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HTP EFT-80 Installation & Maintenance Guide

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LP-387 REV. 12.15.14
Figure 17 Piping Exhaust around Obstructions Suggested Condensate Removal
E. EXHAUST VENT AND INTAKE PIPE SIZING
1. The exhaust vent and intake pipes are 3” for EFT-55/80/110/155/199/285 models, and 4” for the EFT-399.
2. The total equivalent length of exhaust vent and intake pipe should not exceed 200 feet for all models EXCEPT the EFT-285. Total
equivalent length for the EFT-285 should not exceed 150 feet.
a. The equivalent length of friction loss in elbows, tees, and other fittings are listed in Table 11.
FRICTION LOSS EQUIVALENT FOR STAINLESS OR PLASTIC PIPING AND FITTINGS
FITTING DESCRIPTION
3”
4”
90
o
elbow short radius
5’
5’
90
o
elbow long radius
4’
4’
45
o
elbow
3’
3’
Coupling
0’
0’
Tee (intake only)
0’
0’
V Series Vent Kit
1’
1’
AL20 4C Vent Terminal
1’
1’
Pipe (All Materials)
1’
1’
Table 11 - *Friction loss for long radius elbow is 1’ less. NOTE: Consult Polypropylene venting instructions for friction loss and pressure
drop equivalents.

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HTP EFT-80 Specifications

General IconGeneral
BrandHTP
ModelEFT-80
CategoryBoiler
LanguageEnglish

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