Filter
Top Products
Page 1
FOR YOUR SAFETY
WARNING: The use and storage of gasoline or
other flammable vapors and liquids in the vicinity
of this appliance is hazardous.
If you smell gas:
1. Open windows.
2. Don't touch electrical switches.
3. Extinguish any open flame.
4. Immediately call your gas supplier.
WARNING: Improper installation, adjustment,
alteration, service, or maintenance can cause
property damage, injury or death. Read the
installation, operation, and maintenance
instructions thoroughly before installing or
servicing this equipment.
Operating/Maintenance/Service
Instructions
The information in this manual applies to Model Series DV, di-
rect-fired heating/makeup air systems. As with any gas burning
equipment, regular maintenance procedures are required to en-
sure continued safety, reliability and efficiency of the installa-
tion.
If service is required, this system should be serviced only by a
qualified service person. Service information in this booklet is
intended as a guideline for a qualified gas-fired equipment ser-
vice person.
Page
MAINTENANCE
SECTION ...................... 2-4
Configuration ................................. 2
Maintenance Schedule ................... 2
1A. Blower Bearings .............................. 3
1B. Blower Belts ................................... 3
2. Filters ................................................. 3
3. Manifold Gas Pressure ...................... 3
4. Air Pressure ....................................... 4
5. Circuit Indicator Board (check lights) 4
6. Main Burner and Pilot Assembly ...... 4
OPERATION/SERVICE
SECTION ................... 5-15
Controls - Location ....................... 5
7. Electronic Circuit Board with
Diagnostic Lights.............................. 5
TABLE OF CONTENTS
KEEP THIS BOOKLET
FOR MAINTENANCE AND
SERVICE REFERENCE.
References: Installation Manual, Form RZ 441
Replacement Parts Manual, Form RZ 741
Mfg No. 161442
Applies to: Model Series DV
INDOOR OR OUTDOOR, GAS,
DIRECT-FIRED, MAKEUP AIR/
HEATING SYSTEMS
(Specifications subject to change without notice.)
Operation/Maintenance/Service
Form RZ-NA 441-OMS
Page
8. Temperature Limit Safety Controls ... 5
•Manual Reset Limit Control ........... 5
•Emergency Cut Off Limit Control .. 6
9. Air Pressure Switches ........................ 6
•Low Air Flow Switch ...................... 6
•High Air Flow Switch ...................... 6
•Bypass Damper (Optional) Air
Flow Switches ................................ 6
10. Ignition System................................ 6
11. Gas Train Including Direct-Fired
Burner, Gas Control Systems,
Manifold Arrangements and Gas
Pressure Switches ............................. 7
•Direct-Fired Burner ........................ 7
•Makeup Air Gas Control Systems .. 7
•Electronic Modulation Gas Control
Options AG30, AG31, AG32,
AG33, AG35, AG36 ...................... 7
•Electronic Modulation Gas Control
Option AG37 ................................. 7
Page
•Manifold Arrangements ................. 8
•Gas Pressure Switches.................... 8
12. Outside Air Ambient Cutoff ............ 8
13. Door Switch ..................................... 9
14. Inlet Air Controls ............................ 9
•Air Flow Dampers ........................... 9
•Damper Motor ................................. 9
•Potentiometer .................................. 9
•Pressure Null Switch ....................... 9
•Photohelic Pressure Switch ........... 10
15. Dirty Filter Switch ......................... 10
16. Photoelectric Smoke Detector ....... 10
17. Firestat ........................................... 10
18. Freezestat ....................................... 10
19. Troubleshooting ............................. 11
Chart 1 - General Troubleshooting
Guide (Check the diagnostic lights on
the circuit board)
Index ................................................... 12
C E R T I F I E D