Installation Instructions and Owner’s Manual
Portable Indirect Natural Gas/ Propane Heaters
7
NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
WARNING:
In case of gas supply circuit pres
-
sure test, it is required to close the manual clos
-
ing valve, isolating the heater and gas manifold
from the rest of the system.
HEATER CONFIGURATION
The heater is pre-set by the manufacturer, and the
configuration is shown on the data label applied
on the product. The heater may be configured to
operate with propane gas (L.P.G.) or natural gas.
The manual gas selection valve is used to select
the correct gas supply configuration. Rotating
the manual gas selection valve by 90°degrees
changes from natural gas to propane gas (L.P.G.)
and vice-versa. The manual gas selection valve
is normally locked by a safety device, in order to
prevent accidental tampering. This safety device
must be removed by qualified personnel, strictly
following the instructions provided in this manual.
To rotate the manual gas selection valve knob,
follow the steps below:
1.
Unscrew and remove the two screws (A)
locking the valve fastening and remove the
safety device. See Figure 3.
FIGURE 3
2. Select the type of gas desired by rotating the
knob by 90 degrees.
3. Replace the safety device and fasten with the
screws removed earlier.
If required, check the correct burner gas supply
pressure:
1. Unscrew the screw outlet gas pressure
collection point and connect an appropriate
pressure gauge. See Figure 4.
Gas Pressure
Adjustment Screw
Manual Gas Opening
& Closing Knob
Outlet Gas
Pressure
Collection
Point
Inlet Gas
Pressure
Collection
Point
FIGURE 4
2.
Rotate the gas pressure adjustment screw
until obtaining the value of 3.5” W.C..
3. Remove the pressure gauge and retighten the
outlet gas pressure collection point screw,
making sure there are no gas leaks.
OPERATION
BEFORE SWITCHING HEATER ON
Before any attempt of starting the heater
is made, familiarize yourself with warnings,
specifications and precautions page 2 - 5.
• Check that minimum safety clearances from
combustibles, listed in “CLEARANCES TO
COMBUSTIBLES” on page 3, is achieved in
all directions.
• Make sure that flue gas is adequately ventilated
from the chimney.
•
Attach a duct to the outlet if directed venting
of output clean hot air is desired. Ducting can
be installed with the specific clamp or quick
coupling. Refer to “ACCESSORY CHART” on
page 20 for the correct Duct adapter.
• Check that your electrical supply and any
extension cable can meet the requirements
listed in the specifications table.
