Burnham Apex Series Brochure

©2013 Burnham Commercial  

•

  P.O. Box 3939, Lancaster, PA 17604

Phone: 888.791.3790  

•

  Fax: 717.293.5803  

•

  www.burnhamcommercial.com

Form No. CCIL02081-4/13-

3

Mc

    

Printed in the U.S.A.

APX500

44-7/8"

22-1/8"

29"

39-11/16"

29-3/8"

3/4"

1-1/2"

1-1/2"

APX625

50-1/4"

—

24"

38-7/8"

31-5/8"

1"

2"

2"

APX725

50-1/4"

­—

24"

38-7/8"

31-5/8"

1"

2"

2"

APX800

54-9/10"

28-3/8"

34-1/4"

48-1/16"

33-3/16"

1"

2"

2"

APX500

12-1/4"

5"

7-7/16"

35"

17-5/16"

14-29/32"

16-11/16"

APX625

12-1/4"

5"

7-1/2"

35"

17-1/4"

7-1/4"

16-11/16"

APX725

12-1/4"

5"

7-1/2"

35"

17-1/4"

7-1/4"

16-11/16"

APX800

12-1/4"

5"

7-1/2"

35"

17-1/4"

7-1/4"

16-11/16"

APX500

100

500

475

413

95%

3/4" NPT

4.2

375

50.8

4"

1-1/2" NPT

APX625

125

625

593

516

95%

1" NPT

5.5

430

76.2

6"

2" NPT

APX725

145

725

688

598

95%

1" NPT

5.5

430

76.2

6"

2" NPT

APX800

160

800

760

661

95%

1" NPT

5.0

430

65.3

6"

2" NPT

Low voltage 
knockouts 
(24V)

Gas valve 

inlet

Supply 

tapping

Condensate 

trap drain

Line voltage knockouts (115V)

Access panel

Access panel

Apex 

SPECIFICATIONS & DIMENSIONS

Condensate Neutralizer

Header Sensor–1/2NPT required for 

     multiple burner systems

Header sensor, alternate immersion 

     (103104-01)

RJ45 Cable Splitter (103192-01)

80 psi relief valve (all models)

100 psi relief valve (all models)

Tekmar 265-3 boiler modulating control

CSD-1 Kit–Includes high and low gas pressure switches, 

      manual reset high limit, manual reset low water cutoff 

and gas valve leak test equipment.

Burnham Commercial Universal Gateway– 

     LonWorks or BacNet/Metasys/Modbus Compatible

ASME stainless steel heat exchanger

Stainless steel mesh burner

Full modulation, 5:1 turndown

Variable speed combustion blower

Negative reduction gas valve

Supply & Return temperature sensors

Flue gas temperature sensor

Sealed control compartment

Negative pressure lower cabinet

Outdoor air temperature sensor

Front-mounted terminal switch

Low voltage terminal strip

Line voltage junction box

Polypropylene condensate trap

Pressure relief valve, 50 psi for 500

Pressure relief valve, 60 psi for 625, 725, 800

Rear flue outlet

Stacking boiler brackets

Built-in lifting handles

30" CPVC

90° Elbow

(2) Vent-terminals with

     rodent screens

Touch screen display

Built-in diagnostics

Slide out drawer

Multiple boiler lead-lag control

Domestic water priority

     Warm weather shut down

     4-20 mA inputs for external modulation