Lochinvar 2072, 502 Water connections continued, Pumped Automatic Bypass, 9_3Way Valve Cover

4 Water connections (continued)

Pumped Automatic Bypass

This is a high efficiency pool heater which requires a special pumped bypass for proper operation. The bypass assembly supplied with the pool heater includes a pump and a 3-way mixing valve. All piping to connect the filter system to the pool heater is made directly to the bypass piping on the pool heater.

Installation & Operation Manual

Note: The actuator handle is not used when the outdoor cover is installed. The handle is attached to the underside of the actuator for storage.

Figure 4-8_3 Way Valve Cover Connection Diagram

Outdoor operation: 3-way valve cover

If the pool heater is to be installed outdoors, the 3-way valve must be protected from the elements. A cover for the 3-way valve is included with the outdoor vent kits for all models (see Table 2F on page 30).

Automatic bypass valve cover installation:

*

FIELD CONNECTIONS

*NOTE: Refer to the numbers located next to the terminals when making wiring connections.

RTO TERMINAL #5

BK TO TERMINAL #6

OTO TERMINAL #7

BL TO TERMINAL #19

LOW VOLTAGE BOARD FACTORY CONNECTIONS

The pump supplied on the pool heater bypass has a sealed motor suitable for outdoor installations. When installing the 3-way automatic bypass valve outdoors, an outdoor valve cover is required. An outdoor valve cover is supplied with an optional outdoor vent kit (see Table-2D, page 25 of this manual).

To install the outdoor valve cover, follow the steps below:

1.Turn off power to the unit.

2.Remove the plastic actuator cover from the 3-way automatic bypass valve by loosening the screw above the conduit fitting (FIG. 4-9).

3.Grasp the cover on the screw side and lift the cover up and away from the valve.

4.Disconnect the wires at the terminal block (if connected).

5.Unscrew the plastic conduit cap from the conduit fitting (FIG. 4-9) and pull the plastic conduit hose and wires from the valve.

6.Feed the plastic conduit hose through the opening of the valve cover end cap (JKD6654) (see FIG. 4-9) and slide the end cap approximately one foot up the conduit.

7.Reconnect the wires to the 3-way valve circuit board as shown in FIG. 4-8.

8.Feed the conduit hose into the conduit fitting and reinstall the conduit cap.

Note: If the wing nut underneath the valve actuator body is loose, retighten.

9.Reinstall the plastic actuator cover and secure with the screw loosened in Step 2.

10.Place the valve cover (JKD6652) over the 3-way automatic bypass valve. Install the end caps (JKD6653 and JKD6654) using the four screws provided in the kit (BLT7901) as shown in FIG. 4-9.

11.Turn the power on to the unit and resume operation.

Figure 4-9_3 Way Valve Cover

END CAP (JKD6654)

VALVE COVER (JKD6652)

PLASTIC

ACTUATOR

COVER

END CAP (JKD6653)

INSTALLED VIEW

EXPLODED VIEW

Manual operation of the 3-way automatic bypass valve actuator

To manually operate the 3-way automatic bypass valve actuator:

1.Power must be removed from the unit.

2.Once power is removed, the de-clutch button located on the side of the valve actuator body can be pressed.

CAUTION Failure to remove power from the actuator prior to attempting

to manually operate the valve can result in irreparable damage to the actuator mechanism.

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