HTP PHP199-119, PHP199-119D, PHP260-130, PHP320-130, PHP399-130 Installation, Start-up, And Operating Instructions Manual
Phoenix Plus
Improper installation, adjustment, alteration, service, or maintenance could void product warranty and cause property damage, personal
injury, or death.
NOTE TO CONSUMER: PLEASE KEEP ALL INSTRUCTIONS FOR FUTURE REFERENCE.
This manual must only be used by a qualified heating installer/service technician. Read and understand all instructions in this manual
before installing. Perform steps in the order given. Failure to comply will result in substantial property damage, severe personal injury,
or death.
INSTALLATION
START-UP
MAINTENANCE
PARTS
Phoenix Plus Water Heater Models*
PHP199-119 / PHP199-119D / PHP260-130
PHP320-130 / PHP399-130
*A suffix of “LP” denotes propane gas
*A suffix of “S” denotes solar model
NOTICE: HTP reserves the right to make product changes or updates without notice and will not be held liable for typographical errors
in literature.
The surfaces of these products contacted by consumable water contain less than 0.25% lead by weight, as required by the Safe
Drinking Water Act, Section 1417.
120 Braley Rd. P.O. Box 429 East Freetown, MA 02717-0429 www.htproducts.com
LP-454 REV. 1.6.15
2
IF THE INFORMATION IN THIS MANUAL IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY RESULT, CAUSING
PROPERTY DAMAGE, PERSONAL INJURY, OR LOSS OF LIFE. DO NOT STORE 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. Installation and service must be provided by a qualified installer,
service agency, or the gas supplier.
LP-454 REV. 1.6.15
3
The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk
levels, or to important product information.
DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property
damage.
NOTICE
NOTICE is used to address practices not related to personal injury.
This manual must only be used by a qualified heating installer/service technician. Read and understand all instructions in this manual
before installing. Perform steps in the order given. Failure to comply will result in substantial property damage, severe personal injury,
or death.
FOREWORD
This manual is intended to be used in conjunction with other literature provided with the Phoenix Gas-Fired Water Heater. This includes
all related control information. It is important that this manual, all other documents included with this system, and additional publications
including the National Fuel Gas Code, ANSI Z223.1-2002, be reviewed in their entirety before beginning any work.
Installation should be made in accordance with the regulations of the Authority Having Jurisdiction, local code authorities, and utility
companies which pertain to this type of water heating equipment.
Authority Having Jurisdiction (AHJ) – The Authority Having Jurisdiction may be a federal, state, local government, or individual such
as a fire chief, fire marshal, chief of a fire prevention bureau, labor department or health department, building official or electrical
inspector, or others having statutory authority. In some circumstances, the property owner or his/her agent assumes the role, and at
government installations, the commanding officer or departmental official may be the AHJ.
NOTE: HTP, Inc. reserves the right to modify product technical specifications and components without prior notice.
FOR THE INSTALLER
This water heater must be installed by qualified and licensed personnel. The installer should be guided by the instructions furnished
with the heater, and with local codes and utility company requirements. In the absence of local codes, preference should be given to the
National Fuel Gas Code, ANSI Z223.1-2002.
INSTALLATIONS MUST COMPLY WITH:
Local, state, provincial, and national codes, laws, regulations and ordinances.
The latest version of the National Fuel Gas Code, ANSI Z223.1, from American Gas Association Laboratories, 8501 East Pleasant
Valley Road, Cleveland, OH 44131.
LP-454 REV. 1.6.15
In Canada – CGA No. B149 (latest version), from Canadian Gas Association Laboratories, 55 Scarsdale Road, Don Mills, Ontario,
Canada M3B 2R3. Also, Canadian Electrical Code C 22.1, from Canadian Standards Association, 5060 Spectrum Way, Suite 100,
Mississauga, Ontario, Canada L4W 5N6.
Code for the installation of Heat Producing Appliances (latest version), from American Insurance Association, 85 John Street, New
York, NY 11038.
The latest version of the National Electrical Code, NFPA No. 70.
NOTE: The gas manifold and controls met safe lighting and other performance criteria when undergoing tests specified in ANSI
Z21.10.3 – latest edition.
