INSTALLATION AND OPERATION INSTRUCTIONS
1-6
DC SERIES BOILERS / WATER HEATERS
DC 15-95, DC 15-96, DC 20-125, DC 33-160
Do not use ABS or any cellular core pipe for exhaust venting.
Use of cellular core PVC (ASTM F891), cellular core CPVC, or Radel®
(polyphenolsulfone) in venting systems shall be prohibited.
The boiler / water heater offers 3" venting connections. Fittings are to be used
to adapt to the appropriate diameter
(see Vent Travel below).
CPVC or PVC
Exhaust Venting is to be inserted directly into the 3" female stainless steel fitting
on left side of the boiler’s top panel. The clamp must be tightened to secure the
pipe into the fitting. If PPs materials are being used, ensure the proper adapter is
used to transition from the Schedule 40 diameter to the PPs size diameter.
For PPs material, use the 3" transition/ adaptor fitting (Sch 40 to PPs) offered
by the respective PPs manufacturers Centrotherm /
Innoflue
TM
(their part #
ISAA0303) or M&G Dura Vent /PolyPro (#3PPS-AD). For PPs material exposed to
outdoor weather, follow the venting suppliers’ recommendations on UV protection.
Combustion air piping is inserted directly into the 3" female stainless steel fitting
on the right
(see Section 1.4.7).
Venting shall be supported in accordance with applicable code.
1.4.3 Vent Travel
CPVC or PPs (Rigid Single Wall) piping is the standard venting option; with
this, the DC Series boilers / water heaters, for example, can be vented up to
120 equivalent feet from the vent termination using 3". The actual vent travel
allowance is reduced for fittings in accordance with
Table 3.
– e.g. for the models
listed above using 6 x 90º CPVC long sweep elbows, the maximum lineal
measure of pipe allowed using 3" pipe is 90 feet (120' – (6 x 5' = 30) = 90').
For 3" Flexible PPs, up to 35 actual lineal feet are allowed in a nominally vertical
orientation (>45°). The equivalent length of 3" Flexible PPs shall be computed
using a multiple of 1.4:1, e.g. 35' x 1.4 = 49' equivalent. The balance of the
venting allowance is still available for use with rigid PPs piping material. 2"
Flexible PPs is not allowed.
EXHAUST PIPE SIZE/FITTINGS
MAXIMUM EQUIVALENT LENGTH
Schedule 40 PVC, CPVC or PPs – Allowances are for each side separately.
2"
35'
3"
120'
2" or 3" 90' Long Sweep Vent Elbow
Allow 5 equivalent feet
2" or 3" 90' Short Sweep Vent Elbow
Allow 8 equivalent feet
2" or 3" 45' Vent Elbow
Allow 3 equivalent feet
PPS
PPs 87-90' Elbow
Allow 8 equivalent feet
Flex PPS
3" PPs Flex
(Max. 35) actual feet times 1.4
Table 3: Maximum Exhaust Venting Length
Exhaust venting must slope down towards the boiler / water heater with a pitch
of at least 1/4" per foot (PPs vent: follow PPs manufacturer requirements) so
condensate runs back towards the trap. Support should be provided for intake
and vent piping, particularly so for horizontal runs (follow local code).
WARNING
Do not mix venting materials
from different Manufacturers.
These venting materials are
designed to be installed as
part of a complete system.
Failure to comply may result
in severe personal injury or
death.
WARNING
Fully insert the approved
venting material into the
boilers / water heaters
exhaust outlet and tighten
clamp to ensure the venting
connection is locked in place.
Содержание DC Series
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