Electrical Power Draw; Transformer Wiring - Raypak Low NOx Series Installation And Operation Manual

Electrical Power Draw

A CAUTION: Heater must be electrically grounded and
bonded. Bonding lug is provided loose with the heater.
Install bonding lug on lower right or left side of jacket
as necessary for bonding the heater. Mounting hole is
provided on the jacket.
NOTE: Failure to ground the heater electrically could
affect the heater's electronics.
NOTE: See "Time Clock/Fireman's Switch" on page
28 for further instructions if using a time clock/
fireman's switch.
The Electronic Intermittent Ignition Device automatically
lights the pilot and main burners upon a call for heat. The
heater is supplied with a dual-voltage transformer for 120
VAC or 240 VAC input power hookup.
When operating on 120VAC power, units draw 6 amps.
When operating on 240VAC units draw 3 amps.
OPTION LOCATION
LEFT SIDE FIELD WIRING
BONDING LUG
(OPTIONAL
LOCATION)
Figure 31. Heater Wiring Locations

Transformer Wiring

120 VAC Wiring
For 120 VAC input power to the unit, connect the black
wire to the L1 or hot leg of the power supply. Connect the
white wire to the "Ret" or neutral leg of the power supply.
There should be no connection to the red wires for
120 VAC operation. Attach a wire nut to each red wire
independently.
20
SUPPLY
Figure 32. 120 VAC Wire Connection Models
240 VAC Wiring
For 240 VAC input power to the unit, connect the black
wire to the L1 or hot leg of the power supply. Connect the
red wire to the "L2" or second hot leg of the power supply.
There should be no connection to the white wires for
240 VAC operation. Attach a wire nut to each white wire
independently.
CONTROL BOX
WARNING: DO NOT attempt to operate the heater
A
(FACTORY MOUNTED
at 208 VAC.
LOCATION)
SWAY BRACE
BONDING LUG
(STANDARD
LOCATION)
Figure 33. 240 VAC Wire Connection
F10651
The heater must be electrically grounded and bonded in
accordance with local codes, or, in the absence of local
codes, with the latest edition of the National Electrical
Code, ANSI/NFPA 70. (Canada - Canadian Electrical
Code, CSA C22.1, Part 1 and Part 2.)
CAUTION
120 VAC and 240 VAC is applied, damage to the trans-
former and PC board may result. Such damages are not
covered under manufacturer's limited warranty.
NOTE: Input power to the heater (120 or 240 VAC) can be
supplied from the load (pump) side of time clock or directly
from the GFCI power source. It is preferred that full-time
power be supplied to the heater from the GFCI power
source, and that the heater be controlled by the fireman's
switch connection or using a two or three-wire remote. If
using a switched GFCI power source, the heater could display
false service indicators on the display panel if the pump is
turned off.
BLACK
HOT
L1
BLACK BLACK
WHITE
RETURN
or
WHITE WHITE
NEUTRAL
SIDE
GROUND
GREEN
RED
RED
240V LOW NOx HEATER
BLACK
HOT
L1
BLACK
BLACK
RED
SUPPLY
HOT
L2
SIDE
RED
RED
GROUND
GREEN GREEN
WHITE
WHITE
:
If the transformer's primary side is wired for
HEATER
7 WIRES
GREEN
HEATER
7 WIRES