4000-S
ERIES
I
NSTALLATION
, O
PERATION
AND
S
ERVICE
M
ANUAL
112 of 154
SECTION 20: DIRECT FIRED BURNER
Yo
u
r
u
nit
w
ill be eq
u
ipped
w
ith a direct fired b
u
rner man
u
fact
u
red by either Midco International or Maxon
Corporation. Please cons
u
lt the specification sheet pro
v
ided
w
ith yo
u
r air handler to confirm the
man
u
fact
u
rer of the b
u
rner s
u
pplied
w
ith it.
Man
u
fact
u
red by Midco International
®
, Inc., the HMA-2A is
u
sed for nat
u
ral gas and propane (LP). The
b
u
rner combines the t
w
o main ingredients needed for proper comb
u
stion air (oxygen) and f
u
el (gas
w
hether
nat
u
ral or man
u
fact
u
red). In this b
u
rner ra
w
gas is deli
v
ered to the b
u
rner ports at lo
w
press
u
re. The air
passing across the b
u
rner is maintained bet
w
een 2,500 and 3,200 feet per min
u
te. The arrangement and
shape of the air holes in the baffles that s
u
rro
u
nd the b
u
rner pro
v
ide the proper amo
u
nt of air for proper
comb
u
stion for all of the firing rates.
WARNING
Failure to follow these instructions can result in death, electric shock, injury or property damage.
Burn Hazard
Allow heater to cool
before service.
Tubing may still be
hot after operation.
Explosion Hazard
Leak test all compo-
nents of gas piping
before operation.
Gas can leak if piping
is not installed
properly.
Do not high pressure
test gas piping with
equipment connected.
DANGER
Electrical Shock Hazard
Disconnect electric
before service.
More than one
disconnect switch may
be required to
disconnect electric from
heater.
Heater must be
connected to a properly
grounded electrical
source.
Carbon Monoxide Hazard
Heaters installed
unvented must be
interlocked with sufficient
building exhaust.
Heaters must be installed
according to the
installation manual.
Summary of Contents for 4044
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Page 73: ...SECTION15 VIBRATION ISOLATION 65 of 154 FIGURE 52 Curb Mounted Roof Curb Roof Curb...
Page 109: ...SECTION19 ELECTRICAL 101 of 154...
Page 110: ...4000 SERIES INSTALLATION OPERATION AND SERVICE MANUAL 102 of 154...
Page 111: ...SECTION19 ELECTRICAL 103 of 154...
Page 112: ...4000 SERIES INSTALLATION OPERATION AND SERVICE MANUAL 104 of 154...
Page 113: ...SECTION19 ELECTRICAL 105 of 154...
Page 114: ...4000 SERIES INSTALLATION OPERATION AND SERVICE MANUAL 106 of 154...
Page 115: ...SECTION19 ELECTRICAL 107 of 154...
Page 116: ...4000 SERIES INSTALLATION OPERATION AND SERVICE MANUAL 108 of 154...
Page 117: ...SECTION19 ELECTRICAL 109 of 154...
Page 118: ...4000 SERIES INSTALLATION OPERATION AND SERVICE MANUAL 110 of 154...
Page 119: ...SECTION19 ELECTRICAL 111 of 154...
Page 121: ...SECTION 20 DIRECT FIRED BURNER 113 of 154 FIGURE 71 Midco HMA 2A Burner...
Page 122: ...4000 SERIES INSTALLATION OPERATION AND SERVICE MANUAL 114 of 154...
Page 125: ...SECTION 20 DIRECT FIRED BURNER 117 of 154...
Page 126: ...4000 SERIES INSTALLATION OPERATION AND SERVICE MANUAL 118 of 154...
Page 127: ...SECTION 20 DIRECT FIRED BURNER 119 of 154 20 3 Honeywell UV Flame Detector...
Page 160: ...4000 SERIES INSTALLATION OPERATION AND SERVICE MANUAL 152 of 154...
Page 161: ...SECTION 27 THE RAPID 4000 SERIES WARRANTY 153 of 154...
Page 162: ...4000 SERIES INSTALLATION OPERATION AND SERVICE MANUAL 154 of 154...