Subject to technical modication
EKS_P0082_AZ_0002
ELECTRIC DUCT HEATERS
EKS
EKS NI
EKS NIS
EKS NV
EKS NV PH
EKS NV PTC/PS
USER MANUAL
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EKS (NI, NIS, NV, NV PH, NV PTC/PS)
www.salda.lt
Safety instructions and precautions 3
WARNING! SAFETY REQUIREMENTS 3
TRANSPORTING AND STORING 3
RECEIVING AND HANDLING 3
SERVICE 3
QUALITY 3
INGRESS PROTECTION (IP) RATING 3
MARKING 4
INSTALATION 4
Electrical connection 4
WIRING DIAGRAMS 5
HEATERS DESCRIPTION & STRUCTURE 6
Double overheat protection 6
Duct connection 6
CONTROL 7
External control of three-phase heaters 7
External control of one-phase & two-phase heaters 7
Heaters with built-in control 7
Air velocity 7
CIRCULAR DUCT HEATER TYPES 7
Appendix A. CIRCULAR DUCT HEATERS POWER &
DIMENSIONS 8
TROUBLESHOOTING 10
NOTES 11
WARRANTY 12
WARRANTY CLAIM FORM 12
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EKS (NI, NIS, NV, NV PH, NV PTC/PS)
www.salda.lt
Improper use of this heater can result in serious bodily injury due to hazards of re and explosion, burn and electrical shock.
The electrical heater’s model and serial number are located on the label of the product.
Parts of the heater become very hot when operating and immediately after operating.
Severe burns may occur if the heater is not allowed to cool down properly before servicing.
Use only with electrical voltage and frequency specied on model label.
Do not perform any service with heater plugged in. Serious injury or death may occur if personnel come in contact with high voltage
lead.
All products are packed by producer for normal transporting conditions. For unloading and storing use proper lifter to prevent product
damage and employees injuries. Do not lift product by power supply cable, connection box. Avoid impacts and impact loads.
Until nal installation store products in dry place with humidity not more 70% (20°C), average ambient temperature must be 5-40°C.
Storing place must be covered from water and dirt. Avoid long term storing. It is not recommended to store products more then 1 (one)
year.
Inspect heater for any possible shipping damage. Inspect heater element wire for any deformation that could cause a short circuit or
ground. Make sure that casing of the heater is not damaged.
We care about quality. 100% of heaters are tested before shipment.
No special service is required for electrical heaters, only to check electrical connection not less then 1 time per year.
First Numeral Protection against contact and ingress of foreign bodies: most wires, screws, etc.
Second Numeral Protection against water: water splashing against the enclosure from any direction shall have no harmful eect. Heaters type EKS, EKS NI, EKS NIS protection rating is IP44/IP55.
Heaters type EKS NV, EKS NV PTC/PS, EKS NV PH protection rating is IP30.
Thank you for your purchase of this product. This manual describes how to use and install the supplied product. Be sure that you have
read and understood its contents before using the heater.
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EKS (NI, NIS, NV, NV PH, NV PTC/PS)
www.salda.lt
EKS NV 40 x 20 / 21 PTC / PS
Heater with installed pressure sensor
PTC/PS type can be marked also as NV PH if temperature setpoint of the heater -20°C to -5°C
Heater with installed air ow sensor
Power of heater kW
Heaters width
Heater height cm
Heater type.
Type NV - you can set temperature of heater with potentiometer installed on heaters casing.
Type NI - you can set temperature from distance with wired remote potentiometer TR5K
Type NIS – heater control from distance with 0 – 10 V signal.
Circular duct heater
Heater can be installed in any position (see picture below) except electrical connection box downward. If heater is installed in such way that can be
accidental contact with heating elements, protective grill must be installed. Air ow through heater must be not less 1,5 m/s. Heaters can not be in-
stalled in explosive and aggressive substances atmosphere. Heaters can be used only for clean air heating. Heaters intended for inside installation.
Heaters installation position:
EKS NV PTC/PS, EKS NV PH installation
Casing and air duct before heater should be insulated with rock wool 10 cm (R~2,4m²K/W). It is recommended to install air lter before the
heater.
*AHU – air handling unit with heat recovery. F – lter for supply air.
Depending on the installation location of the heater in the duct relative to the engine (before or behind the engine), the pressure hose therefore has to
be attached to a “+” or the “-” tube. If heater is installed behind engine “-” tube inside, “+” tube before the engine.
3xH – we recommend install duct temperature sensor in minimum distance multiplied by the heater’s height. For example: heater EKS
height 200mm, sensor’s installation length will be: 200x3=600 mm.
INDICATION of LED lamps on EKS NV PTC/PS, EKS NV PH casing
1. LED1 Flashing 1 time per 3 seconds – EKR KN warming up (~30 s)
Flashing 1 time within second – EKR KN ready, Lights up – fault of duct temperature sensor T J-K10K, or air ow sensor PTC fault.
2. LED2 Lights up – load is on (heating).
1. Electrical connection can be made only by qualied electrician according legal international and national electrical installation standards.
2. Power supply source must conform with data on heater label.
3. Power supply cable must be selected corresponding to heater electrical data.
4. Automatic circuit breaker with at least 3 mm contact gap must be installed. Automatic circuit breaker must and relay be selected corresponding to
technical data table.
5. Heater must be grounded.
6. For heaters install duct temperature sensor and connect as in wiring diagram.
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