Carrier 58ZAV Furnace User Manual


  Open as PDF
of 24
 
→Table 7—Model 58ZAV Orifice Size† and Manifold Pressure for Correct Input (Continued)
(Tabulated Data Based on 23,000 BTUH Per Burner, Derated 4 percent per 1000 Ft Above Sea Level)*
ALTITUDE
RANGE
(FT)
AVG GAS
HEAT VALUE
AT ALTITUDE
(BTU/CU FT)
SPECIFIC GRAVITY OF NATURAL GAS
0.58 0.60 0.62 0.64 0.66
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
U.S.A. Only
700 43 3.7 43 3.8 42 3.2 42 3.3 42 3.4
725 43 3.4 43 3.6 43 3.7 43 3.8 42 3.2
750 43 3.2 43 3.3 43 3.4 43 3.5 43 3.6
775 43 3.0 43 3.1 43 3.2 43 3.3 43 3.4
5001 800 43 2.8 43 2.9 43 3.0 43 3.1 43 3.2
825 43 2.7 43 2.7 43 2.8 43 2.9 43 3.0
to 850 43 2.5 43 2.6 43 2.7 43 2.8 43 2.8
875 43 2.4 43 2.4 43 2.5 43 2.6 43 2.7
6000 900 43 2.2 43 2.3 43 2.4 43 2.5 43 2.5
925 43 2.1 43 2.2 43 2.3 43 2.3 43 2.4
950 48 3.8 43 2.1 43 2.1 43 2.2 43 2.3
975 48 3.6 48 3.7 43 2.0 43 2.1 43 2.2
1000 48 3.4 48 3.5 48 3.6 48 3.7 43 2.1
ALTITUDE
RANGE
(FT)
AVG GAS
HEAT VALUE
AT ALTITUDE
(BTU/CU FT)
SPECIFIC GRAVITY OF NATURAL GAS
0.58 0.60 0.62 0.64 0.66
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
U.S.A. Only
650 43 3.7 43 3.8 42 3.2 42 3.3 42 3.5
675 43 3.4 43 3.5 43 3.7 43 3.8 42 3.2
700 43 3.2 43 3.3 43 3.4 43 3.5 43 3.6
6001 725 43 3.0 43 3.1 43 3.2 43 3.3 43 3.4
750 43 2.8 43 2.9 43 3.0 43 3.1 43 3.2
to 775 43 2.6 43 2.7 43 2.8 43 2.9 43 3.0
800 43 2.4 43 2.5 43 2.6 43 2.7 43 2.8
7000 825 43 2.3 43 2.4 43 2.5 43 2.5 43 2.6
850 43 2.2 43 2.2 43 2.3 43 2.4 43 2.5
875 43 2.0 43 2.1 43 2.2 43 2.3 43 2.3
ALTITUDE
RANGE
(FT)
AVG GAS
HEAT VALUE
AT ALTITUDE
(BTU/CU FT)
SPECIFIC GRAVITY OF NATURAL GAS
0.58 0.60 0.62 0.64 0.66
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
U.S.A. Only
625 43 3.4 43 3.6 43 3.7 43 3.8 42 3.2
650 43 3.2 43 3.3 43 3.4 43 3.5 43 3.6
675 43 3.0 43 3.1 43 3.2 43 3.3 43 3.4
7001 700 43 2.7 43 2.8 43 2.9 43 3.0 43 3.1
725 43 2.6 43 2.6 43 2.7 43 2.8 43 2.9
to 750 43 2.4 43 2.5 43 2.6 43 2.6 43 2.7
775 43 2.2 43 2.3 43 2.4 43 2.5 43 2.5
8000 800 43 2.1 43 2.2 43 2.2 43 2.3 43 2.4
825 48 3.7 43 2.0 43 2.1 43 2.2 43 2.2
850 48 3.5 48 3.6 48 3.7 43 2.1 43 2.1
ALTITUDE
RANGE
(FT)
AVG GAS
HEAT VALUE
AT ALTITUDE
(BTU/CU FT)
SPECIFIC GRAVITY OF NATURAL GAS
0.58 0.60 0.62 0.64 0.66
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
U.S.A. Only
600 43 3.2 43 3.3 43 3.4 43 3.5 43 3.6
625 43 3.0 43 3.1 43 3.2 43 3.3 43 3.4
8001 650 43 2.7 43 2.8 43 2.9 43 3.0 43 3.1
675 43 2.5 43 2.6 43 2.7 43 2.8 43 2.9
to 700 43 2.4 43 2.4 43 2.5 43 2.6 43 2.7
725 43 2.2 43 2.3 43 2.3 43 2.4 43 2.5
9000 750 43 2.0 43 2.1 43 2.2 43 2.3 43 2.3
775 48 3.6 48 3.7 43 2.1 43 2.1 43 2.2
800 48 3.4 48 3.5 48 3.6 48 3.7 43 2.0
* For size 135-20 only, input is 22,500 Btuh per burner. Deduct 0.1-in. wc from manifold pressure shown in table. Change orifice size if manifold pressure falls below
3.2-in. wc on altitudes up to 2000 ft, otherwise change orifice size if manifold pressure falls below 2.0-in. wc.
† Orifice sizes shown in BOLD are factory installed.
17
 previous next