The Vent-Axia Gemini range of run and standby fans offers high performance double inlet forward curve fan motor impellers, typically suitable for high system resistance installation. In the event of failure the standby fan is operated, and visual fan failure indication (via integrated or optional remote indication light) is illuminated. The surface mounting model has a styled cover. For flush or duct mounting the power pack and back plate assembly is located within a galvanised steel casing and fitted with either a PVC cover for flush mounting or a galvanised steel cover for connection to ducts.

The Gemini range has an integrated overrun timer function fitted as standard, enabling versatile operation to comply with the Building Regulations Part F1 for internal rooms and Local Authority specification. The overrun timer can be manually adjusted between 1 and 20 minutes. (Units are factory set with the timer set to approximately 20 minutes).

All models incorporate a basic power pack which includes the motor housing, power on, fan run and fan fail neon indicator, which allows you to install the back plate at the first fix stage and plug in the power pack when the unit is ready for use. The power pack is pre-wired and incorporates a plug in arrangement for fitting to the back plate.

The Vent-Axia Gemini range is designed for installation in kitchens and utility rooms. Surface, flush or duct mounting models are available. The units meet Document F of the current Building Regulations.

All Gemini units can be controlled using any of the following Vent-Axia sensors :

Ecotronic Humidity Sensor -
Stock Ref. No. 56 35 32 or

Ambient Response Humidity Sensor -
Stock Ref. No. 56 35 50 or a

Thermo Switch -
Stock Ref. No. 56 35 02B

Gemini Surface
A surface mounted twin fan model with 100mm spigot.

Model GTFS

Stock Ref. No. 45 74 79

Gemini Recessed
A flush mounted twin fan model for recessed applications.

Model GTFF

Stock Ref. No. 45 74 80

Gemini Duct
A twin fan ducted model for in-line applications.

Model GTFD

Stock Ref. No. 45 74 81

Wall Fitting Kit
For use with Gemini range. Hole size 117mm.
Stock Ref. No.
25 41 02 - White
25 41 00 - Brown

Models	Stock Ref. No.	Performance m³/h	Sound Levels @ 3m	Speed RPM	Max Watts	Max Amps
GTFS - Surface	45 74 79	216	43	1370	57	0.19
GTFF - Flush	45 74 80	205	44	1370	57	0.19
GTFD - Duct	45 74 81	195	46	1370	57	0.19

Wall fitting kit
	White Stock Ref. No. 25 41 02 Brown Stock Ref. No. 25 41 00
Air replacement grille set
	Ivory Stock Ref. No. 56 14 01 Brown Stock Ref. No. 56 14 00
Quck fix 100mm wall grille
	White Stock Ref. No. 56 35 21 Brown Stock Ref. No. 56 35 41
Vent-cowl for connection to 100mm rigid pipe
	Stock Ref. No. 56 14 03
100mm Flexible ducting
	Stock Ref. No. 56 36 04 (3 metre) Stock Ref. No. 56 66 04 (6 metre)
Condensation trap for 100mm rigid duct
	Stock Ref. No. 56 35 16

For full details of System 50 components see System 50 web page.

	A	B	C	D	EØ	F	G
Surface	347	170	224	69	99	35
Recessed	385	233	366	255	98	230	35
Duct	366	233	230	36	98

Duet Surface

Supply and install a Gemini run and standby fan suitable for mounting in wall, ceiling or ducted applications as manufactured by

Vent-Axia Ltd
Fleming Way
Crawley
West Sussex
RH10 9YX
Telephone: 01293 526062.

The fan performance should meet building regulations of 60/30 l/s suitable for kitchens or utility rooms.

	Information:
	» Description » Installation » Control » Models » Product Specification » Accessories » System 50 Duct Components » Dimensions » Performance » Typical Specification
	Downloads:
	Catalogue Pages Wiring Diagrams O&M Instructions
	Features & Benefits:
	Suitable for kitchen and utility room applications. Comes complete with a plug in power pack. Integrated backdraught shutter. Duty sharing features supplied as standard. Meets Document F of the Building Regulations. Surface, flush and duct mounting versions are available.
	FAQs Answered:
	• Can be ceiling mounted. • Can be used with either 100mm circular ducting or System 50 flat duct. • Overrun timer as standard, remote PIR's or humidistat can be installed. • Duty sharing fans, automatic changeover. • Built-in or remote LED indicator for fan running and fan failure.