Technical information Assembly instructions

EN Technical information Assembly instructions Hoval CompactGas (1000-2800) for natural gas and liquid gas Hoval products must be installed and commissioned only by appropriately qualifi ed experts. These instructions are intended exclusively for the specialist. Electrical installations may only be carried out by a qualifi ed electrician. Nominal output at 80/60 C and natural gas 1-CompactGas (1000) 1000 kw 1-CompactGas (1400) 1400 kw 1-CompactGas (1800) 1800 kw 1-CompactGas (2200) 2200 kw 1-CompactGas (2800) 2800 kw The gas boiler series Compact is suitable and approved for use as heat generator for water heating plants with permitted flow temperatures up to 110 C 1). They are designed for closed-circuit plants according to EN 12828. 1) see section Technical data 4 205 753 / 04-08/10 Subject to modifi cations

Table of contents 4 205 753 / 04 1. Safety notices 1.1 Key to symbols... 4 2. Important notices 2.1 Measures on receipt of the appliance... 5 2.2 Warranty... 5 2.3 Instructions... 5 2.4 Regulations, official approvals... 5 2.4.1 Germany... 6 2.4.2 Austria... 6 2.4.3 Switzerland... 6 3. Assembly 3.1 Installation, levelling... 7 3.2 Mounting the condensate drain... 9 3.3 Mounting the thermal insulation... 9 3.4 Mounting the cladding and the boiler control... 11 3.5 Mounting the side shutters... 13 3.5.1 Mounting the flexible side shutter (detail A,B,C)... 13 3.5.2 Mounting the fixed side shutter (detail D)... 13 4. Technical details 4.1 Description of the boiler... 14 4.2 Technical data... 15 4.3 Dimensions / Space required... 16 4.3.1 Dimensions... 16 4.3.2 Base size... 17 4.4 Flue gas and output diagrams... 18 4.4.1 Flue gas - output diagram... 18 4.4.2 Flue gas resistance... 18 5. Installation 5.1 Safety notices... 19 5.2 Requirements for boiler room... 19 5.3 Flue gas connection, flue gas pipe, dimensions of flue gas pipe... 19 5.4 Installing the burner... 21 5.5 Hydraulic connection... 21 5.5.1 Pressure maintenance... 21 5.5.2 Hydraulic connection... 21 5.5.3 Hydraulic schematic... 22 5.6 Gas connection... 22 5.7 Electrical connection... 23 6. Commissioning 6.1 Safety notices... 24 6.2 Charging with water... 24 6.3 Water quality... 25 6.3.1 Heating Water... 25 6.3.2 Filling and replacement water... 25 6.4 Venting the gas pipes... 26 6.5 Handing over the plant to the operator... 26 6.6 Record - Activation of screed function... 27 2

4 205 753 / 04 Table of contents 7. Maintenance 7.1 Information for combustion controller/chimney sweep regarding emission monitor key...29 7.2 Safety notices... 30 7.3 Venting... 30 7.4 Replenishing water... 30 7.5 Cleaning... 31 8. Overview of settings 8.1 Table of parameters... 32 8.2 Fault Reporting overview TopTronic T... 42 3

Safety notices 4 205 753 / 04 1. Safety notices i The plant must only be commissioned when all relevant standards and safety regulations have been fulfilled. For test operation at least the following conditions must be met: - safety valve installed (closed-circuit plant) - control unit in operation (connected to mains electricity) - sensor for safety temperature limiter connected (= boiler temperature sensor) - plant filled with water - expansion tank connected - flue gas outlet with flue gas pipe connected to chimney - burner preset 1.1 Key to symbols Tools: Shows which tools you will need for the following steps. Instructions for action: Here you will need to undertake specific action. Result: Shows the result to be expected from the action. i Notice: Supplies important information. Safety notices: Warns of potential danger of injury. Caution notices: Warns of potential damage to machines and plants. Supplies important information. Reference to standards and guidelines. 4

4 205 753 / 04 Important information 2. Important notices 2.1 Measures on receipt of the appliance i As soon as the boiler is delivered, perform a visual check. If damage should be detected, undertake the necessary steps as detailed in the delivery contract. The costs for repairs will be borne by the respective risk taker. 2.2 Warranty i The following defects are not covered by warranty: - non-observance of these instructions - non-observance of the handbook - faulty installation - non-approved alterations - improper treatment - undue force being applied - contaminated operating media (gas, water, combustion air) - corrosion through halogen compounds (e.g. paints, adhesives, solvents) - unsuitable chemical additives in the heating water - corrosion through non-compliance with the water quality requirements 2.3 Instructions i All the instructions which you will need for the operation of your plant can be found together in the Hoval plant handbook. Please keep all instructions in a safe and accessible place! In some exceptional cases the instructions are to be found with the specific components! Further sources of information: - Hoval catalogue - standards and regulations 2.4 Regulations, official approvals i For the installation and operation of the plant the standards and regulations listed in sections 2.4.1 to 2.4.3 (see page 6) must be observed. 5

Important information 4 205 753 / 04 2.4.1 Germany DIN EN 12831 Heating systems in buildings procedure for calculating the standard heating load. DIN EN 13384 Exhaust gas systems thermal and fluid dynamic calculation methods. DIN EN 12828 Heating systems in buildings - planning of hot water systems. DIN 4756 Gas-fired systems: design, construction and technical safety requirements, planning and execution (for operation with gas burners). DIN 18160 House chimneys, requirements, planning and execution. TRD 702 Steam boiler plants with calorifiers of the group II. TRD 721 Safety equipment to safeguard against excess pressures / safety valves / for group II steam boilers. VDI 2035 Prevention of damage by corrosion and the formation of scale in hot water systems. DIN 57 116 / VDI 0116 Electrical equipment for firing systems. (VDE regulation). For further standards applying to Germany see attachment N-430 020. 2.4.2 Austria OENORM 12831 Heating installations in buildings procedure for calculating the standard heating load OENORM 13384 Exhaust gas systems procedure for heat and technical gasflow calculations. OENORM 12828 Heating systems in buildings: planning of hot water heating systems. ÖNorm B 8130 Open hot water, systems, safety installations. ÖNorm B 8131 Closed-circuit hot water systems, safety, construction and testing regulations. ÖNorm B 8133 Water heating systems, technical safety requirements. ÖNorm B 8136 Heating systems, space requirements and other building requirements. ÖNorm M 7515 Calculation of chimney dimensions; definition of expressions, calculation procedures. ÖNorm H 5171 Heating systems technical building requirements. ÖVGW TR gas 2.4.3 Switzerland SN EN 12831 Heating installations in buildings procedure for calculating the standard heating load. SN EN 13384 Exhaust gas systems procedure for heat and technical gasflow calculations. SN EN 12828 Heating systems in buildings: planning of hot water heating systems. VKF-Association of Cantonal Fire Insurers. Regulations of the fire police. SVGW Schweiz. Swiss Gas and Water Federation. SNV 27 10 20 Aeration and ventilation of the boiler room. SWKI 88-4 Water treatment for heating, steam and airconditioning plant. SWKI 80-2 Technical safety regulations for heating installations. KRW Corrosion caused by halides. KRW/VSO/FKR Electrical connections on heating boilers and burners ready to plug in. and further regulations and standards issued by CEN, CEN ELEC, DIN, VDE, DVGW, TRD and government authorities. The regulations issued by local buildings authorities, insurers and chimney sweeps must also be observed. Where gas is used as a fuel the regulations of the local gas supplier must be observed. An official licence may be needed. 6

