Floor Mounting Away From Wall; Connecting To Gas Supply - Mr. Heater MHVFDF10RT Operating Instructions And Owner's Manual

FLOOR MOUNTING AWAY FROM WALL:

Installing Support Feet (See figure 11.)
1. Lay heater onto table on its back with bottom
edge overhanging table edge.
2. Securely attach feet to bottom of heater using 2 –
self-tapping screws each.
Figure 11
Note: Feet should have long end going out the front of
heater, and the edge coinciding with side of heater. If
feet overhang side of the heater, switch leg location.
3. Place heater on non-combustible surface (see
Locating Heater, page 6) before proceeding
with gas connection. If this will be a permanent
location, heater may be locked into position using
anchoring holes in mounting feet.
Note: Use of floor mounting feet will require you to
use a 3/8 NPT street elbow to make gas connection.
DUAL FUEL CAPABILITY
This appliance can be used with propane or natural gas.
The factory has set the heater up for propane operation
by default. If using propane, remove the plug from the
Propane/LP regulator and do not make any further
adjustments. If converting for use with Natural Gas See
"FUEL CONVERSION INSTRUCTIONS" on page 1 1 before
proceeding.
NATURAL GAS
CAUTION: Never connect heater to private (non-utility)
gas well. This gas is commonly known as well-head
gas.
IMPORTANT: Check your gas line pressure before
connecting heater to gas line. Gas line pressure must be
no greater than 10.5 inches of water. If gas line pressure
is higher, heater regulator damage could occur.
PROPANE/LP
CAUTION: Never connect heater directly to the
Propane supply. This heater requires an external
regulator (not supplied). Install the external regulator
between the heater and Propane/LP supply.
The installer must supply an external regulator. The
external regulator will reduce the incoming gas pressure
to between 11 and 14 inches of water. If you do not
reduce incoming gas pressure heater regulator damage
could occur. Install external regulator with the vent
pointing down. Pointing the vent down protects it from
freezing rain or sleet.
Universal Unvented Room Heater

CONNECTING TO GAS SUPPLY

WARNING: A qualified service person must connect heater
to gas supply. Follow all local codes.
WARNING: This appliance requires a 3/8" NPT (National
Pipe Thread) inlet connection to the pressure regulator.
Use of floor mounting feet will require you to use a 3/8
NPT street elbow to make gas connection.
CAUTION: Two gas line installations at the same time are
prohibited. The access plate to the switching means shall
not be opened while the heater is in operation.
CAUTION: Use only new black iron or steel pipe. Internally-
tinned copper tubing may be used in certain areas. Check your
local codes. Use pipe of large enough diameter to allow proper
gas volume to heater. If pipe is too small, undue loss of pressure
will occur.
Installation must include an equipment shutoff valve, union
and plugged 1/8" NPT tap. Locate NPT tap within reach of test
gauge hookup. NPT tap must be upstream from heater (see
figure 12).
*A CSA/AGA certified equipment shutoff valve with 1/8"
NPT tap is an acceptable alternative to test gauge connection.
Purchase the CSA/AGA certified equipment shutoff valve from
your dealer.
IMPORTANT: Install an 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 threads. This will prevent
excess sealant from going into pipe. Excess sealant in pipe could
result in clogged heater fuel train. Sealant will also help reduce
the chance of cross threading.
CAUTION: Use pipe joint sealant that is resistant to Propane/LP
and/or Natural Gas depending on fuel used.
Install sediment trap in supply line as shown in figure 12. Locate
sediment trap where it is within reach for cleaning. A sediment
trap traps moisture and contaminants. This keeps them from
going into heater. If sediment trap is not installed or is installed
improperly, heater may not run correctly.
IMPORTANT: Hold pressure regulator with wrench when
connecting it to gas piping and/or fittings.
Regulated NG Line
(7.5"W.C to 14"WC Pressure)
OR
Regulated LP (Propane) Tank
(11"W.C to 14"WC Pressure)
8
Installation Instructions and Owner's Manual
HEATER CABINET
3/8" NPT Pipe Nipple
Pressure
Regulator
Ground Joint Union
Nipple
Shutoff Valve
Nipple
1/8" NPT Plug Tap
Test Gauge
Tee Joint
Connection
Reducer Bushing
Nipple
to 1/8" NPT
Tee Joint
3" minimum
Nipple
Cap
Figure 12
Sediment
Trap