Installation Guide

Installation & Servicing Instructions Rinnai Q-Series
8
3 Description of the boiler
The Rinnai Q boiler is a room sealed, condensing and modulating central heating
boiler, with an optional integrated DHW cylinder (integrated DHW on the Q175C only).
The QxxS boiler models have the ability to control a domestic hot water indirect tank.
The boiler is provided with a compact stainless steel heat exchanger with smooth
tubes. This design is a well engineered principle using durable materials.
The boiler burns gas for supplying heat. The heat is transferred in the heat exchanger
to the water in the central heating system. By cooling down the exhaust gases
condensate is formed. This results in high effi ciency. The condensate, which has
no effect on the heat exchanger and the function of the boiler, is drained through a
condensate collector trap.
The boiler is provided with an intelligent control system (CMS Control Management
System). The boiler anticipates the heat demand of the central heating system or the
domestic hot water facility system.
When an outdoor sensor is connected to the boiler it will operate weather dependantly
using outdoor reset. This means that the boiler control measures the outside
temperature and supply temperature. With this data the boiler calculates the optimal
supply temperature for the installation.
Explanation of the type indication: Rinnai Q205SN
Q = Type
205 = Nominal load in (x1,000) BTU
S = System/Solo (C = Combi)
N = Natural Gas (P = Propane Gas)
Different boilertypes:
Room sealed boiler
The boiler retreives its
combustion air from outside
then discharges the fl ue
gasses to the outside.
Condensing
Retrieves heat as much as
possible from the fl ue gasses.
Water condensates on the
heat exchanger.
Modulating
Stepless higher or lower
burning according to the heat
demand.
System/Solo boilers: Combi boiler with integrated DHW cylinder
Q85SN, Q130SN Q175SN, Q205SN Q175CN
Q85SP, Q130SP Q175SP, Q205SP Q175CP