Crown Boiler 24-07 - Manual (Page 47)

47
SECTION IV - OPERATING INSTRUCTIONS
A.
ALWAYS INSPECT INSTALLATION BEFORE
STARTING BURNER.
B. FILL HEATING SYSTEM WITH WATER.
Boiler must be cleaned and fully free of oil and dirt.
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 (K) for proper cleaning instructions for
steam and water boilers.
1. STEAM BOILERS - Fill boiler to normal water
line. As shown in Figure 1, the normal water line
is 41½” from the floor or bottom of casting. At
the start of each heating season and once or twice
during the season try SAFETY VALVE to be sure it
is in working condition. To do this, fasten wire or
cord to lever of valve and pull lever — standing safe
distance away from valve.
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 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 registers normal system
design operating pressure. Close fill valve.
(Note - If make-up water line is equipped
with pressure reducing valve, system will
automatically fill to normal system design
operating pressure. Leave globe valve open.)
j. Open isolation valve in boiler supply piping.
k. Remove hose from bib cock.
C.
SET CONTROLS with burner service switch turned
“OFF”.
1. PRESS RESET BUTTON on primary control and
release.
2. On STEAM BOILERS set cut-in pressure on
L404A Pressuretrol for three (3) PSI and differential
pressure for two (2) PSI. These pressures may be
varied to suit individual requirements of installation.
3. On STEAM BOILERS WITH TANKLESS
DOMESTIC WATER HEATERS, set boiler water
temperature dial on low limit operating control at
190°F (max.). Set differential at 10°.
4. ON WATER BOILERS WITHOUT TANKLESS
HEATERS, set high limit dial on L4006A at 210°F.
This temperature may be varied to suit requirements
WARNING
If you do not follow these instructions
exactly, a fire or explosion may result
causing property damage or personal
injury.
If any unusual or improper operation or
site conditions are observed, turn the
boiler off and contact an experienced
and skilled service agency.
Follow component manufacturer’s
instructions. Component manufacturer’s
instructions were provided with the
boiler. Contact component manufacturer
for replacement if instructions are
missing. Do not install, start up, operate,
maintain or service this boiler without
reading and understanding all of the
component instructions. Do not allow
the boiler to operate with altered,
disconnected or jumpered components.
Only use replacement components
identical to those originally supplied with
the boiler and burner.
CAUTION
Failure to clean the system will result in
erratic water lines and surging, and other
improper system operations.
DANGER
Do not operate boiler with pressure
above maximum allowable working
pressure listed on the Boiler Rating
Label.
DO NOT draw water from boiler while in
use. When adding water while boiler is
in operation, do not open supply valve
fully but add water slowly.