Sunvic SunStatRF User manual

SunStatRF Installation Instruction Leaflet: LE/0222/7051/0002/04 Page 1 of 3
Installation Instructions
What is a programmable room thermostat?
A programmable room thermostat is both a programmer and a
room thermostat. A programmer allows you to set 'On' and 'Off'
time periods to suit your own lifestyle. A room thermostat
works by sensing the air temperature, switching on the heating
when the air temperature falls below the thermostat setting,
and switching it off once this set temperature has been
reached.
So, a programmable room thermostat lets you choose what
times you want the heating to be on, and what temperature it
should reach while it is on. It will allow you to select different
temperatures in your home at different times of the day (and
days of the week) to meet your particular needs.
Turning a programmable room thermostat to a higher setting
will not make the room heat up any faster. How quickly the
room heats up depends on the design of the heating system,
for example, the size of boiler and radiators.
Neither does the setting affect how quickly the room cools
down. Turning a programmable room thermo stat to a lower
setting will result in the room being controlled at a lower
temperature, and saves energy.
The way to set and use your programmable room thermostat is
to find the lowest temperature settings that you are
comfortable with at the different times you have chosen, and
then leave it alone to do its job. The best way to do this is to
set low temperatures first, say 18°C, and then turn them up by
one degree each day until you are comfortable with the
temperatures. You won't have to adjust the thermostat further.
Any adjustments above these settings will waste energy and
cost you more money.
If your heating system is a boiler with radiators, there will
usually be only one programmable room thermostat to control
the whole house. But you can have different temperatures in
individual rooms by installing thermostatic radiator valves
(TRVs) on individual radiators. If you don't have TRVs, you
should choose a temperature that is reasonable for the whole
house. If you do have TRVs, you can choose a slightly higher
setting to make sure that even the coldest room is comfortable,
then prevent any overheating in other rooms by adjusting the
TR V s.
The time on the programmer must be correct. Some types
have to be adjusted in spring and autumn at the changes
between Greenwich Mean Time and British Summer Time.
You may be able to temporarily adjust the heating programme,
for example, 'Override', 'Advance' or 'Boost'. These are
explained in the manufacturer's instructions.
Programmable 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 electric fires,
televisions, wall or table lamps may prevent the thermostat
from working properly.
INTRODUCTION
The SunStatRF is a wireless programmable room thermostat. A
SunStat should be purchased if a wired version of the same unit is
required.
Thermostat position
The thermostat should be placed at a height of 1.5m from the floor.
Do not position on an outside wall, above a radiator, next to a door, or
in direct sunlight.
For fixed wiring only
Disconnect the mains supply before attempting to wire the unit, or
removing unit from back plate. A switch having a contact separation
of at least 3mm in all poles must be incorporated in the fixed wiring as
a means of fully disconnecting the mains supply. An appropriate fuse
should also be fitted to the circuit.
WARNINGS
All installations should be carried out by a
competent person and in line with current
wiring regulations.
The covers must not be removed from any
part of the units before the electrical supply
has been isolated.
Interference with sealed parts will render the
guarantee void.
The SunStatRF Programmable Room Thermostat
Installation Notes
The manual override button on the SunStatRF receiver is
only operational when the RF link has not been
established.
When the RF link has been established the unit can be
commissioned by adjusting the temperature up and down
on the main SunStatRF unit.
If the batteries need to be changed the RF link may be lost.
In such an instance the manual override will become
active. This feature can be temporarily used by the
householder if they do not have new batteries until the
batteries have been changed.

