A.O. Smith UB-140 User Manual

0310 351
Innovation has a name.
Commercial Modular High
Efficiency Condensing Boiler
UB - 70/110/140
Upsilon
Installation and Service
Manual
These instructions should be retained by user.
8G.51.91.03/09.13 Changes reserved. E. & O. E.

A.O. Smith UB-140 Specifications

General

Brand	A.O. Smith
Model	UB-140
Category	Boiler
Language	English

Summary

5 Installation and mounting

5.1 Wall-mounted in line

Instructions for mounting boilers side-by-side on a wall.

5.2 Free-standing in line

Instructions for mounting boilers side-by-side on a free-standing frame.

5.3 Free-standing back-to-back

Instructions for mounting boilers back-to-back on a frame.

6 Hydraulic and gas pipe line system

6.1 Heating system

Information on pipe work headers, low velocity headers, and bends.

6.4 Gas line

Guidelines for installing the gas line according to regulations.

6.5 Condensate drain

Instructions for condensate drainage and safe disposal.

7 Flue gas system

7.5 Collective flue gas outlet

Details on collective flue gas outlet systems (under-pressure/over-pressure).

8 Electrical connections

8.1 External controls

Connecting On-Off, OpenTherm, and 0-10 Volt controls to the boiler.

9 Boiler control

9.3 Commissioning

Step-by-step guide for initial boiler setup and commissioning.

9.4 Setting the maximum flow water temperature with On/Off-control

9.5 Filling the heating system

10 Basic settings

11 Parameters

13 Inspection and maintenance

13.1 Maintenance intervals

13.2 Checks prior to commissioning

13.2.1 Emission check

13.2.2 Check O₂

13.3 Maintenance activities

Step-by-step guide for performing various maintenance tasks.

14 Error report

15 Warranty conditions

15.1 General warranty

15.2 Heat exchanger warranty

15.3 Conditions for installation and use

15.4 Exclusions

Annex A Technical specifications