Herz H7711 Series User manual

H7711 series thermostats are used to control room temperature in industrial, commercial
and residential environment via controlling electric modulating valve with 0-10VDC (4-20mA)
control signal or floating control as well as damper actuator of VAV system.
Electronic control technology is adopted, with green backlit LCD display of: working mode
(cooling “ ”, heating “ ”, ventilating “ ”, auto “ ” ); fan speed (low “ ”, med “ ”, high “ ”,
auto “”); room temperature; setting temperature etc. push button: On/Off “ ”; mode
changeover “ ”; fan speed choose “ ” and temperature adjustment “ ” and “”.
Shell: PC + ABS retardant material.
Function :
Detect and Display room temperature
Room temperature setting
Fahrenheit or Celsius degree display
Timing sleep
Control On/Off of cooling and heating equipment
Selectable single speed or three speed fan control
Order Guide:
Model
Output signal
Fan
(Single/3-speed)
RS485
Network
Input
Control
Remote
Sensor
Floating
Modulation
H7711A
Cooling/Heating
√
√
H7711AN
Cooling/Heating
√
√
√
H7711B
Cooling/Heating
√
√
H7711BN
Cooling/Heating
√
√
√
H7711C
Cooling/Heating
√
√
√
H7711CN
Cooling/Heating
√
√
√
√
H7711D
Cooling/Heating
√
√
√
H7711DN
Cooling/Heating
√
√
√
√
H7711E
Cooling
Heating
√
√
√
H7711EN
Cooling
Heating
√
√
√
√
H7711F
Heating
Cooling
√
√
√
H7711FN
Heating
Cooling
√
√
√
√
H7711I
Cooling&Heating
√
√
√
H7711IN
Cooling&Heating
√
√
√
√
H7711K
Cooling&Heating
√
√
√
H7711N
Cooling&Heating
√
√
√
√
Fan: thermostat with fan functions, can be selected with single speed fan or three speed fan by setting parameter.
Remote Control: input signal can be selected by setting parameter.
Specification :
Set temperature range: 0 - 99.5℃adjustable
Accuracy displayed: 0.1℃
Accuracy: ±0.5℃
Rated Power: 1 W
Sensor type: NTC
Display: LCD
Power: AC 24V±10％, 50Hz/60Hz
Output signal: AC 24V×2 (0.5A resistive) ,
0 - 10VDC(5mA) / 4 - 20mA (600Ω)
Input signal: dry contact (NO)
Dimensions: 86×86×23mm (W×H×D)
Fixing screw width : 60mm (Standard)
H7711 Series Digital Thermostat.
Data sheet for H7711, Issue 0916
HERZ Armaturen Ges.m.b.H.
A-1230 Wien, Richard-Strauss-Strasse 22,A-1230 Vienna, Austria.
1

Operations:
On/Off: Press “ ” buttons to turn on; press “ ” again to turn off.
Setpoint: With thermostat on, press “ ” to reduce the setpoint, press “ ” to increase the setpoint, the setpoint step is
0.5℃, the setpoint will be confirmed automatically after 5 seconds, and then return to dispay status, press “ ” or “ ” to
check setpoint.
Mode: With thermostat on, press “ ” to change the working mode –Cooling “ ”，Heating “”, Vent " ", Auto “ ”
( Auto is available from H7711E to H7711K).
Fan Speed: With thermostat on, press “ ” to select the desired speed – low speed “ ”, Med speed “ ”, High speed
“ ”, auto “ ”. If single speed fan available, there’s only med speed “ ”.
Under auto speed fan, the fan speed will be changed automatically as below: in low speed when room temperature
is 1℃difference with setpoint;in med speed when room temperature is 2℃difference with setpoint; in High speed when
room temperature is 3℃difference with setpoint.
Sleep: Thermostat will get into sleep function after programming.The set Temperature should to be.
To set：Press “ ” button for 3 seconds till “ ” display, there’s a number of count down in the center of LCD, Use “ ” or
“ ” to adjust the desired sleep time: the max. = 48 hours; thermostat will return to the working status after 5
seconds, “ ” is flashing to start counting down. The setpoint should be replaced by the sleep setpoint.
