CHAMPION Heat Recovery User Manual

Installation/Operation Guide with Service Replacement Parts

For machines built from 8.21.09 and above

Eseries High Temperature

Heat Recovery Unit

Model:

HRU

3765 Champion Blvd.,
Winston-Salem, NC 27105
336/661-1556 Fax: [phone]

www.championindustries.com

2674 N. Service Road,
Jordan Station Ontario, Canada L0R 1S0

905/562-4195 Fax: [phone]

Issue Date: 2.18.11

Manual P/N 114819 rev.A

Printed in the USA

For future reference, record your dishwasher information in the box below.

Model Number__________________________ Serial Number_______________________

Voltage________________Hertz_____________ Phase__________________

Champion Service Agent __________________________________ Tel:______________________

Champion Parts Distributor _________________________________ Tel:______________________

ATTENTION:

The dishwasher model no., serial no., volt-

age, Hz and phase are needed to identify

your machine and to answer questions.

Please have this information on-hand

if you call for service assistance.

For all models:

The data plate mounts to one
side of the top-mounted
control cabinet.

National Service Department

In Canada: In the USA:

Toll-free: 800/ 263-5798 Toll-free: 800/ 858-4477
Tel: [phone] Tel: [phone]
Fax: [phone] Fax: [phone]
email: [e-mail] email: [e-mail]

The USGBC and the CaGBC Member Logos are trademarks owned by the U.S. Green Building Council

and The Canadian Green Building Council, respectively, and are used by permission.

The logos signify only that Champion Industries is a

USGBC member and a CaGBC member; USGBC and CaGBC do not review,

certify nor endorse the products or services offered by its members.

COPYRIGHT © 2010 All rights reserved Printed in the USA

Revision History

Revision History

The revision history contains part number changes and instructions not available at the time
of printing. We reserve the right to make any changes without notice and without incurring
any liability by making these changes.

Equipment owners may request a revised manual at no charge, by calling:
1 [phone] in the U.S.A. or by calling 1 [phone] in Canada.

Revision Revised Serial Number Revision
Date Pages Effectivity Description

8.6.10 All Engineered System Release of First Edition

2.18.11 12-13 J11022850 Added blower junction box

14-21 J11022850 Added 2 amp circuit breaker

31 J10022850 Revised schematic for circuit breaker

i

Limited Warranty

LIMITED WARRANTY

Champion Industries Inc. (herein referred to as Champion), 3765 Champion Blvd., Winston-Salem, North Carolina 27105,
and P.O. Box 301, 2674 N. Service Road, Jordan Station, Canada, L0R 1S0, warrants machines, and parts,
as set out below.

Warranty of Machines: Champion warrants all new machines of its manufacture bearing the name

"Champion" and installed within the United States and Canada to be free from defects in material and workman
ship for a period of one (1) year after the date of installation or fteen (15) months after the date of shipment by
Champion, whichever occurs rst. [See below for special provisions relating to glasswashers.] The warranty
registration card must be returned to Champion within ten (10) days after installation. If warranty card is not
returned to Champion within such period, the warranty will expire after one year from the date of shipment.

Champion will not assume any responsibility for extra costs for installation in any area where there are
jurisdictional problems with local trades or unions.

If a defect in workmanship or material is found to exist within the warranty period, Champion, at its election,
will either repair or replace the defective machine or accept return of the machine for full credit; provided;
however, as to glasswashers, Champion's obligation with respect to labor associated with any repairs shall end
(a) 120 days after shipment, or (b) 90 days after installation, whichever occurs rst. In the event that Champion
elects to repair, the labor and work to be performed in connection with the warranty shall be done during regular
working hours by a Champion authorized service technician. Defective parts become the property of Champion.
Use of replacement parts not authorized by Champion will relieve Champion of all further liability in connection
with its warranty. In no event will Champion's warranty obligation exceed Champion's charge for the machine.
The following are not covered by Champion's warranty:

a. Lighting of gas pilots or burners.
b. Cleaning of gas lines.
c. Replacement of fuses or resetting of overload breakers.
d. Adjustment of thermostats.
e. Adjustment of clutches.
f. Opening or closing of utility supply valves or switching of electrical supply current.
g. Cleaning of valves, strainers, screens, nozzles, or spray pipes.
h. Performance of regular maintenance and cleaning as outlined in operator’s guide.
i. Damages resulting from water conditions, accidents, alterations, improper use, abuse,
tampering, improper installation, or failure to follow maintenance and operation procedures.
j. Wear on Pulper cutter blocks, pulse vanes, and auger brush.

Examples of the defects not covered by warranty include, but are not limited to: (1) Damage to the exterior or
interior nish as a result of the above, (2) Use with utility service other than that designated on the rating plate,
(3) Improper connection to utility service, (4) Inadequate or excessive water pressure, (5) Corrosion from
chemicals dispensed in excess of recommended concentrations, (6) Failure of electrical components due to
connection of chemical dispensing equipment installed by others, (7) Leaks or damage resulting from such
leaks caused by the installer, including those at machine table connections or by connection of chemical
dispensing equipment installed by others, (8) Failure to comply with local building codes, (9) Damage
caused by labor dispute.

