Comfortheat ETN4 HYDRONIC Programmable Thermostat Operating Manual

Comfortheat ETN4 HYDRONIC Programmable Thermostat

ETN4 MANUAL – HYDRONIC

A Comfort Heat floor heating system has been installed on your floor. Floor heating warms from the ground up providing an unparalleled feeling of comfort. This heating system is controlled by an electronic thermostat and floor sensor for optimum temperature control and efficiency.

ETN4 DETAILS
The ETN4 thermostat is a home automation-compatible thermostat. Mounted in the switchboard (DIN rail) and utilizes a setback temperature function. During the setback periods, the floor does not turn OFF but programs the floor temperature to a lower temperature.

PRIOR TO TURNING ON
Slab or Under Tile – Concrete, screeds, and tile glues must be fully cured before turning the heating on. For concrete and screeds, wait at least 3 weeks before turning it on. When turning on the floor heating for the first time, increase the floor temperature gradually over 2-3 days. Under Carpet and Timber – Can be turned on once the installation is complete.

SUGGESTED TEMPERATURES

AREAS	SLAB/TILE/CARPET FLOORING	TIMBER FLOORING	RADIATORS
SUGGESTED FLOOR TEMP.	21-24ºC	24ºC max.
SUGGESTED AIR TEMP.			NA

TECHNICAL DATA – ETN4

• Supply Voltage : 240V AC, 50/60hz
• Output Relay : 16A SPST, 3600W max
• Switching Differential: 0.4 deg C
• Built-in Switch: 2 pole 16A
• Default Temp Range: 0/+40 degC
• Housing/protection: IP20
• Dimensions (HxWxD) : 86mm x 52mm x 58mm
• Mounted: Vertical/DIN rail mounted
• Thermostat Warranty: 2 years

ETN4 OPERATION SETTINGS

TURNING ON

• Slide ON the ON/OFF switch
• Press the right(up) and left(down) buttons to set the desired floor set point temperature.

The thermostat screen is set to always display the set point temperature and not the current running temperature. The 3 heating squiggles to the right of the temperature will turn on when the floor is heating.

SETTING PARAMETER VALUES
Parameter settings allow you to set a range of values to define heating options and temperatures. See the ETN4 included manual to view the full range of parameter options. Most default values need no adjustment. Below setting is one option you should adjust to suit;
Night Setback / Energy Saving Function

• Press and hold the programming button [center] for 3 seconds.
• Press the programming button repeatedly until you view parameters nSb / -5.0
• Arrow right[up] and left[down] to adjust the setback temperature differential.

This is your setback temperature. The value is a differential value based on your set point temperature. A suggested setback temperature would be 5 degC if you did not want the floor heating to turn on, as it is unlikely your floor temperature will drop below this temperature. Example of suggested tiled bathroom setting; Set point temperature 25 degC Setback temperature -20.0 degC If no button is pressed after 30 seconds the thermostat returns to the home screen. The timer to activate the setback temperature is controlled by an external signal. See Figure 1a.

CHILD LOCK
Allows thermostats in public places to be locked.

• Press and hold the left and right buttons simultaneously for 10 seconds. A symbol on the screen indicates the thermostat is locked.
• Press and hold the left and right buttons simultaneously for 10 seconds to release the child lock.

Programming your floor heating schedule is a completely individual decision based on your lifestyle and personal preferences. Our recommended times and temperatures are a guide only based on popular settings.

RUNNING GUIDELINES – HYDRONIC

Gas systems are ideal for on-demand heat. Gas boilers are efficient any time of day, quiet to run, and billed at a flat rate. Heat Pump systems are at the forefront of hydronic heating and can be highly cost-efficient to run. Heat pumps require a range of considerations when running, for example, the location, appropriate time of use, and efficient times to run. In-Slab installations are typically large and have excellent thermal mass. Initially, the slab may take a few days to warm and then only requires to be topped up to create an all-day warmth. Allow 2 4 hours for the slab to top up. In-Screed installations typically heat up in around 2-3 hrs depending on the screed thickness. Screeds will retain the heat for a few hours and by keeping doors closed and windows shut, retain the warmth for an efficient and comfortable room temperature. Programme the in-screed heating to run when at home, based on your lifestyle. Under-Timber installations warm the small air space below the timber allowing this warmth to gently rise into the room. Under timber, heating has a maximum temperature limit and may require supplemental heating to warm the room. Radiator systems are not suitable with an ETN4 as they offer no air-sensing control

