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Marquis 38 10
VENTING INSTRUCTIONS
VENTING
The appliance will not function without being connected to a proper venting system.
This appliance may use 4” and 7” gas flex vents with DV-38 listed vent components, or Simpson Duravent
4 x 6-5/8 direct vent systems with Simpson Dura-vent Adaptor (SDA-3). 7” dia. rigid vent may directly
replace 7” dia. flex vent in all applications.
For best venting performance using gas flex vent, here are some general venting rules that we recommend:
1. Use only 4”and 7” diameter 2-ply certified gas flex vent in a co-axial configuration.
2. Maintain a minimum clearance of 1” to the sides and bottom and 2” to the top outside surface of the
vent pipe and combustible material.
3. Observe any local code restrictions, if any, regarding the installation of this type of gas appliance.
4. Observe the venting chart given in this manual.
5. Use a vent spacer between the inside and outside flex vents at every 3 ft intervals.
6. Never slope horizontal running vents downwards.
7. VERY IMPORTANT: Maintain at least an upward slope of 1” for every 1 ft of horizontal run on
the rear vented models.
8. Terminate the vent with a vent termination supplied by Archgard Industries Ltd.
9. Support horizontal running vents every 3 ft to prevent it from sagging.
10. Wall terminal must be installed a minimum of 12” above grade measured from bottom of terminal.
VENT TERMINATION
1. See “ALLOWABLE TERMINATION LOCATIONS” diagram (page 13) to establish a suitable vent
termination location.
2. In heavy snowfall areas make sure vent termination is located where it can not be blocked by snow
from snow removal equipment.
3. Locate vent termination away from plants, bushes or any other object on or near the vent termination
that will interfere or obstruct the air flow around it.
4. DO NOT recess vent termination into walls, sidings or planters.
5. Vent terminations located below 7ft from grade level or anywhere it can be a burn hazard to the
public, such as patios and balconies, must be protected with an Archgard approved termination cage.
6. Always ensure bottom of Vent Terminal is a minimum of 12” above grade.