Installation Manual

H-Series Demand Duo™ 2 Installation and Operation Manual 16
To avoid danger of
suffocation, keep
plastic bags away
from babies, small children and pets. Do not
use these bags in cribs, beds, carriages, or
playpens. The bags are not a toy.
WARNING
• 119-Gallon Storage Tank
• Recovery Pump
• Pump Isolation Valves
• Electric Assembly
• DuoSmart™ Digital Controller
The Demand Duo™ 2 Commercial Hybrid Water Heating System is packaged and shipped in two
separate shipping boxes for horizontal units. Carefully unpack the shipping boxes and verify the
following contents are included.
If any items are damaged or missing, contact your local dealer/distributor or call Rinnai Customer Care
at 1-800-621-9419. Do not attempt to use any item that appears damaged.
• Rack System with two (2) pre-installed
Rinnai Tankless Water Heaters
• Frame Legs (Qty 2)
• Water Flex Lines (Qty 2)
• 18 in. (457 mm)
• 36 in. (914 mm)
• 5/16 in.-18 Bolts (Qty 4) (not shown in im-
age)
• Securing Bracket
• Documentation:
• Demand Duo™ 2 Commercial Hybrid
Water Heating System Installation and
Operation Manual (this manual)
• Tankless Water Heater Installation and
Operation Manual
Assembled View
119-Gallon
Storage Tank
DuoSmart™ Digital Controller
Recovery Pump
Electric Assembly
Pump Isolation
Valves
2-Unit Tankless
Rack System
Frame Legs (Qty 2)
Assembled View
Shipping Box 1
Shipping Box 2
Securing Bracket
Water Flex Line
36 in. (914 mm)
Water Flex Line
12 in. (305 mm)