LAARS SUMMIT SMW-250 - Install and Operating Manual - Manual (Page 3)

SUMMIT BOILER OR WATER HEATER Page 3
SECTION 1.
General Information
USING THIS MANUAL – Because the
SUMMIT SMB-200/250 Boilers and SMW-200/250
Water Heaters are identical appliances, with the
exception of materials of manufacture, labels and
ultimate use application, this manual provides
information for the proper installation, operation
and maintenance of both products. Where
differences exist between the application of the
appliances and their operation, the sections
pertinent to only one appliance or the other will be
so identified.
WARNING
The SUMMIT hydronic, condensing, boiler or water
heater must be installed in accordance with the
procedures detailed in this manual, or the Laars
Heating Systems warranty will be voided. The
installation must conform to the requirements of the
local jurisdiction having authority, and, in the United
States, to the latest edition of the National Fuel Gas
Code, ANSI Z223.1. In Canada, the installation must
conform to the latest edition of CAN/CGA-B149.1
Natural Gas Installation Code or CAN/CGA-B149.2
Propane Gas Installation Code, and/or local codes.
Any modifications to the boiler, its gas controls, or
wiring may void the warranty. If field conditions
require modifications, consult the factory
representative before initiating such modifications.
1.1 Introduction
This manual provides information necessary for
the installation, operation, and maintenance of Laars
Heating Systems SUMMIT copper tube, condensing,
appliances. Read it carefully before installation.
All application and installation procedures
should be reviewed completely before proceeding
with the installation. Consult the Laars Heating
Systems factory, or local factory representative, with
any problems or questions regarding this equipment.
Experience has shown that most operating problems
are caused by improper installation.
Direct vent-sealed combustion:
The SUMMIT appliance does not and should not
get combustion air from inside the building. All
combustion air is drawn in from outdoors through a 3-
inch or 4-inch diameter plastic pipe. PVC, ABS or
CPVC pipe is used for air intake. EXHAUST
VENTING may only be done in CPVC or AL29-4C
Stainless Steel Venting Systems that comply with
UL Standard 1738.
No chimney....flue....or draft inducer required.
Because this is a sealed combustion, forced draft
appliance, it does not require, and must not be
connected to a chimney, existing venting system, or
draft inducer.
Caution
Connection of this vent to a chimney, existing
venting system, or draft inducer will result in poor
and possibly dangerous operation.
The supplied vent terminations are designed to
be installed through the nearest outside wall.
The SUMMIT appliance is protected against
over pressurization. A pressure relief valve is fitted to
all appliances. It is installed in the dedicated fitting on
the top of the appliance.
IMPORTANT: The inlet gas pressure to the
appliance must not exceed 13" WC.
A high quality circulator is built into the
SUMMIT appliance and will provide sufficient head
pressure and volume to circulate water to the heating
system or storage tank(s) (see Table 3).
All installations must be made in accordance
with the 1). American National Standard Z223.1-
Latest Edition “National Fuel Gas Code” or 2). CAN/
CGA 1-B149 “Installation Codes for Gas Burning
Appliances and Equipment” 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.
Figure 1. Assembly View of the Unit.