4 205 753 / 04 Assembly 3. Assembly 3.1 Installation, levelling No special foundation plate is required for installing the boiler (sufficient supporting capacity for the boiler must be guaranteed); see section Technical data for operational weight. In the case of boiler installation in the domestic domain, vibration absorbers are to be mounted under the boiler plinth rails. Space required for mounting the thermal insulation and sheet metal cladding: is to be at least 40 cm laterally, to the left and right side of the boiler. If the distance from walls is less, the boiler must first be completely thermally insulated and cased before being placed into the installation position designated. Levelling The upper edge of the boiler water jacket (boiler longitudinal axis) must be levelled by means of a spirit level until it is aligned exactly horizontally. Mount the door liner (door cladding) before installing the burner (for heating trials, with the boiler not yet thermally insulated). 7

Assembly 4 205 753 / 04 Delivery from factory-boiler door opens to the right However the boiler door hinges can be changed over to enable the door to be opened to the left. This can be useful when space is limited. Boiler door hinges may only be changed over by Hoval Service! The boiler door must be closed when changing over the hinges - procedure: 1. For types 1800,2200,2800 only: Dismantle support for door positioning 5 1. Tighten the top and bottom lock nuts (1 Figure 1) towards the swing-out flange (manually). 2. Mount flange nuts (2 Figure 1) with the hole diagonally on the new opening side, i.e., - change over the bottom left and top right flange nut and - change over the top left and bottom right flange nut. 3. Open boiler door after removing flange nuts (2 Figure 2) and turn back locknuts 3 approx. 1-2cm. As a result, the boiler door is pressed against the sealing gasket without hindrance. 4. Mount the burner plug connector on the other side. The cable must not contact any hot parts. 5. Mount door rabbet 4 on the other side and adjust it (angle of door opening 90 ). 6. For types 2200, 2800: Remount support for door positioning 5 on the other side, readjust if necessary resp. level boiler door first! After changing over the hinges it might be necessary to align (level) the boiler door! (Hanging boiler door) Procedure: 1. Open boiler door approx. 10cm. 2. Raise boiler door (20-30mm) by means of a mechanical jack (or jack) by slightly loosening flange nuts 2. Do not loosen flange nuts entirely nor remove them as the boiler door might fall down! 1. After leveling the boiler door, retighten flange nuts 8 securely. 4 3 2 8 Figure 1 8 2 1 Figure shows situation as delivered (boiler door opens to the right) 3 Figure 2 1 5 Position mechanical jack Figure shows situation after transformation (boiler door opens to the left) 5

4 205 753 / 04 Assembly 3.2 Mounting the condensate drain Figure 3 The consensate drain is to be mounted according to (Figure 3a). 3.3 Mounting the thermal insulation 1. Wrap the insulating mats (1,1a) around the boiler body. The insulating mat (1a) has to be applied in such a way that the large recess (1b) is located at the back. 2. Fix the insulating mats (1/1a) with plastic straps and strap fasteners (2a): - Tension springs (2) serve for additional fixing (2b) - Do not overtighten the straps (reduced insulation effect) 3. Place insulating mats (3) on the boiler rear panel and attach them to the insulating mat of the boiler body using tension springs. 4. Wrap the insulating mat (4) around the flue gas collector ring and fix it below with retaining discs (Figure 4). Figure 3a 5. Wrap the insulating mat (5) around the flue gas collector and fix it using retaining discs (Figure 4). 6. Place insulating mats (6,7,8) on the boiler front and fix them with retaining discs (Figure 4). i Notice The mounting of the insulating mats (6,7) may be facilitated by cutting them through at the narrowest section. 7. Attach the Compact Gas (1800-2800) insulating mats (8a) to the boiler door without the use of retaining discs. The remaining insulating mats (20a,24 Figure 8) are fixed with the mounting of the cladding (see page 10). Figure 4 9

Assembly 4 205 753 / 04 5 7 8 4 6 1 1b 1a 2b 2a 2 3 2a Figure 5 8a Insulating mat may be partitioned 10

4 205 753 / 04 Assembly 3.4 Mounting the cladding and the boiler control 10. Fix bolts (20, Figure 8) (Compact Gas (1800-2800): incl. distance spacers) at the boiler door using hexagonal nuts and U-washers, then insert insulating mat (20a) into boiler door cladding (20b) and mount onto boiler door (Compact Gas (1800-2800): 2 parts boiler door claddings - mount inferior first). 11. Integrate burner plug (21) into the left (resp. right) side panel and lead burner cable upwards (cable routing according to Image 8). Insert right and left side panels (22) into retaining bracket (32), attach 1 C-Clip each (29) to the front of the side panels. 12. Insert rear panels (23) into folded edges (22) (Compact Gas (2800): 6 pieces) of side wall. 13. Insert 2 insulating mats (24) left and right in longitudinal direction (to prevent vertical air circulation). 14. Mount 2 special screws (14, Figure 6a, 8) with locknut on the side panel. These are used for mounting the control box. 15. Remove control box cover plate (11, Figure 6a). The control panel (12a, Figure 6b) must be turned. For this purpose the pressure lock sleeves (12b, compress and pull away) as well as the earth screw and serrated lock washer (12d) must be removed. Attach the control box (12, Figure 6b, 8) with the cut-out for special screws to the cladding side panel (22, Figure 8) and secure with 2 self-tapping screws Ø 3,5 x 6,5 and serrated lock washers (12c, Figure 6b). 16. Pull capillaries with immersion sensors (17, Figure 7) through the opening (15, Figure 6a), put it into immersion sleeve (18, Figure 7) up to the stop and secure with retaining spring (16, Figure 7) Attention: the capillaries must not be kinked! 17. Lead burner plug (21) to the control and plug in. 18. Mount cover plate (11) with 3 self-tapping screws Ø 3,5 x 6,5 and serrated lock washers (13, Figure 6a). 19. Place walkable cover in proper sequence 26, 27, 28 on the bracket (32), fix front cover (30) using 2 self-tapping screws (31) Ø 4,8 x 50 and level with height-adjustable elbow (34). 20. Affix rating plate and retainer for handbook (33) to the side. 21. Mounting the side shutter see page 13. 14 15 Figure 6a 13 11 12a 12b 12c 12d 12 12c 180 Figure 6b Figure 7 18 16 17 11

