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2 electrical requirements by voltage, And control types, Heater 1 heater 2 – Reznor RIHVL Unit Installation Manual User Manual

Page 11

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FIGURE 6A - With 120 VAC DIRECT SPARK IGNITION (DSI) SINGLE-STAGE CONTROLS

• Electrical supply: 120 VAC - 60 Hz - 1 Phase.

• Maximum total heater current draw: 0.14 Amps.

• Total heater power consumed: 16.8 VA (16.8W).

• 3-wire field service required.

• Field wiring having a minimum temperature rating of at least 302°F (150°C) shall be used and supply circuit

wiring shall have a minimum size of 16 AWG (1.0mm2).

FIGURE 6B - With 24 VAC DIRECT SPARK IGNITION (DSI) SINGLE-STAGE CONTROLS

• Electrical supply: 24 VAC - 60 Hz or 50 Hz - 1 Phase.

• Maximum total heater current draw: 0.66 Amps.

• Total heater power consumed: 15.9 VA (15.9W).

• 2-wire field service required.

• Field wiring having a minimum temperature rating of at least 302°F (150°C) shall be used and supply circuit

wiring shall have a minimum size of 16 AWG (1.0mm2).

GND

(-)

(+120)

GGS

BK

BK

GGS

VR*

SW*

MV*

W

W

120 VAC DSI HEATER ELECTRICAL SUPPLY AND THERMOSTAT WIRING*

LEGEND

(+120) = 120 VAC Supply Voltage

(-

(-) = Supply Neutral

GND = Earth Ground

MV* = Mechanical Ventilation*

VR* = Ventilation Relay*

SW* = Ventilation Interlock Switch*

(normally opened)

GGS = Green Ground Screw

(inside control box)

W = White Wire – Neutral

BK = Black Wire – 120 VAC call for heat

Thermostat

Heater 1

Heater 2

GND

(+24)

GGS

BL

BL

GGS

VR*

SW*

MV*

24 VAC DSI SINGLE-STAGE HEATER ELECTRICAL SUPPLY AND THERMOSTAT WIRING*

LEGEND

(+24) = 24 VAC Supply Voltage

GND = Earth Ground

MV* = Mechanical Ventilation*

VR* = Ventilation Relay*

SW* = Ventilation Interlock Switch*

(normally opened)

GGS = Green Ground Screw

(inside control box)

BL = Blue Wire – 24 VAC call for heat

Thermostat

Heater 1

Heater 2

7.2 Electrical

Requirements

by Voltage and

Control Types

More specific electrical requirements may vary depending on whether the unit is sin-

gle-stage (115V), single-stage (24V), or two-stage (24V). Select the information that

applies to the unit being installed.
NOTES common to FIGURES 6A, 6B, and 6C (page 12):

* Mechanical ventilation interlock is required when all combustion air is provided

by a mechanical air supply system.

#10 ring terminal is required for ground service conductor (by others) to attach to

green ground screw on heater.

The heater control is extremely polarity sensitive and the heater will cycle on

and off erratically if the electrical supply is not wired correctly. Have a qualified

electrician check that the electrical supply circuit is properly grounded and that the

electrical supply polarity is correct.

All components and wiring illustrated are field-supplied.

P/N 131793R10, Page 11