Brute FT Series, Руководство пользователя

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Page 36
WARNING
4.11 Gas Setup and Adjustment
For the Step by step process to measure CO
2
values on the FT, please refer to Steps 12 thru
Step 22 in Section 4.13 of this Installation Manual.
Table 14. CO2 Values
Table 15. Manifold Pressures
Installer is required to verify combustion settings as part
of the installation process.
Standard Factory Setting is for MAX Fire. 9.0%
CO2 @ 0-2,000 ft altitude (Natural Gas).
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 4387 The FT Series, Heating Only, Gas Conversion Kit
pg 3 of 4
Table B DIP Switch Settings
MBH 100 140 199
These 3 bottom switches must be set per unit SIZE.
9.
Per Table B , s et 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
Figure D
Gas Valve for
100 & 140 MBH
Gas Valve for
199 MBH
The gas valve on
the smaller models is
mounted vertically.
Manifold Pressure Port
Manifold Pressure Port
Table C
Manifold pressure Propane Gas (LP) Natural Gas (NG)
MFTHW 100
-0.075 ˝ WC -0.070 ˝ WC
-0.003 ˝ WC -0.000 ˝ WC
MFTHW 140
-0.130 ˝ WC -0.100 ˝ WC
-0.004 ˝ WC -0.002 ˝ WC
MFTHW 175
-0.169 ˝ WC -0.129 ˝ WC
-0.015 ˝ WC -0.015 ˝ WC
MFTHW 199
-0.169 ˝ WC -0.129 ˝ 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 100
-0.075 ˝ WC -0.070 ˝ WC
-0.003 ˝ WC -0.000 ˝ WC
MFTHW 140
-0.130 ˝ WC -0.100 ˝ WC
-0.004 ˝ WC -0.002 ˝ WC
MFTHW 175
-0.169 ˝ WC -0.129 ˝ WC
-0.015 ˝ WC -0.015 ˝ WC
MFTHW 199
-0.169 ˝ WC -0.129 ˝ 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.
Shown is a
Model 140
with 3"
Venting and using
Natural Gas
NOTE : Values are in the range of -.001 to -.35 Inches WC are indicative
of proper set-up. If your readings are outside this range, please call
technical support.
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 4387 The FT Series, Heating Only, Gas Conversion Kit
pg 4 of 4
Figure E (Conversion label)
14.
Setup your combustion analyzer and place the sensor into the combustion test port
15.
Per Table B for Max Fire
,
change dip switch 6 to ON and 7 to OFF. The unit will cycle up to MAX fi re.
16.
WAIT for your combustion analyzer to stabilize. This may take up to 3 minutes depending on your
combustion analyzer. Then measure the CO
2
for MAX fi re. Refer to Table D for acceptable MAX fi re
combustion readings Do NOT adjust CO2 at MAX Fire. ONLY in MIN Fire, so...
17.
Per
Table B for MIN Fire
, change dip switch 6 to OFF and 7 to ON. The unit will cycle down to MIN Fire.
18.
WAIT for your combustion analyzer to stabilize. Then measure the CO
2
for MIN fi re. Refer to Table D for
acceptable MIN fi re combustion readings
19.
Open the Gas Valve Adjustment Port by removing the cap screw with a T15 Star/Torx screwdriver.
20.
Then use the T15 Star/Torx to make a minor adjustment (1/8 turn) to either increase or decrease CO
2
.
21.
It may be necessary to go back and forth between HI Fire and LOW Fire several times (and making
adjustments only at LOW Fire), before CO2 at both are within acceptable levels. Be sure to put the
adjustment port cap screw back onto the valve when done.
22.
Once the CO2 and manifold pressure measurements for both MIN and MAX Fire are acceptable, set DIP
switches 6 and 7 to the OFF position for Nominal Fire (normal operation).
23.
Write in the correct conversion date and the technicians name to the included gas conversion sticker. See
Figure E. Then apply that sticker adjacent to the rating plate.
24.
Put the boiler cover back on and assemble/tighten the 4 screws that hold the cover in place.
This unit was converted on ____/____/___to _____gas
with kit #____________by______________________
(name and company __________________________
accountable)_________________________________
___________________________________________
Cette unité a été converti ____/____/____ten ______gaz
en utilisant le kit numéro _____ par______________
(nom et société_________________________________
responsable)___________________________________
_____________________________________________
H22415900
Manifold pressure Propane Gas (LP) Natural Gas (NG)
MFTHW 100
-0.075 ˝ WC -0.070 ˝ WC
-0.003 ˝ WC -0.000 ˝ WC
MFTHW 140
-0.130 ˝ WC -0.100 ˝ WC
-0.004 ˝ WC -0.002 ˝ WC
MFTHW 175
-0.169 ˝ WC -0.129 ˝ WC
-0.015 ˝ WC -0.015 ˝ WC
MFTHW 199
-0.169 ˝ WC -0.129 ˝ 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.
Table D
All sizes
(and all altitudes)
All sizes
and all altitudes
NOTE : Values in Table 15 in the range of -.001 to -.35 Inches WC are indicative of proper
set-up. If your readings are outside this range, please call technical support.