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Unpacking and preparation

All units are carefully inspected 
at the factory throughout the 
entire fabrication and assembly 
processes under Zehnder 
Rittling’s stringent quality 
assurance program. All major 
components and subassemblies 
such as motors, blowers, 
coil, controls, valve package 
and paint quality are carefully 
tested for proper operation, 
visually inspected and verified 
for full compliance with factory 
standards. Operational testing 
for some customer furnished 
components such as pneumatic 
valves and DDC controllers may 
be a possible exception.

Cabinet Unit Heaters are usually 
shipped on pallets of up to 5 
units. Each unit is factory tagged 
according to the customer’s 
purchase order. This allows the 
unit, upon removal from the 
pallet, to be taken directly to its’ 
assigned space for immediate 
installation. Units should not be 
installed at locations other than 
that designated on the tag.

Each unit is carefully packaged 
in a polyethylene plastic bag 
for surface protection, placed 
in a cardboard container and 
filled with kraft paper padding 
for shipment to avoid damage 
during normal handling in the 
shipment process. It is the sole 
responsibility of 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. If the equipment is 
not needed immediately at the 
job site, it should be left in its 
shipping carton and stored in 

if foreign material is allowed to 
be deposited on the motor or 
blower wheels of any unit. Some 
job conditions may require some 
form of temporary unit covering 
during construction.

DO NOT store or install units 
in corrosive environments or in 
locations subject to temperature 
or humidity extremes (e.g., 
attics, garages, rooftops, etc.). 
Corrosive conditions and high 
temperature or humidity can 
significantly reduce system 
performance, reliability and 
overall service life.

a clean, dry area of the building or 
in a warehouse. Do not remove any 
equipment from its shipping package 
until it is needed for installation. 
The equipment is NOT suitable for 
outdoor installations.

After determining the condition of 
the cardboard container exterior, 
carefully remove each unit from the 
container and inspect for hidden 
damage. At this time, check that all 
shipped loose items such as wall 
mounted thermostats, aquastats, 
remote temperature sensors, valve 
package, etc., are accounted for and 
placed in a safe area. Any hidden 
damage should be recorded and 
immediately reported to the carrier 
and a claim should be filed. In the 
event a claim for shipping damage is 
filed, the unit, cardboard container, 
and all packing must be kept for 
physical inspection by the freight 
carrier.

Once the equipment is properly 
positioned on the job site, cover 
the units with either a shipping 
carton, vinyl film, or an equivalent 
protective covering. Cap open ends 
of piping that is stored on a job site. 
Take special care to prevent foreign 
materials from entering the units in 
areas where painting, dry walling, 
or spraying of fireproof material, 
etc., has not yet been completed 
as these materials may accumulate 
on the motors and blower wheels. 
Foreign material that accumulates 
within the units can prevent proper 
start-up, necessitate costly clean-up 
operations, or result in immediate 
or premature component failure. 
Before installing any of the system 
components, be sure to examine 
each pipe, fitting and valve, and 
remove any dirt or foreign material 
found in or on these components. All 
manufacturer’s warranties are void 

13

Unpacking and preparation

Summary of Contents for RC-360

Page 1: ...i Cooling Fresh Air Clean Air Heating Rittling Cabinet Unit Heater Installation Operation and Maintenance ...

Page 2: ...ng 11 Safety considerations 12 Unpacking and preparation 13 Handling and installation 14 Hot water connections 15 Ductwork connections 16 Electrical connections 17 Wiring diagram 18 Start up 20 Air system balancing 21 Heating system 21 Water system balancing 22 Water treatment 22 Controls operation 23 Exposed unit touch up 23 Normal operation maintenance 24 Replacement parts 26 Equipment start up ...

Page 3: ... 300 RW Wall RW 260 shown RW 270 and RW 280 available RWI Wall inverted flow RWI 290 shown RWI 300 and RWI 310 available RRW Wall partially recessed RRW 320 shown RRWI Wall partially recessed inverted flow RRWI 330 shown RFRW Wall fully recessed RFRW 340 shown RFRWI Wall fully recessed inverted flow RFRWI 350 shown Models and arrangements 1 ...

Page 4: ...FI 240 RS 200 RSI 240 RF 220 RFI 250 RF Floor RF 200 shown RF 220 available RC Ceiling RC 360 shown RC 370 RC 380 RC 390 and RC 400 available RFI Floor inverted flow RFI 240 shown RFI 250 available RS Floor sloped RS 200 shown RRC Ceiling partially recessed RRC 440 shown RFRC Ceiling fully recessed RS 200 shown RSI Floor sloped inverted flow RSI 240 shown 2 ...

