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Baxi PRIME HT 1.120, Installers And Users Instructions, Page: 33 / 40

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Baxi PRIME HT 1.120 Installers And Users Instructions Download Page 33

33

INSTRUCTIONS FOR THE INSTALLER

Figure 27

0402_2516

 

heating  domestic water  

gas  

domestic water  heating

 

inlet 

outlet 

 

inlet 

return 

SEALED CHAMBER

1 

heating delivery cock

2 

gas service cock

3 

filling the system

4 

cold water inlet on/off valve and filter

5 

heating return cock

6 

DHW NTC sensor / boiler unit NTC sensor

7 

DHW priority sensor

8 

non return value

9 

flow sensor with filter and water flow rate limiter

10 

pressure relief valve

11 

manometer

12 

boiler drain point

13 

pump and air separator

14 

automatic air vent

15 

plate-type DHW heat exchanger

16 

gas valve

17  

fan

18  

gas diaphragm

19  

mixer with venturi

20 

flue-water exchanger

21  

air/gas mixture header

22 

flame detector electrode

23 

main burner

24 

ignition electrode

25 

NTC flue sensor

26  

coaxial fitting

27 

expansion vessel

28 

central heating NTC sensor

29  

105°C overheat thermostat

30  

siphon

31 

water pressure switch

32 

3-way valve motor

33 

three way valve

34 

automatic bypass

27. BOILER SCHEMATIC PRIME HT 240 - HT 280 - HT 330

Key:

Summary of Contents for PRIME HT 1.120

Page 1: ...ers electric water heaters and has been certified by CSQ as conforming to UNI EN ISO 9001 This certification confirms that the Quality System of BAXI S p A in Bassano del Grappa where this boiler was manufactured satisfies the strict UNI EN ISO 9001 standard covering all aspects of company organisation manufacturing and distribution UNI EN ISO 9001 CERTIFICAZIONE DEI SISTEMI QUALITA DELLE AZIENDE PRIM...

Page 2: ...ere some very useful information which will help you to run your boiler correctly and efficiently Do not leave any parts of the packaging plastic bags polystyrene etc within children s reach as they are a potential source of danger BAXI boilers bear the CE mark in compliance with the basic requirements as laid down in the following Directives Gas Directive 90 396 CEE Performance Directive 92 42 CEE...

Page 3: ...21 Activating the flue sweeper function 29 22 Output pump head performances 29 23 How to disassemble the DHW heat exchanger 30 24 Cleaning the cold water filter 30 25 Annual service 30 26 Using the Siemens QAA73 temperature regulator to program boiler parameters 31 27 Boiler schematic 33 34 28 Illustrated wiring diagram 35 36 29 Technical data 40 1 Instructions prior to installation 4 2 Instructions...

Page 4: ...to ensure correct operation of the appliance and avoid invalidating the guarantee observe the following precautions 1 Hot water circuit 1 1 If the water hardness is greater than 20 F 1 F 10 mg calcium carbonate per litre of water a polyphosphate or comparable treatment system responding to current regulations 1 2 Domestic Hot Water circuit must be thoroughly flushed after the installation of the ap...

Page 5: ...hot water temperature control knob 8 Pressure gauge Figure 1 To correctly light the burner proceed as follows 1 provide power supply to the boiler 2 open the gas cock 3 follow the directions given below regarding the adjustments to be made at the boiler control panel Initial lighting of the boiler must be carried out by a licensed technician Ensure the following operations are carried out a compli...

Page 6: ...ll flow is being drawn off To save energy keep the domestic hot water temperature control knob turned to comfort figure 2 In the winter it will probably be necessary to increase the temperature of the hot water to suit conditions 3 2 ADJUSTING DOMESTIC HOT WATER TEMPERATURE The central heating system must be equipped with a thermostat to control room temperature If no room temperature thermostat is ...

Page 7: ...rvice centre Turn selector 1 figure 1 to R for at least persists call an authorised service centre Turn selector 1 figure 1 to R for at least 1 second If this fault persi sts call an authorised service centre Call an authorised service centre Check the position of the ignition electrodes section 19 Call an authorised service centre Description of fault Outdoor temperature sensor fault Central heatin...

