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Trouble Shooting Guide continued-
PROBLEM
Insufficient hot
water
Boiler cycles
more than 5
times per day
in summer
CAUSE
Aquastat setting
too low
Undersized boiler
with no priority to
domestic hot water
Peak use of hot
water is greater
than tank storage
capacity
Faulty tank
aquastat
Excessive demand
Faulty aquastat
Boiler high limit
set too low
33
SOLUTION
Adjust aquastat to higher
setting. See Section VII
Rewire for priority
Determine peak usage
and compare to tank
capacity
Replace aquastat
Reduce demand or
consider larger tank
Replace aquastat
Increase boiler high limit
setting
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