Johnson Controls A419 Series, Технический бюллетень продукции

Страница: 7 / 12

A419 Series Electronic Temperature Controls with Display and NEMA 1 or NEMA 4X Watertight Enclosures
Product/Technical Bulletin 7
Adjustments
This section provides instructions for setting up and
adjusting the A419 controls using the jumpers and
touchpad.
Positioning the Jumpers
The P5 Jumper Pin Block has a single set of jumper
pins and is used to lock or unlock the touchpad. The
P4 Jumper Pin Block has two sets of jumper pins.
The top set of pins at P4, labeled JUMP1, is used to
set the control for Heating or Cooling mode. The
bottom set of pins, labeled JUMP2, is used to establish
Setpoint at cut-in or at cutout. See Figure 12.
To position a jumper in the Installed position, place the
jumper on both pins. To position a jumper in the
Removed position, place the jumper on only one pin.
(Save the jumper in case it is required in the future.)
See Figure 12.
Position the jumpers as follows. Refer to Figure 12,
Figure 13, and Table 2.
1. Verify that all power sources to the A419 control
have been disconnected.
2. Remove the control’s cover by loosening the four
captive cover screws.
3. Position the jumpers to set Cooling/Heating,
Setpoint, and Touchpad Lock functions.
4. Replace the cover and fasten in place with the
four screws.
5. Restore power to the control.
IMPORTANT: Verify that the Cooling/Heating
jumper is positioned properly before powering the
A419 control, to ensure that the relay operates as
intended. See Figure 13 and Table 2.
Jumper
Pins
Removed
(Jumper Positioned on One Pin)
Installed
(Jumper Positioned on Both Pins)
=
=
Figure 12: Positioning the Jumpers
P5
P4
Touchpad
Locked
Heating Mode
Cut-in at Setpoint
Heating Mode
Cutout at Setpoint
Cooling Mode
Cutout at Setpoint
Cooling Mode
Cut-in at Setpoint
JUMP2
Figure 13: Jumper Positions and Control Settings
Table 2: Jumper Designations, Jumper Positions and Control Settings
Function
Jumper Pins Designation
on Control
Setting
Jumper
Position* Factory Default Setting
(and Jumper Position)
Cooling Removed
Operating Mode
Cooling/Heating
JUMP1
(Top Pair of Pins on Block P4)
Heating Installed
Cooling
(Removed position)
At Cut-in Removed
Setpoint
JUMP2
(Bottom Pair of Pins on Block P4)
At Cut-out Installed
Cut-in
(Removed Position)
Locked Removed
Touchpad Lock P5 -Touchpad Unlock
Unlocked Installed
Unlocked
(Installed Position)
Note: The touchpad cannot be unlocked without a jumper. Do not discard any jumpers in case they are required in the
future.