Leslie E-1500L 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

Page 2
SECTION I
INSTALLATION
• HEATER MAY BE WALL OF FLOOR STAND MOUNTED
— Allow recommended clearances over, under and
around heater shown on Piping Layout Drawing for
maintenance purposes; page 7-8.
WARNING: When connecting heater to other than copper
pipe use dielectric unions, (isolators) to prevent possible
galvanic action.
• CONNECTION OF STEAM TRAP DISCHARGE PIPING
— Trap MUST discharge into an atmospheric or sub-
atmospheric system. Condensate should be free
flowing with no lift. If steam supply pressure is greater
than 5 psig the MAXIMUM elevation of trap discharge
line above Heater is 6 feet. If steam supply pressure
can vary or if maximum efficiency is required, best
results under all operating conditions will be obtained if
trap discharges to atmospheric or sub-atmospheric line
located below level of trap.
• A safety valve must be installed in inlet steam piping if
steam pressure to Heater can exceed 75 psig for
ductile iron exchangers, 150 psig for steel exchangers.
See Piping Installation Drawing No. 90/2.4.1 for details.
An adequate trap system must be provided to insure
that inlet steam piping to Heater is properly drained.
• A pressure gauge must be installed in the inlet steam
piping close to Heater.
• A spring loaded relief valve is incorporated in the
blending valve to relieve excess pressure that can be
caused by thermal expansion of water during a shut-off
or no load condition.
• Install a thermometer in hot water outlet piping close to
Heater.
• OPERATING FEATURES OF LOW PRESSURE
CONSTANTEMP HEATERS — Normally a heat
exchanger having a constant fixed steam supply
pressure and a variable output flow demand allows
water temperature to increase as flow demand
decreased, and decrease as flow demand increases.
This Heater has a unique adjustable gain feature
incorporated in the Heater control system that
automatically compensates in most part for the wide
temperature variations normally encountered when an
uncontrolled steam supply pressure is used.
Compensation is accomplished by reproportioning the
blend ratio of hot and cold water on an automatic
Feedforward basis. The blending valve incorporated a
third window which is normally closed by a seal plate
assembly. In the event that some dirt or foreign material
enters the blending valve preventing its movement, the
yielding spring will allow the diaphragm and stem to
move upward, opening the third window. As seal plate
uncovers third window, it allows cold water to flow into
the blended mix, thus preventing water from becoming
overheated.
STEAM AND WATER OPERATING PRESSURES FOR
MODELS LOW PRESSURE CONSTANTEMP HEATERS
• STEAM PRESSURE — 2 to 15 psig.
• WATER PRESSURE AT COLD WATER INLET OF
HEATER — Maximum water pressure MUST be 5 psig
ABOVE maximum steam pressure used to operate
heater.
SECTION II
START-UP PROCEDURE
1. Turn on cold water supply. With no water flow through
heater, slowly open steam stop valve to heat exchanger
making sure traps are functioning properly to prevent
water hammer.
2. Loosen pipe plug in top of heat exchanger casing and
vent all air from casing before retightening pipe plug.
NOTE: BEFORE making any water temperature or gain
control adjustments, please refer to Capacity and Adjustment
Table (Page 3) and Gain Control Curves Diagram (Page 4) so
that maximum efficiency may be obtained from Heater by
proper use of the information provided by these charts.
3. Loosen set screw in temperature adjustor (14) lock nut
(13) and move lock nut away from cover plate (16) (See
Fig. 1). Check Capacity and Adjustment Table and after
determining Heater capacity shown under your
operating conditions, adjust flow through Heater for
approximately 50% of calculated capacity. Move
temperature adjustor (14) to the right or left until the
desired water temperature is achieved.
4. NOTE: There must be a water flow through Heater in
order to adjust setpoint gain. Operate Heater from
minimum to maximum flow and observe temperature at
both of these extremes. Rotate gain control as shown
on Gain Adjustment Curve Diagram until water
temperature variations are reduced to a minimum.
Move gain adjustor in small increments while adjusting,
as total rotary movement of adjustor is only 30 degrees.
(See Fig. 2)
5. After adjustments are completed, move lock nut (13)
until it is against plate (16) and lock in place with lock
nut set screw.
6. Heater is now adjusted and operating. No other
adjustments should be necessary unless there is a
change in your initial operating conditions. To SHUT
DOWN HEATER close steam stop valve first, followed
by water stop valve.

TO DRAIN UNIT FOR PROLONGED SHUT-DOWN
(Where drainage is necessary)
1. Turn off steam supply and water supply.
2. Open a vent line in high point of system piping.
3. Remove relief valve to drain water from control valve.
4. Open drain connections in steam and condensate lines.
5. Be sure all water is drained from hot water control valve
and system if there is any danger of freezing.
6. When restarting system, tighten all connections and
close all vents. Follow instructions shown in Section II -
Start-up Procedure to put Heater back in operation.
SECTION III
MAINTENANCE OF SYSTEM COMPONENTS
Hot Water Control Valves Dismantling
1. Close all steam and water inlet and outlet stop valves.
Disconnect tubing from valve body and upper
diaphragm case.
2. Disconnect Victaulic coupling (43) and remove gasket
(44). Remove reducing coupling (45) and remove tubing
(30).
3. Loosen and remove casing bolts (5) and nuts (4). Lift off
upper diaphragm case (27).
4. Remove retaining ring (15) from temperature adjustor
(14) followed by lock nut (13) and cover plate (16).
5. Take out retaining ring (12) from adjusting sleeve (33)
and take out temperature adjustor (14) and key cylinder
(10).
6. Hold upper stem (1) fast by placing an open end
wrench on the upper stem flats and remove the jam nut
(23) with another wrench.
7. Take out the shouldered washer (25), O-ring (24),
diaphragm (26), diaphragm plate (29), control valve
spring (3), and the spring guide washer (2) from the
lower diaphragm case (6).
CAUTION: Do not allow valve plug assembly to fall from lower
end of the valve body.
8. Take valve plug assembly from lower opening of valve
body (42).
9. Remove socket head cap screws (7) and take off lower
diaphragm case (6). Take out O-ring (8) from top of yoke
(36).
10. Disconnect Victaulic couplings from valve body (42) and
remove gaskets.
Page 3
Figure 1
E-300L, E-320LDW,
E-600L, E-620LDW,
E-1500L, E-4500L
CAPACITY
AND
ADJUSTMENT
TABLE
(Capacity in GPM)
Numbers in brackets are
approximate Gain Adjustor
settings in degrees.
* Maximum water temperature
setting for E-1500L and E-300L
is 150º
** Steam pressure is measured
at the Heat Exchanger inlet.
INLET E-1500LM E-300L, E-320LDW E-4500L, E-600L, E-620LDW
WATER SET
TEMP POINT **STEAM PRESSURE PSIG **STEAM PRESSURE PSIG
ºF ºF 2 5 10 15 2 5 10 15
120 27(25º) 20(24º) 30(23º) 30(22º) 54(15º) 60(14º) 60(13º) 60(12º)
140 20(30º) 22(30º) 24(30º) 27(30º) 46(36º) 54(25º) 58(25º) 60(20º)
40 150 17(30º) 19(30º) 21(30º) 23(30º) 40(30º) 49(30º) 53(27º) 54(25º)
160 * * * * 34(30º) 41(30º) 44(30º) 46(30º)
180 * * * * 21(30º) 23(30º) 25(30º) 28(30º)
12 30(22º) 30(21º) 30(20º) 30(19º) 60(12º) 60(11º) 60(10º) 60(9º)
140 23(25º) 25(24º) 27(23º) 30(22º) 57(15º) 59(14º) 60(13º) 60(12º)
60 150 20(28º) 22(27º) 24(27º) 27(26º) 49(23º) 54(21º) 57(18º) 60(16º)
160 * * * * 42(30º) 49(28º) 51(25º) 56(20º)
160 * * * * 29(30º) 33(30º) 39(30º) 44(30º)

