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L8148A,E,J AQUASTAT® RELAYS

60-2278—9

6

Fig. 4. Position of bulb in immersion well, and use of well adapter when required.

CAUTION

Equipment Damage Hazard.

Exceeding load limits can damage the equipment.

1. When L8148E or J is used to power zone valves, 

low voltage 1.4A; 1.2A load is the maximum 

permissible when ambient temperature exceeds 

77°F (25°C). Use additional transformer(s) if load 

exceeds ratings.

2. When L8148E (with 50 VA transformer) is used to 

power SV9500/SV9600, a separate transformer 

must be used to power zone valves.

CONTROLLER
CASE

IMMERSION
WELL CLAMP

ADAPTER

IMMERSION
WELL SPUD

BOILER

OLD IMMERSION
WELL ASSEMBLY

BACK OF

CONTROLLER

CASE

IMMERSION
WELL CLAMP
SCREW

ADAPTER

SENSING 
BULB

HEAT-CONDUCTIVE COMPOUND

SETSCREW

CAPILLARY
TUBE

(C)

IMMERSION
WELL CLAMP

IMMERSION
WELL CLAMP SCREW

SHORT TUBE 
FITS IN CENTRAL
RECESS OF ADAPTER

BEND THE CAPILLARY TUBE TO HOLD THE SENSING BULB IN GOOD 
THERMAL CONTACT WITH THE IMMERSION WELL AT POINTS  (A) AND (B).

ASSURE THAT CAPILLARY TUBE FITS FREELY IN THE ADAPTER SO THE 
TENSION OF THE CAPILLARY TUBE AT POINT (C) HOLDS THE SENSING 
BULB IN GOOD THERMAL CONTACT WITH THE IMMERSION WELL AT POINT (D).

M8830

1

1

2

2

(D)

(B)

(A)

Содержание Aquastat L8148A

Страница 1: ...or adding zone valve system wiring L8148E models are available with plug for connecting Aquastat Relay directly to D892 M892 Vent Dampers All devices include transformer to provide power for the low voltage control circuit Different models provide switching of line low or millivoltage burner circuit Case available for horizontal or vertical mounting Combinations of two insulation and two insertion...

Страница 2: ...92 M892 Vent Dampers 180 F to 240 F 82 C to 116 C scale range without well and spud L8148J Aquastat Relay with zone control terminals without well and spud See Fig 3 Scale Range 140 F to 240 F 60 C to 116 C Additional Features Heat conductive compound for better bulb response in oversized well For more information on heat conductive compound see Material Safety Data Sheet MSDS form 69 0955 Case ca...

Страница 3: ... Heat Anticipator Setting 0 2A Standard Scale Range 180 F to 240 F 82 C to 116 C Differential Nonadjustable Finish Gray enamel Optional Specifications Scale Range 140 F to 240 F 60 C to 116 C High Limit Dial Stop Case Dimensions See Fig 1 Accessories 107408 Heat Conductive Compound 4 oz can For more information see form 69 0955 Heat Conductive Compound 124904 Well Adapter For ordering information ...

Страница 4: ...andard Models Boilers have tappings to allow immersion well which must be ordered separately to be mounted horizontally so boiler water of average temperature can circulate freely around the well 1 Turn off all power and drain the boiler 2 If no tapping is provided prepare one properly sized and threaded and locate near the top of the boiler 3 Coat the well threads sparingly with pipe dope install...

Страница 5: ...ls extra tubing inside the case can be pulled out if needed 4 Make sure the wide end of the adapter fits into the hole in the case Position the immersion well clamp snugly over the flange on the adapter and tighten the clamp screw 5 Insert the sensing bulb into the well as shown in Fig 4 Distribute heat conductive compound prior to insertion 6 Securely tighten setscrew if present on old well again...

Страница 6: ...ansformer must be used to power zone valves CONTROLLER CASE IMMERSION WELL CLAMP ADAPTER IMMERSION WELL SPUD BOILER OLD IMMERSION WELL ASSEMBLY BACK OF CONTROLLER CASE IMMERSION WELL CLAMP SCREW ADAPTER SENSING BULB HEAT CONDUCTIVE COMPOUND SETSCREW CAPILLARY TUBE C IMMERSION WELL CLAMP IMMERSION WELL CLAMP SCREW SHORT TUBE FITS IN CENTRAL RECESS OF ADAPTER BEND THE CAPILLARY TUBE TO HOLD THE SENS...

