Noritz N-0841MC Field Manual

4
Cold water Cold water Gas Gas Hot water Hot water
Condensate
Combustion gas
About 400° F
About 400° F
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About 120° F
Conventional
type
Condensing
Tankless Gas
Water Heater
Water is heated
using the exhaust
gas which is about
400 ° F
.
Primary heat exchanger
Primary heat exchanger
Secondary heat exchanger
Neutralizer
Combustion gas
About 400° F
The condensing tankless gas water heater
discharges condensate.
When heat from the exhaust gas is collected within the
secondary heat exchanger, condensation occurs from
moisture in the exhaust gas and the resulting water is
discharged from the drain pipe (approx. 2 gallons/hour
(GPH) maximum). It is not a water leak. Do not plug or
block the drain line as it must always be allowed to freely
Drain pipe
(Installation example)
The condensing tankless gas water heater
tends to show white steam.
After the exhaust gas passes through the secondary heat
exchanger, it becomes low in temperature and moisture
rich which tends to produce steam at the vent discharge
terminal. This is a normal occurrence.
Condensate
comes out
from here.
During combustion, white
steam may often be seen.
This is normal.
Overview of Condensing Tankless Gas Water Heater
This water heater is a high eciency, fully condensing appliance. Unlike a traditional tankless water heater, a
condensing type captures heat from the exhaust gas and uses it to preheat the incoming cold water as it passes
through the secondary heat exchanger as illustrated below.

Noritz N-0841MC Specifications

General

Brand	Noritz
Model	N-0841MC
Category	Water Heater
Language	English