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DT70 FAN -COIL THERMOSTATS

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Fan Speed Switch (SP3T line voltage)

 

Where supplied, the fan switch allows the selection of 3
different settings - low, medium, or high.

 
 

System Switch

 

Thermostat and Fan-coil equipment are powered off or on.
When in the off position, terminal four is powered to close the
VC4000, VC6000 valve(DT70-F002ET,F012ET models only).

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The temperature setpoint can be adjusted between 5

 and

35

°

C in steps of 0.5

 by using the - and + keys. The

temperature setpoint can be changed by pressing the + key
to increase the setpoint, or pressing the – key to decrease the
setpoint.

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The measured room temperature is normally displayed and
the first press of the + or - keys will switch to displaying the
user setpoint.  If no key is pressed for 5 seconds, the display
will return to showing the room temperature.

When the cooling relay is closed this will be indicated by a 

symbol, whereas closure of the heating relay will be indicated
by a 

#

 symbol.

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NOTE : When a parameter setting is changed, If no activity is

detected for five seconds, the user is exited from the
installer setup mode and the display will return to
showing the room temperature.

Cooling/Heating changeover

(1) To change cooling/heating mode, press the SET  key for 3

seconds and C(Cooling) is displayed.

(2) Press the + or - key. These keys change the mode into

H(Heating) or C(Cooling).

 
 

Minimum relay off-time setting

 

  This is the function that prevents the relay from energizing
the load for the setting time.

 

  The default setting is zero minutes.

 

  (no minimum relay off-time)
(1) To adjust the minimum off-time, press the SET key for 3

seconds.

(2) Press the SET key one time.
(3) By using the + key, minimum off-time can be set between

zero and 10 minutes.

Room temperature display biasing
  When the measured room temperature is highly displayed, It
is the function that the display can be biased with -1

 or -2

.

(1) Press the SET key for 3 seconds and “C0” is displayed.
(2) Press the SET key two times.
(3) By using the +,- keys, room temperature display can be

decreased by 1

 or 2

.

 

Output timer setting

 

  It is the function that relay on/off action is not operated for
setting time.
(1) To set the time, press the SET key one time.
(2) By using  +,- keys, time can be set between 0 and 24

hours.

NOTE : During the timer counting, If the power is failed or
system switch is off, the timer setting is canceled.

HONEYWELL

Honeywell Co., Ltd.

Home and Building Control

6F, Hanil Group Building 191, Hangangro-2ga,

Yongsan-gu, Seoul, 140-702, Korea

Tel. 82-2-799-6170

Fax. 82-2-792-9013

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Summary of Contents for DT70 Series

Page 1: ...hermostat well harmonised with any interior decoration of office or hotel Digital display of room ambient temperature with display of user selected setpoint on demand Push button adjustment of setpoint Push button setting of Heat Cool changeover Switches allow manual control of system operation and fan speed Thermostat mounts directly onto a wall a standard 65365mm junction box hole pitch 60mm or ...

Page 2: ...V 12A inrush Typical loads are fans zone valves and relays Operational life Greater than 100 000 cycles all loads for thermostat contacts at 220 V Greater than 10 000 operations for all manually operated switches Mounting Mounts directly onto wall or wall box a standard 65x65mm junction box hole pitch 60mm or a 85385mm junction box Mounting screws supplied Wiring 7 or 9 screw in terminals per unit...

Page 3: ...d the thermostat concealed pipes or chimneys 0 22 0 93 8678 6 6 3 656 The DT70 Series thermostat can be directly mounted on the wall or on either a 65x65mm standard junction box or a 85x85mm junction box Mounting screws are supplied for both alternatives IMPORTANT The installer must be a trained service engineer Disconnect the power supply before beginning installation Separate the base from the m...

Page 4: ...g Diagram DT70 F002ET F012ET 7 6 5 4 3 2 1 CONTROL ELECTRONICS RELAY FAN Switch H M L ON OFF Switch FAN CLOSE Overload Protection Device COOL HEAT N L 3 6 2 VC6013 OFF ON Fig 3 DT70 F002ET DT70 F012ET Cool Heat Off wiring diagram with 3 speed cycled fan ...

Page 5: ... FAN Switch H M L FAN EXTERNAL UNIT CHILLER Over Load Protection Device 8 9 VALVE M HI LO PRESSURE SWITCH COMPRESSOR MOTOR OFF ON AUTO MANUAL ON OFF Switch OFF ON L N INTERNAL UNIT Fan Coil COOL HEAT Fig 4 DT70 F003ET Cool Heat Off wiring diagram with 3 speed fan and CHILLER DT70 F003ET ...

Page 6: ...rn to showing the room temperature Cooling Heating changeover 1 To change cooling heating mode press the SET key for 3 seconds and C Cooling is displayed 2 Press the or key These keys change the mode into H Heating or C Cooling Minimum relay off time setting This is the function that prevents the relay from energizing the load for the setting time The default setting is zero minutes no minimum rel...

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