Natco RETRIEVER I User manual

RETRIEVER I—STEAM ONLY
NATIONAL COMBUSTION CO., INC.
104-11 180th Street
Jamaica, NY 11433
Ph: 718-291-8400 Fx: 718-291-6870
Installation Manual

RETRIEVER I—Steam Only —Operating Principles 2
The Retriever I: Purpose
The purpose of the RETREIVER I for Steam Only is to recover heat and steam
remaining in condensate returns in order to generate hot potable water.
The Retriever I: Sequence of Operation
1. When hot domestic water is drawn from the Retriever I, incoming cold water
replaces it and the temperature decreases.
2. When the temperature dips below the set point on the control, the steam solenoic
valve will open and reduced-pressure steam will enter the Retriever’s coil.
3. When the temperature of the water in the tank reaches the set point, the steam
solenoid valve will close. No steam or will circulate through the coil.
4. The vinyl and polyurethane insulation jacket allows less than 1/2 degree per hour
standby loss.
Frequently Asked Questions
Q: Do I need steam traps on the heat exchanger outlets?
A: The surface area of the Retriever’s coil is oversized for most applications in
laundries and Drycleaning plants. Steam traps are usually not necessary because all
of the steam will be condensed upon exiting the coil.

RETRIEVER I—Steam Only —Basics Diagram 3
Get the feel of your Retriever I:
Blue connections are potable water side connections
Red connections are non-potable boiler steam or condensate
connections.
Black ports are dry wells for installation of control sensor.
Note: This diagram is not exactly to scale.
For Relief Valve
3/4” on all models
Hot Water Out
1” on 80 gallon models
1-1/2” on 119 gallon models
Sensor Well (dry)
All models
Cold Water In
1” on 80 gallon models
1-1/4” on 119 gallon models
Steam/Condensate In
1-1/4” - All models
Steam/Condensate Out
1-1/4” - All models
Temperature Gauge
All models

Potable Side Parts Live Steam Side Parts Condensate Side Parts Other Parts
RETRIEVER I—Steam Only —Plumbing Diagram 4
To return tank
Hot water out (potable)
P1
B
Cold in (potable)
P2
P3 B
OUT
D
S5 S4 S3 S2 S1
B
IN
P1. 40XL T&P Relief Valve
(included) S1. 3/4” Y-strainer (included) NOT APPLICABLE E1. Honeywell T775B control (included)
P2. Expansion Tank (optional) S2. Steam Pressure Reducing
Valve (included) E2. Sensor for Honeywell T775B (insert into dry well)
P3. Water Check Valve (not
included) S3. 3/4” NC* Steam Solenoid (Parker 12FS5C, Jefferson
1342BT06T)
V. 3/8” Blowdown Valves—
Quantity of 2 (included)
R. Bronze recirculator pump
(optional). Install on 1/2” or
3/4” line.
S4. 60 # Pressure Gauge
(included) D. recommended drain valve (not included).
S5. 15 # Steam Relief Valve
(included) *NC = Normally Closed *NO = Normally Open B. Recommended ball valve (not included)
E1

RETRIEVER I—Steam Only—Wiring Diagram
NO COM NC
OUT—1OUT-2
HONEYWELL T775B
120 COM 240
POWER IN
S3—Normally Closed 3/4” Steam
Solenoid Valve
Parker 12FS5C2448ACH4C05
Jefferson 1342BT06T
Sensor (in well)
5
CAUTION:
ALL WIRES
AND
TEMERINALS
EXCEPT FOR
SENSOR
WIRES CARRY
120 VOLTS.
ALL WIREING
SHOULD BE
COMPLETED
BY A
QUALIFIED
ELECTRICIAN.
T
TSensor A
Sensor B
NO COM NC

