• Ensure that the appliance is switched off from the supply mains before removing the guard. • Precautions must be taken to avoid the back-flow of gases into the room from the open flue of gas or other fuel-burning appliances. HRU 1500/2500/3500 User Manual...
HRU X P B EC R А** Automation type Service side L – left R – right Motor type EC – electronically commutated Additional components B – bypass Spigot orientation P - suspended mounting, horizontal spigot orientation. Rated air flow [m Unit type www.systemair.nz...
HRU 1500 1340 520 1726 1700 HRU 2500 1610 350 HRU 3500 1350 1960 1932 See the complete list of the technical data for the unit in the technical data sheet included in the delivery set. HRU 1500/2500/3500 User Manual...
5 – panels for access to the fans (located at the bottom of the unit) 6 – panels for access to the filters (located at the bottom of the unit) Panels 1-5 are fixed with screws. Panels 6 are secured with thumbscrews. www.systemair.nz...
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Three position ball valve with an Belimo R3020-4-B1+ Belimo R3020- electric actuator LR24A-SR 6P3-B1+ LR24A-SR Liquid mixing kit for the water heater USVK 3/4-4 USVK 3/4-6 Differential pressure switch DTV 500 Flexible connector VVG AV 600x350 Silencer SR 600x350 HRU 1500/2500/3500 User Manual...
While choosing fasteners consider the material of the mounting surface as well as the weigh of the unit. Fasteners for installation should be selected by a qualified technician. When installing the unit, it is necessary to ensure its slope of at least 3° towards the drainage pipes. www.systemair.nz...
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1 – drain spigot 2 – connecting pipe 3 – U-trap 4 – sewage system min 3° Make sure that the water flows into the sewage system before starting operation. Fill up the U-trap with water before using it. HRU 1500/2500/3500 User Manual...
WIRING DIAGRAM HRU1500 - 3500 HRU 1500-3000 230V/2A 0-10V 0-10V 0-10V 230V/2A 230V/2A 230V/2A CO2 IN CONTROL PANEL 10V IN NKD 10V 230V/1PH DESIGNATION NAME CABLE TYPE CONTACT TYPE SWITCH VOLTAGE CONTACT FROM FIRE PANEL 2 X 0.75 2A, 230V, AC FIREPLACE MODE INPUT 2 X 0.75...
Access to filters through side service panels Remove the service panels. Unscrew the two thumbscrews securing the Remove the filter elements. retaining plate. Access to filters through lower service panels Remove the service panels. Remove the filter elements. HRU 1500/2500/3500 User Manual...
The unit must be transported only in the working position. • Avoid sharp blows, scratches, or rough handling during loading and unloading. • Prior to the initial power-up after transportation at low temperatures, allow the unit to warm up at operating temperature for at least 3-4 hours. www.systemair.nz...
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