Lync AEGIS
2: INTRODUCTION
L-OMM-012_A
•
4/20/2022
Technical Support • (800) 433-5654 • Mon-Fri, 8 am - 5 pm EST
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of
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The anti-Legionella
function, if enabled via “ALG01 Enable anti-Legionella” is activated based on
a time band (if “ALG02 Enable scheduler” is set) or manually via web interface / BMS (“ALG16
Manual start” and ”ALG17 Manual stop”).
More in detail, the conditions necessary to make the anti-Legionella function activable are:
•
HP90 unit active (Unit ON)
•
anti-Legionella function enabled (parameter ALG01 set to ON)
•
no BTL probe alarm
•
no BT1 probe alarm
•
absence of expansion # 1 offline alarm
•
absence of expansion # 2 offline alarm
The anti-Legionella cycle consists of two phases - it is emphasized that in phase 1 the compressor
is active, and the pump modulates as per standard thermoregulation (on
“ALG10 Unit anti-
Legionella
set”), while in phase 2 the compressor is inactive, and the pump forced to default
speed (on
“ALG11 Unit phase 2 pump set”):
2.1.1. Phase 1
The "Anti-Legionella active" relay contact is closed.
The set point
“ALG10 Anti-Legionella unit set” is forced (e.g.176-194°F [80-90 ° C]);
Phase 1 ends when the BT1 probe rises above
“ALG08 Phase 1 set BT1” (default = 140°F [60 ° C])
and at the same time the BTL probe reaches at least the
“ALG09 Phase 1 set BTL” (default =
131°F [55 ° C]).
2.1.2. Phase 2
1. The "Anti-Legionella active" relay contact remains closed
2. The "Anti-Legionella phase 1 completed" relay contact is closed
3. At the end of phase 1 the compressor switches off while the secondary pump is brought to
a fixed speed “ALG11 Unit phase 2 pump set” until the BTL probe reaches the “ALG09
Phase 2 set BTL” (e.g. 70 ° C). The anti-Legionella cycle is considered concluded when
this condition persists for a period of time “ALG12 Min. time phase 2” (e.g. 1 min).
4. At the end of the cycle, the "Anti-Legionella active" and "Anti-Legionella phase 1
completed" relay contacts are opened.
