P/N 42-9450 8/08 Copyright 2008 Hydrotherm
Page 4 KN INSTALLATION AND OPERATION INSTRUCTIONS
Hazard icons
You will nd the following icons
throughout this manual.
(English/French)
The WARNING icon indicates
a hazard that can cause severe
personal injury, death or
substantial property damage.
The CAUTION icon indicates a
hazard that will or can cause minor
personal or property damage.
The NOTICE icon calls out special
instructions that are important, but
are not related to hazards.
Other manuals
You must read and follow this
manual, the KN Vent/Air manual,
the KN Control manual and all
additional materials supplied with
the boiler. Failure to do so can
result in severe personal injury,
death or substantial property
damage.
Start-up/service history
Before leaving the installation site
after start or service, ll out the
Start-up/service history information
on the back page.
Contents
Customer service and technical support
Please direct all questions to your Hydrotherm distributor or
contact the Hydrotherm Customer Service Department at:
260 North Elm Street West eld, MA 01085
Phone (413) 564-5515
Always include the model and serial numbers from the rating
plate of the boiler in question.
Claims for damage or missing components must be led imme-
diately against the transportation company by the consignee.
1 Read before beginning the installation . . . . 5
2 Boiler ratings and speci cations . . . . . . . . . 6
3 Installation site preparation . . . . . . . . . . . 7
4 Prepare the boiler . . . . . . . . . . . . . . . . . 10
5 Water piping . . . . . . . . . . . . . . . . . . . . 11
6 Gas piping . . . . . . . . . . . . . . . . . . . . . . 18
7 Wiring a single boiler . . . . . . . . . . . . . . . 20
8 Control setup . . . . . . . . . . . . . . . . . . . . 25
9 Vent piping (and air piping when used) . . . 28
10 Condensate drain line . . . . . . . . . . . . . . 29
11 Fill and test the system . . . . . . . . . . . . . . 30
12 Starting the boiler . . . . . . . . . . . . . . . . . 32
13 Annual start-up . . . . . . . . . . . . . . . . . . 41
14 Maintenance . . . . . . . . . . . . . . . . . . . . 42
15 Replacement parts . . . . . . . . . . . . . . . . 46
16 Appendix A — suggested wiring . . . . . . . 48
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