Zodiac DT 850, Installation Instructions And Use

7 

1.3.5.3 Cable sizes



Supply cable size: for cables of a maximum length of 20 metres (calculation basis: 5A/mm²), this 

must be checked and adapted depending on installation conditions.

Voltage 

Nominal power 

consumption 

Maximum power

consumption 

Cable size 

DT 850 

230V-50 Hz- 

4.5

A 18

A 

3 x 2.5 mm² 

3G2.5 

1.4 Operation

1.4.1 Control unit  

1.4.2 Starting the appliance 



 Put the appliance under power by connecting the power cord, 



 First run:  

- turn the hygrostat dial completely clockwise (the appliance will run  permanently), 
- let the dehumidifier run until the desired hygrometry level is reached (typically 65%),  
- turn the dial in the opposite direction until the indicator light switches off, 
- the dehumidifier will now automatically maintain this level of hygrometry. 



 Adjusting fan speed:  

- 

 high speed: if the pool is not covered  

- 

 low speed: if the pool is covered (bubble cover, section cover, etc…) 



 Defrosting control and protection of the compressor: this dehumidifier features an automatic 

battery defrosting system that operates by stopping the compressor and using forced ventilation. 
This defrosting cycle is controlled and triggered by an Alpha 14/1 electronic module that monitors 
the state of the evaporator sensor/probe (S.IN) every 20 minutes (the compressor stops for 8 
minutes maximum) and the condenser sensor (S.OUT) protects the compressor. If the HP 
temperature is higher than 65 °C: the appliance will stop and forced ventilation will run until the 
temperature drops to under 50 °C.  

1.4.3 Checks 



 check that the appliance is draining condensation,  

2. Maintenance 

2.1 Maintenance instructions

2.1.1 Monthly checks 



 check visually that the condensation is drained. 



  check for clogging in the filter: 

- wash the filter with warm soapy water, 
- rinse it abundantly and dry it, 
- replace it if necessary. 

The appliance must have filters fitted when operating. 

Appliance powered off and unplugged from power supply! 

A general servicing of the appliance is strongly recommended to check the proper 
operation of the appliance, maintain its performance, to avoid certain faults and preserve 
the building in good condition.

When making a dehumidification request, there will be a temporisation of 3 minutes before 
the fan and the compressor begin to operate.

Operating indicator (light on 

when the ventilation is on)

Switch for selecting fan 

speed

Button for adjusting the 
hygrostat (note: 0 = 100% 
hygrometry)