Rapid UHDS 100 Installation, operation & service manual - page 48

 UHD L

OW 

P

ROFILE 

D

UCT 

F

URNACE 

I

NSTALLATION 

O

PERATION AND 

S

ERVICE 

M

ANUAL

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15.3 Ignition Electrode and Flame Probe

15.4 Heat Exchanger

The heat exchanger consists of a six-pass design with 1.5" outer diameter [aluminized steel] [409 stainless 

steel] tube. The tube plates are made of [aluminized steel] [409 stainless steel]. The tube supports are 

made of [aluminized steel] [409 stainless steel].

Description

Part Number

Qty

Spark Electrode

90427411

1

Automatic Ignition Flame Probe

90439300

1

Transformer

90436900K

1

Ignition Module

90434008

1

Inshot Burners UHD[X][S] 75

92000002

5

Inshot Burners UHD[X][S] 100

92000002

6

Inshot Burners UHD[X][S] 125

92000002

7

Limit Switch

90412104

1

Manual Reset Limit Switch (75 only)

90412106

1

To replace the electrode or flame probe, remove the electrical lead and screw. 

Pull out from mounting. Refit in reverse ensuring that the gap to burner is as shown in the front view of 

the burner compartment.