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Table of Contents
Related Manuals for EPH Controls HDT
Summary of Contents for EPH Controls HDT
- Page 1 Room Thermostat Installation and Operation Guide...
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Page 2: Table Of Contents
Table of contents Factory default settings Speci cations LCD Display Buttons Wiring Mounting & installation On / O Function & Adjusting the target temperature Locking the Keypad / Backlight Menu Function PO 1 Operating Mode Nor (Normal Mode) Delay Start Control (On/O ) Time Proportional Integral Mode (TPI) - Page 3 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...
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Page 4: Installation Instructions
Mains operated non-programmable Room Thermostat Installation Instructions... -
Page 5: Factory Default Settings
Factory default settings Contacts: Volt Free High and Low Temp. limitation: Keypad lock: Backlight: Auto Setback: 0.0˚C (o ) Operating mode: Normal EPH Controls Ltd. -
Page 6: Speci Cations
Speci cations 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:... -
Page 7: Lcd Display
If the keypad is locked, the lock symbol is displayed. When the thermostat is calling for heat, the ame symbol is displayed. When a high or low temperature limit is set, ‘LIM’ is displayed. Displayed when setback is enabled. Displayed when delay start is enabled. EPH Controls Ltd. -
Page 8: Buttons
Buttons Reset Handwheel Button Standby Button... -
Page 9: Wiring
* If mains output is required terminals L and 2 must be electrically linked. Terminal Connections Live In Neutral In Terminal 1 Setback Terminal 2 COM - Common connection Terminal 3 ON - N/O Normally open connection EPH Controls Ltd. -
Page 10: Mounting & Installation
Mounting & Installation Caution! Installation and connection should only be carried out by a ƒ quali ed person. Only quali ed electricians or authorised service sta are permitted ƒ to open the thermostat. If the thermostat is used in a way not speci ed by the manufacturer, ƒ... - Page 11 Screw the backplate onto a back box or directly to the surface. Wire the thermostat according to the wiring diagram on page 7. Close the front housing and tighten the screw on the bottom of the thermostat. EPH Controls Ltd.
- Page 12 Mounting & Installation 45 113...
- Page 13 Mains operated non-programmable Room Thermostat Operating Instructions...
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Page 14: On / O Function & Adjusting The Target Temperature
On / O Function Press to turn the thermostat On or O . When in the ON mode the thermostat will display the current ambient temperature. When in the OFF mode the thermostat will display the current ambient temperature and the word ‘OFF’ . Adjusting the target temperature Rotate clockwise to increase the target temperature. -
Page 15: Locking The Keypad / Backlight
‘OFF’ The backlight is permanently o . To adjust the backlight setting, press for 10 seconds. ‘AUt’ appears on the screen. Rotate to change the mode between AUTO, ON and OFF. Press to con rm selection and to return to normal operation. EPH Controls Ltd. -
Page 16: Menu Function
Menu Function This menu allows the user to adjust additional functions. PO 1 Operating Mode (Normal / Delay Start / TPI) There are three settings for selection, Normal, Delay Start or TPI mode. The default setting is Normal. Press and hold the together for 5 seconds, ‘P01 &... -
Page 17: Nor (Normal Mode)
When the temperature rises above the target temperature, will disappear, and the thermostat will cancel the demand for heat. Graph (15.1): On / O Control Temp 22˚C Target Temperature 21˚C 20˚C 19˚C 18˚C 17˚C Time Minutes EPH Controls Ltd. -
Page 18: Delay Start Control (On/O )
PO 1 Operating Mode (Normal / Delay Start / TPI) Delay Start Control (On/O ) When the delay start mode is active, ‘dS’ will appear continuously on the screen. When in this mode the thermostat is delayed by a variable time depending on the current temperature, target temperature and also the fall in temperature from when the delay start has activated. - Page 19 3°C the thermostat will delay starting for circa 24 minutes. If the di erence is 6°C or more then the thermostat will be switched on immediately. The time delay will change if the temperature drops from the original calculation. EPH Controls Ltd.
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Page 20: Time Proportional Integral Mode (Tpi)
PO 1 Operating Mode (Normal / Delay Start / TPI) Time Proportional Integral Mode (TPI) When the thermostat is in TPI mode and the temperature is rising in the zone and falls into the Proportional Bandwidth section, TPI will start to a ect the thermostats operation. The thermostat will turn on and o as it gains heat so that it doesn’t overshoot the target by too much. - Page 21 TPI control. You can set this temperature from 1.5°C to 3.0°C in 0.1°C increments. Graph (19.1): TPI Control Temp 22˚C 21˚C Target Temperature 20˚C Proportional Bandwidth 19˚C 18˚C 17˚C Time Minutes Heating On Heating O EPH Controls Ltd.
- Page 22 PO 2 Setting High & Low limits Hi 35°C Lo 5°C This menu allows the installer to change the minimum and maximum temperatures that the thermostat can be set at. To access this setting press & hold together for 5 seconds. ‘P01 & Nor’ will appear on the screen. clockwise.
- Page 23 ‘HO ’ appears on the screen, the temperature will begin to ash. to select the ‘HO ’ temperature, press to con rm. Press to con rm. The settings will be saved and the user will be returned to the previous screen. EPH Controls Ltd.
- Page 24 P04 – Calibration This menu allows the installer to calibrate the temperature of the thermostat. To access this setting press and hold together for 5 seconds. ‘P01 & Nor’ will appear on the screen. Rotate clockwise until ‘P04 & CAL’ appears on the screen. Press to select.
- Page 25 ‘P05 & Fr’ appears on the screen. Rotate Press to con rm. Rotate to switch between ‘On’ and ‘OFF’ . Press to con rm selection. The setting will be saved and the user will be returned to the previous screen. EPH Controls Ltd.
- Page 26 P06 – Setback Mode (0.0°C / O ) * To use the thermostat in Setback mode, please refer to page 7 of this guide. * Setback functionality can only be used in conjunction with a Programmer / Timeswitch. When the thermostat is operating in Setback mode, it will operate to a reduced temperature based on the input set by the installer in this menu.
- Page 27 ‘rst’ will appear on the screen and ‘nO’ will ash. Rotate clockwise. ‘rst’ will remain and ‘YES’ will ash on the screen. Press to con rm. The thermostat will restart and revert to its factory de ned settings. EPH Controls Ltd.
- Page 28 EPH Controls IE technical@ephcontrols.com www.ephcontrols.com/contact-us +353 21 471 8440 Cork, T12 W665 EPH Controls UK technical@ephcontrols.co.uk www.ephcontrols.co.uk/contact-us +44 1933 322 072 Harrow, HA1 1BD...
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