9
Connection to the installation, safety pump
5.0. CONNECTION OF THE BOILER TO THE CENTRAL HEATING INSTALLATION
The boiler has to be connected to the open system according to the Image 4. All
connections from the boiler to the open expansion vessel and from the open
expansion vessel to the boiler have obligatory to be covered by the thermal
insulation of min. 40mm (stone wool or equivalent insulating material). If the
expansion vessel is situated outside the heated area, it has to be insulated. The
dimension of the open expansion vessel is determined by the quantity of water
inside the installation, i.e. approximatly 7% of the total water quantity inside the
entire installation.
5.1. CONNECTION OF THE BOILER TO THE OPEN EXPANSION VESSEL
5.2. BOILER SAFETY PUMP
In order to minimize the condensation inside the boiler a safety line with an safety
pump has to be build in (Image 5.). Activating and disactivating of the safety pump is
steered by the pipe valve situated on the boiler's outlet, approx. 300 mm from the
safety line connection point, towards the installation with an functioning field of 0°C
to 65°C. Safety line suggestions according to the boilers' capacity is shown by the
table „TECHNICAL DATA“. Safety line has to be covered by thermal insulation, min.
40 mm stone wool or equivalent insulating material.
5.3. CONNECTION OF THE BOILER TO THE CENTRAL HEATING SYSTEM
The central heating system to be connected to the boiler has to be performed
according all professional and security standards. The regulation of the room
temperature can be solved in few ways, but each of solutions has to be worked out
in order the outlet water operating temperature does not reach the value below
60°C. It is recommended to build in the 4-passes manual valve. In order to
minimize the water steam condensation of the flue gas, it is necessary the
circulating pump of the heating circuit/s to be activated and disactivated by means
of the pipe thermostate set up to min. 75°C. The system can also be regulated by
means of any other appropriate system. The pipe thermostat has to be situated on
the boiler's inlet right next to its connection to the boiler. The general connection
plan is figured on the Image 5.
20
Additional equipment-fan
13.3. CONNECTION OF THE FAN TO THE ELECTRICAL POWER NET
This connection has to be performed only by an authorized person. Technical data
concerning the motor are attached in the technical manual and are also written on
the motor body. The rotation sense of the fan is indicated on its casing and has to be
considered. The cable has to be protected from mecanical or other kind of
damages, set in the proper way, in order to avoid any damages. Connection plan to
the electrical power net is shown on Image 7., page 22.
13.4. STARTING THE FAN
First to be checked if the fan is properly fasten to the cyclone. Revolve the fan
manualy and find out if it is rotating without touching any obstacle. The rotor is not
allowed to touch its housing! During its first start up it is necessary to start the fan
when the draught regulator is closed or otherwise closed air flow, in order to enable
the motor to reach the speed easier. During the first short start up it is necessary to
control the fan rotation sense (sense of the arrow). It has also to be checked if
during the start up some kind of strange noices are appearing. Check the vibrations
and find out if they are exceeding the normal range.
The damper for the balancing of the fan which is situated on the flue exhaust of the
boiler and should be put in the position which enables the flue exhaust gases
temperature to reach minimum 160°C - 180°C at nominal thermal output.
While the motor is running it is necessary to control the temperature of the motor
and its bearings. The motor housing temperature should not exceed 70°C (constant
operation). If the bearings are getting warmer the fan has to be stopped and the
reason for the exceed temperature has to be found out.
13.5. TEMPERATURE OF THE FAN BEARINGS
13.6. MAINTAINING THE FAN
After each 6000 working hours, i.e. once in the year it is necessary to: check the
general condition of the fan; check all elements and screw joints; check all welding
points, especially those on the rotor; check the wear and tear of the motor housing
and of the rotor; check the condition of the compensator and belonging steerings
(tightness, wear and tear). In case the spare parts are needed, they have to be
cleaned previously.
Technical manual EKO-CKS Technical manual EKO-CKS
