Installation Manual

Rinnai I-Series Condensing Boiler Solo Manual 87
Thermostat Usage (Default Seng)
This is the default seng for the boiler. This seng enables the boiler to operate in CH from a call
for heat from the room thermostat or zone controller. In this seng, the Central Heang buon is
not funconal except as an Error Reset or other seng.
This seng enables the boiler to operate via the Central Heang buon being acve
(illuminated). While the Central Heang buon is ON, the boiler operates
connuously or unl the return sensor on the boiler gives the signal to cycle o. The
burner res up only when supply or return water temperature reduces. This seng
should be disabled when CH is no longer seasonally needed.
To select Thermostat Usage or the Central Heang buon, follow the steps below:
1. Remove the boiler’s front panel by removing the four screws that secure the panel.
2. Locate the PC Board (lower le side of unit). Locate the DIP switches on the PC Board
(see below).
3. Adjust DIP switch 2 to one of the following posions
• ON - Central Heang ON buon used. Boiler res based on return water temperature
• OFF (Default) - Thermostat Used
4. Press the CH buon on the controller display. The boiler is now in CH mode.
ON
OFF
DIP Switches
PC Board
Pump Linkage with CH Mode On
When CH Mode is acve, Parameter 41 becomes available. Parameter 41 enables a system pump to
be linked with the boiler pump. When Parameter 41 is selected as “b,” the two pumps will run at the
same me.
Parameter
Number
Seng Descripon
Selecon
A b
41
Linked Operaon Between Main Boiler Pump and CH Pump 1
No
Yes (Linked
Together)
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.
Central Heang
buon
Central Heang Buon
IMPORTANT
Central Heang Mode on the I-Series Boiler is not designed for typical room thermostat control
systems. Central Heang Mode runs the pump(s) and heat constantly and ignores room thermostat
input. This mode may/will overheat zones not equipped with constant recirculaon temperature
control (such as thermostac heads).