HydroTherm KN-2 - Starting the Boiler

P/N 42-9450 8/08 Copyright 2008 Hydrotherm
Page 32 KN INSTALLATION AND OPERATION INSTRUCTIONS
Starting the boiler
Failure to adhere to the following could result in severe personal
injury, death or substantial property damage.
Accessibility
 e boiler must be accessible from both the right and le sides in order to do a
correct start-up/adjustment. Make sure the  ame window on the le side and
the gas valve thro le adjustment opening in the jacket top are accessible. See
Figure 29, page 38.
Follow the start-up checklist
Perform the start-up check list procedures before starting the boiler.
Turn o power and fuel supply
Turn o electrical power to boiler if not already o . Close the main manual gas
valve at the boiler.
Verify the gas type
Check the boiler rating plate to make sure that the boiler is for the type of gas
that will be used. If it is not, do not the boiler will have to be adjusted for the
correct gas, for both high  re and low  re.
Install boiler per manuals
Read and follow all boiler instructions, including this Boiler manual, the
KN Vent/air manual and the KN Control manual.
All water piping, gas piping, vent piping and air piping must be complete
before starting the boiler.
Check gas piping for leaks
Check all gas piping for leaks, including the boiler interior gas piping and
connections, per page 18 of this manual.
Never leak test with  ame
Never use an open  ame to test for gas leaks. Always use an approved leak de-
tection method.
Propane gas applications
 e odorant in propane gas can fade over time, reducing or eliminating the
gas odor.  is makes the gas undetectable by smell. Before start-up, and
periodically a erwards, have the propane supplier check/verify the odorant
level.
Never attempt to measure gas valve outlet
pressure
Do not a empt to measure the boiler gas valve outlet pressure.  e high
negative pressure in the venturi can suck  uid out of a manometer, pulling it
into the gas valve.  is would destroy the gas valve, rendering it unusable.
Start-up checklist
Read all boiler manuals
 e KN is supplied with three manuals:
Boiler manual
Vent/air manual
Control manual.
Read and familiarize yourself with all three manuals before
proceeding with start-up.
Check the boiler area
Make sure there are no combustible materials or chemicals
that could cause air contamination in the boiler room.
Verify vent piping
Inspect vent piping to be sure all joints are secure and
properly sealed.
Verify vent piping supports are correctly placed and secure.
Check vent termination to be sure it is correct and not
obstructed.
Measure total vent pipe length and note the number of
  ings. Make sure the vent complies with the KN Vent/air
manual.
Verify combustion air and ventilation
If combustion air is supplied from the boiler room, make
sure air openings agree with the requirements given in this
manual.
If combustion air is piped to the boiler:
Inspect air piping to be sure all joints are secure and
properly sealed.
Verify air piping supports are correctly placed and
secure.
Check air inlet termination to be sure it is correct and
not obstructed.
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Should overheating occur or
gas supply fail to shut o :
Do not interrupt water  ow to the boiler.
Instead, shut o gas supply to the boiler
with the manual valve in the gas supply
line.
En cas de surchau e ou si
soupape en gaz ne s’arrête
pas :
N’interrompez pas l’écoulement d’eau
par la chaudière. Fermez manuellement
le robinet d’arrêt de l’admission de gaz.
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