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SD Electronic Steam Humidifiers Installation & Maintenance Manual Read and Save these Instructions

Installation & Maintenance Manual How The SD 2000 Works The SD 2000 humidifier is what is called an “electrode” humidifier. This means that instead of heating elements, metal electrodes are immersed in water contained in a plastic cylinder. When steam is required for humidification, electric current flows through the water between the electrodes. The minerals in the water provide both the conductance and resistance for electric flow, thus producing steam. This technology is VERY advanced over electric element type humidifiers and has the following advantages: • • • • Efficiency: Operates at...

WARNING: Your humidifier requires water to operate. Do NOT mount it above materials or machinery that could be damaged if a leak occurs. Carel assumes no responsibility for consequential or inconsequential damage as a result of any leaks.

Installation & Maintenance Manual Your SD 2000 steam humidifier will consist of: Steam humidifier unit Steam distributor pipe(s) or Room Distribution Unit (blower) Steam hose & condensate hose, hose clamps Mounting bracket, mounting hardware and water fill quick connect fitting Humidity sensors or controllers IMPORTANT: BEFORE beginning installation: Check for shipping damage to cartons. Mark the shipping waybill accordingly. Open cartons and check for any hidden damage. Mark the shipping waybill accordingly. Check packing slip to insure all items have been received. Notify Carel...

1. General Installation Rules Mount the humidifier unit as close to the steam distributor pipe or Remote Distribution Unit as possible to minimize condensate. Mount the humidifier unit below the steam distributor pipe or RDU whenever possible. Insure that a slope can be maintained in the steam hoses. Avoid kinks and gullys in steam hoses which can trap condensate and cause problems. Certain mounting clearances must be maintained to allow access for maintenance, and for steam discharge from an RDU: NOTE: Dimension A is clearance required in front for maintenance and RDU steam discharge....

Installation & Maintenance Manual 2. Mount Steam Humidifier Sizes and Weights FACTOR C – HEIGHT A – WIDTH B – DEPTH DRY WEIGHTS – LBS. WET WEIGHTS – LBS.

Position of Steam Outlets UNIT MODEL NUMBER: DIMENSIONS DIMENSION 101 102 103 106 303 305 308 313 323 333 342 360 384 3B3 A 3.2” 3.2” 3.2” B 3.2” 4.1” 3.2” 4.1” 6.7” 6.7” 6.7” C 12.2” 12.2” D 3.7” 4.3” 3.7” 4.3” 5.7” 5.7” 5.7” NOTE: Allow clearance on the top of the humidifier for the steam hoses to exit and travel to their duct distributor pipes (if used). Mount the supplied humidifier mounting bracket to the wall using screws or lag shields capable of supporting the weight. The top of the bracket will create a gap to the wall. Hang the unit on the bracket and secure the bottom using...

Installation & Maintenance Manual 3. Connect Plumbing 3.1. Connect Water Feed The water feed connection is a 3/4” MPS male connection on the bottom of the humidifier (2 on SD360 & 384 models, 3 on SD3B3). Carel supplies a plastic adapter that screws onto the fill fitting and gives a 1/4” OD compression fitting for plastic or copper tubing. Since there is a strainer built into the bottom of the fill valve fitting, you should use only the plastic adapter supplied as it is easily removable for maintenance. To insure proper filling of the unit during operation, run a 1/2” water line to within 3...

4. Connect Power Wiring Before connecting any power supply, check the data label inside the electrical compartment door to make sure the unit configuration matches the power supply. If it does not match, do NOT connect power – call your Carel representative. Insert the high power wires through the strain reliefs provided on the BOTTOM of the humidifier and wire directly to the field wiring terminals as shown below without loops. DO NOT bring high power wires into the humidifier from any other point. High power wires near the low voltage controls can damage them and VOID WARRANTY. An...

Installation & Maintenance Manual 5. Connect Control Wiring 5.1. Controls Placement A typical humidifier control system includes a wall or return duct sensor or controller, a high limit duct humidistat, and an air proving switch. Placement of these devices is critical to proper operation of the overall system. The return air RH sensor must always be located BEFORE any outside air intake, in order to insure accurate sensing of the air from the space. Alternatively, a room RH sensor or humidistat can be used. Room sensors should be located on an inside wall or post and should not be hit by...

Wiring the CDP Proportional Controller The CDP controller is designed to accept various modulating input signals: 0-10 Vdc, 0-20 Vdc, 2-10 Vdc, 0-20 mAdc and 4-20 mAdc. The DIP switches located on the back of the controller must be set for the appropriate input signal. NOTE: the modulating signal must come from a controller or DDC system, not a sensor. The CDP controller follows the input signal being off at low signal and full on at full signal. Wiring the CDH Humidity Readout Proportional Controller The CDH controller is designed to accept an input signal from a humidity sensor (not...

Installation & Maintenance Manual 6. Install Steam Distributor Pipes If your SD 2000 humidifier was supplied with duct steam distributor pipes, they must be mounted completely level in the duct with the steam outlet holes facing up as shown to the right. Support the end of longer distributor pipes if needed. Distributor pipes should be mounted per the diagrams shown below, with a minimum of 6” from the center of the distributor pipe to the top of the duct and 3” minimum to the bottom. Generally the distributor pipes should be mounted in the center of the air stream. Multiple pipes need to...