Part 6, Piping with optional vision 1 system, A. vision 1 system piping – HTP MC120 User Manual
Page 28: B. zoning with zone valves using vision 1, C. zoning with circulators using vision 1
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LP-171 Rev. 4.10.14
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 2A through 3G when
piping your heater. All general piping practices should still be maintained.
B. ZONING WITH ZONE VALVES USING VISION 1
1. Connect the heater to the system as shown in piping details 2A through 2C.
2. Connect the DHW circulator (P2) directly to the heater as shown in the piping details. The heater circulator (P1) will shut down when
there is a DHW demand.
C. ZONING WITH CIRCULATORS USING VISION 1
1. Connect the heater to the system as shown in piping details 3A through 3G.
2. Connect the DHW circulator (P2) directly to the heater as shown in the piping details. The heater circulator (P1) will shut down when
there is a DHW demand.