Operating instructions

INDUCED DRAFT HIGH EFFICIENCY BOILERS
Maximum Horizontal Vent Length For StainlessSteelVentPipe - 30'
Plus One 90° Elbow PlusVent Terminal.
Minimum Horizontal VentLength - 2' Plus One 90° ElbowVent
Termination.
Additional elbowsare equivalentto 6 feetof straightpipe for 4" di-
ameter 90° elbowor 3 feet of straight pipe for 3" diameter 90° elbow.
2,3, 4, 5, Section Boilersuse 3"vent pipe;for 6, 7 SectionBoilersuse
4"vent pipe.
CHOICE OF VENT PIPE MATERIAL
1. U.L. ListedZ-FlexZ-VentStainlessSteelVent Pipe.
2. U.L.ListedHeat-Fab Saf-T-Vent Stainless SteelVent Pipe.
3. U.L. ListedFlex-LStar-34StainlessSteelVent Pipe.
4. U.L. ListedProTechSystemsFasNSealStainlessSteelVent Pipe.
Figure 10 - Induced Draft High Efficiency boilers
Optional Termination Fitting
T Jemlund S_deWall Vent Hood
VHolo3"for 2, 3, 4& 5 Section Boilers
VH-I_4" for 6 & 7 Section _i|ers
Termination Fitting
_° Elbow, pointing down, same matetiai and
pipe size as venting systems equtped with
screen (Min, I/4" Mesh) to keep birds outs
Fot a combustib|e wa|l, use a thimb|e_ Select as
fo|iows:
Vent Pipe: Z-Vent, SafoT_Vent, Star 34
_tmble: Simpson Duravent Thimb|e --
# 3G_¢_,/T(3% # 4GV_t#T (4")
Vent Pt_: FasNSeal
Thimble: FasNSea| Wal| Thimble
#FSWT03-3'; FSWT04-4 _'
PRchDown Toward
Outside 1i4" Per Foot
Pitch Down Towa_
Outside 1/4" Per Foot
_vel