Warranty of Parts: Champion warrants all new machine parts produced or authorized by Champion to be free

from defects in material and workmanship for a period of 90 days from date of invoice. If any defect in
material and workmanship is found to exist within the warranty period Champion will replace the defective
part without charge.

DISCLAIMER OF WARRANTIES AND LIMITATIONS OF LIABILITY. CHAMPION'S WARRANTY IS ONLY TO THE EX­TENT REFLECTED ABOVE. CHAMPION MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING,
BUT NOT LIMITED, TO ANY WARRANTY OF MERCHANTABILITY, OR FITNESS OF PURPOSE. CHAMPION SHALL
NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES. THE REMEDIES SET OUT ABOVE ARE
THE EXCLUSIVE REMEDIES FOR ANY DEFECTS FOUND TO EXIST IN CHAMPION DISHWASHING MACHINES AND
CHAMPION PARTS, AND ALL OTHER REMEDIES ARE EXCLUDED, INCLUDING ANY LIABILITY FOR INCIDENTALS
OR CONSEQUENTIAL DAMAGES.

Champion does not authorize any other person, including persons who deal in Champion Dishwashing machines
to change this warranty or create any other obligation in connection with Champion Dishwashing Machines.

ii

Table of Contents

Table of Contents

Model HRU: Heat Recovery Unit

Revision History.................................................................................................................... i

Limited Warranty

Model Description

.................................................................................................................. ii

................................................................................................................. iv

Installation .............................................................................................................. 1

Receiving ........................................................................ 1

Mounting ......................................................................... 3

Plumbing Connections ................................................... 5

Setting the PRV's ........................................................... 6

Operation Lights and Exhaust Blowers .......................... 8

Operation .............................................................................................................. 9

Cleaning .............................................................................................................. 10

Service Replacement Parts

................................................................................... 11

One Line Piping Diagram

Operation Logic Diagram

....................................................................................... 29

...................................................................................... 33

Electrical Schematic............................................................................................... 34

Model Description

Model: HRU Heat Recovery Unit

The HRU heats cold water supplied to the dishwasher's built-in heat exchanger which
raises the incoming temperature to approximately 110°F/43°C. The preheated water is
plumbed to the nal rinse water booster which ensures a minimum nal rinse water
temperature of 180°F/82°C to sanitize the clean wares. The HRU signicantly reduces
the energy required to heat water for the nal rinse operations.

Exhaust

Air

HRU

Cold

Water In

Booster

Pre-heated

Water Out

Exhaust

Air

The installation, and initial start-up of your dishwasher must be performed by qualied
electricians, plumbers, and authorized service technicians trained in commercial dishwashers.

Defects and repairs caused by unauthorized installers will not be covered by the dishwasher
warranty.

iv

Installation

Installation

Receiving

NOTE:

The installation of your Heat Recovery Unit (HRU) must be performed by qualified service
personnel. Problems due to improper installation are not covered by the Warranty.

The HRU may have be installed at the factory. Proceed to the operation section of this manual
if your HRU is already attached to the machine.

1. Inspect the HRU for damage due to shipping.

2. Check for any accessories that may have shipped with your dishwasher.

3. Move the HRU near its permanent location.

CAUTION:

Be careful when lifting and moving the HRU to prevent damage to the machine.

NOTE:

The installation of the HRU must comply with local safety and health codes.

4. Compare the installation site utility connections with the dishwasher utility connections and
make sure that they are the same.

5. For new dishwasher installations, install the Dishwasher according to the instructions in the
dishwasher service manual Installation, Operation, and Service Replacement Parts, which
is shipped inside the dishwasher.

WARNING:

Moving Parts may cause INJURY OR DEATH.
USE EXTREME CAUTION WHEN THE CONVEYOR
IS MOVING.

WARNING:

Electrocution or serious injury may result when working on an
energized circuit.

Disconnect power at the main breaker or service disconnect
switch before working on the circuit.

Lock-out and tag the breaker to indicate that work is being
performed on the circuit.

1

Installation

Installation

Receiving

CAUTION:

Metal edges in the HRU may be sharp. Use appropriate caution when

!

NOTE:

The installation of the HRU must comply with local safety and health codes.

1. The HRU weighs approximately 175 lbs./79.4 Kg and mounts on the top of the unload end
of the dishwasher.

2. The unload exhaust vent of the dishwasher connects to the inlet of the HRU vent and is sealed
with gasket material which has already been installed on the dishwasher.

3. The HRU is attached to the dishwasher by inserting fasteners from inside the dishwasher
into weldnuts mounted in the HRU. Mounting hardware is included in the installation kit.

working on and in the vicinity of metal components

Exhaust

Air

HRU

Cold

Water In

Booster

Heat Recovery Unit (HRU) shown installed on a right-to-left dishwasher

without a Blower Dryer Option

Pre-heated

Water Out

Exhaust

Air

2

Installation

Dishwasher Direction of Travel

Installation

Mounting

NOTE:

The HRU may have been mounted at the factory so the procedures
described below may not be required.