TABLE OF CONTENTS
PART 1 – GENERAL SAFETY INFORMATION .......................................................................................................................... 6
A. PRECAUTIONS .......................................................................................................................................................................... 6
B. IMPROPER COMBUSTION ........................................................................................................................................................ 6
C. GAS ............................................................................................................................................................................................ 6
D. WHEN SERVICING THE HEATER ............................................................................................................................................. 7
E. HEATER WATER........................................................................................................................................................................ 7
PART 2 – BEFORE YOU START ................................................................................................................................................ 7
4
A. WHAT’S IN THE BOX ................................................................................................................................................................. 7
B. HOW THE HEATER OPERATES ............................................................................................................................................... 7
C. OPTIONAL EQUIPMENT ........................................................................................................................................................... 8
PART 3 – PREPARE WATER HEATER LOCATION .................................................................................................................. 9
A. BEFORE LOCATING THE HEATER .......................................................................................................................................... 9
B. LEVELING ................................................................................................................................................................................ 10
C. CLEARANCES FOR SERVICE ACCESS ................................................................................................................................. 10
D. EXHAUST VENT AND INTAKE PIPE ....................................................................................................................................... 11
1. INDOOR DIRECT VENT INSTALLATION OF EXHAUST VENT AND INTAKE PIPE .......................................................................................... 12
2. INDOOR COMBUSTION AIR INSTALLATION IN CONFINED OR UNCONFINED SPACE ................................................................................ 12
3. OUTDOOR INSTALLATION ............................................................................................................................................................................... 12
E. PREVENT COMBUSTION AIR CONTAMINATION .................................................................................................................. 13
F. REMOVING A HEATER FROM A COMMON VENT SYSTEM ................................................................................................ . 13
G. WATER CHEMISTRY ............................................................................................................................................................... 14
PART 4 – HEATER PIPING ....................................................................................................................................................... 16
A. GENERAL PIPING INFORMATION .......................................................................................................................................... 16
B. SCALDING ................................................................................................................................................................................ 17
C. TEMPERATURE AND PRESSURE RELIEF VALVE................................................................................................................ 17
D. BACKFLOW PREVENTER ....................................................................................................................................................... 17
E. POTABLE EXPANSION TANK ................................................................ ................................................................ ................. 17
F. WATER PIPING ........................................................................................................................................................................ 18
G. AUXILIARY CONNECTIONS ................................................................................................................................................... 18
H. PIPING DIAGRAMS .................................................................................................................................................................. 19
PART 5 – VENTING, COMBUSTION AIR AND CONDENSATE REMOVAL............................................................................ 21
A. GENERAL ................................................................................................................................................................................. 21
LP-454 REV. 1.6.15
B. APPROVED MATERIALS FOR EXHAUST VENT AND INTAKE PIPE .................................................................................... 22
C. REQUIREMENTS FOR INSTALLATION IN CANADA .............................................................................................................. 22
D. EXHAUST VENT AND INTAKE PIPE LOCATION.................................................................................................................... 23
E. EXHAUST VENT AND INTAKE PIPE SIZING .......................................................................................................................... 24
F. EXHAUST VENT AND INTAKE PIPE INSTALLATION ............................................................................................................. 24
G. VENTING DRAWINGS ............................................................................................................................................................. 26
1. INDOOR DIRECT VENT INSTALLATION OF EXHAUST VENT AND INTAKE PIPE .......................................................................................... 26
2. VENTING THROUGH AN EXISTING SYSTEM .................................................................................................................................................. 29
3. INDOOR COMBUSTION AIR INSTALLATION IN CONFINED OR UNCONFINED SPACE ................................................................................ 31
4. OUTDOOR INSTALLATION ............................................................................................................................................................................... 33
H. CONDENSATE REMOVAL SYSTEM ....................................................................................................................................... 34
PART 6 – WIRING ..................................................................................................................................................................... 36
A. LINE VOLTAGE INPUT ............................................................................................................................................................ 36
B. LINE VOLTAGE CONDENSATE OUTPUT ............................................................................................................................... 36
C. INTERNAL WIRING DIAGRAM ................................................................................................................................................ 37
PART 7 – GAS CONNECTIONS ............................................................................................................................................... 40
A. GAS PIPING ............................................................................................................................................................................. 40
B. GAS TABLE .............................................................................................................................................................................. 40
C. GAS VALVE .............................................................................................................................................................................. 41
PART 8 – START-UP PROCEDURE ......................................................................................................................................... 42
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A. OPERATING INSTRUCTIONS ................................ ................................ ................................................................................. 42
B. OVERALL WATER HEATER AND CONTROL OPERATION ................................................................................................... 43
C. STATUS MENU ........................................................................................................................................................................ 43
D. TEST MODE ............................................................................................................................................................................. 43
E. MAINTENANCE ........................................................................................................................................................................ 44
PART 9 – SHUTDOWN.............................................................................................................................................................. 44
A. SHUTDOWN PROCEDURE ..................................................................................................................................................... 44
B. VACATION PROCEDURE ........................................................................................................................................................ 44
C. FAILURE TO OPERATE ........................................................................................................................................................... 44
PART 10 – TROUBLESHOOTING ............................................................................................................................................ 45
A. ERROR CODE .......................................................................................................................................................................... 45
B. HEATER ERROR...................................................................................................................................................................... 45
C. LOCKOUT ................................................................................................................................................................................ 45
PART 11 - MAINTENANCE ....................................................................................................................................................... 51
MAINTENANCE NOTES ........................................................................................................................................................................................ 55
HTP CUSTOMER INSTALLATION RECORD FORM ............................................................................................................................................. 56
LP-454 REV. 1.6.15
This water heater has a condensate disposal system that may freeze if exposed to sustained temperatures below 32oF. Precautions
should be taken to protect the condensate trap and drain lines from sustained freezing conditions. Failure to take precautions could
result in property damage, severe personal injury, or death.
INSTALLER – Read all instructions in this manual before installing. Perform steps in the order given.
USER – This manual is for use only by a qualified heating installer/service technician. Have this heater serviced/inspected by a
qualified service technician annually.
