Venting And Combustion Air; Requirements For Installation In Canada - Lochinvar Shield SNR200-100 Installation And Service Manual

2
General venting

Venting and combustion air

The Shield water heater must be vented and
DANGER
supplied with combustion and ventilation
air as described in this section. Ensure the
vent and air piping and the combustion air
supply comply with these instructions
regarding vent system, air system, and
combustion air quality. See also Section 1 of
this manual.
Inspect finished vent and air piping
thoroughly to ensure all are airtight and
comply with the instructions provided and
with all requirements of applicable codes.
Failure to provide a properly installed vent
and air system will cause severe personal
injury or death.
Vent piping materials
Use only the materials listed in Table 2A
WARNING
below for vent pipe, and fittings. Failure to
comply could result in severe personal
injury, death, or substantial property
damage.
Installation must comply with local
NOTICE
requirements and with the National Fuel Gas
Code, ANSI Z223.1 for U.S. installations or
CSA B149.1 for Canadian installations.
For closet and alcove installations, CPVC
WARNING
material MUST BE used in a closet/alcove
structure. Failure to follow this warning
could result in fire, personal injury, or death.
Table 2A Vent Pipe and Fittings
All vent pipe materials and fittings must comply with the following:
Item
Vent pipe and fittings
Pipe cement/primer
NOTICE: DO NOT USE CELLULAR (FOAM) CORE PIPE
(continued)
Material
PVC schedule 40
PVC-DWV
CPVC schedule 40
PVC
CPVC
TM
All vent pipes must be glued, properly
NOTICE
supported, and the exhaust must be pitched
a minimum of a 1/4 inch per foot back to the
water heater (to allow drainage of
condensate).
This appliance requires a special venting
WARNING
system.
appliance must be made with the CPVC pipe
section installed in the appliance. The field
provided vent fittings must be cemented to
the CPVC pipe section. Use only the vent
materials, primer and cement specified in
this manual to make the vent connections.
Failure to follow this warning could result in
fire, personal injury, or death.

Requirements for installation in Canada

1. Installations must be made with a vent pipe system
certified to ULC-S636.
IPEX is an approved vent manufacturer in Canada
supplying vent material listed to ULC-S636.
2. The first three (3) feet of plastic vent pipe from the
appliance flue outlet must be readily accessible for visual
inspection.
3. The components of the certified vent system must not be
interchanged with other vent systems or unlisted
pipe/fittings. For concentric vent installations, the inner
vent tube must be replaced with field supplied certified
vent material to comply with this requirement.
4. The 3" Concentric Vent Kit available from Lochinvar (see
Section 3 – Sidewall Termination – Optional Concentric
Vent) and the 3" Concentric Vent Kit available from IPEX
are both approved for use on the Shield Water Heater. Both
kits are listed to the ULC-S636 standard for use in Canada.
Standards for installation in:
United States
ANSI/ASTM D1785
ANSI/ASTM D2665
ANSI/ASTM F441
ANSI/ASTM D2564
ANSI/ASTM F493
Installation & Service Manual
The vent connection to the
Canada
CPVC and PVC venting must be
ULC-S636 Certified. IPEX is an
approved manufacturer in Canada
supplying vent material listed to
ULC-S636.
IPEX System 636
Cements & Primers
15