Hatco POWERMITE PMG-100 User manual

Powermite®
Gas Booster Water Heater
Models PMG-100 and PMG-200
Installation and Operating Manual
I&W 07.05.055.00
AVERTISSEMENT! Assurez-vous de bien
suivre les instructions données dans
cette notice pour réduire au minimum
le risque d’incendie ou d’explosion ou
pour éviter tout dommage matériel, toute
blessure ou la mort.
—Ne pas entreposer ni utiliser
d’essence ou ni d’autres vapeurs ou
liquides inflammables à proximité de
cet appareil ou de tout autre appareil.
— QUE FAIRE SI VOUS SENTEZ UNE
ODEUR DE GAZ:
• Ne pas tenter d’allumer d’appareil.
• Ne touchez à aucun interrupteur; ne
pas vous servir des téléphones se
trouvant dans le bâtiment.
• Appelez immédiatement votre
fournisseur de gaz depuis un
voisin. Suivez les instructions du
fournisseur.
• Si vous ne pouvez rejoindre le
fournisseur, appelez le service des
incendies.
• Ne retournez pas dans le bâtiment
sans l’autorisation du fournisseur
de gaz ou des pompiers.
— L’installation et l’entretien doivent
être assurés par un installateur ou
un service d’entretien qualifié ou par
le fournisseur de gaz.
Water Heaters for other than recreational
vehicle installation only.
Chauffe-eau pour installation autre que dans
des véhicules de loisir uniquement.
WARNING! If the information in these
instructions is not followed exactly, fire
or explosion may result causing property
damage, personal injury, or death.
— Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch;
do not use any phone in your
building.
• Immediately call your gas supplier
from a neighbor’s phone. Follow the
gas supplier’s instructions.
• If you cannot reach your gas supplier,
call the fire department.
• Do not return to your building until
authorized by the gas supplier or fire
department.
— Installation and service must be
performed by a qualified installer,
service agency, or the gas supplier.
GAS BOOSTER WATER HEATER
CERTIFIED TO NSF/ANSI 5
P/N 07.04.244.00 © 2018 Hatco Corporation
hatcocorp.com
Register Online!
(see page 2)
NOTE: Keep this manual in a safe location for future
reference.
NOTA: Conservez ce manuel dans un endroit sûr pour
pouvoir vous y référer plus tard.

2Form No. PMG100200M-0918
CONTENTS
INTRODUCTION
Hatco Powermite®Gas Booster Water Heaters are
instantaneous, fin tube type water heaters designed for use
with commercial dish machines to boost the temperature
of the regularly available hot water, usually 115°–150°F
(46°–66°C) up to 180°F (82°C). Water at 180°F (82°C) can be
used as sanitizing rinse water in commercial dish machines
in accordance with Health Codes, NSF Standard #5 and
plumbing codes.
Hatco Gas Booster Water Heaters are design certified by
CSA International and tested under the requirements of the
American National Standard, ANS Z21.10.3*CSA 4.3-2001,
Current Edition.
All Hatco Gas Booster Water Heaters are factory pre-plumbed
and pre-wired for easy installation. The control compartment
area is accessible from the front, which permits easy
installation, even when near other equipment.
All Hatco Gas Booster Water Heaters a re warranted to be
free of defects in material and workmanship under normal
use and service, when installed in accordance with factory
recommendations. Dependability of the booster heater is
preserved through proper, safe installation and operation.
Hatco Gas Booster Heaters are products of extensive research
and field testing. The materials used were selected for maximum
durability, attractive appearance, and optimum performance.
Every unit is inspected and tested thoroughly prior to shipment.
This manual provides the installation, safety, and operating
instructions for Powermite Gas Booster Heaters. Hatco
recommends all installation, operating, and safety instructions
appearing in this manual be read prior to installation or operation
of a unit.
Safety information that appears in this manual is identified by
the following signal word panels:
WARNING
WARNING indicates a hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION
CAUTION indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury.
NOTICE
NOTICE is used to address practices not related to personal
injury.
Important Owner Information..............................................2
Introduction...........................................................................2
Important Safety Information ..............................................3
Model Description ................................................................5
System Overview..................................................................6
Specifications .......................................................................6
General................................................................................6
Dimensions..........................................................................7
Booster Heater Sizing Chart................................................8
Installation........................................................................... 11
General.............................................................................. 11
Plumbing Installation .........................................................14
Gas Installation..................................................................18
Electrical Installation..........................................................19
Venting Installation ............................................................20
Operation.............................................................................22
General..............................................................................22
Maintenance........................................................................24
Replacement Parts List......................................................28
Wiring Diagram...................................................................30
Limited Warranty ................................................................31
Authorized Parts Distributors ...........................Back Cover
IMPORTANT OWNER INFORMATION
Record the model number, serial number, voltage, and
purchase date of the unit in the spaces below (specification
label located on the lower front, right-hand corner of the unit).
Please have this information available when calling Hatco for
service assistance.
Model No. ________________________________________
Serial No._________________________________________
Voltage___________________________________________
Date of Purchase___________________________________
Register your unit!
Completing online warranty registration will prevent delay in
obtaining warranty coverage. Access the Hatco website at
www.hatcocorp.com, select the Support pull-down menu,
and click on “Warranty”.
Business
Hours: 7:00  to 5:00  Monday–Friday,
Central Time (CT)
(Summer Hours: June to September—
7:00  to 5:00  Monday–Thursday
7:00  to 4:00  Friday)
Telephone: [phone]
E-mail: [email protected]
24 Hour 7 Day Parts and Service
Assistance available in the United States
and Canada by calling 800-558-0607.
Additional information can be found by visiting our web site at
www.hatcocorp.com.