Page 5: ...2 Cu Blower Quantity 1 1 2 2 1 2 4 4 Diameter 5 7 5 7 5 7 5 7 5 7 5 7 5 7 Width 7 5 10 4 7 5 10 4 7 5 10 4 7 5 10 4 Filter Number 1 1 1 1 1 1 1 Length in 22 28 34 46 52 60 70 Width in 9 75 9 75 9 75 9 75 9 75 9 75 9 75 Thickness in 1 1 1 1 1 1 1 Cabinet size Height in 26 5 26 5 26 5 26 5 26 5 26 5 26 5 Length in 38 2 44 2 50 2 62 2 68 2 76 2 86 2 Width in 10 10 10 10 10 10 10 Shipping weight lbs 8...

Page 6: ...40 Power input Watts 100 110 130 180 325 368 368 Voltage Volts 120 120 120 120 120 120 120 Hz 60 60 60 60 60 60 60 Phase 1 1 1 1 1 1 1 Table B Electrical ratings Notes Maximum circuit ampacity MCA 1 25 x FLA motor 1 FLA motor 2 FLA electric heat Maximum overcurrent protection MOP 2 25 x FLA motor 1 FLA motor 2 FLA electric heat If the calculated MOP is within 10 of the next smaller available fuse ...

Page 7: ... 2 3 1 2 5 1 4 4 1 2 8 1 8 RF 200 shown Dimensional data Unit size A B C D 02 38 3 16 22 3 16 24 20 03 44 3 16 28 3 16 30 26 04 50 3 16 34 3 16 36 32 06 62 3 16 46 3 16 48 44 08 68 3 16 52 3 16 54 50 10 76 3 16 60 3 16 62 58 12 86 3 16 70 3 16 72 68 Notes 1 and 2 row coil supply and return 1 2 nominal 5 8 OD all sizes Inlet grille optional Unit shown with left hand piping connections and right han...

Page 8: ...S 200 shown Dimensions and data Models RS and RSI Dimensional data Unit size A B C D 02 38 3 16 22 3 16 24 20 03 44 3 16 28 3 16 30 26 04 50 3 16 34 3 16 36 32 06 62 3 16 46 3 16 48 44 08 68 3 16 52 3 16 54 50 10 76 3 16 60 3 16 62 58 12 86 3 16 70 3 16 72 68 Notes 1 and 2 row coil supply and return 1 2 nominal 5 8 OD all sizes Inlet grille optional Unit shown with left hand piping connections and...

Page 9: ...urn and 1 row steam supply 1 row hot water suppy and 1 row steam return 2 row hot water return 2 row hot water supply 2 row hot water return 7 3 8 8 1 8 2 row hot water supply 7 1 4 4 1 2 24 24 18 1 4 16 1 2 15 3 4 13 1 2 1 row hot water supply and 1 row steam return Filter position 10 3 8 2 5 1 4 7 1 4 2 5 1 4 4 1 2 5 5 8 Dimensions and data Notes 1 and 2 row coil supply and return 1 2 nominal 5 ...

Page 10: ...nd 2 row coil supply and return 1 2 nominal 5 8 OD all sizes Unit shown with left hand piping connections and right hand electrical connections as standard Right hand piping connections with left hand electrical connections available as an option Piping hand determined when facing the air outlet All listed dimensions are approximate and are subject to change without notice Modifications to the pro...

Page 11: ...03 44 3 16 28 3 8 30 18 5 8 04 50 3 16 34 3 8 36 23 5 8 06 62 3 16 46 3 8 48 23 5 8 08 68 3 16 52 3 8 54 33 5 8 10 76 3 16 60 3 8 62 33 5 8 12 86 3 16 70 3 8 72 33 5 8 Notes Damper motor always on right side when viewing unit from front side All listed dimensions are approximate and are subject to change without notice Modifications to the product specifications must be accepted by Zehnder Rittlin...

Page 12: ...louvered inlet grille with internal bug screen 3 1 2 A Front View Weep holes 2 5 8 4 to 8 1 2 2 13 16 Side View Dimensions and data Outside air wall box Dimensional data Model A Rough opening WB 0203 24 22 1 2 x 3 WB 0406 29 27 1 2 x 3 WB 081012 39 37 1 2 x 3 10 ...

Page 13: ...d damage not discovered during unloading must be reported to the shipping company within 15 days of receipt of the shipment All units are shipped F O B factory Therefore Zehnder Rittling is not responsible for damage during transit It is the responsibility of the installing contractor to inspect and verify that the units shipped were in fact the correct model number voltage etc Any discrepancies s...

Page 14: ...ays 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 contain sparks or drops of solder Have a fire extinguisher readily available Please follow standard safe practices regarding the h...

Page 15: ...ive environments or in locations subject to temperature or humidity extremes e g attics garages rooftops etc Corrosive conditions and high temperature or humidity can significantly reduce system performance reliability and overall service life a clean dry area of the building or in a warehouse Do not remove any equipment from its shipping package until it is needed for installation The equipment i...

