Resource Data Management PR0018-PHI Guía de instalación descargar pdf (Pagina 48)

Warning

Please Note

The specifications of the product detailed on this

Set-Up Guide may change without notice. RDM

Ltd. shall not be liable for errors or for incidental

or consequential damages, directly and indirectly,

in connection with the furnishing, performance or

misuse of this product or document.

Ensure that all power is

switched off before

installing or maintaining

this product

Revision 2.7 Page 48 of 83

Mercury Plant Controller Installation Guide

P406/456

Day Reduction

Reduces the inverter output by this amount when the timer is

not in its night zone.

P407/457

Day Pressure Limit

Pressure set-point to disable the day reduction feature. Day

reduction is disabled above this level and enabled below it.

P408/458

Transducer fail Level

Sets the output level of the inverter if the transducer fails

P409/459

Control Type

Selects between Fixed, Floating or Drop Leg control for

Condenser control only.

Fixed uses the set-point parameter as its target (P-20/40)

with the corresponding pressure transducer.

Floating uses the temperature of a selected probe converted

to a pressure as the set-point along with the corresponding

pressure transducer.

Drop leg uses the temperature of probe mounted on the drop

leg to calculate control pressure and uses the set-point

parameter as its target (P-20/40).

P410/460

Float Select

Selects the probe that measures the “floating” temperature

(Note : This would be fitted to the Air On of the Condenser)

See Note Floating Head Pressure

P411/412

Sect 1 / 2 drop Select

Selects which probe is used to measure Drop Leg

temperature. See Note Drop Leg

P414/461

Pressure at 0

O

C

Used to program the temperature to pressure conversion for

floating pressure use.

P415/462

Pressure at 10

O

C

Used to program the temperature to pressure conversion for

floating pressure use.

P415/463

Pressure at 20

O

C

Used to program the temperature to pressure conversion for

floating pressure use.

P417/464

Pressure at 30

O

C

Used to program the temperature to pressure conversion for

floating pressure use.

P418/465

Pressure at 40

O

C

Used to program the temperature to pressure conversion for

floating pressure use.

P419/466

Pressure at 50

O

C

Used to program the temperature to pressure conversion for

floating pressure use.

P420/467

Low Limit

Stops the floating pressure target from going below this level

P421/468

High Limit

Stops the floating pressure target from going above this level

P422/469

Condenser offset

Used to set a condenser differential, which is added to the

incoming temperature to produce a “floating” set-point

P438/439

Sect 1 / 2 Split

Set to “On” to enable Condenser Split feature.

P430/431

Sect 1 / 2 Split Temp

If outside ambient air temperature falls to this value then the

condenser split relay will come on. Note the Condenser Float

temperature probe is used as the air temperature reference.

P432/433

Sect 1 / 2 Split Temp Diff

Diff above for the split temp feature (P-430/431). If outside

ambient air temperature rises above Sect 1/2 Split Temp

parameter plus Sect 1/2 Split Temp Diff parameter then the

Condenser split relay will go off

P434/435

Sect 1 / 2 Split Pressure

If the discharge pressure rises above this setting then the

condenser split relay will be forced off regardless of

temperature.

P436/437

Sect 1 / 2 Split Pressure Diff

Diff below parameter for Split Pressure feature (P-434/435).

If the pressure for Section1/2 falls below Sect 1/2 Split

Pressure setpoint plus Sect 1/2 Split Pressure Diff parameter

then the condenser split relay will return to normal operation

(status depends on P-430/431).

P440/441

Sect 1 / 2 Heat Reclaim

Enable for Heat Reclaim. See : Relay Outputs

0 = Off (Not Used)

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