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• Some DHW parameters are accessible but should never be adjusted. This is indicated with N/A at the
description. Ensure factory settings are always maintained at these parameters
• DHW parameters that are available at the user level are indicated below
• This chapter is not available on combi boilers or if there is no sensor at terminals 16 and 17 (DHW priority)
Description Range / Explanation
Setting
User
Access
1
DHW economy
(nighttime
setback) temp
°F to DHW
temp
Temp for DHW during night time
setback.
100°F Yes
NOTE: 100°F=Default at shipment, 68°F=Default at System Reset
2
DHW Legionella
Protection
Legionella protection
Yes
-Su, ALL
only or every day (ALL)
3
DHW Legionella
t available if PARA 2 is
2:00
(am)
No
4
DHW Legionella
operation temp
°F to DHW
temp
not available if PARA 2 is
OFF. Do not adjust lower than
140
°F
149°F No
16 N/A
This should not be altered
131°F Yes
DHW Parameters
6 DHW max temp
°F to 176°F
boiler PARA 31. 149°F No
NOTE: This value will go to 203°F but the boiler will never eclipse 176°F; NOTE: During a split load between
heat and DHW, the supply temp is based on DHW needs—do not use on direct-coupled in-floor radiant systems
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