Laars FT Series - SECTION 1 Introduction; About this Installation Manual

The FT Series Floor Standing, Combination Boiler
Page 3
For details on Combustion Air
and Venting, (Pages 14-32)
For details on Gas
Connections/
Combustion Setup
(Pages 32-42)
For details on Plumbing for
Central Heat, (Pages 43-52)
For details on Plumb-
ing for Domestic Hot
Water, (Pages 43-45)
For details on Plumbing for
Condensate, (Page 53)
This manual provides
the information
necessary for the
installation, operation,
and maintenance of
the FT Series Floor
Standing, Combination
Boiler.
All installations must be made in
accordance with
1) American National Standard Z223.1/
NFPA54-Latest Edition “National Fuel Gas
Code” or
2) CSA B149.1 “Natural Gas and Propane
Installation Code” and with the requirement
of the local utility or other authorities having
jurisdiction. Such applicable requirements
take precedence over the general
instructions contained herein.
All electrical wiring is to be done in
accordance with the local codes, or in
the absence of local codes, with: 1) The
National Electrical Code ANSI/NFPA No.
70-latest Edition, or 2) CSA STD. C22.1
“Canadian Electrical Code - Part 1”. This
appliance must be electrically grounded in
accordance with these codes.
All application and
installation procedures
must be read and
reviewed completely
before proceeding with
the installation. Consult
the factory, or your local
factory representative, with
any problems or questions
regarding this equipment.
Experience has shown that
most operating problems
are caused by improper
installation.
For details on Electrical Connections,
(Pages 45-51 and 52-56)
SECTION 1 Introduction
1.1 About this
Installation Manual
*Note: Do NOT connect 24 V to the T/T or H-T/T terminals.
Only connect a dry contact closure to these terminals.
The H-T/T terminals can only be used
for a constant high temperature heating
zone or to place the boiler in temporary
high temperature “manual” operation.
L N
MAIN POWER
G L/ZC N
CH PUMP
G L N
DHW RECIRC PUMP
G
T / T
R 0-10V W
(+) INPUT (-)
O / S
SERIES
FT
L / B
F T
21 3
AC24V
OUTPUT
DHW RECIRC
SENSOR
LWC H-T/T
L N
MAIN POWER
G L/ZC N
CH PUMP
G L N
DHW RECIRC PUMP
G
T / T
R 0-10V W
(+) INPUT (-)
O / S
SERIES
FT
L / B
F T
21 3
AC24V
OUTPUT
DHW RECIRC
SENSOR
LWC H-T/T
L N
MAIN POWER
G L/ZC N
CH PUMP
G L N
DHW RECIRC PUMP
G
T / T
R 0-10V W
(+) INPUT (-)
O / S
SERIES
FT
L / B
F T
21 3
AC24V
OUTPUT
DHW RECIRC
SENSOR
LWC H-T/T