Shutdown Procedure; Failure To Operate; Important; Part 16 - Shutdown - NTI FTVN085 Installation Start-Up Maintenance

A. Shutdown Procedure
Turn the boiler off at the on/off power switch. Wait for the combustion
blower to stop, so all latent combustion gases are purged from the
system. This could take a maximum of 5 minutes.
B. Failure to Operate
Should the burner fail to light, the control will perform four more
ignition trials prior to entering a lockout state. Note that each
subsequent ignition trial will not occur immediately. After a failed
ignition trial, the blower must run for approximately 5 seconds to
purge the system.
If the burner lights during any one of these five ignition trails, normal
operation will resume.
If the burner does not light after the fifth ignition trial, the control will
enter a lockout state.
This lockout state indicates that a problem exists with the boiler, the
controls, or the gas supply.
Under such circumstances, a qualified service technician should be
contacted immediately to properly service the boiler and correct the
problem. If a technician is not available, press a button on the display
to wake it. Then press the RESET button to remove the lockout state so
additional trials for ignition can be performed.
If the RESET key is not pressed (error code 501 or 503), the boiler will
reset automatically after an hour.
C. Important
WARNING
It is extremely important that whenever work is performed on the
plumbing system that either:
• The appliance is powered off, and,
• The area that is being worked on is valved off and isolated.
Failure to take these measures could result in a dry-firing
condition, explosion or fire, substantial property damage, severe
personal injury, or death.
Part 1 - General Safety Information
Outdoor Sensor
Outside
Resistance
Temperature
(ohms)
o
( F)
-22 178605
-13 132045
-4 98438
5 73995
14 56079
23 42846
32 32997
41 25609
50 20027
59 15777
68 12517
77 10000
86 8042
95 6510
104 5302
113 4343
Table 36 - Sensor Temperature Resistance

Part 16 - Shutdown

Supply/Return Temperature Sensors
Tank Sensor
DHW Outlet Sensor
Water Temp.
Resistance (Ohms)
o
( F)
32 27219
41 22021
50 17926
59 14674
68 12081
77 10000
86 8315
95 6948
104 5834
113 4917
122 4161
131 3535
140 3014
149 2586
158 2228
167 1925
176 1669
185 1452
194 1268
202 1110
212 974
97