This makes the equipment susceptible to operation
problems or mis-wiring which may cause damage to the
printer or the microprocessor board. YORK assumes no
responsibility for assistance or damage in the use of
non-specified printers.
11.5 Warranty
YORK assumes no warranty responsibility in the use of
the printer. This includes damages to the printer and the
microprocessor board or unit operation problems which
may result.
11.6 Obtaining a Printout
A printout can be obtained by pressing the 'PRINT' key
on the keypad and then pressing either the 'OPER
DATA' key or 'HISTORY' key.
12
BAS/EMS TEMPERATURE RESET
USING A VOLTAGE OR CURRENT
SIGNAL
If the EMS-PWM feature has been activated,
no message REMOTE TEMP RESET INPUT
is visible under the OPTION key the following
feature is disabled. Contact Johnson Controls
York Product service if you require the
following feature.
The chilled liquid setpoint can be reset Upwards from
the manually entered setpoint by using a remote 0 -
10 Vdc or 2 - 10 Vdc or 0 - 20 ma or a 4 - 20 mA signal
connected to terminal block -XTBC1 terminals A- and
A+.
Whenever a reset is called for by the remote signal, the
change may be viewed by pressing the Setpoints key
twice. The new value will be displayed as 'REM C SP =
XXX °C'. The analogue input is only read for a fixed
interval. This is normally factory set to 5 minutes.
12.1 0-10 Vdc Remote Signal
Jumper JP on the I/O board must be set to 10 V.
To calculate the reset chilled liquid setpoint for values
between 0 Vdc and 10 Vdc use the following formula:
Setpoint = Local Chilled Liquid Se °C Reset
°C Reset = (DC voltage signal) x *Max Reset Value)
10
Example:
Local Chilled Liquid Setpoint = 6.4°C
*Max Reset Value = 10°C
Input Signal = 6 Vdc
°Reset = (6 Vdc x 10. 0 °C) = 6.0 °C Reset
10
New Setpoint = 6.4 °C + 6.0 °C = 12.4 °C
12.2 2-10 Vdc Remote Signal
Jumper JP on the I/O board must be set to 10 V.
To calculate the reset chilled liquid setpoint for values
between 2 Vdc and 10Vdc use the following formula:
Setpoint = Local Chilled Liquid Se °C Reset
°C Reset = ((DC voltage signal - 2) x *Max Reset Value)
8
Example:
Local Chilled Liquid Setpoint = 6.9 °C
*Max Reset Value = 10 °C
Input Signal = 4 Vdc
°C Reset = ((4VDC - 2) x 10. 0 °C) = 2.5 °C Reset
8
New Setpoint = 6.9 °C + 2.5 °C = 9.4 °C
12.3 0-20 mA Remote Signal
Jumper JP on the I/O board must be set to 20 mA.
To calculate the chilled liquid setpoint for values
between 0 mA and 20 mA use the following formula:
Setpoint = Local Chilled Liquid Se °C Reset
°C Reset = (mA signal x *Max Reset Value)
20
Example:
Local Chilled Liquid Setpoint = 6.4 °C
*Max Reset Value = 5.0 °C
Input Signal = 10 mA
°C Reset = (10 mA x 5.0 °C) = 2.5 °C Reset
20
New Setpoint = 6.4 °C + 2.5 °C = 8.9 °C
1
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38
Form 201.26.OI1(11/09)