Page 4
11. Take out cap screws (39) and remove valve body (42).
12. Push temperature adjusting sleeve (33) out of yoke (36).
13. Valve plug assembly should not be disassembled
unless parts replacement is necessary due to wear or
damage. For disassembly, see instructions covering
assembly of valve plug and reverse instruction
procedure.
14. All parts should be cleaned with an approved solvent.
Wipe off with a clean cloth. Do Not Use Abrasives of
any kind. Care should be taken in handling parts so as
not to damage critical surfaces. Replace any badly
worn or damaged surfaces.
NOTE: If a complete dismantling of control valve is necessary,
it is recommended that valve be removed from Heater and
work performed on a work bench.
ACTUATOR ASSEMBLY
IMPORTANT: Lubricate all O-rings with Silicon Grease.
1. Place O-ring (8) in the top of yoke (36). Position and
attach lower diaphragm case (6) to the yoke. (See Fig.
3) Fasten case to the yoke with cap screws 97)
sequentially from each other until tight.
2. Install O-ring (37) in temperature adjusting sleeve (33)
grooves. Insert guide energizer (35) (rubber) and valve
plug guide (34) (Teflon) into groove in bore of adjusting
sleeve (33). Chamfer on guide to face out, ends should
butt against the two Groove-pins. (See Fig. 4 and Fig. 6)
3. Insert temperature adjusting sleeve assembly (33) into
yoke (36) with Teflon guide (34) facing out and hole in
side of sleeve lining up with yoke window.
VALVE PLUG ASSEMBLY
4. Fasten seal plate assembly (21) to valve plug (38) with
screws (17) and lock washers (18).
5. Place a stem collar washer (31), Teflon thrust washer
(32), and a second stem collar washer (31) in this order
over upper stem (1) making sure parts shoulder on step
of upper stem. Insert Spirolox retaining ring (9) into
upper stem (1) groove.
Figure 3
TOP VIEW SHOWING
POSITION OF NOTCHES
TO VALVE BODY,
ALSO TUBING AND
FITTING TO COLD
WATER INLET
Figure 2
GAIN CONTROL
ADJUSTMENT
CURVE DIAGRAM
30
28
20
Figure 4
Valve Plug Guide
Guide Energizer
Chamfer
This Way Groove-pins
on this side
Minimum Flow Maximum
Temperature Desired
Temperature Curve
Too much gain, reduce by turning
Adj. Rod counter clockwise
Too little gain, increase by turning
Adj. Rod clockwise
Minimum
Gain
(vertical) Maximum
Gain
(30º
clockwise)
Adj. Rod
Hole in
Adj. Rod

Page 5
6. Insert upper stem (1) through small hole in valve plug
(38) so that stem collar (31) will rest on the smaller end
of valve plug.
7. Place bearing assembly, which consists of washing (19),
thrust washer (40) and washer (19) over upper stem (1)
into large bore of valve plug (38) so that it rests on
bottom of bore, and follow with spring seat washer (19)
and yield spring (41). Hold upper stem (1) at extreme
upper end of stem with a wrench.
8. Tighten screw (22) making sure that screw shoulders on
lower section of upper stem. Apply a light coating of
Silicon Grease to the surface of the valve plug.
CONTROL VALVE ASSEMBLY
9. Install pressure relief valve (20) in boss on side of body.
Make sure correct valve body (42) is used. Body is
identified by a drilled hole on side of flange on center
line above hot water inlet for E-300L body. E-600L has
no identification hole drilled in flange.
10. Assemble valve body (42) to yoke (36) with cold water
inlet facing in the same direction as window in yoke.
Secure with cap screws (39).
11. Install O-ring (11) in groove of temperature adjustor (14),
and, temporarily for alignment purposes, insert adjustor
through yoke window. Keyway must be vertical and
notch on outer diameter of adjustor, and line up with pin
in temperature adjusting sleeve (33) (See Fig. 5) DO
NOT INSTALL RETAINING RING (12).
12. With valve plug key and temperature adjustor (14) lined
up on approximately the same center line, insert valve
plug assembly into valve body (42) bore. Plug assembly
will move freely into body bore until stem collar hits
Teflon guide in temperature adjusting sleeve (33). Push
plug stem up through guide until plug hits stop in valve
body. If plug does not bottom against valve body stop,
turn temperature adjustor (14) back and forth while
pushing plug upwards until key enters into keyway in
temperature adjustor (14). With plug against stop in
body, the lower end of plug will be approximately 2-
3/16 inches inside the lower face of body.
IMPORTANT: Plug assembly must be held in place during
step 13.
13. Holding valve plug assembly in place, install the control
valve spring (3). Make sure spring seats properly on
yoke (36) spring seat area. Place spring guide washer
(2) over upper stem and seat. Install diaphragm plate
(29), diaphragm (26), O-ring (24), shouldered washer
(25), and jam nut (23) over upper stem. Tighten jam nut
after positioning diaphragm holes over lower diaphragm
case (6) holes.
14. Install upper case (27) and position over diaphragm
holes. Make sure diaphragm lays flat on flange and is
not pinched or twisted. Fasten bolts (5) and nuts (4)
sequentially across from each other until tight.
MAINTENANCE OF SYSTEM COMPONENTS HEAT
EXCHANGER
Check tightness of all casing bolts and nuts after unit has
been in operation for a few hours and again in twenty-four
hours.
DISASSEMBLY
1. Disconnect water piping.
2. Remove all nuts around casing.
3. Remove casing from base plate.
4. Remove manifold nuts and lock rings. Coil manifold and
manifold gaskets.
ASSEMBLY
Clean all parts and replace any damaged parts. Use new
gaskets.
5. Install manifold gaskets between manifold collar and
base plate. Insert coil manifolds into base plate.
6. Place lock rings over manifold ends with locks fitted
into slots. Install manifold nuts and tighten securely.
(A light coating of thread lubricant should be used on
manifold threads before assembly of nuts.)
Figure 5
Groove-pin
notch
Temperature
Adjustor
Keyway
Figure 6
Groove-pin
Key Cylinder
(49)

