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'Controls to make life easier'

Established 1990

    Pro-therm Controls

Ventilation Control  HP54 - Replaces HP36, HP37, HP38

4 Stage Poultry house ventilation control

General Description


HP54 is a 4 stage control for switching ventilation fans or stages of heating. Programmable for step or sequential control. It can replace HP36, HP37. HP38


An additional relay gives 1 addtional heat or cool output to suppliment ventilation/heating


For poultry safety, a minimum ventilation cycle timer output exists to ensure a small amount of airflow exists under all circumstances.


With addition of HPAL relay module, high and low alarm protection is available.


Enclosures available are 96x96x58mm panel mounting or 98x125x75mm IP54 surface/wall box.

Technical Specification


Power supply                                                      230V +/- 10%

Mains frequency                                                50Hz +/- 20%

Power consumption                                           4W

5 x SPST Output Relays:

Resistive contact rating                                     4 Amp 220V - AC1

Inductive contact rating                                     2 Amp 220V - AC3

Operating temperature                                       -10/70 Deg.C

Overall dimension                                             96 x 96 x 63 mm

Overall dimension (IP54 version)                     98 x 125 x 75 mm

Main Features

  • Temperature sensor supplied, -50.0/115.0 Deg.C or F     

  • High & Low alarms via HPAL relay module.

  • Adjustable ventilation temperature band.

  • Ventilation programmable, step or sequence action.

  • Set point adjustable relative to ventilation band.

  • Output LEDs show control status.

  • Removable terminal strips

  • 4 output relays

  • 1 heat/cool relay.

  • Socket output for High alarm and Low alarm.

Rear view of connections

Supplied with 2 sensors

HPAL Alarm output module

UK Mail Address:  Pro-Therm Controls  21 Main Road,   Ratcliffe Culey,

Atherstone,  Warwickshire. UK.   CV9 3NY

We take:

E-Mail: vince@pro-therm.co.uk

Phone:  (0044) 01827 711039

Fax: (0044) 01827 711041