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21
SECTION IV: OPERATING AND SERVICE INSTRUCTIONS
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 firing of burner outside the combustion chamber. Be sure to tighten swing door
fastener completely when service is completed.
(Note - If make-up water line is equipped with
pressure reducing valve, system will
automatically fill to 12 psi. Leave globe valve
open).
j. Open isolation valve in boiler supply piping.
k. Remove hose from bib cock.
C. CHECK CONTROLS, WIRING AND BURNER to be
sure that all connections are tight and burner is rigid,
that all electrical connections have been completed and
fuses installed, and that oil tank is filled and oil lines
have been tested.
D. LUBRICATION — Follow instruction on burner and
circulator label to lubricate, if oil lubricated. Most
motors currently used on residential type burners
employ permanently lubricated bearings and thus do
not require any field lubrication. Water lubricated
circulators do not need field lubrication.
Do not over-lubricate. This can cause as much trouble
as no lubrication at all.
E. SET CONTROLS with burner service switch turned
“OFF”.
1. SET ROOM THERMOSTAT about 10° above
room temperature.
2. PRESS RED RESET BUTTON on primary control
(R4184D/R8184G) and release.
3. On STEAM BOILERS, set cut-in pressure on
PA404 pressuretrol for three (3) pounds and
differential pressure for two (2) pounds. These
pressures may be varied to suit individual
requirements of installation.
4. On STEAM BOILERS WITH TANKLESS
DOMESTIC WATER HEATERS, set boiler water
temperature dial on L4006 operating control at
190°F (max.). Set differential at 10°.
5. On WATER BOILERS WITHOUT TANKLESS
HEATERS, set high limit dial on L8148 at 210°F.
This temperature may be varied to suit
requirements of installation.
6. On WATER BOILERS WITH TANKLESS
HEATERS, set operating control dial (low limit) on
L8124 at 190°F and high limit dial at 210°F.
Operating control (low limit) must be a minimum
of 20° below high limit setting. Set differential at
25°.
A. ALWAYS INSPECT INSTALLATION BEFORE
STARTING BURNER.
B
. FILL HEATING SYSTEM WITH WATER.
NOTE: It is important, especially in a steam system,
to properly remove the oil and dirt from the system.
Failure to clean the system can result in erratic water
lines and surging.
CLEAN HEATING SYSTEM IF boiler water or
condensate return water is dirty or if erratic water lines
or surging exist after a few days of boiler operation.
Refer to step "N" for proper cleaning instructions for
steam and water boilers.
1. STEAM BOILERS — Fill boiler to normal water
line. Refer to Figure No. 1C.
2. 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 Figure 9, to remove air from
system when filling:
a. Close isolation valve in boiler supply piping.
b. Isolate all circuits by closing zone valves or
balancing valves.
c. Attach a hose to bib cock located just below
isolation valve in boiler supply piping.
(Note - Terminate hose in five gallon bucket at a
suitable floor drain or outdoor area).
d. Starting with one circuit, open zone valve.
e. Open bib cock.
f. Open fill valve (make-up water line should be
located directly above isolation valve in boiler
supply piping).
g. Allow water to overflow from bucket until
discharge from hose is bubble free for 30
seconds.
h. Open zone valve to the second zone to be
purged, then close the first. Repeat this step
until all zones have been purged, but always
have one zone open. At completion, open all
zone valves.
i. Close bib cock, continue filling the system until
the pressure gauge reads 12 psi. Close fill valve.