I WARM 730 Operating manual

730

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Table of contents:
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Controls and display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Managing and operating . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Switching thermostat on/off . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Blocking and Deblocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Shifting the heating zones . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Temperature adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Switching one of the heating zones off . . . . . . . . . . . . . . . . . . . 10
Selfdiagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Heating management mode without floor temperature sensor . . . . 12
Using various heating management modes simultaneously . . . . . . 14
Thermostat installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Delivery set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Installation and connection . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 23

ATTENTION!
Read the present manual carefully before using the device.
NOTE!
Find connection diagram and device installation directions in
the Installation manual.
We recommend you to use the services of professional people
for thermostat and heating system installation. Ask a qualified
electrician to perform all connections and power networking
of the device.
Manufacturer's guarantee does not cover device's malfunc
tions caused by mechanical damage, improper installation, or
exploitation for purposes or under conditions not provided by
User and Installation Manual.
3

Introduction
Congratulations! You have purchased a new IWARM heat
management system.
The IWARM 730 thermostat series have inherent fea
tures that are highly reliable, easy adjustment, simple display
and modern design.
IWARM 730 will make the heating in your home more
efficient, most comfortable, easy and convenient at use.
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Functional description
IWARM 730 thermostat is designed to manage
"Warmfloor" (heating mats or cable sections) electrical heat
ing systems for two separate areas. The device automatically
maintains the comfortable temperature set by you, using the
readings of floor temperature sensors (included); these sen
sors are located in two various heating zones (in two areas).
Floor temperature (actual and set by you) is indicated on the
display.
IWARM 730 performs selfdiagnosis. In the event floor
temperature sensor has a malfunction, it will display a warn
ing messages (see page 11 for details). In this case the
device may work in socalled "service mode" of heat man
agement (see page 12 for details).

Controls and display (fig.1)
1. Symbol for heating system switched on mode.
2. Chosen heating zone No. display.
3. Current floor temperature in the chosen zone (°С).
4. Set temperature (°С) in the chosen zone.
5. "+"key for temperature increase.
6. "–"key for temperature decrease.
7. Key to shift the heating zones.
When the heating is on, a symbol for heating system
switched on mode appears on the screen. When the heating
is switched off the symbol disappears.
Capital figures show the actual current floor temperature
of the chosen zone (position 3); figures in top right show the
set floor temperature in this zone (position 4).
The set temperature may be changed by pressing "+" key
to increase (position 5), and "–" key for decrease (posi
tion 6).
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Fig.1 Controls and display
3
2
1
6
4
7
5
Pressing the ZONE/AAkey (position 7) once will shift the
heating zone in order to manage temperature settings in each
zone.

8
Managing and operating
Switching thermostat on/off (Automatic Mode)
To switch the thermostat on/off you should press and hold
the central key (ZONE/AA) for not less than 3 sec. The device
goes into the main display mode (fig. 2).
Blocking and Deblocking
The device is equipped with key blocking to protect it from
children and accidental pressing. The blocking switches on
automatically in 40 sec. after the last pressing of any key; the
display highlight dims.
Fig. 2 Main display

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In order to deblock the device, you should press and
hold simultaneously "+" and "–" keys for not less than
3 sec. After it the blocking mode is switched off, and the
display lights up.
Alternating the heating zones (Fig. 3)
In order to alternate between the heating zones (heated
areas) you should press the central key (ZONE/AA). At this
time the zone symbol will change (fig. 3). Capital figures show
the actual current floor temperature in the chosen zone
Fig. 3 Shifting the heating zones
Heating zone display

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(area), small figures at top right show the temperature set in
this zone.
Temperature adjustment
Choose area by pressing ZONE/AA. Enter the required
temperature using "+"/"–" keys.
Now the system will maintain the set temperature auto
matically by heating up the floor and switching off when the
set temperature is reached. Thus energy saving system
usage is performed.
Switching one of the heating zones off
In order to switch off the heating in one of the areas you
should set minimum temperature in this area, i.e. +5ОС.

