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SERVICE AND MAINTENANCE SUGGESTIONS
1. Lit match goes out as it enters lighter port.
a. Certain wind conditions will blow out match. Ignite match,
and as it flares, thrust match through opening.
b. Open nearby door or window and relight pilot.
2. Pilot flames but goes out when knob is released.
a. See Lighting Instructions. Relight Pilot.
b. Relight the pilot and hold knob down longer and harder. Close
lighter hole cover just after igniting. Check for a good pilot flame.
c. Defective thermopile or defective magnet in safety section of
valve. Replace.
3. Yellow pilot flame
a. Obstruction at pilot orifice.
b. Clean pilot orifice.
4. Pilot and main burner go out during normal operation.
a. Check millivolts.
b. Check for proper size of pilot flame.
c. Check for defective or weak thermopile.
d. Check input, reduce as needed.
PLEASE NOTE: When ordering parts, it is very important that part number and description of part coincide.
Index
Part
No.
Number
1
DV-769
2
DV-131
3
DV-548
4
DV-524
5
DV-757
6
DV-899
7
DV-900
8
DV-762
& DV-763
9
DV-895
10
DV-901
11
DV-902
12
RH-705
13
712036
14
DV-903
14
DV-904
15
712098
16
DV-781
17
DV-064
18
DV-988
18
DV-990
19
672063
20
DV-1004
21
RH-238
22
DV-778
23
712051
USE ONLY MANUFACTURER'S REPLACEMENT PARTS. USE OF ANY OTHER PARTS COULD CAUSE INJURY OR DEATH.
R-2070
CALL SERVICEMAN
SYMPTOMS -POSSIBLE CAUSES AND CORRECTIONS
Description
Vent Cap
Outside Mounting Plate
Air Inlet Tube
Flue Outlet Tube
Vent Kit
Wall Mounting Bracket
Inlet Air Drop Chute
Gasket - Air Drop Chute
(2 Each Required)
Casing Top
Heat Shield
Inner Casing
Casing Side (2 Required)
Gasket - Flue Outlet Support
Combustion Chamber (DV-25)
Combustion Chamber (DV-35)
Gasket - Lighting Hole
Lighting Hole Cover Assembly
with Clear Mica
Cover Plate
Burner (DV-25)
Burner (DV-35)
Thermopile
Pilot Tubing w/Ferrells
Burner Door
Gasket - Burner Door
Gasket - Pilot Burner
e. Cover on pilot lighter hole must be air tight.
f. Check for tight fit of air and flue tubes at both ends of vent
assembly. No obstruction around vent that would prevent the
wind from hitting all of the vent equally.
5. Thermostat does not turn the main burner on.
a. Check wiring.
b. Check all millivolt readings.
c. Check for spider in main burner orifice.
6. Yellow main burner flame soot on the vent cap.
a. See Page 6, "Primary Air Adjustment".
b. Remove main burner to check for obstructions in throat and ports.
c. Install new main burner orifice and pilot orifice. Refer to Parts
List, page 9.
7. On Propane gas, if a whistling noise (resonation) occurs.
a. See Page 6, "Primary Air Adjustment".
b. Reduce manifold pressure.
c. Size main burner orifice with a drill bit. For DV-25 use #54 drill
bit. For DV-35 use #50 drill bit.
Index
Part
No.
Number
24
DV-994
25
R-2224
25
R-2223
26
DV-772-G
27
DV-913
28
742155
28
742238
28
P-86-38N
28
742233
29
P-190
30
R-191
31
R-5600
31
R-5601
32
DV-1003
33
DV-764
& DV-765
34
DV-908
35
R-2313
Not Shown
742158
Not Shown
742266
Not Shown
662021
Not Shown
DV-885
Not Shown
922113
Not Shown
922217
Not Shown
652121
Not Shown
652211
Not Shown
DV-1001
Description
Pilot Shield
Pilot Burner with Orifice (Nat)
Pilot Burner with Orifice (LP)
Electrode and Wire
Casing Front
Burner Orifice, (DV-25 Nat)
Burner Orifice, (DV-25 LP)
Burner Orifice, (DV-35 Nat)
Burner Orifice, (DV-35 LP)
Manifold
Manifold Union Assembly
Gas Valve (Nat) 7000 MVRLC
Gas Valve (LP) 7000 MVRLC
Valve Bracket
Gasket - Chamber Support
(2 Each Required)
Valve Shield
Piezo Ignitor
Pilot Orifice (Nat)
Pilot Orifice (LP)
Wall Thermostat - Millivolt
Hardware Package
Operator Section - Nat
Operator Section - LP
Regulator - Nat
Regulator - LP
Thermostat Bracket
Page 9
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