Vent-Axia 105 31 100 T1, 125 T1, 150 T1, 200 T1, 250 T1, 315 T1, 315 T3, 400 T3, 500 T3 duct air heater Installation & User Instructions

DUCT AIR HEATER
WITH BUILT-IN CONTROLS
Installation & User Instructions
Stock Ref.
105 31 100 T1
105 31 125 T1
105 31 150 T1
105 31 200 T1
105 31 250 T1
105 31 315 T1
Stock Ref.
105 31 315 T3
105 31 400 T3
105 31 500 T3
AIRTRAK
READ INSTRUCTIONS IN CONJUNCTION WITH ILLUSTRATIONS
READ AND SAVE THESE INSTRUCTIONS
THIS SECTION RELATES TO THE FOLLOWING DUCT HEATERS:105 31 100 T1
105 31 125 T1
105 31 150 T1
105 31 200 T1
Specifically designed to mount onto a Vent-Axia 220/240V electric heater and provide fan and heater control.
The heater must NOT exceed a maximum of 19A (4.5kW).
Supply and extract fan outputs are provided for 220/240V single phase fans up to a maximum of 3.5A FLC
complete with fuses.
The supply fan output has a built-in off delay timer* which is activated when Time clock / Switch terminal contact is
opened. This allows the heater to cool before the airflow is turned off. *The off delay timer is adjustable 1 to 2
minutes via a pot on the PCB.
Terminals are provided for an airflow switch or electronic airflow sensor.
N.B. If not used the airflow terminals must be linked.
The air temperature can be controlled accurately as it flows along the duct with the thyristor control provided. We
would recommend a duct sensor be used (supplied), however it is possible to sense the room condition with a wall
mounted sensor (optional).
The power supply should come from a local isolator which should be sized according to the size of the heater i.e. if
the heater is at its maximum 4.5kW a 30A isolator would be required.
To wire the unit is simple, you need only to connect Neutral and incoming Phase (Live) to the terminals provided on
the PCB. A 6mm earth bolt is provided for the earth connection (crimp eyelets are recommended). All wiring
should be carried out by qualified personnel and should meet the current IEE regulations.
To run the unit you only need to connect the sensor (room or duct), the airflow switch (or link) and the Time clock /
Switch. N.B. If no Time clock / Switch is used i.e. the unit is running 24 hours the terminals must be linked in order
for the unit to run. The thyristor control will now operate. Set the temperature with a terminal screwdriver on the
front of the panel (0 - 35ºC). The heater LED will indicate pulsing of the heater. If you want to control fans and or a
damper motor connect to the appropriate terminals as shown on the wiring diagram (fig 1). We would recommend
using the supply fan off delay function.
IMPORTANT MAIN ON/OFF SWITCH
Do not be tempted to turn the unit off via your Main isolator feed to the unit. Use the switch/time clock function
terminals provided and allow for the unit to cool before isolating the main supply feed. If you intend to use a speed
controller on the supply fan you must not turn off the fan via the speed controller ON/OFF switch. This could cause
the heater cut-out to trip or cause heat damage to insulation or wiring. Many speed controllers can be modified to
disable the ON/OFF switch, this is recommended although selecting the correct size for the duty required is the best
solution and will give a longer fan life.
Properly installed this unit should give a long and trouble free service. Make sure all filters in the ventilation system
are checked and changed regularly and the airflow switch functions reliably.
SPECIFICATION
Supply voltage
Output current
Temperature sensor
Temperature control range
Fan & Damper outputs
Supply & Extract fan outputs
Run on timer
Indicators
240Vac 50/60Hz. +/-10%
19A @40ºC (HEATER MAX.)
4.7k thermistor.
0 to 35ºC.
switch on when Time contact made.
3.5A max. each
adjustable from 1 to 2 minutes.
Power On – Yellow
Supply Fan On – Green
Extract Fan On – Green
Heater On – Red
WIRING DETAILS FOR FOLLOWING DUCT HEATERS:105 31 100 T1
105 31 125 T1
105 31 150 T1
105 31 200 T1
FIG 1
*
*
THIS SECTION RELATES TO THE FOLLOWING DUCT HEATERS:105 31 250 T1
105 31 315 T1
Specifically designed to mount onto a Vent-Axia 220/240V electric heater and provide fan and heater control. The
heater must be split into two equal parts, a maximum of 19A (4.5kW) per phase.
