PREEVA air handling unit

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1 APPICATINS Heating, ventilation, cooling, heat recovery >> FACTRIES >> commercial premises >> WAREHUSES >> HAS >> SPRTS & EISURE >> PACES F WRSHIP >> RESTAURANTS PREEVA air handling unit

PREEVA Series GAS FIRED HEATING, VENTIATIN AND CING UNITS Introduction The Reznor PREEVA is a new generation of gas fired air heaters to provide combined heating and ventilation with optional cooling.

The units are available as non-condensing heaters with thermal efficiencies above 91% or fully condensing heaters with thermal efficiencies of 102% (ncv).

The design combines high thermal efficiency, quality components and ease of maintenance for enhanced life expectancy and reduced life cycle costs.

2 PREEVA Series GAS FIRED HEATING, VENTIATIN AND CING UNITS Introduction The Reznor PREEVA is a new generation of gas fired air heaters to provide combined heating and ventilation with optional cooling. The units are available as either indoor or outdoor models with a wide range of heat outputs and cooling capacities. The units are available as non-condensing heaters with thermal efficiencies above 91% or fully condensing heaters with thermal efficiencies of 102% (ncv). PREEVA units have been developed utilising the proven engineering expertise gained by Reznor, with over 125 years experience of gas appliance manufacture. The design combines high thermal efficiency, quality components and ease of maintenance for enhanced life expectancy and reduced life cycle costs. The new range provides higher thermal efficiencies and reduced emissions with the addition of optional cooling and improved air filtration. To reduce on site installation time, units are supplied to site pre-assembled on a heavy gauge galvanised base and are fully wired complete with all motor starters. Where site access is restricted, the units can also be supplied (at additional cost) in sections for on site assembly. Features PREEVA gas-fired units incorporate patented 4-pass heat exchanger technology for optimum efficiency and enhanced life expectancy SHH and RHH models also incorporate a patented MacroChannel heat exchanger to provide 8-pass heat exchanger design with full load efficiency of 102% Choice of titanium stabilised aluminised steel or stainless steel heat exchangers to suit application Single burner with multi-try ignition provides enhanced reliability Patented self-aligning burner eliminates possible flame impingement and premature heat exchanger failure Quality and Standards CE EN1020 IS 9001 Model Range PREEVA units are available as indoor models (SDH / SHH) or outdoor weatherproof models (RDH / RHH) suitable for rooftop or low level installation. 7 non-condensing models with heat output ranging from 24-97kW 3 fully condensing models with heat output ranging from 54-99kW Cooling 18-65kW Air volumes External static pressure up to 400Pa Heat recovery unit SHH Gas fired condensing unit 102% Thermal Efficiency SDH Standard efficiency unit

Air Distribution The units are ideal for ducted installations with a choice of motor size and drives to provide external static pressures up to 400 Pascal (dependent on options fitted).

The units may also be used for free-blowing applications with a choice of optional outlet louvres, induction nozzles and 30 or 60 downflow heads.

Quick, cost saving installation Available in many colours Evenly diffused air distribution without draughts ow noise Air Distribution Nozzles For large open areas, air induction nozzles provide even