FAILURE TO ADHERE TO THE GUIDELINES ON THIS PAGE AND HAVE THIS HEATER SERVICED/INSPECTED ANNUALLY
CAN RESULT IN SUBSTANTIAL PROPERTY DAMAGE, SEVERE PERSONAL INJURY, OR DEATH.
If the heater is exposed to the following, do not operate until all corrective steps have been made by a qualified service technician:
1. FIRE
2. DAMAGE
3. WATER
Any claims for damage or shortage in shipment must be filed immediately against the transportation company by the consignee.
DO NOT USE THIS WATER HEATER IF ANY PART HAS BEEN SUBMERGED IN WATER. Immediately call a qualified service
technician. The water heater MUST BE replaced if it has been submerged. Attempting to operate a water heater that has been
submerged could create numerous harmful conditions, such as a potential gas leakage causing a fire and/or explosion, or the release
of mold, bacteria, or other harmful particulates into the air. Operating a previously submerged water heater could result in property
damage, severe personal injury, or death.
NOTE: Water heater damage due to flood or submersion is considered an Act of God, and IS NOT covered under product warranty.
Altering any HTP, Inc. water heater with parts not manufactured and/or approved by HTP, Inc. WILL INSTANTLY VOID the water
heater warranty and could result in property damage, serious personal injury, or death.
This water heater has been designed to heat potable water ONLY. Using this water heater to heat non-potable fluid WILL VOID product
warranty, and could result in property damage, personal injury, or death.
Do not obstruct the flow of combustion and ventilating air. Adequate air is necessary for safe operation. Failure to keep the exhaust
vent and intake pipe clear of ice, snow, or other debris could result in property damage, serious personal injury, or death.
PART 1 – GENERAL SAFETY INFORMATION
A. PRECAUTIONS
INDOOR INSTALLATION
Clearance to combustible materials: 0” top, bottom, sides and back. Unit must have room for service: 24” front and 12” sides are
minimum recommended service clearances. (A combustible door or removable panel is acceptable front clearance.) This water heater
has been approved for closet installation, and installation on combustible flooring. Do not install this water heater directly on carpeting.
Use only Category IV vent systems.
OUTDOOR INSTALLATION
Clearance to combustible materials: 0” top, bottom, sides and back. Special attention should be paid to ensure that T&P valve
discharge and drainage from the condensate line will not adversely affect the surrounding area or pose a hazard in freezing conditions.
6
B. IMPROPER COMBUSTION
C. GAS
Should overheating or gas supply fail to shut off, turn off the manual gas control valve to the water heater.
LP-454 REV. 1.6.15
D. WHEN SERVICING THE HEATER
To avoid electric shock, disconnect electrical supply before performing maintenance.
To avoid severe burns, allow heater to cool.
E. HEATER WATER
Do not use petroleum-based cleaning or sealing compounds in a heater system. Gaskets and seals in the system may be
damaged. This can result in substantial property damage.
Do not use “homemade cures” or “heater patent medicines”. Substantial property damage, damage to heater, and/or serious
personal injury may result.
7
PART 2 – BEFORE YOU START
A. WHAT’S IN THE BOX
Also included with the heater:
Temperature and Pressure Relief Valve
Brass Tee and Bushing
Installation Manual
Warranty
LP Conversion Kit (Natural Gas Models Only)
B. HOW THE HEATER OPERATES
Modulation Condensing Technology is an intelligent system that delivers
highly efficient water heating, while maximizing efficiency by measuring the
data parameters of your water heating system. Some of its features are:
Stainless Steel Water Storage Tank
The stainless steel water storage tank has a combustion chamber
submerged into the tank water. When the water heater is fired, combustion
gases heat the combustion chamber walls, transferring heat directly into the surrounding water. These hot gases are blown into
secondary heat exchanger coils, where more heat is transferred into the water, removing even more heat from the gases.
LP-454 REV. 1.6.15
Dual Modulating Combustion Systems
The water heater is provided with two independent combustion systems. Each combustion system has a separate control that
modulates burner output based on measurements taken by water temperature sensors located within the upper and lower portions of
the storage tank, efficiently regulating burner output to match system demand. These systems increase efficiency and allow for
substantial fuel savings.
Gas Valve
The gas valve senses suction from the blower, allowing gas to flow only if the gas valve is energized and combustion air is flowing.
Upper Supply Tank Sensor
This sensor monitors the upper portion water temperature (system supply) of the water heater. The control module adjusts the burner
firing rate so the outlet water temperature meets the set point.
Lower Return Tank Sensor
This sensor monitors the lower portion of the water heater inlet water temperature (system return). The control module reduces or
increases input, depending on how close the water temperature is to the outlet water temperature set point.
Control
The integrated control system monitors upper and lower water temperature and regulates fan speed to regulate the unit’s energy
output. This allows the unit to deliver the required amount of heated energy and nothing more.
Burner
Constructed of high grade stainless steel, the burner uses pre-mixed air and gas and provides a wide range of firing rates.
Condensate Drain Connection
This is a condensing high efficiency water heater, and therefore has a condensate removal system. Condensate is nothing more than
water vapor, derived from combustion products and similar to that produced by an automobile when it is initially started. It is very
important that the condensate line slopes away from the water heater and down to a suitable drain.
