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Summary of Contents for Hoval RoofVent KH
- Page 1 I n d o o r C l i m a t e S y s t e m s Hoval RoofVent ® KH | KC | KHC Operating instructions Original operating manual 4 219 614-en-02 Hoval | Responsibility for energy and environment...
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Page 2: Table Of Contents
RoofVent KH | KC | KHC ® Content 1 Use 6.10 Socket ....27 1.1 Intended use ....3 6.11 Energy monitoring . -
Page 3: Use
RoofVent KH | KC | KHC ® 1 Use 1.1 Intended use RoofVent ® units are supply and extract air handling units for heating and cooling spaces up to 25 m in height with central heat and cold supply. They have the following functions: ■... -
Page 4: Safety
Ensure that all access doors are properly closed to prevent water entry through the roof unit. ■ 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. ■... -
Page 5: Decommissioning
RoofVent KH | KC | KHC ® Safety 2.3 Decommissioning ■ Disconnect the power supply with the main switch in the control panel. Caution The use of condensers can pose a danger of fatal injury from directly touching live parts even after the unit is switched off. Only open the access doors after waiting 3 minutes. -
Page 6: Construction And Operation
RoofVent KH | KC | KHC ® Construction and operation 3 Construction and operation 3.1 Construction RoofVent ® units consist of the following components: ■ Roof unit with energy recovery ■ Below-roof unit ■ Roof unit with energy recovery ■ Below-roof unit Connection module Heating section... - Page 7 RoofVent KH | KC | KHC ® Construction and operation ■ Condensate separator 12 13 (RoofVent ® KC, KHC only) ■ Cooling coil (RoofVent KC, KHC only) ® ■ Heating coil (RoofVent KH, KHC only) ® ■ Access panel, coil ■...
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Page 8: Function Diagram
RoofVent KH | KC | KHC ® Construction and operation 3.2 Function diagram ■ ■ Fresh air Condensate separator (RoofVent KC, KHC only) ® ■ ■ Fresh air filter with differential pressure switch Air-Injector with actuator ■ ■ Temperature sensor air inlet ER (optional) Supply air temperature sensor ■... -
Page 9: Operating Modes
RoofVent KH | KC | KHC ® Construction and operation 3.3 Operating modes The units have the following operating modes: ■ Ventilation ■ Ventilation (reduced) ■ Air quality ■ Recirculation ■ Exhaust air ■ Supply air ■ Standby The TopTronic ®... - Page 10 RoofVent KH | KC | KHC ® Construction and operation Code Operating mode Description AQ_VE Air quality Ventilation: ■ Supply air fan ....MIN-MAX Exhaust air fan ....MIN-MAX When ventilation requirements are high or the room air humidity Energy recovery ....0-100 % is too high, the unit heats or cools in pure ventilation operation.
- Page 11 Connecting a room thermostat makes it Heating/cooling ....on possible to specify a room temperature set value. Forced heating can be activated and set as required by the Hoval service technician. Table 1: Operating modes of RoofVent ®...
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Page 12: Type Code
RoofVent KH | KC | KHC ® Type code 4 Type code KH - 9 B C - K1 / ST . -- / V0 . D1 . LU / AF . SI / M . KP . -- . SD / TC . EM . PH . RF Unit type Unit with heating section Unit with heating/cooling section... - Page 13 RoofVent KH | KC | KHC ® Type code KH - 9 B C - K1 / ST . -- / V0 . D1 . LU / AF . SI / M . KP . -- . SD / TC . EM . PH . RF Silencers outside without Fresh air and exhaust air silencer...
