Napoleon 9700 SERIES, Installation And Operating Instructions Manual

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W415-1243 / A / 03.19.15
47
IOM
18.0 AIR FLOW
18.1 TEMPERATURE RISE CHECK
TABLE 1 - RANGE OF TEMPERATURE RISE
Furnace Models Temperature Rise
ALL
High Fire (HF) 35 - 65°F (20 - 36°C)
Low Fire (LF) 20 - 50°F (11 - 28°C)
H12.15.4
TABLE 7B - AIR FLOW (Y2-HIGH COOL)
ECM 2.3 / EON ESP 0.1” to 1.0” w.c.
Input
Max A/C ADJUST COOL
CFM
Tonnage Jumper Jumper
40000 2½ TON NORM
A 940
B 750
C 560
D N/A
60000 3 TON NORM
A 1125
B 940
C 750
D 560
80000
3 TON
NORM
A 1125
B 940
C 750
D 560
4 TON
A 1500
B 1125
C 940
D 750
100000 5 TON NORM
A 1750
B 1400
C 1050
D 700
120000 5 TON NORM
A 1750
B 1400
C 1050
D 700
TABLE 7A - AIR FLOW (Y1-LOW COOL)
ECM 2.3 / EON ESP 0.1” to 1.0” w.c.
Input
A/C ADJUST COOL
CFM
Tonnage Jumper
Jumper
40000 N/A NORM
A N/A
B N/A
C N/A
D N/A
60000 N/A NORM
A 675
B 564
C N/A
D N/A
80000
3 TON
NORM
A 675
B 564
C N/A
D N/A
4 TON
A 900
B 675
C 564
D N/A
100000 N/A NORM
A 1050
B 540
C 630
D N/A
120000 N/A NORM
A 1050
B 840
C 630
D N/A
NOTE: Moving the ADJUST jumper from the NORM position to the (+) or (-)
position will increase or lower the CFM by 15%. Air fl ow based on approximately
375 CFM/Ton. Refer to Figure 39 in the manual.
H12.1.8
H22.0
For proper furnace operation, air fl ow over the heat exchanger is of utmost importance. Insuf fi cient air fl ow
accelerates metal fatigue and possible failure in the heat exchanger, as well as decrease ef fi ciency. Excessive
air fl ow promotes accelerated corrosion of the heat exchanger.
IMPORTANT:
DO NOT BYPASS THIS STEP OF THE
START UP PROCEDURES.
H22.1.3
When the duct system is complete and the air fi lter or fi lters are in place, determine if the air fl ow is correct for both
low and high fi re 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 prevents false readings owing to
radiant heat). Ensure that the thermometer location is within the duct air stream. Avoid locations such as
the inside radius of an elbow, etc.
2. Insert a duct thermometer in the return air duct as close to the furnace as practical. Ensure that the
thermometer location will be unaffected by humidi fi er bypass ducts, etc. Choose a location well within the
main air stream.
3. Operate the furnace long enough to obtain steady state conditions at both input rates (High Fire and Low Fire).
4. When the two thermometers have stabilized, usually within 5-8 minutes, compare the two readings.
Subtract the return air temperature from the supply air temperature. The difference is the temperature rise,
also called
∆ T.
5. Compare the measured ∆ T to the temperature rise range shown on the rating plate.
Unless stated differently on the
rating plate, the temperature rise
should normally range between 35°
to 65°F (20 to 36°C) High Fire, 20°
to 50°F (11 to 28°C) Low Fire. When
adjusting the temperature rise, the
ideal temperature rise is approximately
mid-range.
If the measured
∆ T is above the
approved temperature range,
there is too little air
fl ow. It must
be increased by selecting the
appropriate “HEAT” jumper setting,
removing restrictions in the
ductwork, or adding supply or return
ductwork.
If the measured
∆ T is too low, there
is too much air fl ow.