Installation / Operation Instruction Manual

32
Troubleshooting Guide continued-
PROBLEM
CAUSE
SOLUTION
Water at
faucet too hot
Improper system
plumbing
Compare plumbing to
Section V
Improper system
wiring
Compare wiring to
Section VI
Aquastat set too
high
Lower aquastat setting.
See Section VII
Insufficient
hot water
Aquastat setting
too low
Adjust aquastat to
higher setting. See
Section VII
Undersized boiler
with no priority to
domestic hot
water
Rewire for priority
Peak use of hot
water is greater
than tank
storage capacity
Determine peak usage
and compare to tank
capacity
Faulty tank
aquastat
Replace aquastat
Boiler cycles
more than 5
times per day
in summer
Excessive
demand
Reduce demand or
consider larger tank
Faulty aquastat
Replace aquastat
Boiler high limit
set too low
Increase boiler high
limit setting