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18

ENG

MC DUCT +03U400025 - rel. 4 - 20201201

PC-301 Air Proving Switch

Mounting the PC-301 air flow switch:

Mount the airflow switch in the supply or return duct using the
screws supplied. Mount the device so that the diaphragm is in a
vertical position as shown at right.
If the airflow switch is to be mounted on the return duct
(vacuum), then mount it in a vertical position by the small plate.
Drill a 7/16” hole in the side of the duct and connect the supplied
tubing to the low pressure tap on the airflow switch and then
run it through the drilled hole in the duct. Put no more than 2” of
tubing into the duct. Caulk around the tubing where it enters the
duct. The high pressure tap is left open to atmosphere.

If the airflow switch is to be mounted to the supply duct
(pressure), then drill a 7/16 hole in the side of the duct, apply
caulking to the large plate, and mount the device with the large
plate to the duct and the high pressure tap/tubing mated to the
hole. The low pressure tap is left open to atmosphere.

Mounting Diagram

Maximum Electrical Switch Ratings

Vac

Full Load

Amps

Locked Rotor

Amps

Pilot Duty

(VA)

Non-Inductive

Amps

24V

-

-

60

10

120V

6.25

37.5

300

10

240V

3.1

18.6

300

10

277V

2.7

16.2

300

10

Wiring Diagram

NOTE:

There is an adjustment screw located under the metal

cover. This must be adjusted to insure that the air flow switch
turns on during air flow and off when air flow ceases.

«
...
16
17
18
19
20
...
»

Содержание MC

Страница 1: ...C o n n e c t e d S o l u t i o n s MC NO POWER SIGNAL CABLES TOGETHER READ CAREFULLY IN THE TEXT Duct Air Handler Atomizing Humidification System Modulating User manual ...

Страница 2: ......

Страница 3: ... the product near objects that can be damaged by contact with water or condensate CAREL denies all responsibility for direct or indirect damage as a result of loss of water from the humidifier Do not use corrosive chemicals aggressive solvents or detergents to clean the internal or external parts of the humidifier unless specifically indicated in the user s manual CAREL adopts a continuous develop...

Страница 4: ......

Страница 5: ...s 2 years from date of manufacture whichever comes first so long as the product has been installed and operated in accordance with all appropriate manuals and wiring diagrams and started up by a qualified Carel USA technician Any product or part that is found to be defective will at the option of Carel USA LLC be replaced or repaired Carel USA LLC reserves the right to inspect any part or installa...

Страница 6: ......

Страница 7: ...esign with extremely low maintenance The MC atomizing head uses what is called Supersonic Vacuum Implosion technology This technology produces small droplets using minimal compressed air with relatively low pressures 30 psi air 5 psi water Air and water regulators and solenoid valves in the control cabinet control the pressures and flow to the nozzles On a call for humidity the air valve is opened...

Страница 8: ...mizing heads to avoid direct discharge onto obstructions As a rule of thumb the atomizing heads discharge a plume of mist up to 15 feet long and to 4 feet in diameter Anything in this plume has the potential to get wet 6 Position the heads to allow access for maintenance Position over aisles or along walls where access is easy rather than over equipment and racks 7 For optimal performance the cont...

Страница 9: ... contained in the atomized mist at various levels of modulation Accordingly the evaporation distance reduces as the heads modulate down The basic rules of atomizing head positioning are Discharge perpendicular to the air stream when the air handler or duct height will allow Discharge perpendicular to or in the direction of the air flow never against it In VAV systems angle the heads toward the top...

Страница 10: ...cooling coil as possible and angled to discharge toward the top edge of the cooling coil This angled discharge also allows for VAV operation when air flow may reduce In typical duct applications the manifold is arranged in the middle of the duct with the heads discharging in the direction of air flow Duct size must be a minimum of 18 high and wide enough to allow 2 between heads minimum and 9 at e...

Страница 11: ...d after the cooling coil if a mist eliminator is used Likewise in a duct system that does not have enough straight duct run for evaporation a mist eliminator can be employed However there are rules for mist eliminator use Face velocity through the eliminator must not exceed 750 fpm Air flow through the eliminator must be laminar ...

Страница 12: ...an expanded transitional section may be used to reduce duct velocity to an acceptable level less than 750 fpm In very large systems multiple manifolds may be used to meet capacity The following sketch is a typical layout but in these cases Carel USA should work up the final layout ...

