SCI ERV-24-SUPER User manual

Owner’s Manual
ERV-24-SUPER
With FanCycler®
Doylestown, PA 1 902 USA
Phone: [phone] - Fax: [phone]
Email: [email protected] - www.scillc.com
Cat. P048046
Rev. 2.4 07.06

Protected by one or more of the following patents:
US 5,547,017; 5, 1, 06; 6,431,26 ; CA 2,245,135
Please read this manual carefully before installation and use.
Index
Operating manual 1
On/Off 1.1
M de selecti n 1.2
Temperature adjustments 1.3
L cking the therm stat’s butt ns 1.4
Pr gramming 2
Therm stat display 2.1
Pr gramming defaults 2.2
Step by step pr gramming chart 2.3
Overriding set temperature 2.4
Putting the pr gram n h ld 2.5
RT04 – Rem te C ntr l Unit 3
2

1. Operating Manual
1.1 On/Off button
•Press the On/Off butt n t activate the therm stat - The w rd "ON" will
appear n the display next t the measured temperature.
•Press and h ld (4 sec) the On/Off butt n t deactivate the therm stat - The
w rd "OFF" will appear n the display.
1.2 Select button
1.2.1 System Mode (Cool, Heat, Cool/Heat, Fan)
•Press the Select butt n nce.
•Use the (+) r (-) butt ns t switch between m des:
oC l –“C l” will appear n the display.
oHeat –“Heat” will appear n the display.
oEmergency Heat –“E.Heat” will appear n the display (Available in HP type
nly).
oIn Emergency Heat, the heating element will turn n and the c mpress r will
turn ff.
3

oThis pti n is suitable f r very c ld days when the heat pump is active in
heat.
oC l/Heat (Aut change- ver) – C l” and “Heat” will appear n the display.
oFan –“Fan” will appear n the display.
4

1.2.2 Fan Mode
•Press the Select butt n a sec nd time.
•Use the (+) r (-) butt ns t switch between fan m des:
oFan – “Fan” will appear n the display - The fan
will w rk c ntinu usly.
oAut Fan – “Aut Fan” will appear n the display -
The fan will w rk depending n c ling r heating demand.
•Press the Select butt n a third time t exit t n rmal display m de.
The unit will aut matically return t n rmal display m de if n changes are made
within 30 sec nds.
5

1.3 Temperature set-point adjustment
In Cool mode
•Press the (+) r (-) butt ns - the temperature will flash and “COOL”
and “SET” will appear n the display.
•Change the c ling set-p int temperature using the (+) r (-) butt ns.
•Press the Select butt n t exit r wait t return t n rmal display
m de.
In Heat mode
•Press the (+) r (-) butt ns - the temperature will flash and “HEAT” and
“SET” will appear n the display.
•Change the heating set-p int temperature using the (+) r (-) butt ns.
•Press the Select butt n t exit r wait t return t n rmal display
m de.
6

In Cool/Heat mode (Auto change-over)
•Press the (+) r (-) butt ns - the temperature will flash and “COOL” and “SET” will
appear n the display.
•Change the c ling set-p int temperature using the (+) r (-) butt ns.
•Press the Select butt n again r wait - the temperature will flash and “HEAT” and
“SET” will appear n the display.
•Change the heating set-p int temperature using the (+) r (-) butt ns.
•Press the Select butt n again r wait t return t n rmal display m de.
The therm stat keeps a minimum differential f at least 2 degree between the Heat
set-p int and the C l set-p int, with Heat always being less than C l.
7

1.4 Locking the Thermostat’s Buttons
L ck the therm stat’s butt ns t prevent any unwanted changes by an unauth rized pers n.
Lock the thermostat
•Press the On/Off butt n t turn the therm stat ON.
•Press and h ld (15 sec.) the Select butt n until “LOC” appears n the display.
Unlock the thermostat
•Press and h ld (15 sec.) the Select butt n until “UnLO” appears n the display.
•Press the Select butt n 2 m re times t exit t n rmal display m de.
8

2. Programming
The therm stat is 5-1-1 pr grammable:
5-M nday thr ugh Friday, 1-Saturday, and 1-Sunday all have individual pr grams.
There are f ur pr gram peri ds per day: 1-Wake, 2-Day, 3-Return, 4-Sleep
If y u want t perate the therm stat manually, with ut the pr gram, y u can easily disable
pr gramming.
T disable the pr gram, press and h ld (5 sec nds) the Prog butt n – the w rd Pr gram will
disappear fr m the display. T re-enable the pr gram, press and h ld the Prog butt n again. See
Secti n 2.5 bel w.
N te: If the therm stat was setup t be N n-Pr grammable by the installing technician,
c ntact the installer, r refer t the Technician Settings d cument f r enabling the Pr gram via
the internal DIP switch.
9

Bef re pr gramming y ur therm stat y u sh uld be familiar with the display f the unit:
2.1 Thermostat Display
1. Temperature digits
The n rmal display will sh w the temperature in the r m.
When (+) r (-) is pressed, it will flash and sh w the set-p int
f r the selected system m de.
2. Days of the week
When setting the pr gram, it will display the peri d that y u
are setting.
Example: When display sh ws: MON-TUE-WED-THU-FRI,
y u are setting the weekdays pr gram.
(The pr gram will repeat n each f these days).
In n rmal display m de, nly the actual day f the week will be displayed.
3. Real time clock, AM/PM
N te: When changing the pr gram, "COOL" r "HEAT" will be displayed in place f the time t
indicate which system m de y u are setting the temperature f r.
4. Program period (the one currently being adjusted will be indicated)
•Wake 1st pr gram f day.
•Day 2nd pr gram f day.
10
Cool
Heat
Auto
Fan
o
F
Program: wake
DayReturnSleep
SuMoTuWeThFrSa
Set
ON
OFF
AM
PM
1
2
3
4
5
6
7
8