Laars Mascot FT COMBI-WALL Quick start guide

Laars
Brand
Laars
Model
Mascot FT COMBI-WALL
Type
Quick start guide

This manual is also suitable for

Page 1
1346F-NH
MASCOT FT COMBI
& HEAT ONLY.
QUICK START GUIDE
COMBI -WALL
COMBI -FLOOR
HEATING ONLY
Pages 1 - 6
and pages 12-13
Pages 7 - 11
and pages 12-13
Page 2
LAARS Heating Systems
6


Set 
 
P-920C
     

 

  
 
°


 

6


Set 
 
P-920C
     

 

  
 
°


 

To exit at the end of any step, press the Mode buon.
COMBI MODELS ONLY
Page 3
MASCOT FT

 
 



 

D

   

°




To exit at the end of any step, press the Mode buon.
COMBI MODELS ONLY
Page 4
LAARS Heating Systems
COMBI MODELS ONLY
Page 5
MASCOT FT
COMBI MODELS ONLY
Page 6
LAARS Heating Systems
To exit at the end of any step, press the Mode buon.
COMBI MODELS ONLY
Page 7
MASCOT FT
To exit at the end of any step, press the Mode buon.
HEATING ONLY MODELS
Page 8
LAARS Heating Systems
HEATING ONLY MODELS
Page 9
MASCOT FT
HEATING ONLY MODELS
Page 10
LAARS Heating Systems
To exit at the end of any step, press the Mode buon.
HEATING ONLY MODELS
Page 11
MASCOT FT
To exit at the end of any step, press the Mode buon.
HEATING ONLY MODELS
Page 12
LAARS Heating Systems
COMBI AND HEATING ONLY MODELS
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 4296C
The FT Series, Heating Only, Gas Conversion Kit
pg 3 of 4
Figure C
Table B DIP Switch Settings
MBH 80 100 120 140 N/A 199
9.
Per Table B, set DIP Switch
5 to OFF
for LP Propane.
10.
Turn ON the GAS and WATER supply to the FT.
11.
Turn ON the FT.
12.
Connect a manometer to the manifold pressure port. For dual port manometers, use the positive pressure
side. Check for proper manifold gas pressure. Refer to Table C.
ON OFF
MIN Fire Normal Operation
MAX Fire Normal Operation
NG Natural LP Propane
3” Vent Size
2” Vent Size
ON OFF ON OFF ON
ON
OFF ON ON OFF OFF
ON
OFF OFF OFF ON ON
ON
Figure D
Gas Valve for 80 to 140 MBH
Gas Valve for
199 MBH
The gas valve on
the smaller models is
mounted vertically.
Manifold Pressure Port
Manifold Pressure Port
DO
NOT
CHANGE
REFERENCE
ONLY.
Table C
Manifold pressure Propane Gas (LP) Natural Gas (NG)
MFTHW 80/100
-0.102
˝
WC -0.102
˝
WC
0.00
˝
WC 0.00
˝
WC
MFTHW 120/140
-0.216
˝
WC -0.216
˝
WC
0.00
˝
WC 0.00
˝
WC
MFTHW 175
-0.169
˝
WC -0.129
˝
WC
-0.015
˝
WC -0.015
˝
WC
MFTHW 199
-0.173WC -0.134
˝
WC
-0.015
˝
WC -0.015
˝
WC
CO
2
value
Propane Gas (LP) Natural Gas (NG)
2˝ VENT 3˝ VENT 2˝ VENT 3˝ VENT
MFTHW 80/100
120/140/175/199
9.5~11% 8.5~10.5%
9~10.5 % 8~10%
Refer to the below table.
Manifold pressure Propane Gas (LP) Natural Gas (NG)
MFTHW 80/100
-0.102
˝
WC -0.102
˝
WC
0.00
˝
WC 0.00
˝
WC
MFTHW 120/140
-0.216
˝
WC -0.216
˝
WC
0.00
˝
WC 0.00
˝
WC
MFTHW 175
-0.169
˝
WC -0.129
˝
WC
-0.015
˝
WC -0.015
˝
WC
MFTHW 199
-0.173WC -0.134
˝
WC
-0.015
˝
WC -0.015
˝
WC
CO
2
value
Propane Gas (LP) Natural Gas (NG)
2˝ VENT 3˝ VENT 2˝ VENT 3˝ VENT
MFTHW 80/100
120/140/175/199
9.5~11% 8.5~10.5%
9~10.5 % 8~10%
Refer to the below table.
13.
Establish a call for heat. You may need to disconnect the outdoor reset if you are making this gas
conversion during warm weather.
For details, reference Section 4.18 or 4.19 of
your Installation and Operating Manual.
Shown in this example are the DIP switch settings
for a model 140 using Natural Gas and 3” Venting
and in Normal Operation.
175
Page 13
MASCOT FT
COMBI AND HEATING ONLY MODELS
Page 14
LAARS Heating Systems
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Page 15
MASCOT FT
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Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583
Headquarters: 20 Industrial Way, Rochester, NH, USA 03867 • 603. 335. 6300 • Fax 603. 335. 3355
9 Brigden Gate, Halton Hills, Ontario, Canada L7G 0A3 • 905.203.0600 • Fax 905. 636.0666
www.Laars.com Litho in U.S.A. © Laars Heating Systems 1801 Document 1346F
Mascot FT
COMBI -WALL
COMBI -FLOOR
HEATING ONLY
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Laars Mascot FT COMBI-WALL Quick start guide

Laars
Brand
Laars
Model
Mascot FT COMBI-WALL
Type
Quick start guide
This manual is also suitable for
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