If the condensate outlet on the heater is lower than the drain, you must use a condensate removal pump (kit p/n 554200 available from
HTP.) In addition, local authorities may require a condensate neutralizer to neutralize the condensate. Condensate neutralizers are
made up of lime crystals, marble or phosphate chips. Neutralizers can be installed in the field by the installer and purchased from HTP
(p/n 7450P-212).
It is also very important not to expose the condensate line to freezing temperatures or any type of blockage. Plastic tubing must be the
only material used for the condensate line. Steel, brass, copper or other materials will be subject to corrosion or deterioration. A second
vent may be necessary to prevent condensate line vacuum lock on a long horizontal run. Also, an increase in pipe size may be
necessary to allow condensate to drain properly. Support of the condensate line may be necessary to avoid blockage of the condensate
flow.
Spark Ignition
The burner flame is ignited by applying high voltage to the system spark electrode. This causes a spark from electrode to ground.
8
C. OPTIONAL EQUIPMENT
Below is a list of optional equipment available from HTP:
3” Stainless Steel Outside Termination Vent Kit (V1000)
4” Stainless Steel Outside Termination Vent Kit (V2000)
3" PVC Concentric Vent Kit (Part # KGAVT0601CVT)
3” Polypro Vent Kit (Part # 8400P-001)
3” Polypro Pipe (33’ length Part # 8400P-002, 49.5’ length Part # 8400P-003)
PC Connection Kit (Part # 7250P-320)
Condensate Neutralizer (Part # 7450P-212)
LP-454 REV. 1.6.15
Carefully consider installation when determining heater location. Please read the entire manual before attempting installation. Failure to
properly take factors such as heater venting, piping, condensate removal, and wiring into account before installation could result in
wasted time, money, and possible property damage and personal injury.
These heaters are design certified for outdoor installations. Heaters must not be installed under an overhang unless clearances are in
accordance with local codes, the requirements of the gas supplier / utility, and the AHJ. Three sides must remain open in the area
under the overhang. Roof water drainage must be diverted away from heaters installed under overhangs. Failure of heater or
components due to incorrect operating conditions IS NOT covered by product warranty.
Incorrect ambient conditions can lead to damage to the heating system and put safe operation at risk. Ensure that the heater installation
location adheres to the information included in this manual. Failure to do so could result in property damage, serious personal injury, or
death.
The water heater is heavy. Take precautions when moving the water heater into its installation location to avoid tipping, bumping, or
dropping it. Failure to take such precautions may result in property damage, severe personal injury, or death.
Failure of heater or components due to incorrect operating conditions IS NOT covered by product warranty.
Figure 1 – Outdoor Installation Recommendations
PART 3 – PREPARE WATER HEATER LOCATION
A. BEFORE LOCATING THE HEATER
9
1. a. Indoor Installation Area (Mechanical Room) Operating
Conditions
Ensure ambient temperatures are higher than 32oF/0oC
and lower than 140oF/60oC.
Prevent the air from becoming contaminated by the
products, places, and conditions listed in this manual,
Part 3, Section F.
Avoid continuously high levels of humidity
Never close existing ventilation openings
Ensure a minimum 1” clearance around hot water and
exhaust vent pipes
b. Outdoor Installation
Heater must be placed in an area where the exhaust
plume will not be recirculated into the louver system
located on the front access panel. Avoid fences or walls
that extend above the exhaust vent termination. Pipe the
exhaust vent so that it terminates level with or above the
fence, wall, or enclosed area.
Do not install heaters in locations where rain from
building runoff may spill onto the heater. Doing so could
result in premature product failure. Such failures ARE
NOT covered by warranty.
Do not locate where sprinklers may spray directly onto
the heater cabinet and possibly into the louvers, which
could damage the control system and internal
components of the water heater. Such damages ARE
NOT covered by warranty.
Do not install directly on the ground, as the water heater
is heavy when filled with water. Install the heater level on
a concrete pad, block, or pressure treated wood platform,
designed to support the weight of the water heater and
components when filled with water. The water heater
must be properly supported and installed level in order to operate and drain condensate properly.
Do not install the water heater under a deck or porch.
LP-454 REV. 1.6.15
When installing the heater outdoors, ensure the installation location is not near the exhaust or intake terminations of other gas-fired
products – boilers, water heaters, furnaces, etc. Failure to do so could result in the recirculation of exhaust fumes. Exhaust recirculation
could result in a hazardous condition and cause substantial property damage, severe personal injury, or death.
Failure to keep heater area clear and free of combustible materials, liquids, and vapors can result in substantial property damage,
severe personal injury, or death.
In order for the condensate to properly flow out of the collection system, the area where you locate the heater must be level. Location
must also fully support the weight of the filled water heater. Failure to properly level the heater could result in improper heater operation,
premature product failure, property damage, personal injury, or death.
All water heaters eventually leak. It is recommended to install a catch pan beneath the water heater. This catch pan should be sized
with a maximum depth of 2”, and a minimum diameter 2” greater than the diameter of the water heater. The catch pan should empty
into an open drain line. This drain line should be ¾” ID minimum, piped to an open drain. Failure to follow these instructions could result
in property damage. Such damages ARE NOT covered by product warranty.
