Carrier 58PAV - Manual (Page 14)

(3.) Turn off all gas appliances £ind pUots.
(4.) Start furnace and let run for 3 minutes.
(5.) Measure time (in seconds) for gas meter to com­
plete one revolution.
(6.) Refer to Table 16 for cubic ft of gas per hour.
(7.) Multiply gas rate cu ft/hr x heating value (Btu/
cu ft).
"E xample :
Btu heating input = Btu/cu ft times cu ft/hr
Heating value of gas = 1070 Btu/cu ft
Time for one revolution of 2-cu/ft dial = 72 seconds
Gas rate = 100x1070 = 107,000 Btuh
(8.) Measured gas input should not exceed gas
input on unit rating plate.
(9.) Proceed to step c to adjust manifold pressure,
c. Adjust gas input.
(1.) Remove regulator adjustment seal cap. See
Fig. 14.
(2.) Turn adjusting screw counterclockwise to
decrease input. Turn screw clockwise to
increase input. DO NOT set manifold pressure
less than 3.2 or more than 3.8 maximum ins. wc
for natural gas. Make any major adjustments
by changing meiin burner orifices.
(3.) When correct input is obtained, replace regula­
tor seal cap. Main burner ñame should be clear
blue, almost transparent. See Fig. 15.
BURNER FLAME
MANIFOLD
PRESSURE TAP
Fig. 14—Redundant Automatic Gas Control Valve
Table 15—Model 58PAV Orifice Size and Manifold Pressure For Correct Input Rate
(Tabulated data based on altitude up to 2000 ft and 22,000 Btuh per burner.)
Gas
Heat
Value
(Btu/cu ft)
860
875
890
905
920
935
950
965
980
995
1010
1025
1040
1055
1070
1085
1100
SPECIFIC GRAVITY OF NATURAL GAS
0.56
Orf
No.
41
42
42
42
42
43
“ 43 “
43
44
43
44
44
“ 4 ^
'45~'
MnfId
Press
3.2
3.6
3.4
3.3
3.2
3.8
3.7
3.6
3.4
3.8
3.3
3.7
3.2
3.6
3.5
3.4
3.3
3.2
3.8
3.7
0.58
Orf
No.
41
42
41
42
42
42
42
■ 4 ^
■ 4 ^“
" 4 ^
44
43
44
43
44
43
44
44
44
MnfId
Press
3.3
3.7
3.2
3.6
3.4
3.3
3.2
"as"
3.7
3.6
3.5
“as"
3.4
3.7
3.3
3.6
3.2
3.5
■aT“
3.3
3,2
3.8
0.60
Orf
No.
41
42
40
41
42
41
42
42
42
42
43
43
43
43
44
43
44
43
44
43
44
44
44
44
MnfId
Press
3.4
3.8
3.2
3.3
3.7
3.2
3.6
3.4
3.3
3.2
3.8
3.6
3.5
3.8
3.4
3.7
3.3
3.6
3.2
3.5
3.4
3.3
3.2
0.62
Orf
No.
41
40
41
42
40
41
42
41
42
42
42
42
43
43
43
43
~4^
44
43
44
43
44
44
44
MnfId
Press
3.5
3.3
3.4
3.8
3.2
3.3
3.7
3.2
3.6
3.4
3.3
3.2
3.8
3.7
3.6
3.5
“aA"
3.7
3.3
3.6
3.2
3.5
3.4
3.4
0.64
Orf
No.
41
39
40
41
40
41
42
41
42
41
42
42
42
42
43
43
43
43
43
44
43
44
43
44
44
MnfId
Press
3.7
3.2
3.4
3.5
3.3
3.4
3.8
3.3
3.7
3.2
3.5
3.4
3.3
3.2
3.8
3.7
3.6
3.5
3.4
3.8
3.3
3.7
3.2
3.6
3.5
0.66
Orf
No.
41
39
40
41
39
40
41
40
41
42
41
42
41
42
42
42
42
43
43
43
43
44
43
44
43
44
MnfId
Press
3.8
3.3
3.5
3.6
3.2
3.4
3.5
3.2
3.4
3.8
3.3
3.7
3.2
3.5
3.4
3.3
3.2
3.8
3.7
3.6
3.5
3.4
3.8
3.3
3.7
3.2
3.6
0.68
Orf
No.
39
40
41
39
40
41
40
41
40
41
42
41
42
41
42
42
42
42
43
43
43
43
43
44
43
44
43
MnfId
Press
3.4
3.6
3.8
3.3
3.5
3.6
3.3
3.5
3.2
3.4
3.8
3.3
3.7
3.2
3.5
3.4
3.3
3.2
3.8
3.7
3.6
3.5
3.4
3.8
3.3
3.7
3.2
0.70
Orf
No.
38
39
40
39
40
41
39
40
41
40
41
40
41
42
41
42
41
42
42
42
42
43
43
43
43
43
44
43
MnfId
Press
3.2
3.5
3.7
3.3
3.6
3.7
3.2
3.4
3.6
3.3
3.5
3.2
3.4
3.8
3.3
3.6
3.2
3.5
3.4
3.3
3.2
3.8
3.7
3.6
3.5
3.4
3.8
3.3
0.72
Orf
No.
38
39
40
38
39
40
41
39
40
41
39
40
41
40
41
40
41
42
41
42
41
42
42
42
43
43
43
43
43
43
MnfId
Press
3.3
3.6
3.8
3.2
3.4
3.7
3.8
3.3
3.5
3.7
3.2
3.4
3.6
3.3
3.5
3.2
3.4
3.7
3.3
3.6
3.2
3.5
3.4
3.3
“a2~
3.8
3.7
3.6
3.5
3.4