RCH recessed ceiling heaters 3kW and 4.5kW
Applications
The RCH Recessed Ceiling Heaters are designed for installation into either a standard suspended grid or plasterboard ceiling, wherever there is sufficient space above to accommodate them. The RCHS front panel can be cut down to a minimum 600mm x 400mm for use where the full 600mm x 600mm is not required such as overdoor or perimeter use.
They can be installed as the main or supplementary heating in shops, reception areas, toilets etc. For even heating a greater number of 3kW units is preferable over fewer 4.5kW units. Locating the units in positions of greatest heat loss gives an easy solution to uneven heating of open plan areas. The high level mounting has the added benefit of recirculating the hot air from ceiling level for greater heating efficiency. Front mounted air intake ensures only pre-heated air from the room is recirculated.
The "Time and Temperature" control option gives a simple and effective way of centrally controlling multiple heater to the latest Building Regulations
Features
- remote switching unit for heat selection and fan only.
- Time and Temperature" control option (RCH-TT)
- easy access to connections for quick installation (two screws)
- loadings at 3kW and 4.5kW.
- front mounted intake ensuring recirculation of room air only.
- models for suspended T bar ceiling systems, standard plasterboard ceilings and surface mounting.
- minimum height for ease of installation in smaller ceiling voids.
- light grey textured powder coated finish front cover.
- front cover can be modified for non standard tiles.
- over temperature safety cut-out with power off reset.
Options
- inset white aluminium diffuser for 600mm x 600mm T bar ceiling. (RCHS)
- recess fitting white aluminium diffuser for plasterboard ceiling (600mm x 400mm). (RCHR)
- light grey textured finish cover for surface fixing. (RCHB)
- RCHX-xxxx TT "Time and Temperature" control
- Optional controls - 7 day programmable time switch incorporating 13A fused connection unit (CTTF)
Specification
| Reference | Volt | Watt | Wt kg | Dimensions (mm) | |||||||
| A | B | C | D | E | F | G | H | ||||
| RCHS-3210 | 230 | 3000 | 10.5 | 590 | 400 | 600 | 570 | 210 | 600 | ||
| RCHR-3210 | 230 | 3000 | 10.0 | 590 | 400 | 570 | 210 | 600 | 405 | 575 | |
| RCHB-3120 | 230 | 3000 | 10.5 | 400 | 570 | 210 | 420 | 620 | |||
| RCHS-4200 | 230 | 4500 | 10.5 | 590 | 400 | 600 | 570 | 210 | 600 | ||
| RCHR-4200 | 230 | 4500 | 10.0 | 590 | 400 | 570 | 210 | 600 | 405 | 575 | |
| RCHB-4200 | 230 | 4500 | 10.5 | 400 | 570 | 210 | 420 | 620 | |||
Installation
Mounting
The heaters are designed for ceiling mounting. It is not advisable to position them over desks, counters or high level
display racking wherever a constant flow of heated air may be uncomfortable or cause overheating.
RCHS
Mounting brackets are provided for mounting either directly to a standard 600mm x 600mm grid or by suspension
rods to suitable supports. The brackets allow mounting flush with the ceiling or on top of the T bar allowing the fitting
of the aluminium diffuser. The front panel can be cut down to a minimum of 600mm x 400mm for non standard tiles.
RCHR
Mounting brackets are provided for mounting in a 600mm x 405mm cut-out, the brackets being fixed to the heater
and then screwed to the surface of the ceiling . Alternatively fixings can be made through the sides of the unit into a
suitable frame. The special aluminium diffuser is then fitted directly to the ceiling.
RCHB
The heater is mounted directly to the ceiling with appropriate fixings through the top of the unit. An overall cover is
then fitted to give a finished surface installation.
The minimal height of the unit allows it to be fitted within a ceiling void of 250mm.
The maximum recommended mounting height is 3.0m.
Connection should be made to a suitably fused power supply via the Remote Switch Unit or a 2 pole switched connection unit having a contact separation of at least 3mm in all poles.
Access to the connector block is gained by removing the side cover plate (2 screws), connection is then made using cables with 4 cores and earth, with at least one being rated to take the full load current.
Electrical Installation should be carried out by a suitably qualified person to the latest edition of the IEE Requirements for Electrical Installations.(BS7671:1992)
Control
Standard Units
Heat Output
For convenient selection of output and fan only, remote switching is achieved by wiring the internal connector block to the
Remote Switch Unit. This allows selection of 3, 2 or 1kW output for the RCH-3210 or 4.5 and 2.25kW for the RCH-4200.
Temperature
Single units can be wired through a suitable 20 Amp thermostat mounted out of the direct influence of the heated
airflow. Multiple units are ideally controlled in "zones" via a suitable thermostat and contactor.
"Time and Temperature" units
Fan Output
The main relay controls the supply to the unit. This has to be switched by a fused 230V supply connection unit incorporating either a time switch/programmer for automatic control (CTTF) or an on/off switch for manual control. The fan runs continuously when the main relay is switched on.
Heat Output
The second relay controls the switching of the heating elements, they are not switched individually.
Temperature
The second relay is also switched by a fused 230V supply, usually the time controlled circuit. A single thermostat (CRST-16) can control all the heaters. Alternatively several can be used to create zones thus compensating for uneven heat requirements. The thermostats should be mounted outside the direct influence of the heated air.