1. Install the HRU after the dishwasher is completely assembled.

2. Lift the unit with a forklift or a minimum of four persons capable

of positioning and lowering the HRU into its nal position.

3. Make sure the HRU vent inlet (A) is centered on the dishwasher.

4. Install the mounting hardware installed in the installation kit from the
inside of the dishwasher hood to secure the HRU to the machine

5. The mounting hardware (B) includes: (7) Hex hd. bolts 1/4-20 x 5/8",
(7) 1/4" split lock washers, and (7) 1/4" at washers.

C

B

B

L

B

A

B

B

HRU

Top View of the dishwasher unload section.

(HRU shown in gray)

B

B

6. Electrical power is prewired from the heat recovery control box to
the dishwasher main control cabinet to operate the HRU.

3

Blank Page

This Page

Intentionally

Left Blank

4

Installation

Installation

Plumbing Connections

Refer to the photograph below and follow the instructions to connect the
water lines to the HRU.

1. Connect compression ttings from the cold water supply line located
at the base of the dishwasher booster heater to the HRU.

2. Connect compression ttings from the HRU return line at the rear
of the HRU to the booster inlet located at the base of the machine.

3. Connect the red drain hose from the base of the HRU to the
tting on the rear drain line of the dishwasher. The tting is located
directly below the HRU drain line.

HRU WATER

OUT

COLD WATER

IN

HRU DRAIN

OUT

Heat Recovery Unit (HRU) water and drain lines are connected at the rear of the dishwasher.

5

Installation

Installation

Setting the Booster Pressure Reducing Valves (PRV's)

Refer to the illustrations on the next two pages for the location of the water valves and the Green
indicator lights.

1. Ensure that all utility connections are complete.

2. Remove the lower front panel of the unload section.

3. Remove the coil assembly (A) from the multi-rinse valve.

CAUTION:
to prevent damage to the valve coil, energize the multi-rinse valve for as short a
period as needed to make necessary PRV adjustments.

Immediately reinstall the coil assembly when PRV adjustments have been completed.

4. Turn on main water supplies to the dishwasher. Make sure steam supply is OFF.

5. Close all of the drain valves.

6. Remove the main control cabinet cover and set the Auto/Manual switch to the Manual position.

7. Turn ON main breaker power to dishwasher.

8. Turn OFF main breaker power to the booster and optional blower dryer (if equipped).

9. Turn dishwasher main power switch ON.

10. Allow dishwasher tanks to completely ll with water.

11. When dishwasher tanks are full, turn dishwasher main power switch OFF.

12. Turn the Auxiliary wash tank drain handle open and drain the tank (leave the drain open).
(This places the dishwasher in a FILL mode because the tank is empty.)

13. Turn the dishwasher main power switch ON.

14. The Green FILL light in the control cabinet will be ON when the machine is lling.

15. While the machine is lling, adjust the HOT PRV #1 until the nal rinse pressure gauge indicates
20 PSI. Tighten the PRV adjustment lock-nut to hold the setting.

16. Close the drain and allow the dishwasher to ll with water.

17. Turn the dishwasher main power switch OFF.

18. Make sure the main breaker or steam supply to the booster is OFF.
Turn the hot water off.

19. Turn the dishwasher control panel Power Switch on.

20. Press the ENERGY SAVER mode selector switch on the main control cabinet.
The green LED will illuminate and the conveyor will run.

21. While the machine is running, adjust the COLD PRV #2 until the nal rinse pressure gauge indicates 20
PSI. Tighten the PRV adjustment lock-nut to hold the setting.

22. Now set the cold water PRV #2 by adjusting the PRV until the nal rinse pressure gauge indicates 20 PSI

ow pressure. Note that the pressure gauge will cycle on for 15 seconds and then off for 30; therefore, the
pressure gauge will read a owing pressure for 15 secs., then read the no pressure for 30 seconds.

23. The Green FINAL light will be ON when the Cold water valve is ON. The Green REHEAT light will be ON
when the Hot water valve is ON.

24. To complete the settings: Turn the dishwasher main power switch OFF.

25. Turn the main breaker or steam supply to the booster on.

26. Turn the Automatic/Manual switch inside the control cabinet to the Automatic position.

6

Setting the Booster Pressure Regulating Valves (PRV's)

To HRU

From HRU

Cold PRV

Hot PRV

To Tank
Fill

Cold Water In

Hot Water In

Multi-rinse Valve

To Final Rinse

A

#1

#2

1. Reinstall the main control cabinet cover.

2. Reinstall the coil assembly on the multi-rinse valve (A).

3. Open all drain valves and drain the dishwasher.

4. Turn the hot water supply ON.

5. Makes sure the main power supply is ON.

Installation

Installation

Steam In

Electric HRU Booster PRV Locations
(Right-to-left dishwasher installation).

Multi-Rinse Valve

A

Hot
PRV #1

Cold
PRV #2

Hot In
Cold In

Steam HRU Booster PRV Locations

(Right-to-left dishwasher installation).

