Burnham 805H, Installation, Operating And Service Instructions

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D.
Install Drain Valve in rear of Left End Section,
Tapping “G”. See Figure 17. Components are located
in Water Trim Carton.
E.
Install Temperature-Pressure Gauge.
Components
are located in Water Trim Carton.
1. Standard Temperature - Pressure Gauge Piping. See
Figure 18.
Figure 17: Drain Piping Installation
Figure 20: Recommended Piping for Combination
Heating & Cooling (Refrigeration) System
a. Install 2” NPT x 10” lg. nipple with gauge
tapping into Supply Tapping “A”. See Figure 3.
Gauge tapping should face forward.
b. Insert Temperature-Pressure Gauge. Tighten
by applying pressure to square shank on back
of gauge. DO NOT APPLY PRESSURE ON
GAUGE CASE since this may ruin gauge
calibration.
2. Alternate Temperature-Pressure Gauge Piping. See
Figure 19.
a. Install 2 NPT x 10” Nipple into Supply Tapping
“A”. See Figure 3.
Figure 18: Temperature-Pressure Gauge
Installation
Figure 19: Alternate Temperature-Pressure Gauge
Installation
b. Install 2 NPT x ¾ NPT x 2 NPT Tee (provided)
or 2 NPT x 2 NPT x ¾ NPT Tee (installer
furnished). ¾ NPT leg should face forward.
c. Install ¾ NPT x ¼ NPT Bushing.
d. Insert Temperature-Pressure Gauge. Tighten
by applying pressure to square shank on back
of gauge. DO NOT APPLY PRESSURE ON
GAUGE CASE since this may ruin gauge
calibration.
F.
Connect system supply and return piping to boiler.
See Figure 21. Also, consult I=B=R Installation
and Piping Guide No. 250. Maintain minimum ½
inch clearance from hot water piping to combustible
materials.
1. If boiler is used in connection with refrigeration
systems, boiler must be installed with chilled
medium piped in parallel with heating boiler using
appropriate valves to prevent chilled medium from