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Page 17

11.

Installing and Connecting to a Humidistat

11.1

See wiring diagrams in section 19 for proper connection. When using an Acu-Steam electronic

humidistat with outdoor sensor please refer to the instructions included with the humidistat (see page 5,
sections 3.1 through 3.5 explain the functions of the Acu-Steam wall and duct humidistats). If you decide to use
a standard mechanical humidistat by others, connect the mechanical humidistat between the terminals marked
GND (ground) & HSTAT ON/OFF on the humidi

fi

er electronic board.

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Содержание Acu-Steam PRO 12

Страница 1: ...Installation Instructions and Maintenance Manual for Acu Steam PRO Commercial Humidifier by Please read this manual carefully before beginning installation Feb 2020 V1 4 Pro 7 ...

Страница 2: ......

Страница 3: ... may be 32ºF 0ºC or colder Freezing water will damage the humidifier 1 5 Do not install a humidifier if the city water pressure exceeds 90 psi Check the local codes related to pressure reduction 1 6 If the supply duct pressure exceeds 2 0 Water Column 0 5 kPa a drain valve kit optional is required for proper operation 1 7 The installation wiring and plumbing of the humidifier must comply with nati...

Страница 4: ...Page 2 2 Overview and model specifications PRO 23 1 4 13 1 2 20 Ø 3 Ø 1 1 4 13 12 12 5 8 13 1 2 8 6 ...

Страница 5: ...g hr outlet 4 12 5 5 1 5 6 18 8 1 5 8 24 10 9 1 5 10 30 14 1 5 12 36 16 5 1 5 13 5 40 19 1 5 16 Pro12 2 2 6 75 3 1 1 0 Pro7 Pro18 Pro24 Pro30 Pro36 Pro40 Pro50 50 21 8 1 5 Steam Output For other capacities consult factory Available capacities 2 1 External view of the humidifier 14 13 11 5 8 Pro 7 9 ...

Страница 6: ...ng element configuration may be different Heating Element Heating Element Blue Blue Electric Valve G r e e n Red Red Manual Thermal Cut out Y e l l o w W hite Brown Foam High Level Low Level Green Yellow Brown White Red Red Black Black Blue Blue Heating Element Electric Valve Steam Outlet High Level Low Level Foam Manual Thermal Cut out ...

Страница 7: ... 3b for the percentage of relative humidity on the electronic humidistat label The digital readout normally displays the actual humidity and will blink when adjusting the knob to display the setpoint 3 3 If you are using a humidistat by others the humidity adjustment according to the outside temperature might have to be done manually For your information the following table shows the recommended s...

Страница 8: ...FF at the breaker in the main panel or depressing the power button until the green light is fully on will reset the error code 4 2 The Acu Steam PRO humidistat also has two pilot lights to indicate the current status The green light is lit when the humidistat is demanding for humidity thus activating the boiling cycle The red light indicates a warning and reproduces the more serious warning codes ...

Страница 9: ...for proper drain installation Make sure SW shut off valve is open SW valve is responding and SW tube is clear of debris Automatic Reset after 5 min or after switching power off and on 4 Inadequate drainage The tank did not drain or the draining cycle is too long Humidi er immediately suspends the ongoing operation Heating elements and supply valve are switched off The power green light is blinking...

Страница 10: ...l and hardware 1 Inline water filter to be changed yearly NOTE The electronic humidistat and the outdoor reset sensor are optional The humidistat can be either wall type RH or duct type DH Kits and available options excluding Pro7 STM508 High pressure drain valve kit for duct pressure 2 0 water column 0 5 kPa STM504 inline water filter to be changed yearly STM507 replacement water level sensors tu...

Страница 11: ... by first opening the tank cover and unhook it Then unscrew the screws holding the electrical cover and pull it towards you 6 2 Remove the white wire connected on the water pan at the bottom of the unit This is the overflow sensor 6 3 Remove the overflow pan by sliding towards you 6 4 The humidifier must be installed on a vertical flat surface Please see Fig 6 a for necessary clearances around the...

Страница 12: ...o front 6 7 Draw a level horizontal line on the wall and install two screws 8 minimum from center to center of the mounting holes to hook the humidifier on the wall then install two screws at the bottom of the unit and tighten them partially 6 8 Level the unit and tighten the four screws firmly Water Hammer Absorber Min length 30 18 Pro7 Drain kit valve optional required for high pressure installa...

Страница 13: ...trongly recommended to flush the supply water line for 30 seconds before connecting the filter Simply push the tubing plastic or copper into the quick connect fitting until it bottoms out Once the filter is connected it is recommended to flush the supply water through the filter for another 30 seconds before connecting to humidifier We recommend replacing the filter once a year during yearly maint...

Страница 14: ...Acu Steam PRO steam diffuser tubes are insulated 8 1 Proper installation of the diffuser and steam hose is critical for the trouble free operation of the humidifier Please find an accessible location on the duct and make sure you have a minimum length of 60 of straight duct downstream without elbows or other obstructions on which the steam could condensate to allow the steam to disperse easily int...

