INSTALLATION
Continued
We recommend that you install a sediment trap in supply line. Locate 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 heater controls. If sediment trap is not installed or is installed wrong, heater may not run properly.
CAUTION: Avoid damage to regulator. Hold gas regulator with wrench when connecting it to gas piping and/or fittings.
CHECKING GAS
CONNECTIONS
4.Check all joints of gas supply piping system. Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak.
5.Correct all leaks at once.
6.Reconnect heater and equipment shutoff valve to gas supply. Check reconnected fittings for leaks.
Test Pressures Equal To or Less Than 1/2 psi (3.5 kPa)
1.Close equipment shutoff valve (See Figure 19).
2.Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter.
3.Check all joints from gas meter to equipment shutoff valve (See Figure 20). Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak.
4.Correct all leaks at once.
Pressure Testing Heater Gas Connections
1.Open equipment shutoff valve (See Figure 19).
2.Open main gas valve located on or near gas meter.
3.Make sure control knob of heater is in the OFF position.
4.Check all joints from equipment shutoff valve to control valve (See Figure 20). 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 17 through 19). Check all other internal joints for leaks.
7.Turn off heater (See To Turn Off Gas to Appliance on pages 17 through 19).
Input |
| Minimum |
| Maximum |
Rating |
| 22,400 |
| 32,000 |
Type of Gas | LP/Propane | Natural | ||
Manifold |
|
|
| |
Pressure | 10.0"wc | 3.5"wc | ||
*Min. Inlet | 10.5"wc | 4.5"wc | ||
Max. Inlet | 13.0"wc | 10.5"wc | ||
EQUIPMENT | OPEN |
SHUTOFF | |
VALVE | CLOSED |
|
FIGURE 19 - EQUIPMENT SHUTOFF VALVE
*For purpose of input adjustment.
The appliance must be isolated from the gas supply piping system by closing its equipment shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less than ½ psi (3.5 kPa).
Pressure Testing Gas Supply Piping System
Test Pressures In Excess of 1/2 psi (3.5 kPa)
1.Disconnect appliance with its appliance main gas valve (control valve) and equipment shutoff valve from gas supply piping system. Pressures in excess of 1/2 psi 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.
EQUIPMENT
SHUTOFF
VALVE
GAS METER
CONTROL VALVE LOCATION
FIGURE 20 - CHECKING GAS JOINTS
15
