YORK INTERNATIONAL 61
FORM 150.40-NM25
Pages 63, 64 & 65 show a listing of each cooling range
code along with the temperatures at which each stage
loads and unloads.
C. Determine whether the “Desired LWT Setpoint” falls
into the range from –9.9° to 0°C or 0° to 9.9°C.
1. If the “Desired LWT Setpoint” falls into the tempera-
ture range from –9.9° to 0°C, place SW1 on the
Micro Logic Board to the OFF position (See Page
67). This places a minus sign in front of the set-
point dialed into the Setpoint switches.
2. If the “Desired LWT Setpoint” falls into the tempera-
ture range from 0° to 9.9°C, place SW1 on the Mi-
crologic Board to the ON position (See Fig. 51).
D. Set the two Setpoint switches to the “Desired LWT
Setpoint” selected in Step B.
i.e.: 4,4 = 4.4°C from Step B. SW1 on the Micro Logic
Board is ON (Step B). (See Fig. 47.)
DUAL CIRCUIT UNITS
FIG. 49 – SELECT DATA DISPLAY SWITCHES SET AT 0,5
G.See pages 63-65 for determining loading and unload-
ing points.
FIG. 47 – LWT SETPOINT SET AT 4,4 (4.4°C)
E. Set the Cooling Range Switch to the coded number
which represents the desired cooling range selected
in Step B.
i.e.: Code “3” = ± 0.84°C from Step B. (See Fig. 48)
FIG. 48 – COOLING RANGE SWITCH SET AT 3 (0.84°C)
F. Verify the setpoint by placing the Display Select
Switches to 0,5. The setpoint displayed will equal that
set in Step D.
i.e.: 4.4 will be displayed (from Step D) if the Display
Select Switches are set to 0,5. (See Fig. 49.)
LD01877
LD01878
LD01876
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