RETRIEVER I—Steam Only —Troubleshooting 6
Problem Cause Solution
Water in tank exceeds set
point temperature 1) Sensor is not positioned properly
2) Sensor is not wired properly
3) A solenoid valve is stuck open
4) Sensor is malfunctioning.
5) Hot water is stacking at top of tank.
1) Check sensor, use thermally
conductive puddy.
2) Check wiring of sensory, check
Honeywell recc. for type of wire.
3) Clean or rebuild solenoid valves.
4) Replace sensor.
5) Install recirculation loop.
Aquastat is calling for
heat, but piping leading to
the lower heat exchanger
is always cold.
1) Steam valve is not opening.
2) Strainer is clogged.
3) Regulator is set too low, or
malfunctioning.
1) Clean or rebuild steam valve.
2) Blow down 3/4” Y-Strainer.
3) Set regulator or replace.
Water-side relief valve is
blowing when no potable
water is used.
1) Expansion tank missing or not
sufficiently pressurized.
2) Tank is overheating.
1) Install tank or charge tank to street
pressure.
2). See above.
Water-side relief valve is
blowing when potable
water is used.
High water pressure or water hammer
coming from main supply. Install a pressure reducing valve on the cold water side of the tank (expansion
tank must also be installed).
General Maintenance Notes:
1. Blow down your Y-strainers. This will lengthen the life of your solenoid valves.
2. Recharge your expansion tank. If the expansion tank loses air pressure, it’ll
become useless. Make sure you charge your expansion tank so that the air
pressure equals the water pressure coming from the street.
3. Make sure that the control stays dry. Like any electrical component, when wet
it will malfunction and will likely be destroyed.
4. If you have a hard water situation, occasionally de-lime the tank utilizing a de-
liming kit (available at most plumbing supplies).
5. DO call NATCO with questions. You can reach us at the following:
National Combustion Co., Inc.
104-11 180th Street
Jamaica, NY 11433
Ph: 718-291-8400
Fx: 718-291-6870
Email: [e-mail]

RETRIEVER I—Steam Only —Limited Warranty 7
National Combustion Co., Inc. warrants the Retriever tank and integral heat exchangers for defects in
materials and workmanship for 5years after the certified date of installation or 5 years after the date
of purchase, whichever can be proven. If the date of installation is greater than one (1) year past the
date of purchase, the date of purchase + one (1) year will be the date for determining whether the
Retriever tank and integral heat exchanger are warranted.
National Combustion Co., Inc. warrants all other components for defects in material and workmanship
for 1 year of the date of purchase. The warranties of all other parts are subjects to the terms and
conditions of the various manufacturers of those components.
National Combustion Co., Inc. reserves the right to inspect tanks claimed by the purchaser to be
defective. Retriever tanks found to have defects in the tank or heat exchangers shall be replaced with
the closest available current model. National Combustion Co., Inc. will provide a replacement, but is
not liable for costs of (i) shipping replacement tanks, (ii) labor for installation of a replacement and
removal and disposal of a defective tank, and (iii) inconveniences due to a defective water heater.
National Combustion Co., Inc. is not responsible for damage caused by a leaking tank or heat
exchanger. The Retriever tank should be positioned so that the flow of leaked water will not cause
damage.
National Combustion Co., Inc. does not warranty Retrievers in the case or malfunctions caused by or in:
1) Improper installation or maintenance accorded to these printed installation instructions.
2) Retrievers that have been moved from their initial site of installation.
3) Water freezing in the tank or heat exchanger(s).
4) Retrievers for which the tank or heat exchanger(s) have been repaired without express
authorization from National Combustion Co., Inc.
5) Excessive pressure due to extraordinary water pressure or failure to properly install and maintain an
expansion tank.
6) Failure to maintain tank to prevent buildup of lime and scale.
7) Operation of the Retriever in a corrosive environment.
8) Usage of the Retriever tank and heat exchangers for purposes other than heating water for potable
use.
9) Flood, fires, wind, or lightning.
THIS WARRANTY IS NOT-TRANSFERABLE AND IS FOR THE BENEFIT OF THE ORIGINAL PURCHASER
ONLY.
IMPORTANT:
To certify an installation date, call, write, or email National Combustion Co., Inc, with the following
information:
Name of Purchaser
Address of Installation
Name of Dealer Purchased From
Name of Contractor Responsible for Installation
Serial Number
All correspondence to the National Combustion Co., Inc. warranty department can be addressed to the
following:
National Combustion Co., Inc.
104-11 180th Street
Jamaica, NY 11433
[e-mail]
Ph: 718-291-8400 Fx: 718-291-6870