RoofVent ® Content Operating instructions 1 Use 7 Transport and installation 1.1 Intended use ..............3 7.1 Scope of delivery ............20 1.2 User group ..............3 7.2 Storage ................ 21 7.3 Requirements for the installation site ......22 7.4 Installation..............23 2 Safety 7.5 ...
RoofVent ® Operating instructions 1 Use 1.1 Intended use RoofVent KG units are supply and extract air handling units for heating spaces ® up to 25 m in height with decentralised condensing gas boiler. They have the following functions: ■ Fresh air supply ■...
RoofVent ® Safety Operating instructions 2 Safety 2.1 Symbols Caution This symbol warns against risk of injury. Please heed all instructions designated by this symbol to prevent injuries and/or death. Attention This symbol warns against property damage. Please heed the respective instructions to prevent risk of damage to the unit and its functions.
Safety Operating instructions ■ Replacement parts must comply with the technical requirements of the system manufacturer. Hoval recommends the use of original spare parts. ■ Unauthorised reconfiguration or modification of the unit is not permitted. ■ Shut down the unit immediately, if any defects are ascertained that limit the operational safety.
RoofVent ® Construction and operation Operating instructions 3 Construction and operation 3.1 Construction The RoofVent KG unit consists of the following components: ® ■ Roof unit with energy recovery ■ Gas boiler attachment ■ Below-roof unit ■ Roof unit with energy recovery and gas boiler attachment ■...
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RoofVent ® Construction and operation Operating instructions ■ Actuator Air-Injector ■ Extract air grille ■ Flow and return pipes ■ Extract air access door ■ Condensate drain gas boiler ■ Neutraliser ■ Heating pump ■ Condensing gas boiler ■ Fresh air access door (access to the fresh air filter) ■...
RoofVent ® Construction and operation Operating instructions 3.2 Function diagram ■ ■ Fresh air Return temperature sensor ■ ■ Fresh air filter with differential pressure switch Condensing gas boiler ■ ■ Temperature sensor air inlet ER (optional) Air-Injector with actuator ■ ■ Fresh air damper with actuator Supply air temperature sensor ■ ■...
RoofVent ® Construction and operation Operating instructions 3.3 Operating modes The RoofVent ® KG has the following operating modes: ■ Ventilation ■ Exhaust air ■ Ventilation (reduced) ■ Supply air ■ Air quality ■ Standby ■ Recirculation The TopTronic ® C control system regulates these operating modes automati- cally for each control zone in accordance with the specifications in the calendar.
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Connecting a room ther- Recirculation damper ..open mostat makes it possible to specify a room temperature set value. Heating ......on Forced heating can be activated and set as required by the Hoval service technician. Table 1: RoofVent KG operating modes ®...
RoofVent ® Type code Operating instructions 4 Type code KG - 9 Z - - K1 / ST . -- / V0 . D1 . LU / AF . SI / - . -- . CI . -- / TC . EM . -- . RF Unit type RoofVent ®...
RoofVent ® Technical data Operating instructions 5 Technical data 5.1 Application limits Fresh air temperature min. °C – 15 Extract air temperature max. °C Extract air relative humidity max. Moisture content of extract air max. g/kg 12.5 Units in ColdClimate design: Fresh air temperature min.
RoofVent ® Technical data Operating instructions 5.5 Air flow rate Nominal air flow rate m³/h 11000 Floor area covered m² 1283 Table 7: Air flow rate 5.6 Technical data of condensing gas boiler Rated heating capacity at 80/60 °C 13.4 – 71.8 Rated heating capacity at 50/30 °C 14.8 –...
RoofVent ® Options Operating instructions 6 Options 6.1 ColdClimate design RoofVent units in ColdClimate design are suitable for temperatures down to ® – 40 °C. The following features ensure trouble-free operation of the system: Fresh air and bypass dampers Actuators and gear wheels of the fresh air and bypass dampers are provided with a heating facility.
RoofVent ® Options Operating instructions 6.3 Design with 2 Air-Injectors An on-site supply air duct can be connected to the RoofVent ® unit for distributing the supply air over a very wide area. 2 Air-Injectors can be installed on this. Fig. 6: RoofVent ®...
RoofVent ® Options Operating instructions 6.6 Fresh air and exhaust air silencers The fresh air silencer reduces noise emissions from RoofVent ® units on the fresh air side. It consists of an aluminium casing with a bird screen and acoustic insulation lining and is configured as an add-on part for the roof unit which can be folded downwards.
RoofVent ® Options Operating instructions 6.7 Supply air and extract air silencers Supply air and extract air silencers reduce the noise from RoofVent ® units within the room. The supply air silencer is designed as a separated component and is installed above the Air-Injector. The extract air silencer consists of acoustic insulation lining in the connection module.
RoofVent ® Transport and installation Operating instructions 7 Transport and installation Caution Risk of injury from incorrect handling. Transport, assembly and installation work may only be performed by specialists. Observe safety and accident prevention regulations. 7.1 Scope of delivery The scope of delivery includes: ■...
