Circulator Blower Speeds - Amana MVM97 Installation Instructions Manual

Circulator Blower Speeds

T
O AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK
OFF
TURN POWER TO THE FURNACE BEFORE CHANGING SPEED TAPS
This furnace is equipped with an ECM circulator blower.
The heating blower speed is shipped set at "B", and the
cooling blower speed setting is "D". These blower speeds
should be adjusted by the installer to match the instal-
lation requirements so as to provide the correct heating
temperature rise and correct cooling CFM.
Use the dual 7-segment LED display adjacent to the DIP
switches to obtain the approximate airflow quantity. The
airflow quantity is displayed as a number on the display,
rounded to the nearest 100 CFM. The display alternates
airflow delivery indication and the operating mode indica-
tion.
Example: The airflow being delivered is 1225 CFM. The
display indicates 12. If the airflow being delivered is
1275, the display indicates 13.
1. Determine the tonnage of the cooling system installed
with the furnace. If the cooling capacity is in BTU/hr
divide it by 12,000 to convert capacity to TONs.
Example: Cooling Capacity of 30,000 BTU/hr.
30,000/12,000 = 2.5 Tons
2. Determine the proper air flow for the cooling system.
Most cooling systems are designed to work with air
flows between 350 and 450 CFM per ton. Most man-
ufacturers recommend an air flow of about 400 CFM
per ton.
Example: 2.5 tons X 400 CFM per ton = 1000 CFM
The cooling system manufacturer's instructions must be
checked for required air flow. Any electronic air cleaners
or other devices may require specific quantity of air, con-
sult installation instructions of those devices for require-
ments.
3. Knowing the furnace model, locate the high stage
cooling air flow table. Look up the cooling air flow
determined in step 2 and find the required cooling
speed and adjustment setting.
Example: A DM97MC0603BN** furnace installed with
a 2.5 ton air conditioning system. The air flow need-
ed is 1000 CFM. Looking at the cooling speed chart
for DM97MC0603BN**, find the air flow closest to 1000
CFM. A cooling airflow of 1000 CFM can be attained
by selecting the cooling speed "C" and the adjust-
ment to "normal".
WARNING
M odel
,
.
*MVM970603BN*
*MVM970803BN*
*MVM970804CN*
*MVM971005CN*
*MVM971205DN*
*CVM970603BN
*CVM970803BN
*CVM970804CN*
*CVM971005CN*
*100% CFM shown. CFM will vary proportionally with the gas valve BTU/H input.
4. Continuous fan speed is selectable at 25%, 50%,
75% or 100% of the furnace's maximum airflow capability.
Example:
capability is 2000 CFM, the continuous fan speed
at 25% will be 0.25 x 2000 or 500 CFM.
5. Locate the blower speed selection DIP switches on
the integrated control module. Select the desired "cool-
ing" speed tap by positioning switches 1 and 2 appro-
priately. Select the desired "adjust" tap by positioning
switches 9 and 10 appropriately. Refer to the DIP switch
chart for switch positions and their corresponding taps.
Verify CFM by noting the number displayed on the dual
7-segment LED display.
6. The multi-speed circulator blower also offers sev-
eral custom ON/OFF ramping profiles for cooling. These
profiles may be used to enhance cooling performance and
increase comfort level. The ramping profiles are selected
using DIP switches 7 and 8. Refer to the bullet points be-
low for a description of each ramping profile. Verify CFM
by noting the number displayed on the dual 7-segment
LED display.
Low
High Stage
Tap Stage
Cool
Cool
A
398 599
557 817
B
696 1007
C
810 1212
D
403 629
A
540 806
B
C 705 1023
819 1230
D
A 513 789
660 967
B
791 1182
C
913 1375
D
564 820
A
784 1133
B
982 1464
C
1259 1736
D
547 867
A
B 831 1160
1020 1467
C
D 1278 1910
433 656
A
541 790
B
686 972
C
806 1195
D
A 405 624
B 549 808
C 678 994
D 784 1177
A 556 837
714 1022
B
C 838 1206
991 1475
D
524 784
A
744 1078
B
927 1388
C
1185 1766
D
If the furnace's maximum airflow
100% Low heat
Heat CFM for
*CFM 2 stage
953 667
1059 740
1158 808
1260 881
1202 855
1316 923
1389 1033
1396 1063
1228 867
1337 939
1430 1016
1516 1077
1818 1256
1870 1292
1910 1316
1957 1358
1891 1329
1940 1362
1968 1390
2028 1440
938 687
950 751
986 814
992 874
1057 758
1146 815
1256 882
1349 946
1234 889
1325 944
1442 1019
1528 1068
1759 1209
1797 1249
1840 1277
1881 1300