26
11.
Installation
Complete the installation with all necessary parts, valves, non-return valves, strainers, air separators and
expansion vessel, and connect the low velocity header to the heating installation (see hydraulic examples).
Mount the flue gas and air supply lines according to the recommendations of the S-CB
+
/ S-CB PX 120
manual and the recommendations in chapter 10. “Flue gas and air supply” of this manual.
Complete all wiring of the boilers according to the boiler manual.
First the “Master” boiler has to be determined. Connect all wiring of thermostat, outside temperature sensor,
flow temperature sensor and eventually system pump to the Master.
Also, a two-wire cable has to be connected between all boilers (cascade-connection).
Fill the installation with water and follow all recommendations of the S-CB
+
manual. Insulate all water piping
as far as necessary.
In the following, two installation examples are given.
Figure 11.
Hydraulic example, heating only. NB! For S-CB PX 120 boilers, P1 is an external pump.
P1
P1
S3
P3
VALVE
AIR SEPARATOR
DIRT SEPARATOR
SIPHON
STRAINER
(WATER FILTER)
PRESSURE RE-
LIEF VALVE
PUMP
AUTOMATIC AIR
VENT
EXPANSION
VESSEL
LOW LOSS
HEADER
HEATING
ZONE
BOILER
BOILER
NON RETURN VALVE
(low resistance type)
NOT SPRING LOADED
OUTDOOR SENSOR
Содержание S-CB 100
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