Page 8: ...ral gas can be converted to work with LPG Any gas change must be effected by a Qualified Service Engineer To maintain efficient and safe operation of your boiler have it checked by a Qualified Service Engineer at the end of every operating period Careful servicing will ensure economical operation of the system Do not clean the outer casing of the appliance with abrasive aggressive and or easily flamma...

Page 9: ...maging metal plastic and rubber parts use only neutral cleaners i e non acid and non alkaline The recommended products for cleaning are SENTINEL X300 or X400 and FERNOX heating circuit restore To use this product proceeding strictly in accordance with the maker s directions 2 2 existing system Before proceeding with installation of the boiler the system must be cleaned and flushed out to remove slu...

Page 10: ... the manufacturer according to the instructions given in the following sections Connect the condensate outlet to the siphon supplied with the boiler Connect the siphon to a drain making sure there is a continuous slope Horizontal sections must be avoided 11 BOILER INSTALLATION 12 BOILER SIZE 0505_2001 Figure 5 9912220300 BOILER WIDTH 450 BOILER CONNECTION POINTS BOILER HEIGHT 780 0211_2203 PRIME H...

Page 11: ... be installed In case exhaust and intake flues not supplied by BAXI S p A have been installed these must be certified for the type of use and must have a maximum pressure drop of 100 Pa Warnings for the following types of installation C13 C33 The terminals for the split flue must be provided for within a square with 50 cm sides Detailed instructions are given together with each accessory C53 The term...

Page 12: ...ding and in case a LAS flue is fitted The 90 coaxial bend allows to connect the boiler to a flue air duct in any direction as it can rotate by 360 It can moreo ver be used as a supplementary bend and be coupled with a coaxial duct or a 45 bend 990519_0400 Concentric outlet Figure 9 LAS FLUE DUCT Ø 60 100 MM INSTALLATION OPTIONS HORIZONTAL FLUE TERMINAL Ø 60 100 MM INSTALLATION OPTIONS If the flue outl...

Page 13: ...gle flue ducts Comburant air may be drawn in at a different site from where the flue terminal is located The splitting kit consists of a flue duct adaptor 100 80 and of an air duct adaptor For the air duct adaptor fit the screws and seals previously removed from the cap 011015_0100 flue duct adaptor Intake air duct adaptor The 90 bend allows to connect the boiler to flue air ducting regardless of direct...

Page 14: ...by 0 25 metre IMPORTANT Ensure a minimum downward slope of 1 cm toward the boiler per each metre of duct length Make sure that the exhaust and intake ducts are securely fixed to the walls L1 L2 max 80 m L max 15 m 0207_0907 010828_0600 The maximum length of the suction duct must be 15 metres SEPARATED HORIZONTAL FLUE TERMINALS INSTALLATION OPTIONS ...

Page 15: ...tions Connect the boiler to a 230V monophase ground power supply by means of the three pin cable supplied with it and make sure you connect polarities correctly Use a double pole switch with a contact separation of at least 3mm in both poles In case you replace the power supply cable fit a HAR H05 VV F 3x0 75mm2 cable with an 8mm diameter max The fuse a fast acting type rated 2A are incorporated in...

Page 16: ...nnecting single system boilers to external DHW boilers An optional interface card is required to connect the QAA73 temperature regulator to boiler s own electronic control card Connect the interface card to connector X 300 on the boiler s electronic control card figure 13 Terminals 1 2 3 terminal board M2 connections for a zone control solenoid valve see figure 15 in section 15 4 Domestic hot water ...

Page 17: ...ameter HC1 gradient Selection of central heating circuit temperature curve kt HC1 max output Central heating system maximum output temperature Type of building Room compensation Activation deactivation of the influence of the room temperature If it is deactivated the outdoor temperature sensor must be installed Automatic adaptation of the temperature curve kt in relation to the room temperature Opt...

Page 18: ...urve Kt as instructed in the table of chapter 26 Graph 1 shows the available temperature curves 15 3 CONNECTING THE OUTDOOR TEMPERATURE SENSOR PROBE fault messages In the event of fault the display panel on the QAA73 shows the flashing symbol Press the information key to display the error code and a description of the fault Code Display Fault description 10 Outsidesense Outdoor temperature probe se...

