Watts Aerco AM Series Manual

Other documents for this product include:
TAG-0072 GF-146-E Electrical Power Guide
TAG-0073 GF-146-G Gas Supply Guide
TAG-0074 GF-146-P Piping Application Guide
TAG-0075 GF-146-V Venting Guide
IMPORTANT!
This manual MUST be used in conjunction with User
Manual GF-146 for the startup, operation, and
maintenance of the AM Series Boiler used in the pool
heating system.
.
Disclaimer
The information contained in this manual is subject to change without notice
from AERCO International, Inc. AERCO makes no warranty of any kind with
respect to this material, including, but not limited to, implied warranties of
merchantability and fitness for a particular application. AERCO International is
not liable for errors appearing in this manual, not for incidental or consequential
damages occurring in connection with the furnishing, performance, or use of
these materials
OMM-0111_B: •GF-146-P •10/29/2019
Operation & Maintenance Manual
AM Series Pool Heater
Natural Gas and Propane Gas
Modulating Condensing Pool
Heating System
•AM 399P
•AM 500P
•AM 750P
•AM 1000P

AM Series Pool Heater User Manual
TABLE OF CONTENTS
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Table of Contents
FOREWORD ..................................................................................................................... 4
SECTION 1: GENERAL INFORMATION ............................................................................ 5
1.1 WARNINGS & CAUTIONS...........................................................................................................................5
1.2 EMERGENCY SHUTDOWN........................................................................................................................8
SECTION 2: FUNCTION & SPECIFICATIONS .................................................................. 9
2.1 INTRODUCTION..........................................................................................................................................9
2.2 SPECIFICATIONS......................................................................................................................................10
2.2.1 Boiler - Burner Modules, Efficiency, Flow Rate, and Water Connections ............................................................10
2.2.2 Boiler - Exhaust Manifold, Condensate Trap, and Condensate Neutralizer .........................................................10
2.2.3 AM Pool Heater Supply and Return Piping Dimensions .......................................................................................10
2.3 BOILER CONTROLS .................................................................................................................................13
2.3.1 Temperature Control Modes................................................................................................................................13
2.4 CONTROLS INTEROPERABILITY............................................................................................................14
SECTION 3: INSTALLATION –SITE............................................................................... 16
3.1 CHOOSING THE INSTALLATION LOCATION..........................................................................................16
3.2 BOILER AND WATER HEATER INSTALLATION LOCATION FACTORS................................................17
3.3 SAFETY CONCERNS................................................................................................................................17
3.4 CLOSET AND ALCOVE INSTALLATION ..................................................................................................17
3.5 CLEARANCES FOR INSTALLATION AND SERVICING ..........................................................................17
3.6 CLEARANCES TO COMBUSTIBLE MATERIAL.......................................................................................19
3.7 TRANSPORTING THE AM SERIES POOL HEATER ...............................................................................19
SECTION 4: INSTALLATION –VENT AND AIR .............................................................. 22
4.1 VENT AND COMBUSTION AIR PIPING....................................................................................................22
4.2 PREVENTION OF COMBUSTION AIR CONTAMINATION ......................................................................22
SECTION 5: INSTALLATION –PIPING........................................................................... 24
5.1 BOILER WATER INLET AND OUTLET PIPING........................................................................................24
5.2 WATER QUALITY ......................................................................................................................................24
5.3 SYSTEM PIPING METHODS.....................................................................................................................24
5.4 FREEZE PROTECTION.............................................................................................................................25
5.5 SAFETY RELIEF VALVE ...........................................................................................................................26
5.6 CONDENSATE DISPOSAL........................................................................................................................27
5.7 POOL WATER PIPING REQUIREMENTS ................................................................................................28
5.8 POOL WATER CONNECTIONS TO THE HEAT EXCHANGER...............................................................28
5.9 PIPING METHODS - FULL FLOW OR BYPASS FLOW............................................................................29
5.9.1 Full Flow Piping Method .......................................................................................................................................29
5.9.2 Bypass Flow Piping Method..................................................................................................................................30
SECTION 6: INSTALLATION –NATURAL GAS .............................................................. 32
6.1 GAS SUPPLY PIPING................................................................................................................................32
6.2 NATURAL GAS PRESSURE REQUIREMENTS.......................................................................................32
6.3 CONNECTION OF GAS SUPPLY PIPING ................................................................................................33
6.4 NATURAL GAS PIPE SIZING....................................................................................................................34
6.5 NATURAL GAS SUPPLY PRESSURE REQUIREMENTS........................................................................34
6.6 PROPANE GAS PIPE SIZING...................................................................................................................34
6.7 PROPANE GAS SUPPLY PRESSURE REQUIREMENTS.......................................................................34
6.8 CHECKING AND ADJUSTING THE UNIT INLET GAS SUPPLY PRESSURE.........................................35
6.9 HIGH ALTITUDE OPERATION..................................................................................................................35
6.10 CONVERSION FROM NATURAL GAS TO PROPANE GAS..................................................................35
6.10.1 Gas Conversion Kit..............................................................................................................................................35