Assembly 4 205 753 / 04 31 31 27 29 22 26 20 24 30 34 25 Compact Gas (1800-2800) cutaway view 20b 20a 22 Figure 8 21 33 28 32 12 23 23 22 14 12

4 205 753 / 04 Assembly 3.5 Mounting the side shutters The cladding shutter system serves for covering the gap between the boiler door and the side wall. The shutter at the boiler door hinge side must be flexible. 3.5.1 Mounting the flexible side shutter (detail A,B,C) 1. Mount hinges (40) on top and bottom of front side wall using self-tapping screws Ø 3,5 x 9,5. 2. Mount side shutter (41) on right half of hinge using 2 pieces of cross-head screws (42) and distance spacers (44), use 1 piece each for top and bottom (detail A,B). Secure against extraction using two hexagonal locknuts (41a). -! Do no clamp the hinge! 3. Mount magnets (46) on top and bottom hole of side ends (41) using hexagonal nut M10 (47), U-washer (48) and hexagonal screw M4 x 10 (49) (detail C). 3.5.2 Mounting the fixed side shutter (detail D) 4. Open boiler door, mount hinges (40) on top and bottom of front side wall using self-tapping screws Ø 3,5 x 9,5. 5. Mount side shutter (41) according to figure on top and bottom using 4 pieces of cross-head screws (42,43) and distance spacers (44), fix with hexagonal nuts (45). 45 incline boiler side B 42 44 C 46 47 48 49 41 40 41a D A 42 43 42 44 44 41 44 40 40 45 13

Technical information 4 205 753 / 04 4. Technical details 4.1 Description of the boiler The Hoval CompactGas is a low-pollution, energy saving gas boiler. The Hoval CompactGas has a horizontal combustion chamber as primary heating area and a secondary heating area consisting of alufer composite tubing. The CompactGas is designed for operation using natural gas and liquid gas. The construction principles are displayed in the following diagram. 14

4 205 753 / 04 Technical information 4.2 Technical data Typ (1000) (1400) (1800) (2200) (2800) Nominal output at 80/ 60 C kw 1000 1400 1800 2200 2800 Range of output at 80/ 60 C kw 300-1000 420-1400 540-1800 660-2200 840-2800 Burner input maximum kw 1037 1458 1865 2280 2901 Maximum boiler operating temperature 1 C 105 105 105 105 105 Minimum boiler operating temperature C 75 75 75 75 75 Minimum boiler return temperature C 35 35 35 35 35 Safety temperature limiter setting (water side) 2 C 120 120 120 120 120 Operating/test pressure bar 6/9 6/9 6/9 6/9 6/9 Boiler efficiency at full load at 80/ 60 C (net calorific value / gross calorific value) % 96,4/86,9 96,0/86,5 96,5/87,0 96,5/87,0 96,5/87,0 Efficiency at partial load 30% (EN 303) (net calorific value / gross calorific value) % 97,4/87,7 97,3/87,7 97,4/87,7 97,5/87,8 97,5/87,8 Standard efficiency (DIN 4702 part 8 75/ 60 C) (net calorific value / gross calorific value) % 97,4/87,8 97,1/87,5 97,5/87,9 97,5/87,9 97,5/87,9 Stand-by loss qb at 70 C Watt 1000 1200 1350 1550 1800 Flue gas temperature at nominal output at 80/ 60 C C 101 102 99 93 92 Flue gas resistance at nominal output 10,5% CO 2 natural gas 500 m over sea level (Tolerance ± 20%) mbar 4.8 4,7 5,7 6,5 7,2 Flue gas mass flow at nominal output 10,5% CO 2 natural gas kg/h 1623 2271 2923 3571 4546 Flow resistance boiler 3 z-value 0,012 0,003 0,003 0,003 0,002 Water flow resistance at 20 K mbar 22,0 10,8 17,9 26,7 28,8 Water flow volume at 20 K m³/h 42,9 60,0 77,1 94,3 120,0 Boiler water contenct Litre 1130 1580 2020 2534 2844 Insulation thickness boiler body mm 80 80 80 80 80 Weight (incl. casing) 6 bar kg 2100 2794 3500 4455 5567 Weight (without casing) 6 bar kg 1960 2654 3200 4105 5167 Heating surface m² 44,23 68,49 89,51 117,26 142,34 Combustion chamber volume Ø-inside x length mm 684/1985 830/2180 830/2301 830/3076 930/3272 Combustion chamber volume m³ 0,729 1,179 1,244 1,663 2,222 Dimensions see Dimensions 1 Limited by the boiler control T2.2 to 90 C resp. U3.2 and T0.2 to 105 C. 2 Maximum safety temperature for boiler control T2.2: 110 C resp. U3.2 and T0.2: 120 C. 3 Flow resistance boiler in mbar = volume flow (m 3 /h) 2 x z 15

Technical information 4 205 753 / 04 4.3 Dimensions / Space required 4.3.1 Dimensions (all dimensions in mm) Type a b c d e f g h i k (inside) (1000) 1280 1330 1384 710 310 350 400 6xM12 15 353 (1400) 1480 1530 1584 810 330 400 450 6xM16 15 403 (1800) 1580 1630 1684 860 330 400 450 6xM16 15 453 (2200) 1580 1630 1684 860 330 400 450 6xM16 15 453 (2800) 1680 1730 1784 910 330 400 450 6xM16 15 503 Type l m n o p q r s t u v w (1000) 1646 2430 240 2130 438 1210 170 1487 103 1564 500 31 (1400) 1886 2600 240 2300 438 1350 170 1708 124 1780 550 31 (1800) 2038 2790 257 2438 438 1350 187 1808 124 1884 550 48 (2200) 2038 3529 257 3213 438 2125 187 1808 124 2659 550 48 (2800) 2188 3745 257 3430 638 2100 187 1908 124 2799 550 48 1 Flow (1000) DN 125, PN6 (1400) DN 150, PN6 (1800) DN 150, PN6 (2200) DN 150, PN6 (2800) DN 200, PN6 2 Return (1000) DN 125, PN6 (1400) DN 150, PN6 (1800) DN 150, PN6 (2200) DN 150, PN6 (2800) DN 200, PN6 3 Flue gas outlet 4 Draining R 1½" 5 Condensate drain D31/25mm (on both sides) 6 Electrical connection (on both sides) 7 Electrical box 8 Sleeve Rp ¾" with immersion sleeve for boiler temperature sensor 16

