Plumbing assembly for hydronic heating system and method of installation

A plumbing assembly for maintaining the temperature equilibrium of a hydronic heating system that has a heat source for heating fluid, and distributing means for distributing said fluid to at least one radiant zone and returning said fluid to said heat source, said plumbing assembly comprising:

• (i) a zone supply conduit with a supply port;
• (ii) a zone return conduit with a return port;
• (iii) a heat loop comprising a first conduit with a supply end and a return end, and a bypass valve coupled between said supply end and said return end for controlling the flow of fluid from said supply end through said first conduit to said return end;
• (iv) a first looped conduit connected to said first conduit upstream from said bypass valve;
• (v) a second looped conduit connected to said first conduit downstream from said bypass valve;
• (vi) an injection pump connected downstream from said first looped conduit;
• (vii) a balancing valve connected upstream from said second looped conduit, wherein said zone supply and return conduits, said heat loop, said bypass valve, said first looped conduit, said second looped conduit, said injection pump and said balancing valve are secured together as a single unit on a frame;
• and,
• (viii) at least one zone pump connected downstream from said injection pump, said zone pump being secured to said frame.

A method of installing a hydronic heating system that has a heat source for heating fluid, and a distributing means for distributing said fluid to at least one radiant zone and returning said fluid to said heat source, the method comprising the steps of:

• (a) securing together as a single unit on a frame:
• (i) a zone supply conduit with a supply port;
• (ii) a zone return conduit with a return port;
• (iii) a heat loop comprising a first conduit having a supply end and a return end, and connecting a bypass valve to said first conduit between said supply end and said return end;
• (iv) a first looped conduit, said first looped conduit being connected to said first conduit upstream from said bypass valve;
• (v) a second looped conduit, said second looped conduit being connected to said first conduit downstream from said bypass valve;
• (vi) an injection pump, said injection pump being connected downstream from said first looped conduit;
• (vii) a balancing valve, said balancing valve being connected upstream from said second looped conduit;
• (viii) at least one zone pump, said at least one zone pump being connected downstream from said injection pump;
• (ix) a controller for operation of such a hydronic heating system;
• (b) connecting the heat source and said plumbing assembly in a fluid-tight fashion;
• and,
• (c) connecting the distributing means and said plumbing assembly in a fluid-tight fashion, wherein thermal energy is absorbed by the fluid at the heat source and repeatedly cycled to a radiant zone and back to said heat source via said plumbing assembly and the distributing means.