Owner's Manual

SECTION 3.0 WATER PIPING (continued)

Fig. 3 — 11 Net Expansion Factors for Water ...............................................46

— 12 Acceptance Factors for Diaphragm Type Tanks ........................47

— 13 Module Data-Water Side ...........................................................47

— 14 Water Piping for Service Water Heater ......................................48

— 15 Service Hot Water Demand, Fixture Units ................................. 49

— 16 Service Hot Water Flow Rate ....................................................49

— 17 Sizing Factors for Combination Heating/Service Water .............50

SECTION 4.0 GAS PIPING .................................................................................. 51

Fig. 4 — 1, 2 Recommended Gas Supply Piping ................................... 54 & 55

— 3 Gas Pipe Sizing Table ...............................................................56

— 4 Equivalent Length of Fitting & Valves — Gas Pipe .................... 56

— 5 Maximum Capacity of Pipe ........................................................57

—6 CorrectionFactorsforSpecicGravity ......................................57

— 7 Support of Piping .......................................................................58

— 8 Moisture and Dirt Trap ...............................................................58

SECTION 5.0 CONTROLS .................................................................................. 59

Fig. 5 — 1 Tekmar 261, Two-Stage, EI, for Parallel Piping .........................61

— 2 Tekmar 261, Two-Stage, EI, for Primary Secondary Piping ......62

— 3 Tekmar 263, Two-Stage, EI, for Parallel Piping .........................63

— 4 Tekmar 263, Two-Stage, EI, for Primary Secondary Piping ......64

— 5 Tekmar 274, Two-Stage, EI, for Parallel Piping .........................65

— 6 Tekmar 274, Two-Stage, EI, for Primary Secondary Piping ......66

— 7 Tekmar 268, Two-Stage, EI, for Parallel Piping .........................67

— 8 Tekmar 268, Two-Stage, EI, for Primary Secondary Piping ......68

SECTION 6.0 START-UP AND SERVICE ............................................................ 69

Series 8H/8HE Boilers are NOT suitable for direct installation on combustible ooring.

Refer to the 8H/8HE Installation, Operating and Service Instructions (Part Number 81416021) for Installation

Instructions for Floor Shields that are available and required for combustible oor installations.

LIST OF FIGURES (continued)

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