Friedrich V(E, H)A09K25 Electrical Supply, Supply Circuit, Supply Voltage, Control Low Voltage

Electrical Supply

WARNING: Electrical shock hazard.

Turn OFF electric power at fuse box or service panel before making any electrical connections and ensure a proper ground connection is made before connecting line voltage.

All electrical connections and wiring MUST be installed by a qualified electrician and conform to the National Electrical Code and all local codes which have jurisdiction.

Failure to do so can result in property damage, personal injury and/or death.

Supply Circuit

The system cannot be expected to operate correctly unless the system is properly connected (wired) to an adequately sized single branch circuit. Check the installation manual and/or technical data for your particular unit and/or strip heaters to determine if the circuit is adequately sized.

Electrical Rating Tables

NOTE: Use copper conductors ONLY

Wire sizes are per NEC. Check local codes for overseas applications

A through D Suffix

Units Only	250 V Receptacles and Fuse Types
AMPS	15		20 *			30
RECEPTACLE
MANUFACTURER		PART NUMBERS
Hubbell	5661			5461		9330
P & S	5661			5871		5930
GE	GE4069-1			GE4182-1	GE4139-3
Arrow-Hart	5661			5861		5700
TIME-DELAY TYPE
FUSE	15			20		30
(or HACR circuit breaker)

HACR — Heating, Air Conditioning, Refrigeration

* May be used for 15 Amp applications if fused for 15 Amp

Recommended branch circuit wire sizes*

Nameplate maximum circuit	AWG Wire size**
breaker size
15A	14
20A	12
30A	10

AWG — American Wire Gauge * Single circuit from main box

** Based on copper wire, single insulated conductor at 60°C

Supply Voltage

To insure proper operation, supply voltage to the system should be within five (5) percent (plus or minus) of listed rating plate voltage.

Control (Low) Voltage

To insure proper system operation, the transformer secondary output must be maintained at a nominal 24 volts. The control (low) voltage transformer is equipped with multiple primary voltage taps. Connecting the primary, (supply) wire to the tap (i.e., 208 and 240 volts) that most closely matches the MEASURED supply voltage will insure proper transformer secondary output is maintained.

Supply Voltage

Supply voltage to the unit should be a nominal 208/230 volts. It must be between 197 volts and 253 volts. Supply voltage to the unit should be checked WITH THE UNIT IN OPERATION. Voltage readings outside the specified range can be expected to cause operating problems. Their cause MUST be investigated and corrected.

Electrical Ground

GROUNDING OF THE ELECTRICAL SUPPLY TO ALL UNITS IS REQUIRED for safety reasons.

Electrical Requirements

NOTE:	All field wiring must comply with
	NEC and local codes. It is the
	responsibility of the installer to
	insure that the electrical codes are
	met.
Wire Size	Use ONLY wiring size recommended
	for single outlet branch circuit.
Fuse/Circuit	Use ONLY type and size fuse or
	HACR circuit breaker
Breaker	Indicated on unit's rating plate (See
	sample on page 6).
	Proper current protection to the unit
	is the responsibility of the owner.
Grounding	Unit MUST be grounded from branch
	circuit to unit, or through separate
	ground wire provided on permanently
	connected units. Be sure that branch
	circuit or general purpose outlet is
	grounded.
Wire Sizing	Use recommended wire size given in
	the tables below and install a single
	branch circuit. All wiring must comply
	with local and national codes. NOTE:
	Use copper conductors only.

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