11
Selfdiagnostics
The thermostat controls constantly the working capacity
of the temperature sensors. In case any of them is out of
order (break or short circuit of leads takes place), the ther
mostat switches off heating of this zone and displays warn
ing messages (fig. 4). You should apply to the nearest serv
ice center for repair or changing the temperature sensor
(the addresses are given in the heating system installation
manual).
Fig. 4 Selfdiagnostics warning messages

Heating management mode without floor temperature
sensor ("service mode") (Fig. 5)
In case of floor temperature sensor failure in one of the
zones the thermostat switches the heating off. If it is still
required to heat the areas (e.g. it is the main source of heat
ing in winter period), it is possible to manage the heating
without a sensor until the working capacity of the sensor is
restored (socalled "service mode"). In order to switch to this
mode you should press and hold "+" and "–" keys for not less
than 15 sec. in emergency indication mode.
At this time a symbol of manual heating management
mode appears, capital figures on the display show what per
centage of its installed power the system outputs in average.
12
Fig. 5 Display in heating management mode
without floor temperature sensor

13
This percentage may be adjusted by pressing "+" and "–"
keys; the changes are shown on the display.
In this mode the power is managed the following way:
a unit time is divided by the time the heating is in on and off
modes. The unit time is one hour. Accordingly, if the 50%
power is set, the heating will be switched for 30 min., and
then before the period ends it will be switched off for 30 min.
if 10% power is set, the heating will be on for 6 min. and off 
for 54 min.
ATTENTION!
To avoid overheating of the heating cable and therefore possi
ble heater damage, we do not recommend to use service mode
for more than 7 days.
Each time it is switched on the device will remind you about the
failure. You should apply to the service center as soon as possi
ble to repair or change the temperature sensor.

14
Using various heating management modes
simultaneously
IWARM 730 allows to use both automatic and service
modes simultaneously (one mode for each controlled area).
In this case the "service mode" zone will be displayed on the
screen (fig. 5) even though two separate modes are running
simultaneously. At the same time it will be possible to use
automatic mode in the other zone (fig. 2).
Thermostat installation
The thermostat delivery set
1. IWARM 730 thermostat . . . . . . . . . . . . . . . . . 1 pc.
2. Floor mounting temperature sensor
with connection cable 2 m long . . . . . . . . . . . . . 2 pcs.
3. External terminal block for earthing
line connection . . . . . . . . . . . . . . . . . . . . . . . . . . 1 pc.
4. User and installation manual . . . . . . . . . . . . . . . 1 pc.
5. Packing box . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 pc.

15
Installation and connection
IMPORTANT!
Switch off the wiring before installing a thermostat whether
checking or replacing. A qualified electrician must perform
electrical connections and device connection to the heater.
The manufacturer's guarantee doesn't cover malfunction due
to incorrect connections/installation of the unit.
Please study the present manual carefully before commence
ment of all electrical connections.
Tools and materials required for thermostat installation:
1. Corrugated plastic tube 12–16 mm in diameter; the
length depends on distance between the thermostat and the
both sensors of temperature
2. Double size junction box for wall mounting units
3. Flat head screwdriver
4. Crosspoint screwdriver

INSTALLATION OF FLOORMOUNTING TEMPERATURE SENSORS (Fig. 6)
Installation of floor temperature sensors is performed
when heating mat or section is being installed. In each area
its own temperature sensor is installed. The sensors installa
tion is performed via a junction box. The sensors are placed
in corrugated plastic tube. The end face of the tube is to be
sealed to prevent penetration of tile fixing mixture or cement
mortar in the course of heated floor arrangement. The end of
the corrugated tube with a sensor inside is placed approx.
50 cm away from the wall, at the height of the heating cable
centrally located between loops. If required the plastic tube
can be placed within a channel in the floor to minimize overall
height. It is recommended that the temperature sensor is
placed through the corrugated tube in the event access is
required to the floor sensor. Should the floor sensor cable
require extending this is possible up to a maximum of
25 metres.
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Fig. 6 Installation of floor temperature sensor

INSTALLATION OF THERMOSTAT
Preparing electrical connectors
Locate position of your junction box then terminate cold
tails for heaters and cable connections for floor sensors.
Perform all works regarding thermostat connection only
when the power supply is switched off. All the cables are to
be connected to the device terminal contacts with screw
fastening (See figure 7 for wiring connections).
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External
terminal
contact
Network
earthig
conductor
21
Sensors of temperature
Zone 1
Phase Zero
240 VAC 240 VAC
Zone 2
Single-core heating cables/mats
21
Network
earthig
conductor
Sensors of temperature
Zone 1
Phase Zero
240 VAC 240 VAC
Double-core heating cables/mats
External
terminal
contact
Fig. 7 Scheme of connection to the triplewire
electric network

20
To install a thermostat you should take off the front cover
of the device. To do this, slightly push the locks one by one
(which are situated at the top and at the bottom of the front
cover) using thin screwdriver. At this time pull the front cover
out (Fig. 8). Take off the front cover and the frame (Fig. 9).
Fig. 8 Taking off the device cover
locks
frame
cover