Page 6
7. Place casing gasket on base plate and follow with
casing. Make sure recesses inside casing line up with
top of manifolds.
8. Install nuts and bolts and tighten evenly to assure a
tight leakproof seal.
9. Reinstall water piping.
10. Vent steam side of heater as described under Section II
- Start-up Procedure.
SECTION IV - TROUBLE SHOOTING GUIDE FOR
LESLIE CONSTANTEMP HEATERS -
TYPES E-1500L, E-300L, E-320LDW, E-4500L,
E-60OL, E-620LDW
IMPORTANT! Study installation drawings and CAREFULLY
read the details concerning installation of your Heater and
Trapping System. Following these recommendations will
insure that you obtain the maximum efficiency from your
CONSTANTEMP HEATER.
TROUBLE SHOOTING GUIDE
Recirculating Systems
1. PROBLEM: EXCESSIVE RISE IN WATER
TEMPERATURE OCCURRING DURING OR AFTER
PROLONGED PERIODS WHEN NO WATER IS BEING
USED FROM HEATER AND A RECIRCULATING
SYSTEM IS PROVIDED.
1. Too much water being recirculated through heater.
Reduce water flow through heater by throttling
recirculation stop valve to allow enough time for water
in piping system to cool and assume new temperature
setting. If piping system is extensive and contains a
large volume of water, readjustment of temperature can
be speeded up by closing steam supply stop valve to
heat exchanger and by then opening faucets etc.;
preferably at end of loop until water temperature drops
a few degrees below heaters’ adjusted water
temperature. Close off recirculation stop valve and open
steam stop valve to heater. With recirculating pump in
operation, open recirculation stop valve in small
increments while allowing adequate time for water to be
recirculated throughout piping before proceeding to
next increment of adjustment. Continue until desired
recirculation water temperature is achieved.
2. IF A THREE-WAY THERMOSTATIC VALVE IS USED, the
port connected to the heaters’ cold water supply MUST
CLOSE to prevent excessive flow of water back to
heater. An excessive flow will cause water temperature
in piping to rise above adjusted temperature setting of
heater. If port does not close, check for dirt or
obstruction between seating surfaces, or for damaged
element or seals.
3. CHECKING FOR FAULTY ELEMENT, immerse unit in an
agitated bath of hot water. With a rise in water
temperature of from 10 to 12ºF above rated operating
range of element, the port connected to heaters’ cold
water supply pipe should be replaced.
CHECK OPERATING RANGE OF ELEMENT MAKING
SURE RANGE IS THAT NEEDED FOR YOUR SYSTEM.
4. NOTE: Operating range of Thermostatic Valve should
normally be from 10 to 15ºF lower than that of Heaters’
adjusted water operating temperature. If heater is
adjusted for 140ºF hot water and a 110ºF 3-way valve is
used, the recirculated water will assume a temperature
of 110ºF during prolonged periods when no water is
being used from heater. If a 180ºf range unit is used
under the same conditions as above, the recirculated
water temperature will rise to 180ºF.
2. PROBLEM: EXCESSIVE DROP IN WATER
TEMPERATURE OCCURRING DURING OR AFTER
PROLONGED PERIODS WHEN NO WATER IS BEING
USED FROM HEATER AND RECIRCULATING SYSTEM
IS PROVIDED.
1. LOW PRESSURE HEATERS: Check for correct inlet
steam pressure to heat exchanger.
2. No water being recirculated back to heater. Check
recirculating system for proper operation of pump,
recirculation valves and controls.
TROUBLE SHOOTING GUIDE
Heat Exchanger and Blending Valve
3. PROBLEM: DROP IN CONTROLLED WATER
TEMPERATURE OCCURRING BEFORE RATED
CAPACITY (GPM) OF YOUR HEATER IS OBTAINED.
1. Check for correct inlet water operating pressure and
steam pressure to heater before and during any
operational test. LOW PRESSURE Heaters - water
pressure MUST be at least 5 psig ABOVE maximum
steam pressure used to operate Heater.
The MAXIMUM water pressure for all Heaters is 150
psig.
NOTE: Seal plate (Part 45) must be tight seating to prevent
cold water from leaking into blended water. This can cause an
uncontrolled drop in blended water adjusted temperature.
2. Check to make sure all steam strainers are clean and
that all traps are functioning efficiently. A flooded or
partly flooded heat exchanger will cause little or no heat
transfer. Excessive back pressure in trap discharge
piping system, or partly clogged piping can restrict flow
of condensate from Heater and cause flooding. Dirty or
partly plugged strainer screens can also cause this
problem.
The above system must be operating efficiently before
any check for fouled coils can be made.

