Specifications

Logamax plus GB142 applications manual | 01.2012
Technical specifi cations are subject to change without prior notice
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GB142 Applications Manual
Heating curve
The AM10 has a built in linear heating curve that sets the supply
water temperature in relation to the outdoor temperature.
Top of heating curve represents the water temperature at 14°F
(-10°C) outdoor temperature. Based on type of heating system
different water temperatures are recommended for bottom of
heating curve. The boiler follows the heating curve in the AM10
up to the maximum supply water temperature set on the boiler
dial which works as a high limit (in cascades always set to
AUT). In addition the warm weather shut down (WWSD) turns
the heating system off when the temperature outdoors rises
above a certain value.
Heating curve chart in Degrees Fahrenheit:
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
-1001020304050607080
Outdoor Temperature [°F]
Supply Water Temperature [°F]
194
14
WWSD factory default
Boiler High Limit
Upper Reference point
Heating curve base point
Use high limit to prevent
radiant floor damage
from overheating.
(not in cascades)
Radiant Floor
Panel
Radiators
Baseboard
Hydro Air
Cast Iron Radiators
Fig. 6 Heating curve chart in Degrees Fahrenheit
Outdoor
Temperature
Radiant Floor
Panel
Radiators
Cast Iron
Radiators
Baseboard Hydro Air
(°F)
0 120 176 162 184 190
14 120 160 150 167 182
68 86 100 100 100 150
70 85 98 98 98 148