Install Instructions

LAARS Heating Systems
Page 12
national and local codes must be followed! The use
of thimbles, restops and other protective devices,
when penetrating combustible or noncombustible
construction, must be in accordance with all applicable
national and local codes.
Vertical vents of the induced draft JVH boilers must
be installed in accordance with the code requirement
for Category 1, Fan Assisted Appliances. Follow the
requirements as indicated in the latest edition of ANSI
Z223.1/NFPA 54, sizing of Category I Venting System
and Annex F, or in Canada, follow the instruction of
CAN/CGA-B149 installation code.
An unused lined chimney can be used as a raceway
for single wall vent pipe, (see Figure 3). Never run
vent pipe through a ue that has another appliance
attached to it.
3D-1. Horizontal Venting - Category III
(JVH only)
Category III horizontal venting requires a stainless
steel venting system that is in compliance with the
requirements of UL 1738 in the United States or
ULC–S636 in Canada and in accordance with this
section and with the venting system manufacturer’s
Instructions. Plastic venting of any kind is not
permitted. The venting system must be attached to the
boiler vent collar, using the appropriate Boiler Adapter.
DO NOT ATTACH WITH SCREWS.
Common venting is not allowed in Category III
systems unless designed and certied by a licensed
Professional Engineer.
3D-2 Venting Connections (JVH only)
Refer to venting supplier’s instructions for complete
parts list and method of installation. Table 1 lists
the manufacturers of products that comply with the
requirements of UL 1738 / ULC-S636 and the part
numbers of component parts. Do not mix venting
suppliers and models in venting systems. Failure
to comply could result in personal injury, property
damage, or death.
Installations must comply with applicable national,
state and local codes. The entire vent system must not
exceed the size specied in Table 2.
The following criteria must be observed:
1. If the horizontal run exceeds 5 ft (1.5 m) attach a
vertical section of not less than 12 in. (305 mm) to the
boiler vent collar using the appropriate adapter listed
above.
2. Support the vent runs with overhead hangers at
intervals specied in the vent system manufacturer’s
instructions.
3. Pitch the vent run down toward the vent terminal ¼
in. per foot (20mm per m).
The venting system must be attached to the boiler
vent collar, using the appropriate Boiler Adapter listed
above. DO NOT ATTACH WITH SCREWS.
All JVH models are to be vented with a 4” diameter
venting system of the equivalent length specied in
Table 4. The venting system of the JVH-225 may
be increased to 6” diameter to permit the longer
equivalent length indicated in Table 4. When installing
the 6” diameter system, install the Boiler Adapter to
the boiler ue collar and an Increaser or Increasers
to the Boiler Adapter to transition to the 6” diameter
system.
ALLOWABLE SINGLE WALL STAINLESS STEEL VENT SUPPLIERS AND PART NUMBERS
MFR MODEL NUMBER (ABBREVIATED)
Example Components
Selkirk
DuraVent
NovaFlex
Trade Name / Model
Safe-T Vent EZ Seal FasNSeal Z Flex
90° Elbow 9x14 FSELB90xx 2SVEExx90
Pipe 9x07 FSVLxxxx 2SVEPxxxx
Boiler Adapter 5x01BOI FSAAUx
2SVSAxx (OD)
2SVSTTAxx (ID)
Horizontal Termination (bird screen) 9x92 FSBSx 2SVSTPXxx
Vertical Termination (rain cap) 5X00CI FSRCx 2SVSRCxx
Inlet Air Termination 9xTERM FSAIHXX* 2SVSTEXxx90
Adapter SS to CPVC 9x5xCPVC
FSA-xxFNSM-xPVCF
Adapter SS to PP FSAAUx-xPP 2ZDCPVCx**
*4", 6" & 7" only **up to 6"
Size
Diameter
No. of
Elbows
Horizontal Run Length
in.
mm
ft.
m
50 - 160
4
102
4
35
10.7
225
4
102
2
10
3.0
225
6
152
4
35
10.7
Horizontal Venting Configuration
Table 1. Allowable Single Wall Stainless Steel Vent Manufacturers and Part Numbers
NOTE: “x”, “xx”, and “xxxx” refer to variations in nominal size. See manufacturer’s catalog for a particular application.