Pump
The control returns to Fixed
Display #1, showing the actual
supply temperature, and will
then be in Operating Mode
Press
test
button
S
S
M
W T F
T
Stage 2
Setpoint
Actual
Supply
Target
Supply
F
S
TEMP
OCC
S
M
W T F
T
Auto
Stage
1
2 3 4 5 6 7 8
Off
1
2
3
4
5
6
7
8
9
Stpnt
Reset
Auto
Stage
1
2 3 4 5 6 7 8
Off
1
2
3
4
5
6
7
8
9
Stpnt
Reset
Rotate
Off
1
2
3
Auto
Stage
1
2
3 4 5 6 7 8
Off
1
2
3
4
5
6
7
8
9
Stpnt
Reset
Rotate
Off
1
2
3
Auto
Stage
1
2
3 4 5 6 7 8
Off
1
2
3
4
5
6
7
8
9
Stpnt
Reset
S
S
M
W T F
T
Comb. air
Turns off
after 10
seconds
On for
10 seconds
unless
paused
Stage 1
Test
S
S
M
W T F
T
The Control Must
Show Fixed Display
#1, 2, 3 or 4
See page 3
Heat
Demand
Stays on
through
routine
1
2
Option for 5 minute pause –
pause Stage 1
Stage One – Off
Stage Two – Off
Pump
Heat
Demand
Pump
S
S
M
W T F
T
Stage 1
S
S
M
W T F
T
Stage 2
Optional pause in
test routine is
allowed only when
there is a Heat
Demand signal
Press Test button
"Test" light will
flash and pump or
boiler will run for 5
minutes or until
Test button is
pushed again
Option for 5 minute pause –
pause Stage 2
Option for 5 minute pause –
pause pump
The sequence repeats
for all 8 stages
?
Leave
pump on?
?
Test stage
one?
?
Test stage
two?
Option for 5 minute pause –
pause combustion air damper
Combustion air
damper opens and
remains open
through test routine
PRGM
F C
S
TEMP
T I M E
USE
ROOM
OUTSIDE
AMPM
UNOCC
OVR
S
M
W T F
T
1
2
Setpoint
Actual
Supply
Target
Supply
Step Seven
Operational test of control functions - Test button
The Eight Stage Boiler Control 258 has a Test button which can be used
to test the main control functions any time there is a "fixed display"
showing. When the Test button is pushed, the control automatically runs
through this test procedure. If a fault is detected, the display shows an
Error Message. These Error Messages are listed on page 14.
Full Display and red temperature indicator lights on
At the start of each test routine and on power-up, the full display and all
of the red temperature indicator lights are switched on for approximately
5 seconds. During this time the control searches for sensor faults and,
if no faults are found, proceeds to the next step. If a sensor fault exists,
the control exits the test routine and the display will show an Error
Message.
See page 14.
Power, Test, Comb. air light on - Display = "C A"
The control signals the combustion air damper to open (whether there
is one connected or not) and will wait for 10 seconds before:
(a) — proceeding to the next step,
OR (b) — During the 10 seconds, if
there is a Heat Demand or Setpoint Demand signal and the Test button
is pressed, the test routine will be halted, the "Test" light will flash, and
the control will be held in a pause mode for up to 5 minutes. During this
time, the combustion air damper will remain open. After the 5 minutes,
the control will automatically exit the test routine and enter the normal
operating mode. If there is no Heat Demand, the control will not allow
a pause and will proceed to the next step of the test routine. Pushing the
Test button during the 5 minute pause will allow the control to proceed to
the next step of the test routine immediately. The open signal (and
"Comb. air" light) remains on for the duration of the test routine.
Power, Test, Comb. air, Pump light on - Display = "P"
The control turns on the system pump for 10 seconds and:
(a) — proceeds to the next step,
OR (b) — During the 10 seconds, if
there is a Heat Demand or Setpoint Demand signal and the Test button
is pressed, the test routine will be halted, the "Test" light will flash, and
the control will be held in a pause mode for up to 5 minutes. During the
5 minutes, the System pump will remain on. After the 5 minutes, the
control will automatically exit the test routine and enter the normal
operating mode. If there is no Heat Demand, the control will not allow
a pause and will proceed to the next step of the test routine. Pushing the
Test button during the 5 minute pause will allow the control to proceed to
the next step of the test routine immediately.
Power, Test, Comb. air, Pump , Stage 1 light on - Display ="b 1"
If there is a Heat or Setpoint Demand, the system pump will remain on.
The control will turn on stage 1 for 10 seconds and:
(a) — proceed to the next step,
OR (b) — During the 10 seconds, if there
is a Heat or Setpoint Demand signal, and the Test button is pressed, the
test routine will be halted, the "Test" light will flash, and the control will
be held in a pause mode for up to 5 minutes. Push the Test button during
the 5 minute pause and the control will proceed to the next step
immediately. During the 5 minutes, the Pump and Stage 1 will remain
on. After the 5 minutes, the control will automatically exit the test routine
and enter the normal operating mode. If there is no Heat or Setpoint
Demand, the Pump will not be running, the control will not allow a pause
and will proceed to the next step of the test routine. The control will
repeat this step for each of the stages that are switched to "Auto" at the
DIP switches, and after the last stage is tested will exit the test routine
and enter normal operating mode.
Note:
Whenever the control exits the test routine, there is an a 4 second delay
before the control can be made to re-enter the test routine. Pushing the
Test button during this 4 second period will have no effect on the control.
Power light on — Test light off
The
control has exited the test routine, entered the operating mode and
will function according to the sequence of operation described on pages
4 – 6.
One or more of the other indicator lights may also be on. Refer
to pages 4 - 6 for a description of the indicator lights
under operating
conditions.
13
TEST ROUTINE – AUTO/MANUAL
Testing the Control Functions
TEST ROUTINE
