Dettson HMR Installation Instructions And Homeowner's Manual page 16

Typical connection for system with finned tube radiators and without sanitary water coil
Control used:
- "Triple action" temperature control -Honeywell # L6081A or
White Rodgers # 11C61 (Aquastat Triple, Hi-Lo/Circ)
- Pump relay Honeywell # RA89A or White Rodgers # 809A
DNS-0145 Rev. G
Burner Stop
Start
Circulator Stop
Start
Set
°F °C
200 93
Maximum High-Limit setting = 210°F
16
Operation and typical settings
Operation: (the boiler is maintained warm)
"Lo" contact opened
"Lo" contact close
Thermostat opened -or- All zone valves closed
Thermostat closed -or- One zone valves opened
"Hi"
Diff.
°F °C
10 5.6
FIGURE 5.2
Settings:
Set
°F
180
"Lo / Circ"
Diff.
°C °F
82 10
°C
5.6