4-1
MAINTENANCE
DC SERIES BOILERS / WATER HEATERS
DC 15-95, DC 15-96, DC 20-125, DC 33-160
MAINTENANCE
4.0
BOILER / WATER HEATER
MAINTENANCE
4.1.1 General Care
•
Keep combustible materials and flammable liquids and vapours away from the boiler
/ water heater.
•
Keep vent terminals clear of obstructions (snow, dirt, etc.).
4.1.2 Inspection
Inspection of the boiler / water heater is to be performed annually by a
qualified service technician.
4.1.3 Venting
•
Check vent terminals for and remove any obstructions (e.g. leaves, dust, other
debris).
•
Check, and clean or replace intake air filters or screens as required.
•
Check for holes or leaks in venting. Replace venting as needed.
•
Examine for any signs of moisture caused by sweating intake air pipes;
insulate as required.
•
Ensure proper resealing or reinstallation of venting on each servicing.
4.1.4 Condensate Traps
•
Condensate trap must be examined every two months to see if cleaning is
necessary
(refer to trap cleaning instructions, section 1.5.3 of this manual).
Ensure that trap has been re-filled completely before firing boiler / water
heater.
•
If condensate neutralization is used, check pH level of condensate discharge.
4.1.5 Burner
•
Annually, remove burner to inspect for extent of fouling
(refer to burner
removal and reassembly instructions, section 3.5.1 of this manual).
Blow clear
using compressed air. Ensure flame is stable and without excessive fluttering.
Normal flame pattern is evenly distributed over the burner surface.
•
If burner is operating improperly, remove and clean or replace. Use a CO
2
analyzer to determine proper combustion.
See Table 11, page 3-3 for correct
values.
4.1
CAUTION
Label all wires prior to
disconnection when servicing
controls. Wiring errors
can cause improper and
dangerous operation.
CAUTION
The owner is responsible
for general care of the boiler
/ water heater. Improper
maintenance of the boiler /
water heater may result in a
hazardous condition.
WARNING
Whenever the burner is
removed for inspection or
boiler / water heater servicing,
the sealing gaskets must be
examined and replaced if
damaged.Upon re-assembly,
an approved leak test solution
must be applied around the
burner flange sealing area to
ensure there is no leakage of
combustible gas/air premix.
WARNING
Fill trap with water before
boiler / water heater is first
fired to prevent exhaust
fumes from entering room.
Never operate the boiler /
water heater unless the trap
is filled with water. Failure to
comply will result in severe
personal injury or death.
Figure 38: Ignitor Gap - 3/16” / 4.5mm
CAUTION
Periodic inspection of
Low Water Cut-Off Device
including flushing of float
types is required, if installed
as an accessory to the boiler /
water heater.
