-84 45900 [13.45] 54900 [16.09] 59000 [17.29] 67500 [19.78] 75900 [22.24]
RHWB-10WRP60B
RHWB-10WRX60B
RTG-53
Med-High
0.5
[124.5]
1620 [765]
35500 [10.40] 44500 [13.04] 53300 [15.62] N/A N/A
RTG-64 40800 [11.96] 48000 [14.07] 53200 [15.59] N/A N/A
RTG-74 49300 [14.45] 59600 [17.47] 69500 [20.37] 79100 [23.18] 89700 [26.29]
RTGH-84 44600 [13.07] 53000 [15.53] 56000 [16.41] 65400 [19.17] 74400 [21.80]
RTGH-84 27700 [8.12] 30100 [8.82] 35400 [10.37] 40600 [11.90] 46000 [13.48]
RTGH-95 25400 [7.44]
30200 [8.85] 32700 [9.58] 40200 [11.78] 45400 [13.31]
40200 [11.78] 46400 [13.60]RTG-66 54700 [16.03] 63500 [18.61] 71300 [20.90]
40000 [11.72]RTG-84 47800 [14.01] 52100 [15.27] 60300 [17.67] 68100 [19.96]
40400 [11.84] 50500 [14.80] 56500 [16.56] 65500 [19.20]RTG-66 73600 [21.57]
RTG-84 45800 [13.42] 53300 [15.62] 56900 [16.68] 66900 [19.61] 76000 [22.27]
RTG-66 48300 [14.16] 57800 [16.94] 62100 [18.20] 71800 [21.04] 83000 [24.32]
RTG-84 43200 [12.66] 51800 [15.18] 56900 [16.68] 65100 [19.08] 75400 [22.10]
RTGH-95 44900 [13.16]
52700 [15.44] 58300 [17.09] 65200 [19.11] 73100 [21.42]
RTG-95 45300 [13.28] 53100 [15.56] 60000 [17.58] 70500 [20.66] 80700 [23.65]
37200 [10.90]RTG-95 45200 [13.25] 50900 [14.92] 59200 [17.35] 66400 [19.46]
33900 [9.94]RTGH-95
43300 [12.69] 53800 [15.77] 60600 [17.76] 69500 [20.37]
RTG-95 48300 [14.16] 58200 [17.06] 61000 [17.88] 71000 [20.81] 79800 [23.39]
RTGH-95 44600 [13.07] 52000 [15.24] 56500 [16.56] 65400 [19.17] 75500 [22.12]
Entering Water Temperature (°F) (°C)
CFM = Cubic Feet Per Minute
ESP = External Static Pressure
*Recommended Operating Point
Inlet Air at 72°F [22°C]
Capacities are based on a piping arrangement with a total equivalent length of 100 ft [30m].
Entering water temperatures must not exceed 160°F [71°C]
[ ] Designates Metric Conversions
Page 11
11
Air & Water
Hydronic Air Handler Performance Data
RHWB Series
CFM = Cubic Feet Per Minute
Performance is based on the following assumptions:
1) an estimated 100 ft. [30m] equivalent length of 0.75-inch piping
2) 0.50" [13] w.c. of external air static.
