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Part number 550-141-893/0800
6
AHE Series 4 Direct Vent Wall-Mounted Boilers — User’s Information Manual
User maintenance procedures continued
Check boiler piping
Visually inspect for leaks around piping, circulators,
relief valve and other fittings. Immediately call a
qualified service technician to repair any leaks.
Check automatic air vents
1. See Figure 3.
2. Remove the cap from any automatic air vent in the
system and check operation by depressing valve “B”
slightly with the tip of a screwdriver.
3. If the air vent valve appears to be working freely
and not leaking, replace cap “A”, twisting all the way
on.
4. Loosen cap “A” one turn to allow vent to operate.
5. Have vent replaced if it does not operate correctly.
Check boiler relief valve
1. Inspect the boiler relief valve (see Figure 2) and the
relief valve discharge pipe for signs of weeping or
leakage.
2. If the relief valve often weeps:
• The expansion tank may not be working
properly.
• Immediately contact your qualified service
technician to inspect the boiler and system.
❑ Monthly ...............❑ Monthly .....................
Have leaks fixed at once by a qualified service technician.
Continual fresh makeup water will reduce boiler life.
Minerals can build up in sections, reducing heat transfer,
overheating cast iron and causing equipment failure.
Leaking water may also cause severe property damage.
Do not use petroleum-based cleaning or sealing
compounds in boiler system. Severe damage to boiler
and system components can occur, resulting in possible
severe personal injury, death or substantial property
damage.
Check venting system
Failure to inspect the vent system as noted below and
have them repaired by a qualified service technician can
result in vent system failure, causing severe personal
injury or death.
1. Visually inspect the gas vent system for any signs
of blockage, leakage of joints or deterioration of
the piping.
Figure 3
Automatic air vent
71036
A
B
Figure 2
Relief valve