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Honeywell ST7800 A 1013 prepurge - Controls
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Honeywell ST7800 A 1013 prepurge

Honeywell ST7800B prepurge tuner controls burner safety with adjustable prepurge timing of 2, 7, 10, or 20 seconds. This EC7800 series module fits combustion management systems requiring flame-safeguard protection…

SKU 3G-CBM-04227

Brand
Honeywell
Item
ST7800 A 1013 prepurge
Category
Controls
UNSPSC
39121026 — Control power transformer
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Honeywell
type
Prepurge tuner
model
ST7800B
series
EC7800
prepurge timing options
2 sec, 7 sec, 10 sec, 20 sec

Technical Documents

(1)
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Honeywell Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

Honeywell ST7800B prepurge tuner controls burner safety with adjustable prepurge timing of 2, 7, 10, or 20 seconds. This EC7800 series module fits combustion management systems requiring flame-safeguard protection before ignition.

Frequently Asked Questions

What is the Honeywell ST7800B prepurge tuner used for?

The Honeywell ST7800B prepurge tuner provides adjustable prepurge timing for EC7800 series relay modules in combustion management systems. It ensures flame-safeguard protection by purging the burner before ignition, helping to prevent unsafe startup conditions in industrial burners and boilers.

What are the specifications of the Honeywell ST7800B prepurge tuner?

The Honeywell ST7800B is a plug-in purge tuner from the EC7800 series. It offers prepurge timing options including 2 sec, 7 sec, 10 sec, 20 sec, 30 sec, 40 sec, 60 sec, 90 sec, 2.5 min, 5 min, 10 min, 15 min, 22 min, and 30 min. The specific model ST7800B1013 provides 7-second prepurge timing.

Where to buy the Honeywell ST7800B in Singapore?

3G Electric supplies the Honeywell ST7800B prepurge tuner to customers in Singapore. We source and deliver this EC7800 series module, handling logistics and customs clearance for your order. Contact us for availability and pricing on the ST7800B1013 or other timing variants.

How to install the Honeywell ST7800B prepurge tuner?

To install the Honeywell ST7800B, first disconnect power to prevent electrical shock. Remove the Keyboard Display Module or cover from the EC7800 relay module. Pull out any existing purge timer, then insert the new ST7800B with the correct orientation into the relay module compartment. Reinstall the cover and restore power before testing the burner cycle.

Used in

Common applications for Honeywell
Commercial kitchen and inflight-catering steam boilers — RM7890 / RM7895 flame relays with UV detection
Food-processing ramp-and-dwell ovens — DBC2000E / DBC2100E controllers
Hotel and hospital boiler plants — VR8205 combination gas controls
Petrochemical tank-farm heating — V4xxx gas-valve bodies with ML7420 actuators
Retrofit swap-outs from legacy Fireye / Satronic — Honeywell replacement kits
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Honeywell Products

3G Electric supplies Honeywell controls. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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