Страница 13: ...ression to threaded fittings and at the other end they are to be terminated with compression plugs and a gauge assembly on the air line In systems over 250 lbs hr capacity the manifold is fed to the center and terminated on both ends one end with an air gauge assembly The atomizing manifold s should be mounted in the air handler or duct per the instructions in Step 2 or per installation drawings p...

Страница 14: ... uni strut not supplied so that the manifold is held level with the atomizing heads discharging as per Step 2 or the installation drawings and without sagging If manifolds are longer than 8 feet they will be in two or more pieces Use the compression unions supplied to join them together as shown at right ...

Страница 15: ... water ball valves shown at right are supplied loose with the cabinet Solder a piece of 1 2 copper tube no longer then 2 to the 1 2 ball valve supplied Slip tube in top hole and 5 8 compression fitting then tighten Cement a piece of 1 2 schedule 80 PVC pipe no longer then 2 to the 1 2 union PVC ball valve supplied Slip pipe in bottom hole and cement to the union fitting in cabinet On the inlet sid...

Страница 16: ...ervice The terminals have knife blade disconnects The power transformer has an internal circuit breaker A B C A Power Transformer B Power terminals with knife switches C Control wiring terminals Step 7 Mount and wire sensors and safeties The control humidity sensor is located in the return plenum or in the room The hi limit humidity sensor is located downstream of the atomizing heads after the coo...

Страница 17: ...INAL 4 STAGE 2 SECONDARY CABINET Y 0 10 Vdc TO TERMINAL 3 STAGE 2 SECONDARY CABINET SUPPLY AIR OUT H ASDH100000 HIGH LIMIT HUMIDITY SENSOR 24 Vac AIRFLOW SWITCH NC NC Terminal 29 32 are connected to a SPDT relay Terminals 30 and 32 are the common of the relays Compressor water treatment enable is a SPST relay Water treatment and compressor failure alarms need to come from a dry contact 24 Vac prov...

Страница 18: ... the duct Caulk around the tubing where it enters the duct The high pressure tap is left open to atmosphere If the airflow switch is to be mounted to the supply duct pressure then drill a 7 16 hole in the side of the duct apply caulking to the large plate and mount the device with the large plate to the duct and the high pressure tap tubing mated to the hole The low pressure tap is left open to at...

Страница 19: ...SDOMH00 1 Temperature Humidity NTC temp 0 1 VDC or 4 20 mADC humidity DPWC111000 Wall Temp hum sensor replaces SWNTCTH0 1 STHONTC0 1 and ASWC111000 DPWC110000 Wall Temp hum sensor replaces STHOAP AND ASWC110000 Temperature Humidity 0 1 VDC or 4 20 mADC temp humidity DPDC111000 Duct temp hum sensor replaces SDNTCTH0 1 AND ASDC111000 DPDC110000 Duct temp hum sensor replaces SSDOMHT0 1 AND ASDC110000...

Страница 20: ...pply air sensor In effect this is a low signal selector routine 5 On reaching either set point the atomizing heads should be turned off by giving the MC system the lowest control signal 6 In addition to the humidity sensors there should also be temperature sensors located downstream of the preheat coil and downstream of the humidifier mist eliminators The software should permit a preheat temperatu...

Страница 21: ...has a minimum of an aftercooler moisture separator and trap and a 0 1 micron coalescing filter Oil in the heads will degrade performance and drastically increase maintenance Check compressor size should be sized to deliver 0 15 CFM per lbs hr of capacity 6 Drain from cabinet is connected to an open drain and looped to height of nozzles or no more than 6 below supporting water line 7 All air and wa...

Страница 22: ...n Adjust air pressure to 30 psi and water pressure to 5 psi to the manifold Place a cloth over the open ends of both the air and water lines to catch any flying debris Slowly open the air and water ball valves and bleed the lines until all dirt has been removed from both lines and all air is out of the water lines Shut off the system at the cabinet Open all valves at the heads With the system OFF ...

Страница 23: ... field is increased The longer the button is held the faster the value increases DOWN Cycles downward through the screens when cursor is in top left corner When cursor is in a field the value of the field is decreased The longer the button is held the faster the value decreases ENTER Cycles through fields in a screen When in a field pressing ENTER confirms the current value into the field and goes...

Страница 24: ...nput demand and other available sensors are displayed in this screen if they are connected All functions are then accessed through the Technician s Menu which is accessed by pressing the PROGRAM button which displays the Technician s Menu with rolling choices Technician Menu TECHNICIANS MENU SYSTEM STATUS user settings current alarms run hours service settings factory settings date time manual con...

