Rheem Heating, Cooling and Water Heating 5
HYDRONIC AIR HANDLER AIR FLOW PERFORMANCE - RHWB MODELS
21
!
WARNING
SETTING BLOWER
TIMINGS
The IAC (Integrated Air Handler
Controls) has four quick connect
terminals for connecting the motor
speed leads. These are:
1. FAN SPEED — motor runs on
this speed when the thermostat
is in the “FAN ON” position.
2. COOL — connect desired
cooling speed.
3. HEAT — connect desired
heating speed.
If cooling speed and fan speed are
desired to be the same, this may be
accomplished by not connecting “Y”
to the IAC.
If desired for cool, fan and heat to all
be the same speed, then “piggyback”
jumper “H/C” to “FAN” and do not
connect “Y” to the IAC. Do not
connect other motor leads to “H” or
“C.”
DIRECT DRIVE
INSTRUCTIONS FOR
CHANGING BLOWER
SPEED
DISCONNECT THE ELECTRICAL
SUPPLY TO THE AIR HANDLER
BEFORE ATTEMPTING TO
CHANGE THE BLOWER SPEED.
FAILURE TO DO SO CAN CAUSE
ELECTRICAL SHOCK RESULTING
IN PERSONAL INJURY OR DEATH.
The blower motor must be wired for
blower speeds required for normal
operation.
If additional blower speed taps are
available (leads connected to “M1”
and “M2” on the electronic control),
speeds may be changed if necessary
to fit requirements of the particular
installation. Reconnect the unused
motor leads to “M1” or “M2.” Check
motor lead color for speed
designation.
Heating speeds should not be
reduced where it could cause the air
handler air temperature rise to
exceed the maximum outlet air
temperature specified for the unit.
IMPORTANT:
Always check air
temperature rise after changing the
heating speed for any reason.
CFM @ ESP
Model
Blower / Motor HP Speed
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
Low
921
915
886
876
855
841
817
780
734
690
M-Lo
1189
1180
1179
1137
1131
1102
1072
1030
985
915
RHWB-06WMP48A
11x7, 3/4
M-Hi
1335
1315
1306
1307
1277
1246
1210
1161
1090
1019
High
1841
1795
1747
1681
1622
1560
1500
1420
1358
1288
Low
1319
1307
1300
1240
1236
1210
1177
1149
1100
1032
M-Lo
1484
1480
1471
1463
1418
1385
1359
1314
1246
1166
RHWB-08WRP60A
11x10, 3/4
M-Hi
1687
1676
1671
1611
1586
1553
1513
1453
1389
1284
High
1971
1974
1948
1929
1871
1806
1751
1699
1610
1511
Low
1299
1294
1308
1279
1257
1231
1205
1165
1122
1053
M-Lo
1515
1519
1499
1487
1415
1418
1394
1348
1296
1221
RHWB-10WRP60A
11x10, 3/4
M-Hi
1684
1695
1693
1663
1620
1586
1569
1514
1451
1365
High
1954
1971
1974
1982
1973
1944
1917
1818
1775
1700
HYDRONIC AIR HANDLER AIR FLOW PERFORMANCE - RHWB MODELS
TABLE 4
Note: Units tested without filters in place.
RTG-53
32600
39500
47500
N/A
N/A
RTG-64
40900
47100
51000
N/A
N/A
RTG-66
40200
46400
54700
63500
71300
RHWB-06WMP48A
RTG-74
High
0.5
1622
37800
46200
54000
62700
71300
RTG-84
40000
47800
52100
60300
68100
RTG-95
37200
45200
50900
59200
66400
RTG-53
35000
41300
50600
N/A
N/A
RTG-64
42000
50900
53400
N/A
N/A
RTG-66
40400
50500
56500
65500
73600
RHWB-08WRP60A
RTG-74
Med-High
0.5
1586
40300
49700
58800
71600
81600
RTG-84
45800
53300
56900
66900
76000
RTG-95
45300
53100
60000
70500
80700
RTG-53
35500
44500
53300
N/A
N/A
RTG-64
40800
48000
53200
N/A
N/A
RTG-66
48300
57800
62100
71800
83000
RHWB-10WRP60A
RTG-74
Med-High
0.5
1620
49300
59600
69500
79100
89700
RTG-84
43200
51800
56900
65100
75400
RTG-95
48300
58200
61000
71000
79800
9
HYDRONIC AIR HANDLER TANKLESS WATER HEATER PERFORMANCE
TABLE 1
Entering Water Temperature (°F)
Air Handler Model Tankless Model Blower Speed ESP (in. w.c.)
Heating Air Delivery
(CFM)
120
130
140
150
160
Performance is based on the following assumptions:
1) an estimated 100 ft. equivalent length of 0.75-inch piping.
2) 0.80” w.c. of external air static.
HYDRONIC AIR HANDLER WITH TANKLESS WATER HEATER PERFORMANCE
Performance is based on the following assumptions:
1) an estimated 100 ft. equivalent length of 0.75-inch piping
2) 0.50” w.c. of external air static.
