Specifications

LWLCWH COLUMBIA BOILER COMPANY REV. 13106
16
CLEANING AND FILLING A NEW STEAM BOILER
Note: The following procedure is for steam boilers only. This procedure should also be used
for indirect water boilers (CWH-Series).
In order to minimize the corrosive effects of raw water oxidation on the boiler, the water must be
heated to at least 180°F immediately after entering the boiler, in order to drive off the corrosive
dissolved gases. This applies to all water - whether from a well, a spring, or from the local municipal
water system.
The oil and grease that accumulate in a new steam boiler can usually be washed out by boiling as
follows:
1. Fill the boiler to the normal waterline.
2. Remove the safety valve.
3. Provide a boil-out compound of caustic soda and trisodium phosphate in the
proportions of 2-1/2 lbs. of each chemical per 120 gallons of water.
CAUTION: USE CARE IN HANDLING THESE CHEMICALS. THE CAUSTIC SODA IS
EXTREMELY CORROSIVE TO SKIN AND CLOTHING. DO NOT PERMIT EITHER
THE DRY MATERIAL OR THE CONCENTRATED SOLUTION TO CONTACT SKIN
OR CLOTHING.
EQUAL AMOUNTS
BOILER MODEL CAUSTIC SODA AND
TRISODIUM PHOSPHATE
L-18 / CWH-1708 8 oz
L-20 / CWH-240 10 1/3 oz
L-22 / CWH-300 14 1/3 oz
L-24 / CWH-390 1 lb 2 1/3 oz
L-30 / CWH-475 1 lb 10 2/3 oz
L-32 / CWH-610 1 lb 14 oz
WL-60 / CWH-780 2 lb 12 1/3 oz
WL-90 / CWH-1200 3 lb 3 1/3 oz
WL-120 / CWH-1510 4 lb 1/3 oz
WL-140 / CWH-1810 4 lb 7 1/3 oz
WL-180 / CWH-2460 6 lb