TEMPERATURE AND HUMIDITY CONTROLLER
FOR ONE-BATTERY AIR HANDLING UNIT
OPTIONAL
BUS
C
XTU 614
C1 Eng.
• Temperature & relative humidity control in air handling units
• 24-hour, 7-day, and annual programming
• Power supply 24 V~
DIN rail mounting
,
• Communication systems:
– C-Bus: XTU 614 is already wired for Telemanagement
To enable Telemanagement use C-Bus Plug-in, model ACB 460 C1 or later,
to be ordered separately as an accessory.
1. APPLICATION
XTU 614 is designed for temperature and humidity control in air handling units composed of:
• 1 battery for hot/chilled water or vapour with 3-wire modulating controll
or
or
• 1 adiabatic humidifying unit with On-Off control
or
• 1 air mixing unit with 0...10 V– air damper actuators
or 1 heat regenerator with 0...10 V- or On-Off control (CSV 304 converter).
The controller can be included in a Telemanagement system through the C-Bus connection.
2. FEATURES
The main features of XTU 614 are as follows:
• One 3-wire modulating output, or 2-stage On-Off (two equal loads) or 3-stage (two unequal loads) outputs,
configurable for:
– winter and summer room temperature control with optional summer external compensation; flow limits to
prevent cold drafts, hot air stratification and condensing in the air ducts.
– flow temperature control (heating or cooling) with optional winter and summer compensation
– pre-heating temperature control according to room temperature and humidity
– battery frost protection temperature control
• One On-off output for winter adiabatic humidifying unit control
• One 0...10 V- progressive output, configurable forr:
– control of air mixing according to temperature, with minimum limit opening external air
– external air control for room dehumidification with compensation of dew point temperature on glass windows
and with minimum limit external air
– On-Off control heat regenerator according to room-outside temperature comparison
– adjustment vapour humidifier by means of 0...10 V- control
• One 3-wire On-Off output for manual or automatic season switching.
• Two On-Off outputs for control fan and pump according to timed program in use
• Winter battery frost protection temperature control
• Programming by means of 25 24-hour programs, five 7-day programs, and 25 annual period programs
• Variation of temp. and humidity set-points by remote control
• Alarms for short and open sensor circuits and for system and equipment malfunction.
• Enabled for data transmission via C-Bus with local PCs or remote Telemanagement PC.
To enable data transmission and Telemanagement use C-Bus Plug-in type ACB 460 C1 or later
To communicate locally with a PC use test Plug-in ACX 232
3. ACCESSORIES
No.
Description
1
Discharge air temperature duct sensor
1
Outside air temperature sensor - duct type
or
wall type
1
Extract air temperature sensor - duct type
or
room type
1
Pre-heating temperature sensor - duct type
or
dew point
1
Room relative humidity and temperature sensor
or duct relative humidity sensor
or duct relative humidity sensor (swimming pools)
1
Battery frost protection temp. sensor - cable type
or
immersion type
1
0...10 V – to 2-stage On-Off converter
1
Temperature set-point adjuster
1
Relative humidity set-point adjuster
1
Outside air minimum distance positioner
Accessories for Telemanagement
1
Plug-in for communicating via C-Bus
We reserve the right to make changes without notice
COSTER
electric batteries with 1-,2-, or 3-stage On-Off control
direct expansion batteries with 1- or 2-stage On-Off control
vapour-operated, with 0...10 V- control (alternative to air damper control)
STA 010
STA 001
SAE 001
STA 010
SAB 010
STA 010
STV 010
SAU 012
SUR 012
SUR 051
SAF 010
SIH 010
CSV 304
CDB 100
CDB 200
PCS 04
ACB 460 C1
E 134 - XTU 614
Type
Application Range
0...60 °C
–30...+40 °C
–30...+40 °C
0...40 °C
0...40 °C
0...40 °C
0...40 °C
0...40 °C ; 20...80 %
20...80 %
10...90 %
0...40 °C
0...40 °C
–
± 5 °C
± 10 %
–
–
C1 Eng. 22.11.10 AM REV. 03
E 134
22.11.10 AM
REV.03
Code
Data sheet
Sensing element t°
NTC 10 kΩ
B1
NTC
1 kΩ
B2
NTC
1 kΩ
B2
NTC 10 kΩ
B3
NTC 10 kΩ
B3
NTC 10 kΩ
B4
NTC 10 kΩ
B4
NTC 10 kΩ
B3-B6
–
B6
–
B6
NTC 10 kΩ
B7
NTC 10 kΩ
B7
–
Y
–
Rt°
–
RH
–
Rs
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
1
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