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Summary of Contents for Wolf SM2
- Page 1 Installation and operating instructions SM2 solar module Wolf GmbH · Postfach 1380 · 84048 Mainburg · Tel. 08751/74-0 · Fax 08751/741600 · Internet: www.wolf-heiztechnik.de Part no. 30 62 438 Subject to modifications 03/09 GB...
- Page 2 Index Safety instructions ..............3 Standards / Regulations .............4 Terminology ................5 Abbreviations / Equipment description ........6 Installation .................7 DIP switch settings ..............8 Operating modes ................9 System overview ..............10 System description ..............11-13 Electrical connection............14-27 Parameter list ................28 Parameter description SOL01 / P01 Start differential solar cylinder 1 ......29 SOL02 / P02 Stop differential solar cylinder 1 .......29 SOL03 / P03 Collector protection function ......29 SOL04 / P04 Critical collector temperature ......29...
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Page 3: Safety Instructions
Safety instructions Auxiliary functions Blocking cylinder reheating "solar boiler stop" ....38 Blocking pasteurisation ..........38-39 Anti-seizing pump protection ..........39 Loading the standard values (reset) ........39 Maximum cylinder and collector temperature over 24 h ..39 Hours run ................39 Resetting values ..............39 Fault codes ................40 Sensor resistances ..............41 Specification ................42... -
Page 4: Standards / Regulations
- Regularly check the perfect function of all electrical equipment. - Only qualified personnel may remove faults or repair damage. - Only replace faulty components or equipment with original Wolf spare parts. - Always maintain specified electrical protection values (see specification). - Page 5 Terminology Terminology Collector temperature The collector temperature is the medium temperature that is generated by insolation at the collector. The collector temperature is measured at the flow outlet of the collector or collector array. DHW cylinder temperature The cylinder temperature is the temperature that is measured in the lower area of the cylinder at the level of the indirect solar coil.
- Page 6 Parameters can be modified, and values as well as fault codes can be displayed with the programming modules BM or BM-Solar. The SM2 has an eBUS interface and can therefore be integrated into the Wolf control system. Solar circuit pump 1...
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Page 7: Installation
Solar module installation - Remove the solar module from its packaging. - Mount the solar module directly on the wall. - Wire up the SM2 solar module in accordance with the wiring diagram. Note: Never route on-site cables/leads for temperature sensor, flow meter and eBUS together with mains power cables. - Page 8 The SM2 solar module can be operated in different modes. a) SM2 as part of a Wolf control system The SM2 solar module can be integrated into a Wolf control system. In that case, the solar module will be controlled from the programming module BM with address 0.
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Page 9: Operating Modes
BM-Solar BM-Solar BM-Solar The BM-Solar can be clicked into the SM2 solar module or can be used as a remote control on a wall mounting base (accessory). c) SM2 (stand alone) without programming module The solar module is operated without programming module. -
Page 10: System Overview
System overview The SM2 solar module contains eleven different systems with up to two solar cylinders and two collector arrays. Parameter 12 - system configuration enables the selection of the most suitable system. System overview: System System Number Number config-... -
Page 11: System Description
System description System configuration 1 If the temperature differential between collector and solar cylinder Single circuit system exceeds the selected start differential, the solar circuit pump will be (for layout, see page 16) started, and the cylinder will be heated up to the selected maximum cylinder temperature (temperature differential control). - Page 12 If, when the pump is idle, the collector temperature rises far enough to enable the upper section to be heated again, the SM2 module changes over to heat the upper cylinder section. The lower section continues to be heated if the collector temperature fails to reach the required value.
- Page 13 System description System configuration 8 This functions like system configuration 7, whereby heating is Dual-circuit system with achieved via collector array 1 or 2 via motorised valves that are two collector arrays, opened accordingly. When the cylinder is heated the solar circuit two solar cylinders with pump is always switched as well.
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Page 14: Electrical Connection
Electrical connection Output connection (230 V) Solar circuit pump SKP1 This is where the solar circuit pump (systems with solar circuit pump) or solar circuit pump 1 (systems with two solar circuit pumps) are connected. Output A1 Output A1 is assigned differently, subject to the selected system configuration: Configuration 3, 5, 7: Solar circuit pump 2 Configuration 2, 4, 6, 8, 11: Motorised valve 1... - Page 15 Confi guration 9, 10, 11: Bypass sensor (NTC) The input is not assigned with confi guration 1. eBUS When using the solar module SM2 as part of a Wolf control system, the individual components are linked together via eBUS. Recommended cables/ H005VV 3x1.0 mm²...
