Part 6, Piping with optional vision 1 system, A. vision 1 system piping – HTP 399M User Manual
Page 31: B. zoning with zone valves using vision 1, C. zoning with circulators using vision 1
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PART 6 – PIPING WITH OPTIONAL VISION 1 SYSTEM
(DHW PRIORITY WITH OUTDOOR RESET)
A. VISION 1 SYSTEM PIPING
It is important that the system piping is done correctly when using the Vision 1 System. Follow the piping diagrams 3A through 4H when
piping your boiler. All general piping practices should still be maintained.
B. ZONING WITH ZONE VALVES USING VISION 1
1. Connect the boiler to the system as shown in piping details 3A through 3C.
2. Connect the DHW circulator (P2) directly to the boiler as shown in the piping details. The boiler circulator (P1) will shut down when
there is a DHW demand.
C. ZONING WITH CIRCULATORS USING VISION 1
1. Connect the boiler to the system as shown in piping details 4A through 4H.
2. Connect the DHW circulator (P2) directly to the boiler as shown in the piping details. The boiler circulator (P1) will shut down when
there is a DHW demand.