Summer Mode (Stand-By Mode) - Viessmann VITOTRON 100 Installation And Service Instructions Manual

Instructions for the User
Summer Mode
INDICATOR
psi
16
Vitotron 100 Electric Space Heating Hot Water Heater Installation/Service
(Stand-by Mode)
DETAILS
The control panel is off and the stand-by mode indicator (dot) blinks only.
Pressure level [pounds/square inch].
To check out the installation pressure press or
Circulation pump is active. In summer mode (heating elements turned off).
The circulating pump will operate for 15 minutes, once every 24 hours each day.
IMPORTANT
Do not shut off the power supply between heating
seasons. To set the space heating water heater to
summer or stand-by mode press and hold
button for 3 seconds.
When the control panel is switched to summer mode the
control panel is off and the stand-by mode indicator
remains blinking. In this mode the space heating water
heater is off but the pump is activated every day for 15
minutes.
This summer mode protects the space heating water
heater and the hydronic heating installation from being
blocked and silted up. The pump will run every day at
the same time when the space heating water heater is
switched to summer mode. For example, if you turn the
space heating water heater to "stand-by" mode at 6 p.m.
the timer will activate the pump every day for 15 minutes
starting at 6 p.m.
To set the space heating water heater back to winter
heating mode press and hold power button
seconds.
Note: In summer mode, based on U.S. national electric
rates of $.10/kWh the cost of operating the
circulating pump for 15 minutes/day will equate to
approximate usage of $.08 / month on the highest
speed.
MODE VIEW
PRESSURE VIEW
STATUS PUMP VIEW
power
for 3