Plum ZAB-14, Service And Assembly Manual

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13.10 Connecting mixer
The regulator cooperates only with
servos of mixing valves equipped with
limit switches. It is prohibited to use
different servos. Permitted servos are
those which make a full revolution in 30
- 255 s.
Description of connecting a mixer:
- disable power supply to the regulator,
- determine the direction in which the
servo opens/closes and make an electric
connection between the mixer and the
regulator, in accordance with the
documentation provided by the valve
servo manufacturer (do not confuse the
valve direction of opening with the
direction of closing),
-
connect mixer temperature sensor and
mixer pump,
- activate the regulator and specify
appropriate valve opening time in the
mixer service settings, in accordance
with the servo documentation.
Service
settings > Mixer 1 settings > Valve
opening time
,
- disable and enable power supply to the
regulator, wait until the servo is
calibrated. During the calibration, the
servo is closed by the
valve opening
time. Calibration is signalled in the menu
Information in individual mixers’ tab,
with message ,,CAL”,
- make sure that the servo opens in the
correct direction (to do so, open menu
Information and go to tab info-mixer or
enable manual control of devices
connected to the regulator).
13.11 Connecting circulating pump
The circulating pump can be connected
to the ZAB-14 boiler regulator only after
purchasing an extension executive
module.
13.12 Connecting temperature
limiter STB
In order to prevent the boiler from
overheating due to the regulator
malfunction, an STB safety temperature
limiter, or any other appropriate for the
given boiler and heating system, should
be fitted.
Limiter should be connected to 93-95 HV
terminals. In case limiter is activated, a
blow and STB fuel feeder motor will be
disconnected.
The STB must have nominal
operating voltage of at least
~230V,
and have the
applicable certifications.
If the limiter is not installed, terminals
90, 91 should be bridged. A bridge
should be made on insulated cable with a
cross-section of at least 0.75 mm
2
and
insulation of such thickness that boiler
safety requirements are met.
Regulations demand STB
usage!
13.13 Connecting room panel
The regulator can be equipped with room
panel ecoSTER200, which can serve as:
- room thermostat (supporting up to 3 -
boiler control panel,
- alarm signalling device,
- fuel level indicator.