3 Air Distribution The units are ideal for ducted installations with a choice of motor size and drives to provide external static pressures up to 400 Pascal (dependent on options fitted). An adjustable pulley is fitted to the motor to simplify on site airflow adjustment for final balancing. The units may also be used for free-blowing applications with a choice of optional outlet louvres, induction nozzles and 30 or 60 downflow heads. Units may also be supplied with purpose designed air distribution systems. PVC ducts ne of the possibilities are perforated PVC ducts. Quick, cost saving installation Available in many colours Evenly diffused air distribution without draughts ow noise Air Distribution Nozzles For large open areas, air induction nozzles provide even air distribution with automatic high level air recirculation. The nozzles are capable of an air throw of up to 60 metres and the high volume turnover induced eliminates the requirement to install additional high level recirculation fans. Nozzles may be grouped on a distribution plenum to provide controlled terminal velocities on both heating and cooling modes or may be supplied complete with mounting plates for fitting to conventional grille shoes. The rubber nozzles provide excellent acoustic reduction at high outlet velocities and may be adjusted through 60 for controlled air direction. ption: PREEVA Hybrid model PREEVA Hybrid models have a body and blowers that are oversized compared to the gas fired heat exchanger, so that they provide the same heating capacity but at a higher air flow. The advantages are: Reduced stratification by increased air throw and improved induction rate, as well as by a lower gradient between the supplied air and the ambient air Free-blowing units can be installed at a greater height Perfectly suited for PVC ducts and plenums with nozzles AIRFW Service Access All motor and burner controls are accessed from a single side. Units can be supplied with the controls access on either the right hand or left hand side, this must be clearly specified at order stage and cannot be changed once the units are manufactured. AIRFW eft hand access Ri h h Right hand access d AIRFW AIRFW Ri h h d

PREEVA Series GAS FIRED HEATING, VENTIATIN AND CING UNITS SDH and SHH Indoor Models Chassis and body Units are supplied factory assembled on a galvanised frame.

All service access panels are hinged for ease of access with lift off hinges allowing for access where space is restricted. ptional insulation provides thermal and acoustic insulation.

4 PREEVA Series GAS FIRED HEATING, VENTIATIN AND CING UNITS SDH and SHH Indoor Models Chassis and body Units are supplied factory assembled on a galvanised frame. Standard units are supplied with powder coat finish RA 9010 (white). ther colours available on request. All service access panels are hinged for ease of access with lift off hinges allowing for access where space is restricted. ptional insulation provides thermal and acoustic insulation. Heat exchanger Patented 4-pass vertical heat exchanger provides high thermal efficiency combined with extended life expectancy. Integral condensate drain between third and fourth pass removes the risk of condensate build up when units operate on fresh air during winter periods. SHH model consists of the above heat exchanger with aluminium MacroChannel section to provide increased thermal efficiency up to 102% (ncv). Burner Single burner with multi-try ignition provides enhanced reliability. Patented self-aligning burner eliminates risk of flame impingement and premature heat exchanger failure. Burners may be specified for on/off, high/low or fully modulating control. A microprocessor burner control provides full safety monitoring. Flue Fan assisted flue with venter fan mounted on top of stainless steel collection chamber. For SHH units an epoxy coated aluminium venter fan is fitted. Balanced flue operation eliminates the requirement for additional plant room ventilation. The balanced flue terminal provides both the flue outlet and combustion air inlet and requires only a single building penetration. ptional balanced flue wall outlet or roof outlet terminals are available. Units are also CE certified for fan assisted flue installations where combustion air is drawn from within the heated space or ventilated plant room. standard heat exchanger of the SDH and RDH, also the primary heat exchanger of the SHH and RHH Air handling Belt driven DIDW forward curved fans, with a choice of single or three phase motors. Three phase motor 0.75kW and above are energy efficient class IE2. Fans are selected for low noise operation with external static pressure up to 400 Pa. Adjustable drive pulley allows for on-site system balancing. Mixing box Aluminium aerofoil section dampers with edge seals for precise control of fresh air and recirculation air. Damper actuators may be factory fitted and wired to provide occupancy ventilation or fresh air free cooling. A wide range of filters are available with optional manometer or pressure switch to provide dirty filter indication. ptional Cooling and Heat Pump DX or chilled water cooling coils may be added where comfort cooling is required. Heat pumps, which are always placed outdoors, can also be connected to the DX coil. They provide a supplement or even an alternative to gas fired heating, for example where gas fired heating is not suited, or simply where an application with both heating and cooling is required. Units without a gas fired section but with a DX coil + heat pump are available, as well as units with both a gas fired section and DX coil + heat pump. Contact Reznor for more information about PREEVA combined with heat pumps. Controls Units are fully wired complete with all motor starters, an optional external isolator may also be fitted. Unit electrical protection IP20. A wide variety of control options is available to provide fully integrated control.

RDH and RHH utdoor Models Chassis and body The RDH and RHH outdoor units are supplied fully weatherproof complete with galvanised base frame, integral gutters and integrated flue terminal.

All service access panels are hinged for ease of access with lift off hinges allowing for access where space is restricted.

Integral condensate drain between third and fourth pass removes the risk of condensate build up when units operate on fresh air during winter periods.

5 RDH and RHH utdoor Models Chassis and body The RDH and RHH outdoor units are supplied fully weatherproof complete with galvanised base frame, integral gutters and integrated flue terminal. ptional roof curbs also available. Zinc plated pre-painted panels are insulated to provide thermal and acoustic insulation. All service access panels are hinged for ease of access with lift off hinges allowing for access where space is restricted. Heat exchanger Patented 4-pass vertical heat exchanger provides high thermal efficiency combined with extended life expectancy. Integral condensate drain between third and fourth pass removes the risk of condensate build up when units operate on fresh air during winter periods. RHH model consists of the above heat exchanger with aluminium MacroChannel section to provide increased thermal efficiency up to 102% (ncv). Burner Single burner with multi-try ignition provides enhanced reliability. Patented self-aligning burner eliminates risk of flame impingement and premature heat exchanger failure. Burners may be specified for on/off, high/low or fully modulating control. A microprocessor burner control provides full safety monitoring. Flue Fan assisted flue with venter fan mounted on top of stainless steel collection chamber. For RHH units an epoxy coated aluminium venter fan is fitted. A flue terminal is installed at the service side of the unit. Air handling An intake hood with water separator is available on RDH and RHH units. For the air inlet, belt driven DIDW forward curved fans, with a choice of single or three phase motors. Three phase motor 0.75kW and above are energy efficient class IE2. Fans are selected for low noise operation with external static pressure up to 400 Pa. Adjustable drive pulley allows for on-site system balancing. The RDH and RHH have a rear duct spigot or an optional cabinet with a bottom or top outlet. Mixing box Aluminium aerofoil section dampers with edge seals for precise control of fresh air and recirculation air. Damper actuators may be factory fitted and wired to provide occupancy ventilation or fresh air free cooling. A wide range of filters are available with optional manometer or pressure switch to provide dirty filter indication. ptional Cooling and Heat Pump DX or chilled water cooling coils may be added where comfort cooling is required. Heat pumps can also be connected to the DX coil. They provide a supplement or even an alternative to gas fired heating, for example where gas fired heating is not suited or simply where an application with both heating and cooling is required. Units without a gas fired section but with a DX coil + heat pump are available, as well as units with both a gas fired section and DX coil + heat pump. Contact Reznor for more information about PREEVA combined with heat pumps. The heat pump can be installed separately from the PREEVA, or together with the PREEVA on a customized base frame offered by Reznor. This combination is supplied fully wired, connected and tested, complete with pre-programmed controls. Contact Reznor for more information about PREEVA combined with heat pumps. Controls Units are fully wired complete with all motor starters, an optional external isolator may also be fitted. Unit electrical protection IPX4D. A wide variety of control options is available to provide fully integrated control. option: DX coil for cooling and/or heat pump option: intake hood with water separator option: downflow cabinet

PREEVA Heat Recovery GAS FIRED HEATING, VENTIATIN AND CING UNITS Introduction Heat recovery module is an option on the PREEVA units.

This cross flow heat exchanger is Eurovent certified. Filters of different qualities are available to filter the fresh air and the returned air.

In this way, less energy is needed to heat the ventilation air. The efficiency of the heat exchanger runs up from 52 to 68% according the application.

6 PREEVA Heat Recovery GAS FIRED HEATING, VENTIATIN AND CING UNITS Introduction Heat recovery module is an option on the PREEVA units. The pre-insulated module contains a cross flow heat exchanger with an incorporated summer bypass and a return air fan. This cross flow heat exchanger is Eurovent certified. Filters of different qualities are available to filter the fresh air and the returned air. peration The fresh air, taken in by the PREEVA unit is preheated by return / exhaust air passing through the cross flow heat exchanger. In this way, less energy is needed to heat the ventilation air. The efficiency of the heat exchanger runs up from 52 to 68% according the application. Models RDH and RHH - HRS: outdoors installation, with standard heat recovery efficiency HRH: outdoors installation, with high heat recovery efficiency SDH and SHH - HRS: indoors installation, with standard heat recovery efficiency 9 o C 0 o C 11 o C HRH: indoors installation, with high heat recovery efficiency 30 o C 20 o C

AIRFW AIRFW AIRFW AIRFW Ri h h d AIRFW Ri h h d Ri h h d Flue Installation For internal applications the balanced flue terminal provides both the combustion air inlet and flue outlet from a single

Additional flue and combustion air pipes may be added, up to a maximum of nine metres of flue pipe, plus nine metres* of combustion air pipe. (This reduces by 1.5 metres for every 90 bend fitted).

7 AIRFW AIRFW AIRFW AIRFW Ri h h d AIRFW Ri h h d Ri h h d Flue Installation For internal applications the balanced flue terminal provides both the combustion air inlet and flue outlet from a single building penetration. The terminals are ordered separately from the heaters to suit either a wall outlet or roof outlet. Additional flue and combustion air pipes may be added, up to a maximum of nine metres of flue pipe, plus nine metres* of combustion air pipe. (This reduces by 1.5 metres for every 90 bend fitted). A differential pressure switch shuts down the unit in the event of inadequate combustion air, blocked flue or flue fan failure. To comply with CE approvals, balanced flue appliances must be used with the manufacturer s balanced flue system. Balanced flue roof outlet (type C32) Balanced flue wall outlet (type C12) eliminates expensive roof opening and flashing The units are also certified for fan assisted flue installations, where the combustion air is to be drawn from inside the building; an alternative wall or roof terminal is required for this application. Maximum flue length 14 metres (12 metres on model 100). Shown are flue types C32, C12 and C52. ther flue types are B22, C42, C62 and C82.** Combustion air through wall, flue outlet through the roof (C52) Heater positions and flue arrangements are indicative. For heater and flue clearances please refer to the manufacturer's guidelines. Separate combustion air and flue pipes (type C12) for applications where wall thickness exceeds maximum length shown in flue dimension table A *up to 7.5 metres for model 100 A D C E D G B ** Please check local installation norms. Some flue types may not be allowed in some countries such as C62 in Belgium. G F B FUE DIMENSINS (mm) Model Vertical concentric flue terminal Horizontal concentric flue terminal Ø100mm Ø130mm Ø100mm Ø130mm A B C n/a n/a D E n/a n/a F (maximum wall thickness) n/a n/a G

8 PREEVA Series: SDH and R GAS FIRED HEATING, VENTIATIN AND CING UNITS SDH Indoor Model 46 A G C E F M M H B N I J K 100 D Front View Side View Rear View 1. Combustion air inlet 2. Flue outlet 3. Electrical connections 4. Gas connections 5. Access door P Q Plan View DIMENSINS Model SDH25 SDH30 SDH35 SDH43 SDH55 SDH73 SDH100 A mm B mm C mm D mm E mm F mm G mm H mm I mm J mm K mm mm M mm N mm mm P mm Q mm Flue and combustion collars (1,2) mm Typical configuration shown above for SDH complete with mixing box. For alternative configurations please consult Reznor. Unit shown with left hand access, units can also be supplied right hand access. eft hand access or right hand access must be specified on ordering as this cannot be changed once the units are manufactured. All dimensions have a tolerance of +/- 3mm

9 DH RDH utoor Model C R A M M H B N J 100 D Front View Side View Rear View Q 1. Combustion air inlet 2. Flue outlet 3. Electrical connections 4. Gas connections 5. Access door P Plan View DIMENSINS Model RDH25 RDH30 RDH35 RDH43 RDH55 RDH73 RDH100 A mm B mm C mm D mm H mm I mm J mm K mm mm M mm N mm mm P mm Q mm R mm Typical configuration shown for RDH complete with inlet weatherhood. For alternative configurations please consult Reznor. Unit shown with left hand access, units can also be supplied right hand access. eft hand access or right hand access must be specified on ordering as this cannot be changed once the units are manufactured. All dimensions have a tolerance of +/- 3mm

