Installation Guide

Rinnai I-Series Condensing Boiler Combi Manual 95
Parameter
Number
Funcon/Descripon
Selecon
A
(Default)
b
12
DHW Recirculaon piping setup
Crossover
Valve
Dedicated
Return
This parameter is available when Dip SW 3 is in the ON posion.
This sets the DHW recirculaon piping mode, which controls the circula-
on logic. Ensure this corresponds to the DHW recirculaon piping.
13
DHW Recirculaon with mer relay input
Yes No
This parameter is available when Dip SW 3 is in the ON posion.
This enables an external mer to also control the ming for DWH recir-
culaon to more directly correspond to the customers needs.
14
CH temperature limitaon during Simultaneous Operaon
Yes No
This parameter is available when Dip SW 3 or 4 are in the ON posion.
This enables the CH temperature seng to be limited during simultane-
ous DHW and CH operaon. This can prevent unintenonally supplying
high temperature DHW to low temperature CH applicaons.
During simultaneous operaon, supply temperature may be up to 180°F.
When selecng "NO" limitaon, ensure that the CH system and heang
applicaon is designed for this temperature.
15
3 Way Valve Posion During Simultaneous Operaon
Normal Addional CH
This parameter is available when DIP switch 3 or 4 is in the ON posion.
This adjusts the 3 Way Valve posion to open the CH side more for when
the ow of the CH side is reduced due to DHW demand. This may restrict
the DHW capacity.
To enable recirculaon:
1. Remove the boiler’s front panel by removing the four screws that secure the panel.
2. Adjust DIP switch 3 to the ON posion.
3. Select the appropriate parameter sengs from Parameters 12-15 for the system.
See Parameter Seng instrucons for instrucons on adjusng parameters.
PC Board
DIP Switches
Push the PCB
Buon Switch
4 (Red buon)
to move to
Seng Mode.
ON