Checklist - Carrier 58MXA Installation, Start-Up, And Operating Instructions Manual

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Fig. 44—Redundant Automatic Gas Valve
BURNER FLAME
MANIFOLD
Fig. 45—Burner Flame
EXAMPLE:
100,000 Btuh input furnace installed at 4300 ft.
Furnace Input Rate X
at Sea Level
100,000 X
-
BURNER
Derate Furnace Input Rate
Multiplier = at Installation
Factor Altitude
0.91 = 91,000
TABLE 10–ALTITUDE DERATE MULTIPLIER FOR
ALTITUDE
(FT)
0–2000
2001–3000
3001–4000
4001–5000
5001–6000
6001–7000
7001–8000
8001–9000
9001–10,000
* Derate multiplier factor is based on midpoint altitude for altitude range.
motor is disconnected, shut furnace down immediately. De-
termine reason pressure switch did not function properly and
correct condition.
5. Turn off 115-v power to furnace.
6. Reconnect inducer motor leads, reinstall main furnace door,
and turn on 115-v power supply.
A00238
Step 6—Checklist
1. Put away tools and instruments. Clean up debris.
2. Verify manual reset switch has continuity.
3. Verify that blower and control access doors are properly
installed.
4. Cycle test furnace with room thermostat.
5. Check operation of accessories per manufacturer's instruc-
tions.
6. Review User's Guide with owner.
7. Leave literature packet near furnace.
A89020
42
U.S.A.
PERCENT DERATE MULTIPLIER
OF DERATE FACTOR FOR U.S.A.*
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