POWER VTX
®
WATER HEATER
30
PV500-68 06/16
10.8 Scheduled Setback (USER Level Access)
The SCHEDULE MENU allows the user to program this water heater to automatically lower the operating set point
for times when a facility is not occupied or the use of hot water is curtailed.
1. Enter the SCHEDULE MENU. Activate the schedule function by first turning on the HEAT SCHD using the
arrow buttons.
2. There are four setback schedule types. 24hr, 5-2, 5-11 and 7DAY. The 24hr schedule is a daily schedule that
will follow the same program every day of the week. The default schedule on the SCHD TYPE screen is the
24hr. All other schedule types are selected using the arrow buttons. The 24hr schedule allows for a 2 or a 4
EVENT/DAY. With the 2 event day, the user can have one occupied time and one unoccupied time per day.
The 4 event day will allow for two occupied times and two unoccupied times per day.
NOTE:
The unoccupied set points are programed in the SETUP MENU in the same manner that the occupied
set point is adjusted.
For example, a 24hr type and a 4 event day schedule might look like this:
•
The
1
st
occupied time begins at 6:00am and the 1
st
unoccupied time begins at 11:00am, therefore, between
the hours of 6:00am and 11:00am the occupied set point will be used.
•
The
2
nd
occupied period begins at 4:00pm and the 2
nd
unoccupied time begins at 10:00pm.
•
Between
the
1
st
unoccupied time of 11:00am and the beginning of the 2
nd
occupied period, the unoccupied
set point will be used.
•
At 4:00pm the 2
nd
occupied period will begin and the occupied set point will be used until the 2
nd
unoccupied
period begins at 10:00pm.
•
From 10pm until 6:00am, the unoccupied set point will then be used.
Notice that schedule times and set points are identified as occupied (
Occ
) or unoccupied (
UnOcc
) here.
3. The 5-2 schedule type gives the user the ability to program a 2 or 4 EVENT/DAY but will also allow for one
schedule to be followed Monday – Friday and then another Saturday and Sunday.
4. The 5-11 schedule type gives the user the ability to program a 2 or 4 EVENT/DAY but will also allow for one
schedule to be followed Monday – Friday and then separate schedule Saturday and another Sunday.
5. The 7DAY schedule type gives the user the ability to program a 2 or 4 EVENT/DAY for each day of the week,
Monday through Sunday.
