TriangleTube 399 Solo - Manual (Page 59)

53
Outdoor Reset Control
Graph 1 illustrates Parameter 4 adjusted to 140ºF target temperature at 0ºF outdoor
air temperature
Table 3: Outdoor Air Temperature Reset (Example)
90
20
60
100
140
180
70
64
50 30 10 0 -10
86
Bo
ile
r T
em
pe
ra
tu
re
(
F)
Outdoor Air Temperature ( F)
Parameter 4 Set Point
Parameter 10
Set Point
Pa
ra
m
et
er
1
2
Se
tti
ng
Pa
ra
m
et
er
1
1
Se
tti
ng
Graph 1: Outdoor Air Temperature Reset Curve (Example)
Note: Factory setting of Parameter 4 is 186ºF.
Outdoor
Temperature
Boiler target Temp.
Based on Outdoor Temp.
0ºF or Lower 140ºF
23ºF 122ºF
40ºF 108ºF
64ºF or Higher 86ºF