NCP Comfort Pack CP9 T Series, Руководство по установке

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Installation Guide
|
Comfort Pack T Series
with up to
95% Gas Heat
19
Derating by Valve Outlet Pressure
Adjustment for High Altitude Operation
Instructions
1
. Determine the required valve outlet pressure for the elevation
where the heater will be operating. If unsure of the elevation,
contact the local gas supplier.
Input BTU/HR =
Heating Value of Gas (BTU/Ft
3
) x 3600 x correction factor
Time in Seconds (for 1 cu.ft.) of Gas
METER TIME IN MINUTES AND SECONDS FOR NORMAL
INPUT RATING OF FURNACES EQUIPPED FOR NATURAL OR LP GAS
INPUT
BTU/HR
METER
SIZE
CU. FT.
HEATING VALUE OF GAS BTU PER CU. FT.
900 1000 1040 1100 2500
MIN. SEC. MIN. SEC. MIN. SEC. MIN. SEC. MIN. SEC.
50,000 ONE
TEN
1
10
5
50
1
12
12
00
1
12
15
30
1
13
18
12
3
30
20
00
75,000 ONE
TEN
0
7
44
12
0
8
48
0
0
8
50
19
0
8
53
48
2
20
0
0
100,000 ONE
TEN
0
5
33
24
0
6
36
0
0
6
38
15
0
6
40
36
1
15
30
0
125,000 ONE
TEN
0
4
26
19
0
4
29
48
0
5
30
0
0
5
32
17
1
12
12
0
150,000 ONE
TEN
0
3
31
36
0
4
24
0
0
4
25
10
0
4
26
20
1
10
0
0
NOTE: THIS ADJUSTMENT CAN ONLY BE DONE
AFTER THE HEATER IS IN OPERATION. IT IS
INCLUDED IN THE STARTUP PROCEDURES.
2.
With the manual valve positioned to prevent flow to the main
burner, connect a manometer to the 1/8
"
pipe outlet pressure
tap in the valve. Use a water column manometer that is readable
to the nearest tenth of an inch.
3.
Remove the cap from the pressure adjusting screw
and adjust the valve outlet pressure to the pressure
setting selected from the table. Cycle the main burner once or
twice to properly seat the adjustment spring in the valve. Re-
check the pressure. If necessary, re-adjust the pressure. When
the pressure is correct, remove the manometer and replace the
cap. Check for leaks at the pressure tap fitting.
4.
With the heater operating determine that the inlet pressure to
the heater for natural gas is between 4.5 and 10 inches w.c., and
for propane between 11 and 14 inches w.c. Take this reading as
close as possible to the heater (heaters are equipped with gas
valves that have an inlet pressure tap.) If the inlet is not within
the specified range, the inlet pressure must be corrected and
Steps 3 and 4 repeated.
5.
Find the Valve Outlet Pressure Adjustment label in the plastic bag
that contained these instructions. Using a permanent marker, fill
in the pressure setting. Adhere the label on the heater near the
gas valve so that it is conspicuous to someone serving the valve.
NATURAL GAS - HIGH HEATING VALUE
MANIFOLD PRESSURE (GAS VALVE
SETTING FOR NAT. GAS)
ALTITUDE ABOVE
THE SEA LEVEL
CHS0043 CHS0050
0 TO 1,999 FT
50 47 Factory Orifice Size
3.5 3.5 Manifold Pressure
2,000 to 2,999 FT
49 47 Orifice Size
3.2 3.2 Manifold Pressure
3,000 to 3,999 FT
49 47 Orifice Size
3.0 3.0 Manifold Pressure
4,000 to 4,999 FT
49 47 Orifice Size
2.8 2.8 Manifold Pressure
5,000 to 5,999 FT
49 47 Orifice Size
2.5 2.5 Manifold Pressure
6,000 to 6,999 FT
50 49 Orifice Size
3.0 3.1 Manifold Pressure
7,000 to 7,000 FT
50 49 Orifice Size
2.9 3.0 Manifold Pressure
8,000 to 8,900 FT
50 49 Orifice Size
3.0 3.0 Manifold Pressure
9,000 to 9,999 FT
50 49 Orifice Size
2.9 2.9 Manifold Pressure
High Altitude Deration Chart for Natural Gas - High Heating Value
NATURAL GAS - LOW HEATING VALUE
MANIFOLD PRESSURE (GAS VALVE
SETTING FOR NAT. GAS)
ALTITUDE ABOVE
THE SEA LEVEL
CHS0043 CHS0050
0 TO 1,999 FT
50 47 Factory Orifice Size
3.5 3.5 Manifold Pressure
2,000 to 2,999 FT
49 47 Orifice Size
3.5 3.5 Manifold Pressure
3,000 to 3,999 FT
49 47 Orifice Size
3.4 3.4 Manifold Pressure
4,000 to 4,999 FT
49 47 Orifice Size
3.2 3.2 Manifold Pressure
5,000 to 5,999 FT
49 47 Orifice Size
3.0 3.0 Manifold Pressure
6,000 to 6,999 FT
50 49 Orifice Size
3.1 3.5 Manifold Pressure
7,000 to 7,000 FT
50 49 Orifice Size
2.9 3.2 Manifold Pressure
8,000 to 8,900 FT
50 49 Orifice Size
3.0 3.0 Manifold Pressure
9,000 to 9,999 FT
50 49 Orifice Size
2.9 2.9 Manifold Pressure
High Altitude Deration Chart for Natural Gas - Low Heating Value
PROPANE GAS
MANIFOLD PRESSURE (GAS VALVE SETTING
FOR LP GAS)
ALTITUDE ABOVE THE
SEA LEVEL
CHS0043 CHS0050
0 to 1,999 FT
60 56 Conversion to LP Orifice Size
10 10 Manifold Pressure
2,000 to 2,999 FT
60 56 Orifice Size
9.2 9.2 Manifold Pressure
3,000 to 3,999 FT
60 56 Orifice Size
8.7 8.7 Manifold Pressure
4,000 to 4,999 FT
60 56 Orifice Size
8.5 8.5 Manifold Pressure
5,000 to 5,999 FT
61 58 Orifice Size
9.6 9.6 Manifold Pressure
6,000 to 6,999 FT
61 58 Orifice Size
9.2 9.2 Manifold Pressure
7,000 to 7,999 FT
61 58 Orifice Size
8.8 8.8 Manifold Pressure
8,000 to 8,999 FT
61 58 Orifice Size
8.5 8.5 Manifold Pressure
9,000 to 9,999 FT
61 58 Orifice Size
8.5 8.5 Manifold Pressure
High Altitude Deration Chart for Natural Gas - High Heating Value