INSTALLATION
Continued
For propane/LP units, the installer must supply an external regulator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11" and 14" of water. If you do not reduce incoming gas pressure, heater control valve damage could occur. Install external regulator with the vent pointing down as shown in Figure 13. Pointing the vent down protects it from freezing rain or sleet.
External
Regulator
Propane/LP
Supply Tank
Vent
Pointing
Down
Figure 13 - External Regulator With Vent | |||
|
| Pointing Down | |
Approved Flexible Gas | Propane/LP - From | ||
Hose (if allowed by | |||
local codes) |
| External Regulator | |
|
|
| (11" W.C.** To 14" |
|
|
| W.C. Pressure) |
|
|
| Natural - From |
To Gas | CSA Design- | Gas Meter (5" | |
W.C.** to | |||
Control | Certified | 10.5" W.C. | |
Valve | Equipment | Pressure) | |
| |||
| Shutoff Valve |
| |
| With 1/8" NPT |
| |
| Tap* | 3" Minimum | |
|
| ||
|
| Tee | Pipe Cap |
|
| Joint | Nipple |
Sediment Trap
Figure 14 - Gas Connection (Remote-
Ready Models Only)
*Purchase the optional CSA
**Minimum inlet pressure for purpose of input
adjustment.
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 heater (see Figure 14).
IMPORTANT: Install equipment shutoff valve in an accessible location within 6 feet of the appli- ance. The equipment shutoff valve is for turning on or shutting off the gas to the appliance.
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 heater valves.
WARNING: Use pipe joint sealant that is resistant to liquid petroleum (LP) gas.
We recommend that you install a sediment trap in supply line as shown in Figure 14. 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 gas control. Hold gas control with wrench when connecting it to gas piping and/or fittings.
CHECKING GAS CONNECTIONS
WARNING: Test all gas piping and connections for leaks after installing or servicing. Correct all leaks at once.
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