4 205 753 / 04 Technical information 4.3.2 Base size Dimensions without insulation and casing Boiler incl. boiler door, outlet without flue gas collector (dimensions in mm) Type a b c d e f g h i k (inside) (1000) 1280 1646 1363 710 310 350 400 6xM12 15 353 (1400) 1480 1886 1563 810 330 400 450 6xM16 15 403 (1800) 1580 2038 1663 860 330 400 450 6xM16 15 453 (2200) 1580 2038 1663 860 330 400 450 6xM16 15 453 (2800) 1680 2188 1763 910 330 400 450 6xM16 15 503 Type l m n o p q r s t DN (1000) 80 2423 209 2130 438 1210 96 1487 180 125 (1400) 80 2593 209 2300 438 1350 112 1708 200 150 (1800) 80 2731 209 2438 438 1350 112 1808 200 150 (2200) 80 3506 209 3213 438 2125 112 1808 200 150 (2800) 80 3723 209 3430 638 2100 112 1908 200 200 Combustion chamber dimensions Type A B C D E (1000) 219 1748 1985 684 189 (1400) 219 1896 2180 830 189 (1800) 219 1998 2301 830 189 (2200) 219 2773 3076 830 189 (2800) 219 2941 3272 930 189 17

Technical information 4 205 753 / 04 4.4 Flue gas and output diagrams 4.4.1 Flue gas - output diagram 1000 1400 1800 Flue gas temperature ( C) 2200 2800 Nominal output (kw) kw = Boiler output C = Flue gas temperature on clean surface, boiler flow temperature 80 C, return temperature 60 C (in accordance with DIN 4702). Operated with natural gas H, λ = 1,15 with max. bruner output (CO 2 natural gas H = 10,5 %) A reduction of the boiler water temperature of -10 K causes a reduction of the flue gas temperature of approx. 6-8 K. A modification of lambda λ of ± 0,09 causes a modification of the flue gas temperature of ± 8 K. 4.4.2 Flue gas resistance 2200 2800 1800 Flue gas resistance (mbar) 1000 1400 18 Boiler output (kw)

4 205 753 / 04 Installation 5. Installation 5.1 Safety notices Caution! Danger of injury through sharp edges. Handle the cladding panels with care and avoid contact with sharp edges. 5.2 Requirements for boiler room Observe the local and national building regulations regarding boiler rooms. Observe the local and national regulations regarding ventilation and deaeration of boiler rooms. Gas boilers may not be installed in rooms which may contain halogen compounds which may combine with the combustion air (e.g. laundry rooms, drying rooms, workshops, hairdressing salon). Halogen compounds may occur in, amongst others, cleaning, de-greasing and solvent substances, adhesives and bleaching agents. Always make sure that there is an adequate supply of fresh air to the boiler room, to ensure that the combustion air supply necessary for all the firing systems operated can flow in without hindrance and that no oxygen deficiency occurs for the operating personnel. The binding values for the size of intake air apertures are not usually stated in the relevant regulations, it is laid down only that the partial vacuum in the boiler room must not exceed 3 N/m 2. To comply with this requirement, an air supply cross section of 500 cm 2 is to be provided up to a nominal heat output of 1000 kw. With rectangular apertures the side ratio is not to exceed 1.5 : 1 and an appropriate supplement is to be made with grilles to ensure that the free cross section reaches the above values. In Austria the ÖNorm H 5171 additionally stipulates a flue air aperture. This must have a minimum cross section of 180 cm 2 up to a nominal heat output of 100 kw. The cross section is to be increased by 1 cm 2 for each additionnal kw. 5.3 Flue gas connection, flue gas pipe, dimensions of flue gas pipe To guarantee economic and fault-free operation, boiler and chimney must be mutually adapted to create a functional unit. Moisture insensitive and acid resitant chimneys must be provided for operation with CompactGas. Renovation, respectively chimney cross section adjustment may be necessary with existing chimney installations, according to the instructions of a chimney specialist. 19

Installation 4 205 753 / 04 The function of the chimney, i.e. the production of the necessary delivery pressure is basically dependent on: a) the type (nature) of the chimney (thermal insulation, interior surface roughness, sealing etc) b) the connection of the boiler to the chimney according to specification c) the correct chimney cross section dimensioning. The national regulations must be observed. ref. a) Chimneys according to EN 13384, part 1/2, execution types I and II are appropriate for modern firing systems (advice from the chimney specialist is necessary). Pay attention to the flue gas temperature at nominal output, see section Technical data. ref. b) The condensate accumulating in the flue gas pipe must not flow back to the boiler.a condensate trap (Figure 9) must therefore be installed at the flue gas outlet (not included in the scope of delivery). condensate trap Figure 9 Normally only one heat generator may be connected to the chimney! If the integration of a transition element from the boiler flue gas outlet to the chimney inlet is vom from boiler zum to chimney Kessel Schornstein necessary, it should be executed as a slender cone. ref. c) Dimensioning of chimney cross section. The cross sections are to be calculated for boilers without delivery pressure demand according to EN 13384. Take into account the local, special situation (position of the house on a slope, chimney position, roof pitch, shape of the chimney mouth etc.)! In Switzerland, take note of SIA recommendation 384/4! In Austria the calculation is carried out according to ÖNorm M 7515. i The values for calculation can be obtained from the table in section Technical data. 20

