Honeywell R8182D, Product Data

R8182D,E,F,H,J COMBINATION PROTECTORELAY™ AND HYDRONIC HEATING CONTROLS

5

68-0105—2

Fig. 7. Internal view of R8182H.

Fig. 8. Internal view of R8182J.

INSTALLATION

WARNING

Explosion Hazard.

Can cause severe injury, death or property 

damage.

This product is intended for use only in systems with a 

pressure relief valve.

When Installing this Product…

1.

Read these instructions carefully. Failure to follow them 

could damage the product or cause a hazardous 

condition.

2.

Check the ratings given in these instructions and on the 

product to be sure the product is suitable for your 

application.

3.

The installer must be a trained, experienced service 

technician.

4.

After completing installation, use these instructions to 

check product operation.

WARNING

Explosion or Electrical Shock Hazard.

Can cause severe injury, death or property 

damage.

1. Disconnect the power supply before beginning 

installation to prevent electrical shock or equipment 

damage.

2. Be sure that combustion chamber is clear of oil or 

oil vapor before starting burner.

3. Be sure that the ambient temperature at the 

element will not exceed 250°F (121°C).

IMPORTANT

Be sure that the sensing bulb fits snugly inside the 

immersion well and that the sensing bulb rests 

against the bottom of the immersion well. Refer to 

Fig. 9.

Mounting the R8182

1.

Disconnect the power supply.

2.

Drain all water from the boiler.

3.

Generally, boilers are equipped with a tapping that 

allows horizontal mounting of the immersion well where 

average temperature boiler water circulates freely. If no 

tapping is provided, prepare one.

4.

Install the immersion well or compression fitting 

(ordered separately) by threading the immersion well 

into the tapped hole.

5.

For R8182D,E,F models:

a. Loosen the immersion well clamp screw on the side 

of the R8182 case.

b. Insert the bulb into the immersion well until it 

bottoms.

c. If necessary, bend the capillary tube to hold the bulb 

against the bottom of the immersion well.

M4524

SAFETY SWITCH
RESET BUTTON

DIFFERENTIAL
SETTING

CIRCULATOR
RELAY (1K)

LOW LIMIT 
SETTING

HIGH LIMIT 
SETTING

VOLTAGE BARRIER

BURNER MOTOR
AND IGNITION
RELAY (2K)

TRANSFORMER 
FOR THERMOSTAT
CIRCUIT

TRANSFORMER FOR 
CAD CELL CIRCUIT

CAD CELL
LEADS (YELLOW)

M4531

SAFETY SWITCH
RESET BUTTON

AQUASTAT SWITCH

1K RELAY

HIGH LIMIT 
SETTING

VOLTAGE BARRIER

TRANSFORMER 
FOR THERMOSTAT
CIRCUIT

TRANSFORMER 
FOR CAD CELL 
CIRCUIT

CAD CELL LEADS (YELLOW)

2K RELAY