Honeywell T6861 Series User Manual

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Freezing protection mode
Freezing protection can be selected as disabled
(default) or enabled. In freezing protection mode
(no such mode in cool only application), when
thermostat is in OFF mode while the acquired
temperature is below 6
o
C, the thermostat will start
heat mode until the temperature rises to 8
o
C or the
thermostat is turned on.
Technical specication
Power supply 230 ± 10% VAC
Frequency 50/60Hz
Control algorithm PI, On/off output
Accuracy +/-1
o
C at 21
o
C
Rating capacity For 220V power supply:
4(3)A for fan load, 2(1)A for zone
valve
Cycle times 100,000 times
Setpoint range 10~32
o
C
Display range 0~37
o
C
Installation Installed on 3" x 3"
Protection Class IP20
Environmental Operation temperature -18~49
o
C
Conditions Shipping temperature -35~65
o
C
Relative humidity 5~90%
Terminal Designations
Terminal Description
L AC Power
N AC Ground
W Heating open
Y Cooling open
Gh High speed fan relay
Gm Medium speed fan relay
Gl Low speed fan relay
Sc Ground for remote sensor and remote setback
RSB Remote set back
On/off mode
Pressing power button can switch between on and
off mode.
INDICATES THERMOSTAT
HAS BEEN SET TIME OFF
APH07CH04
-
R2001EN
Fig.2.2 Typical wiring for 3-wire control in 2 pipe heating only (VC6013)
Wiring diagrams
Application 1: 2 pipes heat only wiring diagram
Fig.2.1 Typical wiring for ON/OFF control in 2 pipe heating only (VC4013)
1
2
3
4
5
6
7
8
9
N
L
Heat valve
Fan
Remote Setback
N
L
1
2
3
4
5
6
7
8
9
Heat valve
Fan
Remote Setback

Honeywell T6861 Series Specifications

General

Frequency	50/60 Hz
Output	Relay
Display	LCD
Compatibility	Compatible with most HVAC systems
Temperature Setting Range	10 to 32°C
Accuracy	±1°C
Fan Speed	High, Medium, Low, Auto
Mounting	Wall-mounted
Backup Battery	No
Dimensions	86 x 86 x 15 mm
Weight	150 g