Roof hatch type RHT in special sizes

Specification

Special size: ........ x ........ mm

Sizes > 2500 x 1000 mm are supplied with double lid (RHT-D).
Special sizes are supplied in aluminium

Gorter® - completely assembled with

Thermal separated and insulated aluminium construction
Counterbalancing system for assisted opening and controlled closing
Double wind and weather tight sealing between lid and curb
Lid that engages automatically in open position, with one hand release
Three point Eurocylinder lock with 3 keys, inside and outside operation.
Sizes from 700 x 1400 mm: Eurocylinderlock (31 x 60 mm) with 3 point latch
Diagonal handrail to safely enter and leave roof hatch

Performance:

Insulation value (EN-ISO10077-1/2): Rc = 3.57 (m².K)W; U = 0.28 W/(m².K)
Sound reduction (EN-ISO140-3): 27 dB
Wind and water tightness (EN1027/EN1873): 650 Pa
Construction strength (EN1026/EN1027): ± 3000 Pa
Air tightness (EN 1026): 0.5 m³/hm1
Snow load EN 1991-1/5): 200 kg/m²

Standard powder coating:

Aluminium: RAL7047 (outside) and RAL9010 (inside)

Attention

Lid is provided with internal stiffeners, small welding spots can show on outside
To prevent damage and deformation don’t open lid with strong winds.

Options

Gorter® - Electrical Operation of Roof Hatches and Floor Doors

electrical_operation

Depending on the access door type, the weight of the cover and the application, we can install one

or more gear rack drives. These drives are available in 24 Vdc or 230 Vac
Operation and control 230Vac

This is the simplest system with 1 motor. It can be operated with an integrated or surface-mounted switch, not included.
Operation and control 24Vdc
Operation of one or more drives is controlled by a control box with rectifier that is connected to the electricity network.
Features

communication with central alarm system
emergency switch
certified for smoke vent system / fire resisting system
programmable
operation control of other objects
control by automatic detectors - smoke, rain, wind, fire etc.
automatic sequence control of two covers that are overlapping
automatic stop in case of unequal load or overload
etc.

Depending on the features we will recommend a suitable control box type.
Emergency hatches and doors:
It is of life importance that an emergency door opens after a break down of the electrical system. For those reasons a control box can be provided with a built-in emergency power pack.
If the emergency situation is very critical it advisable to apply doors that can be manually operated after a total break down of electrical network system and the emergency power pack.
Electrical installation:

The drives and the wiring must be installed by a certified installer.

Specification Gorter® Safety Railing

safety_railing Partition and marking of safe area on the roof
Components: