Zehnder Rittling FVA series Installation, Operation And Maintenance Manual Download Page 2

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Airflow arrangements

General data

Dimensions and data

General information

Safety considerations

Receiving 11
Unpacking and preparation

Installation 13
Ductwork connections

Wiring diagram

Electrical connections

Enclosing unit

Start-up 22
Water systems

EC Motor

Control operations

Maintenance 26
Replacement parts

Troubleshooting 29
Equipment start-up checklist

Warranty 33

IMPORTANT: Approved submittal documentation,
specific to each project, supersedes the general
guidelines contained within this document.

Summary of Contents for FVA series

Page 1: ...i Cooling Fresh Air Clean Air Heating Vertical Hi Stack Fan Coil Installation Operation and Maintenance ...

Page 2: ...rk connections 16 Wiring diagram 17 Electrical connections 19 Enclosing unit 20 Start up 22 Water systems 23 EC Motor 25 Control operations 25 Maintenance 26 Replacement parts 28 Troubleshooting 29 Equipment start up checklist 32 Warranty 33 IMPORTANT Approved submittal documentation specific to each project supersedes the general guidelines contained within this document ...

Page 3: ... shown in diagrams to the right Outside air available on left or right side of unit opposite riser side Available on both sides with back riser location Optional riser chase available for hideaway units Contact factory for pricing O A O A Riser and supply air discharge designations Example BFNN B Riser location F Supply air 1 location N Supply air 2 location N Outside air location B Back F Front L...

Page 4: ...3 78 6 Heating capacity optional 1 row reheat coil MBH 19 9 23 7 31 6 38 6 48 6 52 0 GPM 2 1 2 4 3 2 4 0 4 9 5 3 PD ft of H2 O 7 5 10 3 17 3 7 1 10 9 12 3 Heating capacity optional 2 row reheat coil MBH 29 2 36 3 52 1 61 2 80 7 88 8 GPM 3 0 3 7 5 3 6 3 8 3 9 1 PD ft of H2 O 5 8 8 7 17 3 8 2 13 8 16 5 CFM High 300 450 650 700 1060 1225 Medium 250 325 450 600 700 850 Low 170 250 330 510 600 630 CFM ...

Page 5: ...sulation Condensate insulation 2 1 2 1 2 3 4 1 2 2 1 2 1 1 2 2 1 2 1 1 2 1 2 1 1 2 3 4 3 4 1 2 1 1 4 3 4 1 1 2 1 3 4 1 1 4 1 2 1 1 4 3 4 3 4 3 4 1 3 4 1 3 4 Notes All dimensions are in inches All dimensions are 1 4 Wiring from electrical entry point to control enclosure is furnished and installed by others in field Risers available from 3 4 to 2 1 2 diameter with 1 2 or 3 4 thick insulation Riser ...

Page 6: ... by others in field Risers available from 3 4 to 2 1 2 diameter with 1 2 or 3 4 thick insulation Riser length is 104 115 standard Back riser location shown See arrangement drawings for available unit configurations Factory mounted risers shown Outside air damper opening is located on left or right side of unit All listed dimensions are approximate and are subject to change without notice Modificat...

Page 7: ...odel FVS slave Notes All dimensions are in inches All dimensions are 1 4 Wiring from electrical entry point to control enclosure is furnished and installed by others in field Outside air damper opening is located on left or right side of unit All listed dimensions are approximate and are subject to change without notice Modifications to the product specifications must be accepted by Zehnder Rittli...

Page 8: ...cceptable riser combinations Supply Return Insulation Condensate Insulation 2 1 2 1 2 3 4 1 2 2 1 2 1 1 2 2 1 2 1 1 2 1 2 1 1 2 3 4 3 4 1 2 1 1 4 3 4 1 1 2 1 3 4 1 1 4 1 2 1 1 4 3 4 3 4 3 4 1 3 4 1 3 4 Notes All dimensions are in inches All dimensions are 1 4 Wiring from electrical entry point to control enclosure is furnished and installed by others in field Risers available from 3 4 to 2 1 2 dia...

Page 9: ...t notice Dimensional data Grille size A B C D 14 x 16 17 11 16 15 11 16 15 11 16 13 11 16 12 x 14 15 11 16 13 11 16 13 11 16 11 11 16 7 x 16 17 11 16 15 11 16 8 11 16 6 11 16 6 x 14 15 11 16 13 11 16 7 11 16 5 11 16 Supply grille arrangements Unit size Height x width Single supply Double supply 03 6 x 14 6 x 14 04 6 x 14 6 x 14 06 12 x 14 6 x 14 08 14 x 16 7 x 16 10 14 x 16 14 x 16 12 14 x 16 14 x...

Page 10: ...ountersunk screw holes Standard finish is powder coated and will be the same color as the return grille Mounting hardware included All listed dimensions are approximate and are subject to change without notice Dimensional data Grille size A B C D 14 x 16 17 11 16 15 11 16 15 11 16 13 11 16 12 x 14 15 11 16 13 11 16 13 11 16 11 11 16 7 x 16 17 11 16 15 11 16 8 11 16 6 11 16 6 x 14 15 11 16 13 11 16...

Page 11: ... Return air grille Notes Frame and return grilles are shipped loose for field installation Optional grille does not come with a frame Contact the factory regarding extended front panels for additional control panel access and or ADA mounting of thermostats All listed dimensions are approximate and are subject to change without notice Modifications to the product specifications must be accepted by ...

Page 12: ... drilling cutting or working with chemicals Never pressurize equipment beyond specified pressures as shown on unit rating plate Always pressure test with an inert fluid such as water or dry nitrogen to avoid possible damage or injury in the event of a leak or component failure during testing Always protect adjacent flammable material when welding or soldering Use a suitable heat shield material to...

Page 13: ... for personal injury or property damage resulting from improper or unsafe practices during the handling installation service or operation of the equipment The installation of fan coils and all associated components parts and accessories shall be in accordance with the regulations of all authorities having jurisdiction and must conform to all applicable codes It is the responsibility of the install...

Page 14: ...the customer to provide the protection necessary to prevent vandalism and weather deterioration of the equipment Under no condition should the units be left unprotected from the elements The equipment is NOT suitable for outdoor installations Once the equipment is properly positioned on the job site cover the unit openings with either a shipping carton vinyl film or an equivalent protective coveri...

Page 15: ... As the unit is righted align the risers with the unit below In the case of shipped loose risers install from the lowest floor to the highest floor After the risers are field tested for leaks the Fan Coils can then be installed in any order Risers are supported anchored and isolated in the field by others Field furnished isolator pads if required should be positioned beneath the unit at this time ...

Page 16: ... inside the unit so condensate if formed will run back into the condensate pan and not out toward the riser Any water damage caused by not following this procedure is not covered under the warranty Make sure that the drain pan cover is in place prior to start up Failure to have this properly installed may prevent condensate drainage resulting in property damage Any water damage caused by not follo...

Page 17: ...llowing this procedure is not covered under the warranty The riser connection joints should be hydrostatically tested for leaks before furring in the unit Pressure of water column alone is approximately 0 43 psi per foot i e 43 psi for each 100 feet DO NOT EXCEED 250 PSI or that which the supplied components were designed To assure compliance with existing building codes the installing contractor ...

Page 18: ...rtment Such recommendations will be made by the factory upon request All ductwork and or supply and return grilles should be installed in accordance with the project plans and specifications If not included on the unit or furnished from the factory supply and return grilles should be provided as recommended in the product catalog All units must be installed in non combustible and non hazardous are...

Page 19: ...RED FACTORY WIRED 18AWG FACTORY WIRED 12AWG Wiring diagram 120V Standard blower motor wiring chart Size High Medium Low Capacitor Capacitor size 03 Red Blue Black Gray Yel 5μF 04 Blue Black Brown Gray Yel 5μF 06 Red Blue Black Gray Yel 10μF 08 Blue Black Brown Gray Yel 20μF 10 Red Blue Black Gray Yel 20μF 12 Red Blue Black Gray Yel 20μF High static blower motor wiring chart Size High Medium Low Ca...

Page 20: ...ature sensor is used wire to thermostat tb1 terminals 1 and 2 High static blower motor wiring chart Size High Medium Low Capacitor Capacitor size 03 Blue Black Brown Gray Yel 1 5μF 04 Red Blue Black Gray Yel 1 5μF 06 Red Blue Black Gray Yel 5μF 08 Blue Black Brown Gray Yel 8μF 10 Red Blue Black Gray Yel 8μF 12 Red Blue Black Gray Yel 8μF 18 CAUTION Not following proper wiring procedure can cause i...

Page 21: ...ctrical Code and any applicable local codes Branch circuit fusing and electrical disconnect means if required must be furnished and installed by others All unit mounted control components and electrical heater elements when furnished are factory wired to the unit junction control box located in the center of the unit Remote mounted control components are shipped loose for field installation and wi...

Page 22: ...l When cutting out supply and return holes for grilles be sure to clean all drywall dust from coils drain pans and blower discharge plenum After drywall is in place and rooms are prepared for final wall treatment the supply and return air openings and control component opening should be securely covered to prevent introduction of foreign material If the wall texture and or color are to be sprayed ...

Page 23: ...el and stud mounting lines Install drywall to sides of unit with optional cut outs for supply outside air and thermostat Install drywall to face of unit with optional cut outs for supply return and thermostat Install studs from top of unit to ceiling 4 corners Install drywall to walls B A E F C D Wall studs See detail Space as needed 1 2 typ The installation instructions included in this manual ar...

Page 24: ...facturer s warranty Start up Before beginning any start up the start up personnel should take the time to familiarize themselves with the unit options accessories and control sequence to fully understand how the unit should operate properly under normal conditions All personnel should have a good working knowledge of general start up procedures All internal doors and walls should be in place In so...

Page 25: ... not release air trapped in other parts of the system Inspect the entire system for potential air traps and independently vent those areas as required In addition some systems may require repeated venting over time to fully eliminate air in the system Water treatment Proper water treatment is a specialized industry and therefore it is recommended to consult an expert in this field to analyze the w...

Page 26: ... Before and during water system balancing conditions may exist due to incorrect system pressures which may result in noticeable water noise or undesired valve operation After the entire system is balanced these conditions will not exist on properly designed systems If any of these conditions persist recheck the system for air that may not have been properly vented during start up Air system balanc...

Page 27: ...otentiometers marked as FL01 FL02 FL03 to adjust the airflow associated with each input Each output can be adjusted from 0 to 100 of the motor s factory programmed operating range using an instrument screwdriver Insert the screwdriver into the white center of the potentiometer and turn clockwise for an increase in airflow or counterclockwise for a decrease in airflow 0 10 VDC control card The 0 10...

Page 28: ...ll result in rapid corrosion of the metals Strong alkali base cleaners pH of 11 or more containing sodium potassium or ammonium hydroxide are not recommended as they will aggressively corrode aluminum tubes and fins Strong ammonium hydroxide cleaners will also cause stress corrosion cracking of copper tubes Zehnder Rittling recommends completely rinsing all cleaners from the coil including cleaner...

Page 29: ...element will also cause unwanted odors in the air conditioned space as the foreign material is burned off Electrical wiring controls The electrical operation of each unit is determined by the components and wiring of the unit This may vary from unit to unit Refer to the wiring diagram located in a zip lock plastic bag on the air block off plate of each unit for the actual type and number of contro...

Page 30: ... to allow proper flow of condensate Failure to strictly follow this instruction will void the manufacturer s warranty and the manufacturer will not be responsible for any consequential damages due to water Periodic checks of the drain should be made during the cooling season to maintain a free flowing condensate Should the growth of algae and or bacteria be a concern consult an air conditioning an...

Page 31: ... activated drain pan clogged Remove debris from drain pan unclog pan unclog drain and emtpy Unit blows fuse when power is applied to unit Defective or improperly wired component Using a battery powered continuity tester check for shorted or grounded components starting at incoming power Note position of all controls during various component checks Caution some voltages have isolated common which m...

Page 32: ...n operates but air delivery is low Incorrect fan speed has been selected Re select proper fan speed as required Dirty air filter Replace air filter Dirty coil Clean coil Obstruction in ductwork Check for improperly positioned balancing or fire dampers Check for fallen duct liner Repair as required Check that supply grilles are open Actual E S P higher than design Check installation for proper supp...

Page 33: ... limit trips again check for the following conditions improper voltage to heating element obstructed fan or unit outlet reducing air flow over heating element dirty or defective heating element causing hot spot If heater does not operate after sufficient time for limit switch to cool disconnect power and check continuity across primary high limit switch Replace if defective Tripped secondary high ...

Page 34: ... grilles as required n n Flexible duct connections at unit n n Proper supply and return grille type and size n n Control outside air for freeze protection n n Insulate all ductwork as required Electrical connections n n Refer to unit wiring diagram n n Connect incoming power service or services n n Install and connect shipped loose components Unit start up n n General visual inspection and system ...

Page 35: ...t of written consent from Zehnder Rittling the purchaser shall return the defective good s to the factory for inspection with freight prepaid If inspection shows the goods to be defective Zehnder Rittling will at its discretion repair or replace the said item s Defects arising from damage due to shipment improper installation negligence or misuse by others are not covered by this warranty This war...

Page 36: ...ttling 100 Rittling Boulevard Buffalo NY USA 14220 T 844 934 6337 844 ZEHNDER F 716 827 6523 sales zehnder rittling com www zehnder rittling com Zehnder Rittling May 2015 English subject to change without notice ...

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