Gas Train and

Wiring Supplement

For702GAS, 702G/O,

702GAS (Mass Code), 702G/O (Mass Code),

Ventless Train

Use with Instruction Manuals MN702G and MN702G/O

126 Bailey Rd North Haven, CT 06473Ph 203-680-9401 Fx 203-680-9403

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Car l in Combustion Technology, Inc.

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702GAS / 702G/O Gas TrainNote: Parts may not be exactly as shown in diagram.

702GAS / 702G/O Gas Train Parts List

ITEM PART NO. DESCRIPTION

702G

as

702G

/O

173007S Orifice nipple assembly Natural Gas • •

73007AS Orifice nipple assembly Propane Gas • •

2 98523S Pilot Gas valve 120 volt • •

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99455S Manual Gas Shutoff 3/4" NPT • •

99225S Manual Gas Shutoff 1" NPT • •

99245S Manual Gas Shutoff 1-1/4" NPT • •

99246S Manual Gas Shutoff 1-1/2" NPT • •

99926S Manual Gas Shutoff 2" NPT • •

4 99235S High gas pressure switch • •

5 99234S Low Gas pressure switch • •

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99227S Primary Gas Valve, Honeywell 48A 2169 1" NPT w/ bleed restrictor • •

99434S Primary Gas Valve, Honeywell 48A 2177 1-1/4" NPT w/ bleed restrictor • •

99434AS Primary Gas Valve, Honeywell V48A 2185 1-1/2" NPT w/ bleed restrictor • •

99434BS Primary Gas Valve, Honeywell 48A 2243 2" NPT w/ bleed restrictor

ITEM PART NO. DESCRIPTION

702G

as

702G

/O7

99229S Secondary Gas Valve Honeywell V4295A 1031 – 1" NPT • •

99435S Secondary Gas Valve Honeywell V4295A 1049 – 1-1/4" NPT • •

99435AS Secondary Gas Valve Honeywell V4295A 1056 – 1-1/2" NPT • •

99435BS Secondary Gas Valve Honeywell V4295A 1064 – 2" NPT • •

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99233S Gas Pressure Regulator 1" NPT Maxitrol RV-61 • •

99432S Gas Pressure Regulator 1-1/4" NPT Maxitrol RV-81 • •

99432AS Gas Pressure Regulator 1-1/2" NPT Maxitrol RV-81 • •

99432BS Gas Pressure Regulator 2" NPT Maxitrol RV-91 • •

9 99533S Butterfly valve and crank arm – Eclipse 4BV-A, 1" NPT • •

MN702GAS 100316 3

Wiring diagram – 702GAS burner with Honeywell RM7895C or RM7897C primary control

Standard Commercial Gas Train 120V

Mass Code Commercial Gas Train 120VThe 702G/O burner, configured for Massa-chusetts Code compliance, differs from the standard 702G/O in:1 Low and high gas pressure switches

are added to the gas train.2 Jumper JR2 on the primary control

is cut, causing the control to be non-recycling

4 MN702GAS 100316

Wiring diagram – 702G/O burner with Honeywell RM7895C or RM7897C primary control

Standard Commercial Gas Train 120V

Mass Code Commercial Gas Train 120VThe 702G/O burner, configured for Massa-chusetts Code compliance, differs from the standard 702G/O in:1 Low and high gas pressure switches

are added to the gas train.2 Jumper JR2 on the primary control

is cut, causing the control to be non-recycling

702GAS / 702G/O Ventless Gas TrainNote: Parts may not be exactly as shown in diagram.

702GAS / 702G/O Ventless Gas Train Parts List

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ITEM PART NO. DESCRIPTION QTY

1 99223 Ball valve 2

2 51161C Double valve body (Siemens) 1

3 51162A 1” NPT flange (Siemens) 2

4 99234 Lo pressure switch 1

5 99235 Hi pressure switch 1

ITEM PART NO. DESCRIPTION QTY

6 51160 Ssov actuator (Siemens) 1

7 51143 Pressure regulating SSOV actuator (Siemens) 1

8 98523S Gas valve 3/4”, HWVR4305M4540/b 1

9* 51206 Vent restricting orifice (Siemens model AGA25.2) 1

*Must be used whenever outside venting is not installed.

Wiring diagram — 702GAS and 702G/O Burner with Ventless Commercial Gas TrainVentless Commercial Gas Train 120V

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