Burnham Series 4N Boiler Instruccion De Instalación
14
D. Turn boiler on and verify that fuel valves are
closed during the burner pre-purge cycle. Turn
boiler off and disconnect power.
E. Adjust burner according to the burner
manufacturer's specifications. Target CO
2
level is
13% for optimum efficiency, but a range of 12.5 -
13.0% is acceptable.
4. TEST CONTROLS
Before installation of the boiler is considered
complete the operation of the boiler controls
should be checked, particularly the low water
cutoff and the high limit control.
A. Check Operating Control Raise and lower
operating control setting as required to start and
stop burner.
B. Warning Check High Limit Control
Jumper Operating Control Terminals. Allow
Burner to operate until shut down by limit.
Installation is not considered complete until this
check has been made. REMOVE JUMPER.
C. Check Low Water Cut-Off control with water
level at normal waterline. Raise operating control
setting to allow burner to operate. Open boiler
drain to allow water level to drop until burner
operation is shut down by low water cutoff.
DO NOT ALLOW THE BOILER TO OPERATE BELOW
THE MINIMUM PERMISSIBLE WATER LEvEL AS
INDICATED ON THE BOILER.
Close boiler drain and refill to normal water line.
Unless boiler is equipped with a manual reset low water
cutoff, burner should automatically restart during fill.
Reset operating control.
PROBE AND FLOAT TYPE LOW WATER CUT-OFF
DEvICES REQUIRE ANNUAL INSPECTION AND
MAINTENANCE. Refer to Service Instructions,
Section Iv for proper cleaning instructions.
D. Check Operating Control on boiler equipped
with a tankless heater. With burner off, draw hot
water until burner starts, then turn off hot water
and check burner shut down.
1. Always inspect installation before starting
burner.
2. Fill heating system with water.
2. Fill heating system with water.
Any time that raw water is introduced to the boiler
it must be heated to at least 180ºF immediately to
dissipate the dissolved gases which can otherwise
cause internal corrosion to the boiler.
A. Steam Boilers Fill boiler to normal water line.
Water should be visible in the gauge glass.
After boiler is in operation, make up water should
be added slowly to maintain the water level.
B. Hot Water Boilers In a hot water heating system,
the boiler and the entire system (other than
the tank) must be full of water for satisfactory
operation. Water should be added to the system
until the boiler pressure
gauge registers normal system design operating
pressure. To ensure that the system is full, water
should come out of all air vents when opened.
ON A HOT WATER SYSTEM THE PRESSURE MUST
NOT EXCEED 30 POUNDS UNLESS THE BOILER IS
ESPECIALLY DESIGNED FOR A HIGHER MAXIMUM
WORKING PRESSURE. IF A BOILER PRESSURE
EXCEEDS PRESSURE SETTING OF SAFETY RELIEF
vALvE, vALvE WILL RELIEvE IMMEDIATELY, BUT
CAUSE OF RELIEF MUST BE INvESTIGATED AND
CORRECTED. EXCESS PRESSURE IS DANGEROUS,
IN ADDITION, COULD CAUSE DAMAGE TO HEATING
SYSTEM, PERSONAL INJURY OR SERIOUS
PROPERTY DAMAGE.
DO NOT draw water from the boiler while in use.
When adding water while boiler is in operation,
do not open the supply valve fully, but add water
slowly.
3. BURNER
A. Check wiring of all fuel valves. Verify that wiring
is correct according to the factory supplied wiring
diagram.
B. Leave all manual fuel valves closed. This includes
manual shutoff valves supplied with the boiler and
facility installed valves at the boiler site.
C. Perform all burner pre-startup checks according
to the burner manufacturer's specifications. Refer
to the burner manufacturer's installation manual
furnished with the boiler.
SECTION III — OPERATING INSTRUCTIONS