Superior VD1824NM Installation And Operation Instructions Manual page 15

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 contami-
nants. 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 fi tting with wrench
when connecting it to gas piping and/
or fi ttings.
CHECKING GAS CONNECTIONS
WARNING: Test all gas piping and
connections, internal and external
to unit, for leaks after installing or
servicing. Correct all leaks at once.
WARNING: Never use an open
fl ame to check for a leak. Apply a
noncorrosive leak detection fl uid to
all joints. Bubbles forming show a
leak. Correct all leaks at once.
CAUTION: Make sure external
regulator has been installed between
propane/LP supply and heater. See
guidelines under Connecting to Gas
Supply, Page 13.
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 equip-
ment shutoff valve from gas supply piping
system. Pressures in excess of 1/2 psig
(3.5 kPa) will damage heater regulator.
2. Cap off open end of gas pipe where equip-
ment shutoff valve was connected.
126838-01C
INSTALLATION
Continued
3. Pressurize supply piping system by either
opening propane/LP supply tank valve
for propane/LP gas or opening main gas
valve located on or near gas meter for
natural gas or using compressed air.
4. Check all joints of gas supply piping system.
Apply noncorrosive leak detection fl uid to
all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect heater and equipment shutoff
valve to gas supply. Check reconnected
fi ttings for leaks.
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see
Figure 15).
2. Pressurize supply piping system by either
opening propane/LP supply tank valve
for propane/LP gas or opening main gas
valve located on or near gas meter for
natural gas or using compressed air.
3. Check all joints from gas meter to equipment
shutoff valve for natural gas or propane/
LP supply to equipment shutoff valve for
propane/LP (see Figures 16 and 17). Ap-
ply noncorrosive leak detection fl uid to all
joints. Bubbles forming show a leak.
4. Correct all leaks at once.
Equipment
Shutoff
Valve
Figure 15 - Equipment Shutoff Valve
Propane/LP
Supply Tank
Figure 16 - Checking Gas Joints
SuperiorFireplaces.US.com
Equipment
Shutoff Valve
Gas Control
Valve Location
(Propane/LP Model Shown)
Open
Closed
15