Installation and Maintenance Manual

Installation: Piping
20 GHND-SVX01C-EN
moved to the right horizontal position, the junction
box must be rotated 90 degrees CCW to clear the
connection. To do this, remove all wires, conduit
and conduit connector from the junction box,
noting location of wires. Move box, using holes
provided. Move
7/8-inch plug from bottom of box to side.
Reconnect all wires according to the unit’s wiring
diagram.
The following instructions apply to Canadian installations
in addition to installation and operating instructions:
1. Installation must conform with local building codes, or
in absence of local codes, with current CSA B149.1,
“Installation Codes for Natural Gas Burning
Appliances and Equipment”, or CSA B149.2,
“Installation Codes for Propane Gas Burning
Appliances and Equipment”.
2. Any references to U.S. standards or codes in these
instructions are to be ignored and the applicable
Canadian standards or codes applied.
3. If using a metal vent system under positive gauge
pr
essure in Canada, a slip fit vent connection must be
secured by at least two corrosion-resistant screws, or
other mechanical locking means.
4. The vent shall not terminate:
a. Less than six feet (1.8 m) from a combustion air inlet
o
r another appliance.
b. Less than three feet (1 m) from any other building
opening or any gas service regulator.
c. Directly above a gas utility meter or service
regulator.
Table 5. Vent systems—termination clearance
requirements
(a)
(a) If the vent terminal is to be installed near ground level, the vent terminal
must be positioned at least twelve inches above the maximum antici-
pated snow depth (see following for Canadian requirements).
Structure
Minimum for
Termination Locations
Door, window or any gravity air inlet 4 feet below
4 feet horizontally
1 foot above
Forced air inlet within 10 ft. 3 feet above
Adjoining building or parapet 6 feet
Adjacent public walkways 7 feet above grade
Figure 11. Adaptor installation
Refer to specification table and installation manual for proper usage.
Note: The reducer must be field supplied for 100, 125, 150, and
175 MBh unit sizes.