Envision Peripherals Series installation manual Electrical, General, a Thermostat Wiring

NS SPLIT INSTALLATION MANUAL

Electrical

General

Be sure the available power is the same voltage and phase as that shown on the unit serial plate. Line and low voltage wiring must be done in accordance with local codes or the National Electric Code, whichever is applicable. See unit electri- cal data for fuse or cicuit breaker sizing information.

Electrical Data

	Rated	Voltage	Compressor			HWA	Ext	Total	Min	Max
Model	Voltage	Min/Max				Pump	Loop	Unit	Circ	Fuse/
			MCC	RLA	LRA	FLA	FLA	FLA	Amp	HACR
026	208-230/60/1	197/253	16.0	10.2	52.0	0.4	5.4	16.0	18.6	25
038	208-230/60/1	197/253	26.0	16.6	82.0	0.4	5.4	22.4	26.6	40
049	208-230/60/1	197/253	33.0	21.1	96.0	0.4	5.4	26.9	32.2	50
064	208-230/60/1	197/253	40.0	25.6	118.0	0.4	5.4	31.4	37.8	60
072	208-230/60/1	197/253	42.5	27.2	150.0	0.4	5.4	33.0	39.8	60
Rated Voltage of 208-230/60/1.									Rev.: 02/20/07
HACR circuit breaker in USA only.
Min/Max Voltage of 197/253.
All fuses Class RK-5.

Thermostat Wiring

Figure 12a: Thermostat Wiring

		Thermostat
		Y1	1st Stage Compressor
		Y2
			2nd Stage Compressor
		O	Reversing Valve
Air Handler		L	Fault Signal
C	Common	C	Common
R	24 VAC	R	24 VAC
W		W
G	Fan	G

Air Handler transformer must be at least 75 VA.

Figure 12b: Thermostat Wiring for Dual Fuel Applications

Envision Split			Thermostat		Envision Split
			Y1	1st Stage Compressor
Y1					Y1
			Y2	2nd Stage Compressor
					Y2
Y2
			O	Reversing Valve
					O
O
	Fossil Fuel
P1			L	Fault Signal	P1
	Furnace
					LO
Lo
	C	Common	C	Common
					C
C
	R	24 VAC	R	24 VAC
					R
R
	W
		Auxiliary Heat Relay			Shut
	G	Fan	G		P2
				Auxiliary	Down
			W	Heat Relay

Auxiliary Heat Relay

Note: Field installed DPST dual fuel relay

(Required for dual fuel installation)

= chassis