Underfloor heating - Nu-Heat

Underfloor heating - Nu-Heat
Underfloor
heating
user guide
Heat pump systems
v16
© Nu-Heat 2016
UNDERFLOOR
HEATING
HEAT
PUMPS
SOLAR
THERMAL
working with you
before,
during
& after
your project
Nu-Heat
Know-How
2
For expert advice call us on 01404 549770
Contents
Welcome 04
About the Nu-Heat system
05
System startup
05
Heat pump systems
06
General principle of operation
06
System adjustments
07
Adjusting the flow rates
08
Pump settings
09
Systems with dial thermostats & timeclock (DS)
10
Systems with neoStat or neoAir thermostats
12
Servicing requirements
22
Energy efficiency (ErP)
23
Product support
23
For more information visit www.nu-heat.co.uk
3
System Ref:
Every Nu-Heat system is a custom
design. Please record your unique system
reference number above for future use.
Welcome
Congratulations, you are the owner of a Nu-Heat warm water underfloor heating
system, designed and supplied by Nu-Heat UK Ltd., the largest supplier of domestic
underfloor systems in the UK.
This manual is provided to help you understand how the system operates and the
correct settings required to get the most from your heating.
Nu-Heat did not install your system, therefore any installation matters should be
referred to the contractor concerned. Please record the installer’s details below.
For more information on the operation of your system and also troubleshooting
help, please visit the Nu-Heat website at nu-heat.co.uk.
Installer details
Company:
Contact name:
Contact telephone no.:
Address:
4
For expert advice call us on 01404 549770
About the Nu-Heat System
Description
Underfloor heating works by pumping warm water through special plastic tubing
embedded in the floor. This warms the floor and maintains the room at a
comfortable temperature.
The Nu-Heat EnergyMasterHP cylinder will provide mains pressure hot water from
all of your hot water outlets. With the addition of the optional domestic hot water
loop you can be assured of instant hot water from every outlet.
Benefits
In particular, underfloor heating systems:
•Provide a more comfortable heated environment,
• Permit unlimited interior design options,
• Increase the useable space within a property.
Moreover, all these benefits are available from a system which can be significantly
less expensive to run than a conventional, radiator-based system.
System startup
Once your system has been commissioned it should be fully operational. It will
be set up to the design temperatures, but it may need adjustment to suit the
preferences of the occupants. See Heat Pump User Guide for details. To initially
check that your system is turned on and working please follow these simple steps:
Underfloor heating
Locate the main components of your
installation: the heat pump, hot water
cylinder, underfloor heating pump/Optiflo manifold assembly(s), thermostats,
timeclocks, underfloor heating
wiring box.
Electricity supply
Ensure that the electrical installation is
complete and that the heating system
is turned on. The location of the main
supply ON/OFF switch may vary but is
often positioned next to the heat
pump. There may be additional switches
located at each underfloor heating
wiring box, which also need to be on.
Water supply
Ensure that the water is turned
on ready for domestic hot water
operation, check that a high flow of
water is available from the cold taps.
If there is poor flow or none at all,
check that the stop-cock for the
property is fully open.
For more information visit www.nu-heat.co.uk
5
Heat pump systems
Key differences between boiler and heat pump systems
Heat pump systems and boiler systems
are designed to operate very differently.
If you have only previously lived with a
boiler system it is useful to know the
differences to ensure the heat pump
system is set up and operated in the
most effective way.
The main differences will be in terms of
the temperature of water that the heat
source generates. A typical boiler
system would produce a constant flow
temperature, which could range from
60-80˚C. A heat pump, on the other
hand, has a more sophisticated control
system which adjusts the flow
temperature, typically 30–50˚C, so that
exactly the right amount of heat is fed
into the heating system to meet the
heat loss of the house at the particular
outdoor temperature.
Another difference is that the boiler
would have been oversized so that it
could raise the indoor temperature
from whatever it happened to be, up
to full comfort temperature. A heat
pump is sized to match the load at
design operating conditions, and so
does not have a surplus with which to
raise the temperature quickly.
These two differences mean that, with
a heat pump as the heat source, the
heating must be allowed to run
constantly, on a ‘tick-over’ basis, rather
than switching it on and off as required.