Страница 25: ...point at which the atomizing stages come on and off within the proportional band may be changed For this example stage 1 will activate at 10 of the proportional band or about 49 RH shutting off at 50 RH Stage 2 would activate at 46 5 RH and shut off at 47 5 RH 4 Stages 3 and 4 on and off points may be changed 5 This screen displays only if the outside air reset temperature sensor is installed and ...

Страница 26: ...n or replace Check controller input replace controller if bad 6 On loss of air flow system shuts down System will restart when air flow is restored Check air flow switch adjust Check wiring switch should open on air flow loss Check digital input on controller replace controller if bad 7 Compressor has failed System will not operate Consult compressor manuals and contact compressor technical suppor...

Страница 27: ... 11 Supply air humidity has exceeded the high limit alarm set point System should be off Make sure alarm set point is higher than the supply set point Check sensor calibration Set alarm set point higher if too low 12 Supply air humidity is below the low supply air humidity alarm set point If initial startup wait Check if system is operating correctly Check sensor calibration 13 Check sensor calibr...

Страница 28: ...aintenance alarm run hours Perform maintenance Reset maintenance alarm 19 End of the alarm screen loop Pressing ENTER will clear and reset the alarms Alarms still present will then repeat 3 6 Run Hours 1 Stagerunhoursareshown aswellasthemaintenance alarm set point and the time to the next alarm Pressing ALARM ESC at the same time will reset the Stage Run Hours Pressing ESC PRG while the Alarm Set ...

Страница 29: ...g ALARM ESC at the same time will reset the Stage Run Hours Pressing ESC PRG while the Alarm Set is selected will reset the Next Alarm remaining time 3 7 Service Setting Initial password is 0001 1 For each sensor connected set ENABLE to Yes to enable the alarm and enter alarm delay time 2 For each sensor connected set ENABLE to Yes to enable the alarm and enter alarm delay time 3 For each sensor c...

Страница 30: ...t Calibrate by entering a or value to the Offset This is then added to the Actual value to provide the displayed value which is also used for control 10 Sensor Calibration The Actual reading is the raw sensor input Calibrate by entering a or value to the Offset This is then added to the Actual value to provide the displayed value which is also used for control 11 Sensor Calibration The Actual read...

Страница 31: ...emineralized water and may be disabled 3 8 Factory Settings Initial password is 9999 1 If a sensor is wired into the system enable it by setting it to YES 2 If a sensor is wired into the system enable it by setting it to YES 3 Enter the number of humidification stages 4 Enter the type of signal from the sensor 0 10Vdc 0 1Vdc 4 20mA Enter the sensor s scale over the input range 5 Enter the type of ...

Страница 32: ...put configuration Displays Current status of relay Set Action of relay on alarm N O means relay is normally open and closes on alarm 11 Set digital input configuration Displays Current status of relay Set Action of relay on alarm N O means relay is normally open and closes on alarm 12 Set digital input configuration Displays Current status of relay Set Action of relay on alarm N O means relay is n...

Страница 33: ...caled valves if required 16 Set modulating configuration of stage modulating air valve This is used to allow different scaled valves if required 17 Set modulating configuration of stage modulating air valve This is used to allow different scaled valves if required 18 Service and factory passwords can be changed here NOTE If you forget the factory password you must call the factory 19 Set temperatu...

Страница 34: ...ault screen Choices are Room Main Room Main Mod Duct Main DDC Signal DDC w High Limit The number of stages is the number of secondary cabinets 3 10 Date Time Setting User can change date and time in this screen by changing field values DST enables or disables daylight saving time 3 11 Manual Control Initial Password is 9999 Entering a value in OUTPUT LEVEL will cause the system to modulate to that...

Страница 35: ...going call based on Alarms If ALARM DIAL OUT is Enabled the TOTAL phone NUMBERS and next two screens will appear TOTAL NUMBERS is the amount of phone numbers present in the ADDRESS BOOK see MODEM_5 below 4 MODEM_3 is where the multiple phone number configurations are stored If the pCO5 attempts to dial out and does not get through it will wait DELAY_ TIME seconds and dial the next phone number in ...

Страница 36: ... steps when performing total cleaning and regreasing of the nozzles Before disassembling the nozzles mark the back adjustment screw or count the number of turns while removing it This will insure proper calibration when reassembling the nozzles After disassembling clean nozzle parts using any standard humidifier cleaner or 5 phosphoric acid Replace O rings if they appear cracked or worn Lubricate ...

