Installation instructions

3.8Measuring gas pressure

Confirm proper gas pressure upon installation.

Connecting Manometer

BShut off gas supply at installer supplied shutoff valve.

BRemove front cover and locate inlet gas pressure measuring point (see Fig. 24).

B Loosen screw inside left test point fitting (do not remove) and connect manometer tube to test point. Remove screw completely if correct size adapter is available.

Static Pressure Test

BTurn gas supply back on.

BOperate all other gas appliances (except heater) on same gas piping system at maximum output.

BRecord static gas pressure reading in table 7.

Operating Pressure Test

BON/OFF switch in position OFF (0).

BPress and hold "Program" (P) button and turn ON/ OFF switch to ON position.

Fig. 23

B As soon as '188' is displayed, release "Program"

, button and the display should read P2.

BPress until P1 appears.

Note: While in this mode the appliance will run constantly at maximum power and allow maximum water flow.

BTurn on a high volume of hot water (at least 4 gpm) and heater will ignite. If heater display reverts to P2, open more hot water fixtures to allow sufficient flow.

Press until P1 reappears on display.

B Record lowest operating gas pressure reading in table 7.

Gas pressures lower than 5" W.C. for Natural Gas or 11" W.C. for LPG will result in insufficient degree rise to the hot water being used, possible error code faults and must be corrected. See Gas Connections, chapter 3.7.

Fig. 24 Gas pressure measuring (left tapping)

Static Gas Pressure Reading (see Chapter 3.8)

enter here: ___________________ Date: ___________

Operating Gas Pressure Reading (see Chapter 3.8)

enter here: ___________________ Date: ___________

Table 7

HIGH ALTITUDE OPERATION

Altitude

Natural

Liquid

 

 

 

Gas:

Propane:

 

 

 

 

 

 

 

 

 

 

 

For operation at

0 - 4,000 ft

no

no

 

elevations

(0 - 1,219 m)

modification

modification

 

above 2,000 ft

 

 

 

 

(610 m) the

 

 

 

 

equipment

 

 

 

 

ratings shall be

 

CO2 adjustment with flue

 

reduced at the

4,000 ft - 7,000 ft

 

rate of 4% for

(1,219 m - 2,134 m)

gas analyzer required See

 

each 1,000 ft

section 5.4 for instructions.

 

 

 

(305 m) above

 

 

 

 

sea level

Above 7,000 ft

 

Not approved

 

(above 2,134 m)

 

 

 

 

 

 

 

 

 

 

 

Table 8

6 720 608 263

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Bosch Appliances 2400E LP Measuring gas pressure, Connecting Manometer, Static Pressure Test, Operating Pressure Test

2400E NG, 2400E LP specifications

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