7

Installation

The 15 second timer runs, then the 30 second timer runs in a alternating time cycle

Operation Indicator Lights

Green indicator lights inside the HRU control cabinet
indicate the operation state of the valves during the
set-up procedures. Refer to the set-up procedures on the
previous two pages to set the pressure reducing valves.

In addition, the green lights will indicate the operation of the
booster valves during normal operation. Refer to
the simplied logic diagram below which shows the
interaction of the timers, thermistor reader (temperature
control module) and the booster solenoid valves.

Exhaust Blowers

The HRU Exhaust Blowers operate when the dishwasher
is running.
Exhaust Blower 1: runs whenever the dishwasher pumps
and the final rinse are running.
Exhaust Blower 2: runs when only the final rinse is running.

Exhaust Blower
Fan 2 (Wire 17B)

Exhaust Blower
Fan 1 (Wire 11B)

Green Indicator Lights

FINAL

Thermistor
Reader

REHEAT

FILL

30 Sec.Timer

15 Sec.Timer

Exhaust Blowers as viewed from the front of the dishwasher.

(Left-to-Right Dishwasher Operation Shown)

15 Second Timer (T1)

Controls the operation of the T1R
relay. The T1R relay powers the
COLD water valve depending
on the temperature input to
the Thermistor Reader.

15 Seconds

Elapsed

Thermistor Reader (TS)

The thermistor reader constantly
monitors the temperature of the
booster tank. It controls the
power to the timers through the
contacts of the T1R and T2R
relays. The operation of the
valves is dependent on the
temperature inputs to TS.

Indicator lights inside the control cabinet

indicate the operation of the valves.

A detailed Logic Diagram is included at the

end of this manual

Booster Temperature Thermistor Input

Temperature

Less than

110˚F

Temperature
Greater than

110˚F

30 Second Timer (T2)

Controls the operation of the T2R
relay. The T2R relay powers the
HOT water valve depending
on the temperature input to
the Thermistor Reader.

NOTE:

Hot Water/Reheat Valve

Simplied HRU Cold and Hot Water Switching Logic Diagram

8

NOTE:

The operation of the HRU is automatically controlled by the dishwasher
control circuit. The HRU has a control that is accessed only by a trained
service technician.

Refer to the illustration below to prepare the HRU for operation.

1. Open the top cover of the HRU and remove any foreign objects.
(Refer to the cleaning section on the next page for detailed cleaning instructions.

2. Make sure the access cover is in place and secured by its retaining studs.

3. Make sure the vent adjustment handle is secure and set to its normal operating
position.

Automatic Operation:

Operation

Operation

1. The HRU operates whenever the dishwasher pumps run.

2. Hot air from the dishwasher interior is recycled through the HRU and exhausted
from the HRU vent which has been permanently connected to the building vent system.

3. A small amount of exhaust air may exit the unload end of the dishwasher. This is a
normal condition.

4. The HRU is off whenever the dishwasher pumps are not running.

Top Cover

Vent Adjustment Handle

Access Cover

9

Cleaning

Cleaning

CAUTION:

Do not place objects on top of the condenser coil nor with the cleaning
devices. Avoid the use of cleansers or other detergents to prevent
damage to the top of the coil

Refer to the illustration below.

Monthly Cleaning Schedule:

1. Open the top cover over of the HRU.

2. Remove the front cover of the unit by sliding it up.

3. Remove the front access cover which is retained by three knurled thumbscrews.

4. Flush the top of the condenser coil with fresh water.

5. Do not wipe nor brush the coil ns.

6. Flush the underside below the condenser coil with fresh water.

7. Leave the HRU covers off overnight to allow the inside of the unit to air dry.

8. Reassemble in reverse order at the beginning of the day.

Daily Cleaning Schedule:

1. Inspect the interior unit for
accumulated debris.

2. Wipe the exterior of the unit
with a soft cloth and mild
detergent.

3. DO NOT HOSE THE
EXTERIOR OF THE UNIT
WITH WATER.

Annual Cleaning Schedule:

1. Contact an authorized
service agent to perform
general maintenance and
major cleaning.

Front Cover

Top Cover

10

Condenser Coil

Access Cover

Service Replacement Parts

Service Replacement Parts

Illustrations Page

Heat Recovery Unit ............................................................................................................. 12

Control Cabinet - Prior to S/N J11022850 ........................................................................... 14

Control Cabinet Terminal Block - Prior to S/N J11022850 ................................................... 16

Control Cabinet - Beginning with S/N J11022850 and above .............................................. 18

Control Cabinet Terminal Block - Beginning with S/N J11022850 and above ..................... 20

HRU Electric Booster Assembly .......................................................................................... 22

HRU Electric Booster Piping................................................................................................ 24

HRU Steam Booster Assembly............................................................................................ 26

HRU Steam Booster Piping ................................................................................................ 28