4 205 753 / 04 Installation 5.4 Installing the burner Burner installation dimensions may be obtained from point 4.3.2. The burner is mounted on the boiler door by means of the seal and screws. On installing, comply with the guidelines and instructions for mounting the burner on the heat generator. Use only burners tested according to EN 676 resp. EN 267 The space between the burner pipe and the boiler door is to be insulated with the insulating wool supplied. With gas burners the burner housing weight must be directly supported by a strut to the floor. Cooling of boiler sight glass For cooling and cleaning the sight glass a cooling line must be mounted leading from the boiler to the sight glass. The line is executed either as a hose or as a cu pipe. Sound insulation Gas pipes are to be installed so that no vibrations can be transferred to the building. The burner may be cased with a sound absorbing hood. It is recommended to mount sound absorbers downstream of the boiler in the flue gas pipe. 5.5 Hydraulic connection In accordance with EN 12828:2003 the following safety devices are integrated in the boiler: - temperature regulator - temperature measuring device TBmax + 20% - safety temperature limiter A complete failure of the water circuit must be taken into account plant-specifically according to DIN EN 12828. In Germany, a low water protection must be provided. 5.5.1 Pressure maintenance A pressure expansion tank sized appropriately for the heating plant, water volume and head has to be installed on site. 5.5.2 Hydraulic connection The minimum return temperature has to be ensured by constant return flow control. A minimum water circulation is not necessary. P Dies ist ein unerlaubter We g! Gehen Sie einen Schritt zurück oder löschen Sie dieses Sha pe! Sie haben die Möglichkeit ein nceu om e s ps ahct ape Gas zu nehme n!!! hovhovalhovalhova lhovalhovalhovalho valhovalhovalhoval hovalhovalhovalho valhovalhova valhoval hovalhova RLF ZUP YKR 21

Installation 4 205 753 / 04 5.5.3 Hydraulic schematic Important notices: The examples stated below are principle schematics which do not contain all the details for installation. The installation must be done according to the local conditions, dimensioning and regulations. For underfloor heating, a flow temperature monitor must be built in. Shut-off devices to the safety valve (pressure expansion tank, safety valve, etc.) are to safe against unintended closing! Example CompactGas (1000-2800) Gas boiler with - Free-standing calorifier - Wall distributor with 3 heating circuits AF 1 1 TopTronic T TopTronic T VF1 B1 VF2 B1 VF3 B1 RS-T RS-T RS-T WW T T T T T T Dies ist ein unerlaubter Weg! Gehen Sie einen Schritt zurück oder löschen Sie dieses Shape! Sie haben die Möglichkeit ein neues CompactGas Shape zu nehmen!!! hovhovalhovalhova lhovalhovalhovalho valhovalhovalhoval hovalhovalhovalho valhovalhova valhoval hovalhova RLF P ZUP YKR YK1 M MK1 MK2 YK2 M MK3 YK3 M SLP KW SF Dies ist ein unerlaubter Weg! T Gehen Sie einen Schritt zurück oder löschen Sie dieses Shape! Sie haben die Möglichkeit ein neues Shape zu nehmen!!! hovhovalhoval hovalhovalhov alhovalhovalho valhovalhovalh ovalhovalhoval hovalhovalhov alhovalhovalho valhovalhovalh ovalhovalhoval hovalhovalhov alhovalhovalho valh MK1,2,3... Pump mixing circuit 1,2,3,... SLP... Calorifier loading pump ZUP1,2,3... Feed pump 1,2,3,... YK1,2,3... Actuator mixer 1,2,3... YKR1,2,3... Actuator return mixer 1,2,3,... B1... Flow temperature monitor (if required) P... Pressure switch AF... Outside sensor SF... Calorifier sensor VF1,2,3... Flow sensor 1,2,3,... RLF... Return sensor RS-T/RFF-T... Room station / Remote control (if several devices are connected in parallel) Notice! The minimum boiler temperature of 75 C as well as the minimum return temperature of 35 C must never fall below the stated value in any of the operating status given (see technical data). 5.6 Gas connection Danger! Danger of explosion if there are leaks in the gas fittings. After installing the boiler, check all gas pipes and fittings for leaks. For gas connection see diagrams in section 4.3.1. Lead the gas connection straight towards the rear! After installation check for leaks. 22

4 205 753 / 04 Installation 5.7 Electrical connection i i i The electrical connection has to be carried out by a qualified and authorised electrician. The connection diagram is to be found in the boiler control box. The wiring diagram is supplied separately. Cables to be connected may be lead laterally along the boiler into a cable channel forward towards the control box. A removable, narrow covering is located on the control box. The cables may be lead through the cover opening into the control box. For Austria and Germany: A connection diagram is supplied with the boiler control. An all-pole main switch must be installed in the power supply lead with at least 3 mm contact gap. For Switzerland: The plant specific electrical plan must be followed when making the electrical connection! EMC safety measures Lay mains and sensor resp. bus lines separately for control devices with separate mains power supply. i Use cable channels with separators. The mains supply for the heating plant (boiler - switching block - controller) must be wired as an independent electrical circuit. No other power consuming items (lights, sockets,...) may be included in the same circuit. The outside sensor may not be installed in the vicinity of transmission and receiving devices (garage door opener, amateur radio antennae, alarm systems...). Recommended cable cross-sections: type of cable Querschnitt Länge mains power cables min. 1,0 mm² unlimited m low voltage cables (sensors) min. 0,5 mm² max. 50 m data bus cables (shielded) 2 x 0,6 mm² max. 100 m 23

Commissioning 4 205 753 / 04 6. Commissioning i i i After filling the plant, thoroughly vent the system and check the water side for leaks. During the first commissioning of the plant the correct functioning of all safety and control devices must be verified. The operator must be thoroughly instructed on the operation and servicing of the plant. Where the supply may be expected to contain large quantities of dust (e.g. building site) the combustion air must be filtered. It is very important that gas flow pressure is controlled and the CO 2 value is correctly set. 6.1 Safety notices i Caution! Danger of injury through sharp edges. Handle the cladding panels with care and avoid contact with sharp edges. Caution! Danger of injury to unauthorised personnel. The first commissioning of the plant, maintenance and servicing work may only be carried out by qualified personnel or by Hoval customer service personnel. Caution! The plant may be damaged through the use of unsuitable liquids. The water used must be of drinking water quality (see point 6.3). 6.2 Charging with water Only authorised persons may charge the plant with water for operation. The European Standard EN 14868 and the Directive VDI 2035 must be observed (see point 6.3). i Open stop valves in flow and return flow circuits. Connect hose to filling valve. Slowly fill the plant with water. Monitor the water level via the manometer. i Use only chemical additives which have been confirmed to be suitable by the chemical supplier. Antifreeze may only be added to a maximum of 25% and at least to the extent specified by the manufacturer. The antifreeze and anti-corrosion concentration must be checked at least once per year. When replenishing antifreeze or anti-corrosion agents the same product should be used. When changing over to operation without antifreeze or anti-corrosion agents the plant must be thoroughly flushed several times before being refilled. 24