[ ] Designates Metric Conversions
140 [60]
150 [66] 132 [56]
125 [52]
117 [47]
110 [43]
RHWB-04WMP36B
RHWB-04WMX36B
120 [49]
130 [54]
[kg/hr]
2000/
[907]
4 68 [20]
130 [54]
122 [50]
113 [45]
106 [41]
SAMPLE HYDRONIC AIR HANDLER PERFORMANCE
160 [71] 140 [60] 137 [58]
40000 [11.72] 57 [32]
646 [305]
35000 [10.26]
29800 [8.73]
25800 [7.56]
20900 [6.13]
50 [28]
43 [24]
37 [21]
30 [17]
LB/HR GPM
AIR CFM
[L/s]
CAPACITY
(BTU/HR) [kW]
AIR TEMP
RISE (°F) [°C]
WATER INLET
TEMP (°F) [°C]
WATER OUTLET
TEMP (°F) [°C]
WATER FLOW
AIR INLET
TEMP (°F) [°C]
AIR OUTLET
TEMP (°F) [°C]
160 [71] 126 [52]
129 [54]
67100 [19.67]
140 [60]
55 [31]
1000 [472]
60000 [17.58]
50600 [14.83]
44900 [13.16]
38200 [11.20]
49 [27]
42 [23]
37 [21]
31 [17]
150 [66] 120 [49]
115 [46]
108 [42]
100 [38]
RHWB-06WMP48B
RHWB-06WMX48B
120 [49]
130 [54]
2000/
[907]
4 68 [20]
126 [52]
116 [47]
109 [43]
105 [41]
160 [71] 120 [49]
123 [51]
80500 [23.59]
140 [60]
47 [26]
1450 [684]
71800 [21.04]
62500 [18.32]
53700 [15.74]
45500 [13.33]
42 [23]
36 [20]
31 [17]
26 [14]
150 [66] 114 [46]
109 [43]
103 [39]
97 [36]
RHWB-08WRP60B
RHWB-08WRX60B
120 [49]
130 [54]
2000/
[907]
4
68 [20]
120 [49]
113 [45]
108 [42]
103 [39]
160 [71] 106 [46]
124 [51] 86800 [25.44]
140 [60]
50 [28]
1800 [850]
77000 [22.57]
66900 [19.61]
57800 [16.94]
47200 [13.83]
44 [24]
38 [21]
33 [18]
27 [15]
150 [66] 111 [44]
106 [41]
101 [38]
96 [36]
RHWB-10WRP60B
RHWB-10WRX60B
120 [49]
130 [54]
2000/
[907]
4 68 [20]
119 [48]
112 [44]
110 [43]
100 [38]
Sample Hydronic Air Handler Performance
Page 12
Efficiency
• 94% energy efficient with stainless steel condensing
heat exchanger
• Intelligent electronic controls designed to increase
energy efficiency and safety
• Third party efficiency listed by AHRI
Performance
• Industry First! 0.26 GPM minimum flow rate, 0.40 GPM
minimum activation flow rate
• RTGH-95 for 3 bathroom homes*–
9.5 gal./min. at 35°F rise max.,
8.4 gal./min. at 45°F rise
SCAQMD rule 1146.2 compliant
• RTGH-84 for 2-3 bathroom homes*–
8.4 gal./min. at 35°F rise max.,
6.6 gal./min. at 45°F rise
Compact Size
• Compact space saving design – about the size of a
medicine cabinet
Self-Diagnostic System
• Self-diagnostic system for easy installation and service.
• Digital display shows temperature setting and
maintenance codes
Technology
• Two-pipe direct vent system designed for PVC pipe,
see instructions for details
• Hot start programming helps minimize fluctuation
in water temperature, referred to as “cold water
sandwich,” during periods of frequent on/off operation
• Built-in electric blower
• Exclusive! Guardian overheat film wrap (OFW)
• EZ-Link cable available for higher demand applications
to connect two tankless units to operate as one
• Manifold up to six units with an optional MIC-6 manifold
control board
• Manifold up to 20 units with the optional MIC-185 plus
the MICS-180 manifold control assembly
High Altitude Compliant
• High-altitude capability – up to 9,840 ft. elevation above
sea level
Plus…
• Up to 38 ft. of 3" PVC Pipe or 5 ft. of 2" PVC Pipe, see
instructions for details
• Digital remote control and 10 ft. of thermostat wire
included
• Supplied with a 120 volt power cord (indoor models
only)
• Freeze protection to -30°F
• EZ- Spec
™
Sizing Software – advanced online tool that
takes the guess work out of sizing tankless applications – available at www.rheem.com/tankless
Warranty
• 12-Year on heat exchanger, 5-year on parts and 1-year
on labor
See Residential Warranty Certificate for complete information
12
Air & Water
Tankless Water Heater-Mid Efficiency Tankless Series
RHWB Series
Rheem Prestige™RTGH is a series of high efficiency condensing tankless
gas water heaters designed for continuous hot water
RTGH-DV
Indoor Direct Vent Model
11,000-199,900 Btu/h
Natural and LP Gas
RTGH-X
Outdoor Model
11,000-199,900 Btu/h
Natural and LP Gas
Commercial Applications
The RTGH Condensing Tankless Series can be
upgraded for high-temperature commercial use.
