TriangleTube Instinct COMBI 155, Инструкция по установке и обслуживанию

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CHAPTER
1
7
CHAPTER 17 - MAINTENANCE PROCEDURES
17.6. Clean Condensate Drain Assembly
For the INSTINCT Combi unit, the front panel
needs to be removed to gain access to the
condensate drain assembly.
• Loosen the retaining nut from the condensate drain
assembly and disconnect the assembly from the boiler.
• Empty any water from the trap and flush with fresh
water as necessary to clean.
• Remove plastic ball and clean with fresh water.
• Check the drain piping from the condensate drain
assembly to the drain. Refer to Section
6.2 on page
35.
Flush to clean as necessary.
• Install the plastic ball into the condensate drain
assembly and reassemble onto the boiler by
tightening the retaining nut with rubber seal onto
the boiler. Hand tight only.
• Remove the fill plug on the condensate drain
assembly and fill with water. See
Fig. 22 on page 36.
• Replace the fill plug on drain assembly.
17.7. Check Ventilation Air Openings
• Verify that all ventilation openings to the mechanical
room or building are open and unobstructed.
Check the operation and wiring of any automatic
ventilation dampers.
• Check and verify the vent termination and the
combustion air intake are free of debris and obstructions.
17.8. Inspect Vent and Combustion Air Piping
• Visually inspect the venting system and combus-
tion air piping for blockage, deterioration of gas-
kets or leakage. Repair any deficiencies.
• Verify that the combustion air inlet and vent piping
is connected, sealed and properly supported.
Failure to inspect the vent system and combustion
air inlet piping and to have any conditions repaired,
will result in serious injury, or death.
NOTICE
DANGER
17.9. Check Boiler System
• Verify all system components are correctly installed
and operating properly.
• Check the cold fill pressure for the system. Typical
cold water fill pressure is 12 psig.
• Verify the system pressure, as the unit operates at
high temperature, does not exceed 30 psig. Exces-
sive pressure indicates expansion tank sizing is in-
correct or system performance problems.
• Inspect air vent and air separators in the system.
Ensure vents do not leak, replace any leaking vents.
• Verify boiler fluid pH level is between 6.0 and 8.0.
• Check and verify inhibitor /antifreeze concentration
within the boiler water meets inhibitor/antifreeze
manufacturer’s specifications.
• If necessary contact a boiler water treatment com-
pany for a chemical analysis.
17.10. Check Expansion Tank
Refer to
Chapter 4 on page 15
for recommended
location of the expansion tank and air eliminators.
Closed -Type Tank:
• Ensure tank is partially filled with water leaving an
air gap as a cushion. Refer to the manufacturer’s
instruction for proper fill level.
• Ensure the tank is fitted with a device that reduces
gravity circulation of air-saturated tank water back
into the system. This device prevents air from
bubbling up through the water as it returns from
the system.
• Ensure no automatic air vents are used in the
system. This will allow air to escape from the system
instead of returning to the tank.
Diaphragm Tank:
• Ensure the system contains a minimum of one
automatic air vent. Recommended location of the
air vent should be atop an air eliminator.
• Remove the tank from the system and check the
charge pressure. For residential applications, the
charge pressure is typically 12 psig. If tank does not
hold pressure, then the membrane is damaged and
the tank should be replaced.