The implication of switching the
heating off, and then expecting it to
recover the house to full comfort
temperature is that it will not have
sufficient power output, and so will
have to call on the immersion heater
backup, which is a more expensive
method than the heat pump running
constantly.
Although not recommended for heat
pump systems, instructions for
programmable thermostats to allow
different temperatures to be set at
different times, are shown in this guide.
General principle of operation
SYSTEM OPERATION
SEASONAL ADJUSTMENTS
INSTANT HOT WATER
With a heat pump system thermostats
are supplied to ‘top-limit’ room
temperatures. This means that whilst
they are capable of stopping flow of
heating water to their zone, they
cannot raise the room temperature
beyond what the flow rate and flow
temperature will allow. If a higher room
temperature is required, adjustment
must also be made at the heat pump.
Underfloor heating should be left active
all year round as it is controlled by the
heat pump controller. See the Heat
Pump User Guide for detail of seasonal
adjustments.
Please see the EnergyMaster HP User
Guide for details of instant hot water.
When the thermostat is calling for heat
it opens the actuator(s) for that heating
zone, allowing heated water flow to that
zone.
LEAVING THE PROPERTY
UNOCCUPIED IN WINTER
The heating system pump and
temperature control are managed
jointly by the heat pump’s controller
and the room thermostats.
6
If you require to turn the heating off
(for example when servicing) always
use the main heating isolation switch.
Rather than turning the heating system
off, it is possible to leave background
heating on as frost protection. Each
room/zone has the facility to be set to
frost protection individually, however it
is better to use the heat pump controller
to effect frost protection to prevent the
controls conflicting.
For expert advice call us on 01404 549770
UNDERFLOOR HEATING OPERATION
Your underfloor system is designed for
performance and economy. Your
property may have been supplied either
with dial thermostats or programmable
thermostats.
Each heating zone is controlled by its
own wall-mounted thermostat.
Whilst programmable thermostats are
offered because customers like their
aesthetics, Nu-Heat strongly recommends that the temperature to which
they top limit should not be varied
through the day.
System adjustments
Note that this user guide describes adjustments to the underfloor heating controls. Adjustments to the
heat pump controller are covered in the Heat Pump User Guide.
When first setting up the system, it is recommended that all thermostats should be
set to the required temperature of 18˚C for bedrooms and 21˚C for other areas.
This will allow the heating system performance to be assessed.
Use the thermostat to establish whether the room temperatures are being achieved
(see the specific section on your thermostat type for information on gauging the
current room temperature).
• If the heating is reaching the set
temperature, but the room is still not
warm enough then the first stage is to
increase the thermostat setting. This
should be only by 1°C at a time. The
system should then be left for a day
before assessing the impact of that
change.
Please note that increasing the
temperature will increase the system
running cost.
• If the heating is not reaching the set
temperature in only a few rooms then
the flow rate to those rooms should be
increased, as described on page 8.
Unless you feel confident in adjusting
the flow rates then you should contact
your heating engineer, who can
investigate the cause of insufficient
heat.
• If the heating is not reaching the set
temperature in any room then the heat
pump controller can be adjusted.
Please see the Heat Pump User Guide
for details.
If after increasing the thermostat
setting the heating is still not warm
enough then the heat pump controller
settings can be altered. Please see the
Heat Pump User Guide for details.
If the weather is quite mild when the system is initially setup then further
adjustment may be required at a later date.
Once it has been determined that all rooms are reaching temperature then any
that are desired to be at a lower temperature can be regulated using the room
thermostat.
For more information visit www.nu-heat.co.uk
7
Adjusting the flow rates
1
MANIFOLD COMPONENTS
1
Flow gauges
2
Flow temperature gauge
9
3
Flow adjustment
4
Pressure gauge
5
Filling/drain off valve
6
Actuators
7
Manual air vent
8
Return temperature guage
9
Main isolating valve (flow)
10
Main isolating valve (return)
2
4
3
5
6
10
7
8
5
If additional heat is required in a selected room or rooms the water flow rate(s)
serving these areas can be increased.
To do this:
Shut
Open
When the system is operating, turn the
thermostat up in that room.
Identify from the pipe markings at the
manifold which actuator head(s) serves
the zone you want to change.
Note: If the zones are not clearly
marked, turn off all the other room
stats.
a– actuator
Flow
b – flow gauge
Increased
flow
The zone that is operating will be
indicated by a raised button on the top
of the actuator (a), and the flow gauge
will indicate a flow reading (b).
