21
Electrical Power Connections
Installations must follow these codes:
• National Electrical Code and any other national,
state, provincial or local codes or regulations hav-
ing jurisdiction.
• Safety wiring must be NEC Class 1.
• Heater must be electrically grounded as required
by the NEC.
• In Canada, CSA C22. 1 C.E.C. Part 1.
The heater is wired for 120 VAC, <12 amps. The volt-
age is indicated on the tie-in leads. Consult the wir-
ing diagram shipped with the heater in the instruction
packet. The remote tank control stat, thermostat, or
electronic heater control (as applicable) may be con
-
nected to the stage selector terminal (See wiring dia
-
gram). 24 VAC is supplied to this connection through
the heater transformer.
DO NOT attach any voltage
to the stage selector terminals.
Before starting the
heater check to ensure proper voltage to the heater
and pump.
Install a separate disconnect means for each load. Use
appropriately sized wire as defined by NEC, CSA and/
or local code. All primary wiring should be 125% of
minimum rating.
If any of the original wire as supplied with the heater
must be replaced, it must be replaced with 105°C wire
or its equivalent.
Field-Connected Controllers
It is strongly recommended that all individually-pow-
ered control modules and the heater should be sup-
plied from the same power source.
Check the Power Source
NOTE:
Field-supplied isolation relays should be
installed when field-connected controllers are
mounted more than 50 equivalent feet (18 Ga)
from heater.
A
WARNING:
Using a multi-meter, check the
following voltages at the terminal block inside
the unit. Make sure proper polarity is followed
and house ground is proven. (See Fig. 17.)
CIRCUIT
BREAKER
WHITE
GROUND
BLACK
GREEN
A B C
Fig. 17: Wiring Connections
Check the power source:
AC = 108 VAC Minimum, 132 VAC MAX
AB = 108 VAC Minimum, 132 VAC MAX
BC = <1 VAC Maximum
If the heater does not have a factory-wired stage con-
troller, it is factory-wired in an on-off configuration with
other stage terminals jumpered.
To field-connect a stage controller, remove factory-in
-
stalled jumpers and wire stage controller as shown in
Fig. 20–23.
Making the Electrical Connections
Refer to Fig. 16–22.
1. Verify that circuit breaker is properly sized by re-
ferring to heater rating plate. A dedicated circuit
breaker should be provided.
2. Turn off all power to the heater. Verify that power
has been turned off by testing with a multi-meter
prior to working with any electrical connections or
components.
Fig. 18: Multi-meter
Summary of Contents for Raypak Delta Limited 399B
Page 39: ...39 Wiring Diagram Models 399B 1259B...
Page 40: ...40 Wiring Diagram Models 1529B 2339B...
Page 51: ...51 DIAGNOSTIC DETAIL 12 J 7 J 6 J 5 J 3 0 2 0 16 S 1 F 2 F 3 F 4 F BLOWER DETAIL...
Page 53: ...53 13 J 8 J 10 J 11 J 4 J 2 J 3 J 6 C 14 J 9 J 1 J CONTROL BOX DETAILS...
Page 57: ...57 ILLUSTRATED PARTS LIST MODELS 989B 2339B 10 J 3 O 5 O...
Page 58: ...58 12 H 6 H 7 H 8 H 2 H 9 H 3 H 5 H 1 H 4 H 1 P HEAT EXCHANGER DETAILS BURNER ASSEMBLY DETAILS...
Page 59: ...59 CONTROL BOX DETAILS 9 J 8 J 23 S 13 J 10 J 3 O 10 J 3 O 5 O FRONT SWITCH DETAILS...
Page 66: ...66...
Page 67: ...67 Raypak Inc 2151 Eastman Avenue Oxnard CA 93030 805 278 5300 Litho in U S A NOTES...
