Installation Manual

Demand Duo™ H-Series Installation and Operation Manual 42
Notes: • Installation must conform to applicable code and all requirements listed in the installation manual.
Balancing valves, equivale
nt piping, pressure gag-
es, and temperature gages are to be used as necessary to ensure proper flow between units.
• Condensate piping shall be CPVC or PVC material and shall not be smaller than the drain connection on the appliance. • Components of the condensate drainage shall be CPVC or PVC material. All components shall be selected for the pressure and te
mperature rating of
the installation.
• Where the drain pipes from more than one unit are manifolded together for condensate drainage, the pipe or tubing shall be si
zed in accordance with
an approved method as dictated by local codes.
• Condensate must be disposed of according to local codes.
HOT WATER SUPPLY LINE
CONDENSATE
DRAIN LINE
PIPE EACH T&P AND PRV TO OPEN DRAIN
BUILDING CIRCULATION PUMP AND HOT WATER RETURN LINE (OPTIONAL)
COLD WATER SUPPLY
GAS SUPPLY
Additional units can be installed as illustrated.
Figure 44