Utica Boilers SFE IV Steam 安装指导

Impurities in boiler water of a steam boiler may cause 

foaming and an unsteady water line, or prevent steam 

generation. They may result in objectionable odors 

escaping from the vents on water boilers. This condition 

is caused by oil, grease, and sediment from pipe fittings 

collecting within the boiler and can be remedied only by 

giving the boiler a thorough cleaning.
BOILERS SHOULD BE CLEANED BY SKIMMING OR 

BLOWING DOWN. 

Do not leave Boiler unattended during cleaning/

skimming process.

Some of the impurities in the boiler water will float on the 

water and must be skimmed off.
With the boiler empty and cool, slowly begin to add water. 

After water has entered boiler - never before - turn “on” 

oil burner  and adjust water flow so that the water being 

added is kept just below boiling point. Avoid boiling and 

turbulence.
Gradually raise hot water level to skimming hole (Figure #7)  

installed  on  the rear section of the boiler being careful not to 

raise it above the opening of the hole. Skim until there are no 

impurities. Repeat the process if necessary.
Water may be checked to make sure it is free from oil by 

drawing off a sample at the skimming hole. If the sample 

is reasonably free from oil, it will not froth when boiled on 

stove. This test does not indicate the amount of  sediment 

which may lay in the bottom of the boiler. It is therefore 

necessary that the boiler be further cleaned by “blowing 

down.”

Before blowing down the boiler, fill it to the water line. 

Turn on burner and allow five pounds of steam pressure to 

build up. Run a temporary connection from one of the drain 

valves to a nearby sewer. Connect to a drain valve on the 

opposite end of the boiler from feed water inlet, if possible. 

Shut off the oil burner, open drain valve and blow down the 

entire contents of boiler.
Allow boiler to thoroughly cool and slowly refill to water 

line. Repeat as many times as required until blow off water 

is clear. Owner should blow down boiler at least once each 

month of the heating season.

Before seasonal start up it is advisable to have a qualified 

service agency check boiler for soot and scale in flues, 

change oil filter and nozzle, clean burner and re-adjust 

burner input rate to maintain proper operation and high 

operating efficiency.
On steam boilers verify boiler is filled to water line as 

indicated in Figure #14. Gauge valves should be normally 

open. To remove dirt from gauge glass petcock may be 

opened to flush out the glass.

Radiator valves on one-pipe steam system must be either 

wide open or tightly shut. Do not attempt to regulate room 

temperature by partially closing the radiator valve.
Air vents on steam radiators and the supply main release 

air from the system. If radiators do not heat satisfactorily, 

make sure the air vents are clean and operational.
The lever of the pressure relief valve on the boiler (Figure 

#14) should be operated periodically to make sure that it 

is functioning properly.

Safety valve should open before the steam pressure 

exceeds the 15 psi. reading on the gauge. (Figure #14) 

If this pressure is exceeded and the safety valve does not 

open, it must be replaced. If the safety valve leaks steam 

when the boiler is operating at  normal pressures, it should 

be immediately replaced. Corrosion can build up rapidly 

at the valve seat and prevent its functioning as a safety 

device.
If the water in a steam boiler appears to be dirty or oily, or 

the water level in the gauge glass fluctuates considerably, 

the boiler should be cleaned. A competent service person 

will use approved cleaning compounds and properly clean 

and flush out the boiler. He/she should also clean or replace 

air vents and traps, clean flue passages and check for 

proper operation of all controls and safety devices.
The venting system should be inspected at the start of each 

heating season. Check the vent pipe from the boiler to the 

chimney for signs of deterioration by rust or sagging joints. 

Repair if necessary.

Burn and scald hazard.  Verify Boiler is off and 

cooled before performing maintenance. Have a 

qualified service agent perform maintenance. Failure 

to follow these instructions could result in death or 

serious injury.