Vermont Casting DVRTSB - Manual (Page 7)

7
Vermont Castings, Majestic Products DVRTSB
10003848
The gas pipeline can be brought in through the side and
back of the fireplace as well as the bottom. Knockouts
are provided on the bottom behind the valve to allow for
the gas pipe installation and testing of any gas connec-
tion. It is most convenient to bring the gas line in from
the right side of the valve as this allows fan installation
or removal without disconnecting the gas line.
The gas line connection can be made with properly
tinned 3/8” copper tubing, 3/8” rigid pipe or an ap-
proved flex connector. Since some municipalities have
additional local codes, it is always best to consult your
local authority and the CSA-B149.1 installation codes.
For USA installations consult the current National Fuel
Gas Code, ANSI Z223.1.
Gas Line Installation
When purging the gas lines, the front
glass must be removed.
Always check for gas leaks with a mild
soap and water solution. Do not use an
open flame for leak testing.
The fireplace valve must not be sub-
jected to any test pressures exceeding
1/2 psi. Isolate or disconnect this or any
other gas appliance control from the gas
line when pressure testing.
Model Fuel Gas Control BTU/h BTU/h
DVRTSB RN Nat Millivolt 30,000 21,000
DVRTSB RP Prop Millivolt 30,000 22,500
Gas Specifications
Max.
Input
Min.
Input
Gas Inlet and Manifold Pressures
Natural LP (Propane)
Inlet Minimum Pressure 5.5” w.c. 11.0” w.c.
Inlet Maximum Pressure 14.0” w.c. 14.0” w.c.
Manifold Pressure 3.5” w.c. 10.0” w.c.
DVRTSB
Certified To
ANSI Z21.88b-1999 / CSA 2.33b-M99
Vented Gas Fireplace Heaters
1/2” Gas Supply
1/2” NPT x 1/2” Flare
Shut-off Valve
3/8” Flex Line
(From Valve)
FP297a
Fig. 5 Typical gas supply installation.
The gas control is equipped with a captured screw type
pressure test point, therefore it is not necessary to
provide a 1/8" test point up stream of the control.
When using copper or flex connector use only ap-
proved fittings. Always provide a union when using
black iron pipe so the gas line can be easily discon-
nected for burner or fan servicing. Refer to the gas
specification for pressure details and ratings.
High Elevations
Input ratings are shown in BTU per hour and are
certified without deration for elevations up to
4,500 feet (1,370m) above sea level.
For elevations above 4,500 feet (1,370m) in USA,
installations must be in accordance with the
current ANSI Z223.1 and/or local codes having
jurisdiction.
In Canada, please consult provincial and/or local
authorities having jurisdiction for installations at
elevations above 4,500 feet (1,370m).