Installation Manual

H-Series Demand Duo™ 2 Installation and Operation Manual 15
#
Item
Field
Supplied
❶
Hot Water Outlet
✓
❷
Hot Water Outlet Shut-Off
Valve
✓
❸
Cold and Hot Unions
✓
❹
Temperature-Pressure
Relief Valve
❺
Temperature-Pressure
Relief Valve Discharge
Pipe (do not cap, plug or
reduce)
✓
❻
Controller
❼
Pressure Relief Valve
Discharge Pipes (do not
cap, plug, or reduce)
✓
❽
Condensate Discharge
Pipe (must include an air
gap)
❾
Gas Control Valve
✓
❿
Gas Union
✓
⓫
Cold Water Supply Shut-Off
Valve
✓
⓬
Cold Water Supply
✓
⓭
Thermal Expansion Tank
✓
⓮
Non-Tempered Supply Line
✓
⓯
Thermostatic Mixing Valve
✓
⓰
Non-Tempered Return Line
✓
⓱
Purge Line
✓
⓲
Check Valve
✓
Cold water line and expansion tank locations
are altered for illustrative purposes.
Installation with Mixing Valve
IMPORTANT
⓯
⓮
⓬
⓭
❹
❺
❻
❾
❿
❶
❷
❸
❸
⓫
❼
❽
⓰
⓱
⓲