Installation Instructions - Berko CPLAS Installation, Operation & Maintenance Instructions Manual

INSTALLATION INSTRUCTIONS

TO REDUCE THE RISK OF FIRE AND ELECTRIC SHOCK
OR INJURY TO PERSONS, OBSERVE THE FOLLOWING:
1. Before installing this heater, remove and discard shipping
pads located within heater. Check to make sure heater is
not damaged.
2. Serious injury or death could result from electric shock.
Make sure electrical power supply circuit coming to heater
is disconnected at main disconnect or service panel before
installing this heater.
3. Wiring procedures and connections must be in accordance
with the National Electrical Code (NEC) and local codes.
Refer to Wiring Diagram on heater and Figure 7. Make sure
all electrical connections are tight to prevent possible over-
heating. Use Copper Supply Wire Only.
Note: Supply wiring is to enter heater through one of the
pedestal bases. For pedestal bases not used for wire routing,
covers supplied with pedestal kits must be used.
4. Verify the electrical power supply voltage matches the volt-
age rating as printed on the heater nameplate.
CAUTION - Never connect a heater to a voltage greater than
the nameplate voltage as this will damage the heater and
could cause a fire.
5. Do not install the heater against combustible low-density
cellulose fiberboard surfaces, against or below vinyl wall
coverings, or below any materials that may be damaged by
heat such as vinyl or plastic blinds, curtains, etc. This
heater is supplied with pedestals for floor mounting (sup-
plied in separate carton). See instructions supplied with
pedestal kits.
6. Do not install heater below an electrical convenience recep-
tacle (outlet).
7. CAUTION – Heater operates at high temperatures. Keep
electrical cords (including telephone and computer cables),
drapes, and other furnishings away from heater. For effi-
cient and safe operation, we recommend maintaining a min-
imum of 6 inches (152 mm) clearance above and in front of
the heater at all times.
8. To reduce the risk of fire, do not store or use gasoline or
other flammable vapors or liquids in the vicinity of the
heater.
9. Do not install heater upside down or in any position other
than as shown in this manual. Caution label with word
"TOP" must be at the top when heater is installed.
10. Do not recess heater in wall or install heater inside any type
enclosure as this will cause heater to overheat and could
create a hazard.
11. When mounting heater, use care to secure heater
pedestals to building structure and avoid damaging internal
heater components.
12. Do not remove or bypass the safety limit control (thermal
protector) as this could allow heater to become a fire haz-
ard – see heater wiring diagram supplied with heater.
13. The factory installed wires inside wireway are used to con-
nect the built-in controls. Limit the maximum current to no
more than 45 total amps for CPLAM models (35 amps for
CPLAS models). Refer to instructions and current capacity
rating as provided with the accessory.
14. Heaters that are not installed end to end must have end
caps installed to cover exposed ends of heater.
15. All field wiring brought in to heater must be rated mini-
mum 75°C.
16 Do not allow objects to be placed on top of heater as they
may be damaged or create a fire hazard.
17. Before energizing, make sure that heater is completely
assembled with grille, front cover, end caps and any
accessories installed.
Rough-in Wiring
1. Branch circuits for the heaters shall be enclosed in 1" rigid
conduit for CPLAS, or 1- 1/4" rigid conduit for CPLAM
heaters.
2. Run branch circuit of proper voltage and wire size, in rigid
conduit, to location of left or right junction box as indicated
on heater wiring diagram. Wire entry to heater is through
either end pedestal.
Note: When pedestal is not used for wire entry, pedestal base
must be covered with cover plate (supplied with pedestal). See
Figure 3.
3. When installing heaters on existing floors, the threaded end
of the rigid conduit must extend 7/8" to 1" above finished
concrete. Conduit must be threaded a minimum of 3/8".
4. Basic heaters are prewired and can be connected to branch
circuit at either end. Heaters with controls are prewired for
connection to branch circuit at one end only (refer to heater
wiring diagram), however, heater can be wired from opposite
end by running wires through heater wireway.
5. If it is necessary to run wires through the heater wireway,
use Table B to size the field installed wiring.
Table B. Sizing Field Installed Wiring
Copper Maximum no.
wire size of wires
75º C in wireway
No. 12 AWG 9
No. 10 AWG 8
No. 8 AWG 4
Table C. Maximum Length of Heater Run
(CPLAS - 1PH)
Watts/Ft. of Maximum allowable length of heater run (feet)
the heaters 120 Volts
125 33
188 22
250 16
Note: For mix of watt densities, calculate amp draw. Do not
exceed values indicated in step 6 above.
TABLE D. Maximum Length of Heater Run
(CPLAM - 1PH and 3PH)
Watts/Ft. of Maximum Allowable Length of Heater Run (Feet)
the Heaters 208 Volts 208 Volts
1Ø
125 74
188 49
250 37
376 24
500 18
564 16
625 14
750 12
3
Maximum allowable current
Up to 3 4 to 6
Conductors Conductors Conductors
11.5 amps 9.3 amps
17.4 amps 14.0 amps 12.1 amps
24.0 amps 21.0 amps
208 Volts 240 Volts
58 67
38 44
29 33
240 Volts 240 Volts
3Ø 1Ø` 3Ø
- 86 -
- 57 -
- 43 -
- 28 -
- 21 -
27 19 32
24 17 29
20 14 24
7 thru 9
8.1 amps
–
277 Volts
77
51
38
277 Volts
1Ø
99
66
49
33
24
22
19
16