11

Heat Recovery Unit

34

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Heat Recovery Unit

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1

1 100097 SCREW, TRUSS HD., 10-32 X 1/2" SST
2 0512027 COUPLER, BARB 3/4" MPT X 3/4" HOSE 4
3 100156 LOCKNUT, 3/4" NPT BRASS 2
4 333557 ACCESS PLATE WELDMENT, HRU PLENUM G3
5 100209 NIPPLE, 1/2" NPT X CLOSE BRASS 1
6 100735 BOLT, HEX HD., 1/4-20 X 5/8" SST
7 100736 BOLT, HEX HD., 1/4-20 X 3/4" SST
8 100738 BOLT, HEX HD., 1/4-20 X 1" SST
9 101187-1 HANDLE, THREADED DAMPER ASSY. 1
10 101187-2 HANDLE, DAMPER ASSY. 1
11 101187-3 WING NUT, DAMPER REGULATOR ASSY. 1
12 101187-4 WASHER, DAMPER REGULATOR ASSY. 1
13 101187-5 BRACKET ASSY., LOCK PIN DAMPER REGULATOR 1
14 101187-6 BEVELLED WASHER, DAMPER ASSY.
15 101259 PLUG, 1/8" NPT SQ. HD., BRASS 1
16 101502 NIPPLE, RTOE 3/4" NPT X 4-1/2" LG. BRASS
17 102415 COUPLING, 3/4" NPT BRASS 2
18 102504 PLUG, 1/2" NPT SQ. HD., BRASS 1
19 102505 PLUG, 3/4" NPT SQ. HD., BRASS 2
20 102514 TEE, 1/2" NPT BRASS 1
21 102519 TEE RED., 1/2" X 1/2" X 3/4" BRASS 2
22 103418 BUSHING, REDUCING, 1/2" NPT X 1/8" NPT BRASS 2
23 104883 SCREW, ROUND HD., 6-32 X 3/8" SST
24 104971 HEX GRIP NUT, 6-32" SST
25 106026 WASHER, FLAT SST
26 106482 WASHER, LOCK 1/4" SPLIT SST
27 107033 WASHER, FLAT SST
28 107136 SCREW, HEX HD., 10-32 X 3/8" SST 9
29 107966 HEX GRIP NUT, 10-32 W/NYLON INSERT 3
30 107967 HEX GRIP NUT, 1/4-20 W/NYLON INSERT 14
31 109910 FITTING, COMP 5/8" OD X 90° BRASS
32 109924 FITTING, COMP 5/8" OD UNION BRASS 2
33 109925 FITTING, COMP 5/8" OD X 1/2"MPT BRASS 2
34 111561 HANDLE, ACCESS DOOR, FLUSH MOUNT
35 113269 CLAMP, HOSE M12 11/16"-1-1/4" W/CS SCREW 6
36 333556 CLIP, ACCESS PLATE PIVOT, HRU PLENUM
37 114121 HOSE, 3/4" SYNTHETIC RUBBER A/R
38 114335 THERMISTOR, 10KΩ, 36" LEAD 1
39 114633 BLOWER, HEAT RECOVERY UNIT
40 114646 RECEPTACLE, 1/4 TURN
41 114647 SPRING, 1/4 TURN SST 2
42 114648 WASHER, WEAR, CLIPPED
43 114649 RING, RETAINER SST
44 114650 STUD, 1/4 TURN, KNURLED SST 2
45 114710 COIL, BATTERY, HEAT RECOVERY UNIT GEN.3 1
46 305141 BLADE, DAMPER, VENT STACK
47 333143, (333216) PANEL, FRONT FAN END, RL (LR NOT SHOWN) 1
48 333144, (333217) PANEL, FRONT COIL END, RL (LR NOT SHOWN) 1
49 333145 ANGLE, FRONT PANEL STOP 1
50 333151, (333220) PANEL, REAR, FAN END, RL (LR NOT SHOWN) 1
51 333152, (333221) PANEL DEVP., REAR COIL END, RL (LR NOT SHOWN) 1
52 333153, (333222) PANEL DEVP., REAR, CENTER, RL (LR NOT SHOWN) 1
53 333341, (333342) BODY WELDMENT, HRU, RL (LR NOT SHOWN) 1
54 333345, (333346) DUCT WELDMENT, OUTLET, RL (LR NOT SHOWN) 1
55 333350, (333351) COIL COVER WELDMENT,RL (LR NOT SHOWN) 1
56 333353 PANEL WELDMENT, TOP VENT 1
57 333355, (333357) PLATE WELDMENT, BLOWER MTG, RL (LR NOT SHOWN) 1
58 333358 PLATE DIVIDER, RH COIL CHAMBER
59 333359 PLATE WELDMENT, DIVIDER LH
60 333360 ANGLE DIVIDER MOUNTING 4
61 100141 HEX, GRIP NUT, 1/4-20 SST CTRL LOCK
62 100734 BOLT, HEX HD. 1/4-20 X 1/2" SST 4
63 114365 CONNECTOR, STRAIN RELIEF, CORD 2
64 114879 BOX, WEATHERPROOF, 4-HOLE 1
65 114880 COVER ASSY., WEATHERPROOF W/GASKET
66 334221 BRACKET, FAN JUNCTION BOX HRU 1

