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Table of Contents
I.
Pre-Installation .......................................8
II.
Unpacking the Boiler ............................. 9
III.
Installation ............................................10
A. Venting ............................................ 10
B. Combustion Air ...............................16
C. Water Treatment .............................. 18
D. Water Piping and Trim ....................19
E. Gas Piping ....................................... 21
F. Electrical ......................................... 25
G. Modular Systems ............................ 28
Left Side
6"
Left Side or Right Side
500
750
1000
1500
2000
* When 3 or more units are mounted side-by-side, front service clearance increases by 12"
and the rear service clearance increases by 24".
NOTE: Verify clearance with local codes.
Net AHRI Ratings
1. The Net AHRI Water Ratings shown are based on a piping and pickup allowance of 1.15.
2. The manufacturer should be consulted before selecting a boiler for installations having unusual piping and pickup
requirements, such as intermittent system operation, extensive piping systems, etc.
3. The ratings have been determined under the provisions governing forced draft boiler-burner units.
Minimum Clearance to Combustible Materials
Right Side
6"
* Recommended Clearance for Service *
24"
24"
24"
24"
24"
IV.
V.
VI.
VII.
VIII.
IX.
Front
Rear
24"
6"
Front
24"
24"
24"
24"
24"
4
H. Condensate Drains .......................... 38
System Start-up ....................................39
Lighting Instructions ............................42
Boiler Operational Sequence................44
Service .................................................. 45
Repair Parts ......................................... 52
Modulating Boilers ..............................70
Top
Flue Connector
6"
Rear
Top
24"
16"
24"
16"
24"
16"
24"
19"
24"
31"
18"
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