56
LP- 276 REV. 9.4.14
MOD CON FAN SPEEDS
MODEL
IGNITION
MIN
MAX
300
3000
1250
5500
500
3000
1250
6930
850
3000
1500
5400
Table 16 – Fan Speeds
PART 10 – START-UP PROCEDURES FOR THE INSTALLER
A. PROGRAMMING FOR THE INSTALLER
This section describes each parameter the installer can access to customize the settings of the VWH boiler for a particular installation.
These system limits should not be changed by the user. For future reference, it is important to document your settings within this
manual after you program the system parameters.
B. PROGRAM ACCESS
To start, press and hold
{S3}
and
{S4}
simultaneously for three seconds. You will notice the display change to
|000|
. Then, press and
hold
{S1}
until you see
|925|
. (If you go past
|925|
, you can use
{S2}
to decrease the number.) This is the pass code. To confirm that the
pass code is correct, press and hold the
{S3}
key for 1 second. If the pass code is entered incorrectly, the controller program function
will cancel and return to normal operation. If the code is entered correctly, the control will switch off the gas valve and purge fan while
showing a solid
- - -
in the display. The display will then show a
|1|
alternating to
|dd|
. This first function verifies that the control is
configured as a VWH boiler.
C. PROGRAM NAVIGATION
Next you will have to press the
{S3}
key to move through each function. To increase or decrease a value, you will need to press either
{S1}
or
{S2}
to change the default values. If there is no key action for 1 minute, the display returns to normal operation. Changes are
effective immediately but not directly stored until the
{S4}
key is pressed down for 3 seconds then the new values are stored. Listed
below are the varieties of functions the installer can program.
The boiler cannot be programmed while there is a call for heat.
DEFAULT
FUNCTION
VALUE
DESCRIPTION
1
|dd|
N/A (no change allowed)
2
149
o
F
N/A (no change allowed)
3
180
o
F
Allows the installer to set the maximum domestic water heater delivery temperature. Range: 95
o
F
to 185
o
F
4
20
o
F
Offset temperature / number of degrees above the tank set point that will control the boiler output. Ex: Storage tank is
set at 120
o
F with 20
o
F offset boiler supply will be 140
o
F. Range: 1
o
F to 39
o
F.
5
7
o
F
Allows the installer to change the differential temperature (dh) Range: 1
o
F to 18
o
F
6
5 min.
Changes the circulator post purge time once the sensor is satisfied.
(NOTE: Post purge time should be set no greater than 5 minutes.) Range: 0 to 10 minutes
7
68
o
F
N/A (no change required)
8
5
o
F
N/A (no change required)
9
180
o
F
N/A (no change required)
10
68
o
F
N/A (no change required)
11
95
o
F
N/A (no change required)
12
68
o
F
N/A (no change required)
13
0 min.
N/A (no change required)
14
30 min.
N/A (no change required)
15
0
Bus address (Cascade 8 Boiler Max)
(0 = master 1 – 7 = follower)
NOTE: Never address boiler with number 8. Range: 0 to 8.
16
0
Allows the installer to connect a 0-10 volt directly from Building Management System.
To activate, change value to 2.
WARNING: Values 1 and 3 are not to be programmed into the board. Range: 0 - 3.
17
0
N/A (no change required)
18
1
N/A (no change required)
19
180
o
F
N/A (no change required)
Содержание Mod Con 300 VWH
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