ECOFEL BOILER SERVICE MANUAL
10.4 Homocentric Flue Kit Application:
In homocentric (Standard) flue kit connections, two metal rings for limiting the exhaust gas pipe are supplied in the
user’s manual bag. Depending on the flue kit length, the corresponding ring should be placed or installed in the
exhaust gas pipe. In the table below, usage of the metal rings according to flue kit length is given. Improper usage
of the metal rings shall impair combustion and cause decline in efficiency. Therefore, care should be taken for proper
usage of the metal rings.
Homocentric flue kit pipes can be installed in compliance with installation requirements.
In the above table, horizontal lengths of homocentric flue kit pipes with and without flow limiting ring.
Note: Each 90 degrees elbow is equivalent to 1m flue kit loss, i.e. it can be assumed that for each elbow installed 1m pipe is added to the system.
10.5 Installation of Hydraulic Systems:
Fasten water inlet and outlet pipes as defined below.
Heater system and usage water system connections are described below.
Heater stream piping
¾”
Usage hot water outlet
½”
Gas Inlet
¾”
City Water Inlet
½”
Heater Return Piping
¾”
• On the radiator return line ¾” strainer and on the top and bottom of the strainer ¾” full passage ball valves should
be installed.
• At the mains water inlet ½” strainer and ½” full passage ball valve should be installed.
• To the gas line of the appliance ¾” gas valve and ¾” gas filter should be installed.
• If there is an extra hot usage water generator connected to the piping, it should be blocked with blind plug or valve
after the installation is completed.
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Revision Date: 29 February 2008, Rev. No: 0
Throttle shim
Flue Kit Horizontal Length
(m)
THROTTLE SHIM DIMENSIONS
90 Degrees Elbow Loss
1 m less
Ø 41
1 meter
between 1m and 2m
Ø 40
more than 2 meters
Shall not be installed
