Chapter 4: Installation Instructions; Installation Warnings And Requirements; Appropriate Use Of The Boiler; Prerequisite System Flushing - Watts AERCO EXT Installation, Operation & Maintenance Manual

Modulex EXT Commercial Series

CHAPTER 4: Installation Instructions

CHAPTER 4: INSTALLATION INSTRUCTIONS

4.1 Installation Warnings and Requirements

4.1.1 Appropriate Use of the Boiler

This boiler MUST be used in the application for which it has been expressly designed. Any other
use shall be considered improper and therefore dangerous. This boiler is designed to heat water
at a temperature below the boiling point at atmospheric pressure.

4.1.2 Prerequisite System Flushing

Before installing the boiler, the following actions MUST be carried out by a competent engineer
or technician:
a) The whole system should be thoroughly flushed in order to remove any residual dirt or grime
which could compromise correct boiler operation.
b) Check that the boiler has been preset for operating with the gas type available. This is
verifiable via the data badge.
c) Check that the flue pipe has an adequate draft, does not have any constrictions or
obstructions, and that no other appliance's flue outlets have been fitted, unless the flue pipe
is serving more than one heating appliance, according to the specific standards and
regulations in force. The connection between the boiler and flue outlet can be made only
after this verification has been carried out.

4.1.3 Installation Personnel Qualifications

The appliance MUST be installed by a qualified engineer or technician, who complies with the
technical requirements, who, under his own responsibility, guarantees the compliance of the
standards according to the latest regulations.
The appliance must be positioned so that at least the minimum operational and servicing
clearances are provided. The boiler must be connected to a heating system which is compatible
to its performance and output.
FOR MASSACHUSETTS INSTALLATIONS: The boiler MUST be installed by a plumber or gas
fitter licensed within the Commonwealth of Massachusetts.

4.1.4 Carbon Monoxide Detector Installation

Installers MUST follow local regulations with respect to installation of Carbon Monoxide (CO)
Detectors. Also, they must follow the maintenance recommendations in this manual.

4.1.5 Installation Conformity Requirements

The installation MUST conform to the requirements of the authority having jurisdiction or, in the
absence of such requirements, to one of the following:
•
United States: Installation must conform to the requirements of the National Fuel Gas Code,
ANSI Z223.1/NFPA 54.
•
Canada: Installation must conform to the requirements of CAN/CSA-B149.1 - Natural Gas
and Propane Installation Code
•
Where required by the authority having jurisdiction, the installation must conform to the
Standard ASME CSD-1 Controls and Safety Devices for Automatically Fired Boilers.
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