Please note that the button on the
actuator can take up to 3 minutes to
respond.
Each thermostatically controlled zone
may be fed by more than one pipe – in
each zone all pipes should have equal
flow.
The underfloor heating pump (c)
should be set to constant pressure
mode.
c – pump
8
For expert advice call us on 01404 549770
Turn the flow gauge – anti-clockwise
for more flow, clockwise for less. The
red flow indicator will drop further the
greater the flow rate.
Note: Adjust a little at a time to suit
your requirements – after a small
adjustment leave the system for
24 hours before making any further
adjustment.
Increasing the flow to one zone may
decrease the flow to others.
There is a limit to how much extra flow
can be achieved and if, after adjusting
one or several zones, further action is
required the flow temperature can be
increased. Please contact your heating
engineer to investigate.
See Heat Pump User Guide for details.
3
3
3
3
3
3
3
6
6
6
6
6
6
6
Pump settings
ELECTRICAL CONNECTION
air
1
1
air
1
1
The pump
is supplied with a pre-connected, 1-metre, 3-core lead ready for
3
3
connection to the Optiflo UFH wiring centre. Ensure that the pump is filled and3
vented, use
to call for heat and then select the correct pump setting.
6 the controls
6
3
6
6
air
SETTING THE CONTROL MODE
air
air
11
1
1
air
11
3
3
3
3
3
3
6
6
6
6
6
6
i
To select the control mode symbol and set the desired delivery head/constant
speed, turn the operating knob:
Variable pressure
DO NOT USE
Variable differential pressure (∆p-v): DO NOT USE
air
air
air
air
air
Constant differential
pressure (∆p-c): The
knob for
the control mode ∆p-c is set
1
1
1
1
1
1 1
1
on the right of the middle position. USE THIS SETTING
1
3
3
3
3
3
3
3
NOTE: All settings are retained if the mains supply is interrupted.
6
6
6
6
The LED indicator light
Continuous green light
1
1
6
3
3
3
3
6
6
6
6
6
Pump in air venting mode.
3
3
6
air
1
1
3
Pump working normally.
3
6
air
1
1
air
3
6
1
3
3
3
6
6
6
6
X
1
6
he venting function lasts 10 minutes and is indicated with quick green LED
2 T
blinking. Noises may be heard when the venting function is running. The
process can be stopped by turning the dial to the ‘constant pressure’ setting.
After 10 minutes, the pump stops and goes automatically into maximum
constant pressure mode. Should another setting
be required, the dial should
be
air
air
adjusted after venting function is finished.
1
1
1
1
6
6
6
6
air
1
1
1
1
3
3
3
6
6
6
6
6
3
3
6
6
Pump has stopped working
due to an internal reason –
see page 31.
air
air
3
3
P
3
1
air
1
3
3
3
6
6
6
o activate the venting function, turn the dial to the centre position; venting will
1 T
activate after 3 seconds.
3
NOTE: The venting function removes 3accumulated air
chamber of3
3 from the rotor
the pump. The venting function on the pump does not vent the heating system.
6
3
1
3
During automatic venting the
runs alternately
with high and
3
help air bubbles from the pump to agglomerate and to lead direct to the venting
6
6
6
valve of the installation.
6
6
6
6
6
1
1
3
low3speeds
to
3
3
6
Flashing red light
air
1
1
3
6
6
air
1
6
6
3
3
air
3
1
3
air
11
3
6
6
1 air
1
3
3
Pump has stopped working
due to an external reason –
see page 31.
1
pump3
31
1
1
3
air
1
11
air
1
1
air
1
air
VENTING
1
6
6
air
1
1
air
Flashing red/green light
Flashing green light
air
air
6
Constant pressure
USE THIS SETTING
1
1
3
6
1
1
3
3
6
6
3
6
air
1
1
1
3
3
6
6
air
3
6
Dial in centre with flashing green LED =
pump in venting routine mode
6
air
1
1
1
3
3
6
6
For more information visit www.nu-heat.co.uk
3
6
9
Systems with dial thermostats
CONTROLS
Call for heat = red
= yellow
Setback
Normal = green
3-position slide switch
Up: (1) ON
Mid: (timed) º
Down: (0) OFF
Turn dial to set temperature
DIAL
To set the maximum temperature, turn the dial to point to the desired temperature.
