LAARS Mascot LX MLXC 175 MBH - Install and Operating Manual - Manual (Page 5)

Mascot LX Boilers and Water Heaters Page 1
Figure 1. Opening the 100, 125, 150, 175, and 220
Figure 2. Model Nomenclature
2 3 4 5 6 7 8 9 10 11 12 13
L X A X N
SERIES
LAARS HEAT
EXCHANGER
LABEL
MASCOT
USAGE
H - HYDRONIC
C - COMBI
UNIT
SIZES
MBTU/h
5 0
7 5
1 0 0
1 2 5
1 5 0
1 7 5
2 2 0
FUEL
N - NATURAL
P - PROPANE
CONFIG
W - WALL
ALTITUDE
A - 0-10,000 FEET
REVISION
1 - FIRST
OPTIONS
X - STANDARD
L - LWCO
PUMP OPTIONS
N - WITH PUMP
1
M
1.1 Introduction
This manual provides information necessary for the
installation, operation, and maintenance of LAARS
Heating Systems Mascot LX 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.
All installations must be made in accordance with
1) American National Standard Z223.1/NFPA54-Latest
1.3 Rating Plate
The Rating Plate is located on the metal pan behind the
lower plastic panel. It contains Model Nomenclature,
Manufacture Date, Model Number, Serial Number,
Output Rating, and all other information pertaining to
your Mascot LX. .
1.2 To Open the Mascot LX
To open the Mascot LX for maintenance and servicing,
the upper and lower plastic panels are designed to 'pop'
off when they are pulled forward. See Figure 1 and
Figure 3 . This will expose the top metal panel which
covers the heat exchanger, and the lower panel which
holds the low voltage connections and covers the pump
and other lower components.
To remove these panels for further access into the
Mascot LX, there are two screws that hold each panel in
place. Remove the 2 screws on the upper panel and slide
the upper metal panel up and out. For the lower panel,
remove the 2 screws and hinge the lower metal panel
downward.
The center panel containing the On/Off Switch, Gauges,
and User Interface is not removable.
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.
Nomenclature
(1) Label
M = Mascot
(2-3) Series Designation
LX = Laars Heat Exchanger
(4) Usage
H = Modulating Boiler
C = Combination Boiler and Water Heater
(5) Configuration
W = Wall Hung
(6-8) Size
50 = 50,000 BTU/hr input
75 = 75,000 BTU/hr input
100 = 100,000 BTU/hr input
125 = 125,000 BTU/hr input
150 = 150,000 BTU/hr input
175 = 175,000 BTU/hr input
220 = 220,000 BTU/hr input
(9) Fuel
N = Natural Gas
P = LP Gas (propane)
(10) Altitude
A = Up to10,000 Feet: de-rate applies *
(11) Revision
1 = First version
(12) Options Code
X = Standard
L = Low water cutoff
(13) Pump Options
N = With Pump
1.4 Model Nomenclature
The Model Nomenclature is shown on your Rating Plate
and consists of a series of letters and numbers
( Nomenclature ) that further identifies the
characteristics of your Mascot LX. See Figure 2 .
* For high altitude applications, boiler must be
de-rated 4% per 1000 feet above 2000 feet.
*