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6.10.2 Gas Conversion Instructions...............................................................................................................................35
SECTION 7: INSTALLATION - ELECTRICAL .................................................................. 36
7.1 ELECTRICAL CONNECTIONS –BOILER ................................................................................................36
7.1.1 Power Supply Cable Connection...........................................................................................................................36
7.1.2 Connecting Units in Cascade ...............................................................................................................................38
7.1.3 0-10 VDC Input Connections.................................................................................................................................38
7.1.4 MODBUS Interface Connections –Boilers and Water Heaters ............................................................................38
7.2 ELECTRICAL CONNECTIONS –BOILERS ONLY...................................................................................39
7.2.1 Pool Flow Switch Connections..............................................................................................................................39
7.2.2 Pool Water High Limit Switch Connections ..........................................................................................................40
SECTION 8: UNIT STARTUP.......................................................................................... 40
SECTION 9: OPERATION ............................................................................................... 40
SECTION 10: BOILER MAINTENANCE ............................................................................ 40
SECTION 11: BOILER TECHNICAL DATA........................................................................ 41
SECTION 12: BOILER PARTS DRAWINGS & LISTS......................................................... 41
SECTION 13: SYSTEM PART DRAWINGS AND LISTS ..................................................... 42
13.1 AM 399P/500P POOL HEATING SYSTEM PARTS DRAWING AND LIST ............................................42
13.2 AM 750P/1000P POOL HEATING SYSTEM PARTS DRAWING AND LIST ..........................................44
AM SERIES POOL HEATER WARRANTY: .......................................................................... 46

AM Series Pool Heater User Manual
FORWARD
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FOREWORD
The Advanced Modular (AM) Series Pool Heating system represents the latest in high
efficiency pool heating applications. The AM Series Pool Heaters are comprised of an AERCO
AM Series boiler, shell and tube heat exchanger, pump, expansion tank, air vent, and fittings for
makeup water connections, all factory configured and installed on a skid. The AM Series boiler
used in these systems features a unique modular design that provides exceptional reliability,
serviceability, and fuel savings from 399 to 1000 MBTU. Each boiler is comprised of between
two and four independent thermal modules firing up to 250 MBTU, and as low as 50 MBTU. This
allows for superior temperature control and low-cycling operation. High efficiencies and low vent
temperatures mean the unit can be vented in PVC, CPVC, Polypropylene, and AL29-4C vent
materials. The front-access design of the boiler also means the unit is very simple to maintain and
service.
AM Series Boiler Features:
•High Efficiency Condensing Boiler
•Natural Gas or Propane
•Superior Turndown 8:1 to 20:1 (depending on unit)
•Low NOx Emission <20ppm
•Direct or Conventional Vent with PVC, CPVC, Polypropylene, or AL29-4C materials
•Concentric Vent Capability
•Common Vent Capability
•Side wall common venting with no additional check valve
•Small, Doorway-Size Footprint
•Superior Reliability
•Minimal Maintenance
•Easy Front Access for Serviceability
•Zero Side Clearance
•Supports Integration to BAS System
•Modbus Communication Standard
•Integrated isolation valves, flow meters, and condensate neutralizer
AM Series Pool Heater Features:
•Circulation pump: the pump circulates water through the piping loop, as well as the boiler and
heat exchanger.
•Low Water Cut-Off: An LWCO is provided to prevent boiler operation in case of insufficient
boiler water flow.
•Expansion tank: A rugged diaphragm type expansion tank protects the boiler water piping loop
from excessive pressure and keep the pressure below relief valve setting.
•Air vent: The boiler is provided with an air vent to automatically purge the unwanted air in the
closed boiler water loop.
•Makeup water connections: Connections are provided for the inlet of makeup water to the
boiler water loop for fast fill and to contain the pressure reducing fill valve, as well as the shutoff
valve.
•Factory Configuration: All components are piped together and secured to a carbon steel
support base for ease of handling and installation.

