Direct Fired Heater Videos - Modular Series

Direct Fired Heater Videos - Modular Series

Modular A Series Heater and Blower Belt Replacement.    Please note that Belt-Driven products are no longer produced with the advancements of direct drive plenum blowers.

Video Transcript
0:00
[Music]
0:04
loosen the long bolts holding the motor
0:06
assembly in place
0:09
move the platform by pushing slightly up
0:12
and forward so the platform travels
0:14
along the groove this will loosen the
0:17
belt
0:18
remove the belt by sliding it off the
0:20
polytrack
0:22
make any necessary adjustments and
0:24
reattach the belt by sliding it back
0:26
onto the pulley tracks
0:29
check pulley alignment to ensure motor
0:32
life and proper belt where
0:35
move the motor assembly back by pushing
0:37
down and back to move along the groove
0:40
retighten the bolts and order to secure
0:43
the motor and tighten the belt
0:45
check belt tension deflection should be
0:49
one sixty fourth of an inch per inch of
0:51
belt span as shown
 

Start Up Procedures - Modular A Series Direct Fired Heater, Pre 2016 Non-Digital Controls

Video Transcript
0:03
ensure all field installed modules are
0:06
fully siliconed and all blower parts are
0:08
correctly fastened check that the gas
0:10
pressure to the unit is correct and that
0:12
all lines have been purged also verify
0:14
that the unit is set level if the blower
0:17
is operating in the opposite direction
0:18
for three-phase power any two power
0:21
leads can be interchanged to reverse the
0:23
motor direction for single-phase check
0:26
the motor wiring diagram with a motor
0:28
operating in the correct direction
0:30
observe operation and check for any
0:32
unusual noises
0:35
use the tachometer as shown to check the
0:38
RPMs of the blower
0:40
the RPM should not exceed those given in
0:44
this chart
0:48
in order to verify am draw first locate
0:52
the motor full load amps on the
0:54
nameplate
0:56
if the unit is not equipped with a VFD
0:59
measure the full load amps off the motor
1:01
starter leads
1:06
if the unit is equipped with a VFD
1:09
locate the channel for actual motor
1:11
current and monitor from there in this
1:14
case it is channel P 508 using a
1:19
differential pressure meter measure the
1:21
pressure drop is shown take multiple
1:23
measurements to ensure accuracy
1:27
the pressure drop should be between
1:29
point one five and point eight inches
1:31
water column
1:32
if outside this range adjust rpm and
1:35
ensure profile plates are intact and
1:38
working correctly check the flame signal
1:40
by measuring the voltage off the tabs on
1:42
top of the flame safety controller flame
1:45
is present when the voltmeter reads
1:47
between six and 18 volts DC ideal flame
1:50
is set at 12 volts DC and above to set
1:55
high fire first locate the design
1:57
manifold pressure in this case it is 1.5
1:59
inches water column to force the unit
2:02
into high fire remove the number-four
2:04
lead from the amplifier if it is a
2:06
discharge temperature controlled unit
2:08
remove both leads 2 & 4 if it is a space
2:11
temperature controlled unit unscrew and
2:13
remove the cap for the high fire bypass
2:15
screw
2:15
adjust the set screw with a screwdriver
2:18
until the compound gauge reads the
2:20
appropriate design manifold pressure
2:24
when the appropriate prey
2:26
obtained replace the leads onto the
2:28
amplifier
2:30
in order to set low fire first remove
2:33
the number-5 lead from the amplifier
2:35
next unscrew the cap that covers the low
2:38
fire bypass group
2:41
adjust the screw into
2:43
burner shows a thin blue flame with no
2:45
dark spots across the entire length of
2:47
the burner
2:51
one slow fire has been said replaced the
2:54
lead back onto the amplifier
2:58
the high temperature limit is factory
3:00
set at 170 degrees Fahrenheit this
3:03
should not be adjusted and less
3:04
specified
3:06
the intake air thermostat can be
3:08
adjusted to meet your requirements if
3:10
cooling is equipped the cooling
3:12
thermostat can be adjusted to meet
3:13
requirements as well
3:18
a free stat is included in most units
3:20
and his factory set at 35 degrees
3:22
Fahrenheit verify this setting startup
3:26
is not complete until the entire
3:27
checklist is completed and returned to
3:29
the factory or an authorized dealer
 

Setting High Fire, Modular A Series Direct Fired Heaters Sizes 1 to 3, Non-Digital Controls (pre-2016)

Video Transcript
0:00
[Music]
0:04
in order to set high fire the first
0:08
thing we need to do is force the unit
0:10
into high fire to do that
0:13
the first step is to determine whether
0:15
you have a discharge temp control or
0:17
space temp control unit if you have a
0:21
discharge temp control unit we're going
0:23
to remove wire four from the amplifier
0:25
if it's a space temp control unit we're
0:27
going to remove wires two and four from
0:30
the amplifier
0:38
you
0:41
removing these wires forces the unit
0:44
into high fire next we will want to
0:46
locate the gas manifold pressure on the
0:48
nameplate underneath the gas manifold
0:51
right down here on the nameplate you
0:54
will see the gas manifold pressure for
0:56
either natural gas or propane on this
0:59
unit it is 1.5 inches
1:03
to adjust the high fire to the gas
1:05
manifold pressure we will first unscrew
1:08
the cap from the gas valve
1:16
underneath a cap will be your adjustment
1:21
from here we can adjust the gas pressure
1:23
to 1.5 inches water column and then we
1:27
check on our gas pressure gauge that it
1:29
meets our design manifold pressure it's
1:32
a little bit high so we'll adjust it
1:34
again to show 1.5 inches water column
 

Setting Low Fire, Modular A Series Direct Fired Heaters Sizes 1 to 3, Non-Digital Controls (pre-2016)


Video Transcript
0:03
remove wire number 5 from the amplifier
0:06
this is low voltage adjust the bypass
0:11
crew to get your minimal low fire after
0:15
adjusting the screw visually check the
0:17
burner and make sure there's a thin blue
0:18
flame across the entire length of it if
0:21
there's not a thin blue flame readjust
0:24
the screw until there is repeat this
0:26
process until there's a solid blue flame
0:28
and then low fire is set