Installation Guide

Rinnai I-Series Condensing Boiler Combi Manual 87
Parameter
Number
Seng Descripon
Selecon
A b C d
40
Linked Operaon Between CH Pump 1 and 2
No
Yes (Linked
Together)
This parameter enables linked operaon
between the CH Pump 1 and 2. For example,
when T/T 1 is acve, both pump 1 and 2 are ON.
The room thermostat wire must be connected
to the T/T1 connecon.
When selecng DHW mode on DIP switch 3, the
parameter is not available and must in the OFF
posion (default).
This seng is primarily for an applicaon that
requires two pumps for one zone, such as in use
with a a header style applicaon.
41
Linked Operaon Between Main Boiler Pump
and CH Pump 1
No
Yes (Linked
Together)
(If selected,
hydraulic
separaon is
needed.)
This parameter is only in use when DIP switch 2
is in the ON posion.
This enables the linked operaon between the
main boiler pump and CH pump 1. For example,
when the main pump is on, pump 1 is also on.
When DIP switch 2 is in the OFF posion, the
pumps are automacally linked.
42
Main Pump Runs When the Target Temperature
is Achieved
Connuously Intervals
This selects the mode of the main pump running
when the target setpoint is achieved. This
seng is for whether running on intervals to
reduce pump operaon or connuously running
to reduce wait me to re-re. Intervals are 10
minutes ON and 30 minutes OFF.
Note: If an air handler is in use, use the default
seng “Connuously.”
43
External Pump Runs When the Setpoint
Temperature is Achieved
Same as Main
Pump
Does Not
Run
This selects the mode of the external pump(s)
running when the target setpoint is achieved.
This seng is for whether stopping the external
pump from running to reduce pump operaon
me or it operates the same as the main pump
to enable remaining heat from the heat
exchanger to be delivered to the system.