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LDAP-IOM (01-22) 207733-A
Table 18. Inputs and Capacities by Elevation in US
Elevation
(Feet (Meters))
Unit Size
400
800
1200
Normal
Input
Thermal
Output
Capacity
Minimum
Input
Normal
Input
Thermal
Output
Capacity
Minimum
Input
Normal
Input
Thermal
Output
Capacity
Minimum
Input
BTUh
0–2000
(0–610)
400,000
332,000
300,000
800,000
664,000
400,000
1,200,000
996,000
400,000
2001–3000
(611–915)
376,000
312,080
282,000
752,000
624,160
376,000
1,128,000
936,240
376,000
3001–4000
(916–1220)
368,000
305,440
276,000
736,000
610,880
368,000
1,104,000
916,320
368,000
4001–5000
(1221–1525)
360,000
298,800
270,000
720,000
597,600
360,000
1,080,000
896,400
360,000
5001–6000
(1526–1830)
352,000
292,160
264,000
704,000
584,320
352,000
1,056,000
876,480
352,000
6001–7000
(1831–2135)
344,000
285,520
258,000
688,000
571,040
344,000
1,032,000
856,560
344,000
7001–8000
(2136–2440)
336,000
278,880
252,000
672,000
557,760
336,000
1,008,000
836,640
336,000
8001–9000
(2441–2745)
328,000
272,240
246,000
656,000
544,480
328,000
984,000
816,720
328,000
9001–10,000
(2746–3045)
320,000
265,600
240,000
640,000
531,200
320,000
960,000
796,800
320,000
ADJUSTMENTS—CONTINUED
Measure and Adjust Manifold (Outlet) Gas Pressure—Continued
Measure and Adjust Manifold Gas Pressure—Elevation >2,000 Feet (>610 Meters)—Continued
MAINTENANCE
The unit is designed to operate with a minimum of maintenance . However, to ensure long life and satisfactory
performance, routine service is recommended . When servicing, follow standard safety procedures and those specific
instructions and warnings in this manual .
⚠ DANGER ⚠
• If you turn OFF the electrical power supply, turn OFF the gas.
• To prevent injury or death due to electrocution or contact with moving parts, lock disconnect
switch open.
⚠ WARNING ⚠
• Eye protection is recommended when cleaning unit.
• When any service is completed, ensure that the unit is reassembled correctly so that no unsafe
conditions are created.
• When re-lighting, always follow the lighting instructions on the heater.
⚠ CAUTION ⚠
• If any of the original wire supplied with the appliance must be replaced, it must be replaced with
wiring material having a temperature rating of at least 105°C, except for limit control, flame rollout,
and sensor lead wires which must be rated at 150°C.
• If replacement parts are required, use only factory-authorized parts.