Iv. Safety Check For Control System; Protection From Freezing; Water Treatment - Slant/Fin Galaxy GG-300 Installation And Operating Instructions Manual

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I. GENERAL MAINTENANCE
These operations are recommended to be performed at regular
intervals:
A.BOILER HEATING SURFACES: clean off all coatings found.
B. BOILER CONTROLS: check contacts, settings, correct func-
tioning.
C.PIPING: check piping and accessories for leaks.
D. CHIMNEY and BREECHING: check for obstructions and
leaks.
E.BOILER ROOM AIR SUPPLY: check air vents for continued
POSITIVE supply of air as required. Air needs are greatest in
cold weather. Air vents must be open and free of obstruction.
F. WATER SYSTEM: check
1. System to be full of water, and pressure to remain stable at
correct setting on gauge.
2. Air-control system: noise and air binding in radiation should
not occur.
3. Water lines: slightest leaks should be corrected.
4. Low water cut-off, for operation (see instructions furnished
with unit.)
II. WATER LEVEL CHECK DURING HEATING SEASON:
Regular loss of water from water boiler system may indicate
either a system leak, or a faulty air-control system, or a faulty
automatic fill valve.
III. ANNUAL INSPECTION AND CLEANING:
A.It is important that this boiler be inspected by a competent
serviceperson to help insure safe and reliable operation.
B. Check for gas leaks from valve and gas piping to burners and
pilot. If leaks are found, repair or replace as required.
C.This inspection should include:
1. Controls check. See SAFETY CHECK, IV.
2. Recheck of input gas rate to burners. See "Initial Start"
paragraph in "Operating Instructions" section.
3. Re-adjusting for best flame characteristics of main flame
and pilot.
See "Initial Start" paragraph in "Operating Instructions" sec-
tion and see "Burner Adjustment" section.
4. Burner and boiler flue passage cleanliness: BURNER AND
FLUE CLEANING (see sketch). It is suggested that paper
be placed on burners to collect any foreign material in
cleaning flues.
5. Remove draft hood, jacket top and flue cover.
6. Use wire brush to clean flueways.
7. Replace flue cover and re-seal with furnace cement.
Replace jacket top and draft hood and reconnect to smoke
pipe, using screws. Remove and dispose of paper and
accumulated material.
8. If burner surfaces are not clean, or if uneven flame indi-
cates plugged burner ports, remove and clean burners.
NOTE—TO REMOVE BURNERS:
a. Remove holding wire clip at orifice.
b. Disconnect pilot at pilot mount, or disconnect pilot gas line at
gas valve, before removing burners next to pilot.
c. Lift rear of burner and remove burner from orifice.
d. Clean and replace burners* and pilot. Adjust burners as
described on "Burner Adjustment".
* To clean burners run a clean flue brush up the tube until all
foreign matter is removed.
Boiler Cleaning

IV. SAFETY CHECK FOR CONTROL SYSTEM

A.High limit control test: Set thermostat high enough for boiler
water temperature to reach high limit control setting. When
this temperature is reached, the high limit switch should open,
and the main gas valve should close automatically. If the high
limit does not close the main gas valve, the valve, the high
limit or the wiring is faulty. Repair or replace immediately.
B. Gas valve safety shutdown test:
With main burners firing, disconnect the ignition cable from
the Ignition Control. The gas valve should shut off the main
burners. If the gas valve fails to shut down main burners when
the test is performed, replace the gas valve.
C.Check for gas leaks from valve and gas piping to burners and
pilot. If leaks are found, repair or replace as required.
V. A.Providing Protection from Freezing.
Anti-freeze is sometimes used in hydronic heating systems to
protect against freeze-up in the event of power failure or con-
trol shutdown when the building is unoccupied. It should be
recognized that unless the building is kept above freezing
temperature by some means, the plumbing system is not pro-
tected.
Two types of anti-freeze may be used: ETHYLENE GLYCOL,
used in automobiles, has desirable properties, but is toxic. Its
use may be prohibited when system water/glycol solution is in
contact with a potable water vessel (as with a tankless
heater). PROPYLENE GLYCOL is used in the quick-freeze
food industry; it is practically non-toxic. Its use may be permit-
ted when tankless heaters are used. When anti-freeze must
be used, inhibited propylene glycol is recommended. Useful
information on the characteristics, mixing proportions, etc. of
glycol in heating systems is given in Technical Topics No. 2A,
available from the Hydronics Institute 34 Russo Place,
Berkeley Heights, NJ 07922. Consult glycol manufacturers for
sources of propylene glycol.
B. Water Treatment:
A good water treatment program will not only extend the use-
ful life of this boiler but it will also save much of the time and
expense of repairs made necessary by preventable occur-
rences.
A reputable water treatment company should be consulted to
evaluate and determine the best overall treatment program for
your boiler equipment.
VI. KEEP THE BOILER AREA CLEAR AND FREE FROM COM-
BUSTIBLE MATERIALS, GASOLINE, AND OTHER FLAMMABLE
VAPORS AND LIQUIDS.
GALAXY