Altitude Derate Multiplier For U.s.a - Carrier 59SP2A Installation, Start-Up, Operating And Service And Maintenance Instructions

e. Determine reason low pressure switch did not function
properly and correct condition.
f. Turn off 115- -v power to furnace.
g. Reconnect inducer motor wires, replace door, and turn on
115- -v power.
h. Blower will run for 90 sec before beginning the call for
heat again.
i. Furnace should ignite normally.
Checklist
1. Put away tools and instruments. Clean up debris.
2. Verify that the jumper is removed from the TEST/TWIN
terminal. Verify that there is nothing plugged into the PLT
connector. (Note: If there is a jumper connector plugged
into PLT, remove it and discard.) See Fig. 38.
3. Verify that the Blower/Heat Off Delay jumpers are set as
desired. See Fig. 38 and 72.
4. Verify that the blower (lower door in upflow position) and
control ("Main" or upper door in upflow position) doors are
properly installed.
5. Verify that the Status LED glows. If not, check that the
power supply is energized and that the blower door is
secure. See Fig. 63 to interpret diagnostic codes.
6. Cycle test furnace with room thermostat to be sure that it
operates properly with the room thermostat. Check all
modes including Heat, Cool and Fan.
7. Check operation of accessories
instructions.
8. Review Owner's Manual with owner.
9. Attach entire literature packet to furnace.
Table 19 – 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.
SINGLE-STAGE
ON/OFF Switch
1/2" NPT Inlet
1/8" NPT Inlet
Pressure Tap
Representative drawing only, some models may vary in appearance.
Fig. 59 - - Gas Valve without Tower Pressure Ports
per manufacturer's
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
Regulator Seal Cap
Regulator Adjustment
Regulator Seal Cap under Cap
1/2" NPT Outlet
1/8" NPT Manifold
Pressure Tap
A11153
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.
Fig. 60 - - Gas Valve with Tower Pressure Ports
Fig. 61 - - Orifice Hole
THERMOSTAT SUBBASE
TERMINALS WITH
THERMOSTAT REMOVED
(ANITICIPATOR, CLOCK, ETC.,
MUST BE OUT OF CIRCUIT.)
R Y W G
10 TURNS
FROM UNIT 24-V
CONTROL TERMINALS
EXAMPLE: 5.0 AMPS ON AMMETER
10 TURNS AROUND JAWS
Fig. 62 - - Amp. Draw Check with Ammeter
68
1/2" NPT
OUTLET
OUTP
REGULATOR SEAL CAP
ON/OFF SWITCH
(REGULATOR ADJ.
UNDER CAP)
A170118
BURNER
ORIFICE
A93059
HOOK-AROUND
AMMETER
= 0.5 AMPS FOR THERMOSTAT
ANTICIPATOR SETTING
A96316