Laars MASCOT FT MFTCW, Инструкция по установке и эксплуатации

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LAARS Heating Systems
Page 30
4.13 Natural Gas to Propane Conversion Laars Kit Document #4288
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www.Laars.com
Litho in U.S.A. © Laars Heating Systems 1503 Document 4288
800.900.9276
•
Fax 800.559.1583
(Customer Service, Service Advisors)
20 Industrial Way, Rochester, NH 03867
•
603.335.6300
•
Fax 603.335.3355 (Applications Engineering)
1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8
•
905.238.0100
•
Fax 905.366.0130
www.Laars.com
Document 4288
M
ascot FT Gas Conversion Kit
pg 1 of 4
The Laars Mascot FT condensing gas boiler is
confi gured for Natural Gas (NG) from the factory.
If your gas supply is Propane Gas (LP), your boiler
can be converted to burn propane gas as follows:
NOTICE
The Natural Gas to Propane Conversion Kit (# R20770)
included with the Mascot FT, is intended only for altitudes
less than 3000 ft. If your installation altitude is greater than
3000 ft, then please refer to Section 4.12 of this Manual.
The Kit is supplied in a bag attached to the combination
boiler. If your Mascot FT does not have the bag containing
the conversion kit, a replacement kit can be obtained.
Contact the manufacturer at the address below and
request a replacement conversion kit.
WARNING
This conversion kit shall be installed by a qualifi ed service
agency in accordance with the manufacturer’s instructions
and all applicable codes and requirements of the authority
having jurisdiction. The information in these instructions
must be followed to minimize the risk of fi re or explosion
or to prevent property damage, personal injury or death.
The qualifi ed service agency is responsible for the proper
installation of this kit. The installation is not proper and
complete until the operation of the converted appliance
is checked as specifi ed in the manufacturer’s instructions
supplied with the kit.
Installation must conform to local codes and the latest
edition of the National Fuel Gas Code, ANSI Z223.1 and
CAN-B149.1. Failure to follow instructions could result in
serious injury or property damage.
The qualifi ed agency performing this work assumes
responsibility for gas conversion.
CAUTION
This combination boiler has already been set to burn natural
gas, but can be converted to burn LP gas. Before placing the
combination boiler into operation, verify that the type of gas
supplied to your combination boiler.
To convert from natural gas
to propane gas
Steps 1 thru 21
1.
Turn OFF the Mascot FT. The ON / OFF button
is located at the bottom left of the Control Display.
2.
Turn
OFF
the GAS and WATER supply to the
Mascot FT (valves are located on the plumbing pipes.)
3.
Using a Phillips screwdriver, remove the 4 screws on the
front cover. See Figure A.
4.
Locate the Gas Inlet Pipe at the top left of the unit as is
shown in Figure A, and loosen the Brass Fittings at both
ends of the Gas Inlet Pipe.
5.
Completely un-thread the Brass Fitting on the right, and
then carefully swing the Gas Inlet Pipe downward just
enough so that it is out of the way. See Figure B.
6.
Remove the existing Natural Gas orifi ce. Save the
packing for re-use. See Figure C.
7.
Replace the old Orifi ce with the new Orifi ce for LP
(propane) gas. Re-use the packing from previous.
8.
Return the Gas Inlet Pipe to its original position and
tighten both of the Brass Fittings.
Model Natural Gas (NG) Orifi ce Propane Gas (LP) Orifi ce
MFTCW140
0.255˝ (6.5mm) 0.191˝ (4.85mm)
ON / OFF
Table A. Gas Conversion Parts
H2373800-
Kit # R20770 H2373800-
SECTION 4. Installation
Orifices (Gas Line Nozzles)