Camus Hydronics DynaMax DMH201 Installation And Service Manual page 53

Stack limit exceeded displayed on screen
Alert 125: Modulation was limited due to stack limit
Alert 353: Abnormal recycle: stack limit
A flue gas error occurs when the stack temperature has exceeded the maximum limit allowed by the vent material. This is an
automatic reset error, when the stack temperature drops 20
attempt is made if the call for heat is not yet satisfied. In the event that a setpoint greater than 150
used the setpoint must be reduced to below 150
venting with CPVC, AL29-4C, 316LL or PPE is strongly advised.
The stack temperature is between 15-30
Is vent material PVC plastic?
(white in colour)
NO
Select the correct vent
material setting through
boiler display
Vent Material
PVC
CPVC
PPE
AL29-4C
316L Stainless Steel
o
F below the limit allowed the boiler is allowed to restart and an ignition
o
F to avoid nuisance flame failures. If a setpoint greater than 150
o
F above the incoming (return) water temperature to the appliance.
Adjust CH and/or
YES
DHW Setpoint to
o
150 F or less to avoid
nuisance trips
Maximum Flue Temperature [
149
194
230
300+, limited only by rating of seals
300+, limited only by rating of seals
o
F]
o
F is selected and PVC venting is
o
F is required,
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