Страница 7: ...T MEANS AND OVERLOADPROTECTION AS REQUIRED REMOVE JUMPER WHEN ADDING L6006 LOW LIMIT CONTROLLER CONTROL CASE MUST BE CONNECTED TO EARTH GROUND USE GROUNDING SCREW PROVIDED B1 IS 1 4 IN TAB TERMINAL 1 2 3 4 4 1 2 3 M2842A L8148A 4 T T 1 2 3 4 5 6 T T 1 2 3 4 5 6 T T 1 2 3 4 5 6 G L2 L1 T T C1 C2 B2 B1 F F T T L1 HOT L2 PUMP PUMP PUMP T87F T87F T87F R845 RELAY R845 R845 C554 R8184G BURNER AND IGNITI...

Страница 8: ... L2 L1 L1 G G Z Z W T T TV TV B1 B1 B2 B2 C1 C1 C2 C2 R R R B B B W W M1621B L1 HOT L1 HOT L2 L2 1 1 2 4 3 TO LOW VOLTAGE BURNER CIRCUIT TR TH TH TR T87F ZONE 3 T87F ZONE 2 T87F ZONE 1 L8148E CIRCULATOR HIGH LIMIT L2 L1 G Z T TV B1 B2 C1 C2 R B W END SWITCH V8043F 3 TR TH TH TR END SWITCH V8043F 3 TR TH TH TR END SWITCH V8043F POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIR...

Страница 9: ...PROTECTION AS REQUIRED CONTROL CASE MUST BE CONNECTED TO EARTH GROUND USE GROUNDING SCREW PROVIDED B1 IS 1 4 IN TAB TERMINAL 1 2 3 3 L8148E 2 1 M1620A LOW VOLTAGE GAS VALVE eg VR8300 TR TH THTR L1 HOT L2 1 2 3 1 2 3 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED CONTROL CASE MUST BE CONNECTED TO EARTH GROUND USE GROUNDING SCREW PROVIDED B1 IS 1 4 IN TAB TERMINALS M8888 T...

Страница 10: ...MV MV PV PV GND BURNER 24V GND 24V TH W SPARK VENT DAMPER PLUG THERMOSTAT L8148E STANDARD MODELS G L1 1K2 HIGH LIMIT L2 Z W 1K T TV B1 C1 B2 C2 VR8304 WIRING HARNESS D892 M892 B R 1K1 M2298D PV PV MV MV 24V GND 24V S8600 L1 HOT L2 1 1 2 3 4 5 L8148E 4 2 3 FUSE 5 1 2 3 5 6 PRONG FEMALE MOLEX RECEPTACLE IN L8148E AND 5 PRONG MALE MOLEX PLUG ON CABLE 1K1 B1 B2 L1 C1 C2 L2 CIRCULATOR POLARIZED 4 PRONG...

Страница 11: ...LVE PP PP TH2 TH1 W R R R B B B 24V THERMOSTAT L8148J CIRCULATOR G G L1 L1 L2 B3 B2 B1 HIGH LIMIT TP TV T W Z C1 C2 TR TH THTR LOW VOLTAGE GAS VALVE eg VR8300 1K3 TP Z W T TV 1K2 AUTO MANUAL SWITCH 1K1 C1 C2 B3 B2 B1 L2 L8148J M1793B TV T W W Z B1 B2 C1 C2 L1 L2 G L8148 CIRCULATOR ZONE 1 CIRCULATOR ZONE 2 CIRCULATOR ZONE 3 L1 HOT L2 1 2 3 4 5 6 1 2 3 4 5 4 6 POWER SUPPLY PROVIDE DISCONNECT MEANS A...

Страница 12: ...at the relay contacts make to complete the line voltage circulator circuit and also the burner circuit when the boiler water temperature is below the high limit The high limit switch shuts off the burner if boiler water temperature exceeds the high limit setting The AUTO MANUAL switch only L8148J millivolt models operates the burner during electrical power failure With the switch at MANUAL the bur...

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