Desa VGC24NR Instruction Manual page 15

We. recommend. that. you. install. a. sediment.
trap in supply line as shown in Figure 14, page
1.. Locate. sediment. trap. where. it. is. within.
reach. for. cleaning.. Install. in. piping. system.
between.fuel.supply.and.heater..Locate.sedi-
ment.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, internal and
f i r e - p a r t s . c o m
external to unit, for leaks after
installing or servicing. Correct
all leaks at once.
WARNING: Never use an
open flame to check for a leak.
Apply a noncorrosive leak detec-
tion fluid to all joints. Bubbles
forming show a leak. Correct all
leaks at once.
CAUTION: Make sure exter-
nal regulator has been installed
between propane/LP supply
and heater. See guidelines un-
der 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.
will.damage.heater.regulator.
2.. Cap.off.open.end.of.gas.pipe.where.equip-
ment.shutoff.valve.was.connected.
119162-01H
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.
.. Check.all.joints.of.gas.supply.piping.system..
Apply noncorrosive leak detection fluid 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.
fittings for leaks.
Test Pressures Equal To or Less Than 1/2
PSIG (3.5 kPa)
1.. Close.equipment.shutoff.valve.(see.Fig-
ure.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.equip-
ment. shutoff. valve. for. natural. gas. or.
propane/LP.supply.to.equipment.shutoff.
valve.for.propane/LP.(see.Figure.16.or.
Figure 17, page 16). Apply noncorrosive
leak detection fluid to all joints. Bubbles
forming.show.a.leak..
.. Correct.all.leaks.at.once.
Figure 15 - Equipment Shutoff Valve
Propane/LP.
Supply.Tank
www.desatech.com
Equipment.
Shutoff.
Valve
Figure 16 - Checking Gas Joints
(Propane/LP Only)
Open
Closed
Equipment.
Shutoff.Valve
Control.Valve.
Location
15