INSTALLATION
Continued
CAUTION: Avoid damage to regulator. Hold gas regulator with wrench when connecting it to gas piping and/or fittings.
| PROPANE/LP | |
| From External | |
CSA | Regulator | |
(11" W.C. to 14" | ||
Equipment Shutoff Valve | ||
With 1/8" NPT Tap* | W.C. Pressure) | |
NATURAL | ||
Approved | ||
From Gas | ||
Flexible Gas | Meter (5" W.C. | |
Hose (if | to 10.5" W.C. | |
allowed by | Pressure) | |
local codes) |
| |
3" Min |
| |
Cap Pipe Tee | ||
Gas Control | Nipple Joint | |
| ||
Sediment Trap | ||
Figure 16 - Gas Connection
(SVYD18PRA/NRA Series)
*Purchase the optional CSA
**Minimum inlet pressure for purpose of input adjustment.
CHECKING GAS CONNECTIONS
WARNING: Test all gas pip- ing and connections, internal and external to unit, for leaks after installing or servicing. Cor- rect all leaks at once.
CAUTION: Make sure exter- nal regulator has been installed between propane/LP supply and heater.SeeguidelinesunderCon- necting to Gas Supply, page 11.
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 equipment 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 equip- ment shutoff valve was connected.
3.Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve lo- cated on or near gas meter for natural gas, or using compressed air.
4.Check all joints of gas supply piping system. Apply a noncorrosive leak detection fluid 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 PSIG (3.5 kPa)
1.Close equipment shutoff valve (see Figure 17).
2.Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve lo- cated on or near gas meter for natural gas, or using compressed air.
3.Check all joints from gas meter for natural or propane/LP supply to equipment shutoff valve (see Figure 18 or 19, page 14). Apply a non- corrosive leak detection fluid to gas joints. Bubbles forming show a leak.
WARNING: Never use an
4. Correct all leaks at once.
open flame to check for a leak. Apply a noncorrosive leak de- tection fluid to all joints. Bubbles forming show a leak. Correct all leaks at once.
Equipment Shutoff Valve
OpenN
POSIT
Closed
Figure 17 - Equipment Shutoff Valve
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