Installation Guide

88 Rinnai I-Series Condensing Boiler Combi Manual
46
The Dierenal Temperature from Ceasing Fire
to Firing Again
Normal Quick
How much temperature drop is permied by
the supply water thermistor before the boiler
will re again.
When selecng "Quick", the boiler will re more
frequently and achieve more temperature
control.
CH Seng Temperature
Temperature Drop
168-182°F (75-82°C)
27°F (15°C) 15°F (8°C)
104-166°F (40-74°C)
15°F (8°C) 9°F (5°C)
47
The Time Which the Boiler is not Allowed to Fire
Again for CH
Normal
(3 Minutes)
Quick
(10 Seconds)
This selects the me which the boiler will not be
able to re again for CH aer the burner has
shutdown. This seng is to prevent frequent
ON/OFF operaon.
49
Will the boiler shut down on a high return water
temperature
Yes No
This seng is for whether the boiler will shut
down at high return water temperatures. This is
to decrease the o cycle me even though the
return water temperature is warm.
60
Not Available
Not Available
A0
Gas Type
Natural
Gas
Liquid
Propane
For selecng gas type when conducng gas
conversion.
A1
Not Available
Not Available
A2
Vent Material Used
PVC
Material
other than
PVC:
CPVC/PP/
Other
This selects the venng material used. The
boiler is set from the factory to be installed in a
PVC venng system. If CPVC, PP, or other
approved venng is used, this may be adjusted.
See secon “5.4 PVC Venng Safety Switch” for
more informaon.
45
Freeze Protecon Level
Default
When Boiler
is Installed in
a Warm
Room
This selects the freeze protecon level.
Selecng “B” will prevent the boiler from
operang in freeze protecon mode more than
believed necessary.
Parameter
Number
Seng Descripon
Selecon
A b C d
44
External Pump Runs When Freeze Protecon is
in Operaon
Does Not
Run
Same as Main
Pump
This selects how the external pump operates
when freeze protecon is in operaon. This se-
lects whether the pump will run to reduce the
pumps operaon me or operang the same as
the main pump to enable the boiler to deliver
the remaining heat to the system. The tempera-
ture water being delivered to the system may
not be as warm as desired with this seng ON.
Note: If “Same as Main Pump” is selected, hy-
draulic separaon is needed.