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BT Series Electric Boilers – Installation, Operating and Maintenance Instructions

1.2

WATER TEMPERATURE RISE vs FLOW RATE

NOTE: The boiler should be properly sized for its heating application and maintain an adequate water

flow rate during operation. Significantly oversizing the boiler or decreasing boiler water flow
rate will cause excessive stage cycling and result in premature failure of the contactors.

Water flow rate vs temperature rise formulas in US gallons per minute (GPM) and liters per minute (LPM):

6.94 x kW

14.6 x kW

GPM =

Temp. Rise (

LPM =

Temp. Rise (

Table 2: Water Temperature Rise vs Flow Rate in GPM (LPM)

Model KW

F (5.6

C) 20

F (11

C) 30

F (17

C) 40

F (22

6BT

4.2 (16)

2.1 (8)

1.4 (5)

1.0 (4)

9BT

6.2 (23)

3.1 (12)

2.1 (8)

1.6 (6)

12BT

8.3 (31)

4.2 (16)

2.8 (10)

2.1 (8)

15BT

10.4 (39)

5.2 (20)

3.5 (13)

2.6 (10)

18BT

12.5 (47)

6.2 (24)

4.2 (15)

3.1 (12)

20BT

13.9 (52)

6.9 (27)

4.6 (17)

3.5 (13)

24BT

16.6 (63)

8.3 (32)

5.5 (21)

4.2 (16)

27BT

18.7 (70)

9.4 (36)

6.2 (23)

4.7 (18)

30BT

20.8 (78)

10.4 (40)

6.9 (26)

5.2 (20)

34BT

23.6 (89)

11.8 (45)

7.9 (29)

5.9 (23)

38BT

26.4 (99)

13.2 (50)

8.8 (33)

6.6 (25)

42BT

29.1 (109)

14.6 (56)

9.7 (36)

7.3 (28)

45BT

31.2 (117)

15.6 (60)

10.4 (39)

7.8 (30)

48BT

33.3 (125)

16.6 (64)

11.1 (41)

8.3 (32)

54BT

37.5 (141)

18.7 (72)

12.5 (46)

9.4 (36)

1.3 GENERAL

DIMENSIONS

Figure 1 – General Dimensions

Содержание 12BT

Страница 1: ...ed by an Authority having jurisdiction must be provided with a low water cut off device at the time of boiler installation Overcurrent protection between the power supply and the boiler must be provided in accordance with the related national and or local codes Always ensure power is turned off before servicing Electrical wiring or internal controls must be serviced by a qualified electrician Any ...

Страница 2: ...48 57 7 50 0 33 3 28 8 14 4 11 5 15BT 15 51 185 72 1 62 5 41 6 36 0 18 0 14 4 18BT 18 61 422 86 5 75 0 54 6 47 3 23 7 18 9 20BT 20 68 240 96 2 84 3 63 6 55 1 27 6 22 0 24BT 24 81 895 115 100 66 5 57 7 28 8 23 1 27BT 27 92 124 130 113 74 9 64 9 32 4 26 0 30BT 30 102 369 144 125 83 2 72 1 36 0 28 8 34BT 34 116 008 164 142 100 87 0 43 5 34 8 38BT 38 129 656 183 158 118 102 50 5 40 4 42BT 42 143 304 2...

Страница 3: ... Rise F LPM Temp Rise C Table 2 Water Temperature Rise vs Flow Rate in GPM LPM Model KW 10 F 5 6 C 20 F 11 C 30 F 17 C 40 F 22 C 6BT 6 4 2 16 2 1 8 1 4 5 1 0 4 9BT 9 6 2 23 3 1 12 2 1 8 1 6 6 12BT 12 8 3 31 4 2 16 2 8 10 2 1 8 15BT 15 10 4 39 5 2 20 3 5 13 2 6 10 18BT 18 12 5 47 6 2 24 4 2 15 3 1 12 20BT 20 13 9 52 6 9 27 4 6 17 3 5 13 24BT 24 16 6 63 8 3 32 5 5 21 4 2 16 27BT 27 18 7 70 9 4 36 6 ...

Страница 4: ...have a number of advantages over conventional on off single stage boilers Instead of switching on off all heating elements using sequencers each stage of a multi stage boiler is controlled directly by the controller to minimize both temperature fluctuations and reduce the number of on off operations of the contactors heating elements The on off times of each of the stages are separated by a pre de...

