Safety Devices
Adequate combustion and ventilation air must be pro- vided. The flow of combustion and ventilation air MUST NOT be obstructed.
Provide adequate clearances around the air opening into the combustion chamber; and adequate accessibili- ty clearance for servicing and proper operation. NEVER obstruct the front opening of the heater or cover the top and bottom louvres (grilles).
These heaters are equipped with a pilot system fea- turing an Oxygen Depletion Sensor (O.D.S.)
Report any parts damaged in shipment to your dealer.
Description
The UVS
This model is available as Natural or Propane gas, equipped with a standing pilot.
The UVS33 model is shipped at 20,000 BTU/hr. It includes orifices for operation at 15,000 and 10,000 BTU/hr. When operating at 10,000 BTU/hr, the unit is approved for bedroom use. Based on the National Fuel Gas Code and local codes, please match the correct orfice size and BTU's to corresponding room size. This conversion must not be completed in the field. Once final rate is established, remaining orifices are to be discarded, not left behind with the fireplace.
Orifice Conversion Instructions
1.Locate burner with tiles, pilot shield and orifice.
2.Unscrew two hex nuts connecting pilot shield to burner with tiles. Move pilot shield to right. (Fig. 2)
3.Remove sheet metal screws at left and right side of burner with tiles and remove burner.
4.Use 7/16" wrench to remove orifice. (Fig. 3) Install desired orifice in place of orifice just removed. See Table 3 . Use approved pipe compound for pipe threads.
5.Remove air shutter, if necessary (Refer to Table 1), from burner pan by removing shutter retaining screw then air shutter. (Fig. 4)
6.Install correct air shutter on burner pan. Replace shutter retaining screw. Adjust the air shutter to the appropriate settings as listed in Table 1.
7.Reinstall burner with tiles and pilot shield. Check for leaks with soapy water solution.
UVS33/36
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| Burner with |
| Pilot Shield |
| Orifice | Tiles | Hex Nut | |
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| Pilot |
Air |
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Shutter |
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| Hex |
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| Nut |
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| Log Supports | Sheet | |
CO101a | Sheet Metal Screw |
| Metal Screw | |
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Fig. 2 Manifold assembly and orifice location.
Orifice
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| CO102 |
Fig. 3 Replace orifice. |
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Front | Air Shutter | Burner Pan |
View | Retaining |
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Screw |
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| Air Shutter |
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| Adjustment | Air Shutter |
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| CO103 |
Fig. 4 Use appropriate air shutter and adjust according to Table 1.
Clearance to Combustibles
Top of unit to ceiling | 36" (914 mm) |
Front of unit to combustibles | 36' (914 mm) |
Appliance |
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Top | 0" (0 mm) |
Bottom | 0" (0 mm) |
Sides | 0" (0 mm) |
Back | 0" (0 mm) |
Perpendicular Sidewall | 6" (152 mm) |
20002211 | 5 |