Install Instructions

12
CHAPTER 3
CHAPTER 3 - WATER HEATER START-UP
3.5. DHW Frost Protection
The Indirect Water Heater (IDWH) Sensor used in the
Prestige Excellence provides a Frost Protection feature
to the water heater. The Frost Protection feature is de-
signed to protect the Excellence water heater from
a potential freeze up. Frost Protection will generate
a DHW call once the IDWH temperature falls below
42º F [6ºC]. Once Frost Protection is activated, the inter-
nal circulator and diverter valve will direct water ow
to the water heater and the burner will re. Frost Pro-
tection will end once the IDWH temperature is raised
to 60ºF [16ºC]. This feature is always active and cannot
be disabled. Frost Protection is still active even if DHW
operation has been disabled.
3.6. CTRLMax Factory Settings
DHW SETTING
FACTORY
DEFAULT
MINIMUM
SETTING
MAXIMUM
SETTING
EZ SETUP RESET INSTALLER RESET
DHW Operation Enabled
3
Demand Type Sensor
DHW Boiler Setpoint 168°F [75°C] 96°F [35°C] 188°F [87°C]
3 3
DHW Setpoint 140°F [60°C] 68°F [20°C] 168°F [75°C]
3 3
DHW On Dierential 6°F [3°C] 4°F [2°C] 18°F [10°C]
3
DHW Storage Adder 28°F [15°C] 10°F [5°C] 54°F [30°C]
3
DHW Post pump time 2 Minutes Off 30 minutes
3
DHW Priority Timeout O Off 120 Minutes
3 3
DHW Priority Enabled
3
DHW Call Blocking 1 Minute 0 Minute 30 Minutes
3
DHW to CH Call Blocking 0 Minute 0 Minute 30 Minutes
3
Antilegionella Function Enabled Enabled Disabled