•
Temperature range is 85°F to 185°F
RTGH-95 Upgrade Kits
RTG20240A for RTGH-95DVLN
RTG20240B for RTGH-95DVLP
RTG20240C for RTGH-95XLN
RTG20240D for RTGH-95XLP
RTGH-84 Upgrade Kits
RTG20241A for RTGH-84DVLN
RTG20241B for RTGH-84DVLP
RTG20241C for RTGH-84XLN
RTG20241D for RTGH-84XLP
Note: These upgrade kits are not compatible with previous
models. See the 2012 Tankless Parts Catalog for a complete
listing.
* Based on simultaneous showers using 2.5 gallons per minute. Flow rates vary
depending on temperature of cold water supply.
LEED Points = 2
Page 13
13
Air & Water
Tankless Water Heater-Mid Efficiency Tankless Series
RHWB Series
Rheem
Prestige™RTGH-95 Specifications for 3 Bathroom Homes
Rheem
Prestige™RTGH-84 Specifications for 2-3 Bathroom Homes
Energy Factor and Average Annual Operating Costs based on D.O.E. (Department of Energy) test procedures. D.O.E. national average fuel rate
natural gas $1.218/therm; LP $1.87/gallon.
All models are available in Natural Gas and Propane (LP). For Propane replace the N with P when ordering.
†
All models listed here meet or exceed SCQAMD 1146.2.
• Factory set maximum temperature is 120° F. See Use and Care Manual for setting.
• Consult factory for information on sizing the application.
• Add a “C” to the model number when ordering Canadian models. Outdoor models are only for seasonal use in Canada. Please contact
Rheem Canada Ltd. for details.
Vent Termination Kits are required for Direct Vent models. Contact your distributor for details.
Proper gas pressure must be ensured to supply tankless gas water heaters – up to 199,900 Btu/h for RTGH-95 models, up to 157,000 Btu/h
for RTGH-84 models. (Consult your gas supplier)
Temperature Rise (° F)
Model Number 35° 45° 50° 60° 70° 77° 80° 90° 100°
RTGH-95 Water Flow (GPM)
9.5 8.4 7.6 6.3 5.4 4.9 4.7 4.2 3.8
RTGH-84 Water Flow (GPM)
8.4 6.6 6.0 5.0 4.3 3.9 3.7 3.3 3.0
Above estimates are for sizing purposes only.
Indoor Direct Vent
27 1/2”
18 1/2”
9 3/4”
51/2”6
1
/4”
2 1/2”
3
1
/4”
4 1/4”
7 1/2”
6 3/4”
3
1
/2”
2 3/4”
2
3
/4”
Outdoor
18 1/2”
9 3/4”
27 1/2”
2 1/2”2 3/4”
3
1
/4”
4 1/4”
7 1/2”
6 3/4”
3
1
/2”
2 3/4”
Parts and Accessories
Venting & terminations – 2" or 3" PVC, recess boxes, pipe
covers, extra remote controls, EZ-Link, manifolds and
cables, service valve kits, service parts, flush kits
For more information on Tankless parts and accessories, see
the Parts and Accessories catalog or call 866-720-2076.
Water Heater Flo w Rate Curves
Delt a-T
GPM
Number of 90° Elbows Maximum Length Maximum Length
of 2" Straight Pipe of 3" Straight Pipe
0 or 1 5.0 ft. (1.5 m) 38.0 ft. (11.6 m)
2 3.5 ft. (1.0 m) 36.5 ft. (11.1 m)
3 2.0 ft. (0.6 m) 35.0 ft. (10.6 m)
4 Not Available 33.5 ft. (10.2 m)
5 Not Available 32.0 ft. (9.8 m)
6 Not Available 30.5 ft. (9.3 m)
Maximum Vent Length (intake/outlet):
(ULCs636 pipe must be used for Canada.)
MODEL INPUT TEMP. ACTIVATION 77° RISE 45° RISE MAX. CONNECTION VENT WEIGHT ENERGY THERM. OP. COST
NUMBER BTU/H TYPE RANGE GPM MAX. MAX. GPM
RTGH-84DVLN
RTGH-84XLN
DESCRIPTION FEATURES ROUGHING IN DIMENSIONS (SHOWN IN INCHES) ENERGY INFO.
GAS MIN. FLOW/ GPM @ GPM @ SHIP. % OF D.O.E. ANN.