- Page 16 Electrical connection System configuration 1: Single circuit system Solar Return sensor sensor Mains cylinder 230 V SFS1 Solar Flow rate sensor generator collector Solar circuit SFK1 pump SKP1 Collector Solar cylinder 3062438_0309...
- Page 17 Electrical connection System configuration 2: Single circuit system with return temperature raising for central heating backup Solar Return sensor sensor Mains cylinder Diverter valve 230 V SFS1 3WUV Solar Buffer sensor sensor collector SFK1 Solar circuit pump SKP1 circulation pump ZKP (option) Collector Return...
- Page 18 Electrical connection System configuration 3: Dual-circuit system with two solar cylinders in parallel operation Solar Return sensor sensor Solar circuit cylinder 1 Mains pump SKP2 SFS1 230 V Solar Flow rate Solar sensor generator sensor collector cylinder 2 Solar circuit SFK1 SFS2 pump SKP1...
- Page 19 Electrical connection System configuration 4.0: Dual-circuit system with two solar cylinders with cylinder priority control Solar Return sensor sensor cylinder 1 Mains Diverter valve SFS1 230 V 3WUV Solar Flow rate Solar sensor generator sensor collector cylinder 2 SFK1 SFS2 Solar circuit pump SKP1 circulation...
- Page 20 Electrical connection System configuration 4.1: Single circuit system with two internal indirect solar coils inside the cylinder Solar Return sensor sensor cylinder 1 Mains Diverter valve SFS1 230 V 3WUV Solar Flow rate Solar sensor generator sensor collector cylinder 2 SFK1 SFS2 Solar circuit...
- Page 21 Electrical connection System configuration 5: Dual-circuit system with two collector arrays and two solar circuit pumps Solar Return sensor sensor Solar circuit Cylinder 1 Mains pump SKP2 SFS1 230 V Solar sensor Flow rate Solar collector generator sensor array 1 collector SFK1 array 2...
- Page 22 Electrical connection System configuration 6: Dual-circuit system with two collector arrays and one solar circuit pump Solar Return sensor sensor cylinder 1 Mains SFS1 Motorised Motorised 230 V valve el. V1 valve el. V2 Solar sensor Flow rate Solar collector generator sensor collector...
- Page 23 Electrical connection System configuration 7: Dual-circuit system with two collector arrays, two solar cylinders with cylinder priority control and two solar circuit pumps Solar Solar sensor sensor Solar circuit cylinder 1 cylinder 2 Mains pump SKP2 Diverter valve SFS1 SFS2 230 V 3WUV Solar sensor...
- Page 24 Electrical connection System configuration 8: Dual-circuit system with two collector arrays, two solar cylinders with cylinder priority control and one solar circuit pump Solar Solar sensor sensor cylinder 1 cylinder 2 Mains SFS1 SFS2 Motorised Motorised 230 V valve el. V1 valve el.
- Page 25 Electrical connection System configuration 9: Single circuit system, bypass circuit Solar sensor cylinder 1 Mains SFS1 Diverter valve 230 V 3WUV Solar Bypass sensor sensor BPF collector SFK1 Solar circuit pump SKP1 circulation pump ZKP (option) Collector array 1 Solar cylinder 3062438_0309...
- Page 26 Electrical connection System configuration 10: Dual-circuit system with two solar cylinders with cylinder priority control and bypass circuit Solar Solar sensor sensor cylinder 1 cylinder 2 Mains SFS1 SFS2 Diverter valve Diverter valve 230 V 3WUV1 3WUV2 Solar Bypass sensor sensor BPF collector SFK1...
- Page 27 Electrical connection System configuration 11: Dual-circuit system with two solar cylinders with parallel cylinder operation and bypass circuit Solar Solar sensor sensor cylinder 1 cylinder 2 Mains SFS1 SFS2 Motorised Motorised 230 V valve el. V1 valve el. V2 Bypass Solar sensor BPF sensor...
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Page 28: Parameter List
Parameter list All parameters can be adjusted via the programming module BM or BM-Solar. With the BM, access is provided via control level 2 at the menu level "Contractor → Solar" (see BM operating instructions). With the BM-Solar, turning the rotary selector enables the parameter level to be changed (see BM-Solar operating instructions). -
Page 29: Parameter Description
The following applies to systems with only one cylinder: Solar cylinder = solar cylinder 1 The SM2 captures the temperature at the collector and at the SOL01 / P01 lower section of cylinder 1 at the level of the internal indirect solar Start differential coil. - Page 30 BM programming modules. In conjunction with the solar module Assigning solar cylinder 2 SM2, up to two cylinders can be used as solar cylinders. One BM programming module must be assigned to each solar cylinder to safeguard the functions "Blocking cylinder reheating"...