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SECTION 1: GENERAL INFORMATION
1.1 Warnings & Cautions
NOTE:
This manual provides installation instructions for the AM Series Pool Heaters, but does NOT
provide information for venting, system start-up, operation, or maintenance of the boiler used
in the system. The AM Series User Manual, GF-146, is required for that information, and the
reader will be referred to the necessary sections in that document when necessary.
In addition to all the requirements included in this AERCO Instruction Manual, the installation of
units MUST conform with local building codes, or, in the absence of local codes, ANSI Z223.1
(National Fuel Gas Code Publication No. NFPA-54) for gas-fired boilers and ANSI/NFPASB for
LP gas-fired boilers. Where applicable, the equipment shall be installed in accordance with the
current Installation Code for Gas Burning Appliances and Equipment, CSA B149.1, and
applicable Provincial regulations for the class; which should be carefully followed in all cases.
Authorities having jurisdiction should be consulted before installations are made.
IMPORTANT!
This Instruction Manual is an integral part of the product and must be maintained in legible
condition. It must be given to the user by the installer and kept in a safe place for future
reference.
WARNING!
Failure to comply with provisions, warnings, and cautions provided in this manual can lead to
extensive property damage and/or personal injury or death.
In the event of a breakdown and/or malfunction of the boiler used in this system, turn off the unit
and do not make any attempt to repair it. The boiler must be serviced exclusively by a Qualified
installer using original spare parts. Failure to comply with this requirement may compromise the
safety of the unit.
WARNING!
Installer: Read all instructions including this manual, before installing. Perform steps in the
order given.
User: The installation and maintenance sections of this manual are for use only by a qualified
heating installer. Refer to Chapter 9: Operation for user information.
Installation and Alterations: Only a Qualified installer must carry out the installation and
calibration of the boiler. Never modify the boiler or its components in any way.
Overheating: Should overheating occur or the gas supply fail, turn off the manual gas shut-
off valve external to the appliance. Do NOT turn off or disconnect the electrical supply to the
circulator.
Water Contamination: Do not use this appliance if any part has been under water.
Immediately call a licensed authorized technician to inspect the appliance and to replace any
part of the control system and any gas control, which has been under water.
Ensure the boiler and its controls are protected from dripping or spraying water during normal
operation or service.
Spare Parts: Only use the boiler with the accessories and spares listed in this manual.
Failure to do so can cause equipment damage or dangerous conditions.

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NOTE:
When calling or writing about the AM Series Pool Heating system, have the unit model and
serial number as seen on the unit rating plate located on the boiler.
CAUTION!
Do not use petroleum-based cleaning or sealing compounds in the boiler system. Gaskets and
seals in the system may be damaged. This can result in substantial property damage.
The manufacturer declines all liability, contractual or otherwise (warranty included), for any
damage to people, animals property or this same appliance, caused by:
•Incorrect installation or failure to comply with this or any other instruction provided by the
manufacturer;
•Failure to comply with the applicable local and/or national regulations in force.
•Incorrect use of this appliance.
•Inadequate or incorrect service
•Inadequate or incorrect maintenance.

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OFF.
OFF.

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1.2 Emergency Shutdown
If overheating occurs or the gas supply fails to shut off, close the manual gas shutoff valve (Figure
1-1) located external to the unit.
NOTE:
The Installer must identify and indicate the location of the emergency shutdown manual gas
valve to operating personnel.
Figure 1-1: Manual Gas Shutoff Valve
IMPORTANT! FOR MASSACHUSETTS INSTALLATIONS:
Boiler Installations within the Commonwealth of Massachusetts must conform to the following
requirements:
•Boiler must be installed by a plumber or a gas fitter who is licensed within the
Commonwealth of Massachusetts.
•Prior to unit operation, the complete gas train and all connections must be leak tested using
a non-corrosive soap.
•The vent termination must be located a minimum of 4 feet above grade level. If side-wall
venting is used, the installation must conform to the requirements in 248 CMR 5.08 (2).
•Must be installed according to all local codes.

