6
FIREROD® Product Guide
Start Up
The following sets forth instructions and requirements relating to the initial startup of the product:
CAUTION –
Before energizing the product, the following items should be checked with the main/line
voltage disconnected. Failure to do so could result in damage to the product, equipment and/or
operator injury when it is energized.
1. Electrical terminations are tight and wiring is per wiring diagram supplied (if applicable).
2. Proper disconnecting means and fusing have been installed.
3. The voltage rating of the product is the same as that being applied.
4. Leg to leg voltage is equal (for 3-phase units).
5. Megohm value of the heater elements are within acceptable limits.
6. Proper temperature controls and safety limiting devices are in place with proper set point(s).
7. The product is properly grounded.
8. For immersion applications:
8.1 The heater is securely installed in tank header and no leaks are visible.
8.2 The immersed section of the heater is completely covered by liquid.
8.3 Check for correct fluid flow and fluid level is being maintained in operation.
PTFE Insulated Lead Wire Specifications (NPC Conductors)
PTFE insulated lead wire maximum temperature = 482°F (250°C)
Product Size Designation
Heater Sheath Nominal
Outer Diameter
3.1 < 9.4 mm
(
1
/
8
-
5
/
16
in.)
9.4 < 12.6 mm
(
3
/
8
and
7
/
16
in.)
12.6 < 15.8 mm
(
1
/
2
and
9
/
16
in.)
≥ 15.8 mm
(≥
5
/
8
in.)
Recognition
UL
®
1815 / CSA
UL
®
1659 / CSA
Max voltage
300 Volts
600 Volts
Strands
7/32
7/30
7/26
19/27
Design description
24 Ga. black PTFE
leads
22 Ga. black PTFE
leads
18 Ga. black PTFE
leads
14 Ga. black PTFE
leads
Max amperage
7.5
10.5
18.0
30.0
Design description
24 Ga. white PTFE
leads
22 Ga. white PTFE
leads
18 Ga. white PTFE
leads
14 Ga. white PTFE
leads
Max amperage
7.5
10.5
18.0
30.0
Design description
24 Ga. red PTFE
leads
22 Ga. red PTFE
leads
18 Ga. red PTFE
leads
14 Ga. red PTFE
leads
Max amperage
7.5
10.5
18.0
30.0
Design description
24 Ga. green PTFE
leads
22 Ga. green PTFE
leads
18 Ga. green PTFE
leads
14 Ga. green PTFE
leads
Max amperage
7.5
10.5
18.0
30.0
5. Platen Applications
Ensure that platen holes have been machined to the proper inside diameter for suitable hole-fit as determined by
the “Maximum Watt Density – Heating Metals” chart in Watlow’s Cartridge Heater Catalog found on www.watlow.
com.
6. Miscellaneous
For immersion applications, ensure the heated sections of the product are extended completely into the fluid
media to maximize heat transfer and heater reliability.
Any product that has been sealed in plastic during shipment should not have the plastic removed until the product
is ready for installation and use.
After installation, ensure that the heating system fully complies with all applicable European New Approach
Directives and may also include the EMC Directive.
