Specifications - Laars FTCF140 Installation And Operation Instructions Manual

combustion readings. At this point, just record the CO 2 readings at MAX Fire. Do NOT attempt to adjus
CO 2 at MAX Fire. ONLY in MIN Fire, so...
18.
Per Table B for MIN Fire , change dip switch 6 to OFF and 7 to ON. The unit will cycle down to MIN Fire.
Page 6
19.
WAIT for your combustion analyser to stabilize. Then check the CO 2 measurement at MIN fi re. Refer to

Specifications

Table D for acceptable MIN fi re combustion readings.
2.2
20.
If CO 2 readings in Max Fire and MIN fi re are acceptable, then skip ahead to Step 23. If not, then open the
Model Name
Gas Valve Adjustment Port by removing the cap screw with a 4mm Allen wrench. See Figure E.
21.
Then use the 4 mm Allen wrench to make a minor adjustment (1/8 turn) to either increase or decrease CO 2
Gas Input Rate
Hot Water Capacity
Installation
Flue System
Vent Run
Gas Supply Pressure
Manifold Pressure
Power Supply
Ignition System
Burner System
Gas Valve System
Minimum Flow Rate
Dimensions
Shipping Weight
Sub Heat Exchanger Water Capacity(DHW)
Main Controller / Control Panel
Water Pressure
Connection Sizes
Materials
Safety Devices
MAX
MIN
Manifold pressure
35°F Rise
45°F Rise
MAX Fire
77°F Rise
FTCF140
MIN Fire
MAX Fire
FTCF199
MIN Fire
Table C
NG
LP
Gas Type
value
CO
2
Vent size
MAX Fire
Min fire
FTCF140
FTCF140
Low fire
MIN Fire
MAX Fire
Main Supply
FTCF199
MIN Fire
Maximum Power
20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355
Consumption
Table D
1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.013
Cold Water Inlet / Hot
Water Outlet
Space Heating
Supply / Return
Gas Inlet
Casing
Heat Exchanger
FTCF140
140,000 Btu/h
28,000 Btu/h
'NG' type combustibility
7.1 Gal
2" VENT 3" VENT
5.5 Gal
" "
-0.15 WC -0.216 WC
3.2 Gal
" "
WC 0.002 WC
0
Indoor / Floor stand type
"
-0.134 WC
Sealed Combustion Direct / Single / Concentric Vent/ SideWall Vent
"
-0.015 WC
2"(50ft) , 3"(100ft) Schedule 40 CPVC, PP
3.5" WC to 10.5" WC
8.0" WC to 13" WC
'NG' type combustibility
LP
2" VENT 3" VENT
2" VENT 3" VENT
8.5~10.5%
-0.15" WC -0.216" WC
8~10%
0.1" WC 0.079" WC
8.5~10.0%
120V 60Hz / 6A
800.900.9276 • Fax 800.559.1583
8~10%
Direct Electronic Ignition / Automatic Flame Sensing
www.Laars.com
Single Orifice Premixed Fuel Modulation Ceramic Infrared
Combination modulating (Current proportional)
0.5 GPM
W15.7" - H52.4" – D26.7"
230 lbs
Under 15 Gallon
GTX-920CP / P-920C
Min 15 ~ Max 150 PSI
3/4" NPT
1" NPT
1/2" NPT
Cold Rolled Carbon Steel
Primary Heat Exchanger : Stainless Steel
Sub Heat Exchanger : Stainless Steel
Flame Rod, Overheat Cut Off Device, Gas Valve Operation
Detector, Exhaust Temperature High Limit Switch, Water
Temperature High Limit Switch
'LP' type combustibility
2" VENT 3" VENT
"
-0.15 WC -0.216
"
0.1 WC 0.079
"
-0.173 WC
"
-0.015 WC
'LP' type combustibility
NG
2" VENT 3" VENT
2" VENT 3" VENT
9.5~11 %
-0.15" WC -0.216" WC
9~10.5 %
0" WC 0.002" WC
9.5~11 %
(Customer Service, Service Advisors)
9~10.5 %
160W
( 104 kg )
"
WC
"
WC
(Applications Enginee
pg