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Vitorond 200, VD2A Series Installation
System Preparation
Gas piping pressure test
A sediment trap/dirt pocket must be provided upstream
of all gas controls. Provisions for connecting vent lines
or vent limiters are on gas regulator.
The boiler and its individual shut-off valve must be
disconnected from the gas supply piping system during
any pressure testing of that system at test pressures
in excess of 14" w.c. (3.5 kPa).
The boiler must be isolated from the gas supply piping
system by closing its individual manual shut-off valve
during any pressure testing of the gas supply piping
system at test pressures equal to or less than 14" w.c.
(3.5 kPa).
IMPORTANT
½ psig = 14 "w.c.
Unions and the gas manifold have not been factory-
tested. A leak test must be completed during initial trial
operation of burner by a licensed gas fitter.
Prior to Start-up
j Ensure that all turbulators are completely inserted into
the flue gas passageways (open combustion chamber
door).
j Ensure that combustion air openings and ventilation
air openings in mechanical room are open.
j Ensure the heating system has been filled with water
and is completely purged of air.
WARNING
Ensure the water quality was tested and is in
compliance with the guidelines for system-fill water.
Failure to do so may result in improper operation
and/or damage to the heating system.
j Check cold fill pressure of heating system.
j Check oil supply or proper natural or propane gas
supply pressure.
j Ensure proper barometric draft regulator is installed
(field supplied).
j Ensure cleanout openings near flue gas collar are
closed tightly.
(continued)
1. Connect and size gas supply piping in accordance
with local and national codes.
2. Perform leak test. Never check for gas leaks with
an open flame. Use approved liquid spray solution
for bubble test. Ensure that no liquid is sprayed on
any electrical components, wires or connectors.
Do not allow leak detection fluid to contact gas valve
regulator or regulator vent opening.
3. Remove air from gas line with an approved gas purge
burner or vent to outdoors.
j Open valve(s) in oil or gas fuel supply lines.
j Activate all switches for heating system - system
switch, heating system pump, burner power supply,
etc. (observe instructions given by burner
manufacturer).
j If cold-starting burner (or if restarting burner after
lengthy service procedures), close off heating system
supply to ensure the boiler passes through the
dew-point rapidly.
j Once the supply water temperature has risen above
the minimum, gradually open up the boiler supply and
return valves to the heating system, and switch the
burner to automatic.
j Check all gaskets and connections and retighten
if necessary.
j Check and retighten bolts of combustion chamber door
and clean-out opening covers several days after start-up.
Follow instructions of boiler control, oil and/ or gas power
burner during boiler start-up.
Start-up
35
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