WATER GAS
157,000
11,000-
11,000-
157,000 140° F
85° to
Indoor
Direct Vent
Outdoor
0.26/0.40 3.9 6.6 8.4 3/4 3/4 27-1/2 18-1/2 9-3/4 82 .94 94% $194/326
140° F
85° to
0.26/0.40 3.9 6.6 8.4 3/4 3/4 27-1/2 18-1/2 9-3/4
HEIGHT WIDTH DEPTH DIAM. (LBS.) FACTOR EFFICIENCY NAT/LP
2" or 3"
PVC
2-Pipe
N/A
82 .92 94% $194/326
10
9
8
7
6
5
4
3
2
1
0
10 20 35 45 50 60 70 77 80 90 100 120 140
H95 Max Flow
H84 Max Flow
Page 14
14
Air & Water
Tankless Water Heater-Condensing Tankless Series
RHWB Series
Efficiency
• 82% energy efficient with stainless steel condensing
heat exchanger
• Intelligent electronic controls designed to increase
energy efficiency and safety
• Third party efficiency listed by AHRI
Performance
• Industry First! 0.26 GPM minimum flow rate, 0.40 GPM
minimum activation flow rate
• RTG-95 for 3 bathroom homes*–
9.5 gal./min. at 35°F rise max.,
8.4 gal./min. at 45°F rise
• RTG-84 for 2-3 bathroom homes*–
8.4 gal./min. at 35°F rise max.,
6.6 gal./min. at 45°F rise
• RTG-64 for 1-2 bathroom homes*–
6.4 gal./min. at 35°F rise max.,
5.6 gal./min. at 45°F rise
Self-Diagnostic System
• Self-diagnostic system for easy installation and service
• Digital display shows temperature setting and
maintenance codes
Technology
• 3"/5" concentric vent system with Integrated
condensate collector
• Hot start programming helps minimize fluctuation
in water temperature, referred to as “cold water
sandwich”, during periods of frequent on/off operation
• Connects to Metal Fab. Inc., 3"/5" concentric venting
without an adapter
• Built-in electric blower
• Exclusive! Guardian overheat film wrap (OFW)
• EZ-Link cable available for higher demand applications
to connect two tankless units to operate as one
• Manifold up to six units with an optional MIC-6 manifold
control board
• Manifold up to 20 units with the optional MIC-185 plus
the MICS-180 manifold control assembly
Low Emissions
• Environmentally friendly Ultra Low NOx burner meets
SCAQMD rule 1146.2 requirements
High Altitude Compliant
• High-altitude capability – up to 9,840 ft. elevation above
sea level
Plus…
• Digital remote control and 10 ft. of thermostat wire
included
• Supplied with a 120 volt power cord (indoor models
only)
• Freeze protection to -30°F
• EZ- Spec
™
Sizing Software – advanced online tool
that takes the guess work out of sizing tankless
applications – available at www.rheem.com/tankless
Warranty
• 12-Year on heat exchanger, 5-year on parts and 1-year
on labor
See Residential Warranty Certificate for complete information
Rheem RTG is a series of ultra low NOx, mid-efficiency tankless
gas water heaters designed for continuous hot water
RTG-DVL
Indoor Direct Vent Model
11,000-199,900 Btu/h
Natural and LP Gas
RTG-XL
Outdoor Model
11,000-199,900 Btu/h
Natural and LP Gas
Commercial Applications
RTG Tankless Series can be upgraded for high-volume
commercial use
•
Temperature range is 85°F to 185°F
RTG-95 Upgrade Kits
RTG20236A for RTG-95DVLN
RTG20236B for RTG-95DVLP
RTG20236C for RTG-95XLN
RTG20236D for RTG-95XLP
RTG-84 Upgrade Kits
RTG20237A for RTG-84DVLN
RTG20237B for RTG-84DVLP
RTG20237C for RTG-84XLN
RTG20237D for RTG-84XLP
Note: These upgrade kits are not compatible with previous
models. See the 2012 Tankless Parts Catalog for a complete
listing.
* Based on simultaneous showers using 2.5 gallons per minute. Flow rates vary
depending on temperature of cold water supply.
