17
5.4 Trim Piping
• Temperature - Pressure Gauge. Install temperature
pressure gauge using piping provided with boiler. See
Figure 5-1.
• 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 5-9 for basic system piping congurations.
• Systems with automatic ll valves require back ow
prevention device.
• Single boiler system. See Figures 5-4, 5-5,
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.
WARNING
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.
!
• Thoroughly ush all hydronic piping.
• Secure all valves/ttings to boiler.
5 - HYDRONIC PIPING
• Ensure washers supplied are utilized.
• Face valves and ttings 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 lter is
tted 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 oor.
Follow local code with respect to necessary distance to the
oor. See Figure 5-2.
• Verify all valves are closed.
240011947 REV B, [03/31/2018]
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