RoofVent Design Handbook LHW, LKW 2017 by Hoval USA

More catalogs by Hoval USA | RoofVent Design Handbook LHW, LKW 2017 | 280 pages | 2017-03-16

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Catalog RoofVent Design Handbook LHW, LKW 2017

20 25 x 20 where is the oil filter on the 8 n chilled water system design exhaust air fan air cooled condenser air cooled condensation differential pressure switch plate heat exchangers plate heat exchanger balancing valve valve air temperature sensor air temperatur sensor power supply circuit gas shut off outside air temperature sensor control wiring of circuit breaker air handling unit air handling units air shut off valve air shut off valves compressor shut off valve heating and cooling pumps chilled water systems air supply shut off valve automatic air vent chilled water system supply shut off valve air conditioning air duct automatic air vent pipes automatic air vent control electric shut off valve air handle unit control heating and cooling heat and cool heating and cooling system diagram three way control valve heat and cool line air handling unit lines heating and cooling system quick release fastener cable cross section current cable cross section electronic control valves for inlet pressure control heating and cooling tools air conditioning unit wiring diagram for ac unit k and n air filter pressure switch for air temperature and humidity the maximum value 4 pin to 2 pin 4 pin to 8 pin 3 pin to 7 pin 5 pin to 4 pin 6 pin to 7 pin

RoofVent Design Handbook LHW, LKW 2017 is listed under these categories

Home & Garden > Heating Cooling & Air

Featured catalog pages of RoofVent Design Handbook LHW, LKW 2017

roofvent® lhw transport and installation 7.3  electrical installation caution danger from electric current the electrical installation must be carried out by a qualified electrician ■■ comply with all relevant legislation e.g en 60204-1 ■■ for long supply lines select cable cross-sections in accordance with the technical regulations ■■ carry out electrical installation in accordance with the wiring diagram for wiring within the unit see fig b7 ■■ install the system bus for the control systems separately from the mains cables ■■ establish plug connections from the air-injector to the filter box and from the filter box inside to the roof unit ■■ wire the mixing valves to the connection box there is a plug connection for hoval magnetic mixing valves ■■ for injection system wire the pump to the digiunit terminal box ■■ make sure there is onsite overload protection equipment for the

roofvent® lkw transport and installation 7.3  electrical installation caution danger from electric current electrical installation must be carried out by a qualified electrician ■■ comply with all relevant legislation e.g en 60204-1 ■■ for long supply lines select cable cross-sections in accordance with the technical regulations ■■ carry out electrical installation in accordance with the wiring diagram for wiring within the unit see fig c8 ■■ install the system bus for the control systems separately from the mains cables ■■ establish plug connections from the air-injector to the filter box and from the filter box inside to the roof unit ■■ wire the mixing valves to the connection box there is a plug connection for hoval magnetic mixing valves ■■ for injection system wire the pump to the digiunit terminal box ■■ make sure there is onsite overload protection equipment for the

roofvent® twin heat transport and installation component description voltage cable digiunit terminal box power supply 3 x 400 v 5 x 6 mm² zone control panel 3-phase variant zone control panel 1-phase novanet system bus option comment 2 x 0.16 mm² for bus cable specifications see part k chap 2.4 heating pump 3 x 400 v 4 x 2.5 mm² for injection system power supply 3 x 400 v 5 x … mm² depending on options novanet system bus 2 x 0.16 mm² for bus cable specifications see part k chap 2.4 room air sensor 2 x 1.5 mm² max 170 m shielded cable fresh air sensor 2 x 1.5 mm² max 170 m d enable heating volt-free max 230 v 3 x 1.5 mm² 2 a max per zone trouble input heating 24 v 3 x 1.5 mm² per zone collective trouble indicator volt-free max 230 v 3 x 1.5 mm² max 6 a special function on terminal 24 v 3 x 1.5 mm² per special function power supply for roofvent® twin heat 3 x 400 v 5 x 6 mm² per roofvent® twin heat main pump 3 x 400 v 4 x 2.5 mm² per

roofvent® twin cool transport and installation component description voltage cable digiunit terminal box power supply 3 x 400 v 5 x 6 mm² zone control panel 3-phase variant zone control panel 1-phase novanet system bus option comment 2 x 0.16 mm² for bus cable specifications see part k chap 2.4 heating/cooling pump 3 x 400 v 4 x 2.5 mm² for injection system per pump power supply 3 x 400 v 5 x … mm² depending on options novanet system bus 2 x 0.16 mm² for bus cable specifications see part k chap 2.4 room air sensor 2 x 1.5 mm² max 170 m shielded cable fresh air sensor 2 x 1.5 mm² max 170 m enable heating volt-free max 230 v 3 x 1.5 mm² 2 a max per zone enable cooling volt-free max 230 v 3 x 1.5 mm² 2 a max per zone trouble input heating 24 v 3 x 1.5 mm² per zone trouble input cooling 24 v 3 x 1.5 mm² per zone collective trouble indicator volt-free max 230 v 3 x 1.5 mm² max 6 a special function on terminal 24 v 3 x 1.5 mm² per special

