Coster DTU 644, Руководство пользователя

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COSTER
TEMPERATURE AND HUMIDITY CONTROLLER
FOR TWO-BATTERY AIR HANDLING UNIT
DTU 644
Eng. C2
• Temperature and relative humidity control in air handling units
• Communication systems:
– telemanagement C-Bus
• Power supply 24 V~ , DIN rail mounting
1. APPLICATION
DTU 644 is designed for temperature and humidity control in air handling units composed of:
• 2 hot/chilled water or vapor batteries with 3-wire modulating control
or electric batteries with 1-,2-, or 3-stage On-Off control
or direct expansion batteries with 1- or 2-stage On-Off control
• 1 adiabatic humidifying unit with On-off control
or vapor-operated, with 3-wire modulating control, or 1- or 2-stage On-Off co
or vapor-operated, with 0...10 V– control (alternative to air damper control)
• 1 air mixing unit with 0...10 V- air damper actuators
or 1 heat recuperator with 0...10 V- or On-Off control (CSV 304 converter).
The equipment can be included in a Telemanagement system through the C-Bus connection.
2. FEATURES
The main features of DTU 644 are as follows:
• Three 3-wire modulating outputs or 2-stage On-off (two equal loads) or 3-stage (two unequal loads) outputs,
configurable for:
– room temperature control (heating or cooling) with summer external compensation if desired, minimum
and maximum flow limits to prevent cold drafts, hot air stratification and condensing in the air ducts.
– flow temperature control (heating or cooling) with winter and summer compensation if desired
– pre-heating temperature control at variable values according to room temperature and humidity
– room relative humidity control – humidifying (flow limits, alternative to enthalpic comparison, if desired) and
dehumidifying
• 1 0...10 V– progressive output, configurable for:
– air mixing control based on temperature or enthalpic comparison, with minimum external air limit
– external air control for room dehumidification with compensation of dew temperature on glass windows and
with minimum external air limit
– heat recuperator On-Off control according to room-external temperature comparison
– vapor-operated humidifier setting by means of a 0...10 V– control
• Manual or automatic controller function seasonal switching.
• Remote-controlled temperature and humidity setting adjustment
• Alarms for short and open detector circuits and for system and equipment malfunction.
C BUS
3. ACCESSORIES
No. Description Type Application range Sensing Code Data
element t
°
sheet
1 Duct flow air temperature detector STA 010 0…60
°
C NTC 10 k
Ω
B1 –
1 Duct outside air temperature detector STA 001 –30…+40
°
C NTC 1 k
Ω
B2 –
or wall outside air temperature detector SAE 001 –30…+40
°
C NTC 1 k
Ω
B2 –
1 Duct extract air temperature detector STA 010 0…40
°
C NTC 10 k
Ω
B3 –
or or room air temperature detector SAB 010 0…40
°
C NTC 10 k
Ω
B3 –
1 Duct pre-heating temperature detector STA 010 0…40
°
C NTC 10 k
Ω
B4 –
or duct relative humidity detector STV 010 0…40
°
C NTC 10 k
Ω
B4 –
1 Room relative humidity and temperature detector SAU 012 0…40
°
C ; 20…80 % NTC 10 k
Ω
B3-B6 –
or duct relative humidity detector SUR 012 20…80 % – B6-B7 –
or duct relative humidity detector (swimming pools) SUR 051 10…90 % – B6-B7 –
1 0...10 V– to 2-stage On-Off Duct converter CSV 304 – – U1 –
1 Modulating to 0...10 V– converter CSC 304 – – U2 –
1 Temperature set-point adjuster CDB 100 – – Rt
°
–
1 Relative humidity set-point adjuster CDB 200 – – RH –
1 Outside air minimum distance positioner PCS 04 – – Rs –
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05.05.01