Design Dynamics VTD-18N-JHB Gas Heater User Manual


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114370-01E 7
INSTALLATION
Continued
CONNECTING TO GAS SUPPLY
-

   

WARNING: Never connect

   
    

Installation Items Needed
Before installing log set, make sure you have
the items listed below.
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve*
• test gauge connection*
• adjustable (crescent) wrench or pliers
• sediment trap
• tee joint
• pipe wrench
* A CSA design-certied equipment shutoff
valve with 1/8" NPT tap is an acceptable al-
ternative to test gauge connection. Purchase
the optional CSA design-certied equipment
shutoff valve from your dealer.
CAUTION: Use only new,
     -


     




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 log set (see
Figure 4).
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.
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.
    


We recommend that you install a sediment
trap in supply line as shown in Figure 4.
Locate sediment trap where it is within reach
for cleaning. Install in piping system between
fuel supply and appliance. Locate sediment
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.

    


Figure 4 - Gas Connection
* Purchase the optional CSA design-certied
shutoff valve from your dealer.
** Minimum inlet pressure for purpose of input
adjustment.
Approved Flexible
Gas Hose (If
allowed by local
codes)
CSA Design-Certied
Equipment Shutoff
Valve with 1/8" NPT
Tap*
From Gas
Meter (5" W.C.**
to 10.5" W.C.
Pressure)
3" Min.
Pipe Cap Tee
Nipple Joint
Sediment Trap
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