Fireplace Installation
Continued
IMPORTANT: Install main gas valve (equip- ment shutoff valve) in an accessible location. The main gas valve is for turning on or shutting off gas to appliance.
To Gas Supply (Natural)
Equipment Shutoff Valve
Check your building codes for any special requirements for locating equipment shutoff valve to fireplaces.
Apply pipe joint sealant lightly to male NPT threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged fireplace valves.
WARNING: Use pipe joint sealant that is resistant to liquid petroleum (LP) gas.
We recommend that you install a sediment trap/drip leg in supply line as shown in Figure 23, page 15. Locate sediment trap/drip leg where it is within reach for cleaning. Install in piping system between fuel supply and fireplace. Locate sediment trap/drip leg where trapped matter is not likely to freeze. A sedi- ment trap traps moisture and contaminants. This keeps them from going into fireplace gas controls. If sediment trap/drip leg is not installed or is installed wrong, fireplace may not run properly.
CONNECTING FIREPLACE TO GAS SUPPLY
Installation Items Needed
•3/4" and a 7/8" open end wrench or adjust- able wrench
•sealant (resistant to propane/LP gas, not provided)
1.Remove lower louver door panel by lifting up until disengaged. Swing forward and out of locating slots at bottom.
2.Route flexible gas line (provided by in- staller) from equipment shutoff valve to fireplace. Route flexible gas supply line through one access hole on each side of fireplace cabinet.
3.Attach flexible gas line from gas supply to the 1/2" flare fitting provided on control valve (see Figure 24).
4.Check all gas connections for leaks (see Checking Gas Connections).
To External 
Regulator (Propane/LP)
Flexible Gas Line
Do NOT Kink
Control Valve
Figure 24 - Connecting Flexible Gas Line
to Millivolt Valve
CHECKING GAS CONNECTIONS
WARNING: Test all gas piping and connections, internal and external to unit, for leaks after installing or servicing. Correct all leaks at once.
WARNING:Neveruseanopen flame to check for a leak. Apply noncorrosive leak detection fluid toalljoints.Bubblesformingshow a leak. Correct all leaks at once.
Pressure Testing Gas Supply Piping System
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
1.Disconnect fireplace and its individual equipment shutoff valve from gas supply piping system. Pressures in excess of 1/2 psig (3.5 kPa) will damage fireplace gas regulator.
2.Cap off open end of gas pipe where equip- ment shutoff valve was connected.
3.Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas fireplace or opening main gas valve located on or near gas meter for natural gas fireplace or using compressed air.
4.Check all joints of gas supply piping sys- tem. Apply noncorrosive leak detection fluid to all joints. Bubbles forming show a leak. Correct all leaks at once.
5.Reconnect fireplace and equipment shutoff valve to gas supply. Check recon- nected fittings for leaks.
16 | www.desatech.com |