Page 7
3. To check for fouled coils, remove pipe plugs from
blending valve base and cover, and install a gauge in
each connection. Temperature of water from heat
exchanger outlet piping should be approximately 200 to
215ºF when heater is being operated within its rated
capacity. (Temperature may be checked by using a
contact Pyrometer held against a smooth filed section
of exchanger outlet piping.)
LOW PRESSURE HEATERS: Steam pressures of from
2 to 15 psig may be checked by using the CAPACITY
ANÎ ADJUSTMENT TABLE found in your Heater Manual
to determine GPM and water temperature per your
operating conditions.
TEST PROCEDURE: With traps functioning efficiently,
and with flow adjusted for 60% of heater rated capacity
(approx. 5 psig differential across blending valve
diaphragm), the heat exchanger outlet water
temperature drops below 200ºf and continues to drop
as flow is increased to heaters’ rated capacity in GPM,
it indicates that coils are fouled and should be cleaned
or replaced. A coil cleaning Adaptor Kit is available
through your Leslie Representative, along with
instructions for its use. If quality of water being used for
Heater is poor, coils may foul rapidly indicating that
corrective water treatment may be necessary.
4. PROBLEM: INSUFFICIENT STEAM TO HEAT
EXCHANGER.
1. See Paragraphs 1 and 2 above of trouble shooting
guide.
2. LOW PRESSURE HEATER: Check steam reducing
valve operation, if one is used with Heater.
5. PROBLEM: EXCESSIVE STEAM PRESSURE TO HEAT
EXCHANGER.
1. LOW PRESSURE HEATERS: Check steam reducing
valve if one is used or steam source supplying heater.
6. PROBLEM: EXCESSIVE RISE IN WATER
TEMPERATURE ABOVE HEATERS’ SETPOINT
OCCURRING AT LOW FLOWS.
1. The above problem may occur if Heater Controlled
Temperature is overset due to:
a. fouled coils
b. drop in inlet water supply pressure
c. adjustment of controlled water temperature while
exceeding Heaters’ rated capacity in GPM.
See Paragraphs 1 and 2 of the second problem for
further information.
7. PROBLEM: EXCESSIVE DROP IN WATER
TEMPERATURE BELOW HEATERS’ ADJUSTED
SETPOINT OCCURRING DURING LOW FLOW.
1. See Paragraph 1 of Problem 2 above.
2. Inefficient trap operation or increase in trap discharge
drain piping backpressure. See Paragraph 2 of
Problem 3.
3. Too little gain. Readjust gain setting as shown in
Paragraph 2 of Problem 3.
NOTE: A 3ºF change in inlet water temperature to Heater will
produce a change in the Heaters’ adjusted water temperature
of 1ºF.

Page 8
PIPE SIZE
MODEL E F H L
A B C K PSI
E-1500L in 1-1/2 2 1-1/4 3 4-5/8 5-1/4 30 17.5
E-300L mm 38.1 50.8 31.7 76.2 117.5 133.3 HQVAC 444.5
E-320L
E-4500L in 2 2 2 4 5-5/8 5-1/4 TO 17.5
E-600L mm 50.8 50.8 50.8 101.6 142.9 133.3 30 PSI 444.5
E-620L
MODEL P Q R S T U X
E-1500L in 12-1/16 6-11/16 5-23/32 1-1/4 10-1/4 15-13/16 1-3/16
E-300L mm 306.4 169.9 145.3 31.7 260.3 401.6 30.2
E-1520L in 11-1/4 5-7/8 5-3/4 11-11/16 10-1/16 15-13/16 1-3/16
E-320L mm 285.7 149.2 146.0 296.5 255.6 401.6 30.2
E-4500L in 12-1/2 5-5/8 5-3/4 3-7/8 7-7/8 17-13/16 1
E-4520L
E-600L mm 317.5 142.9 146.0 98.4 200 452.4 25.4
E-620L
MODEL J M N
E-1500L
E-300L in 8-3/4 10-3/8 5-3/16
E-1520L
E-320L mm 222.2 263.5 131.8
E-4500L
E-4520L in 9-9/32 10-11/16 5-3/16
E-600L
E-620L mm 235.7 271.5 131.8
J – BOTTOM MTG. FRAME TO BOTTOM SIDE STEAM INLET ON EXCHANGER.
M – BOTTOM MTG. FRAME TO BOTTOM SIDE CONDENSATE OUTLET ON EXCHANGER.
N – BLEND VALVE BODY TO BOTTOM HOT WATER OUTLET
CONSTANTEMP HEATER, MODEL E-1500L, E-1520L, E-300L AND E-320L

Page 9
INSTALLATION CHECK LIST
NOTE 1: PROVIDE ADEQUATE DRIP LEG AND
TRAP TO KEEP STEAM SUPPLY LINE
FREE OF CONDENSATE.
NOTE 2: INSTALL SAFETY VALVE AT THIS
CONNECTION WHEN STEAM SUPPLY
PRESSURE MAY EXCEED 75 PSIG
FOR DUCTILE IRON EXCHANGERS
AND 150 PSIG FOR CAST STEEL
EXCHANGERS.
NOTE 3: INSTALL SMALL TRAP AND STRAINER
TO DRAIN CONDENSATION DURING
NO LOAD OR STANDBY CONDITION.
NOTE 4: INSTALL THERMOMETER SUPPLIED
IN OUTLET HOT WATER LINE.
NOTE 5: INSTALL STOP VALVES ON STEAM
CONDENSATE AND WATER INLET
AND OUTLET LINES.
NOTE 6: SEE TABLE FOR MAX. ELEVATION OF
CONDENSATE DISCHARGE.
APPROXIMATE WEIGHT E-1500L 260 117.8
EXCLUDING STEAM TRAP E-300L 260 117.8
APPROXIMATE WEIGHT STEAM TRAP 27 lb 12.2 kg
HEATER MAY BE SUPPORTED BY FLOOR,
SUSPENSION OR WALL BRACKET TYPE, FLOOR TYPE SHOWN
CONSTANTEMP HEATER, MODEL E-1500L, E-1520L, E-300L AND E-320L
MAXIMUM ELEVATION TABLE
INLET MAX. ELEV.
STEAM PRESSURE COND. DISCHARGE
(PSIG)
2-4 0 ft. 0 cm
5-6 2 ft. 61. cm
7-8 4 ft. 121.9 cm
9-10 6 ft. 182.9 cm
10-12 8 ft. 243.8 cm
12-15 10 ft. 304.0 cm

