Domestic & Commercial Ventilation Systems - Polypipe

Domus FansBOXED CODE RETAIL CODE PRICE BQMulti Room ExtractionSuitable for continuous operationMRE Kit (includes Unit) MREK £187.05 1MRE Unit Only MRE £119.69 1MREK includes 4 x 6m lengths of 80mm dia. and 2 x 6mlengths of 125mm dia. flexible hose, plus 4 x 80mm dia. and 1x 125mm dia. inlet (all white). Suspension cord and instructionsare also included. Electricity Supply 220 - 240V~50 Hz.NB: External outlet is not included.Guide for table useStep 1: Determine the whole building rate from Table B.Step 2: Calculate the whole dwelling air extract rate at maximum operation by totalling the individualroom rates for ‘minimum high rate’ from Table A.Step 3: The required extract rates are as follows:• the maximum rate (e.g. ‘boost’) should be at least the greater of step 1 and step 2. Notethat the maximum individual room extract rates should be at least those given inTable A for minimum high rate.• the minimum rate should be at least the whole building rate in step 1.A. Extract Ventilation RatesRoom Min. intermittent extract rate Continuous extractProvides continuous and controlled domestic ventilation froma single extraction unit which can be used in up to five rooms,using only one external wall outlet. A two speed* ball bearingmotor is fitted to ensure long life and efficiency. The secondspeed acts as a powerful extraction boost, which can be usedafter a bath or cooking when removal of unwanted air is mostneeded. Fan spigots are fitted with flow regulators to balance thesystem and a simple to operate damper plate device regulatesairflow in the kitchen.Min. high rateKitchen 30 l/s (adjacent to hob); or 13 l/s60 l/s (elsewhere)Utility room 30 l/s 8 l/sBathroom 15 l/s 8 l/sSanitary accommodation 6 l/s 6 l/sMin. low rateTotal extract ratemust be at leastthe whole buildingventilation rate inTable below* A single pole changeover switch is required.Outlet Choicesee pages 10 & 11B. Whole Building Ventilation RatesRoomNumber of bedrooms in dwelling1 2 3 4 55900 Gravity Flap OutletWhole building ventilation rate a.b. (l/s) 13 17 21 25 295902 Cowled OutletNotes:a. In addition, the minimum ventilation rate should be not less than 0.3 l/s per m 2 internal floor area(this includes each floor, eg for a two-storey building, add the ground and first floor areas).b. This is based on two occupants in the main bedroom and a single occupant in all other bedrooms.This should be used as the default value. If a greater level of occupancyis expected, then add 4 l/s per occupant.5904 Louvred GrilleTHE MREK IS ONLY AVAILABLE FOR SALE WITHIN THE BRITISH ISLESPrices effective from 1st July 200941