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Table 2 – Altitude Derate Multiplier for U.S.A.
ALTITUDE
FT.
M
0–2000
0−610
2001–3000
610−914
3001–4000
914−1219
4001–5000
1219−1524
5001–6000
1524−1829
6001–7000
1829−2134
7001–8000
2134−2438
8001–9000
2438−2743
9001–10,000
2743−3048
*Derate multiplier factors are based on midpoint altitude for altitude range.
ON/OFF Switch
1/2" NPT Inlet
1/8" NPT Inlet
Pressure Tap
Gas Valve without Tower Pressure Ports
MANIFOLD PRESSURE TAP
SET SCREW: 3/32" HEX HEAD
ACCEPTS 5/16" HOSE CONNECTION
1/2" NPT
INLET
INP
INLET PRESSURE
TAP SET SCREW:
3/32" HEX HEAD
ACCEPTS 5/16"
HOSE CONNECTION
1/8" NPT INLET
PRESSURE TAP
Representative drawing only, some models may vary in appearance.
1/2" NPT
INLET
1/8" NPT
INLET PRESSURE TAP
Representative drawing only, some models may vary in appearance.
Fig. 3 − Gas Valve with Tower Pressure Ports
8
PERCENT
DERATE
OF
MULTIPLIER
DERATE
FACTOR*
0
1.00
4−6
0.95
6−8
0.93
8−10
0.91
10−12
0.89
12−14
0.87
14−16
0.85
16−18
0.83
18−20
0.81
SINGLE-STAGE
Regulator Seal Cap
Regulator Adjustment
Regulator Seal Cap under Cap
1/2" NPT Outlet
1/8" NPT Manifold
Pressure Tap
A11153
1/2" NPT
OUTLET
OUTP
REGULATOR SEAL CAP
ON/OFF SWITCH
(REGULATOR ADJ.
UNDER CAP)
A170118
1/2" NPT
OUTLET
A170133
Specifications subject to change without notice.
THERMOSTAT SUBBASE
TERMINALS WITH
THERMOSTAT REMOVED
(ANITICIPATOR, CLOCK, ETC.,
MUST BE OUT OF CIRCUIT.)
HOOK-AROUND
AMMETER
R Y W G
10 TURNS
FROM UNIT 24-V
CONTROL TERMINALS
= 0.5 AMPS FOR THERMOSTAT
EXAMPLE: 5.0 AMPS ON AMMETER
ANTICIPATOR SETTING
10 TURNS AROUND JAWS
Fig. 4 − Amp. Draw Check with Ammeter
A96316
440 04 7101 09
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