Air Flow - Wolf Steel Condo Pack Installation And Operating Instructions Manual

46
5.4

AIR FLOW

For proper furnace operation, air fl ow over the heat exchanger is of utmost importance. Insuffi cient airfl ow
accelerates metal fatigue and possible failure in the heat exchanger, as well as decrease effi ciency. Excessive
IOM
IOM
airfl ow promotes accelerated corrosion of the heat exchanger.
IMPORTANT:
HEATING
DO NOT BYPASS THIS STEP OF THE
Thermal Efficiency
START UP PROCEDURES.
AFUE
Input BTU/H
5.4.1 Temperature Rise Check
Output BTU/H (Thermal
Efficiency)
When the duct system is complete and the air filter or filters are in place, determine if the
Output BTU/H (AFUE)
airflow is correct.
COOLING
1� Insert a duct thermometer in the supply air duct. The thermometer should be placed as close
BTU/H
EER
REF.
2� Insert a duct thermometer in the return air duct as close to the furnace as practical. Ensure that
WEIGHT (lb)
HEATING
3� Operate the furnace long enough to obtain steady state conditions at the input listed on the
Thermal Efficiency
4� When the two thermometers have stabilized, usually within 5-8 minutes, compare the two
AFUE
Input BTU/H
Output BTU/H (Thermal
5. Compare the measured ∆T to the temperature rise range shown on the rating plate.
Efficiency)
Output BTU/H (AFUE) 6� Unless stated differently on the rating plate, the temperature rise should normally range
COOLING
BTU/H
7. If the measured ∆T is above the approved temperature range, there is too little air flow. It must
EER
REF.
WEIGHT (lb)
*** If the measured ∆T is too low, there is too much air flow.
MODEL
CCGM015A
CCGM030A
CCGM040A
CCGM050A
MODEL
CACM012A
CACM018A
CACM024A
CACM030A
W415-1307 / B / 03.31.2017
PSC015A012A
90%
96.8%
15,000
14,520
13,500
as practical to the furnace, but out of the "line of sight" of the heat exchanger (this prevents
12,800
false readings owing to radiant heat). Ensure that the thermometer location is within the duct air
10.8
stream. Avoid locations such as the inside radius of an elbow, etc.
410A
328
the thermometer location will be unaffected by humidifier bypass ducts, etc. Choose a location
well within the main air stream.
PSC040A012A
furnace rating plate.
90%
91.7%
readings. Subtract the return air temperature from the supply air temperature. The difference is
40,000
the temperature rise, also called ∆T.
36,000
36,680
between 35° to 65°F (20° to 36°C). When adjusting the temperature rise, the ideal temperature
rise is approximately 50°F (28°C).
12,800
10.8
be increased by removing restrictions in the ductwork, adding supply or return ductwork, or by
410A
selecting a higher motor speed.
328
HEATING SETTING
Factory
15 kBTU/H
High
Factory
30 kBTU/H
High
Factory
40 kBTU/H
High
Factory
50 kBTU/H
High
COOLING SETTING
Factory
1.0 TON
High
Factory
1.5 TON
High
Factory
2.0 TON
High
2.5 TON Factory
PSC015A018A PSC015A024A
90% 90%
96.8% 96.8%
H22.0
15,000 15,000
14,520 14,520
13,500 13,500
16,500 19,500
9.6 9.0
410A 410A
349 349
PSC040A018A PSC040A024A
90% 90%
91.7% 91.7%
40,000 40,000
36,000 36,000
36,680 36,680
16,500 19,500
9.6 9.0
410A 410A
349 349
TABLE 4.
-------- CFM AT EXTERNAL STATIC PRESSURE, INCHES WATER COLUMN --
Speed
0.1 0.2 0.3
Tap#
5 439 388 333
4 569 529 494
4 569 529 494
3 771 744 729
3 771 744 729
2 924 908 886
2 924 908 886
1 1010 971 938
5 439 388 333
4 569 529 494
3 771 744 729
2 924 908 886
3 771 744 729
2 924 908 886
1 1010 971 938
PSC015A030A PSC030A012A
90% 90%
96.8% 93%
15,000 30,000
14,520 27,000
13,500 27,900
24,400 12,800
9.0 10.8
410A 410A
349 328
PSC040A030A PSC050A012A
90% 90%
91.7% 90.6%
40,000 50,000
36,000 45,000
36,680 45,300
24,400 12,800
9.0 10.8
410A 410A
349 328
0.4 0.5 0.6 0.7 0.8
294 240 193 - -
470 415 368 346 306
470 415 368 346 306
704 693 663 644 610
704 693 663 644 610
868 839 804 757 696
868 839 804 757 696
906 870 824 773 713
294 240 193 - -
470 415 368 346 306
704 693 663 644 610
868 839 804 757 696
704 693 663 644 610
868 839 804 757 696
906 870 824 773 713
PSC030A018A
90%
93%
30,000
27,000
27,900
16,500
9.6
410A
349
PSC050A018A
90%
90.6%
50,000
45,000
45,300
16,500
9.6
410A
349
0.9 1.0
- -
273 -
273 -
566 556
566 556
617 -
617 -
617 -
- -
273 -
566 566
617 -
566 566
617 -
617 -