ahl-631 Revision Date 2.14.22
3
Part 1 - General Safety Information
This water heater is approved for indoor installations only and is
not intended for use as a pool heater. Clearance to combustible
materials: 0” top, bottom, sides, and back. Heater must have room
for service: 24” front, 6” top, and 6” 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 directly on carpeting. Install the water heater in a location
where temperature and pressure relief valve discharge or a leak will
not result in damage to the surrounding area. If such a location is
not available, install an auxiliary catch pan.
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. 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.
High heat sources (sources generating heat 100
o
F / 37
o
C or greater,
such as stove pipes, space heaters, etc.) may damage plastic
components of the water heater as well as plastic vent pipe materials.
Such damages ARE NOT covered by warranty. It is recommended to
keep a minimum clearance of 8” from high heat sources. Observe heat
source manufacturer instructions, as well as local, state, provincial,
and national codes, laws, regulations and ordinances when installing
this water heater and related components near high heat sources.
Table of Contents
Part 1 - General Safety Information 3
A. When Servicing the Water Heating System
3
B. Heater Water
3
C. Freeze Protection
3
D. Water Temperature Adjustment
3
Part 2 - Prepare the Water Heater
4
A. What’s in the Box
4
B. Locating the Water Heater
4
C. Water Chemistry Requirements
5
Part 3 - Piping
8
A. Plumbing
8
B. Thermal Expansion
8
C. Condensation
8
D. Insulation Blankets
8
E. Temperature and Pressure Relief Valve
8
F. Scalding
9
G. Filling the Heater
9
H. Applications
10
Part 4 - Wiring
10
Part 5 - Installation Checklist
11
Part 6 - Operation
11
A. Combination Thermostat and High Limit Control (ECO) 11
B. Thermostat Adjustment and ECO Reset
11
C. Heating Element Replacement Procedure
12
Part 7 - Maintenance
12
Part 8 - Troubleshooting
14
Part 9 - Replacement Parts
15
Limited Warranty
16
Customer Installation Record Form
18
Do not use this water heater for anything other than its intended
purpose (as described in this manual). Doing so could result in
property damage and WILL VOID product warranty.
A. When Servicing the Water Heating System
NOTE:
When inquiring about service or troubleshooting, reference the
model and serial numbers from the water heater rating label.
To avoid severe burns, allow water heater and associated equipment
to cool before servicing.
B. Heater Water
Do not use petroleum-based cleaning or sealing compounds in a water
heating system. Gaskets and seals in the system may be damaged. This
can result in substantial property damage.
Do not use “homemade cures” or “patent medicines”. Damage to the
water heater, substantial property damage, and/or serious personal
injury may result.
C. Freeze Protection
NOTE:
Consider piping and installation when determining heater
location. Failure of the water heater due to freeze related damage IS
NOT covered by product warranty.
NEVER use any toxic chemical, including automotive, standard glycol
antifreeze, or ethylene glycol made for hydronic (non-potable)
systems. These chemicals can attack gaskets and seals in water
systems, are poisonous if consumed, and can cause personal injury
or death.
NOTE:
Obey all local codes. Obtain all applicable permits before
installing the water heater.
NOTE:
Install all system components and piping in such a manner
that does not reduce the performance of any fire rated assembly.
UNCRATING THE WATER HEATER
- Any claims for damage or
shortage in shipment must be filed immediately against the
transportation company by the consignee.
Installer -
Read all instructions in this manual before installing.
Perform steps in the given order.
User -
This manual is for use only by a qualified heating installer
/ service technician. Have this water heater serviced / inspected
annually by a qualified service technician.
FAILURE TO ADHERE TO THE GUIDELINES ON THIS PAGE
CAN RESULT IN SUBSTANTIAL PROPERTY DAMAGE, SEVERE
PERSONAL INJURY, OR DEATH.
Be sure to disconnect electrical power before performing service.
Failure to do so could result in electrical shock, property damage,
serious personal injury, or death.
Households with small children, disabled, or elderly persons may
require a 120
o
F or lower temperature setting to prevent severe
personal injury or death due to scalding.
D. Water Temperature Adjustment
If the water heater is going to have a set temperature above 120
o
F, it is
recommended to use an ASSE 1017 rated mixing valve to avoid severe
burns or death from scalding temperatures.