To quit: When thermostat get into Sleep function, “ ” will flash, press “ ” or “ ” to quit.
Keypad lock: press “ ” and “ ” for 10 seconds till to “ ” display to activate, under this function, any keypad is locked.
Press “ ” and “ ” for 10 seconds till “ ” disappear to quit the function.
Set Parameters: With thermostat off, press “ ” for 10 seconds to enter menu to set the parameters.
Parameter table：
Paramete
r
Description Default Range Step
1 Power on status (0: Off; 1: On; 2: Hold) 2 0 - 2
2 Fan speed (0: Single Speed; 1: Three Speed) 1 0 - 1
3 Fan mode (DA; DB) 0
4 Sensor selection (0: Internal; 1: Remote) 1 0 - 1
5 Temperature format (0: Celsius; 1: Fahrenheit) 0 0 - 1 0.1
6 Temperature calibration 0 -20.0 - ﹢20.0 0.1
7 Minimum setpoint 5℃/41℉0 - 99.5 0.5
8 Maximum setpoint 35℃/96
℉
0 - 99.5 0.5
9 Dead band (from 7711E to 7711K) 2 0 - 10 0.5
10 Heating & Auto sleep setpoint 7℃/45℉0 - 99.5 0.5
11 Cooling sleep setpoint 28℃/82
℉
0 - 99.5 0.5
12 Comms# (7711XN) 1 1 - 32 1
13
Input Signal Mode
0: Invalid
1: Changeover(from 7711A to 7711D)
2: thermostat will be sleep without input signal
3: thermostat will be Off without input signal
0 0 - 3
14 Heating reset time 90 sec. 10 - 300 sec. 10 sec.
15 Cooling reset time 90 sec. 10 - 300 sec. 10 sec.
16 Ports mode (0: Modulation & Floating; 1: On/Off) 0 0 - 1
17 Valve status as turn off (0: Close; 1:Hold; 2: Open ) 0 0 - 2
18 Port1 Modulation direction(0:10V Open; 1:10V Close) 0 0 - 1
19 Port1 Modulation minimum signal 0Bit 0-128Bit(5V/10mA) 0.04V/Bit(0.08mA/Bit)
HERZ Armaturen Ges.m.b.H.
A-1230 Wien, Richard-Strauss-Strasse 22,A-1230 Vienna, Austria.
2

20 Port1 Modulation proportional 2 1 - 20 0.5
21 Port2 Modulation direction(0:10V Open;1:10V Close) 0 0 - 1
22 Port2 Modulation minimum Signal 0 Bit 0-128Bit(5V/10mA) 0.04V/Bit(0.08mA/Bit)
23 Port2 Modulation proportional 2 1 - 20 0.5
24 Port1 Floating minimum time 1 sec. 1 - 9 sec. 1 sec.
25 Port1 Floating maximum time 30 sec. 10 - 300 sec. 10 sec.
26 Port1 Floating minimum time 1 sec. 1-9 sec. 1 sec.
27 Port1 Floating maximum time 30 sec. 10 - 300 sec. 10 sec.
28 Disable / Enable bypass PID control
( 0: Disable; 1: Enable ) 0 0 - 1
29 Override output value when bypass PID control
Display output value when enable PID control 0 - 255
30 Override output value when bypass PID control
Display output value when enable PID control 0 - 255
31 Input signal management:
0: Input valid
1: Override Input: open
2: Override Input: close
0 0 - 2
32 Display room temperature or set-point
0: Room temperature 1: Set-Point 0 0 - 1
33 Configuration external sensor
0: B = 3950; 1: B = 3450; 2: B = 3900
3: User define (via network. default B = 3950)
4: 5: 6: N/A
0 0 - 3
34-38 N/A
39 Start temperature of Low temperature protection 5℃/42℉0-15℃/42-62℉1℃/2℉
40 Stop temperature of Low temperature protection 7℃/46℉2-17℃/46-66℉1℃/2℉
It will confirm itself 20 seconds later after setting and return to Off state.