0

2

5
7
2

13

Control Cabinet - Prior to S/N J11022850

4

3

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1

See next page

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Prior to S/N J11022850

Prior to S/N J11022850 - Control Cabinet

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1 333305 CONTROL CABINET WELDMENT, HRU W/XFRM
2 106364 LIGHT, INDICATOR
3 107966 HEX GRIP NUT, 10-32 W/NYLON INSERT SST
4 333536 BRACKET, LIGHTS HRU CONTROL CABINET 1
5 114661 TIMER, FIXED 15 SECOND 120VAC
6 113769 DIN RAIL 35MM X 15MM A/R
7 100095 SCREW, ROUND HD., 10-32 X 3/8" SST
8 114666 RESISTOR, 10Ω 2W
9 111068 RELAY, 2-POLE 10A, 120VAC
10 111036 SOCKET, RELAY 2 POLE
11 114662 TIMER, FIXED 30 SECOND 120VAC
12 100007 SCREW, TRUSS HD., 10-32 X 3/8" SST
13 106396 SCREW, TRUSS HD., 10-32 X 1-1/4" SST
14 333306 COVER, CONTROL CABINET HRU W/XFRM 1
15 114655 TEMPERATURE CONTROL MODULE, HRU 1
16 111823 FUSE, ATDR 6A
17 106402 BLOCK, FUSE 2 POLE
18 107091 TRANSFORMER, 500VA 240/480, 230/460:120 1

--- 111521 TRANSFORMER, 250VA 575:120VAC
19 100003 HEX PLAIN NUT, 1/4-20 SST
20 106482 WASHER, LOCK, 1/4" SPLIT SST 12
21 100735 BOLT, HEX HD., 1/4-20 X 5/8" SST 8
22 333307 INNER PANEL, CONTROL CABINET HRU W/XFMR 1

15

Control Cabinet Terminal Block - Prior to S/N J11022850

3

4

2

2

1

5

6

7

8

4

9

16

Prior to S/N J11022850 - Control Cabinet Terminal Block

1 114520 TERMINAL, SINGLE MZB 1.5-NS35 2
2 114512 TERMINAL, SINGLE, ST 2.5 (GRAY) 9
3 114517 TERMINAL, DOUBLE STTB 2.5 4
4 114519 END BLOCK, E/NS 35N 2
5 114522 BUS BAR 4-POLE (CUT TO FIT) 1
6 114518 END COVER, DOUBLE TERMINAL, D-STTB 2.5 1
7 114515 TERMINAL, SINGLE GROUND, ST 2.5 PE (GREEN) 1
8 114516 END COVER, SINGLE TERMINAL D-ST 2.5 1
9 114521 END COVER, SINGLE TERMINAL D-MZB 1.5 NS35 1

17

Control Cabinet - Beginning with S/N J11022850 and above

See next page for

terminal block detail.

16

FILL REHEAT RINSE

19

17

18

20

4

14

13

12

2

15

11

10

5

7

Prior to S/N J11022850

(Right to Left Direction Shown)

(For left to right direction, flip inner panel to place transformer to the left)

9

8

3

6

1

18

Beginning with S/N J11022850 and above - Control Cabinet

4

9

8

2

1

1

1

1

6

6

2

1

1
1

2

2

2

1

1 100003 HEX PLAIN NUT, 1/4-20 SST
2 100095 SCREW, ROUND HD., 10-32 X 3/8" SST
3 100735 BOLT, HEX HD., 1/4-20 X 5/8" SST
4 106396 SCREW, TRUSS HD., 10-32 X 3/8" SST
5 106402 BLOCK, FUSE 2 POLE
6 106482 WASHER, LOCK, 1/4" SPLIT SST
7 107091 TRANSFORMER, 500VA 240/480, 230/460:120

--- 111521 TRANSFORMER, 250VA 575:120VAC
8 111036 SOCKET, RELAY 2 POLE
9 111068 RELAY, 2-POLE 10A, 120VAC
10 111823 FUSE, ATDR 6A
11 333307 INNER PANEL, CONTROL CABINET HRU W/XFMR
12 114655 TEMPERATURE CONTROL MODULE, HRU 1
13 114662 TIMER, FIXED 30 SECOND 120VAC
14 114661 TIMER, FIXED 15 SECOND 120VAC
15 114666 RESISTOR, 10Ω 2W
16 114862 CIRCUIT BREAKER, 2A
17 107966 HEX GRIP NUT, 10-32 W/NYLON INSERT SST
18 333536 BRACKET, LIGHTS HRU CONTROL CABINET
19 106364 LIGHT, INDICATOR 3
20 113769 DIN RAIL 35MM X 15MM X 13" LG. A/R

