TEC 100 User manual

TEC 100/200 Programming
& Installation Manual
As of software v7.2
Total Energy Controls

2
Contents
Description Page
Installation Instructions
GeneralNotes 3
MainsWiring 3
Control Wiring 4
Other Wiring Options 5
Fitting and Wiring Temperature Sensors 6
Temperature Display Calibration 8
Commissioning Instructions
Introduction 9
Keypad Overview 9
Establishing the System Max Flow Temp 11
Setting the Programs 12
Setting the Calendar 12
Programming the On / Off Times 14
Frequency (How the Time Clock works) 16
SelectDays 17
OptimiseOnTime 18
Optimise Off Time 19
Setting the Maximum Flow Temperature 20
Setting the Minimum Flow Temperature 21
Setting the Minimum Return Temperature 22
Setting the Mid Temperature 23
Setting the Night Temperature 24
Setting the Frost Temperature 25
Setting the External Cut-Off Temperature 26
The Plant Relay 27
HotWaterPriority 28
Internal / External Optimisation 29
Calibration 30
Rotation 32
Exiting Programming Mode 33
TEC 100/200 with Monitoring Socket
Monitor Installation and Operation 34

3
Installation
General Notes
The installation of all TEC units should be carried out by a qualified electrical
engineer familiar with heating systems and control wiring.
All control circuits of TEC units are ‘volt free’ and may be used to switch
240V AC or low voltage control systems.
Extreme care must be taken to ensure that all wiring is correct before applying
power, as irrepairable damage to the PCB could result due to incorrect
connections.
Mains Wiring
Unscrew the four screws of the TEC 100/200 and remove the lid to gain access
to the PCB and wiring connections.
A 240V AC 1Ph 50Hz supply may be taken from the existing time clock
switched or permanent supply, or direct from the boiler mains input connections
(where available), which ever is the most suitable. The 240V connection to the
TEC 100/200 is shown in Fig.1 below.
240 V Supply as described
TEC 100/200 PCB
EL
N
Fig. 1

4
Control Wiring
NOTE: If a wiring harness is provided in the rear of the enclosure please
follow cables to TEC 100/200 PCB to determine connections as described in
the following sections.
Many boilers are provided with an accessible mains terminal block. Most
have a pair of connections (usually unused) for use with external controls.
These connections will have a link which needs to be removed so that the
TEC 100/200 control wires can be connected as shown in Fig.2.
TEC 100/200 PCB
NL E
Remove link
To boiler 2
(
TEC 200
)
To boiler
If the boiler is a simple
permanent pilot type, i.e.
Ideal Concord, Potterton,
Kingfisher etc, the
connections may be made
into the mains supply of
the boiler if more
convenient.
Fig. 2
Note: A 5-core heat resistant flex is ideal for connecting the TEC 100/200 to the
boiler. The recommended connection method is via a flexible nylon
conduit to house the cable.
Where a terminal block arrangement as shown in Fig.2 is not available, the
control wiring should be connected directly into the boiler thermostat wiring
as shown in Fig.3.

5
TEC 100/200 PCB
Boiler Thermostat
Boiler 2 (TEC200):
Connections as per
Boiler 1
NL E
Live in
p
ut
Live to Burner
Fig. 3
Other Wiring Options
The TEC 100/200 has three control relays. On the TEC 100 the left hand relay
is the Plant Relay which may be used to control a circulating pump and the
right hand relay is the boiler control circuit. The centre relay (Tec 100 only)
make and breaks on RTN/HW settings and may be used to control a HW pump,
solenoid etc, see Fig 4. On the TEC 200 the left hand relay is the Plant Relay,
the middle relay is boiler 2 control circuit and the right hand relay is boiler 1
control circuit.
Pump
TEC 100/200 PCB
NL E
1P 2
Make on
RTN/HW
temperature
drop.
Neutral
Live
Fig. 4

6
Fitting and Wiring Temperature Sensors
The TEC 100/200 has three temperature sensor inputs, these being Flow,
Return/Hot Water and External. Connections are as shown in Fig.5.
FLOW Sensor
TEC 100/200 PCB
AuxExtnFlow Retn
P 2 1 N E
L
EXTERNAL Sensor
RETURN / HW Sensor
Fig. 5
Flow / Return Temperature Sensors (Cable Type)
Using heat resistant cloth tape, tightly strap the sensors to the relevant
flow and return pipes, close to boiler, before any branching connections.
Cover the sensors with heating pipe insulation and strap with ty-wraps or
similar. See Fig.6.
Heat Resistant Cloth Tape Sensor Head
Securing Ty-Wraps
Pipe Insulation fixed over Sensor
Flow / Return Pipe
Fig. 6