- Page 31 Parameter description Cylinder assignment example: Option BM 1 BM-Solar BM 2 BM 0 MM 1 MM 2 Wolf boiler Cylinder Solar Solar at the cylinder 1 cylinder 2 at the at BM 2 Note: MM = mixer module In this example, solar cylinder 1 is assigned to the programming module with address 1 (BM1, and solar cylinder 2 to the programming module with address 2 (BM2).
- Page 32 SOL10 / P10 = 0: Medium = Water SOL10 / P10 = 1: Medium = Heat transfer medium specified by Wolf A BUS feed is integrated into solar module SM2, to supply other SOL11 / P11 BUS subscribers, for example a programming module. You can BUS feed program the respective function.
- Page 33 The schematic layout of the various systems is illustrated with a description of the electrical connections relative to the individual system configurations (chapter "Electrical connection"). * When using the SM2 with connection set CGS / CGW / CGI (part no. 27 44 465), select system configuration 2. 3062438_0309...
- Page 34 Parameter description With system configurations 1, 2, 4, 6, 8, 9, 10, 11, the solar circuit SOL13 / P13 pump can be operated with variable speed control. Variable speed pump control SOL13 / P13 = 1 → variable speed control enabled SOL13 / P13 = 0 → variable speed control disabled (factory setting) Once variable speed control has been enabled, first implement...
- Page 35 When the SM2 is operated as part of the Wolf control system WRS, the boilers are blocked when the start conditions have been met. If a demand is issued by at least one heating circuit or one...
- Page 36 Parameter description With system configurations 3 and 11, both solar cylinders are SOL22 / P22 operated in parallel. Start differential, parallel If during heating the cylinder with priority the temperature differential cylinder operation between the collector and the cylinder with priority exceeds the selected value, the lower ranking cylinder will be heated in parallel to the cylinder with priority.
- Page 37 Medium will be pumped through the collector array for 30s every 30 minutes. This function is disabled between 20:00 h and 06:00 h in Wolf control systems that are equipped with a BM programming module or in conjunction with a radio clock receiver.
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Page 38: Auxiliary Functions
DHW temperature at the associated BM, if solar heating was successfully completed in the 24 hours preceding 14.00 h (actual cylinder temperature captured by the SM2 > set cylinder temperature). The cylinder will be regulated to the set cylinder temperature by the boiler if, within the last 24 hours, solar heating was not successfully completed. - Page 39 Auxiliary functions Weekly pasteurisation The pasteurisation function via the boiler will be blocked if, by 18.00 h on the day for which pasteurisation has been scheduled, the cylinder temperature captured by the solar cylinder sensor has been held above 65 °C for at least one hour. DHW circulation pump With system configurations 2, 3, 4, 5, 6, 7, 9, 10 a DHW circulation pump can be connected to output A3.
- Page 40 Fault codes / Changing a fuse If the SM2 recognises a fault, the red LED flashes and the fault code of the solar module is displayed in the associated BM or BM-Solar. When using the SM2 as part of a Wolf control system, the fault code will also be displayed on the central BM programming module with address 0.
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Page 41: Sensor Resistances
Sensor resistances Solar sensor solar cylinder 1 (SFS 1), solar sensor solar cylinder 2 (SFS 2) Sensor resistances return sensor (RLF), bypass sensor (BPF), buffer sensor (PF) Temp. °C Resist. Ω Temp. °C Resist. Ω Temp. °C Resist. Ω Temp. °C Resist. -
Page 42: Specification
Specification Specification Supply voltage ..............230 VAC (+10/-15%) / 50 Hz Power consumption, electronics ........< 8 VA Max. load, output .............1 A Protection according to DIN 60529 .........IP 30 Safety class ..............I I Permissible ambient temperature in operation ....0 to 50 °C Permissible ambient temperature during storage ...-30 to +60 °C Data memory ..............EEPROM (non-volatile) Fuse protection ..............Fine-wire fuse 5x20 / 6.3A/M... - Page 43 Keyword index Abbreviations ........................6 Anti-seizing pump protection ..................39 Assignment, solar cylinder 1..................30 Assignment, solar cylinder 2................... 30, 35 Blocking cylinder reheating................... 38 Blocking pasteurisation....................38 Burner blocked during return temperature raising ............35 BUS feed ........................32 Changing a fuse ......................
- Page 44 System configuration 11 ..................13, 27 System overview: ......................10 Terminology ........................5 Unit description ....................... 6 Variable speed control pump ..................34 Wolf GmbH · Postfach 1380 · 84048 Mainburg · Tel. 08751/74-0 · Fax 08751/741600 · Internet: www.wolf-heiztechnik.de...