Desa Unvented (Vent-Free) Gas Compact Classic Hearth Fireplace VMH26NRB Owner's Operation And Installation Manual page 18

We recommend that you install a sediment
trap in supply line as shown in Figure 22. Lo-
cate sediment trap where it is within reach for
cleaning. Install in piping system between fuel
supply and heater. Locate sediment trap where
trapped matter is not likely to freeze. A sediment
trap traps moisture and contaminants. This
keeps them from going into fireplace controls.
If sediment trap is not installed or is installed
wrong, fireplace may not run properly.
CSA Design-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*
Approved
Flexible Gas
Line
3" Minimum
Pipe Nipple Cap Tee Joint
Sediment Trap
Figure 22 - Gas Connection
* Purchase the optional CSA design-certified
equipment shutoff valve from your dealer.
CONNECTING FIREPLACE TO GAS
SUPPLY
Installation Items Needed
• Phillips screwdriver
• sealant (resistant to propane/LP gas, not
provided)
1. Remove screws that attach branch sup-
port to fireplace (see Figure 23). Carefully
lift up branch support and remove from
fireplace (see Figure 23).
NOTICE: Most building codes
do not permit concealed gas
connections. A flexible gas line
is provided to allow accessibility
from the fireplace (see Figure 23).
The flexible gas supply line con-
nection to the equipment shutoff
valve should be accessible.
18
INSTALLATION
Continued
Propane/LP
From External
Regulator (11"
W.C.** to 14" W.C.
Pressure)
NATURAL
From Gas Meter
(5" W.C.** to 10.5"
W.C. Pressure)
www.desatech.com
2. Route flexible gas line, included, from
fireplace control to equipment shutoff
valve through side or rear access holes
in outer casing.
3. Apply pipe joint sealant lightly to male
threads of gas connector attached to
flexible gas line/equipment shutoff valve
(see Figure 24).
CAUTION: Avoid damage to
gas control. Hold gas control
with wrench when connecting it
to gas piping and/or fittings.
4. Check all gas connections for leaks. See
Checking Gas Connections, page 19.
5. Replace branch support back into fireplace.
Feed flexible gas line into fireplace base area
while replacing branch support. Make sure
the entire flexible gas line is in fireplace base
area. Reattach branch support to fireplace
with screws removed in step 1.
Flexible
Gas Line
Figure 23 - Removing Branch Support
From Fireplace
Equipment
To Control
Shutoff Valve
Valve
Flexible Gas Line
from Fireplace Gas
Regulator Provided
With Fireplace
Figure 24 - Attaching Flexible Gas Line
to Equipment Shutoff Valve
Branch Support
PROPANE/LP
To External
Regulator
NATURAL
To Gas Supply
113110-01H