items: working states (cool, heat or ventilation), the speed of fan coil, room
temperature, set-point. There are following keys on
the panel: On/Off “
”, Exchange
mode (cool, heat or ventilati
on) “
”, Select fan speed (high, medium, low or auto) “
”,
set-
point temperature “
” and “
”.
H7
990
adopt digital control technology with large LCD display, It shows the
following
BASIC FEATURES
STATUS DISPLAY
Room temperature setting
Manual or Auto 3-speed changeover
Defrost (low temperature protection)
IR remote control (Option)
Blue Backlight (Option)
Working Status: Cool
, Heat
, Ventilation
Fan Speeds: Low
, Medium
, High
and Auto
.
Room temperature display
Temperature setting display
SPECIFICATIONS
Sensing element:
NTC
Accuracy :
± 1
℃
Set-point range: 5
℃
to 35
℃
Display range:
0
～
50
℃
Operation environment: 0
～
45
℃
Operating Humidity: 5
～
90%RH (non-condensing)
Power supply:
AC 85
～
260V, 50/60Hz
Switch current rating: Resistive: 2A, Inductive: 1A
Rated Power:
2 W
Wirings: Screw-in terminals, each terminal capable of
accepting 2 x 1.5 mm
2
or 1 x 2.5 mm
2
wires
Housing: ABS + PC Flame Retardant
Dimensions: 86 × 86 × 13 mm ( W × H × D )
Hole pitch: 60 mm ( Standard )
Protection Class: IP30
Display: LCD
OPERATION
On/Off: Press
“
” to turn on, press “
” again to turn off thermostat and its output.
Setting temperature: Press
“
” to reduce set-point, press “
” to raise set-point, and 0.5
℃
changed once.
Mode Selection
: Press “
” to change system working in cooling “
”, heating “
” or ventilation “
” mode, the related
icon will flash, and it will be confirmed automatically after 5 seconds. The ventilation function is invalid for
H
7990 08
.
Fan Speed Selection
H7
990 08
:
P
ress “
” to change fan speed among “ (Hi)”,
“
(
Med)”, “ (Low)”
or
“Auto”.
Under auto fan speed
“Auto”, the fan-speed will be changed automatically. Auto LOW-speed When the difference
MODEL DENOMINATIONS
H7990 08
–
R:
IR remote function. Blank is invalid. (
Remote controller should be ordered additionally
)
L:
Backlight available. Blank is invalid.
Y:
Control damper to open or close.
DA/DA2:
Control Motorized Valve (DA: Control 2-wire N.C. FCU valve; DA2: Control 3-wire FCU valve) and 3-speed
fan; When the temperature reaches the set-point, it will close the Motorized Valve with the fan still running.
DB/DB2:
Control Motorized Valve (DB: Control 2-wire N.C. FCU valve; DB2: Control 3-wire FCU valve) and 3-speed
fan; When the temperature reaches the set-point, it will close the Motorized Valve and Fan both.
FCV2:
Control 4 pipe fan coil units, Control two Motorized Valves and 3-speed fan, when the temperature reaches
the set-point, it will close the Motorized Valves with the fan still running.
Data sheet for
H7
990
08
, Is
sue 0916
HERZ Armaturen Gws.m.b.H
Richard-Strauss-Strasse 22,1230 Vienna, Austria.
1
H
ERZ
H7
990
-08
Series Thermostat
H7
990
Series thermostats are available for individual room temperature control
in residential, industrial and business premises. Suitable for 2-pipe or 4-pipe Fan Coil
configuration.