Страница 15: ...led in a staggered configuration IMPORTANT for Pro 7 For horizontal ducts that are only 8 to 10 inch high install the diffuser at the very bottom of the duct with only the top two screws and rotate approximately 30º away from the airflow to avoid condensation forming at the top of the duct TOP AIRFLOW Diffuser tubes rotate to fine tune steam distribution or TOP TOP AIRFLOW Fig 8c AIRFLOW Fig 8d UP...

Страница 16: ...nd that the hose will soften when heated and will have a tendency to sag NOTE If it is not possible to get enough slope for the condensation to return properly to the water tank then an S shaped steam trap not supplied must be installed at the lowest point of the steam hose This steam trap hose should have a minimum height of 6 4 for Pro7 For supply duct pressure exceeding 2 0 Water Column 0 5 kPa...

Страница 17: ...ic tube is supplied to connect the pressure probe to the PDS 9 3 Drill a hole 3 8 dia in an accessible location in the air duct 9 4 Insert the probe and fasten it s base to the duct using two sheet metal screws The arrow visible on the probe flange indicates the air flow direction in the duct i e the curved end of the probe has to face the air flow Please see Fig 9a and Fig 9b AIR FLOW Fig 9a KT 2...

Страница 18: ...e fan The installer must use this contact to engage a relay that starts the furnace fan motor when required Please refer to the furnace instruction manual to find the right wiring diagram The standard rating of these contacts is 3A 240VAC or 6A 120VAC Please do not exceed these ratings 10 5 The DIP switches located on the bottom of the circuit board see Fig 10a are set by the factory based on the ...

Страница 19: ...h outdoor sensor please refer to the instructions included with the humidistat see page 5 sections 3 1 through 3 5 explain the functions of the Acu Steam wall and duct humidistats If you decide to use a standard mechanical humidistat by others connect the mechanical humidistat between the terminals marked GND ground HSTAT ON OFF on the humidifier electronic board ...

Страница 20: ...steam If the fan cannot start i e there is no air movement to transport the steam or insufficient air pressure the humidifier stops itself Please note that it may take a few minutes to bring the water to a boil The steam exits the water tank through the steam hose moves through the steam diffuser installed in the warm air duct and is released into the duct where it mixes with the moving air 12 6 A...

Страница 21: ...ric valve opens as needed to maintain the proper water level 13 8 When the humidity reaches the desired level the humidifier stops producing steam In order to eliminate the residues and keep the tank as clean as possible the humidifier drains after a certain maximum number of boiling refill cycles or water foam condition detected whichever comes first If there is still a demand from the humidistat...

Страница 22: ...r marginal drainage The supply valve was open for more than 6 minutes Humidi er immediately suspends the ongoing operation Heating elements and supply valve are switched off The power green light is ON Turn power off Check SW valve circuit for 24V DC at the valve Refer to manual p 10 and check for proper drain installation Make sure SW shut off valve is open SW valve is responding and SW tube is c...

Страница 23: ...still run with the knob at the minimum setting because of a range limiter inside the cover Press the white Drain button on the control panel The water will fill to flush the tank and then it will drain This process can take a number of minutes Once draining has completed turn the main power off There should be approximately one inch of water in the tank Wait a few minutes or until the unit has coo...

Страница 24: ...lements it will not adversely affect the operation of the unit Clean the scale from the bottoms of the stainless steel water discharge and water supply tubes using vinegar or a cleaning product designed to remove scale lime or calcium to enable unresricted water flow If scale is excessive affecting the flow of water replace the drain tube and sensors when necessary normally every 2 4 years these r...

Страница 25: ... Reconnect the white wire of the overflow sensor on the overflow pan terminal 16 11 Put the overflow and main drain tubes back into the rigid drain pipe 16 12 Put the cover back on the humidifier and lock it with the quarter turn latches 16 13 When finished turn the main power back ON ...

Страница 26: ...ater level sensors every 2 to 4 years We also suggest you replace the round o ring gasket around the tank All these components are available in a kit Contact your service company for more information 17 2 To prepare for the Summer Season Perform a complete maintenance as described in section 16 Shut the main power OFF Close the water supply valve Dry the inside of the tank ...

Страница 27: ...itten consent voids the warranty 18 4 All defective parts must be claimed within the warranty coverage period and shall be replaced at no charge transport included by Thermolec Thermolec does not cover the labor costs to execute the said repairs 18 5 Thermolec will not be held responsible for accidental or consequential damages nor for operational delays caused by the replacement of said steam hum...

Страница 28: ...Page 26 19 Wiring diagrams ...

Страница 29: ...Page 27 ...

Страница 30: ...Page 28 AcuSteam Pro 7 ...

Страница 31: ...going operation Heating elements and supply valve are switched off The power green light is blinking Turn power off Check for proper drain setup by referring to manual p 10 Check and clean tank SS siphon tube and silicon drain tube if necessary Reset when switching main power OFF and ON 5 The air pressure switch does not detect enough air pressure OR the high limit HSTAT senses extremely high humi...

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