Terminal Designations; Wiring Diagrams; Technical Specification - Honeywell T6861 Series Data Sheet / Manual

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
heat mode until the temperature rises to 8
thermostat is turned on.
On/off mode
Pressing power button can switch between on and
off mode.

Technical specification

Power supply 230 ± 10% VAC
Frequency 50/60Hz
Control algorithm PI, On/off output
Accuracy +/-1
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
Display range 0~37
Installation Installed on 3" x 3"
Protection Class IP20
Environmental Operation temperature -18~49
Conditions Shipping temperature -35~65
Relative humidity 5~90%
APH07CH04 - R2001EN

o
C, the thermostat will start
o
C or the
INDICATES THERMOSTAT
HAS BEEN SET TIME OFF
o o
C at 21 C
o
C
o
C

Terminal Designations

Terminal
L
N
W
Y
Gh
Gm
Gl
Sc Ground for remote sensor and remote setback
RSB

Wiring diagrams

Application 1: 2 pipes heat only wiring diagram
1
2
Heat valve
3
4
5
6
7
8
9
Fig.2.1 Typical wiring for ON/OFF control in 2 pipe heating only (VC4013)
1
2
Heat valve
3
4
5
6
7
8
o
C
9
o
C
Fig.2.2 Typical wiring for 3-wire control in 2 pipe heating only (VC6013)
Description
AC Power
AC Ground
Heating open
Cooling open
High speed fan relay
Medium speed fan relay
Low speed fan relay
Remote set back
L
N
Fan
Remote Setback
L
N
Fan
Remote Setback