Installation Manual

H-Series Demand Duo™ 2 Installation and Operation Manual 3

READ AND SAVE THESE INSTRUCTIONS

1. Welcome ....................................................................................................................... 4

2. Safety ............................................................................................................................ 5

2.1 Safety Symbols ....................................................................................................... 5

2.2 Safety Precautions .................................................................................................. 5

3. About ............................................................................................................................ 7

3.1 Components ............................................................................................................ 7

3.2 Specifications .......................................................................................................... 8

3.3 Dimensions ............................................................................................................. 11

4. Installation Preparation.................................................................................................. 13

4.1 Guidelines ............................................................................................................... 13

4.2 Typical Installations ................................................................................................. 14

4.3 Confirm Shipping Contents ...................................................................................... 16

4.4 What You Will Need ................................................................................................ 17

4.5 Choose an Installation Location............................................................................... 17

5. Installation Instructions .................................................................................................. 19

Step 1: Transport .......................................................................................................... 19

Step 2: Secure for Earthquake ...................................................................................... 19

Step 3: Position Tank and Connect Water ..................................................................... 20

Step 4: Install Rack Frame Legs ................................................................................... 21

Step 5: Position Rack .................................................................................................... 22

Step 6: Install Water Flex Lines ..................................................................................... 23

Step 7: Secure Rack ..................................................................................................... 24

Step 8: Install Vent System ........................................................................................... 25

Step 9: Install Relief Valve Lines ................................................................................... 26

Step 10: Fill System with Water ..................................................................................... 28

Step 11: Connect Condensate Drain Line ..................................................................... 29

Step 12: Connect Gas Supply ....................................................................................... 30

Step 13: Connect Communication Cable ....................................................................... 31

Step 14: Connect EZConnect™ Cable .......................................................................... 31

Step 15: Connect Power Supply .................................................................................... 32

6. Post Installation Checklist .............................................................................................. 34

7. Maintenance .................................................................................................................. 35

8. Appendices.................................................................................................................... 36

8.1 Piping Diagram for Basic Installations ..................................................................... 36

8.2 Controller Diagnostics ............................................................................................. 37

8.3 Replacement Parts .................................................................................................. 39

9. Warranty ........................................................................................................................ 42

10. Notes ........................................................................................................................... 44