Desa VGC24NR Instruction Manual page 14

Installation Items Needed
Before installing heater, make sure you have
the.items.listed.below.
•. external.regulator.(supplied.by.installer)
•. piping.(check.local.codes)
•. sealant.(resistant.to.propane/LP.gas)
•. equipment.shutoff.valve.*
•. test.gauge.connection.*
•. sediment.trap
•. tee.joint
•. pipe.wrench
• approved flexible gas line with gas con-
nector. (if. allowed. by. local. codes). (not.
provided).
* A CSA design-certified equipment shutoff
valve.with.1/8".NPT.tap.is.an.acceptable.al-
ternative.to.test.gauge.connection..Purchase.
the optional CSA design-certified equipment
shutoff. valve. from. your. dealer.. See. Acces-
sories, page 37.
f i r e - p a r t s . c o m
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.1".of.water..If.you.do.not.re-
duce incoming gas pressure, heater regulator
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.
CAUTION: Use only new,
black iron or steel pipe. In-
ternally-tinned copper tubing
may be used in certain areas.
Check your local codes. Use
pipe of 1/2" diameter or greater
to allow proper gas volume to
heater. If pipe is too small, undue
loss of volume will occur.
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.1).
IMPORTANT:.Install.equipment.shutoff.valve.
in. an. accessible. location.. The. equipment.
shutoff.valve.is.for.turning.on.or.shutting.off.
the.gas.to.the.appliance.
1
INSTALLATION
Continued
Check. your. building. codes. for. any. special.
requirements.for.locating.equipment.shutoff.
valve to fireplaces.
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.
sealant that is resistant to liquid
petroleum (LP) gas.
Propane/LP.
Supply.Tank
Figure 13 - External Regulator With Vent
CSA Design-Certified
Equipment.Shutoff.Valve.
With.1/8".NPT.Tap*
Approved.Flexible.
Gas Hose (if
allowed.by.local.
codes)
Gas
Control.
Figure 14 - Gas Connection (Remote-
* Purchase the optional CSA design-certified
equipment.shutoff.valve.from.your.dealer..
See.Accessories, page 37.
**Minimum.inlet.pressure.for.purpose.of.input.
adjustment..
www.desatech.com
WARNING: Use pipe joint
Pointing Down
3".Minimum
. Pipe. Cap. Tee
.Nipple.
Sediment.Trap
Ready Models Only)
External.
Regulator.
with.Vent.
Pointing.
Down
pROpANE/Lp.
From.External.
Regulator
(11".W.C.**.
to.1".W.C..
Pressure)
NATURAL.
From Gas
Meter
(5".W.C.**.
to.10.5".
. Joint
W.C..
Pressure)
119162-01H