multiple boiler Kaskade manager
KKM2 modulating sequence controller:
A comprehensive compact wall mounted microprocessor control panel which allows the control of up
to five Strata 1 boilers. The KKM2 provides fully modulating control over the connected boilers ensuring
precise output control and maximum efficiency.
In addition to boiler control, the KKM2 can provide the drive signal for a heating circuit pump and can
provide control for stored domestic hot water (with priority over heating). Domestic hot water may be
charged using either a diverter valve or primary pump, either of which are driven from the sequencer.
External control input is via either a volt free contact (eg time switch) 0-3 or 0-10 Volt input or an
RE2132 modulating room unit plus necessary temperature sensors. Heating flow temperatures may be
either constant temperature or direct-on-boiler weather compensated variable (by means of the in-built
compensator). If more than five boilers are required to be controlled, then additional KKM2’s may be
slaved to the first control with slave capacity of four boilers per each additional sequencer. Standard
features include pump overrun and boiler load rotation.
18.1 optional matched controls (contd)
outside air
temperature sensor
If weather compensated flow temperature
(recommended for best seasonal efficiency and
comfort) is required, then the supplied air sensor
must be installed and electrically connected to the
boiler. The outside air sensor should be installed on
the exterior face of a north facing wall, away from
any artificial influences such as ventilation discharge
grilles or in direct sunlight. Ø 5mm wall fixings and
screws are provided.
domestic hot water
temperature sensor
If a hot water temperature sensor (from MHS
Boilers) is used to sense the temperature of stored
hot water, then this should be inserted into a
pocket or surface mounted to measure the water
temperature at approximately 1/3 of the height of
the hot water vessel up from the base of the vessel.
52
TOP
50
28
Outside Air Temperature Sensor
Length m
Up to 35
35 to 70
70 to 140
Cable Diameter mm
2
0.25
0.5
1.0
Cable Detail
Length m
Up to 35
35 to 70
70 to 140
Cable Diameter mm
2
0.25
0.5
1.0
Cable Detail
STRATA1
45
