Fireplace Installation; Check Gas Type; Installing Gas Piping To Fireplace/Burner System Location - Majestic 400DVB Installation Instructions Manual

DVB 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 for your gas type or
conversion kit.
INstAll GAs pIpING to FIReplAce / BuRNeR systeM locAtIoN
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.
•
External regulator
(supplied by installer)
•
Equipment shutoff valve*
•
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 equipment 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 regulator damage could occur. Install external regulator with the vent
pointing down as shown in Figure 39. Pointing the vent down protects it from freezing rain or sleet.
External
Regulator
Figure 39 -
External Regulator with Vent Pointing Down
(Propane/LP Only)
FP1977
external regulator
28
•
Piping (check local codes)
•
Test gauge connection*
•
Tee joint
100 lb. (min)
Propane/LP
Supply Tank
Vent Pointing
Down
When using copper of flex connectors use only fittings
approved for gas connections. The gas control inlet is
3/8" NPT.
FP1977

FIReplAce INstAllAtIoN

For propane/lp units, never connect
fireplace 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.
•
Sealant (resistant to propane/LP gas)
• Sediment trap (recommended)
•
Pipe wrench
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.
54D0701