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Page 14: Technical Data
RoofVent KH | KC | KHC ® Technical data 5 Technical data 5.1 Application limits Fresh air temperature min. °C – 30 Extract air temperature max. °C Moisture content of extract air max. g/kg Units in ColdClimate design: Fresh air temperature min. -
Page 15: Electrical Connection
RoofVent KH | KC | KHC ® Technical data 5.4 Electrical connection Unit type KH-6 KH-9 KC-6 KC-9 KHC-6 KHC-9 Supply voltage V AC 3 × 400 3 × 400 3 × 400 3 × 400 3 × 400 3 × 400 Permitted voltage tolerance ±... -
Page 16: Heat Output
RoofVent KH | KC | KHC ® Technical data 5.6 Heat output Fresh air temp. -15 °C ∆p Size Type °C 46.0 13.7 25.0 23.4 1974 KH-6 67.2 34.9 18.9 31.8 2885 110.2 78.0 13.0 48.9 4736 87.2 39.9 22.1 28.8 3748 KH-9... -
Page 17: Cooling Capacity
RoofVent KH | KC | KHC ® Technical data 5.7 Cooling capacity ∆p ∆p Size Type °C kg/h °C kg/h Fresh air conditions 32 °C / 40 % 32 °C / 60 % KC-6 29.2 42.1 20.4 17.3 6022 18.9 26.6 56.4 17.9... -
Page 18: Roofvent ® Kh Dimensions And Weights
RoofVent KH | KC | KHC ® Technical data 5.8 RoofVent KH dimensions and weights ® 2380 1950 ■ ■ Roof unit with energy recovery Heating section ■ ■ Connection module Air-Injector ■ ■ Coil access panel Return ■ ■ Connection box access panel Flow Fig. - Page 19 RoofVent KH | KC | KHC ® Technical data Unit type KH-6 KH-9 1400 1750 1040 1240 1048 1100 Connection module 1190 1440 1940 1230 1480 1980 1030 1530 1030 1530 1700 1950 2200 2700 1850 2100 2350 2850 Table 10: RoofVent ®...
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Page 20: Roofvent ® Kc Dimensions And Weights
RoofVent KH | KC | KHC ® Technical data 5.9 RoofVent KC dimensions and weights ® 2380 1950 ■ ■ Roof unit with energy recovery Air-Injector ■ ■ Connection module Return ■ ■ Coil access panel Flow ■ ■ Connection box access panel Condensate connection G1"... - Page 21 RoofVent KH | KC | KHC ® Technical data Unit type KC-6 KC-9 1400 1750 1040 1240 1048 1100 Connection module 1190 1440 1940 1230 1480 1980 1030 1530 1030 1530 2050 2300 2550 3050 2160 2410 2660 3160 Table 13: RoofVent ®...
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Page 22: Roofvent ® Khc Dimensions And Weights
RoofVent KH | KC | KHC ® Technical data 5.10 RoofVent KHC dimensions and weights ® 2380 1950 ■ ■ Roof unit with energy recovery Air-Injector ■ ■ Connection module Heating circuit return ■ ■ Coil access panel Heating circuit flow ■... - Page 23 RoofVent KH | KC | KHC ® Technical data Unit type KHC-6 KHC-9 1400 1750 1040 1240 1048 1100 Connection module 1190 1440 1940 1230 1480 1980 1030 1530 1030 1530 2320 2570 2820 3320 2460 2710 2960 3460 Table 16: RoofVent ®...
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Page 24: Options
RoofVent KH | KC | KHC ® Options 6 Options 6.1 ColdClimate design RoofVent ® units in ColdClimate design are suitable for use in regions where outside temperatures fall below – 3 0 °C. The minimum outside temperature allowed is – 4 0 °C. The following features ensure trouble-free operation of the system: Plate heat exchanger ■... -
Page 25: Connection Module
RoofVent KH | KC | KHC ® Options 6.2 Connection module The connection module is available in 4 lengths for adapting the RoofVent ® unit to local conditions. 6.3 Design with 2 Air-Injectors A supply air duct can be connected to the RoofVent ®... -
Page 26: Fresh Air And Exhaust Air Silencers
RoofVent KH | KC | KHC ® Options 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. -
Page 27: Supply Air And Extract Air Silencers
RoofVent KH | KC | KHC ® Options 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. -
Page 28: Energy Monitoring
RoofVent KH | KC | KHC ® Options 6.11 Energy monitoring Energy monitoring makes it possible to display the energy saved by heat and cool recovery. For this purpose, 2 additional temperature sensors are installed in the RoofVent ® units; they record the air inlet and air outlet temperatures of the plate heat exchanger. -
Page 29: Transport And Installation
RoofVent KH | KC | KHC ® Transport and installation 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: ■... -
Page 30: Storage
RoofVent KH | KC | KHC ® Transport and installation Options The following optional components are supplied separately: ■ Fresh air and exhaust air silencer (on separate pallet; bolts, hinges and screws enclosed) ■ Mixing valve (behind the extract air grille) ■... -
Page 31: Requirements For The Installation Site
RoofVent KH | KC | KHC ® Transport and installation 7.3 Requirements for the installation site RoofVent ® unit ■ Make sure that the roof has sufficient load-bearing capacity and that the roof frames correspond to the specifications in the design handbook. ■... -
Page 32: Installation
RoofVent KH | KC | KHC ® Transport and installation 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. - Page 33 RoofVent KH | KC | KHC ® Transport and installation 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: ■...