Supply and extract fan outputs are provided for 220/240V single phase fans up to a maximum of 5A FLC complete
with overloads and RUN and TRIP LED indication. The supply fan output has a built-in off delay timer* which is
activated when the Time Clock / Switch Terminal Contact is opened. This allows the heater to cool before the
airflow is turned off*. The off delay time is adjustable 1 to 3 minutes via a pot on the PCB.
A damper motor output is also provided which can be used with 220/240V drive open spring return inlet damper.
Volt free relay contacts are provided to signal the units ON/OFF status to a BMS system.
Terminals are provided for an airflow switch or electronic airflow sensor. N.B. If not used the airflow terminals must
be linked. Spare 240V terminals are also provided but these must only be used for control purposes max. 2A.
The air temperature can be controlled accurately as it flows along the duct with the thyristor control provided. We
would recommend a duct sensor be used, however it is possible to sense the room condition with a wall mounted
sensor (optional).
The power supply should come from a local isolator which should be sized according to the size of the heater i.e. if
the heater is at its maximum 9kW, a 45A isolator would be required.
To wire the unit is simple, you need only to connect Neutral and incoming Phase (Live) to the pillars provided on the
PCB. A 6mm earth bolt is provided for the earth connection (crimp eyelets are recommended). All wiring should be
carried out by qualified personnel and should meet the current IEE regulations.
To run the unit you only need to connect the sensor (room or duct), the airflow switch (or link) and the Time Clock /
Switch. N.B. If no Time Clock or Switch is used i.e. the unit is running 24 hours the terminals must be linked in
order for the unit to run. The thyristor control will now operate. Set the temperature with a terminal screwdriver on
the front of the panel (0 - 35ºC). The heater LED will indicate pulsing of the heater. If you want to control fans and
or a damper motor connect to the appropriate terminals as shown on the wiring diagram (fig 2). We would
recommend using the supply fan off delay function.
IMPORTANT MAIN ON/OFF SWITCH
Do not be tempted to turn the unit off via your main isolator feed to the unit. Use the switch/time clock function
terminals provided and allow for the unit to cool before isolating the main supply feed. If you intend to use a speed
controller on the supply fan you must not turn off the fan via the speed controller ON/OFF switch. This could cause
the heater cut-out to trip or cause heat damage to insulation or wiring. Many speed controllers can be modified to
disable the ON/OFF switch, this is recommended although selecting the correct size for the duty required is the best
solution and will give a longer fan life.
Properly installed this unit should give a long and trouble free service. Make sure all filters in the ventilation system
are checked and changed regularly and the airflow switch functions reliably.
SPECIFICATION
Supply voltage
Output current
Temperature sensor
Temperature control range
Fan & Damper outputs
Supply fan output
Extract fan output
Damper supply
Run on timer
Control on/off
Start relay contacts output
Indicators
240Vac 50/60Hz. +/-10%
19A/phase @40ºC for each of the two output channels.
4K7 thermistor.
0 to 35ºC.
switch on when both AFS and Time contacts closed.
240Vac, 5A max.
240Vac, 5A max.
240Vac, 2A max.
adjustable from 1 to 3 minutes.
both AFS and Time contacts close to switch on; any one of the contacts open to switch off.
2A @ 240Vac
Power On – Yellow
Supply Fan On – Green
Extract Fan On – Green
Heater On – Red
WIRING DETAILS FOR THE FOLLOWING DUCT HEATERS:105 31 250 T1
105 31 315 T1
FIG 2
*
*
*
*
THIS SECTION RELATES TO THE FOLLOWING DUCT HEATERS:105 31 315 T3
105 31 400 T3
105 31 500 T3
Specifically designed to mount onto a Vent-Axia 380/420V electric heater and provide fan and heater control. The
heater must be 1 step 3 phase, a maximum of 19A (4.5kW) per phase.
Supply and extract fan outputs are provided for 220/240V single phase fans up to a maximum of 5A FLC complete
with overloads and RUN and TRIP LED indication. The supply fan output has a built-in off delay timer* which is
activated when the Time Clock / Switch Terminal Contact is opened. This allows the heater to cool before the
airflow is turned off*. The off delay time is adjustable 1 to 3 minutes via a pot on the PCB.
A damper motor output is also provided which can be used with 220/240V drive open spring return inlet damper.
Volt free relay contacts are provided to signal the units ON/OFF status to a BMS system.
Terminals are provided for an airflow switch or electronic airflow sensor. N.B. If not used the airflow terminals must
be linked. Spare 240V terminals are also provided but these must only be used for control purposes max. 2A.
