Evco EVD MVC Series User Manual

EVCO S.p.A. EV3 MVC & EVD MVC | Application manual ver. 1.0 | Code 144EV3MVI104
page 46 of 72
Selecting the timer setting mode
The setpoints for temperature, for opening the mixing chamber damper and for the fans are set by parameter t01 and according to the
current time. It is possible to change the temperature, fan speed and mixing chamber damper regulation (if present) setpoints from the
keypad or by the supervisor in the following way:
- From the keypad by pressing the SET key and changing the values tMP, FAn, dMP
- By the supervisor by changing the status of S05 (fan speed), S09 (open damper) and S18 (temperature).
In manual mode any change to these values is also reflected in the parameters for which they become final.
If the timer settings are activated, when a new timer setting starts up or if the mode is changed from manual to timer setting or vice
versa, the setpoints are altered according to the parameters set.
Manual mode ( t01 = 0)
Listed below are the setpoints used:
P07 manual temperature setpoint heating mode
P08 manual temperature setpoint cooling mode
P12 manual fan setpoint
P17 Manual mixing chamber damper setpoint.
Timer setting mode (t01 = 1)
If there is a clock error, the manual mode is activated.
The active timer setting is based on the current time scrolling back in time until no valid value is found in the parameters set for the
timer settings. If no valid mode is found (e.g. if the timer setting parameters t02-t32 have not been correctly set) the machine
operates in manual mode.
Each day of the week can be associated with a different type of day (t26-t32).
Three “day types” (A, B, C) are available each of which can have up to 4 different timer settings (t02-t25).
Each timer setting depends on the mode activated, the start time and the required comfort level.
The following comfort levels are available:
- Comfort (COM) for this mode the settings used are provided by the following parameters:
- P01 comfort temperature setpoint heating mode (winter)
- P02 comfort temperature setpoint cold mode (summer)
- P09 comfort fan speed setpoint
- P14 comfort mixing chamber damper setpoint
- Economy (ECO) for this level the temperature setpoints are taken from the comfort mode settings adding an offset; the
fan speed and damper open setpoints are controlled by the following specific parameters:
- P01+P03 economy temperature setpoint heating mode
- P02+P04 economy temperature setpoint cold mode
- P10 economy fan speed setpoint
- P15 economy mixing chamber damper setpoint
- Night-time (NIGHT) for this level the temperature setpoints are also taken from the comfort mode settings adding a specific
offset; the fan speed and damper open setpoints are controlled by the following specific parameters:
- P01+P05 temperature setpoint night-time heating mode
- P02+P06 temperature setpoint night-time cold mode
- P11 night-time fan speed setpoint
- P16 night-time mixing chamber damper setpoint
Holiday mode (t01 = 2)
If a temporary suspension of the timer setting operating mode is required (clock enabled and not incorrect) the Holiday mode can be
activated consisting of a set period starting when this is activated and ending at a particular date and time. The holiday mode can be
activated for some hours or for several months as required, with the holiday ending date and time correctly set (parameters t33-t36),
after which there will be a return to the situation prior to the holiday mode setting. The holiday begins when parameter t01 is set at 2,
in which case the setpoints of the manual mode are used:
P07 manual temperature setpoint heating mode
P08 manual temperature setpoint cooling mode
P12 manual fan setpoint
P17 Manual mixing chamber damper setpoint.

Evco EVD MVC Series Specifications

General

Brand	Evco
Model	EVD MVC Series
Category	Controller
Language	English