This is typically 21˚C for most rooms, except bedrooms which generally require a
lower temperature, e.g. 18˚C.
It is best to think about the thermostat as being ‘fine tuning’ for the heating system.
•
Nu-Heat recommends against making large adjustments – make any
adjustments in small increments, and wait for at least 24 hours to assess
the effect.
•
It is best not to turn the thermostat down, for example, when a room is not
in use – it can take a long time for the heat pump to increase the room
temperature again.
•
Note that turning the thermostat up very high will not cause the room to reach
that temperature – it just means that the heating will reach its maximum
capability, uninterrupted.
SLIDE SWITCH
The slide switch serves no useful purpose in heat pump systems. Because there is
no time control associated with the thermostats (timing is controlled by the heat
pump) switch positions 1 and º both put the thermostat into the on mode where
the dial setting will influence the actuator on the manifold. Position 0 switches the
thermostat into frost protection mode.
CHECKING THE ROOM TEMPERATURE
To assess the room temperature, turn the dial until the indicator changes from red
to green (or vice versa) and note where the dial is pointing. Return the thermostat
to the previous setting before making any adjustments.
10
For expert advice call us on 01404 549770
SENSORS
The heating system must be turned off and electrically isolated before changing
sensor switch settings.
Each thermostat has six sensor operation modes. These can be selected using
switches 1-3 accessible from the back of the thermostat, after removing the front
panel from the wall.
Internal air sensor: Uses the built in air sensor only.
ON
Set switches 1 to 4 OFF
Remote air sensor (if installed): Uses the remote air
sensor only.
ON
Set switch 2 ON, switches 1/3/4 OFF
Internal air sensor & floor limiting sensor (if installed): Uses the built in air sensor
but also uses the remote floor sensor to ensure the floor temperature doesn’t
exceed a chosen limit. Should the floor temperature be achieved (even if the
desired room temperature has not) the heating will turn off.
Floor temp. limit
Set switch 1 on, switches 2 and 3 OFF25˚C
Set switch 1 and 3 ON, switch 2 OFF
27˚C
Set switch 1 and 2 OFF, switch 3 ON
29˚C
ON
Set switch 1, 2 and 3 ON32˚C
Set switch 4 OFF always
For more information visit www.nu-heat.co.uk
11
Systems with neoStat or neoAir
In a heat pump system, it is the heat
pump controller that manages time
control, but programmable thermostats
are often chosen for their aesthetic and
ergonomic appeal.
In order to attain the best efficiency for the system it is strongly recommended that
the top-limiting temperature is not varied throughout the day.
A programmable room thermostat is both a programmer and a room thermostat.
A programmer allows you to set ON and OFF periods to suit your lifestyle. This
User Guide explains how to set the thermostat into non-programable mode
(see pages 20 & 25).
Room thermostats need a free flow of air to sense the temperature, so they must
not be covered by curtains or blocked by furniture. Nearby electrical appliances or
direct sunlight may also prevent the thermostat from working properly.
Nu-Heat strongly recommends against the use of a neoHub with a heat pump
system. The correct way to effect remote control with a heat pump system is
through NIBE Uplink.
OPTIONAL CONTROL FROM A SMARTPHONE – Pairing the neoHub (not recommended)
To pair the neoHub with the neoApp, follow these steps:
1Connect the power supply to the neoHub.
2Connect the neoHub to your router with the Ethernet
cable provided. The router will automatically assign an IP
address to the neoHub, the Link LED will light up once
the neoHub has connected to your network.
3Download the FREE Nu-Heat neoApp from the Apple App
Store, Google Play Store or Amazon App Store and
register an account.
4Once you have registered your account, press the LOGIN
button then press the ADD LOCATION option.
5Press the CONNECT button on the neoHub to add the
location to your account.
6When successfully connected, enter a title for the new
location (e.g. Home) and configure the time zone for the
system.
Pairing the neoStat
The next step is to pair the neoStat to the neoHub, we recommend pairing the neoStat located nearest to the neoHub first.
To add a neoStat, follow these steps:
1From the neoApp, select ADD ZONE, enter a zone title
and press ADD ZONE again.
3On the neoStat, use the < / > keys to select setup and
press 3. Feature 01 is displayed on screen.
