Lennox International Inc. 11K71 user manual

Summary of the content on the page No. 1

[fT _ _ Technical
_LJ_ Publications
HEAT PUMP KITS
AND ACCESSORIES Litho U.S.A.
@1995 Lennox Industries Inc.
503,214M
REPLACEMENT DEFROST
Dallas, Texas 1/95
CONTROL BOARD
INSTALLATION INSTRUCTIONS FOR REPLACEMENT DEFROST CONTROL BOARD KIT
(11K71) USED WITH HP29, 10HPB, 12HPB SERIES UNITS
Package 1 of I contains:
The unit's defrost system includes two components; a
1- Replacement defrost control board defrost thermostat (see unit installation instructions)
and a defrost control. The following sec

Summary of the content on the page No. 2

REPLACEMENT DEFROST CONTROL BOARD PRESSURE SWITCH SAFETY CIRCUIT CONNECTIONS DIAGNOSTIC LEDs / CONNECTION FOR DEFROST INTERVAL ONE OPTIONAL SWITCH TIMING PINS PS2 PS1 24V TERMINAL STRIP CONNECTIONS FOR TWO OPTIONAL CONNECTIONS SWITCHES SERVICE LIGHT ....... ONNECT,ON [] ps2 ......................... ......................... Psi FIGURE 1 control board. See figure 1. When only one pressure Time-Delay switch is used, wire the switch to the two outside The timed-off delay is five minutes long. The