Form No. PMG100200M-0918 3
IMPORTANT SAFETY INFORMATION
WARNING
FIRE OR EXPLOSION HAZARD:
• Unit must be installed by qualified, trained installers.
Installation must conform to all local plumbing and
gasfitting codes. Installation by unqualified personnel
will void the unit warranty and may lead to fire or
explosion causing property damage, personal injury, or
death. Check with local plumbing inspectors for proper
procedures and codes.
• Do not store or use gasoline or other flammable vapors
or liquids in the vicinity of this or any other appliance.
• The gas used with this unit must be the type specified
on the spec plate on this unit. To avoid personal injury
or damage to the unit, never use any other than the
specified gas.
• The heater and its gas connection must be leak tested
before placing the booster heater in operation. Use
soapy water or commercially available fluid for leak
test. DO NOT use open flame to test for leaks.
• The booster heater and its individual shut-off valve
must be disconnected and isolated from the gas
supply piping system during any pressure testing
of the system at test pressures in excess of 1/2 psi
(3.5 kPa.).
• This appliance must be isolated from the gas supply
piping system by closing its individual manual shutoff
valve during any pressure testing of the gas supply piping
system at test pressures equal to or less than 1/2 psig
(3.5 kPa).
• Dissipate test pressure from the gas supply line before
re-connecting the heater and its manual shut-off cock
to the gas supply line. Failure to follow this procedure
may damage the gas valve. Over-pressurized gas
valves are not covered by the warranty.
• If the information in these instructions is not followed
exactly, fire or explosion may result causing property
damage, personal injury, or death
ELECTRIC SHOCK HAZARD:
• Unit must be installed by qualified, trained installers.
Installation must conform to all local electrical codes.
Installation by unqualified personnel will void the unit
warranty and may lead to electric shock or burn, as well
as damage to unit and/or its surroundings. Check with
local electrical inspectors for proper procedures and
codes.
• Unit is not weatherproof. Locate unit indoors where
ambient air temperature is a minimum of 70°F (21°C).
• If an external electrical source is utilized, the appliance,
when installed, must be electrically grounded in
accordance with local codes, or, in the absence of local
codes, with the National Electrical Code, ANSI/NFPA 70,
and CSA C22.1, Electrical Code.
• Do not place aftermarket covers on or over booster
heater. Doing so can cause temperature and moisture
build-up resulting in premature failure and electrical
shock.
WARNING
ELECTRIC SHOCK HAZARD: Use only Genuine Hatco
Replacement Parts when service is required. Failure to use
Genuine Hatco Replacement Parts will void all warranties
and may subject operators of the equipment to hazardous
electrical voltage, resulting in electrical shock or burn.
Genuine Hatco Replacement Parts are specified to operate
safely in the environments in which they are used. Some
aftermarket or generic replacement parts do not have the
characteristics that will allow them to operate safely in
Hatco equipment.
This unit must be serviced by qualified personnel only.
Service by unqualified personnel may lead to fire,
explosion, electric shock, or burn.
ALWAYS turn OFF power at fused disconnect switch/circuit
breaker, shut off gas supply, and allow unit to cool before
performing any cleaning, adjustments, or maintenance.
Temperature/pressure protective equipment should not be
less than a combination temperature/pressure relief valve
certified by a nationally recognized testing laboratory that
maintains periodic inspection of the production of this
equipment and meets the requirements for Relief Valves
and Automatic Shutoff Devices for Hot Water Supply
Systems, CSA ANSI Z21.22 /CSA 4.4. The temperature/
pressure relief valve must be marked with a minimum
set pressure not to exceed the marked hydrostatic test
pressure of the booster heater as noted on the unit
specifications.
FOR INSTALLING PRESSURE AND TEMPERATURE
RELIEF VALVES IN ACCORDANCE WITH CSA ANSI
Z21.22/CSA 4.4. Combination pressure and temperature
relief valves with extension thermostats must be installed
so that the temperature-sensing element is immersed in
the water within the top 6″ (152 mm) of the tank. They
must be installed directly in a tank tapping. Combination
pressure and temperature relief valves that do not have
extension elements must be mounted directly in a tank
tapping located within the top 6″ (152 mm) of the tank, and
shall be adequately insulated and located so as to assure
isolation from ambient conditions that are not indicative
of stored water temperature. TO AVOID WATER DAMAGE
OR SCALDING DUE TO VALVE OPERATION, DRAIN PIPE
MUST BE CONNECTED TO VALVE OUTLET AND RUN TO
A SAFE PLACE OF DISPOSAL. Discharge line must be
as short as possible and be the same size as the valve
discharge connection throughout its entire length. Drain
line must pitch downward from the valve and must
terminate between 1-1/2″ (38 mm) and 6″ (152 mm) above
the floor drain where any discharge will be clearly visible.
The drain line shall terminate plain, not threaded, with
material serviceable for temperatures up to 250°F (121°C)
or greater. Excessive length, over 30' (9.1 m), or use of
more than four elbows can cause a restriction and reduce
the discharge capacity of the valve. No shut-off valve
shall be installed between the relief valve and tank, or in
the drain line. Valve lever must be tripped periodically to
assure that waterways are clear. This device is designated
for emergency safety relief and shall not be used as an
operating control. The valves are set to relieve at 150 psi
(1034 kPa) or when water temperature reaches 210°F
(99°C). Read tag on valve for additional information.
Read the following important safety information before using this equipment to avoid serious
injury or death and to avoid damage to equipment or property.

4Form No. PMG100200M-0918
WARNING
Should overheating occur or the gas supply fail to shut
off, turn off the manual gas control valve to the appliance.
Use only copper plumbing material. Non-copper plumbing
material may create an unsafe condition.
Units are equipped with a high temperature limit safety
switch that will shut off the power if the unit overheats.
Contact an Authorized Hatco Service Agent if the high
temperature limit safety switch cannot be reset or
continues to trip.
Before performing any maintenance/service, care should
be taken that any of the discharged water does not come
into contact with the operator or surrounding surfaces.
Water can be extremely hot and can cause severe scalding
and damage to the property.
If relief valve discharges periodically, do not plug valve.
If replacing valve does not stop discharge, contact an
Authorized Hatco Service Agent or the Hatco Service
Department.
Install booster water heater in a horizontal position with
the base parallel to the floor and the inlet connection at the
lowest point. Improper installation could create an unsafe
condition.
Do not connect booster water heaters to domestic
(consumer) dish machines or other domestic utilized
equipment. This booster may damage domestic equipment.
This product contains fiberglass, a product known to the
state of California to cause cancer, birth defects, or other
reproductive harm.
Install booster water heater as close as possible to
a commercial dish machine. Employ re-circulation if
distance between water heater and dish machine exceeds
National Sanitation Foundation (NSF) specifications of five
(5) linear feet (1524 mm).
Refer to the BOOSTER HEATER SIZING CHART in this
manual to ensure proper sizing and avoid personal injury
and/or damage to the booster heater.
It is essential to recognize that even though a water heater
may be properly installed initially and approved, there
always exists the possibility that unknowing individuals
might alter or change the installation in a manner that
would render it unsafe. Therefore, it is important that all
safety programs provide some mechanism to assure that
these installations are inspected periodically.
This unit has no “user-serviceable” parts. If service
is required on this unit, contact an Authorized Hatco
Service Agent or contact the Hatco Service Department at
800-558-0607 or 414-671-6350.
CAUTION
BURN HAZARD:
• Water in unit is very hot. Wear protective gloves and
proper attire when operating to avoid injury.
• Valves supplied by Hatco are designed for high
temperature commercial operation. Do not substitute
Hatco valves with valves designed for domestic water
heaters.
Do not use anti-siphon valves or check valves on incoming
water line. Damages caused by the use of these valves on
unit will not be covered by warranty.
Do not connect booster heater directly to a boiler or
furnace coil or any other uncontrolled temperature source.
The booster heater thermostat could be damaged causing
unit to overheat.
Incoming water temperature should be minimum of 85°F
(29°C). Damage to the heater can occur if water is cooler
than 85°F (29°C).
Do not connect an expansion tank of any type to booster
heater water lines.
Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and dangerous
operation. Verify proper operation after servicing.
Hatco requires that two temperature/pressure gauges
(Hatco P/N 03.01.003.00) be installed to ensure proper
operation. Install one in the supply line before the pressure
reducing valve and one in the outlet line as close to the
booster heater as possible. This provides a visual check
of the water temperature and pressure before and after the
water heater.
DO NOT turn on power to the booster heater until tank has
been filled with water and all air has been vented through
the dish machine rinse nozzles. Heating elements will burn
out in seconds if operated when not immersed in water.
To avoid freezing water damage to the booster heater
when the outside temperature is below 32°F (0°C), the unit
must be left ON and the venting must be protected from
migrating cold air.
Failure to drain the heat exchanger prior to exposing it to
freezing conditions will damage the heat exchanger and
void the warranty.
The use of cellular core PVC (ASTM F891), cellular core
CPVC, or Radel®(polyphenylsulfone) in nonmetallic
venting systems is prohibited. Covering non-metallic vent
pipe and fittings with thermal insulation is also prohibited.
Using or storing chlorine based products on or near the
booster heater may shorten the life of the unit and void the
product warranty.
NOTICE
If water supply pressure to the booster inlet is over 20
psi (138 kPa) during flow, install pressure reducing valve
with built-in bypass (Hatco P/N 03.02.004.00) for proper
operation of dish machine rinse nozzles.
NOTE: The pressure reducing valve must be the type equipped
with a high pressure bypass, as supplied by Hatco.
IMPORTANT SAFETY INFORMATION

Form No. PMG100200M-0918 5
IMPORTANT SAFETY INFORMATION
All Models
Hatco Gas Booster Water Heaters are available in two models:
PMG-100 and PMG-200. All standard models include a
booster heater with a stainless steel tank, low-water cut-off
system, temperature/pressure relief valve, pressure reducing
valve with built-in high pressure bypass, two temperature/
pressure gauges, blended phosphate water treatment system,

(straight and 90°), and a high temperature limit safety switch.
Model PMG-100
Model PMG-100 features three tube-type burners, a Power

PMG-100 units have provide up to 241 gallons per hour (GPH)
(912 liters per hour [LPH]) of sanitizing rinse water based on a
40°F (22°C) temperature rise.
PMG-100
Model PMG-200
Model PMG-200 features six tube-type burners, a Power