4 205 753 / 04 Commissioning 6.3 Water quality 6.3.1 Heating Water Heating Water The European Standard EN 14868 and the directive VDI 2035 must be observed. In particular, attention must be paid to the following stipulations: Hoval boilers and calorifi ers are designed for heating plants without signifi cant oxygen intake (plant type I according to EN 14868). Plants with - continuous oxygen intake (e.g. underfloor heating systems without diffusion proof plastic piping) or - intermittent oxygen intake (e.g. where frequent refilling is necessary) must be equipped with separate circuits. Treated fi lling and replacement water must be tested at least 1x yearly. According to the inhibitor manufacturer s instructions, more frequent testing may be necessary. A refi lling is not necessary if the quality of the heating water in existing installations (e.g. exchange of boiler) conforms to VDI 2035. The Directive VDI 2035 applies equally to the replacement water. New and if applicable existing installations need to be adequately cleaned and fl ushed befor being fi lled. The boiler may only be fi lled after the heating system has been fl ushed! Parts of the boiler which have con tact with water are made of ferrous materials. On account of the danger of stress cracking corrosion the chloride, nitrate and sulfate con tents of the heating water must not exceed 200 mg/l in total. The ph value of the heating water should lie between 8.3 and 9.5 after 6-12 weeks of heating operation. Filling and replacement water For a plant using Hoval boilers untreated drinking water is generally best suited as heating medium, i.e. as fi lling and replacement water. However, as not all drinking water is suitable for use as as fi lling and replacement water the water quality must fulfi l the standard set in VDI 2035. Should the mains water available not be suited for use then it must be desalinated and/or be treated with inhibitors. The stipulations of EN 14868 must be observed. In order to maintain a high level of boiler effi ciency and to avoid overheating of the heating surfaces the values given in the table should not be exceeded (dependent on boiler performance ratings - for multi-boiler plants rating of smallest boiler applies - and on the water content of the plant). The total amount of fi lling and replacement water which is used throughout the total service life of the boiler must not exceed three times the water capacity of the plant. Maximum filling capacity based on VDI 2035 Total hardness of the filling water up to... [mol/m 3 ] 1 <0,1 0,5 1 1,5 2 2,5 3 >3,0 f H <1 5 10 15 20 25 30 >30 d H <0,56 2,8 5,6 8,4 11,2 14,0 16,8 >16,8 e H <0,71 3,6 7,1 10,7 14,2 17,8 21,3 >21,3 ~mg/l <10 50,0 100,0 150,0 200,0 250,0 300,0 >300 Conductance 2 <20 100,0 200,0 300,0 400,0 500,0 600,0 >600 Boiler size of the individual boiler maximum filling quantity without desalination 50 to 200 kw NO REQUI- 50 l/kw 20 l/kw 20 l/kw 200 to 600 kw RE- 50 l/kw 50 l/kw 20 l/kw always desalinate over 600 kw MENT 1 Sum of alkaline earths 2 If the conductance in µs/cm exceeds the tabular value an analysis of the water is necessary. 25

Commissioning 4 205 753 / 04 6.4 Venting the gas pipes Observe the relevant regulations while venting the gas pipes Open the gas stop valve. Vent the gas pipe up to the gas armature. 6.5 Handing over the plant to the operator i The plant installer is responsible for providing instruction covering the entire plant. The following steps must be carried out when handing over the plant: Instruction in the operation and upkeep of the plant. Handing over of all instructions and documents. Providing notice to the operator that these instructions must always be kept available near the plant. Written confirmation of the instruction. Completion certificate see last page. 26

4 205 753 / 04 Commissioning 6.6 Record - Activation of screed function Cross where applicable; cut out record and fasten to the control during the active screed function. Minimum requirements for the activation of the screed function: Minimum age cement screed 21 days Minimum age calcium sulphate screed 7 days Flow temperature monitor installed and connected For newly laid screed - see Recommendation of the Federal Association of Radiant Panel Heating. Heating circuit selection for screed function and necessary parameter settings Mixing circuit 1 Mixing circuit 1 Start PRESS MC1/MC2 level Parameters 13,16 Activate Installer level (Code entry) > 3 sec: Access to level Select / Confi rm Set Confi rm End / Exit Required parameter settings: Parameter level Par. No Setting Description MIX.VALVE (1 or 2) 13... C Maximum fl ow temperature to be set MIX.VALVE (1 or 2) 16 1 2 3 Screed program to be set (for description see following page) 1 Function heating (duration: Starting day + 7 days) 2 Surface-ready heating (duration: Starting day + 18 days) 3 Function and surface-ready heating (duration: Starting day + 25 days) Direct heating circuit (possible only with H-Gen without minimum H-Gen temperature - e.g. condensing boiler) Start HC level Parameters 13,16 H-GEN level Parameter 4 PRESS Characteristic heating curve Enable HC Activate Installer level (Code entry) > 3 sec: Access to level Select / Confi rm Set Confi rm End / Exit Required parameter settings: Parameter level Par. No Setting Description - Key DK... Activate heating characteristic curve, above 0 = OFF, e.g. ~ 0.8 for FBH UNMIXED CIRC. 13... C Maximum fl ow temperature to be set UNMIXED CIRC. 16 1 2 3 Screed program to be set (for description see following page) 1 Function heating (duration: Starting day + 7 days) 2 Surface-ready heating (duration: Starting day + 18 days) 3 Function and surface-ready heating (duration: Starting day + 25 days) HEAT GENER. 4... C Max. H-Gen temperature to be set, set as for max. fl ow temperature (after termination of screed function reset max. temperature to the value required). If the screed function is activated for the unmixed circuit, all the other circuits (MC, DHW) are switched off. In alternation with the basic display of the controller, the activated screed heating is displayed giving some information about the remaining term in days screed - 18. Record Screed heating activated by:... Screed heating activated on:... Screed heating ends on:...... Date and signature 27

