Electrical Wiring - RBI FUTERA XLF Series Installation And Operation Instructions Manual

Table 11 Equivalent length (feet) for typical fi ttings
Pipe
size
o
90 elbow Tee
(branch fl ow)
2" 5.2 10.3
2½" 6.2 12.3
3" 7.7 15.3
4" 10.1 20.2
5" 12.6 25.2
6" 15.2 30.4
Equivalent lengths above are for threaded fi ttings. Multiply values above by
0.75 for fl anged fi ttings.
A ground joint union should be installed between the boiler gas
controls and the supply piping. Each of these items are needed to
ensure long life and ease of servicing. Always use a pipe sealant that
is suitable for use with LP gas.
Always use a wrench on the gas valve body when
making gas connections to it. Never over-tighten the
piping entering the gas valve body or gas valve failure
may result!
When applicable, provisions for vent, bleed and gas relief lines must
be made in accordance with the latest revision of ANSI Z223.1/
NFPA 54. Th e main Dungs gas valve supplied with boiler/water
heater does not require external venting.
Safe lighting and other performance criteria were met with the
gas manifold and control assembly provided on the boiler. All gas
connections MUST be leak tested before putt ing the boiler into
operation.
Never use an open fl ame to test for gas leaks. Always use
an approved leak detection method. Failure to comply
with this warning can cause extensive property damage,
severe personal injury or death!
Whenever the gas supply piping is pressure tested the boiler/water
heater gas controls must be protected. If the test pressure is equal
to, or less than 1/2 psig, 3.5 kPa isolate the boiler/water heater by
closing it's manual shut off valve, see Figure 16, page 22. If the test
pressure is greater than, or equal to 1/2 psig, 3.5 kPa, disconnect the
boiler/water heater and its individual shut-off valve.
F F F Finned copper tube gas boilers & water heaters – Boiler Manual d
Fitting or valve
Gate Gas
valve cock
1.2 3.0
1.4 3.5
1.8 4.5
2.4 6.0
2.9 7.3
3.5 13.4
b b l & h

ELECTRICAL WIRING

Electrical power connections
Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and
dangerous operation!
Verify proper operation aft er servicing.
Failure to comply could result in severe personal injury,
death or substantial property damage.
The electrical connections to this boiler/water
heater must be made in accordance with all
applicable local codes and the latest revision
of the National Electrical Code, ANSI/
NFPA-70. Installation should also conform with CSA
C22.1 Canadian Electrical Code Part I if installed in
Canada.
Install a separate 240 volt circuit breaker for the boiler/water heater . (See
Table 12). A properly rated shut-off switch should be located at the boiler/
water heater. Th e boiler/water heater must be grounded in accordance
with the authority having jurisdiction, or if none, the latest revision of the
National Electrical Code, ANSI/NFPA-70.
Table 12 Futera XLF Electrical Requirements
Futera XLF
Model
2500-4000
* Use separate circuit breaker that is properly sized for pump
and pump contactor.
Line voltage field wiring of any controls or other devices
must conform to the temperature limitation of type TEW or
equivalent at 189 o F, 105
installed outdoors. Th e wire size must be compatible with the total
amp draw of the circuit.
Refer to the wiring diagram supplied with the boiler/water heater for
proper wiring connections and wire size.
B l M l
Required FLA *
Circuit Breaker
(amps)
25
o C. Use appropriate wiring materials for units
17
23