Installation & Servicing Instructions Rinnai Q Premier
21
To protect the entire heating system we recommend installing a dirt particle trap
in the return circuit. When the boiler is installed to an existing heating system
this trap is required. Use of a Y strainer is not permitted as a substitute for a
dirt trap.
- Install shut-off valves immediately before and after the dirt particle
fi
lter to allow
the trap to be cleaned.
- Figure 10 is the location of a garden hose thread boiler drain that can be used to
drain the boiler or add water treatment additives to the system such as inhibitors
or glycol.
- For information on locating an additional expansion tank and system
fi
ll, please
see the Rinnai Boiler Applications Manual.
Thoroughly fl ush all pipes and radiators. We recommend the use of a Rinnai
approved system cleaner. Please refer to the list of approved Rinnai system
cleaners in this chapter.
- Refer to the installation template and chapter 5.3 for the pipe connection
dimensions.
To ensure the correct heat transfer the system piping must be sized correctly. The
piping should be increased in size upon exiting the boiler at the end of the prebend
kits to properly suit the system. Table 5 provided shows the correct piping sizes
based on the maximum
fl
ow rate for piping and system Delta T.
Upon exiting of the boiler cabinet all external piping must be properly supported.
The boiler and internal boiler piping are not intended to support the system
piping.
The factory supplied pressure relief valve and temperature and pressure gauge
must be installed before any shut-off valves.
The pressure relief valve and the temperature and pressure gauge must be
installed as shown in fi gures 9a and 9b.
NOTICE
i
NOTICE
i
NOTICE
i
NOTICE
i
NOTICE
i
Installed pressure relief valve and T/P gauge on the side fi gure 9a
Installed pressure relief valve and T/P gauge on the top fi gure 9b
Internal boiler drain connection
fi gure 10
Pipe size
Maximum
flow rate
(gpm)
10°F
''
T
(btus)
20°
'
T
(btus)
30°F
'
T
(btus)
40°F
'
T
(btus)
1"
8
40,000
80,000
120,000
160,000
1 ¼"
14
70,000
140,000
210,000
280,000
1 ½"
22
110,000
220,000
330,000
440,000
Pipe size and related fl
ow
rate
table
5
