Hitecsa Advance EQS Serie Manual Del Usuario página 63

Inactivity time of compressors after which the pump is stopped and the unit
1
is set to stand-by
Forced pump operation time for temperature assessment
2
Stand-by time between one water temperature analysis and the next
3
When the primary pump type set in screen Je01 is INVERTER, in the next screen
it is possible to set which voltage to use.
III.1.5.2 Primary pump with VPF accessory
With the VPF (Variable primary flow) accessory, the primary pump is not managed
with a simple on-off command, but is combined with an inverter and regulated to
keep the temperature difference stable between the return from the system and
the machine input.
Pump speed when the unit is on standby
1
Pump speed when the unit has a full load
2
Delay between pump acceleration starting and compressor start-up when
3
requested
VPF pump period at fixed speed upon start-up of each compressor
4
Water temperature threshold above which the pump is regulated at
1
minimum speed in cooling mode
Water temperature threshold below which the pump is regulated at
2
minimum speed in heating mode
Differential with respect to the threshold within which the pump modulates
3
at increasing speed until normal modulation is restored
ΔT between system return and unit inlet to be maintained
1
Minimum pump regulation speed
2
Maximum pump regulation speed
3
USM_CONTROL EQS_2335a21275_208549_210701_ES-EN-FR-DE-IT
(only with pump operation
"on demand")
1
2
3
1
2
3
4
1
2
3
1
2
3
Regulation PID:
regulation band
integrative time
drift time
III.1.5.3 Disposal unit pump (only for water-water
Disposal pump operation mode:
1
- ALWAYS ON: the pump remains on if the unit is on and there are no
blocking alarms
- on COMPRESSOR REQ.: the pump is only switched on when
temperature control requires a compressor to switch on
Enables the anti-block function that requires 30" of forced pump operation
2
in case of inactivity lasting 7 days.
Minimum delay between pump switching on and a compressor switching on
3
Delay between supply of the valve/inverter modulation voltage and
4
activation of the pump relay (only with VPF option).
Minimum time of forced pump operation after all compressor or the unit
5
have switched off.
Flow alarm enable during summer operation
1
Flow alarm bypass on pump start-up
2
Flow alarm bypass during pump operation
3
Interval between pump switch-on attempts in case of no flow
4
Accumulated work hours of a pump to request switch-over with a twin
1
pump. The switch-over only takes place with compressors off.
When switch-over is required, time between switching off the pump and
2
switching on the twin one. If a negative value is set, a simultaneous work
period is required.
Manual override command for pump change request
3
On screens Je15..Je18 it is possible to change the parameters that manage a
pump or modulating valve on the disposal side. The condensation control set-
points that control aims for, can be edited in the Condensation control menu
(paragraph III.1.6.4).III.1.6.4
Number of modulating outputs:
1
- SINGLE: a single modulation for all circuits
- MULTIPLE: one modulation per circuit (available only for units with screw
compressor)
Order of activation between the supply of the modulation voltage and the
2
activation of the relay:
- INVERTER: first pump activation, then modulation
- VALVE: first modulation, then pump activation
Delay between the supply of the modulation voltage and the activation of
3
the relay or vice versa
85
CONTROL EQS
units)
1
2
3
4
5
1
2
3
4
(only with double disposal
pump option)
1
2
3
1
2
3