NTI Trinity Lx150 - Page 16

Trinity Lx │Installation and Operation Instructions Lx Series
16
Near Boiler Vent/Air-inlet Piping
Each Trinity Lx is equipped with a short piece of approved CPVC vent pipe (see Table 4-2 CPVC Vent Pipe
Transition Piece). Insert one end into the boiler flue outlet adapter and cement the other to field venting (see
Table 4-4 for approved venting material). The CPVC vent pipe should extend fully into the boiler flue outlet
adapter (see Table 4-2). Ensure that the venting system does not apply a load or strain on the boiler flue outlet
adapter. The manufacturer recommends using two elbows to create a “swing joint” to reduce potential strain on
vent piping and cemented joints; see Figures 4-2 through 4-5.
Gasket Seating - Improper seating can cause leakage and eventual failure of the sealing
gasket. Failure to follow these instructions may result in serious injury or death.
PVC Exhaust Venting – DO NOT insert PVC pipe directly into the boiler exhaust
adapter, as it can deform from the clamping force of the gear clamp. Failure to follow
these instructions may result in gasket failure and/or the dislodging of the exhaust pipe
from the boiler adapter, resulting in property damage, serious injury or death.
Table 4-2 CPVC Vent Pipe Transition Piece (used when venting with PVC)
Model No.
CPVC Vent Pipe Size
CPVC Transition Vent Pipe Length
Full Insertion Depth
Lx150-200
3”
Minimum 5” [127 mm]
2-7/8” [73 mm]
Lx300-600
4”
Minimum 4” [100 mm]
1-7/8” [48 mm]
Lx700-800
6”
Minimum 6” [152 mm]
2-1/2” [63 mm]
Polypropylene or Stainless Steel Venting – When using Polypropylene or Stainless Steel
piping, the appropriate boiler adapters must be used to transition the boiler vent
connections to accept the respective Polypropylene or Stainless Steel venting. See Table
4-3 for a list of approved adapters. Failure to use the correct adapter will result in flue gas
leakage resulting in property damage, serious injury or death.
Table 4-3 Boiler Adapters for Polypropylene and Stainless Steel Venting
Model No.
Vent Material
Venting Brand
Adapter Part No.
1,2
Lx150-200
Polypropylene
DuraVent – PolyPro
300150
Centrotherm - InnoFlue
ISANY0303
Stainless Steel
DuraVent – FasNSeal
300715
Lx300-600
Polypropylene
DuraVent – PolyPro
300151
Centrotherm - InnoFlue
ISAA0404
Stainless Steel
DuraVent – FasNSeal
303631
Lx700-800
Polypropylene
DuraVent – PolyPro
810004281
Centrotherm - InnoFlue
ISAA0606
Stainless Steel
DuraVent – FasNSeal
810005231
Notes:
1
Listed boiler adapters are only approved for use with the respective venting brand; i.e. a PolyPro boiler adapter shall not
be used with InnoFlue venting.
2
PolyPro and FasNSeal boiler adapters are available from DuraVent (1-800-835-4429 or www.duravent.com); InnoFlue
boiler adapters are available from Centrotherm Eco Systems (1-877-434-3432 or www.centrotherm.us.com).
Exhaust venting must be supported to reduce strain on piping joints. Failure to
follow these instructions may result in result in damage, serious injury or death.
In Canada, the first 3 ft (915 mm) of vent piping must be readily accessible for inspection.