THERMOSTAT HEATING SCHEDULE GUIDES

To set up the ETN 4 thermostat press ;

• Turn ON the thermostat
• Adjust the temperature using the up[right] & down[left] buttons to [set point temperature]; see the below temperatures as a guide.
• Press and hold the programming button [center] for 3 seconds.
• Press the programming button repeatedly until you view parameters nSb /
• Adjust this parameters using up[right] and down[left] button to = [set point temperature] – [setback temperature] [This value is a negative number and the differential value]

IN-SLAB AREAS [GAS] – SAME TIME EVERY DAY ANY TIME OF DAY WITH TWO HEAT CYCLES [GUIDE ONLY]
Thermostat Settings – Set point temperature value 21°C / Set back parameters nSb value -11°C

• Schedule 1 – 21°C @ 3.00 [set point temperature]
• Schedule 2 – 10°C @ 7.00 [setback temperature]
• Schedule 3 – 21°C @ 16.00 [set point temperature]
• Schedule 4 – 10°C @ 20.00 [setback temperature]

IN-SLAB AREAS [HEAT PUMP] – SAME TIME EVERY DAY WITH TWO HEAT CYCLES[OFF PEAK AND SHOULDER TIMES ONLY]
[GUIDE ONLY]
Thermostat Settings – Set point temperature value 21°C / Set back parameters nSb value -16°C

• Schedule 1 – 21°C @ 7.00 [set point temperature]
• Schedule 2 – 5°C @ 14.00 [setback temperature]
• Schedule 3 – 21°C @ 20.00 [set point temperature]
• Schedule 4 – 5°C @ 22.00 [setback temperature]

IN-SCREED AREAS [GAS]] – SAME TIME EVERY DAY ANY TIME OF DAY WITH TWO HEAT CYCLES [GUIDE ONLY]
Thermostat Settings – Set point temperature value 21°C / Set back parameters nSb value -11°C

• Schedule 1 – 21°C @ 5.00
• Schedule 2 – 10°C @ 8.00
• Schedule 3 – 21°C @ 15.00
• Schedule 4 – 10°C @ 22.00

IN-SCREED AREAS [HEAT PUMP] – SAME TIME EVERY DAY ANY TIME OF DAY WITH TWO HEAT CYCLES [GUIDE ONLY]
Thermostat Settings – Set point temperature value 21°C / Set back parameters nSb value -11°C

• Schedule 1 – 21°C @ 7.00
• Schedule 2 – 10°C @ 10.00
• Schedule 3 – 21°C @ 13.00
• Schedule 4 – 10°C @ 20.00

TROUBLESHOOTING

If an error message occurs, the thermostat will display one of the following errors;
E0: Internal failure. The thermostat is defective. The thermostat must be replaced.
E1: Internal room sensor defective or short-circuited. The thermostat must be replaced.
E2: External floor sensor disconnected, defective, or short-circuited. Requires sensor reconnection or replacement.
E5: Internal overheating. Installation requires inspection.

Comfort Heat Australia Pty Ltd ABN 64 089778941
8/11 Ponderosa Parade Warriewood NSW 2103
PO Box 220 Mona Vale 1600
Telephone +61 9979 8600
sales@comfortheat.com.au
www.comfortheat.com.auLocal call 1300 13WARM

REFERENCE:

DOWNLOAD MANUALS:

Comfortheat ETN4 HYDRONIC Programmable Thermostat Operating Manual

OTHER MANUALS:

Comfortheat ETN4 ELECTRIC Programmable Thermostat Setup Manual

Comfortheat ETN4 Programmable Thermostat User Manual

Comfortheat ETN4 THERMOSTAT Wiring Diagram

Comfortheat ETN4 HYDRONIC Programmable Thermostat Operating Manual