Страница 5: ...two previously installed 5 16 lag screws The key hole openings are located on 16 centers i e standard stud spacing on the top side of the hangers The lag screws must be suitably anchored to safely support the weight of the boiler including water content piping and wiring 2 5 PIPING The recommended piping arrangement is shown in Figure 2 Attach pump expansion tank drain valve pressure relief valve ...

Страница 6: ...Tighten terminal screw clamps If a pump horsepower larger than 1 6 HP is used change the pump fuse on the controller based on the pump rating Do not use a pump requiring greater than 5A or 600 VA Thermostat Connect thermostat or zone valve end switch to terminals T1 and T2 DO NOT apply any power to these terminals Strip wire ends before inserting into terminal block Tighten terminal screw clamps W...

Страница 7: ... to the designed heating water temperature by adjusting the dial of potentiometer located on the bottom left of the controller Figure 3 Use a small screwdriver to adjust the arrow on the temperature adjustment dial to the water temperature required This boiler is also equipped with a non adjustable high limit temperature device set at 230 F as safety limit control The high limit temperature device...

Страница 8: ...m only when absolutely necessary to make repairs or prevent freeze up during extended cold weather shutdown d The pressure temperature gauge on the system should be checked frequently During normal operating conditions pressure should be relatively stable throughout the heating season If pressure under normal operating conditions consistently rises and falls over a period of time this can indicate...

Страница 9: ... high limit sensor is faulty disconnected or misconnected 2 Sensor red Operating sensor error LED is lit when operating sensor is faulty disconnected or misconnected 3 Power green Power on off 4 Pump yellow Pump relay on off 5 Stage 1 yellow Boiler first stage on off low heat 6 Stage 2 yellow Boiler second stage on off medium heat 7 Stage 3 yellow Boiler third stage on off high heat Signal Control...

Страница 10: ...llowed by the pump All stage outputs will shut off within 15 seconds upon a sensor short circuit The shut down sequence will switch off one activated element at a time and then the pump All stage outputs will shut off immediately followed by the pump after a delay if the high limit temperature is reached or there is a sensor open circuit The controller has a built in automatic reset function upon ...

Страница 11: ...nected Red wire of sensor must be connected to HL Operating sensor fault allows water temperature to reach the high limit Perform Sensor Check described in 7 2 and replace sensor if necessary High limit sensor fault Perform Sensor Check described in 7 2 and replace sensor if necessary High Limit LED red on controller is lit Internal control fault Perform Sensor Check described in 7 2 and replace c...

Страница 12: ... from main contactor s and check for continuity If no continuity replace element If continuity the contactor is defective To confirm contactor defect check for continuity across main contactor when closed Pump runs constantly when there is no call for heat Internal control fault Replace controller Pump ceased or burnt out Repair or replace Pump wiring fault Check and repair wiring Pump fuse blown ...

Страница 13: ...voltage 5 Test operator sensor by using a DC voltmeter to measure voltage across OL CL and record voltage 6 A sensor at room temperature 68 F should measure approximately 2 93 Vdc If the sensor is not at room temperature use the following formula to calculate the expected voltage reading Sensor Temperature in F 459 4 DC voltage 180 The voltage drop across HL CL and OL CL should be approximately eq...

Страница 14: ...ny Allied Engineering Company distributor call us if you need help locating a distributor near your area If you require any technical assistance or have any comments about our product please write or phone us at Service Department Allied Engineering Company 94 Riverside Drive North Vancouver B C CANADA V7H 2M6 Tel 604 929 1214 Fax 604 929 5184 Email sales alliedboilers com Figure 4 Replacement Par...

Страница 15: ...BT Series Electric Boilers Installation Operating and Maintenance Instructions 15 Notes Section 9 ...

Страница 16: ...iler Location 4 2 4 Wall mounting 5 2 5 Piping 5 3 0 Wiring 3 1 Electrical Wiring 6 4 0 Startup Instructions 4 1 Warning 7 4 2 Startup 7 5 0 Maintenance Instructions 5 1 Service Hints 8 6 0 Controller Information 6 1 BiTronic Controller Information 8 6 2 Controller Operation 10 6 3 Temperature Setting 10 6 4 Anti Cycle Cube Setting 10 6 5 Controller Mounting 10 6 6 Protection from Liquids 10 7 0 T...

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