SunStatRF Installation Instruction Leaflet: LE/0222/7051/0002/04 Page 2 of 3
1. Remove the back-plate from the thermostat by loosening the
retaining screw on the left hand side of the unit before
separating the unit.
2. Fix the back-plate to the wall with the screws and, if required,
the rawplugs, provided.
3. The following jumper links / switches, located inside the main
unit, should be set prior to starting the installation process.
JP10 - Heating & Cooling
The SunStatRF will be set to “heating” at the factory.
JP13 – TPI / ON/OFF
The SunStatRF will be set to “PI” at the factory. JP3 will be set to
“PI” at the factory. The ON/OFF setting is used if you do not wish
TPI control to be activated (i.e. the unit operates like a
conventional programmable room thermostat)
SW1 – RF Link
The 4-gang DIP switch is used to select different RF codes. This
allows multiple SunStatRF units to be used in the same building
(e.g. block of flats - a different RF code would be selected for each
flat). All 4 switches on the SunStatRF will be set to the “OFF”
position at the factory. If an RF code, different from the default
value, is required the position of the switches should be noted as
the same switch positions will require to be set on the receiver
before an RF link will be established.
4. Fit the “AA” batteries (x2), provided, into the battery
compartment of the main unit, taking care to orientate them
correctly.
5. Fit the main unit to the back-plate and tighten the screw on the
left hand side of the unit.
6. The unit is now ready to be programmed.
7. Fix the receiver back-box to the wall with the screws and, if
necessary, the rawplugs, provided.
8. Route the wires through the back of the receiver back-box.
9. Remove the front panel of the receiver by loosening the retaining
screw at the top of the unit.
10. Connect the wires to the main part of the receiver in accordance
with the diagram below and current Wiring Regulations.
11. Fit the main part of the receiver to the back box with the screws
provided.
12. Before fitting the receiver front panel, select the position of the 4
DIP switches (the same selection will be used on the main
thermostat unit to enable the RF link).
13. It is necessary to Reset the unit, prior to the initial programming.
This also resets the program times to the factory settings
To Reset the unit:
a) Ensure that the rotary switch is in the “START”
position.
b) Press both the and buttons, at the
same time for approximately 3 seconds until “dEL” is
displayed on the screen.
c) Move the rotary switch away from the “START”
position and then return to the START” position.
d) The unit has now been reset to the factory default
settings.
1 Note the “Reset” button on the front panel is used to reset the
operating time only.
Adjusting TPI Settings
TPI is enabled or disabled by the installer by means of a jumper
link (JP3) inside the thermostat.
If TPI has been enabled by the installer then 3 settings can be
adjusted:
a) The minimum firing time of the boiler
b) The number of boiler cycles per hour
c) The control temperature bandwidth
1) Spin the rotary selector to “START”
2) Press and hold both and at the same time for 3
seconds to enter the setting mode.
3) The display will show or the previously
set value
ON
OFF
1 23 4
SW1
54 3 2 1
~
L N
Cool
Heat
JP1
ON/OFF
PI
JP3
ON
OFF
1 2 3 4
SW1
Battery Compartment SW1
JP10
JP13

SunStatRF Installation Instruction Leaflet: LE/0222/7051/0002/04 Page 3 of 3
4) 5 selections are possible (1 – 5 minutes) the default setting is
1 minute.
5) Press or to set the desired duration of the
minimum boiler firing time.
6) Press to save desired duration of the minimum boiler
firing time and enter the number of boiler cycles per hour
setting.
7) 4 selections are possible (3/6/9/12). The default setting is 6
boiler cycles per hour.
8) The display will show or the previously
set value.
9) Press or to set the desired number of boiler
cycles per hour.
10) Press to save the desired number of boiler cycles per
hour and enter the control temperature bandwidth setting.
11) The control temperature bandwidth range is 1.5°C – 3.0°C in
steps of 1°C. The default setting is 1.5°C.
12) The display will show or the
previously set value.
13) Press or to set the desired temperature
bandwidth.
14) Press to save the desired temperature bandwidth and
return the thermostat to normal operation.
15) Suggested TPI Settings
Equipment Type Cycles per Hour Minimum firing time
Gas boiler < 30kW 6 1
Oil boiler 3 4
Zone valve 6 1
Electric Heating < 16A 12 1
If TPI has been disabled by the installer then only a switching
differential (hysteresis) can be selected.
16) Spin the rotary selector to “START”.
17) Press and hold both and at the same time for
3 seconds to enter the hysteresis setting mode.
18) 4 selections are possible 0.5, 1.0, 2.0 or 4.0. The default
setting is 1.0°C.
19) Press or to set the desired switching
differential.
20) Press to save the desired switching differential and
return the thermostat to normal operation.
Temperature Calibration (Offset)
It is possible to offset the temperature sensor within the
thermostat. This can be used, for example, where the thermostat is
positioned in a cold part of the room. In such a case the
temperature offset can be used to increase the display
temperature such that it is more representative of the actual room
temperature.
1) Spin the rotary selector to “Monday”
2) Press and hold, at the same time, and for 3
seconds to enter the offset setting mode.
3) The offset can be set between -4°C to +4°C in steps of 0.2°C.
The default value is 0.0°C.
4) Press or to select the desired offset value.
5) Press to save the desired offset value.
6) Spin the rotary selector to “START” to return the thermostat to
normal operation.
7) The thermostat will now display the temperature, including the
offset value. Due to the nature of the software it can take up to 3
minutes for the display temperature to change to the new setting.
Locking the Thermostat
The thermostat has a locking facility. This can be used to prevent
unauthorised personnel tampering with the thermostat.
1) Spin the rotary selector to “Saturday”.
2) Press and hold, at the same time, and for 3 seconds
to lock the thermostat display.
3) A will appear on the display
4) All controls are now locked.
5) Spin rotary selector to “START” to allow the thermostat to
operate.
6) To remove the lock repeat the above procedure and
will disappear.
Safe Disposal
SUNVIC CONTROLS Ltd.
Units 1 & 2, Block 1
251 Low Waters Road
Cadzow Industrial Estate
Hamilton
ML3 7QU
Tel. [phone]
Fax [phone]
Technical Helpline [phone]
N.B. In line with a policy of continuous product development,
SUNVIC CONTROLS Ltd. reserves the right to change the
specification, design and materials of products without prior notice.