NTI TRX199C - D. Converting the Appliance from Natural Gas to Propane Operation

80
Part 11 - Start-Up
C. Checking Combustion Parameters
Menu 2. - Boiler Parameters
Submenu 3. - Parameter 1 Maximum Heating Power Adjustment
Submenu 2. - Parameter 0 Ignition Power
Submenu 3. - Parameter 5 Heating Ignition Delay
Maximum Heating Power Adjustment 2.3.1
The maximum heating power can be adjusted to between the
maximum and minimum power allowed by the boiler.
The display shows the heating power value between 100% (“100” on
the display) and 0% (“0”) of this interval.
To check the maximum heating power, access menu 2/sub menu 3/
parameter1 (231) - see page 60.
Check the value. If necessary, modify it as indicated in Table 33.
Checking Ignition Power 2.2.0
To check the Ignition power access menu 2/sub menu 2/parameter 0
(220) - see page 60.
If necessary, modify it as indicated in Table 33.
Heating Ignition Delay Adjustment 2.3.5
This parameter is used to manually (0) or automatically (1) set the
heating ignition delay time. This is the time the boiler delays igniting
the burner after it has met the central heating mode setpoint and
switched o.
To change this parameter, access menu 2/sub menu 3/parameter 5
(2.3.5)- see page 60.
After selecting manual, access the successive parameter 2.3.6 to set
the delay between 0 and 7 minutes.
Automatic selection means that the boiler will establish the delay time
based on the set-point temperature.
Table 33 - Table Summarizing Powers
D. Converting the Appliance from Natural Gas to Propane
Operation
NTI boilers are factory set to operate on Natural Gas. BEFORE
OPERATING ON PROPANE the boiler must be converted to Propane
using the included conversion kit specic to the boiler model.
For Qualified Technician
Installation Instructions
TRX NATURAL TO PROPANE
CONVERSION INSTRUCTIONS
This conversion kit shall be installed by a qualified
service agency in accordance with the manufacturer’s
instructions and all applicable codes and requirements
of the authority having jurisdiction. If the information
in these instructions is not followed exactly, a fire, an
explosion or production of carbon monoxide may result
causing property damage, personal injury or loss of
life. The qualified service agency is responsible for the
proper installation of this kit. THE INSTALLATION IS NOT
PROPER AND COMPLETE UNTIL THE OPERATION OF THE
CONVERTED APPLIANCE IS CHECKED AS SPECIFIED IN
THE MANUFACTURER’S INSTRUCTIONS SUPPLIED WITH
THE KIT, WHICH NECESSITATES THE USE OF A CALIBRATED
CO
2
/O
2
AND CO COMBUSTION ANALYZER.
WARNING
Figure 76 - Conversion Kit
Instruction Cover
ATTENTION:
LIQUEFIED PETROLEUM (LP) PROPANE
Liqueed Petroleum (LP) propane gas is heavier than air; therefore,
it is imperative that your boiler is not installed in a pit or similar
location that will permit heavier than air gas to collect.
Local Codes may require appliances fueled with LP gas be provided
with an alarm or an approved means of removing unburned gases
from the room. Check your local codes for this requirement.
These instructions CANNOT be used to convert NTI appliance
models not referenced within these instructions. Contact NTI for
the availability of conversion kits and instructions for other models.
Failure to apply these instructions properly may result in
dangerous Carbon Monoxide levels, re, or explosion, leading to
property damage, serious personal injury, or death.
WARNING
TRX Models Parameter
150 199 / 199C
Natural Propane Natural Propane
Inlet Gas Pressure Nominal (Inches WC) 7 11 7 11
Inlet Gas Pressure Min/Max (Inches WC) 3.5 - 10.5 8 - 13 3.5 - 10.5 8 - 13
Ignition Power 220 40 65
Maximum CH Power Adjustable (%) 231 100 100
Minimum Power (%) 233 5 6
Max Power (%) 232 & 234 95 97
Gas Diaphragm (Ø) mm
none 5.7 none 5.7
Gas Input (MBH)
Max 150 197 192
Min 15 19.7 19.2