DF-S
ERIES
I
NSTALLATION
, O
PERATION
AND
S
ERVICE
M
ANUAL
66
SECTION 14: GENERAL SPECIFICATIONS
14.1 Material Specifications
14.1.1 Reflectors
.024 Aluminum (Standard or High Efficiency
Reflectors)
(Optional .024 Stainless Steel Type 304 (Standard
Reflectors Only))
14.2 Heater Specifications
14.2.1 Ignition
Fully automatic, three-try, direct spark, electronic
ignition control, 100% safety shut-off.
14.3 Suspension Specifications
Hang heater with materials with a minimum working
load of 75 lbs (33 kg).
14.4 Controls Specifications
Time switches, thermostats, etc. can be wired into
the electrical supply. External controls supplied as an
optional extra.
General Specifications for DF-Series heaters are as follows:
for clearances to combustibles.
GAS PRESSURE AT MANIFOLD:
Natural Gas:
3.5" wc
LP Gas:
10.5" wc
PIPE CONNECTION:
1/2" NPT
DIMENSIONS:
Vent Connection Size:
4" (10 cm)
Outside Air Connection Size: 4" (10 cm)
Refer to figure above for dimensional information.
ELECTRICAL RATING (ALL MODELS):
120 V - 60 Hz, 1 A (run)
GAS INLET PRESSURE:
Natural Gas:
for BH-40, 60, 80, 100,
115, 125, 140, 150
4.6" wc Minimum
for BH-175, 200
5.0" wc Minimum
14.0" wc Maximum
LP Gas:
11.0" wc
Minimum
14.0" wc Maximum
PRODUCT "TYPE" ACCORDING TO ASHRAE HANDBOOK-
HVAC SYSTEMS AND EQUIPMENT (LATEST EDITION)
Type: "C" - Indirect Tube-Type Heater (Forced Draft)
Turbulator
(select
models)
Si
de
V
i
e
w
Re
f
lector
1
2.5
"
(
32
cm)
E
nd
V
i
e
w
11"
(
28
cm)
M
i
n
i
mum
L
engt
h
A
Burner
Tube
1
2.5
"
(
32
cm)
Heat Input Rate
Length “A”
Recommended
Minimum Mounting Height*
Model
High Fire
Low Fire
Minimum
Space
Spot
DF-80
80
55
20
'
(6 m)
12-15
'
(3.6 - 4.5 m)
11
'
(3.3 m)
DF-100
100
70
30
'
(9 m)
12-15
'
(3.6 - 4.5 m)
12
'
(3.7 m)
DF-125
125
85
30
'
(9 m)
15-20
'
(4.5 - 6 m)
15
'
(4.6 m)
DF-150
150
105
40
'
(12 m)
20-25
'
(6 - 7.6 m)
20
'
(6.1 m)
DF-175
175
120
40' (12 m)
25
'
(7.6 m)
23
'
(7 m)
DF-200
200
130
50' (15 m)
25
'
(7.6 m)
25
'
(7.6 m)
Gas Pressure at Manifold Per Rate (NG Only)
DF-80
DF-100
DF-125
DF-150
DF-175
DF-200
Burner Pressure High Fire (in wc)
3.3
3.3
3.4
3.5
3.7
3.9
Burner Pressure Low Fire (in wc)
1.7
1.6
1.7
1.8
1.8
1.8
Summary of Contents for DF
Page 2: ......
Page 4: ......
Page 21: ...SECTION 6 HEATER INSTALLATION 17 FIGURE 16 Linear Heater Assembly Overview ...
Page 37: ...SECTION 7 OPTIONAL HEATER ACCESSORIES 33 FIGURE 25 U Tube Heater Layout Overview ...
Page 58: ...DF SERIES INSTALLATION OPERATION AND SERVICE MANUAL 54 10 3 Internal Wiring ...
Page 59: ...SECTION 10 WIRING 55 10 4 Ladder Diagram 10 5 Electrical Connection to the Burner ...
Page 64: ...DF SERIES INSTALLATION OPERATION AND SERVICE MANUAL 60 12 1 Troubleshooting Flow Chart ...
Page 65: ...SECTION 12 TROUBLESHOOTING 61 ...
Page 66: ...DF SERIES INSTALLATION OPERATION AND SERVICE MANUAL 62 12 2 Manifold Gas Pressure Setting ...
Page 68: ...DF SERIES INSTALLATION OPERATION AND SERVICE MANUAL 64 ...
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Page 73: ...2020 ...
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