10 PREEVA Series: SHH and R GAS FIRED HEATING, VENTIATIN AND CING UNITS SHH Indoor Model (Condensing heaters with optional filters and mixing dampers) A C 46 M M N H B G I 100 E J K D Front View Side View Rear View Q 1. Combustion air inlet 2. Flue outlet 3. Electrical connections 4. Gas connections 5. Access door 6. Condense Drain P Plan View DIMENSINS Model SHH55 SHH83 SHH102 A B C D E G H I J K M N P Q Flue and combustion collars (1,2) Typical configuration shown above for SHH complete with mixing box. For alternative configurations please consult Reznor. Unit shown with left hand access, units can also be supplied right hand access. eft hand access or right hand access must be specified on ordering as this cannot be changed once the units are manufactured. All dimensions have a tolerance of +/- 3mm

11 HH RHH utdoor Model 46 A C R M M N H B I J K D Front View Side View Rear View Q 1. Combustion air inlet 2. Flue outlet 3. Electrical connections 4. Gas connections 5. Access door 6. Condense Drain P Plan View DIMENSINS Model RHH55 RHH83 RHH102 A mm B mm C mm D mm H mm I mm J mm K mm mm M mm N mm mm P mm Q mm R mm Typical configuration shown for RHH complete with mixing box plus inlet weatherhood. For alternative configurations please consult Reznor. Unit shown with left hand access, units can also be supplied right hand access. eft hand access or right hand access must be specified on ordering as this cannot be changed once the units are manufactured. All dimensions have a tolerance of +/- 3mm

12 PREEVA Series SDH & RDH TECHNICA DATA Model SDH25 RDH25 SDH30 RDH30 SDH35 RDH35 SDH43 RDH43 SDH55 RDH55 SDH73 RDH73 SDH100 RDH100 Nominal heat output Minimum thermal efficiency (ncv) kw % Gas Consumption 1 Natural gas G20 Natural gas G25 Propane G31 Gas connection 2 kg/h Rc ¾ Airflow 15 o C 15 o C cooling capacity utput cooling capacity Maximum with DX Coil Maximum with cooling water coil kw kw Motor power Minimum Maximum m m Maximum external static pressure Pa 400 Electrical supply kw : 230/240V 1N - 50Hz kw : 380/400V 3N - 50Hz Net weight kg SHH & RHH TECHNICA DATA Model Nominal heat output Minimum thermal efficiency (ncv) Gas Consumption 1 Natural gas G20 Natural gas G25 Propane G31 Gas connection 2 Airflow 15 o C 15 o C cooling capacity utput cooling capacity Maximum with DX Coil Maximum with cooling water coil Motor power Minimum Maximum kw % kg/h Rc kw kw m m SHH55 RHH % SHH83 RHH % Maximum external static pressure Pa 400 SHH102 RHH % Electrical supply kw : 230/240V 1N - 50Hz kw : 380/400V 3N - 50Hz Net weight kg Natural gas G20 Calorific value kw/m3 GCV, inlet gas pressure maximum 50 mbar, minimum 17.5 mbar. Propane G31 Calorific value 14.0kW/kg GCV, inlet gas pressure maximum 50 mbar, minimum 37 mbar Document reference number: GB/REZ/010/ Not supply line size. J&M Sabbestraat 130/A000 B-8930 Menen Belgium Tel. +32(0) Fax. +32(0) reznor.europe@nordyne.com Company Standards and Services: All Reznor products are tested and approved to CE standards. Reznor Europe nv is assessed to IS 9001 Quality Assurance. Reznor offers a service to its customers; including budget schemes, on site technical support and a comprehensive after-sales package. Reznor reserves the right to change specifications without prior notice.

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