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ADP Unit Heater Limited Warranty 

Term of Warranty: 

Advanced Distributor Products (ADP) warrants that products sold shall be of merchantable 

quality, free of defects in material and workmanship, under normal use and service, for a period of two (2) years 

from the date of installation, 

not

 to exceed three (3) years from the date of manufacture subject to the terms of 

ADP’s limited warranty.   

Unit Heater Extended Components:

      This  warranty  provides  extended  coverage  on  Aluminized  Heat 

Exchangers  for  ten  (10)  years  and  Stainless  Steel  Heat  Exchangers  for  fifteen  (15)  years.    The  extended 

warranty  coverage  begins  with  the  installation  date  and  represents  the  total  warranty  period  for  the  specific 

component.  ADP, at its option, will furnish a replacement heat exchanger or allow a credit (in the amount of the 

heat exchanger original selling price) toward the purchase of a new ADP unit heater.  No extended coverage 

granted for HED series heat exchangers. 

For information on this product’s warranty, including accessing 

complete

 warranty terms, registering for an 

extended warranty*, or obtaining instructions on filing a warranty claim, please go to  www.ADPwarranty.com. 

In such states or provinces where registration requirements are prohibited, failure to complete 

registration by the consumer does not diminish his or her warranty rights. 

 

EQUIPMENT INFORMATION 

Please complete information below and retain this warranty for records and future reference. 

 

Unit Model Number:__________________________________ 

Serial Number:______________________________________ 

Installing Contractor:__________________________________ 

Installation Date: ________________Phone:_______________ 

 

 

 

 

 

 

 

 

2175 West Park Place Boulevard 

Stone Mountain, Georgia  30087 

www.adpnow.com 

 

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Summary of Contents for HED Series

Page 1: ...mplate 17 Warranty 18 RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE WARNING FIRE OR EXPLOSION HAZARD Failure to follow safety warnings exact ly could result in serious injury death or property damage Be sure to read and understand the installation operation and service instructions in this manual Improper installation adjustment alter ation service or maintenance can cause serious injury death or...

Page 2: ... in 31 5 16 32 3 16 41 1 8 3 11 16 40 17 1 2 3 1 4 25 39 1 8 15 3 8 35 1 16 9 HED 250 A S mm 795 817 1045 97 1016 445 83 635 994 391 891 229 HED 300 A S A Heat Exchanger Aluminum Steel S Heat Exchanger Stainless Steel Shipping The heater is completely assembled and is shipped with installation and operating instructions warranty certificate and flue transition Check the unit for shipping damage Th...

Page 3: ...e area clearance from the heater to combustible materials must be such that the combustible material must not attain a temperature above 160 F 71 C during continuous operation of the unit WARNING These units are CSA international design certified These duct heaters are certified for clearances to combustible material as listed in table 1 and on unit rating plate Accessibility and service clearance...

Page 4: ...onnection and not less than 2 equivalent diameters in length See figure 1 SINGLE BLOWER APPLICATION Top View 155 TRANSITION HED UNIT BLOWER AIR FLOW DUCT LENGTH L The formula for computing duct length L is 4WH W WidthH Height Inlet W H Duct length L is computed as shown by the formula and rounded to the nearest whole number MODEL INLET DUCT in mm DUCT NO WIDTH HEIGHT LENGTH L HED 75 15 13 3 8 29 3...

Page 5: ... rotate the combustion air inducer on HED models 200 250 and 300 Rotate the combustion air inducer assembly as follows 1 Remove the heater from the carton Decide the best duct heater orientation The vent can be installed in one of three discharge positions up left or right 2 If the inducer is to be rotated follow the instructions in this section otherwise refer to instructions under Venting sectio...

Page 6: ...l HED duct heaters are listed as Category 1 appliances for vertical vent installations 1 All HED duct heaters are to be used with NFPA or ANSI approved chimneys or U L listed type B 1 gas vents where applicable as well as the modifications and limitations listed in figure 2 Seal single wall vent material according to General Recommendations and Requirements section 2 Keep the vent connector runs a...

Page 7: ...ct heater If the HED duct heater is to be horizontally vented a positive pressure may be created in the vent The duct heater when installed with horizontal venting will perform as a category III appliance 1 Special vent materials approved for use with Category III appliances may be used with these units Refer to table 7 for venting components 2 If possible do not terminate the horizontal vent thro...

