D. test mode, Part 10, Start-up procedures for the installer – HTP 850 LPHL User Manual
Page 53: A. programming for the installer, B. program access, C. program navigation, Part 10 – start-up procedures for the installer
53
LP- 205 REV. 3.28.14
D. TEST MODE
This function is intended to simplify the gas valve adjustment. Listed below are the recommended limits on each boiler and combustion
settings. Automatic modulation does not take place when the controller is in test mode, only temperature limitation based on the boiler
central heating set point. The user can increase or decrease the fan speed by pressing either
{S1/-}
or
{S2/+}
.
To activate test mode, press the
{S2/+}
and
{S3/Program}
keys together for 1 second. Once activated, you will see in the display
{Ser}
and the actual fan speed. The measurement of the combustion levels should always be taken at the highest and lowest fan speeds.
After 20 minutes, test mode stops automatically. To exit test mode, press
{S1/-}
and
{S2/+}
together for 1 second.
COMBUSTION SETTINGS ON ALL MODELS
Natural Gas
Propane LP
Fan Speed
low
high
low
High
Carbon Monoxide (CO%)
0
– 20 ppm
70
– 135 ppm
0
– 20 ppm
80
– 150 ppm
Carbon Dioxide (CO
2
%)
8 ½ - 9 ½%
8 ½ - 9 ½%
9 ½ - 10 ½%
9 ½ - 10 ½%
Table 11
– Combustion Settings on All Models
MOD CON FAN SPEEDS
MODEL
IGNITION
MIN
MAX
300
3000
1250
5500
500
3000
1250
6930
850
3000
1500
5400
Table 12
– 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 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
|de|
. This first function verifies that the control is
configured as a 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.
NOTE: See Figure 28 to set outdoor reset curve.
DEFAULT
FUNCTION
VALUE
DESCRIPTION
1
|de|
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
36
o
F
N/A (no change allowed)
5
7
o
F
Allows the installer to change the differential temperature (dh) in the indirect fired water heater (does not apply if used
with mechanical control)
Range: 1
o
F to 18
o
F