HeatNet Smith Series, User Manual, Page: 45 / 82

COMMUNICATIONS HeatNet Control REV 1.38-1
Page 45
Log Entry
The Smith HeatNet control contains a log that records the
major activity (events) in the operation of the boiler. This
activity includes interlock faults, boiler starting and
stopping events, power cycles, misc. faults, and types of
calls-for-heat (control inputs). Setting the time clock to an
accurate time and date is very useful when events are
recorded, since the control will time stamp each snapshot. If
the system is configured to run with HeatNet, then only the
Master boilers SYSTEM TIME needs to be entered. The
Master will then set the time on all Member boilers.
The log is primarily used as a troubleshooting and
diagnostic tool, but may be used as a performance tool to
view run time cycles. Refer to the
Control Pro Software on
the Smith website :
http://www.Smithboiler.com/
An event in time of the boiler’s state is presented via
multiple screens. Each screen event can be stepped through
using the arrow keys.
The top line displays the time and date the event occurred.
In the top right corner, the event # is displayed so that easy
indexing can be done using the arrow keys. The second line
displays the Water temperature of the boiler’s output
(supply) and the Setpoint temperature. The third line
displays the
O utside A ir temperature, and the Modulation
%. The bottom line is used to record the control state of the
boiler.
The control state is defined as the Boiler(s) that is
running, the Circulator Pump state, and the ignition
condition (Main Valve, Pilot Valve, Blower, and the
Ignition alarm). The # of boilers that are displayed is
limited to 7 if the boiler is the MASTER. If boilers #8 and
up need to be viewed, the
Boiler Control Pro
software
will need to be used. The Last 2 characters on the fourth
line indicate the heating mode the control is in. The
modes are:
NC = No Call for Heat
HD = Heat Demand (MASTER and Local modulation
control using PID control, MASTER and
MEMBER)
RM = Remote Modulation from 4-20ma input
HF = High Fire from
ALL T-inputs closed or the AA
input
1T = Low Fire from any 1 T-input closed (Low Fire
or High Fire)
2T = Mid Fire from any 2 T-inputs closed (Low fire or
High Fire)
OP = Option input Active
HT = H-Net Control using the Heat-Link
communications cable
The bottom line is also used to indicate an interlock or
limit that has tripped. It may also indicate a sensor that
has failed. When this occurs, the normal bottom line in
the display is not visible, and the sensor fault is displayed.
For details on messages that appear on the fourth line: See
Appendix B .
Figure 37 Log Entry Display
T
im
e
S
ta
m
p
E
v
e
n
t
n
u
m
b
e
r
Water Setpoint
Modulation PWM %
M = Main Valve open
P = Pilot Valve open
B = Blower ON
P = Circulator Pump
Boiler 1 On
Boiler 2 On
Boiler 3 On
Outside Air
Temperature
NC = No Call for Heat
HD = Heat Demand
RM = Remote Mod 4-20ma
HF,1T, 2T, 3T = T-inputs Fire Rates
HT = H-NET Control
H= Honeywell Alarm
Boiler 7
S = System Pump
D = DHW Pump
(Ver 2.x control)
SET
: 0 5 : 4 2 P
H2O 1 2 7 °F
MOD%
1
3
1 0 / 1 4
1 3
OA
6 5 °F
1 4 0 °F
5 7
P
- - - - - -
H HD
MPB