SECTION 24: RAPID
®
2000-S
ERIES
S
TART
-U
P
P
ROCEDURES
91
7.
Check lifting brackets to make s
u
re they are tight and
sec
u
re before lifting heater.
OK __.
8.
For FR, AM models: CO2 sensor installed?
OK ____
The follo
w
ing proced
u
res reference pages and tables from the
2000-Series Installation, Operation and Ser
v
ice Man
u
al
(P/N RP121100NA). Contact the local RAPID
®
independent
distrib
u
tor or Rapid Engineering LLC for a man
u
al.
At Start-up:
Verify proper belt tension and shea
v
e alignment per instr
u
ctions
on Page 65, Section 20.2.1
.
OK _____.
Verify proper torq
u
e on all shea
v
es per table
on Page 66, Section
20.2.2
.
OK _____.
Air Temperature Sensin
g
:
1.
The sensing probe is factory mo
u
nted in the blo
w
er ho
u
s-
ing. (Ad
v
ance to next section.)
Electrical (
Page 43,
S
ec
t
ion 16
)
1.
Check all motor starters for proper o
v
erload settings. The
o
v
erload sho
u
ld not exceed F
u
ll Load Amps for the motor.
___________ A.
2.
What is the s
u
pply
v
oltage to the air handler?
Air Hander Off ____ #1____#2 ____ #3 ____
Air Hander On ____ #1____#2 ____ #3 ____
3.
Verify correct fan rotation. OK ______.
4.
What is total system c
u
rrent dra
w
?
Motor c
u
rrent dra
w
(B
u
rner Off)? _________.
B
u
rner and motor c
u
rrent dra
w
? _________.
5.
Compare all
v
ariable freq
u
ency dri
v
e (VFD) programming
parameters
w
ith specifications pro
v
ided on electrical
dra
w
ing. OK _____.
6.
For VFD systems, make s
u
re to set programming parame-
ters for proper o
v
erload protection.
(See VFD Instr
u
ction Man
u
al). OK _____.
7.
If more than one exha
u
st motor is
u
sed
w
ith one VFD,
each motor m
u
st ha
v
e its o
w
n o
v
erload protection.
OK _____.
Differential Pressure: (
Page 42,
S
ec
t
ion 15.5.1
)
1. In
order
to
v
erify proper airflo
w
across the b
u
rner, the dif-
ferential press
u
re across the profile plate needs to be
meas
u
red. Attach a manometer to the press
u
re test ports
w
here the press
u
re s
w
itch is attached and meas
u
re the
differential press
u
re
w
ith a manometer. This reading m
u
st
be 0.9 in
w
c +-0.1 in
w
c (2.24 +/- 0.25 mbar)
Record differential box press
u
re _______ in.
w
c/mbar
Burner Pressure: (
Page 42,
S
ec
t
ion 15.5.2
)
1. A
press
u
re tap bet
w
een the Maxitrol mod
u
lating
v
al
v
e and
the b
u
rner is
u
sed to meas
u
re negati
v
e airflo
w
at the
b
u
rner and to set high fire gas press
u
re. This tap co
u
ld
also be located on the Maxitrol
v
al
v
e itself, man
u
al sh
u
t off
v
al
v
e or “T” fitting. See
u
nit data plate on control enclos
u
re
door for high fire setting.
2.
Record b
u
rner press
u
re
w
ith inlet man
u
al gas
v
al
v
e off
and blo
w
ers on ______________ in
w
c/mbar
Gas Pipin
g
and Initial Pressure Settin
g
:
(
Page 42,
S
ec
t
ion 15.4
)
1.
Perform a press
u
re test on all gas s
u
pply lines to air han-
dler per local codes. OK _____.
2.
Verify s
u
pply press
u
re does not exceed maxim
u
m rated
gas press
u
re as stated on the rating plate. OK_____.
3.
Set the s
u
pply gas press
u
re at the step do
w
n reg
u
lator
(normally o
u
tside of the enclos
u
re if one is installed),
according to the rating plate inlet gas press
u
re specifica-
tions.
F
u
el Type: _______ Press
u
re: ___________.
4.
Only after performing steps 1-3, open the main gas
v
al
v
e
and close the man
u
al gas
v
al
v
e do
w
nstream of the MR
v
al
v
e. Set the b
u
rner s
w
itch to on. Verify pilot press
u
re,
and flame signal of 5.0 VDC. OK ______.
(To adj
u
st pilot flame, set pilot reg
u
lator to 1.0 in
w
c (2.5 mbar)
nat
u
ral gas or 0.5 in
w
c (1.25 mbar) L.P. ga
u
ge press
u
re.
5.
Open both man
u
al gas
v
al
v
es at air handler. Force the
b
u
rner into high fire.
See Page 68, Table 18
, “B
u
rner
Mode By Amplifier Type”. Read the gas press
u
re at the
MR
v
al
v
e and set according to the determined high fire
gas press
u
re in Table. The small cap scre
w
is for high fire
on MR212
v
al
v
e only. Take a reading of the temperat
u
re
rise. Temperat
u
re rise m
u
st be in accordance
w
ith
Page
69, Table 19
.
High Fire Discharge Temperat
u
re ______°F/°C
_______Manifold Press
u
re for Maxim
u
m Inp
u
t
(from rating plate)
_______B
u
rner Press
u
re
_______High Fire Gas Press
u
re Setting
There are three critical items to consider before adj
u
sting lo
w
fire:
A. Lo
w
fire adj
u
stment does not reg
u
late gas press
u
re.
B. If the lo
w
fire adj
u
stment scre
w
is set to maxim
u
m, high fire
reg
u
lation problems
w
ill occ
u
r.
C. The b
u
rner control system m
u
st be forced into lo
w
fire per
Maxitrol's instr
u
ction for the gi
v
en amplifier/temperat
u
re control
system.
See Page 68, Table 18
, “B
u
rner Mode By Amplifier Type”.
*
6.
Lo
w
fire is set at the MR212
v
al
v
e
u
sing the adj
u
stment
scre
w
u
nder the large cap scre
w
, or on the M611
v
al
v
e
u
sing the brass adj
u
sting scre
w
on the side. The b
u
rner
m
u
st be forced into lo
w
fire first. The lo
w
fire ribbon across
the b
u
rner m
u
st be adj
u
sted. OK________.
Once gas press
u
re and high/lo
w
fire adj
u
stments are made,
the gas set
u
p is completed. All taps and instr
u
ments m
u
st be
remo
v
ed and all caps and pl
u
gs m
u
st be replaced.
Please leave all manuals and
a copy of this sheet with the air handler!
Technician's Name:_________________________
Signat
u
re:_________________________________
Date:_____________________________________