2You now have two minutes to pair the neoStat to the
neoHub.
4Press the 3 key to pair the neoStat to the neoHub
5The MESH symbol appears flashing on the display.
Wireless communication
Where necessary, coverage can be extended using a neoPlug (available from Nu-Heat).
12
For expert advice call us on 01404 549770
Sharing access to the neo system (for systems with neoHub only – not recommended)
You can now share access to other users on a full or restricted basis.
Ideal uses for the new Share Feature
Admin or Guest?
• You have more than one member in your household.
Admin users have complete control. They can add and
remove zones, adjust heating times and temperatures and
can setup Geo Location.
•You rent out you home and want to give restricted
access to guests.
•You want to give temporary control to your heating
engineer or service partner.
To setup a Share Access, follow these steps:
1 Select Share Access
2 Press + to add a user
3 Enter the User Details and press User Mode
4 Select Admin or Guest
Guest users have temporary control – so they can adjust the
temperature using the scroll wheel but they cant reprogram
the heating times and temperatures or add and remove
zones. They also don’t have access to the Geo Location
feature.
Note: To use Geo Location – each user in the home must
have their own Share Account.
You can remove a user at any time by going in the Share
Access menu and selecting the Delete User option.
Pairing the neoPlug
neoPlug can reinforce wireless signals even if neoHub is not installed.
If neoHub is installed, then each neoPlug must be paired with it in order to perform all its functions.
1Plug in the neoPlug.
4Access can now be controlled from anywhere.
2Pair to neoApp using ADD ACCESSORY option.
To reset the neoPlug, press and hold the button for
10 seconds until the red LED starts to flash.
3When prompted, press and hold PAIRING button for
5 seconds. The green LED will start to flash, when paired
it will stay lit for 2 seconds, then go off. If pairing is not
successful, the green LED will flash continuously.
Geo-Location
Geo Location is not suitable for use with a heat pump.
For more information visit www.nu-heat.co.uk
13
Setting up neoAir
REPLACING THE BATTERIES
Batteries have a fixed lifespan and will need to be replaced occasionally to ensure the thermostat operates correctly.
Battery icon flashes
The thermostat will inform you when
the batteries need to be replaced by
displaying the battery icon on screen.
To access the battery holder, push and
release the compartment door located
on the bottom face of the thermostat.
Insert the batteries in the empty battery
holder, ensuring that each battery is
orientated for the correct polarity + / -.
4 x AAA batteries have been supplied
with this thermostat.
Push the battery holder back inside
the thermostat until it is secured in its
closed position.
Do not use rechargeable batteries with
this product!
14
For expert advice call us on 01404 549770
PAIRING WITH THE UH8-RF WIRING CENTRE – neoAir only
On the UH8-RF, take note of the numbers set on the rotary switches (UH8-RF ID
numbers 01-99).
Each UH8-RF on the system needs to have a different ID number.
Set your first UH8-RF to 01.
WARNING: Mains voltages are present within the wiring centre.
At the thermostat:
Example: Rotary Switch showing ID No. 99.
1
Use the < / > keys to scroll to SETUP and press 3 once. The display will now
show 01 in the top right hand corner.
2 Press the 6 twice so that P2 shows on the display. Press 3 once.
3Use the < / > keys to set the large digits to the board address of the UH8-RF.
This is the number set on the UH8-RF rotary switches (you must set a unique
board address for each UH8-RF installed).
4Press 3 once. Small digits in the top right hand corner of the display will now
flash.
5The UH8-RF is an 8 zone receiver. Use the 6/5 buttons to select the zone this
thermostat should be linked to.
6Press 3 to select zone type (Underfloor Heating).
7Use the 6/5buttons to select UF (Underfloor Heating).
8Press 3 to finish and confirm settings. Display will return to the main screen.
Wireless communication
Where necessary, coverage can be extended using a neoPlug (available from
Nu-Heat).
For more information visit www.nu-heat.co.uk
15
Systems with neoStat or neoAir cont.
MODE 1 – THERMOSTAT OPERATION
1
2
3
4
5
18
17
16
15
14
13
12
6
7
8
9
10
1 Day
10 Programme indicator
2 Mesh symbol
11 Main menu navigation
3 Floor limit symbol
12 Battery symbol (neoAir only)
4 Frost symbol
13 Temperature format
5 Flame symbol
14 Temperature (current)
6 Heat/Cool (neoStat only. Cool not active)
15 Cool on (not used)
7 Floor temp/Room temp
17 Holiday left
8 Set*
18 Hold left
16 Clock
9 Key lock indicator
11
*SET = Displayed when changes are being made to the program
schedule or current set point.
