Triple Aquastat Relay L8124a Manual

I have a l8124b triple aquastat relay installed on my boiler.

Triple aquastat relay l8124a manual.

10 f fixed low limit. This article describes common operating problems with heating system aquastat controls and how these troubles are diagnosed and fixed. L8124a b c e g l m aquastatfi relays 3 60 2061š10 table 1. Control case must be connected to earth ground.

High limit protection low limit and circulation control operating range low limit f. Provide disconnect means and overload protection as required. We discuss aquastat problems such as improper adjustment improper wiring and relay buzzing or failures. Tr 1 power supply.

A multizone control can be provided by using a separate circulator and r845 relay for each zone. 110 f to 220 f adj. I tried looking for l8124b but it looks like this model number is obsolete. Guide to diagnostic troubleshooting for heating boiler aquastat controls.

They are rated for switching of millivoltage loads. See table 2 and fig. 43 c to 104 c adj. Bl is 1 4 in.

Has model l8124c replaced model l8124b. Provide multizone control by using a separate. L8124e and l have large transformers and extra terminals for supplying power to low voltage valves. Provide disconnect means and overload protection as required.

L8124 can provide multizone control by using a separate circulator and r845 relay for each zone. Operating range low limit c. L8124a c e l and m aquastat relays t87f t87f t87f l8124a r845 relay r845 relay l1 c1 c2 b2 hot pump pump pump r8184 c554 orange burner black ignition power supply. Control case must be connected to earth ground.

M8822 b1 is 1 4 in. Honeywell l8124a1015 high limit protection low limit circulator vertical mount triple aquastat relay high 10 f low limit 10 25 adj differential features immersion type controllers that combine high limit protection with low limit and circulator control in forced hydronic heating systems. Description high limit protection low limit and circulation control triple aquastat relay with high limit. Product data and specifications product data for l8124a l8124b l8124c l8124e l8124g l8124l l8124m aquastat relays english maintenance product reference materials 2015 residential combustion application selection and cross reference guide.

When the thermostat is calling for heat the boiler does not come on unless i tap the side of the controller and then the burners come on. Use grounding screw provided. Use grounding screw provided. These aquastat relays have a diaphragm powerhead and microswitch assembly that respond to temperature changes in the boiler water.