roofvent® twin pump transport and installation the following guidelines are important when preparing for assembly ventilation unit ■■ a forklift truck or a crane is required for assembling the below-roof unit on site ■■ the units are assembled from roof level a crane or helicopter is required ■■ to transport the unit to the roof 2 hoisting slings are required approx length 6 m if steel cables or chains are used the unit corners must be properly protected ■■ make sure that the roof frames correspond to the specifications in part l system design ■■ define the desired orientation of the units ■■ the units are held in the roof frame by means of their own weight silicone pu foam or similar is required for sealing ■■ for units with exhaust air silencers additional attachment to the roof frame is required ■■ follow the assembly instructions included ≥ 800 mm erq250 fig f6: 

roofvent® condens transport and installation 7  transport and installation 7.2  hydraulic installation 7.1  assembly caution risk of injury as a result of incorrect handling have transport and assembly work carried out by trained specialists  roofvent® condens units are delivered on wooden pallets in three sections roof unit below-roof unit 1 box with accessories for the conduit parts which belong together bear the same unit number note depending on the optional components the delivery may consist of multiple parts such as when a supply air silencer is installed in this case a forklift truck or a crane is required for assembling the below-roof unit on site the following guidelines are important when preparing for assembly ■■ the units are assembled from roof level a crane or helicopter is required ■■ two slings are required for transport to the roof sling length approx 6 m if steel cables or chains are used the unit corners

roofvent® lh transport and installation 7  transport and installation 7.2  hydraulic installation 7.1  assembly caution risk of injury as a result of incorrect handling have transport and assembly work carried out by trained specialists  roofvent® lh units are delivered in 2 sections roof unit below-roof unit on a wooden pallet parts which belong together are labelled with the same unit number note depending on the optional components the delivery may consist of multiple parts such as when a supply air silencer is installed in this case a forklift truck or a crane is required for assembling the below-roof unit on site the following guidelines are important when preparing for assembly ■■ the units are assembled from roof level a crane or helicopter is required ■■ to transport the unit to the roof 2 hoisting slings are required approx length 6 m if steel cables or chains are used the unit corners must be properly protected

roofvent® lk design example total ventilation cold requirement qv in kw qv v · ρ· c · tfresh – troom ρ c tfresh troom qv  =  18 360 · 1.2 · 2.79 · 10-4 · 30 – 24 qv = 37 kw specific air density 1.2 kg/m³ specific heat capacity of the air 2.79 · 10-4 kwh/kg k design fresh air temperature in °c desired room temperature in °c b c required sensible cooling capacity total qc in kw qc qcl qv qcl qc  =  260 37 qc = 297 kw e cooling load in kw required sensible cooling capacity per unit q in kw qc n q selection of coil type ■■ first use table i8 to define the air inlet temperature at the cooling coil ■■ using the required cooling capacity per unit and the air inlet conditions at the cooling coil select the required coil type from table i9 or table i10 q  =  297 12 q = 25 kw e for the fresh air conditions

options heating and cooling in the 4-pipe system <2m beefghijl digiunit terminal box fresh air sensor zone control panel novanet system bus room air sensor enable heating power supply trouble input heating enable cooling connection box trouble input cooling heating control panel magnetic mixing valve cooling main pump heating heating circuit magnetic mixing valve heating main pump cooling cooling circuit collective trouble indicator digimaster l m n fig j8:  conceptual drawing for hydraulic diverting system with cooling in the 4-pipe system

roofvent® design handbook subject to technical alterations art.no 4 210 755 – edition 02 / 2017 © hoval aktiengesellschaft liechtenstein 2012 responsibility for energy and environment the hoval brand is internationally known as one of the leading suppliers of indoor climate control solutions more than 70 years of experience have given us the necessary capabilities and motivation to continuously develop exceptional solutions and technically advanced equipment maximising energy efficiency and thus protecting the environment are both our commitment and our incentive hoval has established itself as an expert provider of intelligent heating and ventilation systems that are exported to over 50 countries worldwide hoval heating technology as a full range supplier hoval helps its customers to select innovative system solutions for a wide range of energy sources such as heat pumps biomass solar energy gas oil and district heating services range from