Vermont Casting DVRT41 manual Vertical Sidewall Installation Flex Vent Pipe, Step

DVRT41 Direct Vent Gas Fireplace

Sealing vent pipe and firestop gaps with high temperature sealant will restrict cold air being drawn in around fireplace.

X

X

FP1182

Fig. 34 Horizontal length requirement.

Step 7

Apply high temperature sealant to 4” (102mm) and 7” (178mm) collars or the termination one inch away from crimped end. Guide the vent terminations 4” and 7” collard into their respective vent pipes. Double check that the vent pipes overlap the collars by 2” (51mm). Secure the termination to the wall with screws provided and caulk around the wall plate to weatherproof. As an alternative to screwing the termination directly to the wall, you may also use expanding plugs or an ap- proved exterior construction adhesive. You may also attach the termination with screws through the inner body into the 4” vent pipe, however for this method, you must extend the 4” pipe approximately 6” (152mm) beyond the outer face of the wall.

Support horizontal pipes every 36” (914mm) with metal pipe straps.

Vertical Sidewall Installation

Flex Vent Pipe

NOTE: The 40” (1016mm) flex vent is used for 90° off the top of the unit then out the back wall.

Follow Step 1 and 2 on Page 17.

Step 3

Install the four (4) spacer springs on the 4” flex vent pipe. When installing the spacer springs around the 4” pipe, stretch the spring to approximately 15” (381mm), wrap the spring around the pipe and interlock the ends of the spacer spring approximately 2” (51mm). Meas- ure 6³⁄₄” (172mm) from the end of the pipe. Place the

next spring 5” (127mm) from the previously installed spring. Place the next spring 6” (152mm) from the last spring. Finally place the last spring 12” (305mm) from the last spring installed. (Fig. 35)

4” Flex

Vent Pipe

12"

(305mm)

Spacer

Spring

6"

(152mm)

5"

(127mm)

6³⁄₄"

(172mm)

FP1474

Fig. 35 Install spacer springs.

Step 4

Install the 4” (102mm) flex vent pipe to the appliance collar as described on Page 12. Secure the end with the first spring 6³⁄₄” (172mm) from the flex pipe end to the unit.

Step 5

Slide the 7” (178mm) flex vent pipe over the 4” flex vent pipe and secure the 7” collar as described on Page 12.

Step 6

Bend the flex pipe horizontal so the bottom of the horizontal pipe measure 6¹⁄₂” (165mm) from the top of the unit immediately after the 90° formation. (Fig. 36) Be sure to follow the 1/2” (13mm) rise in a 12” (305mm) horizontal run rule.

Step 7

Install the 4” flex then 7” flex to the termination.

6¹⁄₂" (165mm)

FP1475

Fig. 36 Bend flex vent at 90° so horizontal portion is 6¹⁄₂” (165mm) off top of unit.

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