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Summary of Contents for TECH ST-77
- Page 1 ST – 77 Manual Guide...
- Page 2 ST-77 – Manual Guide TECH Declaration of compatibility number 3/2004 We, TECH company, ul. St. Batorego 14, 34-120 Andrychów, declare with the full responsibilty, that thermoregulator ST-77 230V, 50Hz produced by our company complies with the demands of the Decree of the Ministry of Economy, Employment and Social Politics (Dz.
- Page 3 TECH CAUTION! IVE ELECTRIC DEVICE Before doing anything demanding current supply (e.g. connection wires, installation of the device, etc.) one must make sure that the regulator is not live! The device should be intstalled by a person with adequate electrical training and certificates.
- Page 4 Button MINUS I. Description Temperature regulator ST-77 is to be used with the Central Heating Boilers. It steers the pump of water circulation, the pump of Consumed Hot Water (C.H.W.), the fan and the fuel feeder. if the temperature of the boiler is lower than the Set Temperature, the ●...
- Page 5 TECH II. Functions of the regulator This chapter describes the functions of the regulator, the way of changing the set up, and the way of using the menu. II.a) Main page SetTemp During the normal work of the regulator, the LCD projector shows...
- Page 6 ST-77 – Manual Guide For the user’s comfort, the regulator was equipped with the Manual Work function. This function allows for turning each element of the system on and off regardless of the other elements. Feeder Pressing button MENU starts the fuel feeder. The feeder works until button MENU is pressed again.
- Page 7 TECH II.c) Working time This option allows for setting up the working time of the fuel feeder. Working time set up depends on the type used fuel as well as on the type of the boiler. Set Temp Feeder Work Time...
- Page 8 ST-77 – Manual Guide Feeder BreakTime CH and CHW Pump CH and CHW Pump This function allows to set up the temperature of turning CH and CHW Pumps on (it’s the temperature measured in the boiler). Below the set temperature both pumps don’t work, above the set temperature both pumps are turned on, but they work depending on the settings, i.e.
- Page 9 TECH CHW Hysteresis Hysteresis Hysteresis This function allows for setting up hysteresis of the set temperature. It is the difference between the output temperature in the support cycle, and the temperature needed for return to the cycle of work (e.g. when...
- Page 10 ST-77 – Manual Guide Set Temp Fan Speed CHW Pump To change the set temperature of CHW pump, press button Escape- wyjscie (hold it for a few seconds) and the screen will project boiler’s set temperature and boilers actual temperature.
- Page 11 TECH Room regulator can be adjusted to the regulator ST-77. Then it has a higher priority. The feeder and the fan work until the temperature set on the room regulator is reached. However, the work of the boiler is limited by the temperature set on the regulator installed on the boiler.
- Page 12 ST-77 – Manual Guide Set Temp alarm Constant CH Pump II.m) Summer function Set Temp Constant CH Pump Summer Function After activating this function the CH pump is turned off and the CHW pump is turned on above the set temperature (see sub-chapter: Temperature of turning CH and CHW pumps on).
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Page 13: Safety Protection
TECH This function allows for regulating the work of the boiler during the support cycle. It prevents the boiler from burning out when the temperature of the boiler is above the set temperature. In this function the break time of the feeder and the fan need to be set up. -
Page 14: Sensor Failure
ST-77 – Manual Guide III.a) Temperature Alarm This protection activates only in the cycle of work (i.e. when the temperature of the boiler is lower than the Set Temperature). If the temperature does not increase in the time set by the user (see sub-... - Page 15 TECH III.d) Protection against boiling water in the boiler This protection prevents high temperature to appear in the boiler (only during using the function: boiler’s priority). When the set on the boiler tempertaure equals 55 degrees Celsius and the actual temperature in the boiler equals 62 C, the feeder and the fan are turned off.
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Page 16: Maintenance
ST-77 – Manual Guide IV. Maintenance It is important that the technical condition of the cabling is checked before and during the heating period. Additional actions that need to be taken in the same time are: check the fastening of the regulator, clean it from dust and other contamination;... -
Page 17: Installation
TECH VI. Installation Caution! Installation should be performed by a person with adequate training and certificates. The device MUST NOT BE LIVE at the time installation (one MUST make sure that plug DISCONNECTED from the power network). CAUTION! Wrong installation of the cabling may damage the regulator. - Page 18 Spis treści I. Description................4 II. Functions of the regulator............5 II.a) Main page..............5 II.b) Manual work..............5 II.c) Working time..............7 II.d) Break Time..............7 II.e) Temperature of turning CH and CHW pumps on....7 II.f) CHW Hysteresis.............8 II.g) Hysteresis..............8 II.h) Fan Speed..............9 II.i) Activation of CHW Pump – Boiler’s priority......9 II.j) Room regulator............10 II.k) Alarm................11 II.l) Function of the constant CH pump........11...
- Page 19 GWARANCJA TECH company gaurantees correct functioning of the product for the period of 30 months from the date of purchase. The company obliges itself to repair any faults that are producer’s fault, free of charge. In this case the device has to be delivered to the place of purchase.
- Page 20 Notes:...
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