Lochinvar 502 Installation must comply with, Electrical connections, Line voltage connections

Installation & Operation Manual

5 Electrical connections

Pool heater operating control module

The operating control for the appliance is the SMART SYSTEM control module. It is located on the inside of the control panel, behind the front access door. Access to adjust the temperature set point and other user adjustable points is made through the Operator Interface located on the front access door.

The exact temperature set point is based on the system’s requirements. Set the control set point(s) to the desired operating water temperature.

The maximum temperature set point that can be programmed into the control module from the Operator Interface on a pool heater is 105°F (40.5°C). The manual reset high limit control for a pool heater is adjustable up to a fixed maximum setting of 200°F (93°C).

TABLE - 5C

AMP DRAW DATA

Model	Controls	Blower	Pump	Approximate Total
			FLA*	Amps @ 120 VAC
502	3.6	2.7	5.8	12.1
652	5.4	3.4	5.8	14.6
752	5.4	3.4	5.8	14.6
992	7.3	3.2	7.4	17.9
1262	7.3	3.2	7.4	17.9
1442	7.3	6.7	7.4	21.4
1802	7.3	6.7	8.8	22.8
2072	7.3	6.7	8.8	22.8

*With standard factory supplied pump.

￿CAUTION Label all wires prior to disconnection when servicing controls. Wiring errors can cause

improper and dangerous operation.

Installation must comply with:

1.National Electrical Code and any other national, state, provincial, local codes, or regulations.

2.In Canada, CSA C22.1 Canadian Electrical Code Part 1, and any local codes.

Line voltage connections

1.Connect 120 VAC power wiring to the line voltage terminal strip in the junction box, as shown in FIG. 5-2.

2.Provide and install a fused disconnect or service switch (15 AMP recommended) as required by the code (see FIG. 5-2).

3.To activate the unit, wire as shown in FIG. 5-2. If the motor is larger than 1 HP, you must install a contactor.

4.When connecting power to units which are to be cascaded, each unit must be connected to the same ground connection.

UNIT			UNIT PUMP
SUPPLY			SUPPLY
L	N	G	L	N	G
D			D
I			I
S			S
C			C
O			O
N			N
N			N
E			E
C			C
T			T
			UNIT

￿WARNING

NOTICE

ELECTRICAL SHOCK HAZARD – For your safety, turn off electrical power supply before making any electrical connections to avoid possible electric shock hazard. Failure to do so can cause severe personal injury or death.

Wiring must be N.E.C. Class 1.

If original wiring as supplied with the pool heater must be replaced, use only type 105°C wire or equivalent.

Pool heater must be electrically grounded as required by National Electrical Code ANSI/ NFPA 70 – latest edition.

		PUMP
		GROUND
		SPLICE
		CHASSIS
		GROUND
L	N
	120V	UNIT
		PUMP
SUPPLY
		1 HP MAX

Figure 5-2_Line Voltage Field Wiring Connections

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