NS 333306 COVER, CONTROL CABINET HRU W/XFRM 1
NS 333305 CONTROL CABINET WELDMENT, HRU W/XFRM 1

2

19

Control Cabinet Terminal Block - Beginning with S/N J11022850 and above

3

4

6

2

7

4

1

9

8

5

20

5

Beginning with S/N J11022850 and above - Control Cabinet Terminal Block

1 114520 TERMINAL, SINGLE MZB 1.5-NS35 2
2 114512 TERMINAL, SINGLE, ST 2.5 (GRAY) 7
3 114517 TERMINAL, DOUBLE STTB 2.5 5
4 114519 END BLOCK, E/NS 35N 2
5 114522 BUS BAR 10-POLE (CUT POLES TO FIT) 2
6 114518 END COVER, DOUBLE TERMINAL, D-STTB 2.5 1
7 114515 TERMINAL, SINGLE GROUND, ST 2.5 PE (GREEN) 1
8 114516 END COVER, SINGLE TERMINAL D-ST 2.5 1
9 114521 END COVER, SINGLE TERMINAL D-MZB 1.5 NS35 1

21

HRU Electric Booster Assembly

2

1

16

14

19

11

26

15

6

7

13

24

25

22

12

5

21

3

8

4

27

10

9

23

18

17

20

To HRU

From HRU

Cold PRV

High Limit Thermostat

Control
Thermostat

Hot PRV

To Tank
Fill

Cold Water In

Hot Water In

To Final Rinse

22

HRU Electric Booster Assembly

1 100003 HEX PLAIN NUT 1/4-20 SST 11
2 100097 SCREW, TRUSS HD. 10-32 X 1/2” SST 2
3 100100 SCREW, ROUND HD., 8-32 X 1/4” SST 2
4 100113 CAP, 3/4” NPT SST 1
5 100154 HEX PLAIN NUT, 5/16-18 SST 6
6 100734 BOLT, HEX HD., 1/4-20 X 1/2” SST 2
7 100736 BOLT, HEX HD., 1/4-20 X 3/4” SST 2
8 100739 BOLT, HEX HD., 5/16-18 X 3/4” SST 2
9 100740 BOLT, HEX HD., 5/16-18 X 1” SST 4
10 102376 WASHER, FLAT 5/16-18 SST 4
11 102505 PLUG, 3/4” NPT SQ. HD., BRASS 1
12 106013 WASHER, LOCK SPLIT 5/16” SST 6
13 106026 WASHER, FLAT 1/4” SST 2
14 106482 WASHER, LOCK SPLIT 1/4” SST 2
15 107967 HEX GRIP NUT, 1/4-20 SST W/NYLON 14
16 108576 COVER, BOOSTER HEATER 1
17 109069 THERMOSTAT, CONTROL 1
18 109682 COVER, THERMOSTAT BOX 1
19 109985 O-RING, BOOSTER HEATER ELEMENT 3
20 110561 THERMOSTAT, HIGH LIMIT 1
21 206668 ANGLE, ELECTRIC BOOSTER SUPPORT 1
22 206919 ANGLE, ELECTRIC BOOSTER SUPPORT, D3 1
23 314102 BOX, DUAL THERMOSTAT 1
24 328254 BRACKET, BOOSTER SUPPORT W/HOLE 1
25 330571 BRACKET, PIPING SUPPORT ELEC. BOOSTER 1
26 414331 TANK, BOOSTER 1
27 111232 ELEMENT, BOOSTER 10KW, 208/60/3 3

23

HRU Electric Booster Piping

Hot Water In

3

6

A

Hot PRV

B

To Tank
Fill

C

Cold PRV

To Final Rinse

D

From HRU

To HRU

3

10

4

8

2

B

Cold Water In

18

1

2

3

2

2

10

9

17

11

A

5

4

9

19

2

7

10

4

5

2

C

2

12

13

3

9

24

6

1

5

3

3

15

2

2

3

16

3

5

2

4

8

14

2

2

9

4

D

10

HRU Electric Booster Piping

1 100184 NIPPLE, 3/4” NPT X CLOSE, BRASS 2
2 100209 NIPPLE, 1/2” NPT X CLOSE, BRASS 12
3 102438 ELBOW, STREET, 1/2” NPT X 90°, BRASS 8
4 102514 TEE, 1/2” NPT BRASS 5
5 102549 UNION, 1/2” NPT, BRASS 4
6 102392 BUSHING, REDUCING 3/4” NPT X 1/2” NPT, BRASS 2
7 109879 FITTING, COMP. 7/8” OD X 3/4” MPT, BRASS 1
8 108265 VALV, PRESSURE REGULATING, 1/2” NPT BRONZE 2
9 109925 FITTING, COMP., 5/8” OD X 1/2” MPT BRASS 4
10 111352 VALVE, SOLENOID 1/2” NPT 115V BRASS 4