Maintenance 4 205 753 / 04 Parameter 16 Screed function (Parameter HC, MC1 or MC2) Example: Maximum fl ow temperature 40 C 1 Function heating T [ C] VLSol 55 45 35 25 maximal 55 C maximum 55 C einstellbar! set level! 1=Funktionsheizen Starting day + 7 days 1 = Function heating START 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 t DAYS [TAGE] - On the starting day and for the three following days at 25 C constantly - Subsequently for 4 days at the set fl ow maximum temp., but limited to a maximum of 55 C 2 Surface-ready heating T [ C] VLSol Starting day + 18 days 55 45 35 25 2=Belegreifheizen 2 = Surface-ready heating START 11 22 33 44 55 66 77 88 9910 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 DAYS t [TAGE] - On the starting day and on the 1st day constantly at 25 C, on each further day the demand value rises by 5 C until the maximum fl ow temperature is reached. Subsequently the temperature is lowered again in the same gradations until the low point of 25 C is reached. Example: Set fl ow maximum temp.: 40 C Starting day + 1st day: 25 C 2nd day: 30 C 16th day: 35 C 3rd day: 35 C 17th day: 30 C 4th day: 40 C 18th day: 25 C 5th - 15th day: constant heating with the max. fl ow temperature 3 Function heating and surface-ready heating Starting day + 25 days T [ C] VLSol 55 45 35 25 3=Funktionsheizen 3 = Function heating and und surface-ready Belegreifheizen heating START 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 [TAGE] t DAYS - Combination of 1 function heating and subsequently 2 surface-ready heating 28

4 205 753 / 04 Maintenance 7. Maintenance 7.1 Information for combustion controller/chimney sweep regarding emission monitor key All other control elements of the control unit are described in the operating instructions. The emission monitor key can also be used to change over to manual operating mode. Emission monitor key / Manual operation To protect under floor heating systems against invalid overheating during emission monitoring / manual operation it is necessary to implement appropriate safety measures (e.g. safety temperature limiter with pump switchoff). The duration of the emission monitoring is limited to 20 minutes and shall be restarted, if necessary. Scalding hazard due to hot water temperature, since the hot water temperature can exceed the temperature setpoint! Emissions metering PRESS SHORTLY % % Output reference / actual value Modulation display Immediate end REACTIONS for emissions metering - Time unit automatically 20 min. thereafter reverts - Boiler temperature - > maximum temperature restriction - The heating circuits and the calorifi ers regulate to their maximum temperature (at the direct heating circle only, if the warm water mode of operation is adjusted to parallel operation) Manual operation PRESS > 5 seconds Immediate end REACTIONS for manual operation - Set reference boiler temperature with button! - All heating pumps ON - Mixer without current - manual setting necessary! - Note the maximum permissible temperature of the fl oor heating! - The hot water temperature reaches the set DHW maximum temperature (expert level standard 65 C). 29

Maintenance 4 205 753 / 04 7.2 Safety notices Caution! Danger of injury through sharp edges. Handle the cladding panels with care and avoid contact with sharp edges. Caution! Danger of injury for unqualified personnel. Servicing and Cleaning may only be carried out by qualified personnel or by Hoval customer service personnel. 7.3 Venting Open all radiator valves. Heat up plant for at least 12 hours with a high flow temperature. Switch off boiler and wait for 5 minutes. Thoroughly vent the plant. 7.4 Replenishing water The European Standard EN 14868 and the Directive VDI 2035 must be observed (see point 6.3). i Replacement water has to be refilled if the pressure falls below the minimum plant pressure: Connect hose to water tap. Evacuate the air from the hose. Connect hose to filling and drainage valve. Replenish replacement water. 30

4 205 753 / 04 Maintenance 7.5 Cleaning Inadequate cleaning results not only in increased fuel consumption, but also shortens the service life of the boiler. The boiler must be cleaned by the chimney sweeper once a year. Switch off the main switch Remove burner plug and and cut off the fuel supply. Unscrew the hexagonal sealing nuts with hole (50, Figure 10) using the steel mandrel supplied. Attention: The sealing nuts without a hole must on no account be unscrewed. Open the boiler door and swing out burner. Visual check and detection of degree of pipe contamination (51). The pipes (51) must be cleaned even if minor contamination resp. incrustation has been detected. Thoroughly clean combustion chamber (Figure 11, 50) using a brush or spray. The second compartment (51) must be cleaned by means of a high-pressure cleaner (e.g. Kärcher, Figure 24) with a special nozzle (point jet nozzle, Figure 13) and hot water. Close boiler door and tighten screws firmly. Reconnect burner plug and start up the boiler to maximum operating temperature in order to dry the heating surfaces. Figure 10 50 51 50 Figure 13 Figure 11 Figure 12 31

Overview of settings 4 205 753 / 04 8. Overview of settings 8.1 Table of parameters Designation Factory Type of device: DHW: SW: Address: Surface operation Key : Regulator Setting range / 10 20 30 40 50 Setting values Heating curve HC OFF OFF, 0,20... 3,5 Heating curve MC1 1,0 OFF, 0,20... 3,5 Heating curve MC2 1,0 OFF, 0,20... 3,5 Daytime target temperature HC *) 20 C 5... 30 C *) Daytime target temperature MC1 *) 20 C 5... 30 C *) Daytime target temperature MC2 *) 20 C 5... 30 C *) Night-time target temperature HC *) 16 C 5... 30 C *) Night-time target temperature MC1 *) 16 C 5... 30 C *) Night-time target temperature MC2 *) 16 C 5... 30 C *) DHW target temperature 50 C 5... DHW-Max. *) Depending on the setting of system parameters 03 OPERATING MODE Remote operation/room stations Type Heating circuit Address HW SW 32

4 205 753 / 04 Overview of settings Table for Time programs DHW circuit Time program P1 Time program P2 Time program P3 Tag Cycle 1 Cycle 2 Cycle 3 Cycle 1 Cycle 2 Cycle 3 Cycle 1 Cycle 2 Cycle 3 from to from to from to from to from to from to from to from to from to Mo Tu We Th Fr Sa Su Direct circuit Time program P1 Time program P2 Time program P3 Tag Cycle 1 Cycle 2 Cycle 3 Cycle 1 Cycle 2 Cycle 3 Cycle 1 Cycle 2 Cycle 3 from to from to from to from to from to from to from to from to from to Mo Tu We Th Fr Sa Su Mixer Circuit 1 Time program P1 Time program P2 Time program P3 Tag Cycle 1 Cycle 2 Cycle 3 Cycle 1 Cycle 2 Cycle 3 Cycle 1 Cycle 2 Cycle 3 from to from to from to from to from to from to from to from to from to Mo Tu We Th Fr Sa Su Mixer Circuit 2 Time program P1 Time program P2 Time program P3 Tag Cycle 1 Cycle 2 Cycle 3 Cycle 1 Cycle 2 Cycle 3 Cycle 1 Cycle 2 Cycle 3 from to from to from to from to from to from to from to from to from to Mo Tu We Th Fr Sa Su 33

