Install Instructions

33
Trouble Shooting Guide continued-
PROBLEM CAUSE SOLUTION
Aquastat set too
high
Lower aquastat setting.
See Section VII
Improper system
plumbing
Compare plumbing to
Section V: Water
Connections
Water at faucet
too hot
Improper system
wiring
Compare wiring to
Section VI: Electrical
Connections
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
Insufficient hot
water
Faulty tank
aquastat
Replace aquastat
Excessive demand Reduce demand or
consider larger tank
Faulty aquastat Replace aquastat
Boiler cycles
more than 5
times per day
in summer
Boiler high limit
set too low
Increase boiler high limit
setting