Lochinvar CF-CH(E)-i&s-08, 399 Quick Programming Overview, To Turn Off Gas To Appliance, Power Up

Installation and Service Manual

To Turn Off Gas To Appliance

1.Open the front access panel to access control panel.

2.Turn power switch to “OFF” position.

3.Turn the manual gas cock clockwise to the “OFF” position.

WARNING: Should overheating occur or

the gas fail to shut off, turn off the manual gas control valve to the unit.

WARNING: Return water temperatures must not be less than 140°F. If lower return water temperatures are required, follow the instructions for Low Temperature Return Water Systems, page 36.

The temperature control uses a Liquid Crystal Display (LCD) for interactive prompting during programming and display of sensed and assigned values. Programming is accomplished through the use of the three programming buttons.

Quick Programming Overview

Power Up

After turning the power switch to the “ON” position, the LCD screen will come on to the “View” menu. The screen will show the boiler outlet temperature setting (see FIG. 47, page 45).

FIG. 45 Combination Gas Valve

PROGRAMMING TEMPERATURE

CONTROL

Note: The temperature controller is pre-programmed at the factory with test settings. Stages per model may vary. These pre-programmed values are as follows:

Standard Btu/hr Models

399,999 - 500,000		2-Stage (Capable)
650,000 - 990,000		3-Stage (Capable)
1,260,000 - 2,070,000		4-Stage (Capable)
Stage	Set Point	Differential
1	125°F (52°C)	8°F (5°C)
2	120°F (49°C)	8°F (5°C)
3	115°F (46°C)	8°F (5°C)
4	110°F (43°C)	8°F (5°C)

Re-program the set points and differentials to meet your system requirements.

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