Page 19: ...ifted automatically on the basis of the room temperature set using the QAA73 climate control If the central heating system is divided into more than one zone the temperature curve must be set on the QAA73 and in the boiler See section 26 for boiler settings The appliance s electronic control system provides a central heating output temperature equal to the highest of the two values set on the QAA7...

Page 20: ...r of the values set on the QAA73 and calculated by the boiler s electronic control card Use the boiler control panel to set room temperature in the other zones 1 Zone ROOM THER MOSTAT The electrical connections and settings needed to control a multi zone central heating system vary depending on what accessories are connected to the boiler To permit the boiler to handle requests from individual zon...

Page 21: ...ensor s probe in the relevant hole in the boiler Set domestic hot water temperature using the control knob 7 figure 1 on the boiler s front panel Figure 16 0402_2511 UB DHW boiler unit UR central heating unit V3V three way valve M2 terminal board SB DHW priority sensor MR central heating delivery MB DHW delivery RR central heating DHW return RB resistor to be removed NOTE legionella function is act...

Page 22: ...mply turn control knob 7 figure 1 NOTE This function is interrupted if the central heating delivery temperature reaches its MAX SETPOINT Proceed as follows to calibrate the gas valve 1 Calibrate maximum thermal power With the boiler operating at maximum thermal power check that the value for CO2 measured in the flue corresponds to that specified in table 1 a b c If necessary turn the adjuster screw V...

Page 23: ...23 INSTRUCTIONS FOR THE INSTALLER 0402_2512 Figure 18B Figure 19 0402_2513 5 seconds Figure 18A Figure 20 0402_2514 5 seconds ...

Page 24: ...t 8 4 9 5 Gas nozzle 4 0 mm 4 0 mm Table 1c Table 1b PRIME HT 330 HT 1 280 G20 2H 20 mbar G31 3P 37 mbar CO2 max heat output 8 7 10 CO2 min heat output 8 4 9 8 Gas nozzle 12 0 mm 12 0 mm Table 1a PRIME HT 280 Gas consumption at 15 C G20 2H 20 mbar G31 3P 37 mbar 1013 mbar PCI 34 02 MJ m3 46 3 MJ kg Consumption at max heat output 3 06 m3 h 2 25 kg h Consumption at min heat output 0 95 m3 h 0 70 kg ...

Page 25: ... 330 3 50 35 4100 3500 PRIME HT 280 4 55 35 4400 4000 PRIME HT 240 2 50 35 4300 4000 PRIME HT 1 280 3 50 35 4100 3500 PRIME HT 1 240 2 55 35 4500 4000 PRIME HT 1 120 3 4 40 40 4000 3350 Table 3 TABLE 3 SETTING PARAMETRES 608 AND 611 Proceed as follows to display boiler parameters or outdoor temperature on the front panel display 1 Turn the control knob 6 figure 1 fully anti clockwise to it minimum ...

Page 26: ...speed in rpm x 100 reserved for service engineers A4 central heating water output setpoint temperature in C A5 flue control NTC temperature A6 diagnostic information A7 not used A8 manufacture information A9 manufacture information Figure 22 0402_2503 5 seconds 4 To exit INFO mode simply turn control knob 6 fully anti clockwise see step 1 above and repeat step 2 NOTE When you exit INFO mode the A m...

Page 27: ...itions turn selector 1 figure 1 to R for at least 1 second Water pressure switch This device ensures that the main burner only ignites if water pressure in the system is above 0 5 bar Pump overrun The electronic control system keeps the pump operating for 3 minutes in central heating mode after the room tempe rature thermostat has switched off the main burner Frost protection device Boilers electro...

Page 28: ...to the comburant air inlet duct to check possible combustion products circulation in case of coaxial ducts The exhaust flue duct test point allows measurements of the following combustion products temperature concentration of oxygen O2 or alternatively of carbon dioxyde CO2 concentration of carbon monoxyde CO The comburant air temperature must be measured at the test point connected to the air inle...

Page 29: ...UE SWEEP mode do not turn knob 6 from its initial position or you will enter calibration mode in stead see section 16 1 3 Flue sweep mode remains active for 20 minutes To exit FLUE SWEEP mode before this time simply turn knob 7 figure 1 The function also stops if the central heating MAX SETPOINT temperature is reached see section 16 1 point 4 This is a high static head pump fit for installation on a...