Do not install the water heater in a well, stairwell, alcove, courtyard, or other recessed area.
Do not install the water heater on stack frames.
In areas where heater is exposed to sustained temperatures below 32oF, provisions must be made to protect the water heater,
condensate lines, and piping from freezing. The use of heat tape is recommended to avoid freezing. It is also recommended to
bush up the condensate line size to 1” and terminate condensate discharge as close to the unit as possible. Longer
condensate runs are more prone to freezing.
Locate heater at least 10’ away from any forced air inlet. Maintain a clearance of at least 48” below or horizontal from any
window, door, walkway, or gravity air intake. Never place heater under a porch.
In areas where it can get extremely hot (over 100oF), it is recommended to install the heater in an area that avoids direct
sunlight to keep the internal components cooler. Failure to follow this instruction could lead to premature heater failure. Such
failures ARE NOT covered by warranty.
2. Check for nearby connections to:
System water piping
Venting connections
Gas supply piping
Electrical power
Condensate drain
3. Check area around heater. Remove any combustible materials, gasoline, and other flammable liquids.
10
4. Gas control system components must be protected from dripping water during operation and service.
5. If the heater is to replace an existing heater, check for and correct any existing system problems, such as:
System leaks
Location that could cause the system and heater to freeze and leak.
Incorrectly-sized expansion tank
6. Clean and flush system when reinstalling a heater.
NOTE: When installing in a zero clearance location, it may not be possible to read or view some product labeling. It is recommended to
make note of the heater model and serial number.
B. LEVELING
C. CLEARANCES FOR SERVICE ACCESS
LP-454 REV. 1.6.15
11
The space must be provided with combustion/ventilation air openings correctly sized for all other water heaters located in the same
space as the heater. The heater cover must be securely fastened to prevent the heater from drawing air from the heater room. This is
particularly important if the heater is in a room with other water heaters. Failure to comply with the above warnings could result in
substantial property damage, severe personal injury, or death.
Failure to vent the water heater properly will result in serious personal injury or death.
Do not attempt to vent this water heater by any means other than those described in this manual. Doing so will void the warranty, and
may result in severe personal injury or death.
Failure to provide an adequate supply of fresh combustion air can cause poisonous flue gases to enter living space, resulting in severe
personal injury or death. To prevent combustion air contamination, see Table 1.
Figure 2 – Minimum Service Clearances
NOTE: If you do not provide the minimum clearances shown in Figure 2, it might not be possible to service the heater without removing
it from the space.
D. EXHAUST VENT AND INTAKE PIPE
The heater is rated ANSI Z21.10.3 Category IV (pressurized vent, likely to form condensate in the vent) and requires a special vent
system designed for pressurized venting.
NOTE: The venting options described here (and further detailed in the Venting section of this manual) are the lone venting
options approved for this water heater. Failure to vent the water heater in accordance with the provided venting instructions
WILL VOID the warranty.
LP-454 REV. 1.6.15
12
Vents must be properly supported. Heater exhaust and intake connections are not designed to carry heavy weight. Vent support
brackets must be within 1’ of the heater and the balance at 4’ intervals. Heater must be readily accessible for visual inspection for the
first 3’ from the heater.
When drawing combustion air from the outside into the mechanical room, care must be taken to provide adequate freeze protection.
1. INDOOR DIRECT VENT INSTALLATION OF EXHAUST VENT AND INTAKE PIPE
If installing a direct vent option, combustion air must be drawn from the outdoors directly into the water heater intake, and exhaust vent
must terminate outside. There are three basic direct vent options detailed in this manual: 1. Side Wall Venting, 2. Roof Venting, and 3.
Unbalanced Venting.
Be sure to locate the heater such that the exhaust vent and intake piping can be routed through the building and properly terminated.
Different vent terminals can be used to simplify and eliminate multiple penetrations in the building structure (see Optional Equipment in
Venting Section). The exhaust vent and intake piping lengths, routing and termination methods must all comply with the methods and
limits given in the Venting section of this manual.
When installing a combustion air intake from outdoors, care must be taken to utilize uncontaminated combustion air. To prevent
combustion air contamination, see Table 1 – Contaminant Table.
2. INDOOR COMBUSTION AIR INSTALLATION IN CONFINED OR UNCONFINED SPACE
This heater requires fresh, uncontaminated air for safe operation and must be installed in a mechanical room where there is adequate
combustion and ventilating air. NOTE: To prevent combustion air contamination, see Table 1 – Contaminant Table.
Combustion air from the indoor space can be used if the space has adequate area or when air is provided through a duct or louver to
supply sufficient combustion air based on the water heater input. Never obstruct the supply of combustion air to the water heater.
If the water heater is installed in areas where indoor air is contaminated (see Table 1) it is imperative that the water heater be installed
as direct vent so that all combustion air is taken directly from the outdoors into the water heater intake connection.
Unconfined space is space with volume greater than 50 cubic feet per 1,000 Btu/hour (4.8 cubic meters per kW) of the total input
rating of all fuel-burning appliances installed in that space. Rooms connected directly to this space, through openings not furnished with
doors, are considered part of the space.
