Primary Piping
System Piping - Radiant Heating with Mixing Valve
Connect the PERFORMANCE PLUS to the system piping as shown with a radiant sys- tem using a thermostatic mixing valve as shown in Fig. 14 page 25. The primary / sec- ondary piping ensures sufficient return tem- perature to the PERFORMANCE PLUS.
personal injury, death or substantial property damage.
Size the system piping and circulator to pro- vide the flow needed for the radiant system.
To control the zone circulators reference Figure 34, page 45.
NOTICE
If the radiant system tubing contains no oxygen barrier, a stainless steel heat exchanger must be used. Failure to install a heat exchanger could lead to premature failure of the outer tank and void any warranty claim.
WARNING
Radiant heating system piping should include a means of regulating the boiler return water. The return water tempera- ture to the unit should be maintained at 130ºF or higher. Failure to prevent low return water temperature to the unit could cause premature failure of the unit and it’s burner system resulting in severe
NOTICE
To ensure adequate flow rate through the PERFORMANCE PLUS, maintain a minimum 1 inch diameter on the system piping connecting the unit to and from the primary / secondary connection.
System Piping - Multiple Units Installation
Use a balance manifold system as the pri- mary / secondary connection to the space heating piping as shown in Fig. 16 page 26.
Refer to Fig. 11 page 23 to install air elim- ination and expansion tank.
For the space heating piping refer to the applications mentioned in this manual or use recognized design methods.
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