YORK INTERNATIONAL
12
OFFSET (°F)
= (5 – 2)(10)
8
= (3)(10)
8
= 30
8
SETPOINT (°F) = 40 + 3.8
= 43.8°F
0-20mA - As shown in Fig. 19, connect input to
Microboard J22-4 (signal) and J22-5 (Gnd). A 0mA sig-
nal produces a 0°F offset. A 20mA signal produces the
maximum allowed offset (10 or 20°F above the local
setpoint value). The setpoint is changed linearly between
these extremes as the input varies over the range of 0-
20mA. This input will only be accepted when “Ana-
log” Remote Mode is selected, the “Remote Ana-
log Input Range” setpoint is set for “0-10VDC” and
Microboard Program Jumper J24 has been placed on
pins 1 and 2. Calculate the setpoint for various inputs as
follows:
OFFSET (°F) = (MA)(REMOTE RESET TEMP RANGE)
20
SETPOINT(°F) = LOCAL SE OFFSET
For example, if the input is 8mA, the Remote Reset
Temp Range Setpoint is programmed for 10°F and the
Local Leaving Chilled Liquid Temperature setpoint is
programmed for 40°F, the setpoint would be set to 44°F
as follows:
SIGNAL
COMMON
5
4
+
J22
FIG. 19 – REMOTE LEAVING CHILLED LIQUID TEMP.
SETPOINT WITH 0-20MA OR 4-20MA
SIGNAL
LD04501
OFFSET (°F)
= (8)(10)
20
= (80)
20
= 4°F
SETPOINT (°F) = 40 + 4
= 44°F
4-20mA - As shown in Fig. 19, connect input to Micro
Board J22-4 (signal) and J22-5 (Gnd.). A 4mA signal
produces a 0°F offset. A 20mA signal produces the
maximum allowed offset (10 or 20°F above the Local
setpoint Value). The setpoint is changed linearly between
these extremes as the input varies over the range of 0-
20mA. This input will only be accepted when “Ana-
log” Remote Mode is selected, the “Remote Ana-
log Input Range” setpoint is set for “2-10VDC” and
Microboard Program Jumper JP24 has been placed on
pins 1 and 2. Calculate the setpoint for various inputs as
follows:
OFFSET(°F) =
(MA – 4)(REMOTE TEMP. RESET RANGE)
16
SETPOINT(°F) = LOCAL SE OFFSET
For example, if input is 8mA, and the Remote Reset
Temp. Range setpoint is programmed for 10°F and the
Local Leaving Chilled Liquid Temperature setpoint is
programmed for 40°F, the setpoint would be set to 42.5°F
as follows:
OFFSET (°F)
= (8 – 4)(10)
16
= (4)(10)
16
= 40
16
= 2.5°F
SETPOINT (°F) = 40 + 2.5
= 42.5°F