RoofVent ® Transport and installation Operating instructions Options The following optional components are supplied separately: ■ Fresh air and exhaust air silencer (on separate pallet; bolts, hinges and screws enclosed) ■ Additional room air temperature sensors, combination sensor room air quality, temperature and humidity (in zone control panel) ■...
RoofVent ® Transport and installation Operating instructions 7.3 Requirements for the installation site ■ Make sure that the roof has sufficient load-bearing capacity and that the roof frames correspond to the specifications in the design handbook. ■ Position the units according to the system layout. Pay attention to the orientation of the units to each other and observe the minimum and maximum distances.
RoofVent ® Transport and installation Operating instructions 7.4 Installation Caution Risk of injury caused by falling load and improper handling. During installation: – Wear personal protective equipment. – Do not stand under suspended loads. – Use cranes or forklifts with sufficient load-bearing capacity. Caution Provide suitable protective devices and make sure the units can be accessed easily.
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RoofVent ® Transport and installation Operating instructions Assembling the below-roof unit The below-roof unit must only be assembled at the building site if it must be delivered in multiple parts due to the unit version. Proceed as follows: ■ Make sure that the correct unit components match up (observe the unit number and RoofVent ®...
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RoofVent ® Transport and installation Operating instructions Installing fresh air and exhaust air silencers Fresh air and exhaust air silencers (optional) are supplied separately and must be installed on the roof unit at the building site. The installation material is provided. Proceed as follows: ■...
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RoofVent ® Transport and installation Operating instructions Installing the below-roof unit ■ Apply sealing compound to the roof frame. ■ Screw in the transport eyes into the connection module frame and attach the lifting gear. – Heed the minimum length of the lifting ropes (see Fig. 19). ■...
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RoofVent ® Transport and installation Operating instructions Installing the roof unit ■ Remove the cover caps on the unit roof. ■ Screw in the transport eyes and attach the lifting gear. – Heed the minimum length of the lifting ropes (see Fig. 22). ■...
RoofVent ® Transport and installation Operating instructions 7.5 Installing the air intake/flue gas system ■ Connect the loosely supplied parts of the air intake/flue gas pipe to each other (slip-on coupling with locking band and seal): ■ Screw the spacer to the fastening bracket. –...
RoofVent ® Transport and installation Operating instructions 7.6 Connecting air ducts and Air-Injectors Attention Danger of damaging the units. The unit must not be subjected to the weight of the ducts. Suspend the ducts from the ceiling or support them on the floor. Connecting the supply air duct ■...
RoofVent ® Transport and installation Operating instructions 7.7 Hydraulic installation The complete heating circuit is already integrated in RoofVent ® KG units. The following work must be carried out during installation: ■ Connect the flow and return pipes of the below-roof unit to the connections in the roof unit: –...
Please note the following: ■ The fuel used is natural gas. Check the type of gas the unit is set to work with and, if necessary, have Hoval Customer Service reset the unit to the type of gas supplied locally. ■...
RoofVent ® Transport and installation Operating instructions 7.10 Electrical installation Caution Danger of electric shocks. The electrical installation is to be carried out only by a qualified electrician. Please note the following: ■ Observe all relevant regulations (e.g. EN 60204-1). ■...
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RoofVent ® Transport and installation Operating instructions ■ Design without Air-Injector: – Install the enclosed supply air temperature sensor in the supply air duct and wire it up to the connection box. ■ ColdClimate design: At low outside temperatures, a cold start of the fans can cause damage to the unit.
RoofVent ® Initial commissioning Operating instructions 8 Initial commissioning Attention Risk of damage to property as a result of performing initial commissioning on your own authority. Initial commissioning must be performed by the manufacturer's customer service technicians . 8.1 Checklist to prepare for commissioning: ■...
Immediately replace damaged or removed informational and warning signs. ■ Following maintenance work, professionally reassemble all dismantled protec- tive devices. ■ Replacement parts must comply with the technical requirements of the unit manufacturer. Hoval recommends the use of original spare parts. 4 220 755-en-00...
RoofVent ® Maintenance and repair Operating instructions 9.2 Maintenance Maintenance schedule Activity Procedure Interval Clean unit Clean inside of RoofVent unit with vacuum cleaner. 1 × annually ■ ® Clean the heat exchanger and burner of the gas condensing boiler. ■ Remove the siphon, clean it and rinse the condensate drain. ■...
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RoofVent ® Maintenance and repair Operating instructions Changing the filter Caution Danger of hazardous emissions from damaged filters: – Only hold the filters on the black filter frame. – Never touch the white filter medium. – Replace damaged filter elements immediately. Caution Crushing hazard from closing dampers.
RoofVent ® Dismantling Operating instructions 9.3 Repair If required, contact Hoval customer service. Product service life Component Service life EC motors of the supply air and approx. 30'000 to 40'000 hours exhaust air fans depending on the application and environmental conditions Damper actuators with at least 60'000 emergency positions spring return...
RoofVent ® Disposal Operating instructions 11 Disposal ■ Recycle metal components. ■ Recycle plastic parts. ■ Recycle the heat transfer fluid. ■ Dispose of electric and electronic parts via hazardous waste. ■ Dispose of oil-fouled parts in accordance with local regulations. ■...
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