TGK square roof duct

General

TGK (square)

Roof vent TGK (square) has been specially developed for DTH and DTV roof fans. Together the roof fan and roof vent form an elegant architectural whole. The roof fan is mounted directly on top of the roof vent. The base can be mounted with a diffusor or the vent can be extended with a duct or T-pipe.

Externally, TGK is constructed from galvanised sheet, and under it 50 mm mineral wool, fine-mesh fabric and an internal galvanised perforated sheet. The roof vent is supplied with an internal cable duct. Optional bracket. Warranty is void if the bracket is not mounted in accordance with the instructions.

	The roof vent is insulated for sound and condensation. To avoid transfer of vibrations to the roof vent, a rubber ring is mounted on the fan.
	The roof vent has been designed to take an electric cable via the integral cable duct. The installation cable is inserted in the cable duct at the bottom and drawn up by the safety switch, which is not normally an EXHAUSTO delivery. The safety switch is mounted directly on the roof vent.

TGK is supplied as standard in 3 lengths and 6 sizes with PERFORM flashing appropriate to the roof pitch. TGR/TGK is also available with zinc flashing or without flashing. Must be stated on order.

Damper and extractor fitting

DTV/DTH		160	200	250	315	400	450
Standard integrated	AOR size	160	200	250	315	400	450

Dimensional drawing

Dimensions

TGK, diameter

Roof fan	Roof vent	Dimensions			Weight*
Size	Size	C1	C mm	L1 mm	kg
DTV/DTH160	TGK160 - 600	Ø160	267	600	12
	TGK160 - 900	Ø160	267	900	15
	TGK160 - 1200	Ø160	267	1200	19
DTV/DTH200	TGK200 - 600	Ø200	307	600	13
	TGK200 - 900	Ø200	307	900	18
	TGK200 - 1200	Ø200	307	1200	22
DTV/DTH250	TGK250 - 600	Ø250	357	600	17
	TGK250 - 900	Ø250	357	900	21
	TGK250 - 1200	Ø250	357	1200	28
DTV/DTH315	TGK315 - 600	Ø315	422	600	21
	TGK315 - 900	Ø315	422	900	28
	TGK315 - 1200	Ø315	422	1200	36
DTV/DTH400	TGK400 - 600	Ø400	507	600	26
	TGK400 - 900	Ø400	507	900	34
	TGK400 - 1200	Ø400	507	1200	42
DTV/DTH450	TGK450 - 900	Ø500	607	900	46
DTV/DTH450	TGK450 - 1200	Ø500	607	1200	58

*Weight includes AOR and 30° PERFORM flashing

Max. roof pitch for length L1:
L1 = 600 mm: max 30° flashing
L1 = 900 mm: max 45° flashing
L1 = 1200 mm: max 60° flashing
Flashing can vary by ±2.5° relative to the given roof pitch

Flashing

Max. roof pitch for L1

If L1 =	max. roof pitch is
600 mm.	30° flashing
900 mm.	45° flashing
1200 mm.	60° flashing

Flashing can vary by ±2.5°relative to the given roof pitch.

TGK dimensions, indækning

Angle v	A [mm]	E [mm]	G [mm]	F [mm]
0°< v ≤ 2°	300	100	100	100
2°< v ≤ 60°	250	250	250	300

AOR, anti-backdraught shutter

AOR anti-backdraught shutter (standard)

As standard the roof vents are mounted with anti-backdraught shutter AOR, but can also be specially ordered without this.
When cleaning the roof vent and/or connector duct, the anti-backdraught shutter is easily detachable without use of tools.
The anti-backdraught shutter AOR opens when the fan is in operation.

AOR spjæld til TGK/TGR

Pressure loss graph

P_t = total pressure drop
Temperature: t = 20 °C
Density = 1.2 kg/m³

5107610, AOR Tryktabskurve

Installation

Installing TGK

TGK_mounting

Make a hole in the roof about 30 mm larger than the vent, and loosen overlying tiles/panels, sliding them upwards to permit insertion of flashing.

Carefully position the vent on the roof with the flashing level with the roof tiles. Fix the brackets to the vent, lifting it by about 5 mm when the brackets are subsequently fixed to the rafters. This will ensure that the whole weight rests on the brackets.

Roll out the flashing and knock it carefully into shape (with PERFORM, a rubber hammer or sandbag must be used). Replace overlying tiles/panels over the flashing.

Installation examples

	An EXHAUSTO roof fan, roof vent and diffusor at the base of the roof vent will provide an optimum air handling solution for the minimum of space, for example on flat or sloping roofs with a short distance to the extraction point.

	If there is a long distance between the roof vent and the extractor fitting, an extension can be formed with spiral tube or similar, with a duct fitting directly attached to the base of the roof vent.

	If ventilation is required from several locations, a spiral tube can be mounted to the base of the roof vent with duct fittings or T-pieces, sound locks etc. connected to a complete ducting system to the desired locations.

Sound data

TGK - sound data

Lp = sound pressure level dB(A) in the room

Assumptions for Lp:

Sound data has been measured under the following conditions.
•		The sound level is stated for an airflow equal to 80% of max. output for DTH/DTV roof fan (1400 rpm) of the same size as TGK.
•		Roof fan DTH/DTV is mounted on a TGK roof vent without anti-backdraught shutter AOR. In case of integral AOR, the reading will be 3 dB(A) higher.
•		No fitting at the base of TGK.
•		Extraction is located in the middle of the ceiling.
•		Sound absorption in room = 10 m² sabin.
•		Measurement point in the middle of the room

TGK	125 Hz	250 Hz	500 Hz	1000 Hz	2000 Hz	4000 Hz	8000 Hz	Lp DTH dB(A)	Lp DTV dB(A)
160-600	1	6	22	23	22	12	5	36	33
160-900	2	8	23	27	28	17	8	34	31
160-1200	4	11	25	28	33	22	10	32	28
200-600	3	5	15	25	24	13	5	44	42
200-900	5	6	20	29	30	18	7	42	40
200-1200	7	11	26	31	34	23	9	38	36
250-600	4	7	13	19	12	7	4	47	48
250-900	5	9	20	26	18	10	6	45	46
250-1200	6	11	25	30	23	13	7	43	44
315-600	4	5	11	15	9	4	4	58	58
315-900	5	8	15	20	12	5	5	55	55
315-1200	7	10	20	25	15	7	6	53	52
400-600	2	5	9	11	6	4	3	63	65
400-900	2	6	14	20	9	6	5	61	62
400-1200	4	7	14	22	11	7	7	60	61
450- 900	2	3	12	17	8	4	4	-	-
450-1200	2	5	14	21	10	6	5	-	-

Tel	+45 6566 1236
E-mail:	export@exhausto.dk