LEED Points = 2
Page 15
Temperature Rise (° F)
Model Number 35° 45° 50° 60° 70° 77° 80° 90° 100°
RTG-95 Water Flow (GPM)
9.5 7.4 6.6 5.5 4.7 4.3 4.1 3.7 3.3
RTG-84 Water Flow (GPM)
8.4 6.7 6.1 5.1 4.3 3.9 3.8 3.4 3.0
RTG-64 Water Flow (GPM)
6.4 5.6 5.1 4.2 3.6 3.3 3.2 2.8 2.5
Above estimates are for sizing purposes only.
15
Air & Water
Tankless Water Heater-Condensing Tankless Series
RHWB Series
Specifications
Indoor Direct Vent
Energy Factor and Average Annual Operating Costs based on D.O.E. (Department of Energy) test procedures. D.O.E. national average fuel
rate natural gas $1.218/therm; LP $1.87/gallon.
All models are available in Natural Gas and Propane (LP). For Propane replace the N with P when ordering.
• SCQAMD rule 1146.2 compliant.
• Factory set maximum temperature is 120° F. See Use and Care Manual for setting.
• Consult factory for information on sizing the application.
• Add a “C” to the model number when ordering Canadian models. Outdoor models are only for seasonal use in Canada. Please contact
Rheem Canada Ltd. for details.
Vent Termination Kits are required for Direct Vent models. Contact your distributor for details.
Proper gas pressure must be ensured to supply tankless gas water heaters – up to 199,900 Btu/h for RTG-95 models, up to 180,000 Btu/h for
RTG-84 models and up to 150,000 Btu/h for RTG-64 models. (Consult your gas supplier)
2
3
4
5
6
7
8
9
10
Water Heater Flow Rate Curves
GPM
95 Series Max. Flow
84 Series Max. Flow
64 Series Max. Flow
3”/5” Concentric
5
1
/2”
25 5/8”
13 7/8”9 7/8”
1 1/8”
4”
5”
3 3/4”
4 5/8”
5 1/4”
Dimensions from
Center Line
Outdoor
1 1/8”
5”
23 5/8”
13 7/8”8 7/8”
2
1
/2”
3 3/8”
5 1/4”
Dimensions from
Center Line
2 3/4”
Parts and Accessories
Venting & terminations, recess boxes, pipe covers, extra
remote controls, EZ-Link, manifolds and cables, service
valve kits, service parts, flush kits
For more information on Tankless parts and accessories, see
the Parts and Accessories catalog or call 866-720-2076.
Number of 90° Elbows Maximum Length of Straight Pipe
1 39.0 ft. (12.0 m)
2 37.5 ft. (11.5 m)
3 36 ft. (11 m)
4 34.5 ft. (10.5 m)
5 33.0 ft. (10.0 m)
6 31.5 ft. (9.5 m)
Maximum Vent Length (intake/outlet):
(Manufacturer approved venting required)
MODEL INPUT TEMP. ACTIVATION 77° RISE 45° RISE MAX. CONNECTION VENT WEIGHT ENERGY THERM. OP. COST
NUMBER BTU/H TYPE RANGE GPM MAX. MAX. GPM
DESCRIPTION FEATURES ROUGHING IN DIMENSIONS (SHOWN IN INCHES) ENERGY INFO.
GAS MIN. FLOW/ GPM @ GPM @ SHIP. % OF D.O.E. ANN.
