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Part number IWHA016A/1103
2
PLUS Line Instruction Manual Supplement
PLUS &
PLUS WATER HEATERS WITH GAS-FIRED WATER BOILERS
Contents
The following defined terms are used throughout this manual to bring attention to the presence of hazards of
various risk levels or to important information concerning the life of the product.
Indicates presence of hazards that will cause severe personal injury, death or substantial property
damage.
Indicates presence of hazards that can cause severe personal injury, death or substantial property
damage.
Indicates presence of hazards that will or can cause minor personal injury or property damage.
Indicates special instructions on installation, operation or maintenance that are important but not
related to personal injury or property damage.
Hazard definitions ............................................................................... 2
Please read before proceeding ........................................................... 2
1. Install system water piping ............................................................. 3
2. Install boiler-to-water heater piping ................................................ 6
3. Field wiring ....................................................................................... 8
4. Start-up ........................................................................................... 11
Hazard definitions
Please read before proceeding
Installer
Read all instructions before installing.
Follow all instructions in proper order
to prevent personal injury or death.
• This document is intended only as a supplement
to the Ultra Boiler Manual and PLUS Line manual.
It’s purpose is for connection of an Ultra boiler to
a PLUS Line water heater.
User
• This document is for use only by your qualified
heating installer/service technician.
• Please refer to the Ultra Boiler User’s Information
Manual for your reference.
• Keep this supplement near the boiler for use by
your installer or technician.
Follow the PLUS Line manual to install the PLUS water heater.
Ultra boilers must be installed as directed in the Ultra Boiler Manual and
supplements.
Failure to adhere to these guidelines can result in severe personal injury,
death or substantial property damage.