The air temperature can be controlled accurately as it flows along the duct with the thyristor control provided. We
would recommend a duct sensor be used, however it is possible to sense the room condition with a wall mounted
sensor (optional).
The power supply should come from a local isolator which should be sized according to the size of the heater i.e. if
the heater is at its maximum 4.5kW, a 32A isolator would be required.
To wire the unit is simple, you need only to connect Neutral and incoming Phase (Live) to the pillars provided on the
PCB. A 6mm earth bolt is provided for the earth connection (crimp eyelets are recommended). All wiring should be
carried out by qualified personnel and should meet the current IEE regulations.
To run the unit you only need to connect the sensor (room or duct), the airflow switch (or link) and the Time Clock /
Switch. N.B. If no Time Clock or Switch is used i.e. the unit is running 24 hours the terminals must be linked in
order for the unit to run. The thyristor control will now operate. Set the temperature with a terminal screwdriver on
the front of the panel (0 - 35ºC). The heater LED will indicate pulsing of the heater. If you want to control fans and
or a damper motor connect to the appropriate terminals as shown on the wiring diagram (fig 3). We would
recommend using the supply fan off delay function.
IMPORTANT MAIN ON/OFF SWITCH
Do not be tempted to turn the unit off via your main isolator feed to the unit. Use the switch/time clock function
terminals provided and allow for the unit to cool before isolating the main supply feed. If you intend to use a speed
controller on the supply fan you must not turn off the fan via the speed controller ON/OFF switch. This could cause
the heater cut-out to trip or cause heat damage to insulation or wiring. Many speed controllers can be modified to
disable the ON/OFF switch, this is recommended although selecting the correct size for the duty required is the best
solution and will give a longer fan life.
Properly installed this unit should give a long and trouble free service. Make sure all filters in the ventilation system
are checked and changed regularly and the airflow switch functions reliably.
SPECIFICATION
Supply voltage
Output current
Heater MCBs
Temperature sensor
Temperature control range
Fan outputs
Fan MCBs
Damper output
Run on timer
3 phase neutral and earth, 380/420Vac 50/60Hz.
19A/phase @40ºC for each load output channel.
30A @ 25ºC, 25A @ 40ºC.
4K7 thermistor.
0 to 35ºC.
5A max. FLC
8A @ 40ºC.
Max. relay contact 3A @ 240Vac.
1 to 3 minute setting range.
WIRING DETAILS FOR THE FOLLOWING DUCT HEATERS:105 31 315 T3
105 31 400 T3
105 31 500 T3
FIG 3
*
*
*
*
VENT-AXIA SALES CENTRES
ENGLAND & WALES NATIONAL CALL CENTRE
Newton Road, Crawley
West Sussex
RH10 9JA
Telephone: 01293 530202
Fax:
01293 565169
SCOTLAND
Telephone: 0141 429 1166
Fax:
01293 565169
NORTHERN IRELAND
REPUBLIC OF IRELAND
Vent-Axia Ventilation Ltd.
921 Western Road Industrial Estate
Naas Road, Dublin 12.
Telephone: 02890 402220
Fax:
01293 565169
Telephone: (01) 450 4133
Fax:
(01) 450 4570
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The Vent-Axia Guarantee
Applicable only to products installed and used in the United Kingdom. For details of the Guarantee outside of the United Kingdom
contact your local supplier.
Vent-Axia guarantees this product for one year from the date of purchase against faulty material or workmanship. In the
event of any part being found to be defective, the product will be repaired, or at the Company’s discretion the product will
be replaced without charge, provided that the product.
1. has beeninstalled and used in accordance with the instructions given with each unit.
2. has not been connected to an unsuitable electricity supply. (The correct electricity supply voltage is shown on the
product rating label attached to the unit.)
3. has not been subjected to misuse,neglect or damage.
4. has not been modified or repaired by any person not authorized by the company.
IF CLAIMING UNDER TERMS OF GUARANTEE
Please return the complete product, carriage paid to your original supplier or nearest Vent-Axia centre, by post or personal
visit. Please ensure that it is adequately packed and accompanied by a letter clearly marked “Guarantee Claim” stating the
nature of the fault and providing evidence of date and source of purchase.
The guarantee is offered to you as an extra benefit, and does not affect your legal rights.
Head Office: Fleming Way, Crawley, West Sussex RH10 9YX
Tel: 01293 526062 Fax: 01293 551188
Internet site at: www.vent-axia.com
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