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3 KEY
FEATURES
3.11 The unit comprises of the following main components:-
1.
Moulded tank
– Main body of the unit, comprising of an integrated water
tank with warning pipe and weir overflow and mounting the assembly,
manifold and controller.
2.
Pump assembly
– One or two brass peripheral pump units powered by
induction motors, with integrated non-return valves and venting screw.
Mounted into the moulded tank with vibration isolating rubber mounts.
3.
Outlet manifold
– Brass manifold with pressure transducer used to monitor
system pressure and connection to the pump(s).
4.
Programmable controller
– User set controller, allowing system set up and
easy alarm connection.
5.
Wall mounting plate
– Robust stainless steel wall mounting plate allowing
quick, easy installation and removal if needed.
6.
Moulded cover
– Moulded acrylic capped ABS cover retained to the
moulded tanks with Dual Lock
TM
fastening system for quick and easy access.
3.12
Principle of operation:
The pressurisation unit consists of a break tank and
one/two peripheral pumps. The break tank is supplied with mains water from
either the left or right through a flexible hose connected to a float valve and
includes an overflow and weir to maintain an AB air gap in the tank. The unit is
connected to the heating/chiller system via another flexible hose which can
exit the unit on either the left or right. The pumps are connected to the tank
via a rubber connector.
A pressure transducer monitors system pressure and if a reduction in system
pressure is detected, the controller runs the pumps until the system is re-
pressurised to the required pre-set level. If the unit only has a single pump
connected it will run continuously until this level is reached, if the unit is a
twin pump model the pumps run in duty standby mode (the controller will
alternate which pump starts first to even the wear on the pumps). The pumps
are fitted with non-return valves to ensure system pressure is maintained once
pressurised.
1
Fig. 3
2
3
4
5
6
Summary of Contents for Duomat-E Series
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