Page 10
CONSTANTEMP HEATER, MODEL E-1500L, E-1520L, E-300L AND E-320L
MODEL NUMBER AND MATERIALS OF CONSTRUCTION:
MODEL NUMBER
15GPM 30PGM DESCRIPTION
E-1500L E-300L Ductile Iron Shell, Copper Coils
E-1501L E-301L Ductile Iron Shell, Admiralty Coils
E-1502l E-302L Ductile Iron Shell, Cupro-Nickel Coils
E-1520L E-320L Steel Shell, Copper Coils
E-1521L E-321L Steel Shell, Admiralty Coils
E-1522L E-322L Steel Shell, Cupro-Nickel Coils
E-1540L E-340L Steel Shell, Copper Coils, ASME “U” Stamp
E-1541L E-341L Steel Shell, Admiralty Coils, ASME “U” Stamp
E-1542L E-342L Steel Shell, Cupro-Nickel Coils, ASME “U” Stamp
E-1550L E-350L Steel Shell, Copper Coils, ASME “UM” Stamp
E-1551L E-351L Steel Shell, Admiralty Coils, ASME “UM” Stamp
E-1552L E-352L Steel Shell, Cupro-Nickel Coils, ASME “UM” Stamp
REFERENCE NUMBERS FOR PARTS NOT SHOWN ON DRAWING:
PART NAME E-1500L E-300L E-1520L E-320L
✷Copper Coil For Part No. 46** 011854096 011854085 011964202 011854086
✲Manifold Gasket For Part No. 46 72584 72584 72584 72584
✲Casing Gasket For Part No. 46 56685-67 56685-67 57961-67 57961-67
✲Coupling Gasket For Part No.47 56236 56236 56236 56236
✲Coupling Gasket For Part No. 48 56548 56548 56548 56548
Coil Lock Ring (Note 2) 61394 61394 61394 61394
Coil Lock Nut (Note 2) 59409 59409 59409 59409

Page 11
CONSTANTEMP HEATER, MODEL E-1500L, E-1520L, E-300L AND E-320L
E-1500L E-300L
PART PART NAME MATERIAL QTY. PER REF. QTY. PER REF.
NO. UNIT NO. UNIT NO.
1. Upper Stem Stainless Steel 1 66688 1 66688
2. Spring Guide Washer Stainless Steel 1 64632 1 64632
3. Controlling Valve Spring Stainless Steel 1 66696 1 66696
4. Nut Steel 14 26585 14 26585
5. Bolt Steel 14 37797 14 37797
6. Diaphragm Case-Lower Stainless Steel 1 64443 1 64443
7. Socket H.D. Cap Screw Steel 6 39655 6 39655
8. ✲O-Ring Synthetic Rubber 1 64769-94 1 64769-94
9. ✲Spirolox Ring Stainless Steel 1 59025 1 59025
10. Key Cylinder Stainless Steel 1 58998 1 58998
11. ✲O-Ring Synthetic Rubber 1 59052-94 1 59052-94
12. ✲Retaining Ring Stainless Steel 1 59023 1 59023
13. Lock Nut-Complete Brass 1 59001 1 59001
14. ✷Gain Adjustor Stainless Steel 1 58995 1 58995
15. ✲Retaining Ring Copper 1 59024 1 59024
16. Cover Plate Brass 1 59009 1 59009
17. Screw Stainless Steel 2 70929 2 70929
18. Lockwasher Stainless Steel 2 70930 2 70930
19. Spring Seat Washer Stainless Steel 2 59013 2 59013
20. Relief Valve Brass 1 59121 1 59121
21. Seal Plate Assembly Stainless Steel 1 59031 1 59031
22. Screw Bronze 1 59486 1 59486
23. Jam Nut Steel 1 50547 1 50547
24. ✲O-Ring Synthetic Rubber 1 49746-94 1 49746-94
25. Shouldered Washer Stainless Steel 1 64645 1 64645
26. ✲Diaphragm Synthetic Rubber 1 37809-94 1 37809-94
27. Diaphragm Case-Upper Stainless Steel 1 64442 1 64442
28. Male Elbow-Flared Brass 1 64829 1 64829
29. Diaphragm Plate Stainless Steel 1 64641 1 64641
30. Formed Tubing Copper 1 66690 1 66690
31. Stem Collar Washer, Upper Stainless Steel 1 59014 1 59014
32. Thrust Washer Graphite Filled Teflon or 1 59015 1 59015
Stainless Steel
33. ✷Temp. Adjusting Sleeve Compl. Stainless Steel 1 58989 1 58989
34. Guide Graphite Filled Teflon 1 59107 1 59107
35. ✷Guide Energizer Synthetic Rubber 1 59166 1 59166
36. Yoke Cast Bronze 1 66686 1 66686
37. O-Ring Synthetic Rubber 2 59029-94 2 59495-94
38. ✷Valve Plug Complete Note 3 Monel 1 73463 1 73463
39. Cap Screw Steel (Note 1) (Note 1) (Note 1) (Note 1)
40. Needle Bearing Nylon & Stainless Steel 1 68484 1 68484
41. ✷Yielding Spring Stainless Steel 1 59019 1 59019
42. Body Cast Bronze 1 58986 1 58986
43. Coupling Malleable Iron 1-3" 55569 1-3" 55569
44. ✲Gasket Commercial 1 56237 1 56237
45. Reducing Coupler Cast Bronze 1 55483 1 55483
46. Heat Exchanger, E1500L./E300L Ductile Iron/Copper Coil 1 71702 1 68609
46. Heat Exchanger, E1520L/E320L Steel/Copper Coil 1 717022022 1 686092022
47. Coupling Malleable Iron 2-1-1/4" 55568 2-1-1/4" 55568
48. Coupling Malleable Iron 4-1-1/2" 56547 4-1-1/2" 56547
49. Mounting Frame Carbon Steel 1 67761 1 67761
50. U-Bolt With Nuts Steel 1 58654 1 58654
51. 1" F + T Trap Cast Iron 1 72308 1 72308
52. Pressure Gauge Steel Case 1 63092 1 63092
53. 1/2" Steam Trap Cast Iron 1 70653 1 70653
54. Thermometer Stainless Steel 1 60184 1 60184
55. 1" Strainer Cast Iron 1 F000220053W 1 F000220053W
56. 1/2" Strainer Cast Iron 1 F000220051W 1 F000220051W
57. Nipple Brass 1 56639 1 56639
58. Inlet Manifold Cast Bronze 1 58172 1 58172
59. Exchanger Manifold Cast Bronze 2 64905 2 64905
60. Fitting (Male Elbow) Brass 1 64770 1 64770
61. Pigtall Siphon Cast Iron 1 56745 1 56745
62. Stem Thrust Washer, Lower Graphite Filled teflon or 1 59014 1 59014
Stainless Steel
NOTE 1: Requires four (4) R/N 45840 and two (2) R/N 59478.
NOTE 2: Furnished with Heater Coil but may be ordered separately.
NOTE 3: Includes seal plate (#21), screws (#17) and lock washers (#18)
✲Recommended spare parts.
✷These parts should be on hand, plus recommended spare parts, when overhauling equipment.

