Lochinvar GAS HEATER FOR COMMERICAL POOL APPLICATIONS Terminal Strip Connection Options

Installation and Service Manual

Figure 39 - Control Panel Component Location Drawing

TABLE-M

Remote Wire Connection

Wire	Maximum
Gauge	Allowable Length
12 GA	100 ft
14 GA	75 ft
16 GA	50 ft
18 GA	30 ft

TABLE–N

Terminal Strip Connection Options

The scenarios shown in Figures 40 A - C represent typical terminal strip connection requirements. The terminal strips are located on the left side of the pool heater under the electrical access panel. Other applications may be accommodated, but must be addressed individually.

Figure 40-A shows the position of the jumpers as shipped from the factory for stand-alone operation of the pool heater.

Figure 40-B shows connections to the terminal strip for Remote ON/OFF control of the pool heater. The 1C-1NO jumper must be removed when making these wiring connections. This remote ON/OFF control will provide an Enable/Disable signal to the pool heater and allow the pool heater to operate based on the set point, until the remote ON/OFF signal is cancelled. If the remote ON/OFF control is

also an external pool temperature control, adjust the pool heater’s pool return set point a few degrees higher than the external pool temperature control’s set point. The pool heater temperature control will then act as a backup to the external pool temperature control.

Figure 40-C shows the Continuous and Intermittent terminals. External safety devices connected to these terminals will function to protect the pool heater. Devices connected to the Intermittent terminals (B1 and B2) are monitored only when there is an active Call for Heat. Devices connected to the Continuous terminals (A1 and A2) are monitored continuously and will activate and alarm (if the pool heater is equipped with the alarm option) anytime the safety device senses an abnormal condition. An additional wire may be field installed from these safety devices to terminals A3 or B3 (as appropriate) to activate an audible alarm (if the pool heater is equipped with the alarm option).

A.

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