MPO-IQ Installation, Operating, and Service Instructions

47
IX. SYSTEM START-UP
WARNING
All boilers equipped with burner swing door have a potential hazard which can cause severe property damage,
personal injury or loss of life if ignored. Before opening swing door, turn off service switch to boiler to
prevent accidental ring of burner outside the combustion chamber. Be sure to tighten swing door fastener
completely when service is completed. In addition, the burner power cord will have to be disconnected from
the receptacle in the front jacket.
A. ALWAYS INSPECT INSTALLATION BEFORE
STARTING BURNER.
1. Verify that the venting system is properly installed and
free of obstructions prior to start-up of the boiler. Refer to
Section V "Natural Draft Venting" or Section VI "Direct
Venting / Air Intake Piping" in this manual.
2. Inspect electrical system to ensure proper electrical
connections are made and fuses are installed. Refer to
Section VII "Electrical" in this manual.
3. Verify that the oil piping is properly installed, the oil tank
is lled with #2 fuel oil and oil lines have been tested.
Refer to Section VIII "Oil Piping" in this manual.
4. Conrm all electrical and oil supplies are turned off at
the source.
WARNING
Completely read, understand and follow all
instructions in this manual before attempting start
up.
B
. FILL HEATING SYSTEM WITH WATER.
NOTICE
It is important to properly remove the oil and dirt
from the system. Failure to clean the system can
result in clogged air vents, circulator damage and
seized zone valves. Refer to Maintenance and
Service Instructions Section of this manual for
proper cleaning instructions.
CLEAN HEATING SYSTEM if boiler water is dirty.
1. HOT WATER BOILERS. Fill entire heating system
with water and vent air from system. Use the following
procedure on a series loop or multi-zoned system installed
as per Figures 13A and 13B, to remove air from system
when lling:
a. Close full port ball valve in boiler system piping.
b. Isolate all zones by closing zone valves or shut-off
valves in supply and return of each zone(s).
c. Attach a hose to vertical purge valve in boiler system
supply piping up stream from the full port ball valve.
(Note - Terminate hose in ve gallon bucket at a
suitable oor drain or outdoor area).
d. Starting with one zone at a time, open zone valve or
shut-off valve in boiler supply and return piping.
e. Open purge valve.
f. Open shut-off valve in cold water supply piping located
between the air scoop and expansion tank.
g. Allow water to overow from bucket until discharge
from hose is bubble free for 30 seconds.
h. When zone valve is completely purged of air, close
zone valve or shut-off valve. Open zone valve to
the next zone to be purged. Repeat this step until all
zones have been purged. At completion, open all zone
valves.
i. Close purge valve, continue lling the system until
the pressure gauge reads 12 psi. Close shut-off valve
in cold water supply piping.
WARNING
The maximum operating pressure of this boiler is
posted on the ASME Data Label located on the top
of the boiler. Never exceed this pressure. Do not
plug relief valve.
NOTICE
If make-up water line is equipped with pressure
reducing valve, system will automatically ll to 12
psi. Follow ll valve manufacturer's instructions.
j. Open full port ball valve in boiler system piping.
k. Remove hose from purge valve.
l. Conrm that the boiler and system have no water
leaks.
m. It may be necessary to clean the air vent assembly
after a few days of operation.
C. CHECK OIL BURNER BEFORE STARTING.
1. Ensure that burner is tightly secured to the burner
swing door creating an airtight seal.
2. CHECK BURNER AIR AND HEAD SETTINGS,
readjust if necessary, see Table 16A thru 16C and 17
at rear of manual. Refer to Burner Manufacturer's
Manual.
3. Adjust system thermostat(s) to highest setting.