Confined space is space with volume less than 50 cubic feet per 1,000 Btu/hour (4.8 cubic meters per kW) of the total input rating of
all fuel-burning appliances installed in that space. Rooms connected directly to this space, through openings not furnished with doors,
are considered part of the space.
When drawing combustion air from inside a conventionally constructed building to a confined space, such space should be provided
with two permanent openings: one located 6” (15 cm) below the space ceiling, the other 6” (15cm) above the space floor. Each opening
should have a free area of one square inch per 1,000 Btu/hr (22cm2/kW) of the total input of all appliances in the space, but not less
than 100 square inches (645cm2).
If the confined space is within a building of tight construction, air for combustion must be obtained from the outdoors as outlined in the
Venting section, Part 5 of this manual.
3. OUTDOOR INSTALLATION
This water heater is designed to draw combustion air through the louver system in the front of the heater cabinet. Before commissioning
or starting a heater installed outdoors, the end cap must be removed so that the heater draws combustion air through the louvers. This
combustion air also serves to cool the internal electronics when the heater is installed in very warm climates.
To prevent combustion air contamination or exhaust recirculation:
Ensure the heater is located away from the building. Flue gas can cause damage to exterior walls and other devices.
Locate the heater at least 48” below or horizontally from any window, door, walkway, or gravity air intake.
Locate the heater 10’ away from any public area, outdoor sitting area, or forced air inlet.
Locate the heater away from areas that may change over time. Do not allow the growth of trees, shrubs, or plants to obstruct
proper operation of the exhaust vent system.
If the heater is located in a fenced area, ensure the unit exhaust vent extends level with or above the top of the fence to
ensure flue gas does not get trapped and possibly recirculated into the louver system, which could contaminate the
combustion air.
See Venting section for additional details.
LP-454 REV. 1.6.15
Do not attempt to vent this water heater by any means other than those described in this manual. Doing so will void the warranty, and
may result in severe personal injury or death.
Ensure that the intake air will not contain any of the contaminants below. Contaminated air will damage the heater, resulting in possible
substantial property damage, severe personal injury, or death. For example, do not pipe intake or install water heater outdoors near a
swimming pool. Also, avoid areas subject to exhaust fumes from laundry facilities. These areas always contain contaminants.
PRODUCTS TO AVOID
AREAS LIKELY TO HAVE CONTAMINANTS
Spray cans containing fluorocarbons
Dry cleaning/laundry areas and establishments
Permanent wave solutions
Swimming pools
Chlorinated waxes/cleaners
Metal fabrication plants
Chlorine-based swimming pool chemicals
Beauty shops
Calcium chloride used for thawing
Refrigeration repair shops
Sodium chloride used for water softening
Photo processing plants
Refrigerant leaks
Auto body shops
Paint or varnish removers
Plastic manufacturing plants
Hydrochloric or Muriatic acid
Furniture refinishing areas and establishments
Cements and glues
New building construction
Antistatic fabric softeners used in clothes dryers
Remodeling areas
Chlorine-type bleaches, laundry detergents, and cleaning solvents
Garages and workshops
Adhesives used to fasten building products
Do not install the heater into a common vent with any other
appliance. This will cause flue gas spillage or appliance malfunction,
resulting in possible substantial property damage, severe personal
injury, or death.
Failure to follow all instructions can result in flue gas spillage and
carbon monoxide emissions, causing severe personal injury or death.
NOTE: DAMAGE TO THE HEATER CAUSED BY EXPOSURE TO CORROSIVE VAPORS IS NOT COVERED BY WARRANTY.
(Refer to the limited warranty for complete terms and conditions).
Figure 3 - CO Warning Label
E. PREVENT COMBUSTION AIR CONTAMINATION
Install intake piping for the heater as described in the Venting Section. Do not terminate exhaust in locations that can allow
contamination of intake air.
13
Table 1 – Contaminant Table
F. REMOVING A HEATER FROM A COMMON VENT SYSTEM
When removing an existing heater, follow the steps below.
1. Seal any unused openings in the common venting system.
2. Visually inspect the venting system for proper size and horizontal
pitch to determine if there is blockage, leakage, corrosion or other
deficiencies that could cause an unsafe condition.
3. If practical, close all building doors, windows and doors between the
space in which the water heater remains connected to the common
venting system and other spaces in the building. Turn on clothes dryers and any appliances not connected to the common venting
system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, at maximum speed. Do not operate a summer
exhaust fan. Close all fireplace dampers.
4. Place in operation the appliance being inspected. Follow the lighting instructions. Adjust the thermostat so the appliance will operate
continuously.
LP-454 REV. 1.6.15
14
Chemical imbalance of the water supply may affect efficiency and cause severe damage to the water heater and associated equipment.
HTP recommends having water quality professionally analyzed to determine whether it is necessary to install a water softener. It is
important that the water chemistry on both the domestic hot water and central heating sides are checked before installing the water
heater, as water quality will affect the reliability of the system. Failure of a heat exchanger due to lime scale build-up on the heating
surface, low pH, or other chemical imbalance IS NOT covered by the warranty.
