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Specification

Roof Hatch - Type RHT----A
Standard sizes (mm) in aluminium:
RHT7090A: 700 x 900    
RHT9090A: 900 x 900    
RHT7014A: 700 x 1400     
RHT1212A: 1200 x 1200
RHT1015A: 1000 x 1500
RHT1020A: 1000 x 2000 
RHT9024A:  900 x 2400
Weight:
RHT7090A: 700 x 900       -    33 kg       
RHT9090A: 900 x 900       -    39 kg
RHT7014A: 700 x 1400     -    69 kg
RHT1212A: 1200 x 1200   -    78 kg
RHT1015A: 1000 x 1500   -    67 kg
RHT1020A: 1000 x 2000   -    86 kg
RHT9024A:  900 x 2400    -    94 kg
Gorter® - completely assembled, surface mounted
-  Cover and curb in thermal separated construction
-  Counterbalancing system for assisted opening and controlled closing
-  Double sealing for weather and water tightness
-  Fully opened cover engages automatically, with release button
-  Diagonal handrail to safely enter and leave roof hatch
-  Cylinder lock with 3 keys, in- and outside operation.
Performance:
Insulation value (EN-ISO10077-1/2): 3,2 (m2.K)W
Sound reduction (EN-ISO140-3): 22 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 / sqm
Standard powder coating:
Aluminium: RAL7047 (outside) and RAL9010 (inside)

Safety Ladder - Type EL- single, OL - double or triple
Height: --------------mm
to be specified from floor to top of roof (without insulation and covering), max 7200 mm
Width:
depending on length and type from 360 - 490 mm
Distance between rungs:
250 mm
Standard features:
Ladder with two hooks on top to be hooked over a fixed step to safely enter and leave roof hatch. 
Hooks can be locked (padlock by others) to prevent ladder from misuse.
Ladder can be stored in the two included wall suspension brackets. One with padlock hasps, padlock by others.
Material:
Aluminium
Included in supply:
Two fixed hooks, one provided for padlock
Step with brackets

Suspension brackets, one with padlock hasps

Options

Depending on door type, cover weight and other requirements we can install one or more rack-and-pinion drives. These drives are available in 24 Vdc or 230 Vac
Operation and control 230Vac
This system is controlled with a surface mounted or built-in switch.
Operation of two drives through one switch is possible.
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:
Roof Hatches and Floor Doors will be supplied with drives installed together with required options as control box, switches, detectors, installation drawings and electrical diagrams. Electrical installation should be carried out by an electrical contractor.

Partition and marking of safe area on the roof
Components:
Rail post, straight, with base plate, net height ca. 1000 mm

Rail post, angle, with base plate, net height ca. 1000 mm
Hand rail
Knee rail
Material:
Aluminium
Supply:
In components
Installation:
Roof surface mounted
Mounted on concrete slabs (supplied by others)

Documentation

Safety_Report_RH_with_Ladder.pdf

RH_on_concrete_upstand.jpg

RH_on_concrete_or_steel_roof.jpg

RH_on_concrete_roof.jpg

RH_on_concrete_roof_insulated.jpg

Manual_Roof_Hatches.pdf

Drawing_RH.pdf

TÜV Certificate.pdf