7
Optional Hot Water Tank Sensor connections (replaces Return Temperature
Sensor) are shown in Fig.7.
Fix Tank Sensor
with expanding
wire (supplied
with optional
Tank Sensor).
TEC 100/200 Return
Temperature Sensor
co
nn
ec
ti
o
n
s
Optional HW Tank Sensor.
Connect in place of Return
Temperature Sensor.
Mount 1/3 to 1/2 way up
tank.
Fig. 7
If the hot water tank is a distance from the boiler, wiring to it may be
impractical.
If hot water priority is important then the Return Sensor should be fitted
to the Hot Water Tank Return Pipe. If this is also impractical, then fit
as normal to the main Return Pipe and set the Minimum Return
Temperature to provide an adequate level of hot water supply.
Where the tank option is used, set the Minimum Return Temperature
to the stored water temperature requirement.
External Sensor
The External Sensor should preferably be positioned on a north facing
exterior wall, and connected to the appropriate terminals of the TEC 100/200.
If it is not possible to mount the sensor on a north facing wall, then mount
in a shaded position, under eaves, and away from boiler house vent grilles etc.
Note A special reflective, insulated external sensor is available when fitting
in a position where solar heat is unavoidable.

8
Temperature Display Calibration
When required, the temperatures as displayed on the TEC 100/200 may be
adjusted to cater for heat losses on pipework, losses on external temperature
sensor etc. Program 17 (see page 30) can be used to calibrate the temperature
display by -10ºC/+20ºC.

9
C ommissioning - Introduction
The TEC 100/200 Digital has 18 main programs, these being:
1. Calendar
2. On/Off Times (Two On/Off Periods per day)
3. Frequency (Once, Twice, 24 Hours)
4. Select Days (Every Day, Weekends, Week Days)
5. Optimise On Time ( 0 to 240 minutes)
6. Optimise Off Time ( 0 to 240 minutes)
7. Maximum Flow Temperature (30ºC to 85ºC)
8. Minimum Flow Temperature (25ºC to 85ºC)
9. Minimum Return Temperature (20ºC to 65ºC)
10. Mid Temperature (0ºC to 85ºC)
11. Night Temperature (0ºC to 85ºC)
12. Frost Temperature (0ºC to 35ºC)
13. External Cut Off Temperature (0ºC to 35ºC)
14. Differential (1ºC to 5ºC)
15. Hot Water Priority (Yes / No)
16. Internal/External Optimisation (Yes / No)
17. Calibration (-10ºC/+20ºC)
18. Rotation (Yes / No)
Certain Differentials and the Compensation Slope are fixed within the software,
i.e. Return Temp 2ºC, External Temp 2ºC, Compensation Slope 1.5.
Keypad and Running Mode Overview
Used to enter Programming Mode from normal running mode,
and to access Change Mode for the selected program.
P
PROGRAM
Used to cycle through the program list when in Programming
SELECT
Mode and to change program settings when in Change Mode.
Used to cycle through the program list when in Programming
Mode and to change program settings when in Change Mode.
RETURN

10
E Used to confirm a programming change and to exit from the
Programming Mode.
ENTER
The TEC 100/200 will go into Boost mode from a cold BOOST
S57 F20 R20 E12
start. It will stay in this mode for 15 minutes, or
until the Return Temp is within10ºC of the Flow
Temp If a Hot Water Sensor is fitted then the
TEC 100/200 will go into Boost mode if the HW Tank
is cold.
FIRING
S57 F50 R42 E12
Firing mode indicates that the boiler is firing.
Temp Set indicates that the actual Flow Temp is
above the system set temperature**. The boiler will TEMPERATURE SET
S57 F59 R53 E12
not be firing at this point.
Economising indicate that the TEC 100/200 has entered ECONOMISING
S57 F59 R53 E12
self learning mode and is making economies. The
boiler will not be firing at this point.
EXT
S57 F36 R34 E16
Ext ‘flashing’ indicates that the external temp
is above the level set in the Ext Cut-Off program.
** The system set temperature as indicated in the display, represents the
heating system aiming temperature based on current climatic conditions,
as determined by the TEC 100/200’s weather compensation circuitry.