Checking Gas Connections - Vanguard SVYD18N Owner's Operation And Installation Manual

INSTALLING
Continued
16
Avoid damage to regulator. Hold gas regulator with wrench when
connecting it to gas piping and/or fittings.
From
Gas Meter
(5" W.C.** to
10.5" W.C.
Pressure)
Tee Joint
Pipe
Nipple
Cap
Sediment
Trap
* Purchase the optional A.G.A. design-certified manual shutoff valve from your
dealer. See Accessory, page 30.
** Minimum inlet pressure for purpose of input adjustment.

CHECKING GAS CONNECTIONS

Test all gas piping and connections for leaks after installing or
servicing. Correct all leaks at once.
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
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 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 forming show a leak.
5. Correct all leaks at once.
6. Reconnect heater and manual shutoff valve to gas supply. Check reconnected
fittings for leaks.
CAUTION
WARNING ICON G 001
A.G.A. Design-Certified
Manual Shutoff Valve
With 1/8" NPT Tap*
3" Minimum
Figure 18 - Gas Connection
WARNING
WARNING ICON G 001
WARNING
WARNING ICON G 001
Approved Flexible
Gas Hose (if allowed
by local codes)
Gas
Regulator
104024