UVDR Series Unvented Gas Fireplaces
| D | 1/2" |
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5" | A | 1/2” Clearance |
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| not Required at |
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A |
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Front View |
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| Side View | |||
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| T226 |
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| A |
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36” Models |
| 39” |
| 38¹⁄₄” |
| 21” |
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| 22’ |
42” Models |
| 45” |
| 42¹⁄₄” |
| 22” |
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| 32” |
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Fig. 4 Framing dimensions.
Nailing
Flanges
FP1532
Fig. 5 Secure firebox.
Step 5: Gas Piping and Connection
The gas piping must be installed in accordance with local codes or, in the absence of local codes, in accor- dance with the National Fuel Gas Code, ANSI Z223.1/ NFPA 54, latest edition.
The normal gas connection is 1/2” NPT, made at the left side facing the unit. If a right side connection is desired, the connecting pipe must be led at the rear of the fire- place to terminate at the left hand side for connection to the fireplace.
Noncombustible Insulation
| Side Refractory |
1" |
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Min. | Refractory |
| Cement |
Fireplace |
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Outer Wrap | 1/2” Gas Pipe |
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| T227 |
Fig. 6 Gas line installation.
Piping should be tested for leaks prior to final wall installation. Test for leaks using soap and water solution after completing the connection. DO NOT USE OPEN FLAME.
Step 6: Optional Procedure For Cold Climate Instal- lations
The insulation and sealing of the enclosure around the fireplace is very important in cold climates. If the en- closure is insulated and sealed properly, you can avoid future cold air problems. The time taken to install the firebox correctly is well worthwhile. The following steps are to stop potential cold air problems.
Insulation of the Fireplace Enclosure
When in a chase or an outside wall, the fireplace en- closure should be insulated like any other wall of your home. Insulation should be installed on the outside wall(s) and the wall above the fireplace.
Insulate to Seal Under the Fireplace
Insulating under the fireplace is beneficial for installa- tions on a concrete slab. The fireplace should be placed on insulating board. It is important that a hard, rigid surface be maintained, so do not use fiberglass insula- tion for this purpose.
CAUTION: WHEN INSTALLING A FIREPLACE IN AN INSULATED ENCLOSURE, BE SURE TO MAINTAIN ALL MARKED AIR SPACES.
Seal Seams
Seal the seams of the fireplace where the outer wall meets the bottom pan and the front face. Also seal between the fireplace and finishing materials. Use high temperature caulk. Refer to Figure 7 for details of seal- ing spaces between the fireplace and finishing materi- als. Note the small amount of insulation installed across the top of the fireplace and down the sides as a backing for the caulk.
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