iSNATCH 49.6935.33 Digital Thermostat User Manual
- June 14, 2024
- iSNATCH
Table of Contents
iSNATCH 49.6935.33 Digital Thermostat User Manual
Introduction
Congratulations on the purchase of your new Digital Thermostat. Thanks to the latest microprocessor technology, the thermostat offers many convenient and energy-saving features. Please read the following instructions fully before installing your thermostat.
Overview of features and functions
Your Digital Thermostat incorporates preset daily programs to suit different
user lifestyles. The thermostat can be programmed easily to accommodate
existing user needs. The thermostat is powered by 2 x AA batteries and can
replace most domestic thermostats.
Cautions! The digital thermostat has been designed to switch to a 230VAC
power supply. The maximum load is 6 Amps (resistive) / 2 Amps (inductive).
Installation
Caution! Electricity can be lethal. Before beginning any work, ensure that the electricity supply is switched off at the mains. If in any doubt, consult a qualified electrician. If you currently have a thermostat connected by 2 wires, you can replace it directly with your new Digital Thermostat. If not replacing an existing thermostat, you will need to install a 2-wire cable to your heating system.
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Before carrying out any installation work, choose an appropriate location for the Thermostat using the following guidelines:
- Mount the Thermostat approximately 1,6m above the floor.
- Only mount on interior walls (thermostat is not for outdoor use)
- Avoid any location where the Digital Thermostat could be exposed to direct sunlight.
- Avoid any location in proximity to a heater, cooker, or ventilation outlet.
- Avoid any location where there may be concealed, boilers, pipework or chimney flues.
- Mount away from doors, and corners of rooms.
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Detach the front cover by sliding it to the left. Remove the screw in the battery compartment. Open the front housing from the base by lifting from the left-hand side.
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Unscrew the retaining screw to open the protective cover. (See Fig. 2.2)
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If fitting this thermostat to an existing system, the thermostat base must completely cover the hole in the wall.
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If the thermostat doesn’t cover the hole, then fit an intermediate plate over the hole to reduce its size. The plate should be made from insulating materials such as wood or plastic.
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When positioning the thermostat check the wires that come in through the protective cover hole.
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Connect the two wires to terminals 1 & 2. See Fig 3.1
Note! If the existing installation has neutral or earth conductors, these must not be connected to the Digital Thermostat. -
They must be made electrically safe.
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Reattach the protective cover to the Digital Thermostat’s base and secure it with the retaining screw.
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Reattach the front housing to the Thermostat’s base and secure it with the retaining screw.
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Insert 2 x AA batteries making sure they are the right polarity as indicated and replace the front cover.
Note: when replacing the batteries, the programs are held in memory for 20 sec. only. -
Press the RESET key once and ensure the Thermostat is in the INITIAL mode.
LCD (Fig 4.1)
Familiarise yourself with the LCD panel and the keys before programming.
Keys (Fig 4.2)
- To reset the unit to INITIAL mode To enter programming mode
Operation and Programming
To set the clock and Day
After inserting the batteries, or pressing the RESET key key is pressed. The
thermostat will enter in TIME ADJUSTMENT mode and the HOUR will start to
flash. Press the to adjust the Hour setting.
Press the key to confirm the setting. The MINUTE will now flash, press to
adjust MINUTE. Press the key to confirm the setting. The DAY will now flash,
press to adjust DAY. Press the key to confirm the setting. This will confirm
the setting of the clock and day. The display will return to running mode. The
display will appear as shown in Figure 5.1.
The Digital Thermostat is a weekly programmable device, with 7-day/24-hour programs that can be set as required. For each hour you can set the Thermostat so that either the CT (COMFORT) or ET (EVENING) temperature mode operates. The Thermostat comes with a pre-installed program that will accommodate many users’ requirements (See Figure 5.2).
Reviewing preset Program
To review the settings for the pre-installed program, press to enter the
PROGRAMMING mode. The preset program for Monday will show – 0:00. Press to
show the temperature mode setting (either COMFORT or EVENING) for each hour.
For example, the Monday program has
(EVENING temperature mode) 0.00 to 5.59 (Midnight to 5.59 am) and 8.00 to
15.59 (8 am to 3.59 pm).CT (COMFORT temperature mode) 6.00 to 7.59 (6 am to
7.59 am) and 16.00 to 22.59 (4 pm to 10.59 pm).
Note: 23.00 to 0.00 is set to ET (EVENING temperature mode). Press the
key and the next day’s temperature setting will be displayed. Use the keys to
show which temperature mode is operating for each hour. Repeat this procedure
until Sunday has been reached. Press the key to return to the running mode.
Changing the preset program
The preset program can be adjusted to meet your requirements. Press the key to
enter the PROGRAMMING mode. Press the key to select the day you wish to adjust
the program for. Use keys to select the hour you wish to adjust the program
for. Press or to change the temperature mode. For example, to change 12 pm to
4.59 pm on Saturday from COMFORT to EVENING temperature:
- Press the key to enter the PROGRAMMING mode.
- Press the repeatedly until Saturday is displayed.
- Press the key repeatedly until 12.00 with CT is displayed.
- Press key CT change to ET.
- Press the key to the display to advance to 13:00 and press the so that CT changes to ET. Press the key to confirm the setting. The display will advance to Sunday
- Press the key again to return to RUNNING mode.
Note: don’t set a program using 0.00 as either a start or end time. Set
programs to begin or end at 23:00 or 1:00.
The Thermostat may not operate correctly if 0:00 is used.
Viewing and Changing the preset temperatures
- Each temperature mode is set at the following values
- Press the key to view CT or ET temperature mode.
- Press to view the CT setting or to view the ET setting. With the temperature setting flashing, press to change the temperature setting. Press the key to confirm the setting and return to the RUNNING mode.
Setting the temporary manual override for temperature
- Temporary manual override allows you to override the existing temperature setting for any period from 1 to 48 hours.
- Press the keys to enter the MANUAL OVERRIDE TEMPERATURE mode. The temperature on the LCD will flash.
- Use to set the desired temperature.
- Press to confirm the new temperature. H1 will show on the LCD panel and flash (indicating a 1-hour override). Use the key to increase this up to a maximum of 48 hours as required. Press to confirm.
Press the key to view CT or ET temperature mode
Press to view the CT setting or to view the ET setting. With the temperature
setting flashing, press to change the temperature setting. Press the key to
confirm the setting and return to the RUNNING mode.
Setting the temporary manual override for temperature
Temporary manual override allows you to override the existing temperature
setting for any period from 1 to 48 hours. Press the keys to enter the MANUAL
OVERRIDE TEMPERATURE mode. The temperature on the LCD will flash.
Use to set the desired temperature
Press to confirm the new temperature. H1 will show on the LCD panel and flash
(indicating a 1-hour override). Use the key to increase this up to a maximum
of 48 hours as required. Press to confirm.
Press the key to view CT or ET temperature mode
Press to view the CT setting or to view the ET setting. With the temperature
setting flashing, press to change the temperature setting. Press the key to
confirm the setting and return to the RUNNING mode.
Setting the temporary manual override for temperature
Temporary manual override allows you to override the existing temperature
setting for any period from 1 to 48 hours. Press the keys to enter the MANUAL
OVERRIDE TEMPERATURE mode. The temperature on the LCD will flash. Use to set
the desired temperature. Press to confirm the new temperature. H1 will show on
the LCD panel and flash (indicating a 1-hour override). Use the + key to
increase this up to a maximum of 48 hours as required. Press to confirm.
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