Navien NPE-32AWE, Руководство по установке

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34 Insta ll ing the Water Heater
3 .6.5 Measuring F lue L ength
The gas removal and air intake systems may be oriented in any
direction (north, south, east or west).
S ome special components
such as elbows are used to help reach certain positions. Each
removal terminal kit includes an adapter for connection to the
water heater and a removal terminal.
The total length of the tubes must not exceed the maximum
value defined. If the removal installation includes elbows while
calculating the total length you must take into account that each
elbow has a resistance equal to a specific linear Leq equivalent
length (see table).
There are two different types of terminals (hori z ontal and
vertical), for both the coaxial removal system and the dual duct
removal system.
Carefully study the diagrams representing the different types of
removal and select the one that best suits the conditions of your
installation. To choose the removal accessories required for each
installation, see the list of accessories on the NAVIEN price list.
Maximum T otal L ength
T y p e
P i p e D iameter
( mm )
O rientation
Maximum
L ength ( m )
Coaxial
Ø 60/100
Hori z ontal 20
Vertical 21
Ø 80/125
Hori z ontal 68
Vertical 7 0
Dual Duct Ø 80/80
Hori z ontal
110
Vertical
E qui v alent L ength of E lbo w s and A da p ters
1. 2
P i p e D iameter
( mm )
E lbo w
E qui v alent
L ength ( m )
Coaxial
Adapter
Ø 60/100 ->
Ø 80/125
- 0.5
Ø 60/100
45 ° 1.2
90 ° 2.4
Ø 80/125
45 ° 1.2
90 ° 2.4
Dual Duct Ø 80/80
45 ° 1.4
90 ° 2.2
3 .6.6 T erminating the F lue
Before installing the water heater, determine what type of flue
termination is appropriate for the installation location and
situation. The subsections that follow describe some typical flue
configurations.
CAUTION
Minimum Clearance to Metering devices and Relief
equipment.
Maintain a minimum hori z ontal clearance
of 1.22 m from electric meters, gas meters, regulators,
and relief equipment. Do not install the water heater
above or below electric meters, gas meters, regulators or
relief equipment unless a 1.22 m hori
z ontal clearance is
maintained.