PMG-200 units provide up to 452 gallons per hour (GPH)
(1711 liters per hour [LPH]) of sanitizing rinse water based on
a 40°F (22°C) temperature rise.
PMG-200
NOTE: Hatco Booster Water Heaters are approved for use with
commercial dishmachines only.
NOTE: Refer to the OPTIONS AND ACCESSORIES section
for information on available options.
NOTICE
Incoming water supply to booster heater must be a
minimum of 20 psi (1.4 kg/cm2). Water pressure less than 20
psi (1.4 kg/cm2) will decrease operating life of recirculating
pump and unit.
NOTE: Product failure caused by incoming water pressure less
than 20 psi (1.4 kg/cm2) is not covered under warranty.
Always drain booster heater with power to the unit off or
element burnout could occur.
Use dielectric couplings when connecting dissimilar
metals, such as galvanized to copper. This will prevent
electrolysis or premature plumbing damage.
Do not back out or loosen any pipe fittings or leaks may
occur.
Do not lay unit on the side with the control panel or inlet
and outlet pipes. Damage to the unit could occur.
NOTICE
Incoming water in excess of 3 grains of hardness per
gallon (GPG) (0.75 grains of hardness per liter [GPL]) must
be treated and softened before being supplied to booster
heater(s). Water containing over 3 GPG (0.75 GPL) will
decrease efficiency, increase energy use, and reduce the
operating life of the unit through increased lime build-up.
Product failure caused by liming or sediment buildup is not
covered under warranty.
Units are voltage-specific. Refer to specification label
for electrical requirements before beginning installation.
Connecting unit to incorrect power supply will void product
warranty and may damage unit.
MODEL DESCRIPTION

6Form No. PMG100200M-0918
SYSTEM OVERVIEW
Hatco Powermite Gas Booster Water Heaters are designed
to maintain a temperature of 180°F (82°C) water required for
the rinse cycle of a commercial dishmachine. An inlet water
temperature of at least 110°F (43°C) will produce optimum
results (See Water Temperature Recovery Table and Booster
Heater Sizing Chart in the SPECIFICATIONS section).
After the necessary power, water, and gas connections are
completed, start the unit by turning on the toggle switch located
on the lower front base. The water circulating pump will start
at this time. Providing that operating and safety controls are
satisfied, the ignition module will begin a 20 second safety pre-
purge. Next, it will energize the spark igniter and turn on the
gas for the pilot. The igniter will spark for about 90 seconds or
until proof of a pilot fire. If there is a confirmed pilot fire and the
water temperature is below the setpoint, the unit will go into
full burn. The unit will stay in full burn until the desired setpoint
temperature is met, then the burner will shut off. During standby
periods of limited use, the burner will cycle on only to replace
standby water temperature loss. If for some reason the unit did
not ignite, there is an automatic five minute delay before the
unit attempts to ignite again.
During operation, water enters the booster heater at the inlet
water connection and flows into the stainless steel tank. It then
is pumped through the finned tube heat exchanger where it
is heated to the proper temperature. The heated water then
returns back to the top half of the stainless steel tank for supply
to the dishmachine. Water that is not used immediately by the
dishmachine is recirculated through the heat exchanger by the
water pump.
If the unit overheats above the setpoint temperature, the safety
high limit will open, shutting down the burner, locking out the
controller, and turning on the alarm pilot light. In order to reset
the unit, turn the unit off and depress the reset button on the
appropriate high limit switch, the tank high limit is located
behind front panel on the left hand side of the vertical control
panel. The heat exchanger high limit is located on the front
of the heat exchanger. The switches will not reset until the
temperature has dropped to a safe level. This unit must remain
off for at least 10 seconds before it can be restarted.
NOTE: The operating thermostat control is factory preset at
190°F (88°C).
NOTE: The circulator pump will stay on as long as the toggle
switch is in the ON position.
SPECIFICATIONS
Type Gas-fired, instantaneous recirculating booster heater with accumulator for use with
door-type dishmachines. Unit is floor mounted.
Capacity PMG-100: Input 105,000 BTUs/Hour. Output 84,800 BTUs/Hour = 24.8 kW
PMG-200: Input 195,000 BTUs/Hour. Output 156,000 BTUs/Hour = 45.7 kW
Fuel Natural Gas @ 5 inches water column (wc) — minimum inlet gas pressure
Propane @ 11 wc — minimum inlet gas pressure
Operating Water Pressure 150 pounds per square inch (psi) maximum (relief valve set at 150 psi), 210°F (99°C).
Power Supply 120 VAC, 15 amp service (unit uses 3.0 amps @ 120 volts).
Ignition Electronic spark pilot with flame proofing by rectification.
Temperature Control Electronic, temperature control probe/microprocessor based. Factory preset at 190°F
(88°C).
Safety Systems Energy cut off devices include manual reset heat exchanger high limit and
manually reset tank high limit. Redundant gas solenoid valve with integral regulator.
Temperature/Pressure relief valve on tank.
Fluing Direct — combustion air enters bottom, flue gases exit right side or back at top of unit
Vent 
Pump Recirculating with bronze housing.
Connections 

Electric: 120 VAC, 15 Amp
Shipping Weight PMG-100: 180 pounds (82 kg) dry
PMG-200: 215 pounds (98 kg) dry
General

Form No. PMG100200M-0918 7
NOTE: Capacity is reduced at altitudes above 2000 feet (610 m). See “High Altitude Installation and Operation” in the
INSTALLATION section for sizing considerations.
SPECIFICATIONS
Dimensions
Water Temperature Recovery Table—Fahrenheit
PMG-200 = 36″ (913 mm)
PMG-100 = 27-1/2″ (697 mm)
Water Inlet
Water Outlet
Gas Inlet
Temperature/pressure
relief valve installed
in rear location.
Temperature/pressure
relief valve port for
side installation.
Optional side
exhaust location.
Straight exhaust vent
adapter shown.
Primary rear
exhaust location
(on back of unit).
20-3/4″
(526 mm)
11-3/16″
(284 mm)
PMG-100 = 2-15/16″ (73 mm)
PMG-200 = 5-3/4″ (145mm)
31″
(786 mm) 25-1/4″
(641 mm)
11-3/16″
(283 mm)
14-9/16″
(370 mm)
13″
(330 mm)
6-1/4″
(159 mm)
2-1/4″
(57 mm)
6-1/8″
(155 mm)
19-3/8″
(492 mm)
7-1/2″
(191 mm)
Ø 7/8″ hole
for 1/2″
conduit
6-1/4″ (159 mm)
Front View Right Side View
Left Side View Top View
PMG-200 Shown
Model Input MBH (1000 BTU/Hour)
Gallons Per Hour (GPH) at Indicated Temperature Rise (°F)
30° 40° 50° 60° 70°
PMG-100 105 321 241 193 161 138
PMG-200 195 602 452 361 301 258

