Protherm Bear 50 KLZ Guide d'installation

Output range 17 – 44.5 kWContinuous output modulationIntegrated 110 l hot water tankBearENversionxxxx_01 - v.3 2/2007Operation andInstallation Guide20

9Starting up the boiler Important: Putting the boiler into operation and starting it up for the fi rst time must be performed by an authorised service

10Operation of boiler with equithermal controlThe boiler regulates the heating water temperature on the basis of outdoor temperature changes. In the c

11than 85°C. The boiler is switched off when the temperature of the heating water is higher than 90°C (fault F3).Running pump depending on heating wat

12Professional maintenance of boilerOnce per year, preferably before the beginning of the heating season, we recommend that the boiler is checked and

13 Bear 20 KLZ Bear 30 KLZCategory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .II2H3PVersion . . .

14 Bear 40 KLZ Bear 50 KLZCategory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .II2H3PVersion . . .

15120290460976607792153730138550ac892869eConnection dimensions of boiler 20 (30, 40, 50)KLZTYPEabc eød20 KLZ327,5 191 505 177,5 13030 KLZ285 106 505 2

16Fig. 61. Control panel 10. Backfl ow valve for HeW circuit 19. Hot water (cold water) inlet2. “POLO-TURBO” superstructure 11. Backfl ow valve for HoW

17In the case of clogging of the system with dirt from the heating system or incrusta-tion sediments or problems caused by other clogging (e.g. cloggi

18The boiler is designed for combustion gases to be discharged (via a chimney inlet) with a minimum stabilised thrust of 2 Pa. The boiler is connected

1Bear 20 (30, 40, 50) KLZThe boiler’s Serial no. is shown on the plate which is attached to the rear side of the control panel. The control panel is a

19stress on all its elements during operation. In cases where the total quantity of heating water in the closed system exceeds 180 l it is essential t

20Content of boiler deliveryPROTHERM Bear 20 (30, 40, 50) KLZ boilers are supplied completely assembled and functionally tested. Associated armatures

21Boiler equipmentThe boiler PROTHERM 20 (30, 40, 50) KLZ comprises the following parts:- cast iron boiler body with thermal insulation.- burner plate

22CasingThis is composed of covers, fi rmly attached to the back wall and side plates, a detachable frontal wall and detachable upper part. The upper p

23Installing the boilerIn the case of service interventions into the boiler it is unconditionally necessary whenever the boiler is collected to the el

24damage, and must be replaced with new ones before the end of their useful life or before their reliability to meet their nominal parameters (as stat

25Preparing and starting the boilerCheck the water pressure on the boiler pressure gauge. By opening the gas cock gas is inlet into the boiler. Connec

26Before commencing setting, when the boiler is switched off (plug of electrical power cord is removed from socket), it is necessary to:- detach the

27Setting attenuation in heatingThe parameter “u” appears on the display and the diode fl ashes in the upper left-hand corner. This parameter is used t

28The boiler is connected to power supply by a three-core fl exible cord with a plug. A fi xed socket through which the boiler is connected to power mai

21. The boiler and all the associated equipment must be installed and used in accordance with the installation design, all the corresponding valid leg

29If it is necessary to convert to a different type of fuel (natural gas to propane and vice versa), the boiler is reconstructed in the following mann

30– otherwise this could cause damage (tearing) of “SOFT-LITE”). The red rotating knob underneath the plug has an arrow, which:- if turned in the dir

31Electrical diagram of boiler PROTHERM 20 (30, 40, 50) KLZFig. 11Combustion gas thermostatGas valve HoneywellEmergency thermostatPower cableblueContr

3the Operation guide, Service Book etc.). If the boiler is not put into operation, the original packaging of the boiler must be available for the pote

4Operating instructionsOperating instructionsControls and signalsMain switchThe main switch (Fig. 1, Position 7) is used to switch the boiler on or of

5Selecting Read modeSelecting Setup modeSetting hot water temperaturePress the MODE button – the diode in the upper left-hand corner of the display fl

6Equithermal mode Setting the equithermal mode, i.e. selection of the equithermal curve slope and parallel shift of the curve, is possible only in th

7Valid only for connection of outdoor sensorFig. 4Schematic diagram of boiler control

8Error codes No flame – F1This signals automatic irreversible blocking of the automatic ignition and closure of the gas valve, i.e. LOSS OF FLAME. Thi