Instruction manual
5
P/N HN-IOM-1 82-0331 Copyright 2009 Mestek, Inc.
Finned copper tube gas boilers & water heaters – Control manual
4-20mA direct operation — Up to 5 boilers can be controlled by an external con-•
trol that provides a 4-20ma input signal. e external controls must also activate
each boiler by closing a contact across the boiler’s 4-20ma Remote Enable con-
tacts.
Member boilers can override external boiler control if they receive a contact clo-•
sure on the Heat Demand or any terminal higher priority than the 4-20mA (con-
trols can be set up to make 4-20mA the highest priority if desired).
5 Configuring for DHW applications ...... page 16
e HeatNet control can control provides multiple options for DHW heating, •
either for dedicated DHW or combined space heating/DHW. is section dis-
cusses four alternatives, referred to as Method 1 through Method 4.
6 Control menus and adjustments ........ page 29
Operating parameters and control behaviors are set using the HeatNetv control’s •
display/keypad interface.
Refer to this section for the menu structure and explanations of the setup options.•
• Table 7 — SETUP menus .................................................. page 30
• Table 8 — ADVANCED SETUP menus .................................. page 33
• Table 9 — Setup menus — parameter explanations ...................... page 35
7 Wiring ................................ page 29
Wire the boilers as described in this section.•
8 Boiler operation and status display ..... page 29
is section describes control start-up and operation.•
9 Troubleshooting ....................... page 51
• Table 11 — Status screen fault displays ..............................................
page 49
• Table 12 — Troubleshooting suggestions ...........................................
page 52
10 Setup worksheet ...................... page 55
Use this section to enter setup information.•
Contents
Futera
HeatNet
Electrical connection
panel & subpanel