Page 12
STEAM WATER HEATERS, MODELS E-1500L, E-300L, E-4500L AND E-600L

Page 13
The normal recirculation loop will require a one-inch
thermostatic capsule. The setting of this capsule should be at
least 10º F lower than the intended setpoint of the heater. The
recirculating pump need only handle about 10% of the heater
capacity with enough head to move the water around the
recirculation loop.
START-UP OF THE STANDARD
RECIRCULATION SYSTEM
1. Open balancing valve fully.
2. Start recirculating pump.
NOTE: Balancing valve is normally full open. Valve is throttle
only when recirculation pump is over sized for the heater
(10%).
FOR ALL HEATERS
ITEM QTY REF NO DESCRIPTION
1 1 SEE TABLE 2 3-WAY THERMOSTATIC VALVE
2 1 A74257 1" NPT x 3-1/2 NIPPLE
3 1 A60958 1" NPT 90º ELBOW, 125#
4 2 A60956 1" NPT x 1-1/2" NIPPLE
5 1 A70827 1" NPT GLOBE VALVE
6 1 A70823 1" NPT 90º STREET ELBOW
7 1 A70822 1" MALE NPT TO 3/4" NPT REDUCER
8 1 A70826 3/4" NPT CHECK VALVE
9 1 A70828 3/4" STAINLESS STEEL BRAIDED HOSE
10 1 A74256 3/4" NPT x 3" NIPPLE
11 1 A72763 CONDUIT BODY
12 1 A72765 CONDUIT BODY GASKET
13 1 A72764 CONDUIT BODY COVER
14 1 NB57113164 BRASS TEE 1 x 1x 1/2"
15 1 SEE TABLE 2 THERMAL SWITCH DIMENSIONS (± 0.1")
HEATER STYLE A B C
E-1500 5.3 6.9 0.8
E-300 5.3 6.9 0.8
E-4500 5.3 6.9 0.8
E-600 5.3 6.9 0.8
E-1500L 5.7 6.7 3.1
E-300L 5.7 6.7 3.1
E-4500L 5.7 6.7 3.1
E-600L 5.7 6.7 3.1
E-7500L 5.4 6.4 1.9
E-900L 5.4 6.4 1.9
E-10500L 5.4 6.4 1.9
E-1200L 5.4 6.4 1.9
NOTES:
1. PARTS INDICATED ARE SUPPLIED TO CUSTOMER BAGGED, AND ARE
TO BE PLACED IN LINE, AS SHOWN, WHEN HEATER IS INSTALLED.
2. THERMAL SWITCHES ARE SET AT 10ºF OVER NOMINAL
THERMOSTATIC VALVE SETTING (KIT RATING).
STEAM WATER HEATERS, MODELS E-1500L, E-300L, E-4500L AND E-600L
TABLE 1
TABLE 3
FOR SPECIFIC TEMP RANGES
KIT THERMO-VALVE THERMAL SWITCH
RATING REF. NO REF. NO
95ºF A59809 A74274
110ºF A58935 A74267
120ºF A59295 A74270
130ºF A59259 A74269
140ºF A59593 A74273
150ºF A59518 A74271
160ºF A59543 A74272
170ºF A69881 A74275
180ºF A59201 A74268
TABLE 2

Page 14
RELIEF VALVE SIZING
A relief valve is required when the shell pressure can exceed
75 psig (for ductile iron exchangers). A relief valve is required
for steel exchangers if pressure exceeds 150 psig.
The selection and sizing of the relief valve should be done on
the following basis:
MISCELLANEOUS DATA
TYPICAL INSTALLATION FOR DRENCHING SHOWERS
PRESSURE
GAUGE
STEAM TO HEATER
THREE (3) WAY
THERMOSTATIC
VALVE
(THERMAL
CAPSULE)
BLENDED
WATER
OUT
THERMO-
METER HOT WATER SUPPLY
BY-PASS
NORMALLY CLOSED
COLD WATER
SUPPLY
HOT WATER
RETURN
RECIRCULATING
PUMP
BALANCING VALVE
CHECK
VALVE
THERMO-
METER
CHECK VALVE
CONDENSATE
Steam Water Heaters, Models E-1500L, E-300L, E-4500L, E-600L, and E-620LDW

Page 16
CONSTANTEMP HEATER, Models E-4500L, E-600L, E-900L, E-10500L, and E-1200L

