Damper blade for volume flow rate balancing (optional). Equalising element that ensures a uniform airflow through the diffuser face (supply air variant). Square opening to accommodate the diffuser face. Plenum box for horizontal duct connection. With plenum box for horizontal duct connection. Damper blade for volume flow rate balancing. Butterfly damper for volume flow rate balancing. Connecting frame for installation of the diffuser into vertical ducts. Ceiling diffuser with square diffuser face. Together with renowned designers and architects we have developed ceiling, wall, staircase and floor diffusers and grilles that are not only aesthetic design elements, but also meet demanding ventilation and acoustic requirements. Supply air to room air temperature difference: –10 to +10 K. Diffuser face made of galvanised sheet steel. Horizontal four-way supply air discharge. Sound power level of the air-regenerated noise measured according to EN ISO 5135. Ready-to-install component which consists of the galvanised sheet steel diffuser face with fixed air control blades, a diffuser front frame with perimeter seal and connecting frame, opposed action blades, butterfly damper or a plenum box.ĭiffuser face suitable for central screw fixing. For installation into all types of suspended ceilings. Diffuser face with fixed air control blades for horizontal four-way air discharge. Supply air and extract air variants for comfort zones. Maximum sound power level 40 dB(A) with damper blade position 45°ĭLQ-A, DLQ-AR (supply air), sound power level and total differential pressureĭLQ-AK (supply air), sound power level and total differential pressureĬeiling diffusers with square diffuser face. Square ceiling diffuser, steel, with fixed air control blades 50 dB (A).Įxact values for all parameters can be determined with our Easy Product Finder design programme. The maximum volume flow rates apply to a sound power level of approx. Quick sizing tables provide a good overview of the volume flow rates and corresponding sound power levels and differential pressures. Maintenance-free as construction and materials are not subject to wear. Sound power level of the air-regenerated noise measured according to EN ISO 5135. Diffuser face powder-coated RAL 9010, pure white. Attachments are dip coated RAL 9005, jet black. X: Plenum box made of plastic and galvanised sheet steel. AK: Plenum box and cross bar made of galvanised sheet steel. Diffuser face, connecting frame and butterfly damper made of sheet steel. Spigot suitable for circular ducts to EN 1506 or EN 13180. Simple installation of the diffuser face due to central fixing screw with decorative cap. Square diffuser face with fixed air control blades. AK: Horizontal duct connection, with plenum box. C: Vertical duct connection with butterfly damper. AG: Vertical duct connection, with blades. AR: Vertical duct connection, with connecting frame. 
Annual Review of Psychology, 66, 825-852. Advances in mediation analysis: A survey and synthesis of new developments. Journal of personality and social psychology, 51(6), 1173. The moderator–mediator variable distinction in social psychological research: Conceptual, strategic, and statistical considerations. However, if they are, for the "required" (or better say "desirable") relationships between IVs and mediator/moderator - see the appropriate methodological literature.ģ. If controls are not part of your mediation/moderation test, then you shouldn't worry much about them. Typically, controls come from literature (or sometimes from common sense.
All assumptions of your estimator pertain to your controls in the model (e.g., there should be no multicollinearity between IVs, etc.)Ģ. Let me clarify - two dependent variables - means you have two separate (univariate) models or are you talking about a multivariate model? Now, answering your questions:ġ. Make sure you build on the appropriate literature. Testing for mediated moderation is quite complex, as it requires both strong theoretical grounds and robust empirical support.
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