Overview of settings 4 205 753 / 04 HYDRAULIC Par. Designation Factory 10 20 30 40 50 Lev. 2 Function allocation of the output DHW charging pump 1 HF 3 Function allocation of the output Mixer circuit 1 3 HF 4 Function allocation of the output Mixer circuit 2 3 HF 5 Function allocation of the output Direct circuit Pump 2 HF 6 Function allocation of the variable output 1 OFF HF 7 Function allocation of the variable output 2 OFF/ 43 HF 8 Function allocation of the variable input 1 OFF HF 9 Function allocation of the variable input 2 OFF HF 10 Function allocation of the variable input 3 OFF/ 33 HF 11 Indirect return increase OFF HF 12 Maximum limit energy management 80 C HF 13 Activation cooling buffer OFF HF 14 Release contact cooling to KVLF OFF HF SYSTEM Par. Designation Factory 10 20 30 40 50 Lev. LANGUAGE Selection of the style-language EN BE 2 Number of cleared switching time programs P1 HF 3 Clearing for separate operating mode 1 HF 4 Limit temperature for summer disconnection 22 C HF 5 System frost protection 3 C HF 6 Demand contact module for VE1 1 HF 7 Demand contact module for VE2 1 HF 8 Demand contact module for VE3 1 HF 9 Air conditioning zone -12 C HF 10 Building type 2 HF 11 Automatic reversion time (surface end user level, except info. level) 5 Min HF 12 Pump and mixer compulsory operation ON HF 13 Logical fault signal OFF HF 14 Automatic SET function (after 24:00, is automatically set to OFF) ON/ OFF 15 Blocking code for heating Installer OEM 18 Release cycle temperature OFF HF 19 Frost protection mode 30 Min HF 21 RTC adjustment 0 HF 23 Blocking code operator level OFF HF 24 Temperature display in Fahrenheit OFF OEM 26 First commissioning date (after 24:00) - OEM 27 Fault report (only TTT/UG) 2 HF 28 Fault stack 2 ON HF 29 Characteristic curve emergency operation 0 C HF 30 Thermostat function sensor allocation AF HF 31 Thermostat function reference value 1 C HF 32 Thermostat function switching difference 3K HF 33 Thermostat function anti-blocking protection ON HF Top: ArtNo - HW Index ----- OEM Bottom: Code:REV - Software version RESET Reset parameter values BE HF 34

4 205 753 / 04 Overview of settings DHW Par. Designation Factory 10 20 30 40 50 Lev. DHW-NIGHT DHW - economy temperature 45 C/ 40 C BE 2 DHW-legionella protection-day OFF HF 3 DHW-egionella protection-time 2:00 HF 4 DHW-legionella protection-temperature 65 C HF 5 DHW-temperature recording 1 HF 6 DHW-maximum temperature limit 65 C/ 50 C HF 7 DHW-mode of operation 1 HF 8 DHW-tank discharge protection ON/ OFF HF 9 DHW-charging temperature excess 20 K HF 10 DHW-switching difference 5 K OEM 11 DHW-charging pump follow-on 5 Min/ 1 Min OEM 12 ZKP-switching time program AUTO HF 13 ZKP-economy interval (pause) 0 Min HF 14 ZKP-economy interval (period duration) 20 Min HF 17 H-GEN behaviour during SLP follow-on time AUTO/ OFF HF 18 DHW-parallel loading OFF HF 19 DHW-time-out OFF HF 20 PI-reference value control OFF HF 21 PI-amplifi cation factor, P-portion Xp 0,1 %/ K OEM 22 PI-scanning time Ta 20 sec OEM 23 PI -reset time Tn 600 sec/ C OEM UNMIXED CIRC Par. Designation Factory 10 20 30 40 50 Lev. 1 Type of reduced operation ECO/ ABS HF 2 Heating system (exponent) DK= 1,30 HF 3 Room override (in connection with room sensor) 3 HF 4 Room factor OFF HF 5 Adaptation heating curve OFF HF 6 Switch-on optimisation 1 HF 7 Heating limit 0,5 OEM 8 Room frost protection limit 10 C HF 9 Room thermostat function OFF HF 10 Outside temperature allocation 0 HF 11 Constant temperature reference value 20 C HF 12 Minimum temperature limit 10 C HF 13 Maximum temperature limit 75 C/ 55 C HF 14 Temperature elevation Heating circuit DK=0 HF 15 Pump follow-on 5 Min HF 16 Screed function OFF HF 23 Room control K-factor 8 HF 24 Room control Tn-factor 35 MIN HF 25 Vacation mode STBY HF 36 Minimum value override OFF HF Name heating circuit (max. 5 letters) XXXXX HF 35

Overview of settings 4 205 753 / 04 MIX. VALVE-1 Par. Designation Factory 10 20 30 40 50 Lev. 1 Type of reduced operation ECO/ ABS HF 2 Heating system (exponent) MK= 1,10 HF 3 Room override (in connection with room sensor) 3 HF 4 Room factor 100 % HF 5 Adaptation heating curve ON HF 6 Switch-on optimisation 1 HF 7 Heating limit 0,5 OEM 8 Room frost protection limit 10 C HF 9 Room thermostat function OFF HF 10 Outside temperature allocation 0 HF 11 Constant temperature reference value 20 C HF 12 Minimum temperature limit 10 C HF 13 Maximum temperature limit 75 C/ 55 C HF 14 Temperature elevation/ abatement heating circuit 8/ 0K HF 15 Pump follow-on 5 Min HF 16 Screed function OFF HF 18 P-portion Xp 2,0 %/ K OEM 19 Scanning time Ta 20 sec OEM 20 I-portion Tn 270 sec OEM 21 Running time servomotor 150 sec HF 22 End position function, valve 1 OEM 23 Room control K-factor 8 HF 24 Room control Tn-factor 35 MIN HF 25 Vacation mode STBY HF 36 Minimum value override OFF HF 37 Mixer lead time OFF HF 38 Regulation offset 0 HF 50 Cooling switch-on point, OT OFF HF 51 Cooling max. point, OT 35 C HF 52 Cooling reference fl ow temp. at switch-on point 18 C HF 53 Cooling reference fl ow temp. at max. point 24 C HF 54 Cooling reference room temp. at switch-on point 23 C HF 55 Cooling reference room temp. at max. point 28 C HF 56 Min. temp. cooling 18 C OEM Name heating circuit (max. 5 letters) XXXXX HF 36