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SECTION 2: FUNCTION & SPECIFICATIONS
2.1 INTRODUCTION
REFERENCE NOTE:
This manual provides installation instructions for the AM Series Pool Heaters, but not
documentation for all features, such as venting, start-up, operation, or maintenance of the
boiler used in the system. For that information, refer to the AM Series User Manual, GF-146.
Figure 2-1 shows the exterior appearance of an AM Series Pool heating system as it comes
factory configured and installed on a skid. The AM Series Pool Heater comes in four functionally
sized models; the 399, 500, 750, and 1000. Figure 2-2 shows the boilers available.
Figure 2-1: AM Series Pool Heating System (AM 750P / 1000P Shown)
Figure 2-2: Boiler Models Used in AM Series Pool Heating Systems
AM 750P or AM 1000P
BOILER
PRESSURE
REDUCING
FILL VALVE
LWCO SWITCH
EXPANSION TANK
PUMP
FLUE OUTLET
OUTLET TO POOL
INLET FROM POOL OR SKIMMER
HEAT EXCHANGER
AM BOILER
SKID
AM 399P or AM 500P
BOILER
CONTROL
PANEL
AIR VENT
AIR INLET
GAS INLET
RETURN WATER
TEMPERATURE
SENSOR

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2.2 Specifications
2.2.1 Boiler - Burner Modules, Efficiency, Flow Rate, and Water Connections
Each AM Series pool heating system includes a boiler featuring from 2 to 4 thermal modules,
depending on model, performing total turn down ratios without loss of combustion efficiency as
shown in the table below. Each thermal module’s premix burner is a metal fiber mesh covering a
stainless steel head, with spark ignition and flame rectification. All burner materials exposed to
the combustion zone are of stainless steel construction. There are no moving parts within the
burner itself. The burners produce <20 ppm of NOx corrected to 3% excess oxygen. A modulating
gas valve, and variable speed fan, meter the natural gas and air input, respectively.
Each module has a dedicated isolation valve on the inlet side of the module on the rear of the
unit. The table below shows the pool flow rates for each model, as well as the water connection
sizes.
AM Series Pool Heating System General Specifications
Model
# Modules
Turndown
Ratio
Pool Water
Maximum Flowrate
Connection Pool
Side
AM 399P
2
8:1
127 GPM
3 inches NPT
AM 500P
2
10:1
127 GPM
3 inches NPT
AM 750P
3
15:1
222 GPM
3 inches Flg ANSI 150
AM 1000P
4
20:1
222 GPM
3 inches Flg ANSI 150
2.2.2 Boiler - Exhaust Manifold, Condensate Trap, and Condensate Neutralizer
NOTE:
Refer to Section 5.6 of this document for detailed information concerning the condensate trap
and neutralizer tank installation and maintenance.
2.2.3 AM Pool Heater Supply and Return Piping Dimensions
Connections and dimensions for AM Series pool heaters are shown in Figure 2-3a and 2-3b
over the following pages.

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Figure 2-3a: AM 399P/500P Pool Heater Connection Dimensions
NOTE:
These drawings and/or dimensions are subject to change. Please refer to latest drawings
revisions on the AERCO website.

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Figure 2-3b: AM 750P/1000P Pool Heater Connection Dimensions
NOTE:
These drawings and/or dimensions are subject to change. Please refer to latest drawings
revisions on the AERCO website.

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2.3 Boiler Controls
AM Series pool heater units must be controlled in one of two ways: either through an external
AERCO controller, or be controlled through a Building Automation System (BAS). The boiler is
comprised of an internal controller coordinating individual thermal module controllers linked as
slaves, and these controls are fully field adjustable while the boiler is in operation by either the
external controller or the BAS. The boiler features an LCD display for monitoring of all sensors
and interlocks. Each of the thermal module controllers consists of a combustion safeguard and
flame monitoring system. Individual thermal module controllers are field replaceable. The
combustion safeguard/flame monitoring system utilizes spark ignition and a rectification type
flame sensor. The boiler control system reports and displays boiler & sensor status and includes
extensive self-diagnostic capabilities.
Each boiler incorporates dual over-temperature protection with manual reset and low water cut
out, both in accordance with ASME Section IV and CSD-1.
2.3.1 Temperature Control Modes
During boiler operation, the individual thermal module controllers vary their respective thermal
module’s input throughout its full range to maximize the condensing capability of the boiler, and
operates with an Inverse Efficiency Curve, with known Part Load Value Efficiencies. There are
five (5) modes in which the AM boiler may be set, each one adjusting this performance according
to specific requirements.
The AM Series boiler(s) operates in the control modes listed below:
•Internal Setpoint
•Indoor/Outdoor Reset
•0 to 10VDC Temperature Setpoint
•Network Temperature Setpoint
A description of each selectable control mode follows:
•Internal Setpoint:
In this mode, the control of discharge water temperature is set through an internal setpoint
with an adjustment of between 68ºF to 189ºF. The individual thermal module controllers vary
their respective thermal module’s input throughout its full range to maximize the condensing
capability of the water heater. The boiler operates to maintain a constant pool water
temperature.
•Indoor/Outdoor Reset:
In this mode, the boiler operates to vary pool water temperature setpoint on an inverse ratio
in response to outdoor temperature (measured by an external temperature sensor) to control
pool water temperature. The individual thermal module controllers vary their respective
thermal module’s input throughout its full range to maximize the condensing capability of the
boiler.
•0VDC to 10VDC Temperature Setpoint:
In this mode, the boiler operates to vary pool water temperature setpoint linearly as an
externally applied 0 VDC to 10 VDC signal is supplied to the E8 Controller.
•Network Temperature Setpoint:
In this mode, the boiler will operate to vary pool heater temperature setpoint as an external
communication utilizing the MODBUS protocol is supplied to the boiler’s communications
module via the RS-485 port.

