Installation Instructions - Johnson Controls YORK RTC Instrucciones De Instalación

Installation Instructions

General information
In the summer cycle, this accessory controls
the condensing pressure by varying air flow
in the outdoor coils. This air flow variation
keeps the condensing pressure constant
when outdoor temperatures are low. With
this accessory the outdoor air operating
limit is -10°C.
Operation
By means of the pressure detected by the
control unit through the analogical pressure
switches installed in the cooling circuit, and
carrying out the appropriate calculations in
accordance with the settings, this control unit
gives off an analogical signal that positions
the opening of the dampers in such a way
that the previously programmed set point
condensing pressure is maintained.
Programming and adjustment
Keys and display (description of the control
unit)
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1) Display:
- Displays the value of the pressure
switches.
- Displays the code of the alarms pro-
duced.
2) Decimal LED:
- Is lit when the value has a decimal
part.
3) OUT LED:
- Is lit constantly when the 0v output is
different.
- Flashes when the output is at the
maximum programmed value.
4) AUX LED:
- Is lit or flashes, depending upon the
operating mode selected.
5) key:
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- Displays and/or selects the set point
value.
- If pressed along with the
for 5 seconds, ØØ appears on the
display. Using the
select the access code to enter the
main programming mode, parameters
"Cxx".
6) key:
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- If pressed for 5 seconds, the basic
programming mode is accessed, pa-
rameters "Pxx".
- If an alarm is produced, pressing once
deactivates the acoustic signal. If
pressed a second time, the alarm is
reset.
7) key:
- In standby mode, displays pressure
switch 1 value.
- In programming mode, it is used to
move on to the next parameter and to
increase the values of same.
8) key:
- In standby mode, displays pressure
switch 2 value.
- In programming mode, it is used to
move on to the previous parameter
and to decrease the values of same.
Necessary settings
- Single compressor unit:
Parameter
CØØ
PØ1
CØ3
CØ4
CØ5
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C1Ø
C13
C14
C15
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C16
C19
C30
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Programming sequence
1.- Press
until "St1" appears on the display. After
displaying "St1" for one second, the
present "St1" value will appear.
2.- By means of the
change this value to the value indicated
in the above tables.
3.- Press
"St2" will appear on the display, but it
should not be programmed. Press
once again to exit the programming
mode.
4.- To program CØØ, press
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until "ØØ" appears on the display.
5.- By means of the
enter the password "77" to access
the "Cxx" parameters. Press
confirm.
6.- Use the
through the different "Cxx" parameters,
until reaching "CØØ".
7.- Press
8.- By means of the
key
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set the values indicated in the above
tables, as required.
and keys,
9.- Press
10.- Press
exit the programming mode.
11.- To program "PØ1", press
Value
St1 26
3
2
Ø
Ø%
1ØØ%
Ø
6
Ø
Ø.Ø
44.8
Ø
4
for 2 or more seconds,
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and
to confirm the new value.
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simultaneously for 5 seconds,
and
and keys to move
to view current value.
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and
to confirm the change.
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to save the changes and
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seconds, until "PØ1" appears on the
display.
12.- Press
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value.
13.- Use the
the value in accordance with the above
tables.
14.- Press ��� to confirm the change.
15.- Press
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exit the programming mode.
16.- To program the remaining "Cxx"
parameters, press
simultaneously for 5 seconds, until
"ØØ" appears on the display. Enter
the password "77" and press
confirm.
17.- By means of the
move through the different "Cxx" pa-
rameters, and then use
and validate the values and the
and keys to modify these param-
eters in accordance with the above
tables.
Horizontal air discharge as-
sembly
0.- Check to see the packing is not dam-
aged. Unblock the motor and make
sure the slits open and close correctly
by applying force.
1.- Disconnect power supply to the unit.
2.- Install the lower support supplied, as
in figure 1. Fasten the support with the
self-threading screws of the acces-
sory.
Cut four 400 mm. long strips of the 24
x 24 mm. gasket. Place on both verticle
sides of the damper and the panel to
avoid air leaks.
3.- Lean the dampers on the previously fit-
ted support, with the motor at the point
nearest the control panel (Fig. 2).
4.- Install the top support and fasten it to
the chassis of the unit by means of the
keys,
drilled holes and self-threading screws
supplied (Fig. 2).
5.- Fasten the dampers to the lower and
top supports with the self-threading
screws supplied (Fig. 2).
6.- Open the control panel and remove the
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roof cover.
7.- Fit the CP1 control unit in the DIN guide
and
on the X3 connecting strip side. On
models RTH, also install relay RRV1
(Fig. 3).
keys,
8.- Move contactors KM1 and KM2 to
attach the side auxiliary contacts sup-
to plied.
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9.- Screw the high pressure intake switch
on to the condensing unit output and
check for leaks. But first unscrew and
remove the plugs that protect same.
10.- Connect the pressure switch hose
keys, and fasten it by means of the clamps
supplied along with the existing wiring
cables.
11.- Insert the pressure switch hose through
the hole on the separator panel, and
install the 28 Ø wall hole guide sup-
for 5 plied.
to access the current
and keys to modify
to save these values and
and
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to
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and keys,
to access
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