8Form No. PMG100200M-0918
Gas
Powermite®Booster†
Temperature Rise
Dishmachine Model Number 40°F (22°C) 70°F (39°C)
ADAMATION CSL-1390, CA-2, CA-3, CA-4, SLAP 44, CA, CA-1 ............. PMG-200 .......(2)PMG-200
BLAKESLEE Series “R & “F”-CC, -EE, -LL, -MM, -LLL, -MMM, -PCC,
-PEE, -PLL, -PMM (multi-tank) with suffix “LC” ............... PMG-200 ......PMG-200/100
Series XF-LL, XF-PLL, XF-MM, XF-PMM, XF-EEE,
XF-LLL, XF-MMM, (Multi-tank) with suffix “LC” ............... PMG-200 ...........---
DD-8 ................................................. PMG-100 ........PMG-200
Series R-L, R-PL, R-M, R-PM, F-L, F-PL, F-M, F-PM (single tank) . PMG-200 .......(2)PMG-200
Series XF-PEE, XF-PLL, XF-PMM, XF-EEE, XF-LLL, XF-MMM
(multi-tank) ........................................... PMG-200 .......(2)PMG-200
FA (Flight-A-Round) and RA (Rack-A-Round) use comparable “F” listing.
CHAMPION D-H1C, D-H1TC ........................................... --- ...........PMG-100
66 WSPW, 44-WS, 66-WS ................................... --- ...........PMG-100
UC-CW6-WS, US-CW8-WS ............................... PMG-100 ........PMG-200
44, 66 PW, 70FFPW, 80HDPW, 54, 76PW, 80FFPW,90HDPW 64,
90FFPW, 100HDPW, 86 PW ............................. PMG-100 ........PMG-200
40-KB, 40-KB-2-2, 40-KFWB, 40-KPRB, 40-KPRB-2-2,
40KPRB-2-3, 60-KB, 60-KB-2-2, 60-KFWB, 60-KFWB-2-2,
60-KPRB, 60-KPRB-2-3, 64KB, 64-KB Corner, 64-KPRB,
64-KPRB Corner, 64 Modular, 86 Modular .................. PMG-200 ......PMG-200/100
44-KB, 44-KB Corner, 44-KPRB, 44-KPRB Corner, 54-KB,
54-KB Corner, 54-KPRB, 54-KPRB Corner, 44 Modular,
66 PW Modular, UC** Series 6’ Center, UC-C4 .............. PMG-200 ......PMG-200/100
UC-CW4, UC-C......................................... PMG-200 ......PMG-200/100
UC**CW Series 6’ Center................................. PMG-200 .......(2)PMG-200
W-6-WS .............................................. PMG-200 .......(2)PMG-200
CMA
DISHMACHINES
CMA-44H with tank heater, CMA-66H ....................... PMG-100 ........PMG-200
HOBART AM-12, AM-12C*, AM-14, AM-14C............................. --- ...........PMG-100
Opti-RinSe C44A, CRS-66A, CCS-66A, CPW-80A, C54A,
CRS-76A, CCS-76A, CPW-90A, C64A, CRS-86A, CCS-86A,
CPW-100A, C-88A, CRS-110A, CCS-110A, CPW-124A ....... PMG-100 ........PMG-200
C-54A, CRS-76A, CPW-90A, CCS-76A ...................... PMG-200 ......PMG-200/100
C-44A, CRS-66A, CCS-66A, CPW-80A, C-64A, CRS-86A,
CCS-86A, CPW-100A .................................. PMG-200 ......PMG-200/100
C-88A, CRS-110A, CPW-124A, CCS-110A ................... PMG-200 ......PMG-200/100
Opti-RinSe C44AW, CRS-66AW, CCS-66AW, CPW-80AW ......... --- ...........PMG-100
C-44AW, CRS-66AW, CPW-80AW, CCS-66AW ............... PMG-100 ........PMG-100
C-44, CRS-66, CPW-80 .................................. PMG-200 ......PMG-200/100
C-54, CRS-76, CPW-90 .................................PMG-200/100......(2)PMG-200
C-64W, CRS-86W, CPW-100W, C-88W, CRS-100W,
CPW-124W, CCS-86W ................................. PMG-100 ........PMG-200
C-64, CRS-86, CPW-100C ................................ PMG-200 ......PMG-200/100
FT800W, FT-900W ...................................... PMG-200 ........PMG-200
FT-600, FT-700........................................PMG-200/100......(2)PMG-200
FT800 ................................................ PMG-200 .......(2)PMG-200
FT-900, FT800S, FT-900S ................................ PMG-200 ......PMG-200/100
FRC and FR (Fast Rack Series) use comparable “C” line listing.
SPECIFICATIONS
Booster Heater Sizing Chart

Form No. PMG100200M-0918 9
Gas
Powermite®Booster†
Temperature Rise
Dishmachine Model Number 40°F (22°C) 70°F (39°C)
INSINGER Commander 18-5, 18-5H, Ensign 40-2 ...........................--- ............PMG-100
Admiral 44-4, 66-4 ........................................PMG-100 .........PMG-200
Speeder 64, 86-3, Century (all) ..............................PMG-100 .........PMG-200
Trac 321, Trac 321-2/RPW .................................PMG-100 .........PMG-200
Trac 878 ...............................................PMG-100 .........PMG-200
Clipper (all), R106-2, Super 106-2............................PMG-100 .........PMG-200
Defender ...............................................PMG-200 ............---
Master (all)..............................................PMG-200 ............---
CA-3 ..................................................PMG-200 ............---
For outdated models, consult factory for correct booster.
JACKSON 44CE*, 66 CERPW .......................................PMG-200 ............---
54CE, 76 CERPW ........................................PMG-200 ............---
64CE, 86 CERPW .......................................PMG-200 ............---
100....................................................PMG-100 ............---
150.......................................................--- ............PMG-100
AJ-44, AJ-66, AJ-80, WH-44, ES-4400, ES-6600
(ECOLAB/JACKSON) ....................................PMG-100 .........PMG-200
AJ-54, AJ-76, AJ-90 ......................................PMG-200 ............---
AJ-64, AJ-86, AJ-100 .....................................PMG-100 .........PMG-200
*Model #44CE w/SN1999 or below requires larger booster than listed.
MEIKO K-44, K-66, K-80 .........................................PMG-100 .........PMG-200
K-54, K-76, K-90, K-64, K-86, K-100 ..........................PMG-100 .........PMG-200
METALWASH/INTEDGE
FW4 ......................................................--- ............PMG-100
SPECIFICATIONS
Booster Heater Sizing Chart (continued)
Shaded area indicates older models prior to Opti-Rinse.
*Hobart Model AM-12 with serial no. 12-067-357 or below and model AM-12C with serial no. 12-067-537 or below require slightly
larger booster than listed. Or C Models with serial no. 85-1041605 or greater use Opti-Rinse.
†Powermite installations above 2,000 ft. (610 m) will reduce the above capacities and may require change of pressure and/
or orifices in certain models at time of install to meet IAS safety compliance. These modifications are the responsibility of the
installer. Consult “Installation and Operating Manual” for sizing adjustments and orifice changes.
This selector chart is based on 40°F (22°C) and 70°F (39°C) temperature rises, 20 psi flow pressure, and minimum rinse cycle
timer setting in NSF listing.
All booster heaters are rated at 100% of the capacity of the dishmachines as recommended by the National Sanitation Foundation.
Where make-up water for wash tank is provided from final rinse supply, chart recommendations are based upon this additional
demand (not over 2 GPM) as required by NSF.
All sizings shown are that of the dishmachine manufacturers. Hatco Corporation is not responsible for incorrect sizing applications.

