Centrifugal in-line fan 125 mm InLineVent
RR, RRK and SilentBox
Accessories for RRand RRKPipe clamp connectors RR 125 C
FrequencyHzTotal1252505001k2k4k8k L WA Case breakoutdB(A)5640525150464133 L WA IntakedB(A)6745646160585141 BM 125 Ref. No. 5076A quick-fix method for connecting
fans to ducting, reducing vibrationtransmission. When installing leavea little gap between fan and ducting. Supplied in pairs. RRK 125
FrequencyHzTotal1252505001k2k4k8k L WA Case breakoutdB(A)5539465051473827 L WA IntakedB(A)6144535755544938 SB 125 A
FrequencyHzTotal1252505001k2k4k8k L WA Case breakoutdB(A)3528282727252627 L WA IntakedB(A)4541383533262312 L WA ExhaustdB(A)5545474851463930 Mounting feet for RR MK 4 Ref. No. 5824
∆ p stat. Mounting feet for RRK
Pa
V.m 3 MK 1 Ref. No. 5821To fix fan on wall, floor or ceiling;
made from galvanised steel.
ρ = 1.20 kg/m Accessories for all modelsBack draught
shutter RSKK 125 Ref. No. 5107Air stream operated, polymer. Gravity shutter VK 125 Ref. No. 0857Air stream operated, polymer, light-grey.
cm/s Fixed grille G 160 Ref. No. 0893Polymer, light-grey. RR 125 C
RRK 125
SB 125 A Guard for spigot connection SGR 125 Ref. No. 5064For intake and exhaust installationon fan, made from galvanisedsteel.
3 /h Sound levels Flexible attenuator Total sound power levels and the spectrum figuresin dB(A) are given for case breakout
intake and exhaustin the tables above the performance curves.In addition the case breakout figure is given as a sound pressure level at 1 metre (freefield conditions) in the technical data table (see facing page).Note: For silentbox the sound level on intake is lower than onexhaust.
InformationPages Technical description148
Selection chart149Design of systems12-16Modular comp. system150 FSD 125 Ref. No. 0677
Spigotted aluminium attenuatorwith 50 mm insulation. Length: 1 m. Spigotted attenuators SRSD 125/... see page 219
Spigotted attenuator with 50 mminsulation. Available in four lengths:300/600/900/1200 mm. In-line air filter box LFBR 125 Ref. No. 8577Air filter with big cross sectional
area to be installed in-line with
ducting. Spigots incorporate twin-seal rubber sealings to fitstandard size ducting. Electric
heater battery EHR-R 0.8/125 Ref. No. 8709 In duct casing made from galvanised sheet steel, for in-line installation. Water heater battery LPHW
Other accessoriesPages WHR 125 Ref. No. 9480Compact unit for in-line installation. Information for ducting systems All Helios components fit standard nominal duct diameters. The ducting usedmay be rigid or flexible and made from aluminium, galvanised steel or plastic.
Observe fire protection
regulations where applicable.
Filters and
heater batteries211-220
Flexible ducting,guards, duct componentsand roof outlets245-256
Valves257-263
Speed controllers and switches275-290 Transformer speed controller for RRK and SB TSW 0.3 Ref. No. 3608 for RR TSW 1.5 Ref. No. 1495 Electronic speed controller ESA1 Ref. No. 0238 155