Trane 4YCA4024A1060A, Руководство по установке

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18 88-4YCA4001-1A-EN
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Low voltage control wiring should not be run in conduit
with power wiring unless Class 1 wire of proper voltage
rating is used. Route the thermostat cable or equivalent
single leads of No. 18 AWG colored wire from the
thermostat subbase terminals through the rubber
grommet on the unit. See
“Step 2 — Determine Unit
Clearances,” p. 5 for the control entry (24V Entry)
location. Make connections as shown on Table 9, p. 17 .
Do not short thermostat wires since this will damage
the control transformer.
Refer to the table below for recommended wire sizes
and lengths for installing the unit thermostat. The total
resistance of these low voltage wires must not exceed
one (1) ohm. Any resistance in excess of 1 ohm may
cause the control to malfunction because of the
excessive voltage drop.
Table 10. Thermostat Wire Size and Maximum
Length
Wire Size
Maximum Length (Ft)
18 75
16 125
14 200
IIm mp po orrtta an ntt:: Upon completion of wiring, check all
electrical connections, including factory
wiring within the unit, and make sure all
connections are tight. Replace and secure
all electrical box covers and access panels
before leaving the unit or turning on the
power to the unit.
H Hiig gh h A Allttiittu ud de e IIn nsstta alllla attiio on n
Input ratings (BTUH) of these furnaces are based on
sea level operation and should not be changed at
elevations up to 2000 ft. If the unit installation is from
2000 to 8000 feet elevation, then change the burner
orifices to the size listed in
Table 11, p. 18 . Refer to
Table 12, p. 18 for orifice part numbers.
Table 11. Orifice Twist Drill Size
Orifice Twist
Drill Size if
Installed at Sea
Level
Altitude Above Sea Level and Orifice Change Required for that Elevation
2000 3000 4000 5000 6000 7000 8000
32 33 34 35 35 36 36 37
33 35 35 36 36 37 38 38
37 38 39 39 40 41 42 42
49 50 50 50 51 51 51 52
52 52 53 53 53 53 53 54
From National Fuel Gas Code — Table F-4
Table 12. Orifice Part Numbers
Drill Size Part Number Drill Size Part Number
32 ORF01307 41 ORF01413
33 ORF0134 42 ORF01410
34 ORF01335 49 ORF01333
35 ORF01407 50 ORF01332
36 ORF01408 51 ORF01336
37 ORF01406 52 ORF01331
38 ORF01306 53 ORF01411
39 ORF01409 54 ORF01412
40 ORF01336
S Stte ep p 4 4 — — U Un niitt IIn nsstta alllla attiio on n