Page 8: ...he vent termination if permitted by authorities Fig 5 13 For horizontal venting the vent pipe must be supported with hangers no more than 3 feet 1m apart to prevent movement after installation 14 All horizontal vent applications which use Category III vent pipe must terminate with an approved Category III tee Opening end must face downward 15 When termination is routed through an exterior combusti...

Page 9: ...ructions OR listed special vent for Category III appliances SLOPE 1 4 IN PER FOOT RUN MAXIMUM NOTE Minimum horizontal length equals 5 feet 1 53 m This does not include termination tee Refer to table 6 for maximum length and number of elbows 12 INCHES 30 5 cm MINIMUM DOUBLE MALE VENT TERMINATION ADAPTER TEE Cat III kits only FIGURE 6 TABLE 5 Category III Horizontal Venting Components Required for H...

Page 10: ...fused disconnect switch with the fuse sized according to blower motor size Connect wiring through knockout on the junction box located on the side of the duct heater Refer to heater wiring diagram for connection information Use 18 gauge wire or larger for thermostat connections NOTE Electrically ground unit in accordance with local codes or in the absence of local codes in accordance with the curr...

Page 11: ...hese devices should be properly labeled by the installer GAS SUPPLY TO UNIT HEATER MANUAL MAIN SHUT OFF DISCONNECT GAS VALVE WILL NOT HOLD NORMAL TEST VALVE WHEN TEST PRESSURES OF 1 2 psig PRESSURES OF 1 2 psig 3 45kPa 3 45kPa OR HIGHER OR HIGHER WILL BE USED CAP UNIT HEATER FIGURE 8 Unit Start Up FOR YOUR SAFETY READ BEFORE LIGHTING WARNING Electric shock hazard Can cause injury or death Do not u...

Page 12: ...ttempt to light the burners manually 5 Honeywell VR8205 series turn manual knob on gas valve clockwise to OFF Do not force For White Rodgers 36 series gas valve move lever to OFF 6 Wait five minutes to clear out any gas If you then smell gas STOP Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you do not smell gas go to next step 7 Honeywell VR8...

Page 13: ...ximately centered in the tubes with no apparent impingement taking place 7 The ignition control will energize the ACC terminals approximately 45 seconds after ignition is established 8 After the thermostat demand is satisfied the gas valve is closed Five seconds after the demand is satisfied the combustion air inducer is shut off 9 The ignition control will de energize the ACC terminals approximat...

Page 14: ...e switch is factory set and no field adjustment is necessary Service LUBRICATION Combustion air inducer motor bearings are pre lubricated and sealed No further lubrication is necessary BURNERS 1 Periodically examine burner flames for proper appearance during the heating season 2 Before each heating season examine the burners for any deposits or blockage that may have occurred 3 Clean burners as fo...

Page 15: ...nit unit operating 3 Check amperage draw FLUE AND CHIMNEY Check all vent and vent connector joints for tightness Ensure that connections are sealed and that there are no blockages FAILURE TO OPERATE If unit fails to operate check the following 1 Is thermostat calling for heat 2 Is main disconnect closed 3 Is there a breaker tripped or a fuse blown 4 Is gas turned on at meter 5 Is manual shutoff va...

Page 16: ...l No Serial No Service Technician Electrical Connections Tight Air Shutters Properly Adjusted If Installed Supply Voltage Flue Connections Tight Blower Motor Lubrication O K Gas Piping Connections Tight Leak Tested THERMOSTAT Furnace Btu Input Calibrated Heat Anticipator Properly Set Line Pressure Manifold Pressure w c Level 16 ...

Page 17: ...TEMPLATE Location of Combustion Air Inducer Mounting Holes for Rotated Inducer EXISTING HOLE EXISTING HOLE EXISTING HOLE 17 ...

Page 18: ... credit in the amount of the heat exchanger original selling price toward the purchase of a new ADP unit heater No extended coverage granted for HED series heat exchangers For information on this product s warranty including accessing complete warranty terms registering for an extended warranty or obtaining instructions on filing a warranty claim please go to www ADPwarranty com In such states or ...

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