When they began to develop the GEA SiCo SBQ floor convector for heating and cooling, GEA developers set themselves the objective of achieving high comfort levels in rooms, with low consumption of resources. The SBQ features a 4-litre system, and is suited for installation in conventional raised floors. With cover-grating outer dimensions of 1,250 mm length and 345 mm width, it takes up little floor space. As a result, it fits in inconspicuously with the interior design of generously glazed buildings.
An extremely large area with high comfort levels
It is especially in applications in modern functional buildings, with their transparent effects, that implementation of the principle of the floor convector offers particularly great benefits. Their fans direct room air over the heat exchangers and expel it at an oblique angle upward. Warm or cooled air then rises along the window surface in accordance with the Coandă effect. During winter, this prevents cold streams of air from descending along glass surfaces in a room, and in summer prevents unpleasant accumulation of heat on the interior side of the façade. The air rising along the window is re-directed as it reaches the ceiling, and flows through the room in the form of a recirculation zone. In this manner, the entire room air is pleasantly conditioned, and “air short circuits” are prevented. Low air velocities in areas occupied by persons mean that unpleasant draughts do not occur – room air, at the same time, however, is well mixed and homogeneous temperature distribution prevails. Systematic exploitation of the Coandă effect enabled GEA developers to significantly enlarge the comfort zone in comparison with conventional floor convectors.
The principle of dry cooling implemented here (with supply temperature for cold water approx. 16°C) eliminates the need for condensate drain tanks and pumps, and prevents any moisture from collecting.
Quiet and powerful: cross-flow fan with 5 speeds
The cross-flow fan installed here operates very quietly and offers a total of 5 speeds. As a result, it is a simple matter to quickly temper room climate under special conditions – e.g., after the weekend. At the highest speed, the blower passes up to 320 m³ of room air per hour over the heat exchangers. With a cooling rating of 460 W and heating output of 920 W per floor convector, the units offer enough power to pleasantly condition typical office rooms without additional support (both of these rating values are for medium blower speed).
Carefully directed supply of air with the SBI induction convector
With its identical outside dimensions, the GEA SiCo SBI floor convector ideally complements the SBQ mixed-air ventilation system. The combination of these two systems allows the user to successfully cope with the conditions in rooms with varying degrees of occupancy density, and with different supply-air requirements. The SBI models are induction units that are installed at the façade of a building, under a raised floor, and that connected to a central-ventilation system. With the SBI, however, it is not only the primary air flow that is used for heating or cooling. Instead, the primary air, upon its discharge, pulls secondary air out of the room to take its place. The secondary air, together with the primary air, is then directed into the room (in a process of induction). Upon its entry into the convector, this secondary air flows through the heat exchanger before it is mixed with the primary air. This mixture of air then rises along the inner wall of the façade. The heat exchangers (4-line systems) are connected to the hot- and cold-water networks.
Simple to install, maintenance-friendly, safe, and reliable
The GEA SiCo SBQ and SBI floor convectors are delivered along with the required electronic control groups. With its variable installation heights of approx. 170 to 290 mm, and with optional circumferential angle irons for mounting in a raised floor, the equipment can be easily integrated in raised-floor systems. The media connections for the hot- and cold-water network extend from the unit.
Quality cover gratings for the narrow convectors
The cover gratings are available for selection in natural aluminium, or with brass-, bronze-, or black-anodized finish. Upon request, we gladly offer versions in stainless steel and in other variations. A sturdy frame-insert system, which supports the grating, enables implementation of architecturally appealing strip configurations. Connecting elements (straight elements and mitred corners), available as accessories, easily make it possible to provide optically pleasing installations. It is simple to remove the cover gratings for cleaning and maintenance work.
24-volt systems for high safety standards
Despite the 230-volt main power feed, the 24-volt technology implemented throughout the system assures high levels of safety. The cross-flow fans of the SBQ floor convectors and the valve servo-drives operate at this low voltage, with the result that persons in the rooms are never endangered, even upon direct contact with these electrical components or after ingress of water. As a result, the units conform to the German Act for Reclassification of the Safety of Technical Equipment and Consumer Products (GPSG, the German law for equipment and product safety). The filter of the SBQ also represents no danger: it conforms to the stipulations of DIN 4102, Fire-Protection Class B2.
Control with GEA MATRIX
The control module for the new floor convectors is the GEA MATRIX 500, which can control up to 4 of these convectors in a network. The GEA MATRIX 500 is optionally available with a dewpoint-monitoring system. The new GEA MATRIX OP5C operator control unit enables the user to set the desired temperature and fan speed of the SBQ. The GEA MATRIX OP5C can control up to 4 of these units in a network. In addition, it also performs control functions for the 2-step-valve control groups. If requested, 3-step servodrives are available that can be controlled via the building-services management system.
Download:
Text incl. pictures as PDF file: GEA_SBQ_SBI.zip (114 kB)
High-res. pictures: gea_bodenkonvektoren_bilder.zip (1.013 kB)
Floor convectors
