45
SPAN
ZERO
4-20
mA
VAC
or
VDC
GND 0-5V
or
0-10V
1
2
3
4
5
6
ON
J4-1 or J4-4 + 24 VDC Supply Voltage
J4-2 or J4-5 (-)4 to 20 mA Current Loop Output
to RTU Open
Relative Humidity Sensor
(Polarized Male Connector)
C12756
Fig. 54 -- Duct Relative Humidity Sensor Typical Wiring
Humidistat:
Use of a field--supplied humidistat provides
the RTU Open controller insight to the relative humidity
in the space. The humidistat reads the RH level in the
space and compares it to its setpoint to operate a dry
contact. The humidistat is a dedicated input on the
configurable input 9 and tells the RTU Open controller
when the RH level is HIGH or LOW. The normal
condition for humidity is LOW. A normally open
humidistat is the factory default control for the Perfect
Humidity
t
system option.
To wire in the field:
S
J5--8 = 24 VAC source for dry contact
S
J5--7 = Signal input
Smoke Detector/Fire Shutdown (FSD) —
On 551J units equipped with factory--installed Smoke
Detector(s), the smoke detector controller implements the
unit shutdown through its NC contact set connected to the
unit’s CTB input. The FSD function is initiated via the
smoke detector’s Alarm NO contact set. The RTU Open
controller communicates the smoke detector’s tripped
status to the BAS building control. See Fig. 41 or Fig. 42
(RTU Open Controller wiring schematics).
The
Fire
Shutdown
Switch
configuration,
MENU
Config
Inputs
input 5
, identifies the normally
open status of this input when there is no fire alarm.
Connecting Discrete Inputs —
Filter Status:
The filter status accessory is a field--installed
accessory. This accessory detects plugged filters. When
installing this accessory, the unit must be configured for
filter status by setting
MENU
Config
Inputs
input 3, 5,
8, or 9
to Filter Status and normally open (N/O) or normally
closed (N/C). Input 8 or 9 is recommended for easy of
installation. Refer to Fig. 40 and Fig. 41 or Fig. 42 for wire
terminations at J5.
Fan Status:
The fan status accessory is a field--installed
accessory. This accessory detects when the indoor fan is
blowing air. When installing this accessory, the unit must
be
configured
for
fan
status
by
setting
MENU
Config
Inputs
input 3, 5, 8, or 9
to Fan
Status and normally open (N/O) or normally closed (N/C).
Input 8 or 9 is recommended for easy of installation. Refer
to Fig. 40 and Fig. 41 or Fig. 42 for wire terminations at J5.
Remote Occupancy:
The remote occupancy accessory is
a field--installed accessory. This accessory overrides the
unoccupied mode and puts the unit in occupied mode.
When installing this accessory, the unit must be
configured
for
remote
occupancy
by
setting
MENU
Config
Inputs
input 3, 5, 8, or 9
to Remote
Occupancy and normally open (N/O) or normally closed
(N/C).
Also set
MENU
Schedules
occupancy source
to DI
on/off. Input 8 or 9 is recommended for easy of
installation. Refer to Fig. 40 and Table 18 for wire
terminations at J5.
Power Exhaust (output):
The relay used by the RTU
Open controller board to control power exhaust is a dry
contact which means it does not have 24vac. This 24vac
must be connected to the relay to allow it to operate the
power exhaust relay in the PE accessory. A 24vac source
must be provided to J11--2 on the RTU Open controller
board. This can be provided by the unit’s transformer from
various sources. The “R” terminal on the unit’s central
terminal board (CTB) is a logical source. Refer to Fig. 40
and Fig. 41 or Fig. 42 for wire terminations at J11.
Содержание 551J Series
Страница 4: ...4 C160142 Fig 2 Dimensional Drawing Sizes 07 09 ...
Страница 5: ...5 C160143 Fig 2 Unit Dimensional Drawing Sizes 07 09 cont ...
Страница 6: ...6 C13302A Fig 3 Dimensional Drawing Sizes 11 and 12 ...
Страница 7: ...7 C13303A Fig 3 Unit Dimensional Drawing Sizes 11 and 12 cont ...
Страница 39: ...39 a551J 006 Fig 41 RTU Open Controller Wiring Diagram ...
Страница 40: ...40 a551J 007 Fig 42 Typical RTU Open Controller Wiring Diagram Wiring Diagram with Perfect Humidityt System ...
Страница 53: ...53 ...