10 Form No. PMG100200M-0918
SPECIFICATIONS
This selector chart is based on 40°F (22°C) and 70°F (39°C) temperature rises, 20 psi flow pressure, and minimum rinse cycle
timer setting in NSF listing.
All booster heaters are rated at 100% of the capacity of the dishmachines as recommended by the National Sanitation Foundation.
Where make-up water for wash tank is provided from final rinse supply, chart recommendations are based upon this additional
demand (not over 2 GPM) as required by NSF.
All sizings shown are that of the dishmachine manufacturers. Hatco Corporation is not responsible for incorrect sizing applications.
Gas
Powermite®Booster†
Temperature Rise
Dishmachine Model Number 40°F (22°C) 70°F (39°C)
STERO SCT-44-10-LW, SCT-44-LW, SCT-66S-LW, SCT-76S-LW, SCT-90S-LW ........ --- ......... PMG-100
SC-1-2-4-LW, SC 1-6-4-LW, SC-2-4-LW, SC-5-2-4-LW, SC-5-6-4-LW,
SC-6-4-LW .....................................................PMG-100 ...... PMG-200
SCT-64, SCT-86S, SCT-94S, SCT-94SC ...............................PMG-100 ...... PMG-200
SCT-108S, SCT-108SC, SCT-76, SCT-94SM ...........................PMG-200 .....PMG-200/100
SC-6-4, SCT-44, SCT-44-10, SCT-66S, SCT-76S, SCT-76SC, SCT-90S ......PMG-200 .....PMG-200/100
SCT-120S, SCT-120SC, SCT-120SM, SCT-150SM .......................PMG-200 .....PMG-200/100
STW-110, SC-1-2-7-4, SC-1-6-3-4, SC-1-6-7-4, SC-2-7-4, SC-5-2-7-4,
SC-5-6-3-4, SC-5-6-7-4, SC-6-3-4, SC-6-7-4 ...........................PMG-200 .....PMG-200/100
SC-1-2-4, SC-1-6-4, SC-2-4, SC-5-2-4, SC-5-6-4 .........................PMG-200 ..... (2)PMG-200
SCT-44-10-SC-1-3-4, SCT-44-10-3-4, SCT-44-SC-1-3-4, SCT-44-SC-3-4,
SCT-54-SC-1-3-4, SCT-54-SC-3-4, SCT-76S-SC-3-4 ....................PMG-200 ..... (2)PMG-200
STPC (Four Tank) .................................................PMG-100 ...... PMG-200
STPCW (Four tank) ................................................PMG-100 ...... PMG-200
STPC ...........................................................PMG-200 .....PMG-200/100
STPCW .........................................................PMG-200 .....PMG-200/100
SCBT ...........................................................PMG-200 .....PMG-200/100
SF-2RA, SF-2DRA, SD-2RA, SDRA, SDRA-PACK ......................... --- ......... PMG-100
SCT-54, SCT-76SM................................................PMG-200 ..... (2)PMG-200
SCT-76, SCT-80, SCT-94, SCT-108, SCT-120...........................PMG-200 ..... (2)PMG-200
U-31-A, U-31-AC ..................................................PMG-100 ...... PMG-200
U-31-A2 .........................................................PMG-200 ..... (2)PMG-200
SC-2-3-4, SC-5-2-3-4 ..............................................PMG-200 ......... ---
SC20-2............................................................ --- ......... PMG-100
SC-2-8, SC-2-9, SC-1-2-8, SC-5-6-8, SC-6-8, SC-6-9, SC-1-6-8, SC-5-6-9,
SC-5-2-9, SC-1-6-9, SC-5-2-8 ......................................PMG-100 ...... PMG-200
Booster Heater Sizing Chart (continued)
†Powermite installations above 2,000 ft. (610 m) will reduce the above capacities and may require change of pressure and/
or orifices in certain models at time of install to meet IAS safety compliance. These modifications are the responsibility of the
installer. Consult “Installation and Operating Manual” for sizing adjustments and orifice changes.

Form No. PMG100200M-0918 11
INSTALLATION
General
WARNING
FIRE OR EXPLOSION HAZARD:
• Unit must be installed by qualified, trained installers.
Installation must conform to all local plumbing and
gasfitting codes. Installation by unqualified personnel
will void the unit warranty and may lead to fire or
explosion causing property damage, personal injury, or
death. Check with local plumbing inspectors for proper
procedures and codes.
• The gas used with this unit must be the type specified
on the spec plate on this unit. To avoid personal injury
or damage to the unit, never use any other than the
specified gas.
• The heater and its gas connection must be leak tested
before placing the booster heater in operation. Use
soapy water or commercially available fluid for leak
test. DO NOT use open flame to test for leaks.
• If the information in these instructions is not followed
exactly, fire or explosion may result causing property
damage, personal injury, or death
ELECTRIC SHOCK HAZARD:
• Unit must be installed by qualified, trained installers.
Installation must conform to all local electrical codes.
Installation by unqualified personnel will void the unit
warranty and may lead to electric shock or burn, as well
as damage to unit and/or its surroundings. Check with
local electrical inspectors for proper procedures and
codes.
• Unit is not weatherproof. Locate unit indoors where
ambient air temperature is a minimum of 70°F (21°C).
• If an external electrical source is utilized, the appliance,
when installed, must be electrically grounded in
accordance with local codes, or, in the absence of local
codes, with the National Electrical Code, ANSI/NFPA 70,
and CSA C22.1, Electrical Code.
To assure proper operation and avoid a possible unsafe
condition, the booster heater must be installed in a
horizontal position with the base parallel to the floor and
the inlet connection at the lowest point.
Install booster water heater in a horizontal position with
the base parallel to the floor and the inlet connection at the
lowest point. Improper installation could create an unsafe
condition.
Install booster water heater as close as possible to a
commercial dish machine. Employ re-circulation if distance
between water heater and dish machine exceeds National
Sanitation Foundation (NSF) specifications of five (5) linear
feet (1524 mm).
Refer to the BOOSTER HEATER SIZING CHART in this
manual to ensure proper sizing and avoid personal injury
and/or damage to the booster heater.
CAUTION
BURN HAZARD: Valves supplied by Hatco are designed for
high temperature commercial operation. Do not substitute
Hatco valves with valves designed for domestic water
heaters.
CAUTION
Incoming water temperature should be minimum of 85°F
(29°C). Damage to the heater can occur if water is cooler
than 85°F (29°C).
Unit is not weatherproof. Unit must be located indoors
where ambient air temperature is constant and is a
minimum of 70°F (21°C).
NOTICE
If water supply pressure to the booster inlet is over
20 psi (138 kPa) during flow, install pressure reducing
valve with built-in bypass (Hatco P/N 03.02.004.00) for
proper operation of dish machine rinse nozzles.
NOTE: The pressure reducing valve must be the type equipped
with a high pressure bypass, as supplied by Hatco.
Code Requirements
Installation must be in accordance with local codes, or in the
absence of local codes, with the latest edition of the National
Fuel Gas Code, ANSI Z223.1, the National Electrical Code,
ANSI/NFPA 70. Canadian installations should conform with
CSA-B149.1, Natural Gas and Propane Installation Code, and
CSA-C22.1 Electrical Code, and/or local installation codes.
NOTE: In the Commonwealth of Massachusetts, Hatco Booster
Heaters shall be installed by a licensed plumber and
gasfitter.
NOTE: The Commonwealth of Massachusetts requires that if
a water treatment system is installed in line with the
Hatco Booster Heaters, a water backflow protector shall
also be installed.
NOTE: If a check valve or water backflow protector is installed
and cannot be removed, install a back pressure relief
valve (Hatco P/N 03.02.039.00) set at 125 psi (862 kPa)
on the incoming line between the pressure reducing
valve and the inlet to the booster heater. Discharge
must be to open site drain.
For the most effective operation, install the Hatco Gas Booster
Heater as close as possible to the dishmachine.
NOTE: Employ external recirculation if distance between
booster and dishmachine exceeds the NSF specification
of 5′ (1.5 m).
The Booster Heater must not be installed directly on carpeting,
but on top of a metal, wood (or equivalent) panel extending
beyond the full width and depth of the booster heater by at
least 3(76 mm) in any direction or, if the heater is installed in
an alcove, the entire floor must be covered by the panel. The
panel must be strong enough to carry the weight of the heater
when full of water.
Adequate front clearance is required to allow for accessibility to
the control compartment.
The booster heater should be located in an area where leakage
of the tank or connections will not result in damage to the area
adjacent to the heater or to lower floors of the structure. When
such locations cannot be avoided, it is recommended that a
suitable drain pan, adequately drained, be installed under the
booster heater. The pan must not restrict combustion air flow.

