Trim Piping; System Piping - Baxi LUNA DUO-TEC 60 GA Notice D'installation

5.4 Trim Piping

• Temperature - Pressure Gauge. Install temperature pressure gauge in near boiler piping.
• Some boiler models may have integral drain valve located inside jacket directly underneath pump. Install provided external
drain valve as required.

5.5 System Piping

• Ensure caps are removed from boiler water connections.
• See Figure 5-6 for basic system piping configurations.
• Systems with automatic fill valves require back flow prevention device.
• Single boiler system. See Figures 5-2, 5-6, for general guidance. Additional considerations:
• Boiler control is designed for single central heating pump. Installer responsible for integration of multiple central heating
pumps.
• Boiler control allows domestic hot water prioritization. Function could be lost if central heating pump is not directly
connected to control system.
• Multiple boiler system. Considerations:
• Control system requires equivalent water temperatures entering each boiler to properly sequence and adjust system
supply temperature.
• Thoroughly flush all hydronic piping.
• Secure all valves/fittings to boiler.
Burn and scald hazard. Verify all plastic caps are removed from boiler connections. Failure to follow these
instructions could result in death or serious injury.
• Ensure washers supplied are utilized.
• Face valves and fittings to rear wall.
• Fit union bends to valves.
A. If soldering to boiler union bends, ensure bends are not connected to the valves, otherwise internal seals may be
damaged.
B. Verify 3/4" [22.2 mm] isolating valve with filter is fitted to heating return connection.
C. Fit pressure relief valve connection vertically before heating isolating valve.
• Connect system valve pipe work to the boiler.
• Route pressure relief valve discharge piping to the floor. Follow local code with respect to necessary distance to the floor.
See Figures 5-1 & 5-2.
• Verify all valves are closed.
240012485 REV A [12/30/2018]
!
WARNING
16