lp-441 Rev. 004 Rel. 000 Date 7.2.21
4
G. Filling the Heater
15
H. Applications
16
Part 5 - Venting
18
A. General
18
B. Approved Materials for Exhaust Vent and Intake Pipe
19
C. Additional Requirements for Installation in Canada
19
D. Exhaust Vent and Intake Pipe Location
20
E. Exhaust Vent and Intake Pipe Sizing
21
F. Longer Vent Runs
21
G. Exhaust Vent and Intake Pipe Installation
21
H. Applications
22
1. Direct Vent Installation of Exhaust and Intake
22
2. Venting Through an Existing System
26
3. Power Venting, Indoor Combustion Air in Confined or Unconfined
Space
27
Part 6 - Condensate Removal
28
Part 7 - Wiring
30
A. Line Voltage Input
30
C. Low Voltage Outdoor Sensor Input
30
B. Line Voltage Condensate Input
30
D. Internal Wiring Diagram
31
Part 8 - Gas Connections
32
A. Gas Pipe Sizing Tables
32
1. Gas Pipe Sizing
32
2. Natural Gas Pipe Sizing
32
3. LP (Liquid Propane) Gas Pipe Sizing
32
B. Gas Piping Requirements
33
C. Additional Precaution for Excess Flow Valve (EFV)
33
D. Gas Valve
34
E. Checking Gas Pressure at the Water Heater for Proper Operation
34
Part 9 - Start-Up Preparation
35
A. Check / Control Water Chemistry
35
B. Check for Gas Leaks
35
C. Fill and Test Water System
35
D. Condensate Removal
35
Part 10 - Start-Up Procedure
36
A. Operating Instructions
36
B. Test Mode
36
C. Maintenance
37
Part 11 - Controls
38
A. Control and Display Overview
38
B. Basic Control Functions
39
1. Turning the Water Heater On / Off
39
2. Resetting the Water Heater
39
3. Putting the Water Heater in ECO Mode
39
4. Changing User Setpoint
39
C. Advanced Control Functions
39
1. Upper Level Control Functions
39
2. Technical Service and Navigation
40
D. Outdoor Reset
40
1. Inquiry Mode and Navigation
40
2. History Mode and Navigation
41
3. Reset Mode and Navigation
41
Part 12 - Shutdown
42
A. Shutdown Procedure
42
B. Vacation Procedure
42
C. Failure to Operate
42
D. Important Notice
42
Part 13 - Troubleshooting
42
A. Error Code
42
B. Heater Error
42
C. Lockout
42
Part 14 - Installation Checklist
46
Part 15 - Maintenance
47
Part 16 - Replacement Parts
50
Limited Warranty
52
Maintenance Notes
54
Customer Installation Record Form
55
Table of Contents
Part 1 - General Safety Information
5
A. Operation and Installation Warnings
5
B. Improper Combustion
6
C. Gas
6
D. When Servicing the Water Heating System
6
E. Water Chemistry Requirements
6
F. Freeze Protection
7
G. Water Temperature Adjustment
7
H. High Elevation Installations
7
Part 2 - Before You Start
8
A. What’s in the Box
8
B. How the Heater Operates
8
C. Optional Equipment
8
Part 3 - Prepare the Water Heater
8
A. Locating the Water Heater
8
B. Leveling
9
C. Clearances for Service Access
9
D. Residential Garage and Closet Installations
10
E. Exhaust Vent and Intake Pipe
10
1. Direct Vent of Exhaust and Intake
11
2. Power Venting, Indoor Combustion Air in Confined or
Unconfined Space
11
F. Carbon Monoxide Detectors
11
G. Prevent Combustion Air Contamination
11
H. Removing a Heater from a Common Vent System
12
I. Anode Rod
12
Part 4 - Piping
14
A. General Plumbing Information
14
B. Auxiliary Connections
14
C. Backflow Preventer
14
D. Potable Expansion Tank
14
E. Temperature and Pressure Relief Valve
14
F. Scalding
15
From the Uniform Plumbing Code 2000 - Section 510 -
Protection From Damage
1. Water heaters generating a glow, spark or flame capable of igniting
flammable vapors may be installed in a garage, provided the pilots,
burners or heating elements and switches are at least eighteen (18)
inches (457 mm) above the floor level.
2. Where such water heaters installed within a garage are enclosed in
a separate, approved compartment having access only from outside
of the garage, such water heaters may be installed at floor level
provided the required combustion air is also taken from the exterior
of the garage. Fuel burning water heaters having sealed combustion
chambers need not be elevated.
3. All water heaters installed in areas where they may be subjected to
mechanical damage shall be suitably guarded against such damage
by being installed behind adequate barriers or by being elevated or
located out of the normal path of a vehicle using any such garage.
4. In seismic zones 3 and 4, water heaters shall be anchored or
strapped to resist horizontal displacement due to earthquake
motion. Strapping shall be at points within the upper one-third (1/3)
and lower one-third (1/3) of its vertical dimensions. At the lower
point, a minimum distance of four (4) inches (102 mm) shall be
maintained above the controls with the strapping.
5. An water heater supported from the ground shall rest on level
concrete or other approved base extending not less than three (3)
inches (76 mm) above the adjoining ground level.
6. When an water heater is located in an attic, attic-ceiling assembly,
floor-ceiling assembly, or floor-subfloor assembly where damage
may result from a leaking water heater, a watertight pan of corrosion
resistant materials shall be installed beneath the water heater with
a minimum three-quarter (3/4) inch (20 mm) diameter drain to an
approved location.