FORM 150.44-NM4
83
YORK INTERNATIONAL
this option is installed, is 20°F. This is due to the elec-
tronics limitation of maximum 11 sec. pulse. If a greater
than 20°F offset is required, a user supplied PWM sig-
nal of up to 21 sec. is needed and the Remote Reset
Option cannot be installed.
The Remote Reset Option P/N 471-01232-181 consists
of a Remote Reset printed circuit board, a mounting
bracket and associated wiring. Each of the 3 signal
types will require individual jumpering of the printed
circuit board. This will be discussed in the following
text.
0-10 VDC
Jumpers JU2 and JU4 must be IN. All other jumpers
should be OUT. Program the REMOTE TEMP
SETPOINT RANGE (page 64) for 40°F which will al-
low a 20°F offset with an input of 10 VDC. The tem-
perature will be offset linearly according to the voltage
(0-10 VDC) applied.
The 0-10 VDC signal should be connected to the +
and terminals on the TB3 Terminal Block at the right
of the Microprocessor Board. Be sure polarity is cor-
rect.
CAUTION: THE 0-10 VDC INPUT SIGNAL WIRING
MUST NOT BE EARTH GROUNDED!
4-20mA
Jumpers JU3 and JU5 must be IN. All other jumpers
should be OUT. Program the REMOTE TEMP
SETPOINT RANGE (page 64) for 40°F which will al-
low a 20°F offset with an input of 20mA. There will be
no offset with an input of 4mA. The temperature will be
offset linearly according to the current (4-20mA) ap-
plied.
The 4-20mA input signal should be connected to the +
and terminals on the TB3 Terminal Block at the right of
the Microprocessor Board. Be sure polarity is correct.
CAUTION: THE 4-20mA INPUT SIGNAL WIRING
MUST NOT BE EARTH GROUNDED!
Dry Contact
A dry contact may also be used to offset temperature.
This allows a single offset whenever the contact is
closed. The offset is determined by the adjustment of
the R11 potentiometer on the Remote Reset Board.
Adjust the potentiometer as needed to obtain the de-
sired offset.
Jumper JU1 must be IN. All other jumpers must be OUT.
Program the REMOTE RESET TEMP SETPOINT
RANGE (page 64) for 40°F which will allow the R11 pot
to be adjusted for an offset of as much as 20°F when
the contact is closed.
The dry contact should be connected directly to the P1-1
and P1-2 terminals on the Remote Reset Board (Fig. 36).
NOTE: The coil of the controls used for reset must be
suppressed. Use YORK P/N 031-00808-000
suppressor.
NOTE: Remote Setpoint Reset will not operate when
a Remote Control Center Option is connected
to the micro panel. The Remote Control Cen-
ter will always determine the setpoint.
CAUTION: J1 & TB1 wiring MUST be disconnected
from the Remote Reset/BAS Board, if no
signal (4-20mA or 0-10 VDC) is connected.
Failure to do this will cause a setpoint off-
set of an undetermined amount.
LD02017
FIG. 36
REMOTE RESET BOARD