Velux CLI U12 SD0W118 El B/U - Table of Contents

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2 – Contents

Contents

Part 1: Product and safety information Page – 3

− Deﬁnitions Page – 3

− Local installation regulation Page – 3

− Water temperature adjustment Page – 3

Part 2: General information Page – 4

− Preface Page – 4

− Introduction Page – 4

− System description Page – 4

− Specications Page – 4

− Collectors and ashings Page – 4

− Solar storage tank Page – 5

− Collector loop piping Page – 5

− Pump station controller Page – 5

− Balance of system Page – 5

Part 3: Kit installation Page – 6

− Installation check list Page – 6

− VELUX solar system with electric or gas back-up Page – 7

− VELUX solar system with boiler back-up Page – 8

− VELUX solar system with tankless back-up Page – 9

− VELUX solar pre-heat water heating system Page – 10

− VELUX solar system components Page – 11

− Solar collector orientation Page – 14

− Collector installation Page – 14

− Collector location on 16” o.c. rafters Page – 15

− Collector location on 24” o.c. rafters Page – 16

− Flashing installation Page – 20

− Solar storage tank and pump station controller location Page – 21

− Inspection of solar storage tank Page – 22

− Solar storage tank and pump station controller installation Page – 22

− Expansion tank installation Page – 23

− Air separator and ttings to tank Page – 24

− Solar loop piping to collectors Page – 24

− Solar loop piping to heat exchanger Page – 25

− Potable water piping Page – 26

− Tank and collector temperature sensor connection to

pump station controller Page – 28

− Solar loop and potable water piping insulation and support Page – 28

− Electrical connection (electric backup systems only) Page – 29

− Gas connection (gas backup systems only) Page – 30

− Venting connection (gas backup systems only) Page – 31

− Boiler backup HX connection (boiler backup systems only) Page – 32

− Boiler loop circulator sizing (boiler backup systems only) Page – 32

− Charging the potable water system Page – 32

− Freeze protection Page – 32

− Commissioning the solar system Page – 33

− Programming system controller Page – 34

− System controller operation Page – 34

Part 4: Maintenance Page – 35

− Maintenance check list Page – 35

− Shut down procedures Page – 35

− Vacation planning Page – 35

− Estimated life of components Page – 36

Part 5: Specications Page – 37

− VELUX solar collector Page – 37

− VELUX extubes and connections Page – 38

− VELUX solar storage tanks (electric backup) Page – 39

− VELUX solar storage tanks (heat exchanger backup) Page – 40

− VELUX solar storage tanks (atmospheric gas backup) Page – 41

− VELUX solar storage tanks (power vent gas backup) Page – 42

− VELUX solar pump station Page – 43

− VELUX heat transfer uid Page – 44

− Testing heat transfer uid pH level Page – 44

− Spill, leak and disposal procedures for propylene glycol Page – 44

− Propylene glycol emergency overview Page – 45

Part 6: Component lists Page – 46

− VELUX solar system kits Page – 46

Part 7: Troubleshooting Page – 50

VELUX solar SRCC OG-300 label set Page – 52

Maintenance notes Page – 53

Service Information Page – 54

SRCC OG-300 System Certication Page – 55

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