Freestyle 2 Series Manual page 68

FreeStyle
®
2
series
28 DHW Settings
Figure 95
DHW curve - FreeStyle 120
Freestyle 120 - DHW PRODUCTION
G.P.M.
12
11.5
11
10.5
10
9.5
9
8.5
8
7.5
7
6.5
6
5.5
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100105
The "D" Parameter codes below are part of the normal Control Operation and typically appear during Start Up.
This a "Timed" or "Auto Recycle" event.
• D1....the boiler is / has finished the call for Domestic Water heating, and is in the transition to either
standby mode or central heating mode.
• D2....the boiler has reached the required water set point, and the firing has stopped / with a call for Cen-
tral Heating still applied by the T-Stat to the boiler. Circulators will continue to operate and the boiler is
monitoring the two internal water sensors (return & discharge) waiting for a water "Delta-T" to return...at
that time the boiler will re-fire if need be.
• D3....the boiler has made 3 tries for ignition and has failed to ignite. A re-trial ignition cycle / delay is in
effect for 3 more tries to ignite/restart boiler operation.
Parameter Description
D1
After cycle of Domestic water mode, D1 will be displayed.
D2
When required boiler water set - point is reached D2 will be displayed.
D3
After an attempt for ignition, re-trial ignition delay is in effect (D3 is displayed).
* Check for proper fuel supply.
* Remove and check ignitor for proper gap, 5/32", replace if disfigured, check combustion setting Natural gas or LP.
* Insure condensate is draining properly.
* Insure venting size and length are correct and unobstructed.
68
-
wall mount gas fired water boiler
(Combi Only)
Freestyle 120
Delta T (ºF)
–
boiler manual
(continued)
Figure 96 DHW curve - FreeStyle 155
Freestyle 155 - DHW PRODUCTION
G.P.M.
15
14.5
14
13.5
13
12.5
12
11.5
11
10.5
10
9.5
9
8.5
8
7.5
7
6.5
6
5.5
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
Freestyle 155
Delta T (ºF)
Part number 550-142-950/0122