Page 17
MODEL A B C D E F G H J K L M N
E-4500L, E-600L in. 22-1/2 21 3/4 1 -3-7/8 6-7/8 12-1/2 4 5-7/16 17-13/16 31-1/2 1-1/2 2
mm. 571.3 533.4 19.1 25.4 -98.4 174.6 317.5 101.6 138.1 452.4 800.1 38..1 50.8
E-7500L, E-900L in. 24 21-1//2 1-1/4 1-13/16 3-7/8 6-7/8 10-3/4 2-15/16 9 13-15/16 29-7/16 2-1/2 2-1/2
mm. 609.6 546.1 31.8 46 98.4 174.6 273 74.6 228.6 354 747.7 65 65
E-10500L, E-1200L in. 27-13/16 24-5/16 1-3/4 2-13/16 2-3/8 8 15-1/4 5-7/16 7-7/16 19-31/32 34-3/8 2-1/2 2-1/2
mm. 706.4 617.5 44.5 55.6 60.3 203 387.4 138.1 188.9 507.2 873.1 65 65
INSTALLATION CHECK LIST
NOTE 1: PROVIDE ADEQUATE DRIP LEG AND
TRAP TO KEEP STEAM SUPPLY LINE
FREE OF CONDENSATE.
NOTE 2: INSTALL SAFETY VALVE AT THIS
CONNECTION WHEN STEAM SUPPLY
PRESSURE MAY EXCEED 75 PSIG
FOR DUCTILE IRON EXCHANGERS
AND 150 PSIG FOR CAST STEEL
EXCHANGERS.
NOTE 3: INSTALL SMALL TRAP AND STRAINER
TO DRAIN CONDENSATION DURING
NO LOAD OR STANDBY CONDITION.
NOTE 4: INSTALL THERMOMETER SUPPLIED
IN OUTLET HOT WATER LINE.
NOTE 5: INSTALL STOP VALVES ON STEAM
CONDENSATE AND WATER INLET
AND OUTLET LINES.
NOTE 6: SEE TABLE FOR MAX. ELEVATION OF
CONDENSATE DISCHARGE.
NOTE 7: CONDENSATE PIPING MUST BE
ADEQUATE TO PREVENT EXCESSIVE
BACK PRESSURE WHERE EXTRA
ELBOWS OR LONG PIPE RUNS ARE
USED, THE PIPE SIZE SHOULD BE
INCREASED.
NOTE 8: INSTALL RELIEF VALVE IN COLD
WATER SUPPLY LINE WHEN WATER
PRESSURE MAY EXCEED 150 PSIG.
NOTE 9: SCREWED FITTING ON E-4500L, E-
600L FLANGED FITTING ON E-900L,
E-10500L & E-1200L
E-4500L E-7500L E-10500L
E-600L E-900L E-1200L
APPROXIMATE WEIGHT 350 lb. 600 lb. 720 lb.
EXCLUDING STEAM TRAP 158.7 kg. 272.2 kg. 326.6 kg
APPROXIMATE WEIGHT 27 lb. 35 lb. 47 lb.
STEAM TRAP 12.2 kg. 15.9 kg. 21.3 kg.
HEATER MAY BE SUPPORTED BY FLOOR,
SUSPENSION OR WALL BRACKET TYPE, FLOOR TYPE SHOWN
MAXIMUM ELEVATION TABLE
INLET MAX. ELEV.
STEAM PRESSURE COND. DISCHARGE
(PSIG)
2-4 0 ft. 0 cm
5-6 2 ft. 61. cm
7-8 4 ft. 121.9 cm
9-10 6 ft. 182.9 cm
10-12 8 ft. 243.8 cm
12-15 10 ft. 304.0 cm
CONSTANTEMP HEATER, Models E-4500L, E-600L, E-900L, E-10500L, and E-1200L

Page 18
CONSTANTEMP HEATER, Models E-4500L, E-600L, E-900L, E-10500L, and E-1200L
REFERENCE NUMBERS FOR PARTS NOT SHOWN ON DRAWING:
PART NAME E-4500L E-600L E-7500L E-900L E-10500L E-1200L
Copper Coil For Part No. 46** 011854097 011854087 011854098 011854088 011854099 011854089
Manifold Gasket For Part No. 46 72585 72585 72585 72585 72586 72586
Casing Gasket For Part No. 46 56686-67 56686-67 56686-67 56686-67 59551-67 59551-67
Coupling Gasket For Part No.47 58188 58188 58188 58188 — —
Coupling Gasket For Part No. 48 56548 56548 58862 58862 58862 58862
Coil Lock Ring (Note 3) 61395 61395 61395 61395 61396 61396
Coil Lock Nut (Note 3) 59431 59431 59431 59431 60596 60596
MODEL NUMBER AND MATERIALS OF CONSTRUCTION:
MODEL NUMBER
45GPM 60PGM 75GPM 90GPM 105GPM 120GPM DESCRIPTION
E-4500L E-600L E-7500L E-900L E-10500L E-1200L Ductile Iron Shell, Copper Coils
E-4501L E-601L E-7501L E-901L E-10501L E-1201L Ductile Iron Shell, Admiralty Coils
E-4502L E-602L E-7502L E-902L E-10502L E-1202L Ductile Iron Shell, Cupro-Nickel Coils
E-4520L E-620L E-7520L E-920L E-10520L E-1220L Steel Shell, Copper Coils
E-4521L E-621L E-7521L E-921L E-10521L E-1221L Steel Shell, Admiralty Coils
E-4522L E-622L E-7522L E-922L E-10522L E-1222L Steel Shell, Cupro-Nickel Coils
E-4540L E-640L E-7540L E-940L E-10540L E-1240L Steel Shell, Copper Coils, ASME “U” Stamp
E-4541L E-641L E-7541L E-941L E-10541L E-1241L Steel Shell, Admiralty Coils, ASME “U” Stamp
E-4542L E-642L E-7542L E-942L E-10542L E-1242L Steel Shell, Cupro-Nickel Coils, ASME “U” Stamp
E-4550L E-650L E-7550L E-950L E-10550L E-1250L Steel Shell, Copper Coils, ASME “UM” Stamp
E-4551L E-651L E-7551L E-951L E-10551L E-1251L Steel Shell, Admiralty Coils, ASME “UM” Stamp
E-4552L E-652L E-7552L E-952L E-10552L E-1252L Steel Shell, Cupro-Nickel Coils, ASME “UM” Stamp
** Coil kit includes coil, manifold gaskets, casing gasket, lock rings and locknuts.