12 Form No. PMG100200M-0918
INSTALLATION
Combustion/Ventilation Air
WARNING
The flow of air to the heater for combustion and ventilation
MUST NOT be obstructed. Air vents on the bottom and side
of the unit should never be blocked. All panels should be
in place during normal operation for optimal performance
and safety.
This unit is designed to vent to the outside or into an open
Equipment Hood, and is intended for commercial food
service water heating only. NOT FOR RESIDENTIAL USE.
See “Venting Installation” in the INSTALLATION section of
this manual.
Flue gases exit top side or back of this unit and must not
be obstructed, specified clearances must be maintained
for safe operation. See “Venting Installation” in the
INSTALLATION section for vent piping alternatives.
CAUTION
The use of cellular core PVC (ASTM F891), cellular core
CPVC, or Radel®(polyphenylsulfone) in nonmetallic venting
systems is prohibited. Covering non-metallic vent pipe and
fittings with thermal insulation is also prohibited.
The booster heater must be located in an area which allows
for an adequate supply of air for proper combustion and
ventilation in accordance with Section 5.3 and 7.2.2 of the
National Fuel Gas Code NFPA54/ANSI Z223.1 or applicable
provisions of the local building codes. Only a single booster
appliance may be installed in this manner. Installations under
the jurisdiction of Canadian CSA-B149.1, Natural Gas and
Propane Installation Code, require a gas interlock tied into
the ventilation hood system.
High Altitude Installation and Operation
Atmospheric conditions at elevations above 2000 ft.
(610 m) have an effect on the performance of most gas fired
products. For this reason, historical models for altitude de-
rating were developed for gas appliances with atmospheric
burners. The National Fuel Gas Code, ANSI Z223.1 is an
accepted model which requires a de-rating of 4% per 1000 ft.
(305 m) elevation when no testing to the contrary exists for
that product. This could require modifying the equipment and
adjusting settings in the field to achieve de-rating. Testing has
shown this to be a very conservative approach.
Manufacturers discourage unnecessary field adjustments in
order to maintain a level of performance and quality designed
into the product. For these and other reasons, testing was
underwritten through CSA International to verify an improved
satisfactory performance with little or no modification to effect
input rate or control. The following text and charts are a result
of this testing and should be used during application sizing and
installation.
• The PMG-100 can operate at better levels than
ANSI Z223.1 without manifold pressure setting adjustments
or orifice changes up to the 8500 ft. (2593 m) elevation for
both natural gas and liquid propane gas units. Above this
level only a slight decrease in manifold pressure may be
needed to meet the approved BTU rate. This is shown in
the Altitude Summary chart. Also, note that GPH capacity
will be reduced and a guideline is given as to the percent
of sea level capacity expected.
For Canadian installations between 2000-4500 feet
(610-1370 m) de-rate unit by 10% to 94,500 BTU.
• The PMG-200 will require orifice changes at levels shown
in the Altitude Summary chart. This follows the 4% de-
rating scheme outlined in ANSI Z223.1 for both natural gas
and liquid propane gas. Also note that the GPH capacity
will be reduced and a guideline is given as to the percent
of sea level capacity expected.
For Canadian installations between 2000-4500 feet
(610-1370 m) de-rate unit by 10% to 175,500 BTU.
Orifice Kits for altitude installations may be ordered through
Hatco Customer Service. Please call for orifice sizing
information.
Floor* Top Left Side Right Side Front Back†

(152 mm)

(25 mm)

(51 mm)

(51 mm)

(508 mm)

(51 mm)
Minimum Clearance Requirements
*Includes legs supplied with booster heater.
†Minimum clearance of 8(203 mm) from the side of the appliance where the vent is installed.

Form No. PMG100200M-0918 13
INSTALLATION
Liquid Propane Gas
*This is the maximum allowable btu rate certified by CSA. These are to be verified by the qualified gas installer on site. Check
Heat Value with local Gas Utility
†The first orifice size is the factory built unit. The next sizes are shown at the altitudes where a change is required to allow
pressure adjustments to the approved input rates.
•This is a de-rate multiplier to use when sizing a gas booster for a given application. Take this value and multiply it by the GPH
found on the Hatco sizing chart to ensure it will provide the capacity you need. You can also use this value by dividing it into
your capacity needs and take the resulting adjusted GPH to the sizing chart to select a gas booster.
Altitude:
Ft. Above Sea Level 0-2000 2001-3000 3001-4000 4001-5000 5001-6000 6001-7000 7001-8000 8001-8500 8501-9500 9501-10500
(Meters) (0-610) (610-915) (915-1220) (1220-1525) (1525-1830) (1830-2135) (2135-2440) (2440-2593) (2593-2898) (2898-3203)
PMG-100 LPG
Approved
Input Rate*105000 102937 100874 98810 96747 94684 92621 91589 87925 84262
Suggested Orifice
Size†#50DMS #50DMS #50DMS #50DMS #50DMS #50DMS #50DMS #50DMS #50DMS #50DMS
GPH Capacity
De-Rate•1 0.98 0.96 0.94 0.92 0.90 0.88 0.87 0.84 0.80
PMG-200 LPG
Approved Input
Rate*195000 171600 163800 156000 148200 140400 132600 128700 123552 118404
Suggested Orifice
Size†#50DMS #51DMS #51DMS #51DMS #51DMS # 52DMS #52DMS #52DMS #53DMS #53DMS
GPH Capacity
De-rate•1 0.88 0.84 0.80 0.76 0.72 0.68 0.66 0.63
0.61
Altitude Summary Publication Data for PMG Booster Water Heaters
Natural Gas
Altitude:
Ft. Above Sea Level 0-2000 2001-3000 3001-4000 4001-5000 5001-6000 6001-7000 7001-8000 8001-8500 8501-9500 9501-10500
(Meters) (0-610) (610-915) (915-1220) (1220-1525) (1525-1830) (1830-2135) (2135-2440) (2440-2593) (2593-2898) (2898-3203)
PMG-100
Approved
Input Rate*105000 103363 101726 100089 98452 96815 95178 94360 90585 86811
Suggested Orifice
Size†#34DMS #34DMS #34DMS #34DMS #34DMS #34DMS #34DMS #34DMS #34DMS #34DMS
GPH Capacity
De-Rate•1 0.98 0.97 0.95 0.94 0.92 0.91 0.90 0.86 0.83
PMG-200
Approved Input
Rate*195000 171600 163800 156000 148200 140400 132600 128700 123552 118404
Suggested Orifice
Size†#35DMS #36DMS #36DMS #37DMS # 37DMS # 38DMS #39DMS #40DMS # 41DMS #42DMS
GPH Capacity
De-rate•1 0.88 0.84 0.80 0.76 0.72 0.68 0.66 0.63 0.61

14 Form No. PMG100200M-0918
INSTALLATION
Plumbing Installation
Components
WARNING
Do not connect booster water heaters to domestic
(consumer) dish machines or other domestic utilized
equipment. This booster may damage domestic equipment.
Do not connect an expansion tank of any type to booster
heater water lines.
Use only copper plumbing material. Non-copper plumbing
material may create an unsafe condition.
CAUTION
Do not connect booster heater directly to a boiler or
furnace coil or any other uncontrolled temperature source.
The booster heater thermostat could be damaged causing
unit to overheat.
NOTE: If a check valve or water backflow protector is installed
and cannot be removed install a back pressure relief
valve, Hatco P/N 03.02.039.00, set at 125 psi (862 kPa)
on the incoming line between the pressure reducing
valve and the inlet to the booster heater. Discharge
must be to open site drain.
Pressure And Temperature Relief Valves
For protection against excessive pressures and temperatures in
the booster heater, install temperature and pressure protective
equipment by local codes. Hatco supplies valves constructed
with brass working parts and heat resistant silicone seat discs
for all booster heater models.
WARNING
Temperature/pressure protective equipment should not be
less than a combination temperature/pressure relief valve
certified by a nationally recognized testing laboratory that
maintains periodic inspection of the production of this
equipment and meets the requirements for Relief Valves and
Automatic Shutoff Devices for Hot Water Supply Systems,
CSA ANSI Z21.22 /CSA 4.4. The temperature/pressure relief
valve must be marked with a minimum set pressure not to
exceed the marked hydrostatic test pressure of the booster
heater as noted on the unit specifications.
Supplied With Unit Optional With Unit Supplied By Installer
Temperature/Pressure Relief Valve Back Pressure Relief Valve 
Blended Phosphate Water Treatment
System
Drain Valve
Pressure Reducing Valve 
Temperature/Pressure Gauge (2) 
Shock Absorber