Operating temperatures above 135oF will further accelerate the build-up of lime scale on the heating surface and may shorten the
service life of the water heater. Failure of a heat exchanger due to lime scale build-up on the heating surface, low pH, or other chemical
imbalance IS NOT covered by the warranty.
CLASSIFICATION
MG/L OR PPM
GRAINS/GAL
Soft
0 – 17.1
0 - 1
Slightly Hard
17.1 – 60
1 – 3.5
Moderately Hard
60 – 120
3.5 – 7.0
Hard
120 – 180
7.0 – 10.5
Very Hard
180 and over
10.5 and over
5. Test for spillage at the draft hood relief opening after 5 minutes of main burner operation. Use the flame of a match or candle or
smoke from a cigarette.
6. After it has been determined that each appliance remaining connected to common venting system properly vents when tested as
outlined, return doors, windows, exhaust fans, fireplace dampers and any other gas burning appliance to their previous condition of use.
7. Any improper operation of the common venting system should be corrected to conform to the National Fuel Gas Code, ANSI Z223.1.
When resizing any portion of the common venting system, the system should approach the minimum size as determined using the
appropriate tables in Appendix G in the National Fuel Gas Code, ANSI Z 223.1.
G. WATER CHEMISTRY
Outlined below are water quality parameters which need to be met in order for the system to operate efficiently for many years.
Water Hardness
Water hardness is mainly due to the presence of calcium and magnesium salts dissolved in water. The concentration of these salts is
expressed in mg/L, ppm, or grains per gallon as a measure of relative water hardness. Grains per gallon is the common reference
measurement used in the U.S. water heater industry. Hardness expressed as mg/L or ppm may be divided by 17.1 to convert to grains
per gallon. Water may be classified as very soft, slightly hard, moderately hard, or hard based on its hardness number. The minerals in
the water precipitate out as the water is heated and cause accelerated lime scale accumulation on a heat transfer surface. This lime
scale build-up may result in premature failure of the heat exchanger. Operating temperatures above 135oF will further accelerate the
build-up of lime scale on the heating surface and may shorten the service life of the water heater.
Water that is classified as hard and very hard must be softened to avoid heat exchanger failure. See below for further information about
water hardness.
If the hardness of the water exceeds the maximum level of 7 grains per gallon, water should be softened to a hardness level no lower
than 5 grains per gallon. Water softened as low as 0 to 1 grain per gallon may be under-saturated with respect to calcium carbonate,
resulting in water that is aggressive and corrosive.
pH of Water
pH is a measure of relative acidity, neutrality or alkalinity. Dissolved minerals and gases affect water pH. The pH scale ranges from 0 to
14. Water with a pH of 7.0 is considered neutral. Water with a pH lower than 7 is considered acidic. Water pH higher than 7 is
considered alkaline. A neutral pH (around 7) is desirable for most potable water applications. Corrosion damage and heater failures
resulting from water pH levels of lower than 6 or higher than 8 ARE NOT covered by the warranty. The ideal pH range for water
used in a storage tank or a water heater system is 7.2 to 7.8.
Total Dissolved Solids
Total Dissolved Solids (TDS) is a measurement of all minerals and solids dissolved in a water sample. The concentration of total
dissolved solids is usually expressed in parts per million (ppm).
Water with a high TDS concentration will greatly accelerate lime and scale formation in the hot water system. Most high TDS
concentrations precipitate out of the water when heated. This can generate a scale accumulation on the heat transfer surface that will
greatly reduce the service life of a water heater. This scale accumulation can also impede the ability of the heat exchanger to transfer
heat into the water. A heat exchanger damaged or blocked by lime/scale accumulation must be replaced.
LP-454 REV. 1.6.15
15
UNCRATING HEATER – Any claims for damage or shortage in shipment must be filed immediately against the transportation company
by the consignee.
The manufacturer of the water heater has no control of water quality, especially TDS levels in your system. Total dissolved solids in
excess of 2,000 ppm will accelerate lime and scale formation in the heat exchanger. Heat exchanger failure due to total dissolved solids
in excess of 2,000 ppm is a non-warrantable condition. Failure of a water heater due to lime scale build up on the heating surface
IS NOT covered by the warranty.
Hardness: 7 grains
Chloride levels: 100 ppm
pH levels: 6-8
TDS: 2000 ppm
Sodium: 20 mGL
Figure 4 – *ALL DIMENSIONS ARE APPROXIMATE – A SUFFIX OF “LP” DENOTES PROPANE GAS
LP-454 REV. 1.6.15
COLD WEATHER HANDLING – If the heater has been stored in a very cold location (BELOW 0oF) before installation, handle with care
until the plastic components come to room temperature.