WATER GAS
HEIGHT WIDTH DEPTH DIAM. (LBS.) FACTOR EFFICIENCY NAT/LP
RTG-95 ULTRA LOW NOx SERIES FOR 3 BATHROOM HOMES
RTG-95DVLN
199,900
RTG-95XLN
199,900 140° F*
11,000-
11,000-
85° to
Indoor
0.26/0.40
Direct Vent
0.26/0.40
Outdoor
4.3 7.4 9.5 3/4 3/4 25-5/8 13-7/8 9-7/8
140° F*
85° to
4.3 7.4 9.5 3/4 3/4 23-5/8 13-7/8 8-7/8
3 by 5
54 .82 82%
CONCENTRIC
54 .82 82%
N/A
$223/374
$223/374
RTG-84 ULTRA LOW NOx SERIES FOR 2-3 BATHROOM HOMES
RTG-84DVLN
180,000
RTG-84XLN
180,000 140° F
11,000-
11,000-
85° to
Indoor
0.26/0.40
Direct Vent
Outdoor
0.26/0.40
3.9 6.7 8.4 3/4 3/4 25-5/8 13-7/8 9-7/8
140° F
85° to
3.9 6.7 8.4 3/4 3/4 23-5/8 13-7/8 8-7/8 N/A 54 .82 82% $223/374
3 by 5
54 .82 82% $223/374
CONCENTRIC
RTG-64 ULTRA LOW NOx SERIES FOR 1-2 BATHROOM HOMES
RTG-64DVLN
150,000
RTG-64XLN
150,000 140° F
11,000 -
11,000 -
85° to
Indoor
Direct Vent
140° F
85° to
Outdoor
0.26/0.40
0.26/0.40 5.6 6.4
3.3
3.3
5.6 6.4
3/4 3/4 25-5/8 13-7/8 9-7/8
3/4 3/4 23-5/8 13-7/8 8-7/8 N/A 54 .82 82% $223/374
3 by 5
54 .82
CONCENTRIC
82%
$223/374
Page 16
16
Air & Water
Accessories
RHWB Series
ACCESSORIES
RETURN AIR PLENUM: RXGR-C17B
RXGR-C24B
EXTERNAL BOTTOM FILTER RACK: RXGF-CB
EXTERNAL SIDE FILTER RACK: RXGF-CA
TANKLESS WATER HEATER ACCESSORIES
Visit RheemTankless.com for a current listing of Rheem Tankless
accessories.
*Filter racks are shipped without filters.
Filters shipped with hydronic air handler may be used or a suitable
1" [25.4 mm] filter.
PLENUM DATA FOR “INDOOR COOLING” COILS
Plenum adapters are required in some instances for use on applications when plenum and hydronic air handler size do not match. See
Indoor Coil Specification Sheet for Details.
[ ] Designates Metric Conversions
RHWB-04WMAES
RHWB-06WGAES
RHWB-08WRAJS
RHWB-10WRAJS
FILTER RACK FILTER SIZES* INCHES [mm]
MODEL
RXGF-CB
(BOTTOM)
153/4 x 25
[400 x 635]
153/4 x 25
[400 x 635]
223/4 x 25
[578 x 635]
223/4 x 25
[578 x 635]
RXGF-CA
(SIDE)
153/4 x 25
[400 x 635]
153/4 x 25
[400 x 635]
153/4 x 25
[400 x 635]
153/4 x 25
[400 x 635]
AIR HANDLER
WIDTH
IN. [mm]
171/2 [445] 161/4 [413] RXAA-C185 RXAL-B16BU
171/2 [445] 201/4 [514] RXAA-C173 RXAL-B20BU
171/2 [445] 215/8 [549]
171/2 [445] 251/4 [641] RXAA-C174 RXAL-B25BU
241/2 [622] 251/4 [641]
241/2 [622] 215/8 [549] RXAA-C187 RXAL-B21BU
PLENUM
WIDTH
IN. [mm]
PLENUM ADAPTER
RXAA-C187 RXAL-B21BU
RXAA-C177 RXAL-B25BU
PLENUM
COIL
Page 17
17
Air & Water
Typical Piping
RHWB Series
Typical Piping Arrangement for Direct Space Heating and
Domestic Water Supply with Tankless
All piping to be 3/4 inch.
(BV)
(DV)
Evaporator Coil
Air Separator
Page 18
18
Air & Water
Limited Warranty
RHWB Series
GENERAL TERMS OF LIMITED WARRANTY*
Rheem will furnish a replacement for any part of this product
which fails in normal use and service within the applicable
period stated, in accordance with the terms of the limited
warranty.
*For complete details of the Limited and Conditional Warranties, including
applicable terms and conditions, contact your local contractor or the
Manufacturer for a copy of the product warranty certificate.
Labor* ..................................................................One (1) Year
Air Handler Heat Exchanger/Coil*......................Five (5) Years
Any Other Part* ..................................................Five (5) Years
Page 19
19
Air & Water
Notes
RHWB Series
Page 20
The new degree of comfort.
™
Rheem Heating, Cooling & Water Heating • P.O. Box 17010
Fort Smith, Arkansas 72917 • www.rheem.com
In keeping with its policy of continuous progress and product improvement, Rheem reserves the right to make changes without notice.
PRINTED IN U.S.A 01/14 QG FORM NO. H11-547 REV. 3
Rheem Canada Ltd./Ltée • 125 Edgeware Road, Unit 1
Brampton, Ontario • L6Y 0P5
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