Wiring The Furnace And Pump; Wiring To The Furnace; Wiring To The Metering Pump - Saturn 125 Operator's Manual

Wiring the Furnace and Pump

WARNING: To avoid electrical shock, make sure that power to the furnace is turned OFF
before connecting any wires. A licensed electrician should install all wiring to your furnace. All wiring
must be in accordance with the National Uniform Electrical Code and local codes. Properly size all wires and
use electrical conduit for all electrical lines.
Wiring your furnace involves the installation of two lines:
(1) A dedicated electrical line to the furnace
(2) A pump electrical circuit from the furnace to the metering pump
Necessary wiring specifications are provided in this section and in the Wiring Schematics located in
Appendix B at the back of the manual.

Wiring to the Furnace

1. Install a dedicated electrical circuit to the electrical junction box on the furnace. Adhere to the
following specifications for wire type:
Model
Model Saturn™ 140
Model Saturn™ 230
2. Wire the furnace according to the Wiring Schematic in Appendix B. Ensure that the ground wire is
attached to the GREEN ground screw in the furnace junction box.
3. Refer to the following chart and check for correct voltage at the furnace.
ATTENTION: Incorrect voltage will severely damage the fan motor/furnace components.
DO NOT operate your furnace on any non-specification power system.
Model
Saturn™ 140
Saturn™ 230
*NOTE: Breaker size with optional equipment is 20 amps. When installing any optional
equipment (e.g. air compressor or draft inducer), you do not need to "upgrade" the breaker size.
The breaker size listed above should be sufficient. Make sure a qualified electrician properly
sizes and installs this electrical circuit. 12-gauge copper wire is required for a 20 amp breaker.
Refer to NFPA-70 for wire size when the distance is over 100 feet.
4. DO NOT turn on main power until instructed to do so.

Wiring to the Metering Pump

WARNING: DO NOT wire the pump directly into your building's electrical system. The pump
must be activated (receive power) from the burner via the pump electrical circuit. DO NOT wire the
pump directly to a wall outlet so that it runs continuously; this will seriously damage your metering pump and/or
furnace and may result in a fire or explosion hazard.
1. Install the pump electrical circuit from the furnace to the metering pump location.
2. Wire the pump circuit according to the Metering Pump Wiring Schematic in Appendix B at the
back of this manual.
Operator's Manual: Models Saturn™ 140 & Saturn™ 230
Wire Specification/Type
12 gauge, 3-wire / copper wire ONLY
12 gauge, 3-wire / copper wire ONLY
Voltage Breaker Size
110/120 20 amps*
110/120 20 amps*
Circuit
Dedicated
Dedicated
4-12
WARNING: DO NOT
tie into an existing circuit,
or electrical overload may occur.
Hertz
60
60