PERFORMANCE SPECIFICATIONS FOR PHOENIX PLUS MODELS
MODEL
GALLON CAPACITY
BTU/HR INPUT
TEMPERATURE RISE IN DEGREES FAHRENHEIT
40
50
60
70
80
90
100
110
120
130
140
PHP199-119
PHP199-119D
119
199,000
GPH
579
463
386
331
289
257
232
211
193
178
165
GPM
9.6
7.7
6.4
5.5
4.8
4.3
3.9
3.5
3.2
3.0
2.8
PHP260-119
260,000
GPH
756
605
504
432
378
336
303
275
252
233
216
GPM
12.6
10.1
8.4
7.2
6.3
5.6
5.0
4.6
4.2
3.9
3.6
PHP320-119
320,000
GPH
931
745
621
532
465
414
372
339
310
286
266
GPM
15.5
12.4
10.3
8.9
7.8
6.9
6.2
5.6
5.2
4.8
4.4
PHP399-119
399,000
GPH
1161
929
774
663
580
516
464
422
387
357
332
GPM
19.3
15.5
12.9
11.1
9.7
8.6
7.7
7.0
6.4
6.0
5.5
Failure to follow the instructions in this section WILL VOID the warranty and may result in property damage, serious injury, or death.
Use two wrenches when tightening water piping at heater. Use one wrench to prevent the heater return or supply line from turning.
Failure to prevent piping connections from turning could cause damage to heater components.
DO NOT pipe this water heater with black iron, galvanized steel, steel, or lead pipe. Doing so will result in premature product failure and
property damage, and WILL VOID the product warranty.
The heater control module uses temperature sensors to provide both high limit protection and modulating temperature control. The
control module also provides low water protection by sensing the water level in the tank. Some codes/jurisdictions may require
additional external controls.
Never use dielectric unions or galvanized steel fittings when connecting to a stainless steel storage tank or heater. Use only copper or
brass fittings. Teflon thread sealant must be used on all connections.
Remove all sides of the shipping crate to allow the heater to be moved into its installation location.
Table 2 – Phoenix Plus Performance – 95% Thermal Efficiency Used for Calculations
PERFORMANCE EQUATIONS
Rated Input x .95
GPM = Temp Rise (oF) x 500 GPH = GPM x 60
16
PART 4 – HEATER PIPING
A. GENERAL PIPING INFORMATION
LP-454 REV. 1.6.15
Overheated water and high pressures can cause water tank explosion. A properly sized temperature and pressure relief valve must be
installed in the opening provided on the water heater. Failure to install a properly sized temperature and pressure relief valve could
result in explosion and property damage, serious injury, or death.
To avoid water damage or scalding due to relief valve operation:
Discharge line must be connected to relief valve outlet and run to a safe place of disposal. Terminate the discharge line in a
manner that will prevent possibility of severe burns or property damage should the relief valve discharge.
Discharge line must be as short as possible and the same size as the valve discharge connection throughout its entire length.
Discharge line must pitch downward from the valve and terminate at least 6” above the floor drain, making discharge clearly
visible.
The discharge line shall terminate plain, not threaded, with a material serviceable for temperatures of 375oF or greater.
Do not pipe discharge to any location where freezing could occur.
No shutoff valve may be installed between the relief valve and heater or in the discharge line. Do not plug or place any
obstruction in the discharge line.
Test the operation of the relief valve after filling and pressurizing the system by lifting the lever. Make sure the valve
discharges freely. If the valve fails to operate correctly, immediately replace with a new properly rated relief valve.
Test T&P valve at least once annually to ensure the waterway is clear. If valve does not operate, turn the heater “off” and call
a plumber immediately.
Take care whenever operating relief valve to avoid scalding injury or property damage.
FAILURE TO COMPLY WITH THE ABOVE GUIDELINES COULD RESULT IN FAILURE OF RELIEF VALVE OPERATION,
RESULTING IN POSSIBILITY OF SUBSTANTIAL PROPERTY DAMAGE, SEVERE PERSONAL INJURY, OR DEATH.
Do not thread a cap or plug into the relief valve under any circumstances! Explosion and property damage, serious injury, or death may
result.
Table 3
APPROXIMATE TIME / TEMPERATURE RELATIONSHIPS IN SCALDS
120oF
More than 5 minutes
125oF
1 ½ to 2 minutes
130oF
About 30 seconds
135oF
About 10 seconds
140oF
Less than 5 seconds
145oF
Less than 3 seconds
150oF
About 1 ½ seconds
155oF
About 1 second
B. SCALDING
This heater can deliver scalding water. Be careful whenever using hot water to avoid
scalding injury. Certain appliances, such as dishwashers and automatic clothes washers
may require increased water temperature. By setting the thermostat on this heater to obtain
the increased water temperature required by these appliances, you may create the potential
for scald injury.
To protect against injury, you should install a mixing valve in the water system. This valve
will reduce point of discharge temperature by mixing cold and hot water in branch supply
lines. Such valves are available from your local plumbing supplier.
Table 3 details the relationship of water temperature and time with regard to scald injury and
may be used as a guide in determining the safest water temperature for your applications.
17
C. TEMPERATURE AND PRESSURE RELIEF VALVE
D. BACKFLOW PREVENTER
Use a backflow preventer specifically designed for water heater installations. This valve should be installed on the cold water fill supply
line per local codes.
E. POTABLE EXPANSION TANK
A potable hot water expansion tank is required to offset heated water expansion. In most city plumbing systems, the water meter has a
no return or back flow device built into the system to prevent back flowing of water into city mains. Some local codes require back flow
preventers on all incoming water supplies. The hot water expansion tank must be listed for potable water use. The expansion tank
should be located on the cold inlet piping close to the water heater.
LP-454 REV. 1.6.15
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