WARNING
FORINSTALLINGPRESSUREANDTEMPERATURERELIEF
VALVES IN ACCORDANCE WITH CSA ANSI Z21.22/CSA
4.4. Combination pressure and temperature relief valves
with extension thermostats must be installed so that the
temperature-sensing element is immersed in the water
within the top 6″ (152 mm) of the tank. They must be
installed directly in a tank tapping. Combination pressure
and temperature relief valves that do not have extension
elements must be mounted directly in a tank tapping
located within the top 6″ (152 mm) of the tank, and shall
be adequately insulated and located so as to assure
isolation from ambient conditions that are not indicative of
stored water temperature. TO AVOID WATER DAMAGE OR
SCALDING DUE TO VALVE OPERATION, DRAIN PIPE MUST
BE CONNECTED TO VALVE OUTLET AND RUN TO A SAFE
PLACE OF DISPOSAL. Discharge line must be as short
as possible and be the same size as the valve discharge
connection throughout its entire length. Drain line must
pitch downward from the valve and must terminate between
1-1/2″ (38 mm) and 6″ (152 mm) above the floor drain where
any discharge will be clearly visible. The drain line shall
terminate plain, not threaded, with material serviceable
for temperatures up to 250°F (121°C) or greater. Excessive
length, over 30’ (9.1 m), or use of more than four elbows
can cause a restriction and reduce the discharge capacity
of the valve. No shut-off valve shall be installed between
the relief valve and tank, or in the drain line. Valve lever
must be tripped periodically to assure that waterways
are clear. This device is designated for emergency safety
relief and shall not be used as an operating control. The
valves are set to relieve at 150 psi (1034 kPa) or when water
temperature reaches 210°F (99°C). Read tag on valve for
additional information.
CAUTION
BURN HAZARD: Valves supplied by Hatco are designed for
high temperature commercial operation. Do not substitute
Hatco valves with valves designed for domestic water
heaters.
Do not use an anti-siphon or check valves on incoming
water line. Damages caused by the use of these valves on
unit will not be covered by warranty.

Form No. PMG100200M-0918 15
INSTALLATION
Temperature/Pressure Gauges
Hatco requires a temperature/pressure gauge be installed in
both the inlet and outlet lines to the booster heater. These
gauges provide an instant visual check of the water temperature
and pressure entering and leaving the booster heater. The
visual check is helpful in eliminating unnecessary service calls.
Install the temperature sensing bulb in the water system. See
the illustrations below for methods of installation.
CAUTION
Hatco requires that two temperature/pressure gauges
(Hatco P/N 03.01.003.00) be installed to ensure proper
operation. Install one in the supply line before the pressure
reducing valve and one in the outlet line as close to the
booster heater as possible. This provides a visual check
of the water temperature and pressure before and after the
water heater.
Pressure Reducing Valve
Proper operation of most dishmachine rinse nozzles require
available water flow pressure at the nozzle to be 20 psi.
If water pressure available to the booster heater inlet is over 20
psi, a pressure reducing valve with bypass must be installed in
the hot water supply line to the booster heater.
The valve supplied by Hatco has a built-in high pressure bypass
which prevents excessive pressure build-up as the booster
heats up. CAUTION! Pressure regulating valve must have a
built-in high pressure bypass.
Blended Phosphate Water Treatment System
Hatco requires that the Blended Phosphate Water Treatment
System supplied be installed with unions on the incoming 3/4”
water supply line after the pressure reducing valve and before
the booster heater.
Cartridges supplied have a usage rating of 100,000 gallons
of water. To ensure proper operation the cartridges must be
replaced when expired.
NOTE: Product failure caused by liming or sediment buildup is
not covered under warranty.
NOTE: The Commonwealth of Massachusetts requires that if a
water treatment system is installed in line with the Hatco
Booster Heaters, a water backflow protector shall also
be installed.
NOTE: If a check valve or water backflow protector is installed
and cannot be removed install a back pressure relief
valve, Hatco part number 03.02.039.00, set at 125 psi
(862 kPa) on the incoming line between the pressure
reducing valve and the inlet to the booster heater.
Discharge must be to open site drain.

16 Form No. PMG100200M-0918
INSTALLATION
Plumbing Connections
NOTICE
Incoming water supply to booster heater must be a
minimum of 20 psi (1.4 kg/cm2). Water pressure less than
20 psi (1.4 kg/cm2) will decrease operating life of
recirculating pump and unit.
NOTE: Product failure caused by incoming water pressure less
than 20 psi (1.4 kg/cm2) is not covered under warranty
Do not back out or loosen any pipe fittings or leaks may
occur.
Incoming water in excess of 3 grains of hardness per
gallon (GPG) (0.75 grains of hardness per liter [GPL]) must
be treated and softened before being supplied to booster
heater(s). Water containing over 3 GPG (0.75 GPL) will
decrease efficiency, increase energy use, and reduce the
operating life of the unit through increased lime build-up.
Product failure caused by liming or sediment buildup is not
covered under warranty.
Inlet
Hatco Booster Water Heaters are designed to be connected
with 3/4” pipe at the inlet pipe from the primary water heater.
Water temperature from the primary water heater must be
at least 110°F (43°C) and should not exceed 160°F (71°C).
Minimum temperature differential between the inlet and outlet
temperature must never be less than 20°F (11°C).
NOTE: Refer to “Booster Heater Sizing Chart” for application
information.
Inlet line must be installed with a shut-off valve, a full open
gate or ball type valve, a 3/4union, together with the blended
phosphate water treatment system, pressure reducing valve
set at 20 psi (1.4 kg/cm2) flow pressure and a temperature/
pressure gauge supplied by Hatco.
NOTE: Do not run a cold ground water line to the Booster
Heater.
NOTE: Be sure water flows through the pressure reducing valve
in the proper direction. Check the directional arrow.
Valve will reduce pressure only during flow conditions.
A 3/4” union fitting and a drain valve must also be installed to
allow for easy servicing.
The temperature/pressure relief valve must be installed into one
of two locations on the heater: either the right side or the back of
the unit. See the “Plumbing Connections” illustrations for exact
locations.
To prevent water leakage and damage to the unit, the location
for the temperature/pressure relief valve that is not used must
be plugged. (One plug is supplied by Hatco with the heater.)
Both temperature/pressure fittings must not be plugged.
NOTE: The Commonwealth of Massachusetts requires that if a
water treatment system is installed in line with the Hatco
Booster Heaters, a water backflow protector shall also
be installed.
Outlet
Using a 3/4” union and piping, connect the booster heater water
outlet to the dishmachine sanitizing rinse pipe connection.
NOTE: Be certain the connection is made to the final rinse and
not to the wash tank.
Install a temperature/pressure gauge in outlet line. Water
temperature at outlet should be 180°F (82°C).
NOTE: The temperature sensing element must be in water
stream.
Shock Absorber
In areas of high water pressure, Hatco recommends a shock
absorber be installed in the outlet line as close as possible
to the dishmachine. The shock absorber softens the water
hammer caused by automatic dishmachine valves.
NOTE: Fill booster heater with water to test for installation leaks.
Leave the water in booster to prevent pump damage in
the event the electrician should apply power.

