Perform steps in the order given. Failure to comply could result in severe personal injury, death, or substantial property damage. WARNING Save this manual for future reference. Contents HAZARD DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . .2 PLEASE READ BEFORE PROCEEDING . . . . . . . . . . . .3 THE KNIGHT XL -- HOW IT WORKS . . . . . . . . . . . . . . . 4-6 RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 1. DETERMINE BOILER LOCATION Provide

Flow - Models 400 and 501 0 2 4 6 8 10 12 14 16 18 20 0 5 10 15 20 25 30 35 40 45 KBN501 KBN400 Pressure Drop vs Flow (Includes Boiler Secondary Piping) Flow Rate (GPM) Pressure Drop (Feet of Head) Figure 6-6 Pressure Drop vs. Flow - Models 601 thru 801 0 10 20 30 40 50 60 0 10 20 30 40 50 60 70 80 90 KBN801 KBN701 KBN601 Pressure Drop vs Flow (Includes Boiler Secondary Piping) Flow Rate (GPM) Pressure Drop (Feet of Head) Table 6B Sizing Information for Temperature Rise Applications_20°F, 25°F,

This item is available in all modes. -67 to 149°F (-55 to 65°C) BOB. sup j Lj g* occ • Boiler Supply - Current boiler supply water temperature as measured by the boiler supply sensor. This item is available in all modes. 14 to 266°F (-10 to 130°C) BOB. ir r T TAflQ 1 J J OCC D1 E1 F1 • Boiler Target - Boiler target temperature is the temperature the control is currently trying to maintain at the boiler supply sensor +/-1/2 of the differential. This item is available in all modes. —, 14

A large easy to read display provides current system temperatures and operating status (FIG. 1). The control has outputs for a primary pump and a combustion air damper or alarm. Based on the mode of operation selected, the control can operate different combinations of boiler stages and boiler pumps. ADDITIONAL FUNCTIONS INCLUDE: • Installer and Advanced Access Levels • Primary Pump Output • Individual Boiler Pump Outputs (in applicable modes) • Pump Exercising • Pump Purging (primary and b

This is typical of many commercial cast iron and steel tube boilers. The HI MASS setting stages on additional boilers at the slowest rate. Differential An on / off heat source must be operated with a differential to prevent short cycling. With the control, either a fixed or an auto differential may be selected. The boiler differential is divided around the boiler target temperature. The first stage contact closes when the supply water temperature is % of the differential setting below the boil

An external signal is generated by applying a voltage between 0 v (dc) and 10 v (dc) across the out + and Com - terminals (4 and 1) (FIG. 25). Once voltage is applied, the External Input Signal pointer is displayed in the LCD and the control closes the primary pump contact. The control calculates a boiler target supply temperature based on the external input signal and the settings made in the control. The control then fires the boiler(s), if required, to maintain the target supply temperature.

Read all instructions, including this manual and the Knight XL Service Manual, before installing. Perform steps in the order given. Failure to comply could result in severe personal injury, death, or substantial property damage. Save this manual for future reference. Contents HAZARD DEFINITIONS ....................... . . .2 Multiple Vent/Air Terminations ............... . . 31 PLEASE READ BEFORE PROCEEDING ......... . . .3 Vertical Termination - Optional Concentric Vent . . . 32-33 THE

Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. The equipment should be operated and maintained only by personnel who have read this manual and who have a working knowledge and understanding of the equipment. V.__J NOTE These instructions are intended as a guide for the Installing Contractor and as a reference for the Operator, Owner and Serviceman. RETAIN THESE INSTRUCTIONS NEAR THE EQUIPMENT FOR READY REFERENCE The instructions c

Perform steps in the order given. Failure to comply could result in severe personal injury, death, or substantial property damage. WARNING Save this manual for future reference. Contents Contents HAZARD DEFINITIONS .................................................... 2 PLEASE READ BEFORE PROCEEDING ........................ 3 THE SYNC -- HOW IT WORKS...................................... 4-5 RATINGS ........................................................................... 6 1. DETERMINE BOILER

Model Air Intake Vent 81 - 211 3 inches 3 inches 286 4 inches 4 inches Table 3C Air Intake/Vent Piping Sizes Increasing or decreasing combustion air or vent piping is not authorized. NOTICE Minimum / Maximum allowable combustion air and vent piping lengths are as follows: Combustion Air = 12 equivalent feet minimum / 100 equivalent feet maximum Vent = 12 equivalent feet minimum / 100 equivalent feet maximum When determining equivalent combustion air and vent length, add 5 feet for each 90° elbow