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“ON” and “OFF” positions, and shall disconnect all 
current carrying conductors simultaneously.

 

 

    

Prior to installing the dehumidifier, apply power to the 
unit and verify the fan and compressor are operating 
normally.

 

 

    

The power supply cord contains a ground fault circuit 
interrupter (GFCI) that senses damage to the power 
cord. To test your power supply cord, do the following: 
1. Plug in the Surna Dehumidifier. 
2. The plug head has two buttons TEST/RESET.  Press  
     the TEST button and the RESET button will pop out. 
3. Press the RESET button and the TEST button  
     disengages. 
4. The power supply cord is now supplying electricity to  
     the unit. Power is indicated by a green light on the  
     plug head. 
DO NOT operate this unit with a damaged power cord. 
If the power cord is damaged it must be replaced by the 
manufacturer or a qualified/licensed service technician.

 

 

    

DO NOT use extension cords or plug adapters. These 
actions may result in a fire hazard or electric shock.

 

 

  

  

This unit must be connected to a protective earthing 
system prior to operation. DO NOT remove the 
grounded connection while power is being supplied to 
the Surna dehumidifier. Doing so presents an electric 

shock hazard to users and service personnel.

  

 

This device is intended for indoor use only and should be 
protected from rain and flooding.

  

This equipment is not meant for connection to a ducting 
system. 
 
 

  

Only use Surna supplied or recommended equipment 
with the Surna dehumidifier.  
 
 

 

Care must be taken when handling sheet metal. Sheet 
metal parts have sharp edges and could cause serious 
bodily injury. 
 
 

 

The components of this unit have been inspected at the 
factory and readied for shipment. Upon receiving the 
shipment a visual inspection of the packaging must be 
performed. Any shipping damage must be noted at time 
of delivery. 
 
 

 

 

DO NOT use this unit as a bench or table.

7

Summary of Contents for 250 PPD

Page 1: ...SURNA 250 PPD DEHUMIDIFIER OPERATING AND MAINTENANCE MANUAL surna com Model 3 250 March 2019...

Page 2: ......

Page 3: ...TABLE OF CONTENTS Specifications 4 Technical Description 5 Warnings 6 Warranty Information 8 Installation Instructions 10 Operation Instructions 18 Routine Maintenance 19 Troubleshooting 21 3...

Page 4: ...Condensate Drain 3 4 NPT ELECTRICAL Volts Phase 208 230V Single Nominal Current Draw 12 8A 12 0A Maximum Overcurrent Protection 20A Power Factor 99 PERFORMANCE 40 45 50 55 60 65 70 50 100 150 200 250...

Page 5: ...hich act like an expansion valve Refrigerant then flows to the evaporator coil The evaporator coil is where heat is transferred from the incoming air to the liquid refrigerant causing it to evaporate...

Page 6: ...adhere to all applicable safety guideline requirements in this document and all applicable electrical and mechanical jurisdictional codes Using Surna dehumidifying equipment in a manner not described...

Page 7: ...fied licensed service technician DO NOT use extension cords or plug adapters These actions may result in a fire hazard or electric shock This unit must be connected to a protective earthing system pri...

Page 8: ...bilities under this Warranty are limited to furnishing replacement equipment or parts at its option FCA Incoterms 2000 factory or warehouse f o b factory or warehouse for US domestic purposes at Compa...

Page 9: ...vidual order 1 Surna 250 PPD dehumidifier 2 Surna 250 PPD dehumidifier product manual 3 Humidistat 4 15 ft of thermostat wire 5 PVC condensate trap INTENDED APPLICATION The Surna dehumidifier is inten...

Page 10: ...ust in line with cold air exhaust from other air handling or cooling units circulatory fans Improper positioning will decrease unit efficiency and could cause damage to the unit ELECTRICAL This unit i...

Page 11: ...n overflow Use of a p trap reference figure 2 is required to avoid pressure and vacuum related issues which can negatively affect condensate drainage Following plumbing installation the system should...

Page 12: ...Pan Vent Mounting Brackets P Trap Drain Airflow In Airflow Out Ceiling 12 min clearance Exhaust min 24 Clearance Air Intake min 24 Clearance Figure 2 Installation diagram shows proper mounting of Sur...

Page 13: ...tructure in front of intake or discharge A FLOW FLOW 3 W O L F W O L F REQUIRED UNIT CLEARANCES Figure 3 Required minimum clearances for Surna dehumidifier A Minimum 12 inches 30 5 cm of clearance abo...

Page 14: ...a e l c f o s e h c n i 2 1 n i M A B Min 24 inches recommended 72 inches between 2 units with adjacent intakes FLOW FLOW FLOW FLOW B 4 FLOW FLOW 3 1 or 2 5 A A Minimum 12 inches 30 5 cm of clearance...

Page 15: ...ing fans within 3 feet recommended 72 inches from intake or discharge of unit A Min 12 inches of clearance above and below FLOW FLOW FLOW FLOW FLOW FLOW A A 3 A Minimum 12 inches of clearance above an...

Page 16: ...humidifier Oppose flow by 90 degrees for neighboring units No conditioned air discharge or circulating fans within 3 feet minimum recommended 72 inches from intake or discharge of unit A Minimum 24 in...

Page 17: ...DELAY RELAY HUMIDITY CONTROL FAN MOTOR COMPRESSOR CAP FAN RELAY COMPRESSOR RANCO TEMP CONTROL RED YELLOW BLUE BLK WHITE RED BLUE BLK RED BLUE LINE NEUTRAL WHITE COM ORANGE 240 VAC RED 24 VAC BLUE BLUE...

Page 18: ...ont of the unit to the ON position and set the provided humidity controller to the desired setting for the space A D DRAWN Mounting Brackets Filter Set Screw Dehumidistat Switch Connector ON OFF Toggl...

Page 19: ...e of the unit DO NOT use coil cleaner that is designed for outdoor coils as it may be corrosive The Surna Dehumidifier comes equipped with an electrostatic filter If properly maintained electrostatic...

Page 20: ...f it is not possible to clean the filter to the point where light is able to shine through the filter should be replaced 6 Let filter air dry for at least 10 minutes The filter can be used damp but no...

Page 21: ...istat is set to on NOTE The Surna dehumidifier is intended to operate in temperatures above 70 F 21 C and relative humidity of 45 or higher Temperature and relative humidity affect performance Contact...

Page 22: ...NOTES 22...

Page 23: ...NOTES 23...

Page 24: ...surna com 1780 55th Street Boulder CO 80301 303 993 5271 info surna com A P E 24...

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