Страница 37: ...e head Return the adjusting screw to the marked position C3 Dirt or debris in the air orifice small in quantity and loose S3 Remove the air cap and inspect the underside of the cap for dirt or debris Inspect the area around the tip of the water nozzle for dirt or debris Wipe it away any dirt and reassemble the head Most likely the debris is from constructing the air lines C4 Dirt or debris in the ...

Страница 38: ... settings of 30psi air and 5psi water at the end of the manifolds Now adjust the water pressure regulator up down until an acceptable output is observed Warning Increasing the water pressure to gain more output may actually result in less evaporation due to the larger droplet sizes created You must confirm the proper pressure settings before calling to discuss performance issues 5 The top of the A...

Страница 39: ... and seals for tears or breaks Replace if needed C3 Solenoid valves not operating properly S3 Clean or replace solenoid valve as required 9 Water pressure rises and or is uncontrollable C1 Loose air caps S1 Check the atomizing heads for loose air caps A loose air cap can cause air to bleed into the water line and falsely pressurize it C2 O Rings or seals worn torn or broken S2 Check O Rings and se...

Страница 40: ... is in the on position C2 No demand S2 Check the displayed value versus the set point Is there a demand for humidification The system will only come on if there is a demand C3 Parameters are incorrect S3 Check the program parameters of the controller Refer to the lower right hand corner of the wiring diagram supplied with the cabinet for the factory recommended settings ...

Страница 41: ...p specify size 6 A 9 B 12 C 15 D lb hr 1 per head MCKPIS1000 Piston with cleaning needle O ring and seat 1 per head C MCNP5 Adjusting screw 1 per head 131363 AXX Piston spring specify head sizer 6 0 9 12 1 15 2 1 per head 1108315AXX Pipe bolt clamp 4 head MCNCLAMP Pipe clamp 2 head MCNPLATE Slide bolt plate 2 head MCNVALVC Slide valve stem MCNVALVE Slide valve slide MCKHA 000 Complete head and fit...

Страница 42: ...COMPB1 2MPTX5 8 2 10 599 02006C 1 6 CV 1 5 MCTEERB1 2X1 4FPT 2 11 MCCSGAG100 1 6 MCN1PB1 2XC 1 12 MCNIPB1 2X31 2 1 Water Control Sections 2 1 3 8 10 9 3 11 11 8 9 0 100 PSI GAUGE INSTALLED ON TEE AND ROTATED TO FACE VIEWER 0 30 PSI GAUGE INSTALLED ON TEE AND ROTATED TO FACE VIEWER 12 9 9 10 9 8 3 7 NO DRAIN SOLENOID FLOW 6 NC WATER SOLENOID 5 WATER REGULATOR 4 VALVE NOT SHOWN 11 Ref Part Number Qu...

Страница 43: ...e MCSOLB1 2NC 1 2 NC brass solenoid valve air or water Voltage SQS65 5U Obsolete see part number DSA004E001 DSA004E001 Modulating air valve motor 2001 599 02006C Modulating air valve body 0 100 lb hr 599 02010C Modulating air valve body 100 500 lb hr MCAIRSEC Complete 1 2 air control section for ON OFF systems MCAIRMS Complete 1 2 air control section with modulating valve 0 100 lb hr Ser 2300 MCAI...

Страница 44: ...44 ENG MC DUCT 03U400025 rel 4 20201201 8 WIRING DIAGRAMS 8 1 Duct Main DDC for reference only refer to wiring diagram in control cabinet ...

Страница 45: ...nal CONTROL CABINETS Power 110 1 60 Vac 75 VA Control circuit 24 VAC from 75 VA transformer Materials 16 ga Powder coated steel Rating NEMA 1 NEMA 4 and NEMA 4X available Min inlet air pressure 100 psi Max inlet air pressure 150 psi Min inlet water pressure 20 psi Max inlet water pressure 125 psi Air consumption 100 lbs hr cabinet 15 CFM 500 lbs hr cabinet 75 CFM Water consumption 100 lbs hr cabin...

Страница 46: ...46 ENG MC DUCT 03U400025 rel 4 20201201 ...

Страница 47: ......

Страница 48: ...CAREL INDUSTRIES HQs Via dell Industria 11 35020 Brugine Padova Italy Tel 39 0499 716611 Fax 39 0499 716600 carel carel com www carel com Agenzia MC DUCT 03U400025 rel 4 20201201 ...

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