Switch: There is a 5 poles switch on PCB. The meaning is below:
Location ON OFF
1 120 ohm Resistance between AB wires No Resistance between AB wires
2 Port 1 Modulation 0 - 20mA Off
3 Port 1 Modulation 0 - 10VDC Off
4 Port 2 Modulation 0 - 20mA Off
5 Port 3 Modulation 0 - 10VDC Off
Mounting:
1. Open the back panel with
screwdriver.
2. Connect the wires follow the
diagram. 3. Fix the base with screw. 4. Fix the front panel and finish the installation.
HERZ Armaturen Ges.m.b.H.
A-1230 Wien, Richard-Strauss-Strasse 22,A-1230 Vienna, Austria.
3

Wiring diagram：
Note: Be sure to connect all the wires as per the wiring diagrams and keep it away from water, mud
and other material so as to prevent the unit being spoiled!
24VAC
H7711A/AN
L
N
OPEN
CLOSE
Floating Control
Cooling/Heating
RS
┴
Input
B
A
┴
~
COM
VO
VC
TR
Modbus
A
B
Input
Remote Sensor
24VAC
H7711B/BN
L
N
Modulating Control
Cooling/Heating
RS
┴
Input
B
A
┴
~TR
Modbus
A
B
Input
Remote Sensor
M0-10V
/4-20mA
V+
┴~
24VAC
H7711C/CN
L
N
OPEN
CLOSE
Floating Control
Cooling/Heating
RS
┴
Input
B
A
┴
~
COM
LOW
MED
HI
L
VO
VC
TR
Fan
Modbus
A
B
Input
Remote Sensor
24VAC
H7711D/DN
L
N
Modulating Control
Cooling/Heating
RS
┴
Input
B
A
┴
~
LOW
MED
HI
L
TR
Fan
Modbus
A
B
Input
Remote Sensor
M0-10V
/4-20mA
V+
┴~
24VAC
H7711E/EN
L
N
OPEN
CLOSE
Modulating Control
Heating
Floating Control
Cooling
RS
┴
Input
B
A
┴
~
COM
LOW
MED
HI
L
CO
CC
TR
Fan
Modbus
A
B
Input
Remote Sensor
M0-10V
/4-20mA
H+
┴
24VAC
H7711F/FN
L
N
OPEN
CLOSE
Modulating Control
Cooling
Floating Control
Heating
RS
┴
Input
B
A
┴
~
COM
LOW
MED
HI
L
HC
TR
Fan
Modbus
A
B
Input
Remote Sensor
HO
M0-10V
/4-20mA
C+
┴
HERZ Armaturen Ges.m.b.H.
A-1230 Wien, Richard-Strauss-Strasse 22,A-1230 Vienna, Austria.
All specificaons and informaon within this document are reflecng the informaon available at the me of going to print and meant for informaonal purpose only. Herz Armaturen
reserves the right to modify and change products as well as its technical specificaons and/or it funcon according to technological progress and requirements. All diagrams are
indicave in nature and do not to be complete. It is understood that all images of Herz products are symbolic representaons and therefore may visually differ from the actual product.
Colours may differ due to prinng technology used. In case of any further quesons don’t hesitate to contact your closest HERZ Branch-Office.
24VAC
H7711 I/IK
L
N
OPEN
CLOSE
OPEN
CLOSE
Floating Control
Heating
Floating Control
Cooling
RS
┴
Input
B
A
┴
~
COM
LOW
MED
HI
L
CO
CC
HO
HC
TR
Fan
Modbus
A
B
Input
Remote Sensor
24VAC L
N
Modulating Control
Heating
Modulating Control
Cooling
RS
┴
Input
B
A
┴
~
LOW
MED
HI
L
TR
Fan
Modbus
A
B
Input
Remote Sensor
M
M0-10V
C+ /4-20mA
┴
0-10V
H+ /4-20mA
┴~
H7711K/KN
4