ERROR CODES
When used as a thermostat the screen will display an error code if a fault is
detected.
E0 = The internal sensor has developed a fault.
E1 = The remote FLOOR probe has not been connected. The remote FLOOR probe
has not been wired correctly.
The remote FLOOR probe is faulty.
E2 = The remote AIR probe has not been connected. The remote AIR probe has
not been wired correctly.
The remote AIR probe is faulty.
16
For expert advice call us on 01404 549770
COOLING
The cooling control feature is not used.
Temperature display
The unit can be configured for different sensor options such as remote air sensor,
floor sensor or both. The display will clearly indicate which sensor is
being used by showing either ROOM TEMP or FLOOR TEMP before the actual
temperature value.
When the unit is set to use both the air & the floor sensor, the room temperature
will be displayed by default.
1To view the current floor temperature, press and hold the < and > arrow keys
for 5 seconds, the floor temperature will then be displayed.
Setting the clock
To set the clock, follow these steps.
1 Use the < / > keys to scroll to clock
2 Press 3 to confirm selection
3 Use the 6/5 keys to set the hours (24 hour format)
4 Press 3 to confirm selection
5 Use 6/5 keys to set the minutes
6 Press 3 to confirm selection
7 Use < / > keys to set the day
8 Press 3 to confirm selection and return to the main display
Setting Non-Programmable Mode
Due to the key differences between heat pumps and boilers it is strongly
recommended that, for systems with heat pumps, the non-programmable mode
is selected for all thermostats.
For systems with neoHub this mode must be configured using the neoApp.
For systems without neoHub see page 20 for how to set this mode (Feature 12).
The neoStat offers three additional program mode options; Weekday/Weekend
programming, 7-Day programming and 24-Hour programming. These modes are
not recommended for use with heat pumps.
For more information visit www.nu-heat.co.uk
17
Systems with neoStat or neoAir cont.
Temperature control
1The 6/5 allow you to adjust the set temperature. When you press either key,
you will see the word SET and the desired temperature value. Use the 6/5
keys to adjust the set value.
2Press 3 to confirm settings and return to the main display.
Note: This new temperature is maintained only until the next programmed comfort
level. At this time, the thermostat will revert back to the programmed levels.
Temperature hold
he temperature hold function allows you to manually override the current
T
operating program and set a different temperature for a desired period.
1 Use the < / > keys to scroll to HOLD.
2 Press 3 to confirm selection.
3 Use the 6/5 keys to set the desired Hold period.
4 Press 3 to confirm selection.
5 Use the 6/5 keys to set the desired Hold temperature.
6 Press 3 to confirm selection.
You will see the HOLD LEFT indication is displayed on screen. The time will
countdown the set duration and then revert to the normal program.
To cancel a temperature hold, repeat these steps but reduce the HOLD time
to 00:00 hrs.
Locking the neoStat
The thermostat has a keypad lock facility. To activate the lock follow these steps:
1 Use the < / > keys to scroll to HOLD & press 3 for 10 seconds.
2 The display will show 00:00 and you will need to set a four digit pin number.
3 Use the 6/5 keys to enter the first two digits.
4 Press 3 to confirm.
5 Use the 6/5 keys to enter the second two digits.
6 Press 3 to confirm.
7 Record the 4-digit PIN number.
The display will return to the main screen and display the keypad lock indicator Ï
Note: The keypad lock indicator is only displayed when the lock is active.
Unlocking the neoStat
To unlock the neoStat press 3 once. The display will show 00:00 and you will need
to enter the four digit pin number you set previously.
1 Use the 6/5 and 3 keys to enter the first two digits
2 Use the 6/5 and 3 keys to enter the second two digits
The display will unlock and return to the main screen.
18
For expert advice call us on 01404 549770
Frost mode
1
Use the < / > keys to scroll to the POWER icon. The FROST icon will toggle
ON/OFF each time 3 is pressed.
In this mode, the neoStat will display the frost icon and will only turn the heating
ON should the room temperature drop below the set frost temperature
(see opposite).
