Connecting To Gas Supply - Desa VN18B, VN18TB Manual De Instalación

INSTALLATION
Continued
MOUNTING HEATER TO FLOOR
Mounting Base Feet to Heater
Note: A 90° elbow is required for mounting
this unit and must be installed BEFORE base
feet to provide proper clearance (see Figure
15, page 12).
1. Lay heater cabinet on its back on a table
with bottom of heater overhanging table
edge.
2. Apply pipe joint sealant lightly to male NPT
threads of elbow. Hold pressure regulator
with a wrench when connecting elbow.
Do not overtighten elbow to regulator.
Regulator body could be damaged.
2. Align holes in base foot with mounting holes
on bottom of cabinet (see Figure 13).
3. Secure base foot to heater using sheet
metal screws.
4. Repeat for other side.
Mounting Base Feet to Floor
1. Remove front cover (see Removing Front
Panel of Heater, page 9).
2. Position heater with base feet in desired
location. Mark holes for drilling. Remove
heater with base.
3. For carpeted floors, make a small cut with
a sharp knife at marked locations prior to
drilling. If mounting base to a wood floor,
drill 1/8" diameter hole, 3/4" deep. (Do not
use anchors in wood floors).
If mounting base to a concrete floor, drill
with 1/4" diameter concrete drill bit, 1
into floor. Insert anchors completely into
holes.
4. Reposition heater with base feet over
holes. Secure base to floor with wood
screws. See Figure 13.
Base Foot
Sheet Metal Screw
Figure 13 - Installing Base Feet
121881-01B

CONNECTING TO GAS SUPPLY

requires a 3/8" NPT (National
Pipe Thread) inlet connection to
the pressure regulator.
WARNING: A qualified service
person must connect heater to gas
supply. Follow all local codes.
gas, never connect heater to
private (non-utility) gas wells.
This gas is commonly known
as wellhead gas.
IMPORTANT: For natural gas, check gas line
pressure before connecting heater to gas line.
Gas line pressure must be no greater than
10.5" of water. If gas line pressure is higher,
heater regulator damage could occur.
gas, never connect heater di-
rectly to the propane/LP supply.
This heater requires an external
regulator (not supplied). Install
the external regulator between the
heater and propane/LP supply.
For propane/LP gas, the installer must supply
an external regulator. The external regulator
/ "
3
8
will reduce incoming gas pressure. You must
reduce incoming gas pressure to between 11"
and 14" of water. If you do not reduce incom-
ing gas pressure, heater regulator damage
could occur. Install the external regulator with
the vent pointing down as shown in Figure
14. Pointing the vent down protects it from
Wood
freezing rain or sleet.
Screw
Propane/LP
Supply Tank
Figure 14 - External Regulator With Vent
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WARNING: This appliance
WARNING: For natural
CAUTION: For propane/LP
Pointing Down
External
Regulator
With Vent
Pointing
Down
11