Form No. PMG100200M-0918 17
INSTALLATION
Plumbing Connections—PMG-100/200 Gas Booster Water Heaters
*Not Supplied With Booster Heater
•Optional Accessory
Plumbing Connections—PMG-100/200 Gas Booster Water Heaters Connected in Series

18 Form No. PMG100200M-0918
INSTALLATION
Gas Installation
Components
Supplied With Unit Optional With Unit Supplied By Installer
Internal Gas Valve (installed) None Gas Supply Line
External Gas Shut-Off Valve (loose) Sediment Trap
Union
Vent System
WARNING
FIRE OR EXPLOSION HAZARD:
• The gas used with this unit must be the type specified
on the spec plate on this unit. To avoid personal injury
or damage to the unit, never use any other than the
specified gas.
• The heater and its gas connection must be leak tested
before placing the booster heater in operation. Use
soapy water or commercially available fluid for leak
test. DO NOT use open flame to test for leaks.
• The booster heater and its individual shut-off valve
must be disconnected and isolated from the gas
supply piping system during any pressure testing
of the system at test pressures in excess of 1/2 psi
(3.5 kPa.).
• This appliance must be isolated from the gas supply
piping system by closing its individual manual shutoff
valve during any pressure testing of the gas supply piping
system at test pressures equal to or less than 1/2 psig
(3.5 kPa).
• Dissipate test pressure from the gas supply line before
re-connecting the heater and its manual shut-off cock to
the gas supply line. Failure to follow this procedure may
damage the gas valve. Over-pressurized gas valves are
not covered by the warranty.
• If the information in these instructions is not followed
exactly, fire or explosion may result causing property
damage, personal injury, or death.
Gas Piping
CAUTION
DO NOT use Teflon tape on gas line pipe threads. A flexible
sealant suitable for use with applied gas is recommended.
The gas inlet pipe size is 3/4NPT pipe thread fitting to the gas
valve. Provide an adequate size gas supply line. The line should
never be smaller than 3/4NPT and should follow according to
the gas piping diagram below. The fitting is accessed through
the bottom of the case.
NOTE: Gas line should be of the approved type for use with
natural gas or propane.
Gas line should be kept as short as possible, sized to furnish
the rated BTU, and installed in a way to protect it from damage.
Gas piping must be installed in accordance with local plumbing
codes including a sediment trap, ahead of the heater gas
controls and a manual shut-off valve located outside the jacket.
NOTE: The internal gas valve is supplied with the heater, the
external manual gas valve supplied with unit must be
plumbed in by the installer.
Incoming Gas Pressure Specifications
Gas Type
Inches Water Column
Minimum Maximum
Natural Gas 5.0 10.5
Propane/LP Gas 11.0 13.0
The maximum inlet gas pressure must not exceed the values
shown above. The minimum gas pressure listed is for the
purposes of input adjustment.
The manifold inside the heater is provided with a pressure tap
to measure the gas pressure. The chart below lists the proper
pressure amounts at the manifold pressure tap when testing.
Operating Pressure Specifications at Manifold
Gas Type
Inches Water Column at Pressure Tap
High Burn
Natural Gas 3.5
Propane/LP Gas 10.0
See Gas Installation Diagram illustration for hook-up location
and pressure tap location.

Form No. PMG100200M-0918 19
INSTALLATION
Gas Installation Diagram
Electrical Installation
Components
Supplied With Unit Optional With Unit Supplied By Installer
 None 120 VAC, 60 Hz, 15 A,
Single Phase Service
Electrical Ground
WARNING
ELECTRIC SHOCK HAZARD:
• Unit must be installed by qualified, trained installers.
Installation must conform to all local electrical codes.
Installation by unqualified personnel will void the unit
warranty and may lead to electric shock or burn, as well
as damage to unit and/or its surroundings. Check with
local electrical inspectors for proper procedures and
codes.
• If an external electrical source is utilized, the appliance,
when installed, must be electrically grounded in
accordance with local codes, or, in the absence of local
codes, with the National Electrical Code, ANSI/NFPA 70,
and CSA C22.1, Electrical Code.
CAUTION
DO NOT turn on power to the booster heater until tank has
been filled with water and all air has been vented through
the dish machine rinse nozzles. Heating elements will burn
out in seconds if operated when not immersed in water.
The Hatco Gas Booster Heater operates on 120 VAC, 60 Hz,
15 amp, single phase service. All internal electrical connections
have been made at the factory.
Electrical Connections
To connect the field wiring to the booster heater:
1. Remove the front access panel from the unit by lifting up on
the front panel and pulling upper edge away from unit until
it clears the lower edge.
2. Open electrical enclosure at the lower left corner of the
base by removing two screws.
3. Bring power leads from a properly sized fused disconnect
        
lower left hand side or bottom of base. Connect supply
lines to terminal block provided. Use copper wire only.
Stripped Wire
Terminal
Block
Screwdriver
a. Rotate screwdriver into
top opening.
b. Insert 3/8” stripped wire
lead.
c. Remove screwdriver.
4. A green grounding terminal
is provided internally. An
equipment grounding
conductor must be properly
connected to the green
terminal block.

20 Form No. PMG100200M-0918
INSTALLATION
Venting Installation
The PMG-100 and PMG-200 may be vented by two methods,
both of which have been tested for compliance with national
safety standards for gas water heaters. Whichever method
is used must comply with local codes. The installation of
the venting system must comply with local codes and in the
absence of local codes, in accordance with the National Fuel
Gas Code and the guidelines in this manual. Before installing
any method of venting, contact the local code authority of
your gas supplier to make sure that the final installation
will be acceptable to the authorities having jurisdiction.
The proper method of venting a power vented gas appliance
is too complicated to cover in this manual and is explained
in detail in the National Fuel Gas Code. Before installing the
venting system, the person or agency making the installation
must be familiar and experienced with the guidelines of the
National Fuel Gas Code.
The temperature of the flue gases from this booster water
heater operates at approximately 225°F to 275°F (107°C to
135°C).
The two methods that have been tested for compliance with the
national safety standards are:
  
(102 mm) diameter, AL 29-4C1 stainless steel vent pipe.
Use only Duravent “FasNSeal” products currently listed
by a nationally recognized testing agency for category
III venting. The maximum combined horizontal vent
length must not exceed a length of 40 feet (12 m) [each
sweep elbow is the equivalent of 5′ (1.5 m) of straight
pipe and a standard right elbow is the equivalent of 10′
(3 m)]. The venting may be done in such a way that the
exhaust products are:
a. Conveyed to another area in the kitchen such as under a
ventilator or near an exhaust fan (both of which exhaust
outdoors).
When using this method the booster water heater must
be electrically interlocked with the vent hood to prevent
operation if the vent hood is not operating.
The termination end must be placed so that it vents
above the bottom of the hood skirt. Do not penetrate the
filter with the vent.
b. Horizontally vented through an outside wall directly to
the outdoors. See additional instructions below. (See
Figure 9.)
c. Exhausted into a vertical masonry chimney that has
a listed steel liner installed in the chimney. Locate
appliance as close as practicable to a chimney or gas
vent. Because of the low flue gas temperature, do not
vent into an unlined or masonry lined chimney designed
to burn solid fuel. Note that all venting into a vertical
chimney of any type must comply with the horizontal and
vertical ratios and sizing requirements that are detailed
in the National Fuel Gas Code.
d. For Model PMG-100 only: Vented vertically using type

termination above the roof uses a listed wind cap.
1 AL 29-4C is a Registered Trademark of Allegheny Ludlum Corp.
Venting Through Typical Exhaust System
2. The second method of venting is to directly exhaust the
flue products into the kitchen work area provided the size
and installation of the open room meet the requirements of
the National Fuel Gas Code [ANSI Z223.1 or NFPA bulletin
#54]. A portion of the 1996 code is as follows.
Excerpt From ANSIZ223.1/NFPA #54
7.2.1 Connection To Venting Systems. Excerpt as
permitted in 7.2.2 through 7.2.6, all gas utilization equipment
shall be connected to venting systems.
7.2.2 Equipment Not Required To Be Vented. A single
booster-type [automatic instantaneous] water heater, when
designed and used s rinse requirements of a dishmachine,
provided that the equipment is installed, with the draft hood in
place and unaltered, if a draft hood is required in a commercial
kitchen having a mechanical exhaust system. Where installed
in this manner, the draft hood shall not be less than 36(91
cm) vertically and 6(15 cm) horizontally from any surface
other than the equipment.
Where any or all of this equipment is installed so the
aggregate input rating exceeds 20 BTU per hr per cu ft
(207 watts per m3) of room space in which it is installed, one or
more shall be provided with venting systems or other approved
means for removing the vent gases to the outside atmosphere
so the aggregate input rating of the remaining unvented
equipment does not exceed the 20 BTU per hr per cu ft
(207 watts per m3) figure. Where the room or space in which
the equipment is installed is directly connected to another
room or space by a doorway, archway, or other opening
of comparable size that cannot be closed, the volume of
adjacent room or space shall be permitted to be included in
the calculation.