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2.4 Controls Interoperability
The communications module utilizes the MODBUS open protocol to interface with third party
Building Automation Systems (BAS).
The controls interface with BACnet, Lonworks, and N2, shall utilize an optional AERCO
Communications Gateway to act as a MODBUS interface/translator between the BAS the
communications.The AERCO Communications Gateway is comprisedofa microprocessorbased
control utilizing the MODBUS protocol to communicate with the boilers. Non-volatile backup of
all point mappings and programs are internally provided as standard. Connection between
Gateway and individual boilers shall be “daisy chain” with shielded, twisted-pair, and low voltage
wiring for ease of installation.

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(This Page Is Intentionally Blank)

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SECTION 3: INSTALLATION – SITE
3.1 Choosing the Installation Location
This section describes the general installation considerations for the AM Series Pool Heaters.
WARNING!
Provisions for combustion air and ventilation of the boiler room arealways required, regardless
whether thecombustionair is takenfrom theoutside (Direct Vent, sealedcombustion) or inside
(room air for combustion). Insufficient ventilation of the boiler room can lead to high air
temperatures. Make sure that intake and exhaust openings are sufficiently sized and no
reduction or closure of openings takes place. If these are not provided, do not operate the
boiler.
WARNING!
LIQUEFIED PETROLEUM (L.P.) PROPANE GAS-FIRED BOILER LOCATION REQUIRES
SPECIAL ATTENTION: 1994 UNIFORM MECHANICAL CODE, section 304.6: “LPG
Appliances. Liquefied petroleum gas-burning appliances shall not be installed in a pit,
basement or similar location where heavier-than-air-gas might collect. Appliances so fueled
shall not be installed in an above grade under-floor space or basement unless such location is
provided with an approved means for removal of unburned gas.”
This appliance is not designed for direct outdoor installation. If installed outside of the structure,
it must be sheltered so it is protected from rain, wind, sun and frost. NEVER place this appliance
in a location that would subject it to temperatures at or near freezing or excessively high
temperature. Failure to properly locate this unit can result in premature failure.
The boiler must NOT be installed on carpeting.
This appliance must be installed in a location so that any water leaking from the unit or piping
connections or relief valve openings will not cause damage to the area surrounding the unit or
any lower floors in the structure. When such locations cannot be avoided, it is recommended that
a suitable drain pan, adequately drained, be installed under the boiler. The pan must not restrict
combustion air flow.
When installed in a room with thin flooring, resonating noises may occur. Install noise reducing
parts if required.
Do not allow excessive dust to collect on the appliance.
WARNING!
Do not store or use gasoline or other flammable vapors or liquids in the vicinity of this or
any other appliance.
WHAT TO DO IF YOU SMELL GAS:
• Donot try to light any appliance.
• Donot touch any electricalswitch.
• Donot use any phone in the building.
• Immediately call your gas supplier from a neighbor’s phone. Follow the gas
supplier’s instructions.
• If you cannot contact your gas supplier, call the fire department.

