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Trouble Shooting Guide continued-
PROBLEM
Insufficient hot
water
Boiler cycles
more than 5
times per day in
summer
CAUSE
Thermostat 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
thermostat
Excessive demand
Faulty thermostat
Boiler high limit set
too low
33
SOLUTION
Adjust thermostat to higher
setting. See Section VII
Rewire for priority
Determine peak usage and
compare to tank capacity
Replace thermostat
Reduce demand or consider
larger tank
Replace thermostat
Increase boiler high limit
setting
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