Leslie E-900L - User Manual

CONSTANTEMP LOW PRESSURE
STEAM-WATER HEATERS
Models E-1500L, E-1520L, E-300L, E-320L, E-320LDW, E-4500L, E-4520L,
E-600L, E-620L, E-620LDW, E-7500L, E-7520L, E-900L, E-920L,
E-10500L, E-10520L, E-1200L and E-1220L
12501 Telecom Drive, Tampa Florida 33637
90/4.5.1
Rev.1
INSTALLATION, OPERATING,
AND MAINTENANCE INSTRUCTIONS
PARTS LIST
TABLE OF CONTENTS
SECTION I — INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
SECTION II — START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
SECTION III — MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
SECTION IV — TROUBLE SHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-19
ILLUSTRATION INDEX
DRAWING, DIMENSIONS, TYPICAL INSTALLATIONS AND MISCELLANEOUS DATA
Figure 1 - Control Valve Complete . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Figure 2 - Gain Control Adjustment Curve Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Figure 3 - Actuator Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Figure 4 - Valve Plug Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Figure 5 - Temperature Adjustor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Figure 6 - Key Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Drawing - Models E-1500L, E-1520L, E-300L and E-320L . . . . . . . . . . . . . . . . . . . . . . . .8-10
Drawing - Models E-1500L, E-300L, E-4500L, E-600L and E-620LDW . . . . . . . . . . . . . . . .12
Drawing - Typical Installation for Drenching Showers . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Drawing - Models E-4500L, E-600L, E-900L, E-10500L and E-1200L . . . . . . . . . . . . . .15-18

Summary

Installation of Constantemp Heaters

Operating Features of Low Pressure Constantemp Heaters

Explains the heater's adjustable gain feature for automatic temperature compensation based on water flow.

Steam and Water Operating Pressures

Details the maximum steam and water operating pressures allowed for the Constantemp heaters.

Start-Up Procedure for Constantemp Heaters

Maintenance of System Components

Hot Water Control Valves Dismantling

Provides step-by-step instructions for dismantling the hot water control valves for maintenance.

Actuator Assembly Procedures

Control Valve Assembly

Valve Body, Yoke, and Plug Assembly

Spring and Diaphragm Installation

Trouble Shooting Guide for Recirculating Systems

Excessive Temperature Rise in Recirculating Systems

Explains causes and solutions for excessive water temperature rise when no water is used.

Excessive Temperature Drop in Recirculating Systems

Discusses issues causing an excessive drop in water temperature during no-use periods.

Trouble Shooting Guide for Heat Exchanger & Blending Valve

Temperature Drop Before Rated Capacity

Addresses temperature drops occurring before the heater reaches its rated capacity (GPM).

Seal Plate Issue Causing Temperature Drop

Trouble Shooting: Insufficient Steam to Heat Exchanger

Trouble Shooting: Excessive Steam Pressure to Heat Exchanger

Trouble Shooting: Excessive Rise in Water Temperature Above Setpoint

Causes: Fouled Coils, Low Water Pressure, Overtemperature Setting

Trouble Shooting: Excessive Drop in Water Temperature Below Setpoint

Causes: Inefficient Trap Operation, Low Gain

Leslie E-900L Specifications

General

Brand	Leslie
Model	E-900L
Category	Water Heater
Language	English