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3.2 Boiler and Water Heater Installation Location Factors
When locating the boiler or water heater, the following factors must be considered:
•location of vent/air intakes;
•connection to the gas supply;
•connection to the water supply;
•connection to the pool system;
•connection to the electrical supply;
•disposal of the condensation produced by the boiler;
•connection to the room thermostat, building automation system, or equivalent device;
•piping of the safety relief valve discharge;
•connection of the outdoor temperature sensor;
•If flooding is possible, elevate the boiler sufficiently to prevent water from reaching the unit;
3.3 Safety Concerns
WARNING!
Do not store any flammable materials or liquids in the immediate vicinity of the boiler.
3.4 Closet and Alcove Installation
This heater is approved for the installation in an alcove or closet, within compliance of the
guidelines pertaining to clearance, venting and ventilation openings as per this manual and the
National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or CAN/CSA B149.1, Natural Gas and
Propane Installation Code.
WARNING!
Do not use PVC/CPVS/Polypropylene exhaust pipe material into a closet or alcove. The only
exhaust pipe material accepted is stainless steel. Failure to follow this warning can result in
excessive levels of carbon monoxide or a fire, which cancause severe personalinjury or death.
3.5 Clearances for Installation and Servicing
The following are the minimum clearances required for installation and servicing of an AM Series
pool heater. See also Figures 3-1a and 3-1b.
•32 inches from front of boiler.
•24 inches on both left and right sides.
•12 inches from rear of skid or per piping configuration of the heat exchanger.

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Figure 3-1a: Recommended Minimum Service Clearances (AM 399 / AM 500)
Figure 3-1b: Recommended Minimum Service Clearances (AM 750 / AM 1000)
32”
20”
REAR
FRONT
Or per piping of
Heat Exchanger
24”
24”
12”
24”
24”
12”
32”
20”
REAR
FRONT
Or per piping of
Heat Exchanger
TOP VIEW
TOP VIEW
SIDE VIEW
SIDE VIEW

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NOTE:
Service clearances are minimum required clearances for ease of access, but larger service
clearances are always preferred.
3.6 Clearances to Combustible Material
This unit may be installed directly onto a floor of combustible material with the following
clearances:
Table 3-1: Unit Installation Clearance Dimensions
Component
Clearance Distance
Ceiling
2 inches (51 mm)
Front
2 inches (51 mm)
Rear
2 inches (51 mm)
Sides
2 inches (51 mm)
Floor
0 inches (0 mm)
Concentric vent
0 inches (0 mm)
Split vent (two pipes) first 3 feet from the boiler
1 inch (25 mm)
Split vent (two pipes) after 3 feet from the boiler
0 inches (0 mm)
Boiler piping
¼ inch (7 mm)
WARNING!
All aspects of installation of the Pool Heater Plant must be in strict accordance with
manufacturer's instructions. The vent system must conform to all manufacturer’s
recommendations and shall utilize UL listed stainless steel AL-29-4C, Polypropylene, PVC, or
CPVC Positive Pressure venting materials. The vent must be sized in accordance with
AERCO’s recommendations.
3.7 Transporting the AM Series Pool Heater
After removing the shipping carton from the unit, ensure the following when transporting the unit
to the installation location.
•Only transport the unit using the right transportation equipment, such as a hand truck with a
fastening belt.
•During transportation, the unit must be secured on the transportation equipment to prevent it
from falling off.
•Protect all parts against impacts during transport.
•Observe the transportation markings on the packaging.
•Leave the protective covers on the connections until ready to install.
•During transportation, cover the flue gas and air intake connections at the top of the unit with
plastic or other material to avoid contamination.
CAUTION!
The AERCO AM pool Heater must be moved ONLY with a forklift through the supporting skid,
as shown in Figure 3-2.

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Transporting an AM Series Pool Heating System
1. Remove the two (2) 3/8-16 hex cap screws, washers, and nuts attaching the front of the
assembly skid to the wooden pallet, and then remove the same hardware at the rear of the
unit.
2. Once the assembly is disconnected from the pallet, transport using a fork lift inserted into the
skid, at front (green arrows); or at the sides (yellow arrows), as indicated by in Figure 3-2.
Figure 3-2: Transporting the AM Series Pool Heater
CAUTION!
DO NOT use the lifting lugs on the AM boiler itself to lift the entire AM assembly. They are to
be used ONLY in the maintenance or replacement of the boiler unit.
Shipping Weights
Model
Approx. Weight (lbs.)
AM 399P
920
AM 500P
930
AM 750P
1,205
AM 1000P
1,290
3. When in position, remove all wrapping to prepare for installation.
WARNING!
The floor onto which the unit
is installed must be capable
of supporting the weight of
the unit or the unit and/or
building may be damage.