Reznor LDAP, Installation Operation & Maintenance

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36 LDAP-IOM (01-22) 207733-A
Table 17. Required Manifold (Outlet) Gas Pressure
Elevation Single-Stage and Two-Stage High-Fire Two-Stage Low-Fire
Feet Meters
Natural Gas Propane Natural Gas Propane
Manifold Pressure (IN WC)
US
0–2000 0–610 3 .5 10 .0 1 .8 5 .6
2001–3000 611–915 3 .1 8 .8 1 .6 5 .0
3001–4000 916–1220 3 .0 8 .5 1 .5 4 .8
4001- 5000 1221–1525 2 .8 8 .1 1 .5 4 .6
5001–6000 1526–1830 2 .7 7 .7 1 .4 4 .4
6001–7000 1831–2135 2 .6 7 .4 1 .3 4 .2
7001–8000 2136–2440 2 .5 7 .1 1 .3 4 .0
8001–9000 2441–2745 2 .4 6 .7 1 .2 3 .8
9001–10,000 2746–3045 2 .4 6 .7 1 .3 3 .6
ADJUSTMENTS—CONTINUED
Measure and Adjust Manifold (Outlet) Gas Pressure—Continued
Measure and Adjust Manifold Gas Pressure—Elevation
≤
2,000 Feet (
≤
610 Meters)—Continued
Figure 18. Gas Valves
⚠ CAUTION ⚠
DO NOT bottom out the gas valve regulator screw. This can result in excessive overfire and heat
exchanger failure due to unregulated manifold pressure.
5 . If manometer reading does not indicate that valve outlet pressure is in accordance with Table 17 , remove cap
from regulator screw(s) (see
Figure 18
) and adjust pressure by turning regulator screw IN (clockwise) to increase
pressure or OUT (counterclockwise) to decrease pressure .
6 . When manometer reading indicates that outlet pressure is in accordance with
Table 17
, disconnect manometer
and install cap(s) on regulator screw(s) .
SINGLE-STAGE VALVE
1/8-INCH INLET
PRESSURE TAP
1/8-INCH OUTLET
PRESSURE TAP
1/8-INCH OUTLET
PRESSURE TAP
TWO-STAGE VALVE
1/8-INCH INLET
PRESSURE TAP
HIGH FIRE
REGULATOR
ADJUSTING
SCREW
LOW FIRE
REGULATOR
ADJUSTING
SCREW
REGULATOR
ADJUSTING
SCREW