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Part number 550-100-252/0520
– 2 –
Contents
Follow all instructions for installation,
start-up and servicing in the
SVF
TM
boiler
manual.
Use this Advanced Manual for multiple
boiler installation guidelines and control
settings and for single boiler advanced
control settings.
HAZARD DEFINITIONS
The following defined terms are used throughout this manual
to bring attention to the presence of hazards of various risk
levels or to important information concerning the life of the
product.
Indicates presence of hazards that will cause
severe personal injury, death or substantial
property damage.
Indicates presence of hazards that can cause
severe personal injury, death or substantial
property damage.
Indicates presence of hazards that will or can
cause minor personal injury or property dam-
age.
Indicates special instructions on installation,
operation or maintenance that are important
but not related to personal injury or property
damage.
IMPORTANT
THE OUTDOOR SENSOR SUPPLIED WITH THE
BOILER IS RECOMMENDED.
If the outdoor sensor is not used, the follow-
ing changes must be made to control settings
during control setup:
TARGET ADJUST (in priority menus) must
be set either to NONE (constant supply tem-
perature) or 0–10VDC (remote target).
WWSD must be set to OFF.
Unity
TM
Control — Advanced mode . . . . . . . 3
Multiple boiler installations . . . . . . . . . . . . . 6
Multiple boiler water piping . . . . . . . . . . . . . 7
Fast-Track Setup — Requirements by Boiler . . . 11
Fast-Track Setup — Steps. . . . . . . . . . . . . 12
Fast-Track Setup — The WIZARD . . . . . . . . . 13
Fast-Track Setup — Typical Application A . . . . 16
Fast-Track Setup — Typical Application B . . . . 18
Fast-Track Setup — Typical Application C . . . . 20
Fast-Track Setup — Typical Application D . . . . 22
Fast-Track Setup — Typical Application E . . . . 24
Fast-Track Setup — Typical Application F . . . . 26
Additional heat demand . . . . . . . . . . . . . . 28
Field wiring . . . . . . . . . . . . . . . . . . . . 25
Field wiring Single Phase Schematic Diagram . . 30
Field wiring Single Phase Ladder Diagram . . . . 32
Field wiring Three Phase Schematic Diagram . . 34
Field wiring Three Phase Ladder Diagram . . . . 36
Zoning with the
Unity
TM
Control . . . . . . . . 42
Control operation and setup . . . . . . . . . . . . 48
Unity
TM
Control — INITIAL SCREENS . . . . . . 46
Available control settings – Advance Mode . . . . 52
System Type presets . . . . . . . . . . . . . . . . 54
CONTRACTOR menus. . . . . . . . . . . . . . . . 55
BOILER SETTINGS menu . . . . . . . . . . . . . . 56
NETWORK SETTINGS menu. . . . . . . . . . . . . 57
ROTATION AND SEQUENCE . . . . . . . . . . . . . 58
Network Boiler PRIORITY menus . . . . . . . . . 61
Single Boiler PRIORITY menus . . . . . . . . . . . 63
ASSIGN INPUTS menu . . . . . . . . . . . . . . . 65
AUX PUMP/OUTPUT options . . . . . . . . . . . . 66
MAINTENANCE, DATE AND TIME menus . . . . . . 67
SVF
™
Series 1
COMMERCIAL CONDENSING GAS-FIRED WAT ER BOILER
— Advanced Manual
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