Description Of The Boiler - Rinnai Q85SN Installation & Servicing Instructions Manual

3 Description of the boiler
Room sealed boiler
The boiler retreives
combustion air from outside
then discharges the
gasses to the outside.
Condensing
Retrieves heat as much as
possible from the flue gasses.
Water condensates on the
heat exchanger.
Modulating
Stepless higher or
burning according to the heat
demand.
Different boilertypes:
System/Solo boilers:
Q85SN, Q130SN
Q85SP, Q130SP
8
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).
its
The QxxS boiler models have the ability to control a domestic hot water indirect tank.
flue
The boiler is provided with a compact stainless steel heat exchanger with smooth
tubes. This design is a well thought out 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 efficiency. The condensate, which has
no effect on the heat exchanger and the function of the boiler, is drained through
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
lower
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:
Q = Type
205 = Nominal load in (x1,000) BTU
S = System/Solo (C = Combi)
N = Natural Gas (P = Propane Gas)
Q175SN, Q205SN
Q175SP, Q205SP
Rinnai Q205SN
Combi boiler with integrated DHW cylinder
Q175CN
Q175CP