Page 16: ...kets where hanging rod and rubber in shear or spring vibration isolators supplied by others can be used for proper suspension and vibration isolation The type of mounting device is a matter of choice however the mounting point should always be that provided in the chassis or cabinet Improper mounting could result in the unit falling from its position causing personal injury or even death After mou...

Page 17: ...using a leak Secure the union nut hand tight and then tighten no more than an additional 1 4 turn The inlet supply connection is marked at the appropriate coil stub out with the other coil stub out being the outlet return connection After the connections are completed the system should be tested for leaks Since some components are not designed to hold pressure with a gas hydronic systems should be...

Page 18: ...ovided with outside air should have some form of low temperature protection to prevent coil s from freezing This protection may be a low temperature thermostat to close the outside air damper a preheat coil to temper the outside air before it reaches the unit or any other protective method It should be noted that none of these methods will adequately protect a coil in the event of power failure Th...

Page 19: ...agram Failure to do so could result in personal injury or damage to components and will void the manufacturer warranty All wiring connections should be checked prior to start up to ensure connections have not come loose during shipment or installation minimizing problems during start up The fan motor s should never be controlled by any wiring or device other than the factory supplied switch or the...

Page 20: ...ELLOW WHITE YELLOW RED RED BLACK BLACK B R YEL WALL THERMOSTAT OPTIONAL RETURN AIR FAN CONTROL OPTIONAL AQUASTAT FAN CONTROL OPTIONAL R B WHITE BLACK GREEN WALL PLUG OPTIONAL DISCONNECT SWITCH OPTIONAL FREEZESTAT OPTIONAL M2 L2 YELLOW SEE CHART SEE CHART SEE CHART PSC MOTOR OPTION NOTE FOR HIGH STATIC MOTORS USE THE FOLLOWING 3 SPEED SWITCH WIRING CONFIGURATION RED LOW BLUE MED BLACK HIGH YELLOW W...

Page 21: ...L M BLOWER MOTOR MOTOR QUICK CONNECT OPTIONAL HEATER L1 T1 L2 T2 MANUAL MOTOR STARTER OPTIONAL TRANSFORMER L2 M2 FREEZESTAT OPTIONAL BLACK BLACK BLACK WHITE SEE CHART SEE CHART SEE CHART PSC MOTOR OPTION NOTE FOR HIGH STATIC MOTORS USE THE FOLLOWING 3 SPEED SWITCH WIRING CONFIGURATION RED LOW BLUE MED BLACK HIGH YELLOW COMPLETE THE WIRING IN ACCORDANCE WITH NATIONAL AND LOCAL CODES WIRING DIAGRAM ...

Page 22: ...lancing The initial step is to visually inspect all of the equipment plenums connecting ductwork and piping Ensure that all systems are properly installed and supported and that all construction debris or foreign objects have been removed from the equipment Each unit should be checked for Free blower wheel operation Loose wires Loose or missing access panels or doors Filter installed clean and of ...

Page 23: ... some systems may require repeated venting over time to fully eliminate air in the system Prior to the water system start up and balancing the hot water system should be thoroughly flushed to clean out dirt and debris which may have accumulated in the piping during construction During this procedure all unit service valves must be in the closed position This will prevent any foreign material from ...

Page 24: ...expert The system must be complete and all components must be in operating condition before beginning the water system balancing procedures Each hydronic system has different operating conditions depending on the devices and controls installed for the particular application The actual balancing technique may vary from one system to another After the proper system operation is established the appro...

Page 25: ...op coats involving an exothermic chemical process between two components such as epoxies and urethanes should be avoided All standard colors including primer can be painted over If the installing contractor chooses not to paint over the primer color the factory cannot match primer color on future orders potentially causing color match issues in the field Factory touch up spray paint may require a ...

Page 26: ...d increased power consumption Clean the coil at every inspection Units provided with the proper type of air filters replaced regularly will require less frequent coil cleaning Normal operation and periodic maintenance General Each unit on a project will have its own unique operating environment and conditions which dictate a maintenance schedule for that unit that may be different from other equip...

Page 27: ...ed in the unit instead of being disposed of when dirty The cleanable filters may be washed in hot soapy water and then set aside to dry before recharging and reinstalling Before replacing the filter it should be recharged with some type of entrapment film such as Film Car Recharging Oil The filter should be sprayed on both sides or submerged in the film to assure complete coverage The filter shoul...

Page 28: ... undamaged Unit received complete as ordered Unit arrangement and handing is correct Unit structural support is complete and correct Handling and installation Mounting grommets isolators are used Unit mounted level and square Proper access is provided for unit and accessories Proper overcurrent protection is provided Proper service switch disconnect is provided Proper hot water line sizes to unit ...

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Page 32: ...der Rittling 100 Rittling Boulevard Buffalo NY USA 14220 T 716 827 6510 F 716 827 6523 sales zehnder rittling com www zehnder rittling com Zehnder Rittling May 2014 English subject to change without notice ...

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