68
Table 19 – Altitude Derate Multiplier for U.S.A.
ALTITUDE
PERCENT
OF
DERATE
DERATE
MULTIPLIER
FACTOR*
FT.
M
0–2000
0---610
0
1.00
2001–3000
610---914
4---6
0.95
3001–4000
914---1219
6---8
0.93
4001–5000
1219---1524
8---10
0.91
5001–6000
1524---1829
10---12
0.89
6001–7000
1829---2134
12---14
0.87
7001–8000
2134---2438
14---16
0.85
8001–9000
2438---2743
16---18
0.83
9001–10,000
2743---3048
18---20
0.81
*Derate multiplier factors are based on midpoint altitude for altitude range.
ON/OFF Switch
Regulator Seal Cap
Regulator Adjustment
Regulator Seal Cap under Cap
1/2” NPT Outlet
1/8” NPT Manifold
Pressure Tap
1/8” NPT Inlet
Pressure Tap
1/2” NPT Inlet
SINGLE-STAGE
A11153
Fig. 58 -- Gas Valve
BURNER
ORIFICE
A93059
Fig. 59 -- Orifice Hole
R Y W G
10 TURNS
THERMOSTAT SUBBASE
TERMINALS WITH
THERMOSTAT REMOVED
(ANITICIPATOR, CLOCK, ETC.,
MUST BE OUT OF CIRCUIT.)
HOOK-AROUND
AMMETER
EXAMPLE: 5.0 AMPS ON AMMETER
10 TURNS AROUND JAWS
= 0.5 AMPS FOR THERMOSTAT
ANTICIPATOR SETTING
FROM UNIT 24-V
CONTROL TERMINALS
A96316
Fig. 60 -- Amp. Draw Check with Ammeter
59SC
2C