Fireplace Installation; Check Gas Type; Gas Pipe Installation; Warning - Vermont Castings 500DVMNSCSB Installation And Operating Instructions Manual

DVM Series Direct Vent Gas Fireplace

CHECK GAS TYPE

Use proper gas type for the fireplace you are installing.
If you have conflicting gas type, do not install fireplace.
See dealer where you purchased the fireplace for proper
fireplace according to your gas type.

GAS PIPE INSTALLATION

WARNING

A qualified installer or service person must connect
appliance to gas supply. Follow all local codes.
INSTALLATION ITEMS NEEDED
Before installing fireplace and burner system, make sure
you have the items listed below.
•
Tee joint
•
Equipment shutoff valve*
•
External regulator (supplied by installer)
•
Piping (check local codes)
•
Sealant (resistant to propane/LP gas)
•
Sediment trap (recommended)
•
approved flexible gas line with gas connector (if
allowed by local codes — not provided)
* A CSA design-certified equipment shutoff valve with
1/8" NPT tap is an acceptable alternative to test gauge
connection. Purchase the CSA design-certified equip-
ment shutoff valve from your dealer.
For propane/LP connections only, the installer must supply
an external regulator. The external regulator will reduce
incoming gas pressure. You must reduce incoming gas
pressure to between 11 and 13 inches of water. If you do
not reduce incoming gas pressure, burner system regula-
tor damage could occur. Install external regulator with the
vent pointing down as shown in Figure 45. Pointing the
vent down protects it from freezing rain or sleet.
Use only new black iron or steel pipe. Internally
tinned copper or copper tubing can be used per
National Fuel Code, Section 2.6.3, providing gas
meets hydrogen sulfide limits, and where permitted
by local codes. Gas piping system must be sized to
provide minimum inlet pressure (listed on data plate)
at the maximum flow rate (BTU/hr). Undue pressure
loss will occur if the pipe is too small.
28
•
Pipe wrench
•
Test gauge connection*

FIREPLACE INSTALLATION

External
Regulator
Figure 45 -
External Regulator with Vent Pointing Down
(Propane/LP Only)
FP1977
For propane/LP units, never connect fireplace
external regulator
directly to the propane/LP supply. This burner
system requires an external regulator (not supplied).
Install the external regulator between the burner
system and propane/LP supply.
WARNING
External regulators may be necessary for natural gas.
One- or two-pound systems will damage this appliance
and may cause fire hazard.
When using copper or flex connectors use only fittings
approved for gas connections. The gas control inlet is
3/8" NPT.
100 gal. (min)
Propane/LP
Supply Tank
Vent Pointing
Down
FP1977
20306747