--- 109902 KIT, REPAIR, 1/2” SOLENOID VALVE A/R

--- 108516 COIL, SOLENOID VALVE 1/2” NPT 115V A/R
11 102444 ELBOW STREET, 1/2” NPT 90°, BRASS 1
12 102492 NIPPLE, 1/2” NPT X 2” LG. BRASS 1
13 102570 NIPPLE, 1/2” NPT X 4” LG. BRASS 1
14 100206 NIPPLE, 1/2” NPT X 2-1/1” LG. BRASS 1
15 102504 PLUG, 1/2” NPT, SQ. HD. BRASS 1
16 104421 STRAINER, LINE, 1/2” NPT BRONZE 1
17 110768 STRAINER, LINE, 3/4” NPT BRONZE 1
18 102525 TEE, RED, 3/4” X 1/2” X 1/2” NPT BRONZE 1
19 102574 NIPPLE, 1/2” NPT X 5” LG. BRASS 1

25

HRU Steam Booster Assembly

9

12

2

4

5

11

6

2

8

1

10

5

6

8

7

1

3

26

HRU Steam Booster Assembly

1 100140 HEX PLAIN NUT, 3/8-16 SST 6
2 100153 BOLT, HEX HD. 3/8-16 X 1" SST 4
3 100154 HEX PLAIN NUT, 5/16-18 SST 2
4 100739 BOLT, HEX HD., 5/16-18 X 3/4" SST 2
5 102376 WASHER, FLAT 5/16" SST 4
6 104618 WASHER, FLAT 3/8" SST 4
7 106013 WASHER, LOCK 5/16" SPLIT SST 2
8 106407 WASHER, LOCK 3/8" SPLIT SST 6
9 112334 U-BOLT, #180 BOOSTER 1
10 330244 BASE, DECK STEAM BOOSTER 1
11 330245 SUPPORT, STRAINER STEAM BOOSTER 1
12 601923 BOOSTER SUB ASSY, STEAM #120 RL 1

27

HRU Steam Booster Piping

28

HRU Steam Booster Piping

1 100123 PETCOCK, 1/4” FEMALE BRASS 1
2 100134 ELBOW, STREET, 1” NPT X 90° MI 2
3 100979 BUSHING, RED 1-1/2” NPT X 1” NPT BI 2
4 102288 ELBOW, 1/2” NPT X 90° MI 1
5 102402 BUSHING, RED. 3/4” NPT X 1/2” NPT BI 1
6 103465 BUSHING, RED. 3/4” NPT X 1/2” NPT BI 1
7 103586 UNION, 1/2” NPT MI 1
8 105733 ELBOW, 1” NPT, X 90° MI 1
9 105778 UNION 1/2” NPT MI 1
10 105780 UNION 1” NPT MI 2
11 105782 NIPPLE 1/2” NPT X CLOSE BI 2
12 105786 NIPPLE 1/2” NPT X 3” NPT LG. BI 1
13 105847 NIPPLE, 1” NPT X CLOSE BI 1
14 105850 NIPPLE, 1” NPT X 2“ LG. BI 3
15 105851 NIPPLE, 1” NPT X 2-1/2” LG. BI 1
16 105881 NIPPLE, 1-1/2” NPT X CLOSE BI 2
17 106051 STRAINER, LINE 2” NPT BI 1
18 106607 NIPPLE, 2” NPT X CLOSE BI 1
19 107004 TEE, RED 1-1/2” X 1/2” X 1-1/2” MI 1
20 107657 TEE, RED, 2” X 1-1/2” X 1-1/2” NPT MI 1
21 110005 VALVE, 1” NPT STEAM 1
22 111380 STEAM TRAP, 1/2” NPT TDC 1
23 112349 BUSHING, RED. 1-1/2” NPT X 1/2” NPT BI 1
24 112359 TEE, RED. 3/4” X 3/4” X 1” NPT BI 1
25 112748 NIPPLE, 1/2” NPT X 3-3/4” LG. BI 1
26 114167 BOOSTER, THRUSH #120-1 1
27 601921 PIPING ASSY, STEAM BOOSTER, EXIT RL 1
28 601922 PIPING ASSY, STEAM BOOSTER, INLET RL 1
29 113352 VALVE, 1/2” NPT SOLENOID 12OVAC 4
30 110768 STRAINER, LINE 3/4” NPT BRONZE 1
31 107550 VALVE, PRV 3/4” NPT BRONZE 1
32 110005 VALVE, STEAM 1” NPT SOLENOID 120VAC 1
33 109069 THERMOSTAT, CONTROL W/ CAPILLARY 1

29

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30

Electrical Schematics and Operation Logic Diagram

One Line Piping Diagram

Operation Logic Diagram

and

Electrical Schematic

31

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32

One Line Piping Diagram

FROM MAIN CABINET

MULTI-

RINSE
HEADER

COLD WATER

COLD WATER VALVE

V1

INITIAL FILL VALVE

V2

FAN 1

FAN 2

COIL

COIL TEMP

REHEAT RINSE VALVE V3

MULTI-RINSE VALVE
USED ON EEUC ONLY

FINAL
RINSE
HEADER

BSTR

HOT WATER

ONE LINE DIAGRAM FOR HEAT RECOVERY UNIT (HRU)
MODELS - EUCC4, EUCC8, EUCC6, EEUCC8, EEUCC6, EEUCC4

33

Operation Logic Diagram

34

HRU Logic Diagram

v.8410

Electrical Schematic

35

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Left Blank

36