EPH HDT Istruzioni operative
Installation and Operation Guide
Room Thermostat
HDT
3
Factory default settings
4
Specications
5
LCD Display
6
Buttons
7
Wiring
8
Mounting & installation
13
Locking the Keypad / Backlight
14
Menu Function
18
12
On / O Function & Adjusting the target temperature
15
Table of contents
16
15
Delay Start Control (On/O)
PO 1 Operating Mode
Nor (Normal Mode)
Time Proportional Integral Mode (TPI)
23
25
21
22
20
24
PO 2 Setting High and Low limits
PO 3 Hysteresis HOn and HO
PO 4 Calibration
PO 5 Frost Protection
PO 6 Setback Mode
PO 7 Resetting the Thermostat
Mains operated non-programmable Room Thermostat
Installation Instructions
3
EPH Controls Ltd.
Factory default settings
Contacts: Volt Free
High and Low Temp. limitation: O
Keypad lock: O
Backlight: Auto
Setback: 0.0˚C (o)
Operating mode: Normal
4HDT
Specications
Power supply / Input: 230Vac 50-60Hz
Power consumption: Operating ≤ 1.5W
Temperature range: 5 … 35˚C
Ambient temperature: 0 … 45˚C
Ambient admissible humidity: 5-95%RH
Contact rating: 7A 230Vac
Dimensions: 85 x 85 x 36mm
Temperature sensor: NTC 100K
Backlight: White
IP rating: IP20
Pollution degree: 2
Switching dierential: Adjustable from 0.0 – 1.0°C
0.1°C increments
Automatic action: 1C
5
EPH Controls Ltd.
[1]
[6]
[2]
[3][4]
[5]
[1] Shows the current / target temperature.
[2] If the keypad is locked, the lock symbol is
displayed.
[3] When the thermostat is calling for heat, the ame
symbol is displayed.
[4] When a high or low temperature limit is set, ‘LIM’
is displayed.
[5] Displayed when setback is enabled.
[6] Displayed when delay start is enabled.
LCD Display
6HDT
Buttons
Handwheel
Reset
Button
Standby Button
7
EPH Controls Ltd.
Wiring
SB
ON
321LN
L
MAINS SUPPLY
N
COM
230V on Terminal 1: Thermostat works in Normal mode
0V on Terminal 1: Thermostat works in Setback mode
* If mains output is required terminals L and 2 must be electrically linked.
Terminal Connections
L Live In
N Neutral In
Terminal 1 Setback
Terminal 2 COM - Common connection
Terminal 3 ON - N/O Normally open connection
8HDT
Mounting & Installation
Caution!
Installation and connection should only be carried out by a qualied person.
Only qualied electricians or authorised service sta are permitted to open the
thermostat.
If the thermostat is used in a way not specied by the manufacturer, its safety may be
impaired.
Prior to setting the thermostat, it is necessary to complete all required settings
described in this section.
Before commencing installation, the thermostat must be rst disconnected from the
mains.
This thermostat can be mounted in the following ways:
1) Directly mounted on wall
2) To a recessed conduit box
Indice
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