General Instruction For Seasonal Startup & Maintenance - Columbia CDVB-50 Installation, Operation & Maintenance Manual

Cdvb series
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It is suggested that a qualified service agency be employed
to make an annual inspection of the boiler and the heating
system. They are experienced in making the inspection
outlined below.
In the event repairs or corrections are necessary they can
make the proper changes for safe operation of the boiler.
!
Label all wires prior to disconnection when
servicing controls. Wiring errors can cause
improper and dangerous operation.
Verify proper operation after service.
If the venter has oil cups, lubricate venter motor once a
month during the heating season with a few drops of non-
detergent motor oil (SAE 20 or 30). Replace the rubber
plugs when finished.
!
Do not over oil.
BEGINNING OF EACH HEATING SEASON
1.
Before seasonal start-up, it is highly advisable to have
a certified service agency inspect the system:
A. Check the boiler for soot and scale build up in the
flues.
B. Clean the burners.
C. Check the gas input rate to maintain high operating
efficiency.
2.
The service agency should make certain the system is
filled with water to minimum pressure (approximately
12 pounds per square inch) and open air vents (if used)
to expel any air that may have accumulated in the
system.
3.
Check automatic air vents for leakage.
4.
Inspect venting system at the start of each heating
season. Check the pipe from the boiler for signs of
deterioration and sagging joints. Repair if necessary.
Remove the vent pipe from the boiler and check for
obstructions.
5.
Clean condensate tee & trap. Periodic cleaning of the
condensate collection system is required. When a
condensate collection system is installed in a venting
system, it is recommended that the cleaning become a
part of the annual servicing.
GENERAL INSTRUCTION FOR SEASONAL STARTUP & MAINTENANCE
CAUTION
CAUTION
Procedure for cleaning condensate system:
A. Remove tubing from condensate tee.
B. Empty all liquid from tubing.
C. Rinse tubing inside & out in a sink with water.
D. If tubing cannot be cleaned inside, the tubing
should be replaced with the same type and size of
tubing.
E. Replace tubing as described in figure 28. (Fill trap
with water.)
F. Visually inspect entire piping system and if any
leaks appear, have them repaired as soon as
possible. DO NOT use petroleum based stop leak
compounds.
6.
Check venter assembly static pressure as follows:
A. With the boiler off, disconnect the white
compression fitting on the pressure switch.
B. Connect a slope manometer to the compression
fitting with additional tubing.
C. Turn the boiler on and read suction pressure on
the manometer. Reading should be negative (-)
.55 ± .05 inches of water column or higher for the
50B thru 150B and negative (-) .65 ± .05 inches of
water column or higher for the 200B.
7.
If static pressures are not at the minimum allowable
level (listed above), check vent pipe for obstructions.
Figure 28 - Condensate Tubing
VENT PIPE
CONDENSATE DRAIN
34
VENT SYSTEM FOR
LENGTHS 15' AND UNDER
VENT SYSTEM FOR
LENGTHS OVER 15'
CONDENSATE TRAP
ASSY. NOTE, NOT REQUIRED ON
MODELS DV125 THRU 200.
ELBOW

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Cdvb-150Cdvb-125Cdvb-100Cdvb-200

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