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ST-37 – 

Instruction Manual

activation threshold (

see page 9, point II i

).  

The temperature is adjusted with  

PLUS

  and  

MINUS

. After several seconds, 

the display will return to its previous state. After reaching the water heater 

setpoint temperature, the hot consumption water pump is shut off, causing 

the central heating pump to be activated. 

In this mode, the fan and the feeder are limited to 62°C to prevent the boiler 

from overheating. Such condition will be kept until the water heater setpoint 

temperature   is   reached.   When   the   temperature   is   reached,   the   hot 

consumption   water   pump   is   shut   off   and   the   central   heating   pump   is 

activated.

The central heating pump will run until the water heater temperature drops 

below the setpoint value; then, the central heating pump is shut off and the 

hot consumption water pump is activated.

The hot consumption water priority function consists in that the consumption 

water is heated up before heating up water in radiators.

ATTENTION:

  The boiler should have non-return valves mounted on central 

heating and hot consumption water circuits. The valve mounted on the pump 

will prevent the hot consumption water from being discharged from the water 

heater. The valve mounted on the central heating circuit will not let the hot 

consumption water move from the water heater into the house circuit.

II.m.3)  Parallel Pumps

In this mode, the pumps run initially in parallel above the set temperature 

(see the pump switch-on temperature function).  The central  heating pump 

- 12 -

Water Heater Priority 

Parallel Pumps  *

Summary of Contents for ST-37

Page 1: ......

Page 2: ...enting provisions of the Low Voltage Directive LVD 2006 95 EC and the Regulation by the Ministry of Infrastructure Journal of Laws Dz U 03 90 848 of 2 April 2003 implementing provisions of the Directi...

Page 3: ...ore working on the power supply cable connections device installation etc All mounting works must only be carried out by qualified electricians Before activating the controller measure the electric mo...

Page 4: ...time is set If the furnace temperature is equal to or higher than the setpoint temperature the regulator is operated in its sustain cycle In each case the software version is customized to the furnac...

Page 5: ...first level The display shows the first two lines of the menu To navigate in each menu use PLUS and MINUS Pressing OPTIONS will move you to the next submenu or will enable an option Pressing EXIT will...

Page 6: ...disable the blow Press OPTIONS to enable disable the central heating pump Press OPTIONS to enable disable the water heater hot consumption water pump Press OPTIONS to enable disable the alarm II c Fee...

Page 7: ...e boiler to malfunction i e inability to burn all carbon and to reach the setpoint temperature Setting correct times will ensure correct boiler operation II e Fan Operation in Sustain Mode With this f...

Page 8: ...continuous increase of the temperature In particular interval in the sustain mode should not be too short and operation in the sustain mode should not be too long II g Feeder With this function you ca...

Page 9: ...al heating pump II j Central Heating Hysteresis With this function you can set the hysteresis of the setpoint temperature This is a difference between the temperature of entering into the sustain cycl...

Page 10: ...tral heating pump to be activated The hot consumption water pump will be activated again when the temperature drops to 50 C II l Blow Force With this function you can control the fan speed The adjustm...

Page 11: ...riority Activating the hot consumption water pump by selecting ON will cause the regulator to switch into the water heater priority mode In this mode the hot consumption water boiler pump is activated...

Page 12: ...until the water heater temperature drops below the setpoint value then the central heating pump is shut off and the hot consumption water pump is activated The hot consumption water priority function...

Page 13: ...sumption water pump runs throughout this period In the summer function only the setpoint temperature is set on the boiler that heats up water for the water heater After the summer function is enabled...

Page 14: ...lay shows the lower case letter p CONNECTING THE ROOM REGULATOR the room regulator has a two wire cable that should be connected to the controller s connection strip via a connector marked as room reg...

Page 15: ...rvals required for the second mode from Monday to Friday and from Saturday to Sunday Monday Friday Saturday Sunday Start is the time when the temperature starts to rise or drop Stop is the time when t...

Page 16: ...n mode i e when the furnace temperature is lower than the setpoint temperature When the furnace temperature fails to rise in the user defined period an alarm is activated the feeder and the fan are sh...

Page 17: ...djusted to your individual needs It is possible to return to the factory settings at any time By enabling factory settings all boiler settings that you have made will be replaced by settings made by t...

Page 18: ...to the previous working mode III b Thermal Protection The boiler is protected with an additional bimetal sensor located at the furnace sensor that deactivates fan and feeder inputs when the temperatur...

Page 19: ...the alarm will be sounded at 85 C Such condition may appear when the water heater or the pump is damaged or when the sensor has been improperly mounted However when the temperature continues to drop...

Page 20: ...ed to empty the boiler furnace in order to prevent the screw sensor or the grate sensor from being damaged III g Fuse The regulator has a network protection WT 6 3A tube fuse ATTENTION it is not advis...

Page 21: ...in symbol on a product means that the product may not be disposed of to household waste containers Recycling of wastes helps to protect the environment The user is obliged to transfer their used equip...

Page 22: ...nnection Diagram for Controller Particular attention should be paid when making cable connections with the controller Especially the grounding conductor should be connected properly PE GROUND YELLOW G...

Page 23: ...w Force 10 II m Working Modes 11 II m 1 House Heating 11 II m 2 Water Heater Priority 11 II m 3 Parallel Pumps 12 II m 4 Summer Mode 13 II n Room Regulator 13 II o Week Based Regulation 14 II p Temper...

Page 24: ...ST 37 Instruction Manual 24...

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