Page 30: ...off its seat Figure 25 Figure 25 DHW heat exchanger securing screws flow sensor 0402_2515 To purge the exchanger and or the DHW system we suggest the use of Cillit FFW AL or Beckinser HF AL For specific areas where water hardness exceeds 20 F 1 F 10 mg of calcium carbonate per one litre of water we recommend you install a polyphosphate metering device complying with the applicable regulations in the...

Page 31: ... the boiler operates at peak efficiency the following checks must be performed every year check on the appearance and tightness of the gas and combustion circuit gaskets check on the condition and position of the ignition and flame sensing electrodes see section 19 check on the condition of the burner and its fixing to the aluminium flange check for any dirt in the combustion chamber Use a vacuum clea...

Page 32: ...Maximum central heating PWM 544 ZqNach Pump overrun time s 180 545 ZBreMinP Minimum burner pause time s in central heating mode 180 555 0 KonfigRG1 Activation of Chimney Sweep Calibration Function via QAA73 OFF OFF not active ON active 555 1 KonfigRG1 Legionella Function for Hydraulic System 2 ON with DHW storage tank OFF not active ON active 555 2 KonfigRG1 Type of water switch see paragraph 27 X400...

Page 33: ...ow rate limiter 10 pressure relief valve 11 manometer 12 boiler drain point 13 pump and air separator 14 automatic air vent 15 plate type DHW heat exchanger 16 gas valve 17 fan 18 gas diaphragm 19 mixer with venturi 20 flue water exchanger 21 air gas mixture header 22 flame detector electrode 23 main burner 24 ignition electrode 25 NTC flue sensor 26 coaxial fitting 27 expansion vessel 28 central heat...

Page 34: ...r separator 14 automatic air vent 16 gas valve 17 fan 18 gas diaphragm 19 mixer with venturi 20 flue water exchanger 21 air gas mixture header 22 ignition electrode 23 main burner 24 ignition electrode 25 NTC flue sensor 26 coaxial fitting 27 expansion vessel 28 105 C overheat thermostat 29 central heating NTC sensor 30 siphon 31 water pressure switch 32 3 way valve motor 33 three way valve 34 automa...

Page 35: ...R OUTDOOR TEMPERATURE SENSOR IGNITER IGNITION ELECTRODE WATER PRESSURE SWITCH DOMESTIC HOT WATER NTC SENSOR THREE WAY VALVE CENTRAL HEATING PROGRAMMER PUMP BOILER FRAME EARTH TERMINAL BOARD Summer Winter SELECTOR RESET DOMESTIC HOT WATER PRIORITY SENSOR CABLES COLOURS C light blue M brown N black R red G V yellow green B white G yellow FLUE SENSOR 28 ILLUSTRATED WIRING DIAGRAM PRIME HT 240 HT 280 ...

Page 36: ...LVE CENTRAL HEATING PROGRAMMER PUMP BOILER FRAME EARTH TERMINAL BOARD Summer Winter SELECTOR RESET CABLES COLOURS C light blue M brown N black R red G V yellow green B white G yellow PROVISION FOR OUTDOOR TEMPERATURE SENSOR FLAME DETECTION ELECTRODE 230 V ROOM TEMPERATURE THERMOSTAT CENTRAL HEATING NTC SENSOR FLUE SENSOR 28 1 ILLUSTRATED WIRING DIAGRAM PRIME HT 1 120 HT 1 240 HT 1 280 GAS VALVE 05...

Page 37: ...37 INSTRUCTIONS FOR THE INSTALLER ...

Page 38: ...38 INSTRUCTIONS FOR THE INSTALLER ...

Page 39: ...39 INSTRUCTIONS FOR THE INSTALLER ...

Page 40: ... pressure bar 0 5 0 5 0 5 0 5 0 5 0 5 DHW system max pressure bar 8 8 8 DHW system min dynamic pressure bar 0 2 0 2 0 2 DHW system min output l min 2 2 2 2 2 2 DHW production at T 25 C l min 13 8 16 1 18 9 DHW production at T 35 C l min 9 8 11 5 13 5 Specific output D l min 10 9 12 9 15 3 Heating circuit temperature range C 25 80 25 80 25 80 25 80 25 80 25 80 Domestic hot water temperature range C ...

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