Table des Matières
Publicité
Les langues disponibles
Les langues disponibles
D.
WIRING
D.1
General
1.
Whenever hazardous materials are present, ensure that
the junction box covers are secure before energizing the
heater. Follow all applicable national and local codes
for hazardous location installation. The XPA heater is
available with a terminal housing. A terminal housing
may be required by national and/or local codes for
hazardous locations.
2.
Use supply wires suitable for 221°F (105°C) for standard
units or 257°F (125°C) for hight ambient units.
3.
The connecting supply wires shall be installed to provide
for permanent wiring and have adequate protection
against mechanical damage.
4.
Use approved conduit and conduit seals as required by
the national and local codes for hazardous locations.
5.
To provide maximum protection, each XPA heater should
be fused individually using HRC fuses.
6.
All heaters come factory prewired ready for direct
connection to power supply leads (see Figure 16,
page 7).
6.1
Connect the power leads to terminals marked L1 and N or
L2.
6.2
Connect the ground wire to the ground connection located
in the heater junction box cover.
7.
Replace junction box cover securely. Do not
over-tighten.
8.
For Cable Only XPA Units, heaters must be installed to an
unisulated grounded metal surface with the mounting
bracket supplied. Please refer to national and/or local
electrical codes for proper grounding installation in
hazardous locations.
E.
START-UP
1.
If the unit contains a junction box ensure the junction box lid is
securely installed onto the terminal housing.
2.
Check to ensure that all plugs, screws, and covers are
securely in place.
3.
Check associated electrical equipment.
4.
Check that all wall mounting bracket connections are
tight.
5.
Turn on supply power.
6.
If the unit is equipped with an adjustable thermostat,
dial the temperature required by twisting the thermostat
knob.
WARNING. To prevent unsafe operation of the heater
do not exceed the maximum allowable ambient
operating temperature of 104°F (40°C).
WARNING
Figure 16 – Wiring diagram for XPA convection heater
WARNING. Whenever hazardous materials are
present, ensure that the terminal housing covers,
plugs, etc,. are secured (but not over-tightened)
WARNING
before energizing the heater.
CAUTION. All circuits must be in the open position
before removing junction or terminal box covers.
CAUTION
CAUTION. Use supply wires suitable for 221°F (105°C)
or 257°F (125°C). Supply wires are to be fused
appropriately size HRC fusing.
CAUTION
WARNING. Use approved conduit and conduit seals
as required by hazardous location standards.
WARNING
CAUTION. Ensure that no power is connected to the
equipment prior to making any connections.
CAUTION
D.2
Wire Guard (optional)
Install wire guard by inserting wire arms into holes on heater fins.
WARNING. To prevent unsafe operation of the heater
do not exceed the maximum allowable ambient
operating temperature of 55°C or 60°C on high
WARNING
ambient units.
,
7 7
Publicité
Chapitres
Table des Matières
Dépannage
