VENTED NATURAL GAS LOGS
INSTALLATION
Continued
INSTALLING DAMPER
CLAMP
Secure the damper stop clamp provided to the leading edge of the damper as shown in Figure 3. If for any reason this clamp doesn't work on your fireplace, another suitable clamp or permanent stop must be installed, or the damper blade must be cut or removed.
Damper Clamp
Damper Damper
Masonry Fireplace | Manufactured |
| Fireplace |
Damper
Clamp
Damper
Figure 3 - Attaching Damper Clamp
CONNECTING TO GAS SUPPLY
WARNING: A qualified ser- vice person must connect log set to gas supply. Follow all local codes.
Installation Items Needed
Before installing log set, make sure you have the items listed below.
• | piping (check local codes) |
• | sealant (resistant to propane/LP gas) |
CAUTION: Use only new, black iron or steel pipe. Inter-
Installation must include an equipment shutoff valve, union, and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from log set (see Figure 4).
IMPORTANT: Install equipment shutoff valve in an accessible location. The equip- ment shutoff valve is for turning on or shutting off the gas to the appliance.
Apply pipe joint sealant lightly to male threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in a clogged burner injector.
CAUTION: Use pipe joint seal- ant that is resistant to liquid pe- troleum (LP) gas.
Install sediment trap in supply line as shown in Figure 4. Locate sediment trap where it is within reach for cleaning. Locate sediment trap where trapped matter is not likely to
Approved Flexible Gas Hose (if allowed by local codes)
CSA
Equipment Shutoff Valve
With 1/8" NPT Tap*
3" Minimum 
freeze. A sediment trap traps moisture and contaminants. This keeps them from going into log set controls. If sediment trap is not installed or is installed wrong, log set may not run properly.
CHECKING GAS
CONNECTIONS
WARNING: Test all gas pip- ing and connections for leaks after installing or servicing. Cor- rect all leaks at once.
WARNING: Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to all joints. Bubbles forming show 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 appliance with its appliance main gas valve (control valve) and equip- ment shutoff valve from gas supply pip- ing system. Pressures in excess of 1/2 psig will damage heater regulator.
2.Cap off open end of gas pipe where equipment shutoff valve was connected.
3.Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter.
4.Check all joints of gas supply piping system. Apply mixture of liquid soap and water to gas joints. Bubbles form- ing show a leak.
5.Correct all leaks at once.
6.Reconnect log set and equipment shutoff valve to gas supply. Check re- connected fittings for leaks.
From Gas Meter (5" W.C.** to 10.5" W.C. Pressure)
• | equipment shutoff valve |
• | test gauge connection |
• adjustable (crescent) wrench or pliers | |
• | sediment trap |
• | tee joint |
• | pipe wrench |
Cap Pipe Nipple Tee Joint
Sediment Trap
Figure 4 - Gas Connection
*Purchase the optional CSA
**Minimum inlet pressure for purpose of input adjustment.
For more information, visit www.desatech.com | 6 | 901910 |
