51
Venting Straight Up Through Roof
An Attic Insulation Shield must be installed where the vent passes from a lower living space into an attic space where the
chimney is not enclosed. It is designed to keep insulation materials away from the chimney (see Figure 7a).
When installing the Attic Insulation Shield where the chimney passes from a living space to an attic space, install the shield
from below and nail in place using 1" spiral nails.
A fire stop must be installed on the bottom side of the joists when passing through a ceiling or floor. If an attic insulation
shield is to be used, a fire stop is not required.
Using Flex Bends
Avoid cutting joists by offsetting the flex pipe (see Figure 7b).
When using 45° bends a bend support is required directly above the highest bend.
When installing a bend in a joist area a minimum of 4" clearance to combustible to the top of bend must be maintained,
sides and bottom of pipe, a 1" clearance to combustibles must be maintained. If running horizontal through an area a 2"
minimum clearance to the top of the horizontal pipe must be maintained.
Maximum vertical height of system should not exceed 43 feet.
Use roof support and 7" rigid pipe at roof level. Flex not permitted within roof support.
When penetrating the roof a rigid 7" galvanized pipe must be used. Attach the 7" flex to the 7" rigid with high temperature
sealant, secure with four screws assuring the flex and rigid pipe are secured. 5" flex pipe must be secured the same way
with 4 screws but must penetrate the 5" flex and 5" section of termination. Attach 7" rigid pipe to 7" termination with sealant
and screw with 4 sheet metal screws (see Figure 7c).
Vertical termination clearance is 18" [45.7cm] above the roof, measured from highest point of exit on the roof line.
Support vertical pipes to maintain minimum of one inch or greater clearances to combustibles.
Roof Flashing
Ensure that you have the proper roof flashing by checking your roof pitch using a level and two rulers, or by using a roof
pitch card (see Figure 7a).
Slide a Roof Flashing suitable to your roof slope over the vent. Place the edge of the flashing plate that will be on the higher
part of the roof slope under the shingles. Both the sides and the lower edge lay on top of the shingles.
NOTE: At the top edge of the flashing plate, lift the shingles and nail the plate to the roof deck, then cement the
shingles to the plate with a suitable waterproof mastic.
Ensure that the chimney is plumb. Square up the flashing plate and nail in place to the roof deck. Use 12 nails with
neoprene washers or cover the heads with a suitable waterproof mastic. Wrap the storm collar around the vent above the
flashing. Secure the ends together loosely with nut and bolt supplied. Slide the collar down the vent until it comes in contact
with the flashing. Tighten the bolt and seal the Storm Collar to the vent with a suitable waterproof non-combustible mastic.
The flashing and storm collar should be painted to match the roof shingles. This will extend its life and improve the
appearance. Clean, prime and paint with suitable painting products.
Содержание Marquis Infinite MQRB5143LP
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Страница 41: ...41 Photos Bottom of Unit with IPI Module Light Module IPI Valve...
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Страница 43: ...43 IPI Valve IPI Valve...
Страница 44: ...44 Millivolt Valve Light Module Millivolt Valve...
Страница 49: ...49 Venting Examples All horizontal runs have a minimum rise per foot...
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