Raypak 0042B - Manual (Page 5)

5
Venting System Inspection
Visually inspect the venting system. Make sure the
vent connections are secure and have not become
disengaged. Look for any indication of corrosion, or
carbon (soot) streaks which could cause leakage of
products of combustion into the living space. Inspect
the vent terminal outside the building. Make sure it is
not damaged to cause blockage or restriction of the
flue gas. Look for any indication of soot. The presence
of soot accumulation in the vent terminal would indi-
cate an abnormal operating condition. This should be
investigated and corrected by a qualified service
agency.
Circulator (Water Pump) Inspection
The circulator is permanently lubricated and thus, will
not require any lubrication. Inspect for evidence of
water leakage. This should be corrected to prevent
any possible damage to electrical components of the
boiler.
To prevent the potential freezing damage to the heat-
ing system, it is recommended that the following
system shut down procedure be performed.
System Shut Down Procedure
1. Set the room thermostat to "OFF" or the lowest
setting.
2. Turn off all electric switches to the boiler.
3. Turn off all gas valves supplying gas to the boiler.
Refer to operating instruction label on the boiler.
4. Shut off the water supply to the boiler piping sys-
tem loop.
5. Open drain valve on the boiler to remove water
from the boiler and the piping circuits.
Service Assistance
If service is required on the boiler, contact your local
service agency or Raypak can refer you to the proper
qualified service agency. It is important and very often
will save time if you state the model number, serial
number and type of gas used. This information will be
found on the nameplate of the boiler.
CORROSION
SOOT
DISENGAGED
Fig. 7: Inspect the Venting System
CAUTION: In case of a prolonged power failure
during freezing weather conditions, boiler and piping
system must be drained completely to avoid possible
damage to the heating system.
NOTE: It may be necessary to open the purge
valves and/or manual air vents to facilitate complete
drainage of water from the heating system.