Installation / Operation Instruction Manual

30
Troubleshooting Guide continued-
PROBLEM
CAUSE
SOLUTION
Water at
faucet too hot
Aquastat set too
high
Lower aquastat
setting. See Section
VII.
Improper system
plumbing
Compare plumbing to
Section V: Water
Connections.
Improper system
wiring
Compare wiring to
Section VI: Electrical
Connections.
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.