If the heating is turned ON whilst in frost mode, the flame symbol will be displayed.
To cancel the frost protect mode, navigate to the POWER button again and press 3.
Note that the heat pump controller has a frost protection mode, and it is better to
use this if frost protection is required, to prevent the controls conflicting.
To change the frost setting temperature, see the Feature Table on page 29.
Power ON/OFF
The heating is indicated ON when the flame icon is displayed. When the flame icon
is absent, there is no requirement for heating to achieve the set temperature but
the neoStat remains active.
1To turn the neoStat off completely, scroll to the POWER icon and hold the 3
key for approximately 4 seconds until the display goes blank.
The display and heating output will be turned OFF. To turn the thermostat back ON,
press the 3 key once.
Holiday
Note that the heat pump controller also has HOLIDAY mode. It is recommended
that HOLIDAY mode is set on the heat pump controller, not via room thermostats.
In thermostat mode, the HOLIDAY function reduces the set temperature in your
home to the frost protection temperature setting (see opposite).
In time clock mode, the holiday function maintains the timed output as OFF. The
thermostat will maintain this setting for the duration of the holiday and will then
automatically return to the program mode on your return.
1 Use the < / > keys to scroll to holiday and press 3
2 Using the 6/5 keys enter number of days holiday
3Press 3 to confirm settings
Note: A holiday period does not start until 00:00 the next day. For example, if you
set a holiday period on Friday for 2 days, Saturday will be counted as the first day
and the thermostat will revert back to the programmed schedule at 00:00 on
Monday.
To cancel, repeat these steps but reduce the Holiday duration to 00 days.
For more information visit www.nu-heat.co.uk
19
Systems with neoStat or neoAir cont.
Adjusting the Optional Settings
To adjust the settings, follow these steps:
1 Use the < / > keys to select SETUP
2 Press 3 to confirm selection
3 Use the 6/5 keys to scroll through features
4 Use the < / > keys to adjust the setting within each feature
5 Press 3 to confirm settings
Setting value
Feature number
Feature Description
Recommended settings
Explanation
01
Pairing
Used to add zone to neoHub
Used to connect the thermostat to the neoHub
02
Switching
differential
00 = 0.5˚C
01 = 1.0˚C (Default)
02 = 2.0˚C
03 = 3.0˚C
Allows you to increase the switching differential of
the thermostat.
03
Frost protection
temp.
07˚ – 17˚C (12˚C = Default)
The temperature maintained when the thermostat
is in Frost Mode.
04
Output delay
00 – 15 Minutes (00 = Default)
To prevent rapid switching, an output delay can be
entered. This can be set from 00–15 minutes.
05
Up/Down Temp.
limit
00˚ – 10˚C (00 = Default)
Limit the use of the up and down temperature
arrow keys. This limit is also applicable when the
thermostat is locked and so allows you to give
others limited control over the heating system.
06
Sensor selection
00 = Built in Sensor (Default)
01 = Remote Air Sensor
02 = Floor Sensor Only
03 = Built in & Floor Sensor
04 = Remote Air & Floor Sensor
Selects the active sensors. The floor sensor is used
as a floor limiting sensor to prevent the floor from
overheating.
07
Floor Temp. limit
20˚C - 45˚C (28˚C = Default)
Available when feature 06 is set to 02 or 03.
Set to the required floor temperature limit
(see instructions on page 11)
08
Optimum Start
00 – 05 Hours (00 = Default)
Adjusts the start time within the preheat range
to allow for current conditions. Heating is
brought on before the start time, but at the latest
possible moment to avoid unnecessary heating
whilst ensuring that the building is warm at the
programmed time.
09
Rate of change
Minutes to raise by 1˚C
This setting is calculated by the thermostat.
Number of minutes for 1˚C temperature rise.
10
Cool enable
00 = Disabled
11
Cool set temp
Not enabled
12
Program mode
00 = Non–Programmable
01 = Weekday/Weekend (Default)
02 = 7 Day Programming
03 = 24 Hour Mode
Modes 01, 02 and 03 are not
recommended for heat pump systems
13
20
Setting 04 is for neoStat only.
Temp. format
00 = ˚C; 01 = ˚F (00 = Default)
For expert advice call us on 01404 549770
Weekday/ Weekend – 4 comfort levels for the
weekday and 4 different comfort levels for the
weekend.
