LAARS Mighty Therm2 MT2V (Sizes 500–2000 MBTU/h) - Install and Operating Manual - Manual (Page 3)

Mighty Therm 2
Page 3
SECTION 1.
General Information
USING THIS MANUAL – Because Mighty
Therm2 Boilers and 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 all
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.
In the Commonwealth of Massachusetts, this app-
liance must be installed by a licensed plumber or gas fitter.
WARNING
The Mighty Therm2 hydronic boiler or water heater
must be installed in accordance with the procedures
detailed in this manual, or the Laars Heating Systems
warranty may 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/NFPA54. In Canada, the installation must
conform to the latest edition of the Natural Gas
and Propane Installation Code, CSA B149.1 and/or
local codes. Where required by the authority having
jurisdiction, the installation of Laars appliances must
conform to the Standard for Controls and Safety
Devices for Automatically Fired Boilers, ANSI/
ASME CSD-1. Any modifications to the unit, 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 Mighty Therm2 copper tube 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 issues or
questions regarding this equipment. Experience has
shown that most operating issues are caused by improper
installation.
The Mighty Therm2 appliance is protected against
over pressurization. A pressure relief valve is fitted to
all appliances. It is installed on the outlet header, at the
water outlet of the appliance.
IMPORTANT: The inlet gas pressure to the appliance
must not exceed 13" W.C. (3.2kPa).
All installations must be made in accordance with:
1). In the U.S., the " National Fuel Gas Code"ANSI
Z223.1/NFPA54, Latest Edition and all applicable local
codes as required by the Authorities Having Jurisdiction
(AHJ), or
2). In Canada, the "Natural Gas and Propane
Installation Code", CSA B149.1, latest edition and
all applicable local codes as required by the AHJ.
All electrical wiring is to be done in accordance with:
1). In the U.S., the "National Electrical Code"
(NEC), ANSI/NFPA 70, latest Edition and all applicable
local codes as required by the AHJ, or
2). In Canada, the “Canadian Electrical Code - Part
1”, CSA STD. C22.1 and all applicable local codes as
required by the AHJ.
This appliance must be electrically grounded in
accordance with the applicable codes and standards
referenced above.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
M T 2 A C K 1
SERIES
M T 2
SIZE
0 5 0 0
0 7 5 0
1 0 0 0
1 2 5 0
1 5 0 0
1 7 5 0
2 0 0 0
REVISION
1 - FIRST
REV
OPTIONS
CODE
X - STD
J - CSD-1,
GAP,
FM
USAGE
H - HYDRONIC
V - VOLUME WATER
FUEL
N - NATURAL
P - PROPANE
PUMP
OPTIONS
X - NO PUMP
H - PUMP MOUNTED
TACO, HARD
WATER (MT2V)
N - PUMP MOUNTED,
TACO, NORMAL
WATER (MT2V, MT2H)
S - PUMP MTD, TACO
SOFT WATER PUMP
(MT2V)
C - PUMP MOUNTED
B&G, HARD
WATER (MT2V)
B - PUMP MOUNTED,
B&G, NORMAL
WATER (MT2V, MT2H)
D - PUMP MTD, B&G
SOFT WATER PUMP
(MT2V)
ALTITUDE
A - 0' – 10,000'
LOCATION
C - INDOOR/
OUTDOOR
FIRING
MODE
K - 2-Stage
HEAT EXCHANGER
B - GLASS-LINED CAST IRON/
COPP/BRZ TRIM (std.MT2V)
C - GLASS-LINED CASTIRON/
COPP. (std.MT2H, n/a MT2V)
N - GLASS-LINED CAST IRON/
CU-NICKEL (n/a MT2V)
P - GLASS-LINED CAST IRON /
CU-NICKEL, BRZ TRIM
HLW STAMP (MT2V only)
2 - GLASS-LINED CAST IRON/
COPPER / BRZ TRIM
5 - GLASS-LINED CAST IRON/
CU-NICKEL / BRZ TRIM