EXHAUSTO Ltd.
Unit 3,Lancaster Court
Coronation Road
Cressex Business Park
GB-High Wycombe -HP12 3TD
Tel. 01494 465166
Fax 01494 465163
[email protected]
www.exhausto.co.uk
3001776 - 07.2005 Right to modification is reserved
Height (mm)
85
Width (mm)
126
Depth (mm)
32
Fuse rating (amps) (A)
3.15 A T
Fail safe (B)
Pressure differential switch (PDS)
24V DC
(Closed circuit supply)
Output to chimney fan (C)
1.8A / 230V (AC 3)
Output to soleniod valve (SMG) (D) 230V AC max. 100 VA
Dipswitch options (E)
• Manual reset
• After ventilation 3 min. period
Set-point running speed (F)
Potentiometer on PCB
Supply (G)
230V +/- 10%, 50 Hz
Input for external on/off switch (H) 24V DC
(Closed circuit supply)
Release out Relay (I)
Max. 3A 230V AC / 3A
30V DC (Fused: 3.15AT)
Operating temperature
-10°C to 40°C
Degree of protection
IP 30
Material
ABS
Colour
White
CE-Approval No.
0063BN1144 based on
EN298 (1993)
Description
EXHAUSTO controller EFC21 has been developed for use with
gas fireplaces where an EXHAUSTO chimney fan
or wall fan is installed.
The control system supervises the fail-safe function. In case of
insufficient chimney draught, the EFC21 will shut off the gas
supply.
The control system is developed to meet BS 5440:
Part 1 (2000), BS 6644 (1991), Gas Appliance Directive 90/396/
EEC, EN298 (1993) and other relevant European standards.
Function
By activating EFC21 the chimney fan will immediately start up
on full speed. When the fail-safe supervision confirms suffi-
cient chimney draught, the fireplace can be lit and the fan
speed will adjust to the pre-set value set during commissio-
ning.
The controller has a step-up function and a 15-second built-in
delay function to avoid nuisance cut-outs. When EFC21 is
turned off, the chimney fan stops.
It is possible to pre-set an after-ventilation period of
3 minutes.
EFC21 - Product Information
EXHAUSTO controls are supplied with a 2 year warranty. EXHAUSTO is certified according to ISO 9001.
1
2
3
The system consists of
:
1. Chimney fan
2. Controller EFC21
3. Solenoid valve SMG
EFC21 - Technical Data
The step-up function is part of the fail-safe system. Should the
draught fail during normal operating conditions: the controller
will increase the fan speed to compensate. This usually occurs
on days that are windier than the commissioning day. If
sufficient draught cannot be re-established, then the EFC21
will shut off the gas supply.