Day Program Mode – Each day has 4 comfort
7
levels that can be programmed independently.
24 Hour Mode – All days are programmed the
same and repeat continuously.
Select between ˚C and ˚F.
Re-calibrating the thermostat
Factory reset
Warning: The thermostat must be fixed in a wall. When
re-calibrating the thermostat avoid warming it with your
hands or breath, as this will cause an inaccurate setting.
To return all settings to their factory default:
To re-calibrate the thermostat, follow these steps:
1 Use the < / > keys to scroll to the POWER icon
2 Press and hold 3 to turn the display OFF
1 Use the < / > keys to scroll to SETUP
2Press and hold the 3 key for 10 seconds. All of the icons
on the display will appear for 2 seconds, then the display
will show option 1 or 2.
3 Press and hold the 3 and 6 keys together for 10 secs
3Use the < / > keys to scroll between modes (selection will
flash)
4 The current temperature will appear on the display.
Mode 1 = Thermostat
5 Use the 6/5 keys to configure the new temp value
Mode 2 = Time Clock (do not select)
6 Press the 3 key to confirm change and the display
will go blank
4 Press the 3 key to confirm selection
7 Press the 3 key once to turn the thermostat ON
The thermostat will revert to the main display screen for the
selected mode.
Note: Factory reset will cancel all parameters that were
entered during the set-up and pairing operations. These
processes must be repeated after factory reset is completed.
Setting thermostats to be Non-Programmable (recommended with heat pump systems)
Set Feature 12 on all thermostats to 00 Non-Programmable.
Setting the heating periods and temperatures (NOT recommended with heat pump systems)
The neoStat offers three program mode options: Weekday/Weekend programming, 7 Day programming and 24 Hour
programming. There is also the option to use the thermostat as a Non-Programmable thermostat.
When thermostats are connected to the mesh network, the program mode for the system is configured by using the neoApp.
The thermostat is supplied with comfort levels already programmed, but these can be changed easily. The default times and
temperature settings are;
07:00 / 21˚C (wake)
09:00 / 16˚C (leave the house)
16:30 / 21˚C (return home)
22:00 / 16˚C (sleep)
To program the comfort levels, use the < / > keys to scroll to EDIT
1Press 3 to confirm selection
9Press 3 to confirm
2Use the < / > keys to select day / period of week
(the selection will flash).
10Use the 6/5 keys to set the temperature
11Press 3 to confirm the settings
3Press 3 to confirm selection
12 Press the > arrow key
4
1 will flash and current time and temperature setting
will be shown.
13
2 will flash and current settings will be displayed.
5Press 3 to alter wake settings
6 Use the 6/5 keys to set the hours
7Press 3 to confirm
8Use the 6/5 keys to set the minutes
14Press 3 to alter leave settings
15Repeat these steps to set all comfort levels.
16For any unused periods set time to --:-17Use the < / > keys to scroll to done and press 3
For more information visit www.nu-heat.co.uk
21
Servicing requirements
MONTHLY
ANNUALLY
AS REQUIRED
Check the expansion vessel water
pressure as displayed on the gauge,
the pressure should normally be
between 1 bar and 2 bar depending
on whether the system is cold or hot.
Underfloor heating
Whilst there is no requirement for
annual servicing it is important that the
level of central heating inhibitor is
sufficient to protect the system.
Replacing the batteries (neoAir only)
See instructions on page 14.
Please see the Heat Pump User Guide
for details of annual system servicing
requirements.
22
For expert advice call us on 01404 549770
|||
ERP
Y
FICIENCY
EF
G
TIN
RA
The heat pump control system is rated as Class III under Section 5.2.1.2
Temperature control, of EU Commission Delegated Regulation No. 811/2013.
ENER
G
Energy efficiency (ErP)
ENER
G
ERP
ERP
Product support
For further information on the operation of your underfloor heating system and
troubleshooting help, please visit the Nu-Heat website at nu-heat.co.uk.
For more information visit www.nu-heat.co.uk
23
Online
www.nu-heat.co.uk
Follow us
@nuheatuk
See our videos
/nuheatuk
Telephone
01404 549770
Nu-Heat UK Ltd I Heathpark House I Devonshire Road I Heathpark Industrial Estate I Honiton I Devon EX14 1SD
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