- Page 34 RoofVent KH | KC | KHC ® Transport and installation 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: ■...
- Page 35 RoofVent KH | KC | KHC ® Transport and installation 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. 24). ■...
- Page 36 RoofVent KH | KC | KHC ® Transport and installation 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. 27). ■...
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Page 37: Connecting Air Ducts And Air-Injectors
RoofVent KH | KC | KHC ® Transport and installation 7.5 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. -
Page 38: Hydraulic Installation
RoofVent KH | KC | KHC ® Transport and installation 7.6 Hydraulic installation ■ Connect the heating or cooling coil in accordance with the hydraulic diagram. ■ Depending on local conditions, check whether compensators for linear expan- sion are required for the supply and return lines and/or articulated connections are required for the units. -
Page 39: Condensate Connection
RoofVent KH | KC | KHC ® Transport and installation 7.7 Condensate connection Condensate arising in cooling units must be removed via a condensate-proof line. ■ Install and insulate the supplied trap on the condensate connection of the unit. ■ Dimension the slope and cross-section of the condensate line so that no condensate backflow takes place. -
Page 40: Electrical Installation
RoofVent KH | KC | KHC ® Transport and installation 7.8 Electrical installation Caution Danger of electric shocks. The electrical installation must only be carried out by a qualified electrician. Please note the following: ■ Observe all relevant regulations. ■ Choose the dimensions of the cable cross sections in line with the applicable regulations. - Page 41 RoofVent KH | KC | KHC ® Transport and installation ■ Injection system / Mixing system / ColdClimate design: – Wire up the pump and mixing valve to the connection box. ■ Design with 2 Air-Injectors: – Install the enclosed supply air temperature sensor in the supply air duct and wire it up to the connection box.
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Page 42: Operation
RoofVent KH | KC | KHC ® Operation ■ Return temperature sensor (option) ■ Frost controller ■ Condensate pump (option) ■ Actuator Air-Injector ■ Supply air temperature sensor ■ Power supply RoofVent ® ■ Zone bus ■ Mixing valve ■ Pump (option) ■... -
Page 43: Operation
RoofVent KH | KC | KHC ® Operation – Laying of bus cables conforming to wiring diagram – Installation and wiring of all sensors (room temperature sensor, fresh air sensor, ...) – Wiring of external operator terminals – Wiring of external inputs and outputs ■... -
Page 44: Maintenance And Repair
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. 9.2 Maintenance Maintenance schedule Activity Procedure Interval... - Page 45 RoofVent KH | KC | KHC ® Maintenance and repair Changing the filter Caution Crushing hazard from closing dampers. Only open the access doors when the 'Filter change' illuminated button is constantly illuminated (waiting period of approx. 2 min). ■ Press the 'Filter change' illuminated button.
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Page 46: Repair
RoofVent KH | KC | KHC ® Dismantling 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... -
Page 47: Disposal
RoofVent KH | KC | KHC ® Disposal 11 Disposal ■ Recycle metal components. ■ Recycle plastic parts. ■ Dispose of electric and electronic parts via hazardous waste. ■ Dispose of oil-fouled parts in accordance with local regulations. ■ Dispose of the filters in accordance with local regulations. –... - Page 48 RoofVent KH | KC | KHC ® Contact International Hoval Aktiengesellschaft 9490 Vaduz Liechtenstein Tel. +423 399 24 00 info.klimatechnik@hoval.com www.hoval.com United Kingdom Hoval Ltd. Northgate, Newark Notts NG24 1JN Tel. 01636 672711 hoval@hoval.co.uk www.hoval.co.uk 4 214 745-en-06...
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