Trim Piping; System Piping - UTICA BOILERS UCS-380 Installation, Operation & Maintenance Manual

5.5 Trim Piping

• Temperature - Pressure Gauge. Install temperature
pressure gauge using field supplied piping. See figure 5-3.
Install as close to boiler supply fitting as practical and
visible.
• Boiler has integral drain valve located inside jacket directly
underneath pump. Install provided external drain valve.

5.6 System Piping

• See Table 4 for basic system piping configurations.
• Systems with automatic fill valves require back flow
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 not directly connected to control system.
• Multiple boiler system. See figures 5-6, 5-7 for general
guidance. Additional 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 flush all hydronic piping.
• Secure all valves/fittings to boiler.
• 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.
5 - HYDRONIC PIPING
Burn and scald hazard. Primary/Secondary piping
with closely spaced supply and return lines is
mandatory for ASME Code Compliance. Failure to
follow these instructions could result in death or
serious injury.
FIGURE 5-3 Temperature Pressure Gauge and Safety
Relief Valve Installation - Viewed from Back of Boiler
MINIMUM
ACCEPTABLE
HEIGHT FOR
LWCO PROBE
12
!
WARNING
LWCO
Temperature
Pressure
Gauge
System
Return
12" (305mm)
Maximum
Separation
P/N 240011662, Rev. D [06/30/2017]
System
Supply
Safety
Relief
Valve
Check Local Codes
For Maximum
Distance To Floor