ECR International G95V, Руководство по установке и эксплуатации

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For proper furnace operation, air flow over the heat
exchanger is of utmost importance. Insufficient
airflow accelerates metal fatigue and failure in the
heat exchanger and excessive airflow promotes
accelerated corrosion of the heat exchanger.
IMPORTANT: Do not bypass this step of the
start up procedures.
TEMPERATURE RISE CHECK
When the duct system is complete and the air filter or
filters are in place, determine if the airflow is correct
for both low and high fire input rates..
1. Insert a duct thermometer in the supply air
duct. The thermometer should be placed as
close as practical to the furnace, but out of the
“line of sight” of the heat exchanger (this pre-
vents false readings owing to radiant heat). En-
sure that the thermometer location is within the
duct air stream. Avoid locations such as the in-
side radius of an elbow, etc.
20 - AIR FLOW
Any adjustments to the burner manifold pressure
should be carried out with the use of a manometer
or calibrated magnehelic gauge. Do not adjust the
gas valve pressure regulator more than ±0.3” w.c.
IMPORTANT: Never adjust the input of the furnace
to exceed the input shown on the rating plate.
In the previous example where the heating value of
the gas is 1100 BTU/cu. ft., the burner manifold pres-
sure can be reduced 3% to 3.4” w.c., which is within
the ±0.3” w.c. specification to bring the input into
compliance. Refer also to “Setting the Gas Manifold
Pressure” and “High Altitude in the Gas Supply &
Piping” section of this manual. Contact the fuel sup-
plier for specific gas heating content values.
Input =
Heating Value of Gas x 3600
Time in Sec. for 1 cu. ft.
where:
input is expressed in BTU/Hr
heating value of the gas is expressed in BTU/ft
3
and time is the number of seconds required for
the test dial to indicate 1 cubic foot.
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If using a gas meter with SI (metric) units:
1 cubic foot = 0.0283 cubic meters
1 cubic meter = 35.315 cubic feet
0.01 cubic meter = 0.3531 cubic feet
0.5 cubic meter = 1.766 cubic feet
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TABLE 1B - AIR FLOW FOR TEMPERATURE RISE
Furnace
Model
High Fire (HF) CFM Required for a ▲T of:
35 45 55 65
60 1501 1167 955 808
80 2001 1557 1274 1078
100 2502 1946 1592 1347
120 3002 2335 1910 1616
Furnace
Model
Low Fire (LF) CFM Required for a ▲T of:
25 35 45 55
60 901 700 573 485
80 1201 934 764 647
100 1501 1167 955 808
120 1801 1401 1146 970
TABLE 1A - RANGE OF TEMPERATURE RISE
Furnace Model Temperature Rise
60, 80, 100, 120
High Fire (HF) 35 - 65°F
Low Fire (LF) 25 - 55°F
TABLE 10 - AIR FLOW
MODEL 95V ESP 0.1” to 1.0” w.c.
Input
A/C
Tonnage
ADJUST
Jumper
COOL
Jumper
CFM
60000 3 Ton NORM
A 1200
B 1000
C 800
D 600
80000 3 Ton NORM
A 1200
B 1000
C 800
D 600
80000 4 Ton NORM
A 1600
B 1200
C 1000
D 800
100000 5 Ton NORM
A 2000
B 1600
C 1200
D 800
120000 5 Ton NORM
A 2000
B 1600
C 1200
D 800
Note: Moving the ADJUST jumper from the NORM position to the
(+) or (-) position will increase or lower the CFM by 15%