VANGUARD
UNVENTED PROPANE/LP GAS LOG HEATER
INSTALLATION
Continued
A.G.A.
Shutoff Valve With 1/8" NPT Tap*
Approved Flexible Gas Hose (if allowed by local codes)
Gas Control
3" Minimum 
From External
Regulator (11"
W.C.** to 14"
W.C. Pressure)
Tee Joint | Sediment |
Pipe Nipple | |
Cap | Trap |
| |
|
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Pressure Testing Heater Gas Connections
1.Open manual shutoff valve (see Fig- ure 15).
2.Open propane supply tank valve.
3.Make sure control knob of heater is in the OFF position.
4.Check all joints from manual shutoff valve to control valve (see Figure 16). Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak.
5.Correct all leaks at once.
6.Light heater (see Operating Heater, pages 14 through 16 ). Check all other internal joints for leaks.
7.Turn off heater (see To Turn Off Gas to Appliance, page 15).
Figure 14 - Gas Connection
*Purchase the optional A.G.A.
**Minimum inlet pressure for purpose of input adjustment.
Open
Manual
Shutoff 
Valve
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.
CAUTION: Make sure exter- nal regulator has been installed between propane supply and heater. See guidelines under Con- necting to Gas Supply, page 11.
Pressure Testing Gas Supply Piping System
Test Pressures In Excess Of 1/2 PSIG
1.Disconnect heater and its individual manual shutoff valve from gas supply piping system. Pressures in excess of 1/2 psig will damage heater regulator.
2.Cap off open end of gas pipe where manual shutoff valve was connected.
3.Pressurize supply piping system by ei- ther using compressed air or opening propane supply tank valve.
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 heater and manual shutoff valve to gas supply. Check reconnected fittings for leaks.
Test Pressures Equal To or Less Than 1/2 PSIG
1.Close manual shutoff valve (see Fig- ure 15).
2.Pressurize supply piping system by ei- ther using compressed air or opening propane supply tank valve.
3.Check all joints from propane supply tank to manual shutoff valve (see Fig- ure 16). Apply mixture of liquid soap and water to gas joints. Bubbles form- ing show a leak.
4.Correct all leaks at once.
| Closed | |
Figure 15 - Manual Shutoff Valve | ||
Propane | Manual Shutoff Valve | |
Supply | ||
| ||
Tank |
| |
| Control Valve | |
| Location | |
Figure 16 - Checking Gas Joints
12 | 104309 |
