Navien NPE-32AWE, Installation Manual

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3 .1 Choosing an Installation Location
When c hoosing an insta ll ation l o c ation, you must ensure that
the l o c ation provides adequate cl earan c e for the water heater,
adequate flue and drainage options, and suffi c ient a cc ess to gas,
water, and e l e c tri c a l supp l ies.
Carefu ll y c onsider the fo ll owing fa c tors when c hoosing an
insta ll ation l o c ation:
Compliance R equirements
T his water heater must be insta ll ed by qua l ified personne l
in c omp l ian c e with the app l i c ab l e Laws and R egu l ations.
In genera l , these Laws and R egu l ations are the Basi c Gas
Insta ll ation S tandards, the Heating, Air Conditioning and
Domesti c Water Insta ll ation R egu l ation and a ll other l o c a l
regu l ations.
A ccess to Utilities
Water – the insta ll ation l o c ation shou l d be near where the
domesti c water supp l y enters the bui l ding.
Gas – the insta ll ation l o c ation shou l d be near where the gas
supp l y enters the bui l ding.
E l e c tri c ity – the insta ll ation l o c ation shou l d be near where the
e l e c tri c a l supp l y enters the bui l ding.
Humidity and Contact with W ater
When insta ll ing the water heater, avoid p l a c es with ex c essive
humidity. T he water heater has e l e c tri c gas ignition c omponents.
Water spray or droppings c an get inside the water heater and
damage the ignition system. T he water heater must be insta ll ed
in a way to ensure that the gas ignition system c omponents
are prote c ted from water (dripping, spraying, rain, et c .) during
operation and servi c e.
If the water heater is insta ll ed in a very humid room (a shower
room or bathroom, for examp l e), the Low Vo l tage regu l ation
and the T e c hni c a l Bui l ding Code must be observed for c orre c t
insta ll ation.
P roximity to F ixtures and A ppliances
Insta ll the water heater near fixtures that de l iver or use hot
water, su c h as bathroom, kit c hen, and l aundry room fau c ets.
S e l e c t a l o c ation that minimi z es the water piping required
between major fixtures. If the distan c es are l ong or if the user
requires “instant“ hot water, insta ll ation of a re c ir c u l ation l ine
whi c h c ir c u l ates domesti c hot water ba c k to the water heater
from the furthest fixture is re c ommended. Insu l ate as mu c h of
the hot water supp l y and re c ir c u l ation l ines as possib l e.
A dequate D rainage
T he water heater produ c es a signi c ant amount of c ondensate
during operation. T his c ondensate must be removed from
the water heater, and suitab l y treated if nationa l l egis l ation
so requires. T he water heater shou l d be l o c ated near a
suitab l e drain and where damage from a possib l e l eak
wi ll be minima l . Insta ll ing the water heater in a l o c ation
without a drain wi ll void the warranty and Navien wi ll not
be responsib l e for water damage that o cc ur as a resu l t.
For more information about c ondensate drainage, refer to
“3.5 Conne c ting the Condensate Drain Line” on page 2 7 .
T he water heater must be l o c ated in an area where l eakage of
the unit or c onne c tions wi ll not resu l t in damage to the area
adja c ent to the app l ian c e or to l ower oors of the stru c ture.
When su c h l o c ations c annot be found, insta ll ation of an
adequate l y drained drain pan under the water heater is high l y
re c ommended. When insta ll ing the drain pan, ensure that the
insta ll ation does not restri c t c ombustion air ow.
A dequate F lue and Ventilation
S e l e c t a l o c ation that requires minima ue. Consider ue
restri c tions c aused by windows, doors, air intakes, gas meters,
fo l iage, and other bui l dings. For more information about ue
system, refer to “3.6 F l ue S ystem” on page 28.
T o ensure adequate ue and venti l ation, fo ll ow these guide l ines:
Maintain proper cl earan c es from any openings in the bui l ding.
Insta ll the water heater with a minimum cl earan c e of 300 mm
above an exterior grade or as required by l o c a l c odes.
Do not en cl ose the ue termination.
Insta ll the exhaust ue in an area that is free from any
obstru c tions, where the exhaust wi ll not a cc umu l ate.
Do not insta ll the water heater where moisture from the
exhaust may dis c o l our or damage wa ll s.
Do not insta ll the water heater in bathrooms, bedrooms or
any other o cc upied rooms that are norma ll y kept cl osed or
not adequate l y venti l ated.
T he requirements and re c ommendations stipu l ated in the
R egu l ation for Heating Insta ll ations in Bui l dings ( R I T E) and any
other app l i c ab l e l egis l ation in this e l d must be observed.
No spe c i c venti l ation is required in the room the water
heater is insta ll ed in. If it is insta ll ed in a c upboard or
c ompartment, no spe c i c venti l ation is required, providing the
aforementioned dimensions are observed. T he requirements
and re c ommendations stipu l ated in the R egu l ation for Heating
Insta ll ations in Bui l dings ( R I T E) and any other app l i c ab l e
l egis l ation in this e l d must be observed.
3 . Installing the W ater Heater
Insta ll ing the Water Heater