Mod Con 300 Specifications

120 Braley Rd. P.O. Box 429 East Freetown, MA 02717-0429 www.htprod

10 LP- 276 REV. 9.4.14 Supply Water Temperature Sensor – Thi

11 LP- 276 REV. 9.4.14 The service life of the boiler’s ex

12 LP- 276 REV. 9.4.14 Figure 2 – Dimensions and Specificat

13 LP- 276 REV. 9.4.14 C. CLEARANCES FOR SERVICE ACCESS See

14 LP- 276 REV. 9.4.14 PRODUCTS TO AVOID AREAS LIKELY TO HAV

15 LP- 276 REV. 9.4.14 H. UNCRATING AND MOVING BOILER Uncr

16 LP- 276 REV. 9.4.14 B. RELIEF VALVE Connect discharge p

17 LP- 276 REV. 9.4.14 The boiler is designed to be connecte

18 LP- 276 REV. 9.4.14 5. Feed green ground wire into

19 LP- 276 REV. 9.4.14 F. SCALDING When raising tank temp

2 LP- 276 REV. 9.4.14 IF THE INFORMATION IN THIS MANUAL IS

20 LP- 276 REV. 9.4.14 Table 8 – Mod Con Heat Exchanger Pr

21 LP- 276 REV. 9.4.14 pH of Water pH is a measure of rela

22 LP- 276 REV. 9.4.14 I. PIPING DIAGRAMS Figure 6

23 LP- 276 REV. 9.4.14 Figure 7 NOTES: 1. This drawing is m

24 LP- 276 REV. 9.4.14 Figure 8 NOTES: 1. This drawing is m

25 LP- 276 REV. 9.4.14 Figure 9 NOTES: 1. This drawing is m

26 LP- 276 REV. 9.4.14 Figure 10 NOTES: 1. This drawing is

27 LP- 276 REV. 9.4.14 Figure 11 NOTES: 1. This drawing is

28 LP- 276 REV. 9.4.14 Figure 12 NOTES: 1. This drawing is

29 LP- 276 REV. 9.4.14 1. Installation should be made in acc

3 LP- 276 REV. 9.4.14 The following defined terms are used

30 LP- 276 REV. 9.4.14 • The air inlet and exhaust comp

31 LP- 276 REV. 9.4.14 Figure 13 D. EXHAUST VENT AND INTAKE

32 LP- 276 REV. 9.4.14 NOTE: In Canada, follow CAN/CGA B14

33 LP- 276 REV. 9.4.14 Figure 14 – Condensate Piping NOTE:

34 LP- 276 REV. 9.4.14 2. The total combined equivalent len

35 LP- 276 REV. 9.4.14 6. To prevent water leakage, install

36 LP- 276 REV. 9.4.14 I. SIDEWALL VENTING DIAGRAMS Figure

37 LP- 276 REV. 9.4.14 Figure 17 – Sidewall Venting with Te

38 LP- 276 REV. 9.4.14 J. VERTICAL VENTING DIAGRAMS Figure

39 LP- 276 REV. 9.4.14 Figure 19 – Roof and Sidewall Ventin

4 LP- 276 REV. 9.4.14 The latest version of the National Ele

40 LP- 276 REV. 9.4.14 PART 6 – GAS PIPING FAILURE TO FOLL

41 LP- 276 REV. 9.4.14 Never use an open flame (match or l

42 LP- 276 REV. 9.4.14 The gas piping must be sized for the

43 LP- 276 REV. 9.4.14 Figure 22 – Mod Con 850 Gas Valve D

44 LP- 276 REV. 9.4.14 PART 7 – FIELD WIRING ELECTRICAL SH

45 LP- 276 REV. 9.4.14 use of a pipe sensor will be somewhat

46 LP- 276 REV. 9.4.14 F. LOW VOLTAGE CONNECTIONS FOR STANDA

47 LP- 276 REV. 9.4.14 Figure 25 – LP-205-JJ Figure 26 – C

48 LP- 276 REV. 9.4.14 Figure 27 – Mod Con VWH Cascade Mast

49 LP- 276 REV. 9.4.14 Figure 28 – Mod Con Internal Connect

5 LP- 276 REV. 9.4.14 C. SYSTEM WATER PIPING METHODS ...

50 LP- 276 REV. 9.4.14 PART 8 – START-UP PREPARATION A. CHEC

51 LP- 276 REV. 9.4.14 Sodium: 20 mGL B. CHECK FOR GAS LEAKS

52 LP- 276 REV. 9.4.14 When a demand for hot water is receiv

53 LP- 276 REV. 9.4.14 d. Verify that parameter 15 is set to

54 LP- 276 REV. 9.4.14 pressing on top of the plastic cover

55 LP- 276 REV. 9.4.14 |d4| — Not used. |d5| — Not used.

56 LP- 276 REV. 9.4.14 MOD CON FAN SPEEDS MODEL IGNITION MIN

57 LP- 276 REV. 9.4.14 20 2 Flow switch. Do not change. 0 =

58 LP- 276 REV. 9.4.14 C. BOILER FAULT 1. When a fault condi

59 LP- 276 REV. 9.4.14 E03 System sensor failure (Cascade Ma

6 LP- 276 REV. 9.4.14 B. CHECK FOR GAS LEAKS ...

60 LP- 276 REV. 9.4.14 F20 Condensate cup is full 1. Check

61 LP- 276 REV. 9.4.14 The combustion chamber insulation i

62 LP- 276 REV. 9.4.14 f. Replace the (4) screws on the alum

63 LP- 276 REV. 9.4.14 Figure 31

64 LP- 276 REV. 9.4.14 Figure 32

65 LP- 276 REV. 9.4.14 Figure 33 – NOTE: Ceramic Refractory

66 LP- 276 REV. 9.4.14 Figure 34

67 LP- 276 REV. 9.4.14 Figure 35

68 LP- 276 REV. 9.4.14 BOILER START-UP REPORT LIGHT OFF ACTI

69 LP- 276 REV. 9.4.14 INSPECTION ACTIVITIES DATE LAST COMPL

7 LP- 276 REV. 9.4.14 DO NOT USE THIS APPLIANCE IF ANY PART

70 LP- 276 REV. 9.4.14

71 LP- 276 REV. 9.4.14

72 LP- 276 REV. 9.4.14 MAINTENANCE NOTES

73 LP- 276 REV. 9.4.14 HTP CUSTOMER INSTALLATION RECORD F

8 LP- 276 REV. 9.4.14 VWH Recovery Ratings with Storage Tan

9 LP- 276 REV. 9.4.14 Mixing factor → Mf = 140 – 40 = 1.43