Page 19
E4500L/E600L E7500L/E900L E10500L/E1200L
PART PART NAME MATERIAL QTY. PER REF QTY. PER REF. QTY. PER REF.
NO. UNIT NO. UNIT NO. UNIT NO.
1. Upper Stem Stainless Steel 1 6668 1 66693 1 66693
2. Spring Guide Washer Stainless Steel 1 64632 1 64632 1 64632
3. Controlling Valve Spring Stainless Steel 1 64747 1 66697 1 66697
4. Nut Steel 14 26585 14 26585 14 26585
5. Bolt Steel 14 37797 14 37797 14 37797
6. Diaphragm Case-Lower Stainless Steel 1 64443 1 64443 1 64443
7. Socket H.D. Cap Screw Steel 6 39655 6 39655 6 39655
8. ✲O-Ring Synthetic Rubber 1 64769-94 1 64769-94 1 64769-94
9. ✲Spirolox Ring Stainless Steel 1 59025 1 59025 1 59025
10. Key Cylinder Stainless Steel 1 58998 1 58998 1 58998
11. ✲O-Ring Synthetic Rubber 1 59052-94 1 51167-94 1 51167-94
12. ✲Retaining Ring Stainless Steel 1 59023 1 59494 1 59494
13. Lock Nut-Complete Brass 1 59001 1 59001 1 59001
14. ✷Gain Adjustor Stainless Steel 1 58995 1 59291 1 59291
15. ✲Retaining Ring Copper 1 59024 1 59024 1 59024
16. Cover Plate Brass 1 59009 1 59314 1 59314
17. Screw Stainless Steel 2 70929 2 24755 2 24755
18. Lockwasher Stainless Steel 2 70930 2 21666 2 21666
19. Spring Seat Washer Stainless Steel 2 59013 2 59013 2 59013
20. Relief Valve Brass 1 59121 1 59121 1 59121
21. Seal Plate Assembly Stainless Steel 1 59031 1 63996 1 63996
22. Screw Bronze 1 59486 1 59486 1 59486
23. Jam Nut Steel 1 50547 1 50547 1 50547
24. ✲O-Ring Synthetic Rubber 1 49746-94 1 49746-94 1 49746-94
25. Shouldered Washer Stainless Steel 1 64645 1 64645 1 64645
26. ✲Diaphragm Synthetic Rubber 1 37809-94 1 37809-94 1 37809-94
27. Diaphragm Case-Upper Stainless Steel 1 64442 1 64442 1 64442
28. Male Elbow-Flared Brass 1 64829 1 64829 1 64829
29. Diaphragm Plate Stainless Steel 1 64641 1 64641 1 64641
30. Formed Tubing Copper 1 66690 1 66695 1 66696
31. Stem Collar Washer, Upper Stainless Steel 1 59014 1 59489 1 59489
32. Thrust Washer Graphite Filled Teflon or 1 59015 1 68484 1 68484
Stainless Steel
33. ✷Temp. Adjusting Sleeve Compl. Stainless Steel 1 58989 1 59288 1 59288
34. Guide Graphite Filled Teflon 1 59107 1 59312 1 59312
35. ✷Guide Energizer Synthetic Rubber 1 59166 1 59166 1 59166
36. Yoke Cast Bronze 1 66686 1 66691 1 66691
37. O-Ring Synthetic Rubber 2 59029-94 2 59495-94 2 59495-94
38. ✷Valve Plug Complete Note 3 Monel 1 73463 1 73460 1 73460
39. Cap Screw Steel (Note 1) (Note 1) (Note 2) (Note 2) (Note 2) (Note 2)
40. Needle Bearing Nylon & Stainless Steel 1 59440 1 68484 1 68484
41. ✷Yielding Spring Stainless Steel 1 59019 1 59299 1 59299
42. Body Cast Bronze 1 58985 1 59294 1 59294
43. Coupling Malleable Iron 1 - 3" 55569 1 - 3-1/2" 59491 1 - 3-1/2" 5949
44. ✲Gasket Commercial 1 56237 1 59492 1 59492
45. Reducing Coupler Cast Bronze 1 55483 1 59285 1 59285
46. Ht. Exchg., E4500L/E7500L/E10500L Ductile Iron/Copper Coil 1 71703 1 71704 1 71705
46. Ht. Exchg., E600L/E900L/E1200L Ductile Iron/Copper Coil 1 68610 1 68611 1 68612
46. Ht. Exchg., E4520L/E7520L/E10500L Steel/Copper Coil 1 717032022 1 717042022 1 717052022
46. Ht. Exchg., E600L/E900L/E1200L Steel/Copper Coil 1 686102022 1 686112022 1 686122022
47. Coupling Malleable Iron 3 - 2" 58187 2 - 2" 58187 — —
48. Coupling Malleable Iron 3 -1-1/2" 56547 4 - 2-1/2" 58860 6 - 2-1/2" 58860
49. Mounting Frame Carbon Steel 1 64948 1 60797 1 59200
50. U-Bolt With Nuts Steel 1 58654 — — — —
51. 1-1/2" F + T Trap Cast Iron 1 72341 1 72341 1 72341
52. Pressure Gauge Steel Case 1 63092 1 63092 1 63092
53. 1/2" Steam Trap Cast Iron 1 70653 1 70653 1 70653
54. Thermometer Stainless Steel 1 60184 1 60184 1 60184
55. 1-1/2" Strainer Cast Iron 1 F000220056W 1 F000220056W 1 F000220056W
56. 1/2" Strainer Cast Iron 1 F000220051W 1 F000220051W 1 F000220056W
57. Actuating Cylinder Stainless Steel — — 1 63993 1 63993
58. Nipple Brass 1 58189 1 59361 1 59361
59. Inlet Manifold Cast Bronze 1 58170 1 60798 1 59287
60. Exchanger Manifold Cast Bronze 2 58169 2 60799 2 59286
61. Fitting (Male Elbow) Brass 1 64770 1 64770 1 64770
62. Pigtall Siphon Cast Iron 1 56745 1 56745 1 56745
63. Stem Thrust Washer, Lower Graphite Filled teflon or 1 59014 1 68484 1 59493
Stainless Steel
NOTE 1: Requires four (4) R/N 45840 and two (2) R/N 59478.
NOTE 2: Furnished with Heater Coil but may be ordered separately.
NOTE 3: Includes seal plate (#21), screws (#17) and lock washers (#18)
✲Recommended spare parts.
✷These parts should be on hand, plus recommended spare parts, when overhauling equipment.
CONSTANTEMP HEATER, Models E-4500L, E-600L, E-900L, E-10500L, and E-1200L