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Dayton Installation, Operation, Maintenance and Parts Manual
Models 1RVT7 and 1RVT8
13
Gas Supply
WARNING
!
Improperly connected gas lines may result in fire,
explosion, poisonous fumes, toxic gases, asphyxiation
and death. Connect gas lines in accordance to
national, state, provincial and local codes.
Chart 2.2 - Manifold Pressure
Type of Required Manifold Minimum Inlet Maximum Inlet
Gas Pressure Pressure Pressure
Pressure Equivalents: 1 in. W.C.P. equals .058 oz./sq. in. equals 2.49 Mbar.
Note: Check manifold pressure at the tap on the ball shutoff valve. Readings will be above atmospheric
pressure during operation.
The gas supply to the infra-red heater must be
connected and tested in accordance with national, state,
provincial and local codes along with the guidelines in
this manual. Refer to the latest edition of the ANSI
Z223.1 (NFPA 54) Standard.
Natural 5.0 in. W.C.P. 6.0 in. W.C.P. 14.0 in. W.C.P.
Liquefied Petroleum 10.0 in. W.C.P. 11.0 in. W.C.P. 14.0 in. W.C.P.
Important! Before connecting the gas supply to the
infra-red heater(s):
• Check for conditions such as drafts or other variables
which might cause excessive movement of the unit
and cause damage to the gas connection. Ensure that
the unit is securely mounted and connect the gas with
an approved connection device suitable for the
environment of use.
• Check that the gas piping and service has the capacity
to handle the load of all heaters being installed, as well
as any other gas appliances being connected to the
supply line.
• Check that the main gas supply line is of proper
diameter to supply the required fuel pressures.
• If utilizing used pipe, verify that its condition is clean
and comparable to a new pipe. Test all gas supply lines
in accordance with local codes.
• Test and confirm that inlet pressures are correct. Refer
to the rating plate for required minimum and
maximum pressures (see Chart 2.2). The gas supply
pipe must be of sufficient size to provide the required
capacity and inlet pressure to the heater (if necessary,
consult the local gas company).
• For test pressures in excess of 1/2 psig (3.5 kPa), the
heater and ball shutoff valve must be disconnected
from the gas supply piping system during any pressure
testing of the system.
• For test pressures equal to or less than 1/2 psig (3.5
kPa), the heater must be isolated from the gas supply
piping system by closing it’s individual manual shutoff
valve during any pressure testing of the gas supply
piping system.