Aegis Sequencer
INTRODUCTION
L-OMM-015_0B
• 8/8/2023 Technical Support • (800) 433-5654 • Mon-Fri, 8 am - 5 pm EST
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1. INTRODUCTION
The Aegis Sequencer controller can be used in all systems where several Aegis heat pumps are installed
parallel to each other, using the same water tank system, and requiring a common control point. The
system can include up to six units, and can manage a secondary side water pump. The device can detect
the thermal demand of the tanks and activate the appropriate number of units.
The required number of units is determined by temperature probes located in the tanks. The probes
determine how much power, and how many steps are activated, which will detect water temperature
stratification in the tanks.
The settings can be changed via the user interface (graphic display) or BMS.
2. System Composition
The system consists of the Aegis Sequencer electrical panel equipped with water temperature probes to
be placed in the water tanks (see below), as well as digital I/O to dialogue with third-party building
automation systems. An ethernet connection between the Sequencer and the heat pumps is required.
The Aegis Sequencer ships with the following items:
•
Sequencer
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(9) 10 k
Ω
temperature sensors
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A packet containing the user manual and electrical schematics
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Enclosure key, tied to the power switch
2.1. Electrical Connections
During installation, refer to the wiring diagram in Appendix B.
The probes should be positioned as follows:
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BT1 probe: in the coldest point, i.e. in the lower part of the storage group (return circuit side
towards the units), or at the point where the maximum load set point management of the
storage system happens
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BT2 probe: in the hottest point, i.e. in the upper part of the storage group (with the side of the
delivery circuit towards the secondary)
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BT3 probe (secondary side pump management): at the outlet of the heat exchanger
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BT4
– BT9 probes (power step requirement probes): to be distributed evenly between the tanks
A total of N+1 sensors will be required, where N is the number of heat pumps.
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BTL probe (anti-Legionella probe): at the inlet of the heat exchanger
