Vermont Casting RHE42, RHE25 Common Flue Installations, Liner Installation, Draft Relief Opening

Vermont Castings, Majestic Products RHE Natural Vent Insert

4.Flue damper must be fully blocked in the open position or removed for installation.

5.The chimney must be clean and in good working order and constructed of noncombustible materials.

6.Make sure that all chimney cleanouts fit properly so air cannot leak into the chimney.

7.Glass door, screen kits and log grate may be removed for installation of insert into factory built fireplace.

8.Install the insert without the trim frame and make all gas, venting and electrical connections.

9.Install decorative trim frame. Please refer to Frame Assembly and Mounting instructions on this manual.

Common Flue Installations

In some areas it is possible to vent more than one gas fireplace into the same flue. You must ensure the flue being shared has the proper capacity to handle both fireplaces. Check installation codes for venting capacity information.

As always it is best to check with the authority having jurisdiction prior to commencement of the installation.

Liner Installation

Insert liner from top of chimney through the damper opening and attach to 3" flue collar (for RHE25); 4" flue collar (for RHE32 & RHE42). For best results use three (3) sheet metal screws and a hose clamp.

For natural draft inserts packing fibreglass insulation around the liner in the damper area will isolate the fireplace cavity from the chimney and prevent drafts and noises during operation.

In case the fireplace opening is only minimum height (17¹⁄₂" for RHE25) (20" for RHE32) (22³⁄₄" for RHE42) and access from the front is not possible, remove the flue collar plate - unscrew and slide out from the back of the unit. Now attach the liner to the flue collar, lift up and simply slide flue collar plate back onto the unit top. It is important the plate is completely inserted and the front screw is fastened again in order to line up the flue outlet and the liner properly. (Fig. 10)

If fireplace lintel is wider than 8" (205mm), the height of the fireplace opening must be 25" (635mm) to allow for a 90° offset elbow to be installed.

Draft Relief Opening

This insert is equipped with a draft-relief opening which receives its dilution air supply through the opening behind the louvres. These openings must not be obstructed or altered in any way. (Fig. 11)

	Damper		Chimney Liner
				Damper
			Chimney
Flue			Liner
Collar Plate		Clamp	Screw	Clamp
				FP1354
Fig. 10	Remove flue collar plate and attach to flue collar.

Test Chimney Draw

A "Chimney Draw" test must be made before the installation is complete.

1.Close all doors and windows in the home and start exhaust fans in the kitchen and bathroom.

2.Light unit and operate for 5 minutes.

3.Hold an ignited match or cigarette in front of the unit. Refer to Figure 11 for the location of the draft hood opening.

4.Check to make sure smoke from the match or cigarette is drawn into the fireplace. If it is not, turn the unit off and check for causes creating the lack of adequate draft.

Test for Draft at This Location

FP1371

Fig. 11 Hold an ignited match in front of fireplace.

Vent Safety System

These inserts are equipped with a vent safety shut down switch. This switch is factory installed, wired and tested. Check and make sure the switch and wires are in the proper position. The safety switch is heat acti- vated and wired in series with the pilot system. (Fig. 12)

Bracket

Vent Safety

Switch

FP1372

Fig. 12 Vent safety switch.

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