Alpine Installation, Operating, and Service Instructions

103448-02 - 6/13 71
VIII. Electrical
A. General. Install wiring and electrically ground boiler
in accordance with authority having jurisdiction or, in
the absence of such requirements, follow the National
Electrical Code, NFPA 70, and/or CSA C22.1 Electrical
Code.
B. A separate electrical circuit must be run from
the main electrical service with an over-current
device/disconnect in the circuit. A service switch is
DANGER
Positively assure all electrical connections are unpowered before attempting installation or service of
electrical components or connections of the boiler or building. Lock out all electrical boxes with padlock
once power is turned off.
WARNING
Failure to properly wire electrical connections to the boiler may result in serious physical harm.
Electrical power may be from more than one source. Make sure all power is off before attempting any
electrical work.
Each boiler must be protected with a properly sized over-current device.
Never jump out or make inoperative any safety or operating controls.
The wiring diagrams contained in this manual are for reference purposes only. Each boiler is shipped with
a wiring diagram attached to the front door. Refer to this diagram and the wiring diagram of any controls
used with the boiler. Read, understand and follow all wiring instructions supplied with the controls.
NOTICE
This boiler is equipped with a high water temperature limit located inside the internal wiring of the boiler.
This limit provides boiler shutdown in the event the boiler water temperature exceeds the set point of the
limit control. Certain Local Codes require an additional water temperature limit. In addition, certain types
of systems may operate at temperatures below the minimum set point of the limit contained in the boiler.
If this occurs, install an additional water temperature limit (Honeywell L4006 Aquastat). Wire as indicated in
the Electrical Section of this manual.
NOTICE
All wire, wire nuts, controls etc. are installer supplied unless otherwise noted.
recommended and may be required by some local
jurisdictions. Install the service switch in the line
voltage “Hot” leg of the power supply. Locate the
service switch such that the boiler can be shut-off
without exposing personnel to danger in the event of
an emergency. Connect the main power supply and
ground to the three (3) boiler wires (black, white and
green) located in the junction box at the inside top of
the boiler jacket.
IMPORTANT
This boiler is equipped with a feature that saves energy by reducing the boiler water temperature as the
heating load decreases. This feature is equipped with an override which is provided primarily to permit the
use of an external energy management system that serves the same function. THIS OVERRIDE MUST NOT
BE USED UNLESS AT LEAST ONE OF THE FOLLOWING CONDITIONS IS TRUE:
• An external energy management system is installed that reduces the boiler water temperature as
the heating load decreases.
• This boiler is not used for any space heating.
• This boiler is part of a modular or multiple boiler system having a total input of 300,000 BTU/hr or
greater.
• This boiler is equipped with a tankless coil.
This notice applies to Models ALP080B through ALP285B Only (does not apply to ALP399).